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Патент USA US2121051

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2,121,051
T. M. RAGAN ET AL
June 21, 1938. y
CEMENT RETAINER
3 Sheets-Sheet 1
Filed July 14, 1937
.1.
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THoMAs M RAGA/v
CLA EEA/cs E. EUR 'r
ATTORNEY .
June 21, 1938.
2,121,051
-r. M. RAGAN ET AL
V
CEMENT RETAINER
Filed July' 14, 1937
'3 Sheets-Sheet 2
E?. Z
47
y THoMAs M RAGA/v
CLARE/vcr E „231/497-
BY
@ca/UQ
'
ÀTToRNEY .
`
June 21,1938.
T. M. RAGAN ET AL
CEMENT RETAINER
-
_
F ‘ n.8.
4Filed .July 14, 1937
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2,121,051
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.
s sheets-sheet a
F ' M9.
1
`M10.
INVENTOR.
Wvo/»1A s M EA 6A N
192A .e5/vc: E. ¿Bue r
ÃTÃTORNEY .Y
Patented June 2l, .1938-
» "2.121.051
.. UNirED'ps'rAT'Es PATENT » OFFICE»
" artrosi .
CEMENT RETAINER.
.
`
` Thomas M.'Bagan and Clarence E. Burt, Los
- -Angeles, Calif., assignors to Baker »Oli Tools.
Inc., Huntington Park, Calif.. _a corporation _of
' California
application July 14, isst, serial No. isaszz _. ~
19 claims'. l(o1. 16s-713)
~
r
_
j
' This application is al continuation in .part of above bottom. This enables iti to bevemplcpwedv
-our pending application entitled "Cement re“-I `\ to shut of! high pressure gas below the produc
tainer’.' iiledMarch 26, v1935, and bearing, Serial
n
No.
5
13,063.
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.
_
.
' The 'invention relates to appliances commonly
known as‘cement retainers which are utilized in '
packing ofi. cementingr and repressuring opera
tions in deep oil wells.
'
'
‘
It is the principal object of the present in.
10 vention to provide an improved tool of the char
actenreferred to which may be safely and prop
erly run-in and set at any desired point in thel
casing oi' a deep well and resistdislodgmentby
pressures either -above or- below it; 'theÍappara
1l tus'being utilized in cementing operations --to ce
ment oi! a water formation at a predetermined
level or form a cement seal and reinforcement
lbetween the well casing and the bore throughout
ing sands.
. `
'I'he invention is exempliiled in the following»
description and 4illustrated by way of example in
the accompanying drawings in which: y
' .
' Fig. l is a longitudinal sectional view vthrough
a portion of a well casingand disclosing one form
of our improved .device positioned therein with the parts in the positions they assume when the 10
device is being run-in in the casing.
`. Fig. 2 is a view similar to Fig. 1 but disclosing
one set of slips in tripped position.
'
Fig. 3 is- a perspective view of the slip sleeve.
Fig. 4 is a perspective view of one o_f the slips. 15
Fig. 5 is a view similar- to Fig'. 2 with the ex- .
ceptlon that all 'of the- slips are shown in tripped
position.
‘
Fig.` 6 is a, `vlewl>similar to Fig. 5 showing the
parts of the packer in' the position they assume
20 capable of eilicient use in packing oit or ¿bridg
ing the well casing' at any desired point there- » when the packeris fully set in the casing. '
Fig. 7 is a view the same as Fig.-6'e::cept the
along'for purposes such as packing-oil` high .pres
bridging ball valve is shown in position so that
sure gas‘sa'nds below the oil strata. i
' the entire length oi' the casing. 'I'he tool is also
'
In general, the device consists of a valved hol
25 `low packer which may be run in thehole at the
lower end of- a'string' `of tubing. This packer is
fitted with operatlve‘slips for firmly anchoring
the device will act‘asa bridge plug.
'
Fig. 8 is a longitudinal sectional view through
a portion of a well ëaslng and disclosing` a sec
ond embodiment of f our invention positioned
it to the surrounding casing so` that it will resist - therein with the parts inthe position they assume . '
- dislodgement either from pressures above or pres
a0 sures below. The packeris iltted with an expan
when the device i'sbeing run-in inthe casing.-
_
Fig. 9 is a view similar to Fig. 8 but disclosing
Í sible packing or sealing element for sealing off' one .set of ‘slips in tripped position.v
~'
the space between the exterior ofl the device and . .'_ Fig. 10 is a view similar to Fig. 9 but disclosing
thecasing wall.v The slips br anchoring means.
. and the packing elementare operated by i'luid
_' a5 pressure and by manipulation of vlthe Írunning-in
tubing at the derrick iloor.
i
In cementing’ operations, the ’tubing method
thev device as it appears when completely set in
position.
‘
‘
1
'
'
' , Referring tothexaccompanying drawings, (par-
.v ticularly to Figs. l to 7 inclusive). I0 indicates
a packer 'or what' is commonly known. as a ce“
may be practiced, that is, the cement slurry is' ment retainer. 'I'his device isgener'ally cylin
pumped downwardly through .the running-in tub- ' drical lin cross. section and of an overall external
40 In! and _the-packer into the space below the pack
diameteri just slightly less, when its parts are in
unset position, than the internal diameter of the
seal. ’The cement slurry .is prevented from re-' , well 'casing into which it' is to be run and set. '
turning into the packer and casing above 'the
. The packer or cement-retainer I0 includes'an
same by a back pressure valve carried bythe. elongated hollow cylindrical body II, the lower
>45' packer. ÜAs this packer orcement retainer can end of which is formed with a concentric _main
Ibe set at any- desiredv point -in .the casing after circulating port. I2 surrounded by a valve seat
the latter is in place, the'A tooll is capable of use . I4. Cooperating with .this valve seat to control
in shutting ou water at any'.point along 4the well. the ñow of fluid upwardly into the body II from
The device may also be used as a bridge Plug below the same is a .downwardly opening> back
, 50 to bridge oir the interior of the casing at any pressure valve I5 of` the poppet type. 'I‘his valve
'
er and` back up around the casing to form a
desired point. This permits clementing` opera
is iltted with a valve stem I6 which extends ver
tions to be carried on above the devicel as is de
tically upward into the' body I I and is recipro
sirable in some instances. '.The device likewise
cably mounted in a guide I'I centrally of a spider
- maybe used purely as a packer to seal ci! the
I8 formed integrally with or' secured within the
body. I I. An expansionspring I8 is arranged be
„ 55 interior oi the casing at any predetermined point
‘. .
`
i
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`2,1'21,o51`
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r
tween the 'guide'v I1 and an enlarged head Ila ` body‘ll is provided with-a slip sleeve 33'.> This
formed on the upper extremity of the valve stem slip sleeve `is bored so -thatit i's lcapable of re
I6. The spring I3 normally tends to maintain _ciprocation on the exterior surface of the body- I I.
the valve I5 seated on the seat I4, thereby closing The exterior of the slip` sleeve 33 is formed with
Vthe main circulating port I2. It is obvious, a plurality of vertically arranged slip sockets 3.3
however. that the valve I5 may be opened by ñuid which are spaced equal distances apart about the
pressure from within the body when the same
periphery ofv the slip sleeve 38. There are two ,' '
exceeds the pressure in the casing below the _'
sets of these sockets; one set to receive what we ' '
packer I0.
prefer to .term “down-pressure slips”, which are
It will be noticed that the body I I is hollow and . provided to resist dislodgement of the plug from 10
is formed. with a lower bore 20 and an upper pressures above it, theother set of slips we prefer
to term "‘up-pressure slips” which are provided
bore 2|. These two are connected by an inter
mediate bore 22 which is reduced in diameter to resist dlslodgement of the device from pres
41o
with respect to the upper and lower bores 2l and sures below the packer. l
'
20. .A bridging valve seat 23 is formed at the
The inner’surface of each socket 39 is yformed
junction between the upper bore' 2| _and the in I with two parallel surfaces arranged one above' the
termediate bore 22, the` purpose of ‘ this seat will other andl which are inclined with respect to the
be hereinafter described.
».
vertical 'axis of the slip sleeve. The inner sur
Reciprocably mounted in the intermediate bore faces of adjacent sockets are oppositely inclined
20 22 is a sleeve valve 24 ~which has a passageway so that the “up-pressure” and “down-pressure”
25 formed co-axially therethrough.' At its upper slips will be arranged alternately about the slip
end the sleeve valve 24 is formed with a trip valve
sleeve 38.
Each socket 39 'is fitted with a slip 40. '
In the present instance there are three up-pres'
in Fig. 2. Depending from the lower end of the „sure slips and three down-pressure slips, there
25 sleeve valve 24 are spaced legs 23 which _connect ybeing .six sockets formed in the slip sleeve 38.
'the sleeve valve .to a circular trunnion 23 which It is to be understood, however, that we may
' seat 28 to receive a ball trip valve 21 as shown '
l is connected to the head Ita by means of a
shear ‘pin` 30.
v
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provide a greater or lesser number of slips if we
so
desire.
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vDue to the connection between the sleeve valve
The inner surface ofeach slip 40 is formed
30 24. and the valve >stem I3, the valve spring I3 with parallel inclined surfaces which Tcoincidev
constantly tends to maintain the sleeve valve 24 ' with and are complementa] to the inner vsurface
»in its uppermost position. When the packer is v.of its socket so that relative` vertical movement
assembled for running-in, it is desirable to hold between the slips and the slip sleeve 38 will re
'
the ~valve I5y open. so that fluid may pass freely sult in radial movement of the slips.
35 upwardly through the-body II.
To maintain the
- . It win be noticed that at the junctions between'l
valve in this'open position'weprovide a stop pin> ` the inclined surfaces of the slip socket, there is
3i which is secured in the body II andA against - a lateral shoulder which coincides with a similar
which the upper end of the sleeve valve 24 abuts.
Such engagement prevents the valve I5 from en->
40 tirely `closingV so that when the plug is run-inin
lateral shoulder between the inclined surfaces of
the slip fitting the socket. Each socket isformed
t the casing, it may be moved up _and down therein
formed on the slip. l An expansion spring 4I is
arranged in each socket and it abuis against the '
without causing a swabbing'action. -
>In the runningâin position the sleeve valve 24
covers a port 32-Yf'ormed through the wall of the
45 body'II and which extends from the intermedi--`
`ate bore 22 to a point between the exterior of `
the body Il ,anda surrounding packer'sleeve '33.
This packer sleeve 33 is formed of rubberLor any
_' other suitable-pliable material’a'nd is anchored at
witha keyway 33a which is engaged by a key 40a
end of the'keyway v39a. attone end and against
the lateral shoulderon the slip 40 at the other
end sov that when‘lthe'slip' is detached from the.
slip sleeve 33, the spring 4I will move the slip
relative to the slip sleeve 33 and consequently
cause 'the slip to move radially outward.
`
In the case ofthe down-pressure slips which
-we have indicated at-A, the springs 4I will move
its lower end to a flxed ring' 34.which >is bolted or
otherwise secured to an annular .flange 35 `cir
the slips upwardly relative to the slip sleeve 33
eumscribing the lowerv end ofthe body I-I. The - andl in the case of the up.-pressure slips B, the .
l
` \ upper end of the packer sleeve 33 is anchored to` _springs 4I will move the slips downwardly _rela
,
'55
a sliding ring 38 slidably .fitting the exterior of
the body Il.. In_ running-in condition, the slid'
- ing ring 36 is connected to the body I by shear
pin
31.
_ y
,
-.
In operation it is intended that when the sleeve
tiveto the slip sleeve' 33. This'movement of the
slips causes them to move radially outward‘and
into engagement with the casing.
'
,
,
Referring to Fig. 1 where the parts are shown
in the position which ‘they assume when- ‘the de
valve 24 uncovers'the port 32, as will‘be described,
vice is run-in to the casing, >it will be noticed that
that fluid'unde'r presure'be directed through the .‘ the slips are arranged in their innermost position
port 32”'to between the exterior of the body II
and the interior of the packer sleeve 33, causing
and that the down-pressure‘slips are secured to
`>tween' the packer sleeve and the body, that' the
packer sleeve will ñrst expand 'into 'contact with
pressure slips Bfare 'each secured by two- shear
pins 4_3, while each'down-pressure slip is secured
the weil casing and then, ldue to compression, _it
to the slip ,sleeve by a s'ingleshear-pin 42. , It will ¿I
the“ slip sleeve 38 by ,a shear pin 42 while the up- ,expansion of the latter.' (We have found in lac- _ pressure slips B are -secured >to the slipA sleeve 38
malpractice that by`creating ~this pressure be# by shear pins 43. It will be noticed that the up-`
¿will elongate. This elongating» movement is
.
also be' noticed from. Fig. ._1 that when the parts
' lsuillcient to shear .they pin 31 vand cause thel slid- _ are in run-in condition of an assembly, that the
y
'x 70
We >use this springs-4I are underfull compression.
70.. lng ring >36 to move upwardly.
When »the slip sleeve 33 is' assembled eon* the
~ ~ movement of this sliding ring :36 to operate ìa por- _
'tionofthesetting mechanism of the tool, as will ` body Il prior torunning the tool into the casing,
it is secured to the body II by a shear pin '44.I “ It
be described." " \
'
Referring particularly _to Figs. 1 to 4 inclusive,
will also 'be noticed that within' its upper end, the
"u it'will be seen that` above thepackersleeve 33 the .sliplsleeveji is formed with an annular. groove 75
3
of tubing 43..moving the body II upwardly‘rela--
4l which reóeives a spring laten ring u. 'rms
tive to the slip sleeve 331 and the slips. This _
tions 41 formed .about the exterior surfa'ce of the movement is continued until the upper -end of
body lI_I to latch the sleeve 38 in positionv on the ’ the sliding ring 33 abuts against the lower end
4body I I when the tool has been run in the casing j vof the slipsleeve 33 and is further continuedso 5
latch ringis adapted to engage annular serra
-and set.
'
‘
"as to compress the packer sleeve 33 intothe‘con
_
_
For the purpose of running the tool into the . dition shown in Fig. 6. .forming a complete water
casing. the upper end of the upper bore 2l _ is_ tight. seal between the "body II vand the casing.
formed with a- left-hand female thread to re-. This upward .pull will likewise .to some extent
.10 ceive the left-hand male thread 4l formed on the
lower end of running-in tubing 43. The _purpose
‘of the left-hand thread is to enable the tubing
force the up-pressure slips’into firm gripping 10
contact withthe wall of the casing.
`
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_
-After the packer sleeve 33 has been fully com- '
‘ 49 to be unscrewed from Athe body I,I after the . pressed, the latch ring 43 of the slip sleeve 3l
'15
tool has been tripped and set in the casing
In operation of the device, it is constructed and
assembled as shown in Fig. l. In thisfcondition
the valve I5 will be unseated. the two sets of slips
A and B will be in their innermost position, and
the packer sleeve 33 will be fully contracted.
20 The tool is' then threaded on the" lowei` end of
the running-in tubing v49 and lowered into the
casing. It is _obvious that due to the'fact that
' the valve I5 is open, 'the device 'can be 'moved _up-and down in the casing without causing a swab
bing action.4
_
will engage one of the latch grooves in thehody
'II and maintain the partsin setcondition, as il- 15
lustrated in. Fig. 6.v Thereafter pump pressure is '
againrbu-ilt up in the interior of‘the body II
through the running-in tubing >y49. - This fluid
pressure is built upsufilciently to shear the pin '
30 which connects the sleeve valve to the head zo
of the valve stem Ita.. In so shearing this pin,
-the fsleeve valve 24 drops to an~ ineffective posi
tion,` as illustratedA in Fig. 6, within the lower ~
bore 20 of the _body II ‘andthe- valve _I6 is then
freetoseat.
VWhen the'device has been positioned at the de
sired point, the trip ball' 4valve 21 is dropped
through the tubing 43 ~and it will ilnd>its seat on
the seat 26 on the sleeve valve 24. Fluid pressure
is then created in the tubing 43 and lin the inte
..
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y 'I'he ball- 21_ is then,l of course. ineil'ective" to _pre
vent fluid under pressure from being pumped1
downwardly through the body vI I through 'the port
I2 afteropening the valve I5. ' It will be noticed .
that a series of _radial ribs _are provided in the 30
rior of the body of body I_I above the sleeve valve ' lower bore 20 of the_bodyl II to maintain the
24. >This pump pressure is sufficient to move the sleeve valve 24 in an ineffective position.
e It is obvious fromthe previous description and ‘ «
trip ball valve 21 and the sleeve valve 24-down
wardly against the action of the spring I3 until from the drawings that anyup-pressure built up
the port 321s uncovered by the sleeve valve _24. . in the 4easing below the retainer or _packer will «.5 _
This iluid pressure, however",V is insuillcient‘to , tend to more' tightly press the 'up-pressure slips
shear the pin'30 which connects the sleeve valve into contact withthe casing due to the _inclined '
surfaces oi'l vthe -slip sockets. It is likewise ap-l
24 to the enlarged head Ita of the valve stem I6.
The yi‘luid pressure passing through the port 32- parent that any considerable pressures built up _
causes the packer sleeve 33,-to expand, as illus
in the casing above the '_packer'or retainer will “j '
trated in Fig. 2, and thereafter compresses the ytend to. more tightly rpress `the down-pressure
_ sleeve, whichcauses it to elongate and, in so do
- slips into contact with the-casing. Therefore, the
ing, it. shears the pin 31 which connects the slid
vi'ng‘collar 36 -to the body I_I and moves the slid
packer will resist ydislodgernent either from pres
sures above orv pressures below. It will be noticed
The lsliding'collar 38 is , 'thatthe down-'pressure slips are provided with ‘5
moved upwardly a suilicient distance and with downwardly extending wickers and that the up- '
ing collar 36Aupwardly.
suillcient force to engage the lower _ends of the
pressure slips- are provided with upwardly di
down slips A and shear the pins 42. . The min
rected Wichers for gripping purposes.
«
ute that these pins 42 are sheared, the springs 4I The device is then ready for cementing oper
ofthe down slips A move the slips' upwardly with
_respect to the slip sleeve 33. This movement of
ations and cement may then. be pumped down
wardly throughthe running-in tubing 43, -thence ~
the. slips causes-them >to move'radially outward
through the body I Lopening the valve It and _dis
charging into thecasing -below the packer Il.
In most instancesjthecasing vis perforated below
‘ into engagement with the casing.-
'
_
The pump pressure above. the valve'- 21 is then
relieved and a portion of the weight ofthe run-l
55 ning-in' tubing>43 is permitted to vbear on the
the packer IIIso that the cement may discharge 55 `
outwardly through these perforations and up
upper end of the body-II. 'I'his moves 'the body -wardly through the casing to-eifect a seal be
I_I and slip sleeve 38 downwardlyv relative t'o the tween _it and the wall of the hole. After the ce
menting operations have been completed, the
down slips A, consequently moving the slips A out
wardly into a firm gripping contact with' the back pressure of the cement will close lthe valve so
casing, when the slip A stops moving downward- _ Il to prevent the cement from passing upwardly
ly, _relative to> the- slip sleeve '33. During- this
into the body II. and intothe casing` above th
movement, an upper annular ilange 53 which cir
bodif-y
-cumscribes the upper end of the body’ II will l'
’
_ After
_
.
_
`
_.
the cementing .operation
has been com
_
engage the upper ends of theup-pressure slips -pleted, the running-lin tubing 43 may be discon'- als>
B. This engagement will tend to move the up ‘ nected from the body I_I due to the left-hand
pressure slips B downwardly relative to the slip screw connection between the two. The running- '
sleeve -33- shearing the pins 43. _ The moment in tubing may then be ypulled from the hole. _
that these pins -are sheared. the springs 4I act to ' We may prefer to use i'n ‘connection with this
packer a4 circulating-jar or joint of any 4preferred 70
70 move the‘up-pressure slips downwardly _relative
to the slip sleeve 38 which causes them-to move
If for‘any reason it is desired to make the de
radially outward into .engagement with the cas
type»v
ing.
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vice a bridgel plug so as to prevent the passage
As soon as the set oi' up_-pressure»slips_B ere ' of fluid either upwardly through the packer or
tripped, a strain is taken on the rimning-in string ‘ downwardly therethrough. abridging ball Il is 1g
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'2,121,051
provided. "I'his ball may be'dropped through the
I running-in tubing ,4.8 and it will seat on the bridg
ing valve seat 23. 'I‘his will prevent fluid from
being pumped downwardly through the body il
wardly.' We use this movement oi' this upper cone
36a to release an upper set of segmented slips la
and move them into contact with the well casing.
The set- of slips Iaare the “up-pressure” slips. .
and the back pressure valve I5 will prevent fluid
The co-acting surfaces of the slips la andthe
from passing upwardly through the body I l .
Referring to the second embodiment of our in
f vention and particularly to Figs. 8 to 10 inclusive
cone 36a are such that upward movement of
the latter relative to the slips will move the same
outwardly. It will be noticed that the ~slips are
connected to the cone by shear pins 31e and to
of the drawings, the device there disclosed in#
cludes an elongated hollow cylindrical body Ha,
the body Ila by shear pins 31d. When the cone
the lower end` of which is i’orn'iedv with a con
36a commences to move upwardlyalong the body
centric main circulating port I2a surrounded by
a valve seat lla. Cooperating ywith this valve
seat to control the ñow of i‘luid upwardly into the
due to elongation of the packer sleeve Ila the
15 body lia from below the same is a downwardly
opening back pressure valve lia ot theñapper
type’. This valve is hinged vas at lib within the
body lia. A spring Isa is arranged between the
valve I5a and the body andnormally tends to
Mounted in a similar manner on the lower
pins 31a, 31e and 31d are sheared so that the cone
will move the slips tó set position.
vus'
cone 31a is a set of "downfpressure" slips 2a.
These slips and cone haveco-acting cone faces
disposed so that upward movement at the body
Ila and, slips 2a relative to the cone “a will dis
20 seat the valve lia on the seat Ila, thereby closing » rupt the shear pin connections and set the
the main circulating port I2a. It is obvious, how
slips 2a.
>
'
l
ever, that the valve lia when seated, may be
Referring to Fig. 8 where the parts are shown
opened by fluid pressure from within the body in the position which they assume when 'the de
.when the same exceeds the pressure in the casing ‘vice is run-in to the casing. it will be noticed
below the valve.
I
that the slips are arranged in their innermost po
It will be noticed that the body Ila is' hollow sition so that ample clearance in the casing will _
'and is formed with a lower bore 20a and an upper
'I'hese two boresare connected by an
intermediate chamber 22a. A bridging valve seat
' bore 2Ia.
be provided.
,
y
Itwill be noticed that the upper cone 38a is
formed with an interiorv annular groove "a
. 23a. is formed in the upper bore 2Ia.' the purpose " which receives a spring latch 48a.
'I'his latch
of which seat is the same as described in connec
is adapted to engage annular serratlons _ 41a
tion with the form of the device shown in Figs. l.
to 'l inclusive.
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.
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Mounted in the bore 20a is a hollow sleeve 24a
which has a trip valve seat 26a formed interiorly
thereof ’to receive a ball tripvalve 21a as shown
in Fig. 9." Extending- upwardly from the upper
end of the sleeve 24a is a. lug 28d which engages
the valve lia to hold the same in open position
as shown in Fig. 8. The sleeve 24a is held in -po
sition by a shear pin 30a. When the packer is
assembled for running in, it is desirableto hold
the valve I5a open so that ñuid may pass freely
formed about the exterior surface of the body Ha
to latch the cone 36a in position on the body Ila
when the tool has been run inthe casing and set.
For the purposeof running the tool into the
casing, the upper end of the upper bore Ila is '
formed with a left-hand female thread to re- -
ceive the left-hand male thread 48a formed on
the lower _end _of running-in tubing 49a. The
purpose of the left-hand thread is to enable the
tubing 49a to be unscrewed from the body Ila
-after the tool has been tripped and set in the
upwardly through the body lia. _ It is to main
tain the valve in this open position that we pro
vide4 the sleeve 21a which is secured in the body
I_la by the'y shear pin 30a so that the lug 28a will
preventthe valve lia from closing so that when
the plug is run-in in the casing, it may be moved
up and down therein without causing a swabbing
casing.
-
upper cone than the lower one;
24a to Athe body Ha.
In operation of the device shown in Figs. 8 to
10 inclusive, it is constructed `and assembled as
shown in Fig'. 8. In this condition the valve Ila
will be unseated, the two'sets of slips la and 1a
will be in their innermost position, and the packer
sleevel 33a will be fully contracted. 'I'he tool is
then threaded on the lower end of the running
action.
I
A packer sleeve'33a is provided and is formed in tubing 49a and lowered into'the casing. It is
of rubber or any other .suitable pliable material «l obvious that due to the fact that the valve IIa is
and is connected at its lower end to a lower cone open, the device can be moved up and down in
“a which slidably ñts the body I la. The upper the casing without causing a swabbing action.
.When the device has beenv positioned at the
end of the packer sleeve 33a is anchored'to an
upper cone 38a slidably iltting the exterior of the desired point, a trip ball valve 21a Isdropped
body lia. In running-in condition, both cones through the tubing 49a and it will ñnd its seat on
Ila and 36a are connected to the body Ii by the seat 26a on the` sleeve 24a..` vFluid pressure
shear pins 31a. There are more shear _pins‘f 31a. is thenvcreated in the tubing 49a. and in the -in
'connecting the lower cone 34a to'the body than terior of the .body of body Ila above the sleeve
24a. This iluid pressure, however, is insumcient
‘ connecting the upper cone 36a to the body so
that a lesser, pressure is required to release the to shear the- pin 30a which connects the sleeve
' ,
y
.
» The fluid pressure passing through the ports Ila
-In operation it is intended that fluid under
causes the paclrcr> sleeve Ila to expand. as illus
pressure be directed throughv ports .32a to be
trated in Fig. 9,'and thereafter compresses the
tween the exterior oi' the' body- .l la and the in
sleeve, which causes it to elongate and, in. so- do
terior of the packer sleeve 33a, causing expan
siony of the latter. As before stated, we 4have ‘ ing, it shears the pins lla which connect the slid
found in actual practice' that by creating this ing cone 36a to the body Ila and tends to move 70
pressure between the packer sleeve and the body. the cone 36a upwardly withsuii'icient force'to
that the packer sleeve will'ñrst expand into con
shear the pins 31a, 31e and l1d.` 'I‘he moment
tact with the casing whereupon its elongating that these pins aresheared. lthe -slips ia .are
movement' is suilicient to shear the pins of the
upper cone 31 and cause the same to move up
i
caused to move longitudinally into contact with
an enlargement “a carried by the body and
_
5..
2,121,051'
‘radially outward 4int-o engagement with' the prevent fiuidirom pasing upwardly through the
body ' lia.
'
-Il‘rorn- the foregoing itis obvious that we have.
The pump pressure above the valve ,Hai is then
relieved and a strain is taken on the running-in
provided a cement retainer which will resist dis
lodgement either'by pressures above it orby pres- '
tubing 49a which moves ythe body -I'Ia and cone
is
,sures below it. It is further pointed out thatthe
' “a upwardly relative to the up slips ' ia, conse
Aqueutly moving the slips la outwardly into a device may not only be used in various kinds of
> cementing operations but, may likewise lbe used
firm gripping contact with the casing.
as a bridge plug.
. During this movement'of the body the lower>
cone 'lla and -slips 2d will-move upwardly with
tliebody- compressing the packer sleeve 33a into
v sealing condition against the casing until it will
compress nov further, then the pin 31a will shear
and an annular shoulder 53a which circum
scribes the ‘body ila will engage the lower ends
.
l
,
It should be pointed outithat the___device rmay
l
10
also be used in repressuring oil sands. -This is '
brought about'by selecting- an' exhausted well
which taps the oil sandsto be repressured. Our
tool is then run _into the casing ‘of this well and
set in the same manner as previously described.A
herein` in connection with the cementing opera
of the down-¿pressure slips- 2a. »This engage
ment w’ill move the slips 2a upwardly shearing ' tior.. The packer is positioned .lust above‘the per- .
the -pins `llc- and~3'|d'. When these pins are forated section of the casing. 'Gas under high
sheared, continued upward movemento! the body ‘ pressure'is then forced downwardly through the
lla will move the slips radially outward into set running-in tubing so that it will discharge
through the port by opening the back pressure
engagement with the casing.
i
l
,
,`
After the packer sleeve 33a has been fully valve. This will raise’the pressure in the oil
-compress‘edand the slips ilrmly set, the latchl vsands and drive out additional oil into adjacent
lring Ila-oi the conella will. engage one .of the wells from' whence it may be pumped to the'sur'-~
.
latch grooves in the body ï I la and maintain the face.
the preferred .form
While we have disclosed
4
.parts in set condition, as illustrated in Fig. 10.
Thereafter pump pressure is lagain built up in the ~. oi our invention, it Kis to be understood that var
interior of the body Ila through the vrunning-’in ious changes may be made therein by those skilled
tubing 48a. 'I'his iluld pressure is built up sui- ' lin the art without departing from the spirit or the
nciently to shear the pin 30a which connects the invention as deilncdl in. the appended claims. .
' sleeve to the body'. I la. f In so shearing thislpin.
the sleeve 24a drops from the ,body Ila and the
valve lia is free to seat.y
‘
.
It is obvious from theprevious description and
from the,drawings _that any> tip-pressure built
Having thus described ourinvention. what we
claim andl desire to secure by Letters Patent is:
l; An apparatus of the clîaracter described
comprising a hollow member adapted'to be> se
cured' to the l'ower end of a string of tubing >and
up in the casing below the retainer or packer willl lowered into a well casing. slips mounted on said
tend to Amore tightly press theup-pressure slips 'memben means capable of being released con- said slips to said member and lmaintain
into contact with the` casing due to the inclined necting
ing them in an inefllective position. a packing
surfaces of the slip sockets. It is likewise --ap
40
parent that any considerable pressures built up - sleeve mounted on said member` and capable of
in the casing -above the .packer or retainer will being hydraulically actuated to release said means
tend to more tightly press the down-pressure slips and thereby releasesaid slips so that they may
into contact with- the casing. Therefore, the y move to an eii'ective position.
2. An- apparatusjof the character described
packer will resist dislodgement- either from pres-j
a hollow member to be secured to the .45
sures‘ aboveor pressures below. It will be noticed comprising
lower end of a -stringof tubing andslips mounted
thatlthe‘down-pressure slips are provided with v
downwardly extending wickers and that the up
pressure `slipsare provided with upwardly direct->
s ed wickers for gripping purposes.
The device` is.- thenready for cementinglop
erations and cement may then be pumped down
wardly through the running-in tubing "a,
thence through the body lia, opening the valve
„ lla' and discharging into the casing below the
on said-member',- coòperating means onthe slips ,
andmember whereby relative axial movement be-`
tween the slips and said >member will cause said
slips to move’radlally outward.- means capable
of being released connecting said slips'ito said
member and maintaining them in _an ineffective
position,.a packer member mounted on said mem
ber and capable of being hydraulically actuated tol
packer Ilia. ‘Alter the cementing operations v release said means and release said slips „to per 55
have been completed.- the back pressure ofthe mit them to move axially relative to said mem
' cement will close the valve- ila to prevent the
cement from pasing upwardly `-into the body Ila
and into the casing above the body.
-- -
'
„ Alter the cementing operation has `been com
pleted, the running-in tubing “a may be dis
ber to an effective position.
‘
'
3. An apparatus of the character described
comprising a hollow member to be secured to the
lower end of a string of tubing, slips mounted
on said> member, cooperative means on the slips
and member whereby relative axial movement
. connected from the body iv la dueto the left~-hand
screw connection between the two. The running \ between the slips and said member will move said
in tubing may then be pulled from the hole.
We prefer to use in connection with thisH packer
- . a circulating Jar or- joint o! any' preferred type.
If for any reason it is desired to make the de
vice a bridge plug so as to prevent the passage of
huid either upwardly through the s packer 4or
downwardly therethrough, a bridging ball Ila is
provided. This bail may be dropped through the>
running-in tubing “a andlt will seat on the
bridging valve .seat 23a. This will prevent fluid
from being-"pumped downwardly throughfthe
body lia and the back pressure valve ila will
slipsA radially outward, shearing means capable of- ' '
being sheared connecting said slips to said mem 66
ber and maintaining them in an ineiïective po-.
sition.- spring means constantly tending'to move
said slips to an effective position, a packing sleeve
mounted on said member and capable of being
elongated by hydraulic pressure, said sleeve being 70
so associated with said slips that elongation there
of will act to shear said shear means and release
said slips so that said spring means may move
said slips axially relative to said member.
l«it A device oi> the character described com .75.
'
2,131,051
' prising a member to be detachably connected to to be connected at its upperV end to the lower end
the lower end of a string of tubing, means car
of a string of tubing and-lowered thereby into a
ried by said member and operative to secure said string of well casing, a set- of .slips at, the exte
member toa well casing, a packing sleeve sur-_ rior of said member, coinciding angular faces on „
rounding said member and capable of elongation
said :slips .and- member whereby relative axial
'movement between said member and vslips will
member, said member being hollow whereby fluid move said -slips radially outward into engagement
when iiuid pressure is created between it andsaid '
discharged therein through said -tube may pass
with the casing, means for detachably connect
downwardly through said member, said member
ing said slips 'to the vmember to maintain the
slips in ineiîective position, a hydraulically actu-_ 10
ated packing sleeve for detaching said slips from
10 having a port formed therein to direct-duid be-A
tween it and said sleeve, valve means normally
preventing the ñow of iluid through said-port, and
the 'membe?spring means associated with the
iluid pressure actuated means to move said valve
to uncover said port.
.
\~
slips and member constantly tending to' cause
' relative axiaLmovement between the slips and
‘
5. An apparatus of the character described` said member thereby moving said slips radially
comprising a hollow member to' be connected to
the lower end of a string of tubing, a ñ‘i‘st set
15
outward into engagement with the casing, and
means for subsequently expanding said .packing
means to packing position and latching it in such
of slips mountedbn said member, a second set
of slips mounted on said member, cooperative
position.>
20 means between said slips and on said member
whereby relative axial movement vbetween said
'
l
»`
A
_
'»
9. An apparatus of the character described
comprisinga hollow cylindrical member adapted
member and said slips will move said slips-radial- .
- ly outward, shear means connecting said slips
to said member in ineffective positions, a hy
draulically actuated packing sleeve on- said. mem
'ber operative to' shear said means ofthe iirst
set of slips so that they may move to an eiîective
to be connectedto the. lower end 'of a string of
tubing and lowered thereby into a string of -well
casing, a set- of slips at the exterior of said mem
ber, coinciding angular vfaces on saidslips and
`member whereby relative axial movement be
tween said member 'and slips will move said slips
position, and means operative upon subsequent
radially outward into engagement with the, cas'- '
endwise movement of said member to` shear the "ing, means for detachably connecting said slips
30 shear means of the second _named slips to relèase
the same.
to the member 'to maintainthefsli'ps in ineffec
_
tive position, a hydraulically4 actuated packing ,
6. ¿inA apparatus .of the character described
sleeve for detachingsaid vslips from the member,
comprising a hollow member adapted to be de
spring means associated withthe slips and mem
tachably connected to the lower end of a string`
of tubing, a -ñrst set of slips mounted on‘ said
ber constantly tending to, cause relative axial’
member and-a second set of slips mounted on said _
thereby moving -said slips radially outward into
movement between the slips and said member
member, spring means associated with said means engagement with the casing,and means for sub
and said Amember and constantly tending tomove sequently expanding said-packingmeans to pack- _
said slips- axially'relative to said member, co-l _ing position and latching it in such position, said
40 operative mean's on said slips and said member packing means being expanded into’- packing `en
causing said slips to move radially outward upon gagement with the'intei'lor of the well casing by
Irelative movement between the same and said upward'movement „of said member subsequent to
member. shear means connecting said slips to ' the releasing of said slips. ‘
said member, a packing sleeve mounted on said
10. A device of the character described com
45 member capableof being hydraulically actuated Y prising a -body adapted to be connected to the p
to shear said shear means of the ñrst s_et of slips, lower end of a string of tubing and lowered
and means on said member and operative upon thereby into a well casing, a slip sleeve carried by
endwise movement of said member subsequent to said Abody and »normally secured against move
theshearing of the shear means onthe first set _
of slips to engage the second set of -slips and
50
ment coaxially therealong, slips carried by said
sleeve and detachably- secured thereto in their
shear the shear means thereof t5 release the same. innermost positions, cooperative means on the
,- 7. An apparatus of the character described sleeve and slips for moving the latter outwardly
comprising a hollow member to be connected to when they are detached from the'sleeve, a packer
the lower end of a string of tubing, aßilrst set of sleeve surroundingthe body and adapted to ex
55 slips mounted on said member, a second set of pand and- elongate when the iluid pressure'is built 55
slips mounted on said member, cooperative :means ' up Abetween it?and the body, said packer sleeve
between said slips and on said member whereby
relative axial movement between said'member,
and said slips will move said slips radially iout
ward, shear means connecting said slips tosaid
`member in ineiïective positions, a packing mem
ber adapted to be elongated by hydraulic pressure
and thereby operative to shear said means of
the mst set of slips so that they maymove to
65 ‘an eil'ective position and means operative upon '
subsequent movement of said member- down
wardly to shear the shear means of the lsecond
slips from the slip sleeve, said _ packer sleeve>
being .capable of thereafter__ being axially'com
pressed by upward movement of the body, said
upward movement also detaching said slip sleeve
from the body and forcing said slips into g/ripping
engagement with the casing.
_
.
_f y
.
11;- .Anl apparatusÍ of the character described
comprising. a hollow body adapted tov be detach
ably :secured to the lower- end of a string of tub
_ing and lowered into a well casing, segmental
slips mounted onvsaid body and detachably con
nected thereto in an ineilective position, a longi
named slips to release the same, the lower end of
said member being i'ormed with a valve port,~a
70 valve cooperating with said port to close the same,
means normally maintaining said valve inf-open
position and hydraulically actuated means for
Vrendering said means inetrective.
tudinally expansible member. mounted on said
body and, capable of beingA expanded by -fluid
pressure built up in `said body to engage said slips
and move them longitudinally o1' the body.
- 8. ‘Anapparatus of the character descri ed
'i »comprising a hollow cylindrical member adap
and slips vbeing soA relatively associated that upon
elongation of the packer sleeve it will detach said
_
12. An apparatus oi' the character described 75
9,121,051
of said member, a cone on said member, coin
ciding conical faces on said slips and cone where
by relative axial movement between said c_one '
_ comprising a lhollow body to be -secured to the
lower end of a string of tubing, segmental slips
mounted on said body.. a cone on said body, co
operating cone faces on the slips and cone
and slips `will move said slips radially outward
into engagement with the casing, means for de
tachably connecting said slips to the member and
same will cause said slips to move radially out
cone to maintain the slips in an ineffective posi’
ward, a longitudinally expansible member' tion,
a hydraulically actuated pa'cking sleeve for
, ’mounted on said body and capable of being ex
said slips from the member and cone
panded by iiuid pressure built up' in the body to detaching
and
causing
relative axial movement between
_10 cause relative axial movement between the slips the slips and said cone thereby moving said slips
' and the cone.
.
radially outward into engagement with the cas
13. An apparatus ofthe character described» ing,
and means for subsequently expanding said
comprising a hollow body to be detachabhr secured _packing
sleeve to packing position andlatching it
to the lower end of a string of tubing, seg
15
in
such
position.
`
mental slips mounted on said body, a -cone
17. An apparatus of the character described
whereby relative axial movement between the
mounted on the body, cooperative cone faces on
comprising a hollow cylindrical member adapted ' ’
the'slips and cone whereby relative axial move
to be connected to the lower end of a string of-
‘ment between the slips and said cone will move
tubing and lowered thereby into a string of well ,« I
said slips radially outward, shearing means capa- _ casing, a Íset of slips at the exterior of said mem 20
ble of being sheared connecting said slips to said
ber, a cone on the member, coinciding conical
body‘and maintaining them in an ineffective posi ‘faces
on said slips and cone whereby relative
tion, a sleeve mounted on said body and capable oi'
axial movement between said cone and slips will
move said slips radially outward into engagement
being elongated by hydraulic pressure >built up
in said body, said sleeve being so associated with
25 said slips and vcone that elongation thereof will
act to cause relative axial movement between the
with the casing, means for detachably connecting 25
said slipsto themember to maintain the slips in
ineffective position, a hydraulically actuated
packing sleeve for detaching said slips from «the
slips and cone and shear said shear means. .
14. An apparatus of the character described
body to be detachably con
member and for causing rela’tive axial movement
between the slips and said member thereby mov 30
' comprising a hollow
so nected to the lower end of_ a string of tubing, a
said _slips radially outward into engagement
ilrst set of slipsv mounted on _said body, a second ing
set of slips mounted on said body, two cones on, with the casing', and means for subsequently ex
panding said Apacking sleeve tb packing position
and latching it in such position,v said packing
sleeve being'expande‘d into packing engagement
the body and associated with‘said _sets of'slips
whereby relative axial movement between said
35 cones .and said slips will move said slips radially
outward, shear means connecting said slips to
said body in ineffective positions, a hydraulically
actuated packing sleeve on said body and con
nected with one of .said cones and operative upon
4o fluid pressure being built up therein to move the
said cone relativeto the first set of slips and
shear> said -means of Ithe ñrst set of _slips and
35
with the interior» of the well casing >by upward
- movement of said member subsequent to the
releasing of said slips. . _
' _
'
'
`
18. A device of the character described. com
prising a body adaptedfto beconnectedjto the 40
' move the sameto an eilective position, and means
. operative upon subsequent endwise movement of
lower end of a string "fof tubing and lowered I
thereby into a well casing. a pair of cones 'car
_ried by said body and normally secured against
movement coaxially therealong, two sets of slips
said body to move the second set of slips axially - detachably secured thereto in their innermost po.-`
~sitions, cooperative conical faces on thecones and
- relative to ‘~ the other cone to shear the shear
slips for moving the> latter outwardly when the
45
45
means of the second named slips and move them
`to an effective position.
15. An apparatus of the character >described
comprising a hollow body adapted to be detach
ably connected. to the lower end of a >string of
tubing, a first set o! slips mounted on said body
and a second: set of slips mounted on said body,`
a iirst and a second cone on said. body and asso
ciated with said slips to move the same radially
outward upon relative movement between the
cones and said slips, shear means connecting
said cones to said body,- shear means detachably.Í
connecting said slips to said cones and body, a
packing sleeve mounted on said body and con
nected with said cones and capable of being-hy
draulically actuated to shear saidshear means
of the iirst cone, and means- on said body and
conesare detached from the body by relative
axial movement therebetween, a packer sleeve
-surrounding'the body and adapted to expand
so
and, elongate when the duid-pressure is built up
between it and the body, said _packer sleeve and
cones being so relatively associated that upon
elongation cf the packer -sleeve it Ywill- operate
one cone and set one set of said slips, said4 packer 55
sleeve being capable of thereafter being axially '
_compressed by upward movement of the body,
said upward-#movementfalso setting the second
set of slips by moving the same relative to the second cone.
-
19. An> apparatus of the character described
comprising a hollow body adapted to be secured
to the lower end of a string of tubing and lowered
ay well casing, slips mounted on said body
operative upon endwise movement of said body into
subsequent to the shearing- of the shear means ~ adapted for radial movement, an inñatable mem
on the nrst cone, to engage the second set of
slips and move the same longitudinally» relative
to the second cone.
16. An apparatus of the character described
comprising a hollow cylindrical member adapted
to be connected at its upper endl to the vlower end
_` `of a string of tubing and lowered thereby' into a
string of well casing. a set of slips at the exterior
a
lier carried by said body in cooperative relation
ship with said slips for imparting radial move-_
ment thereto and means for applying iluid pres
sure to said member to inilate the same and
actuate
saidslips.
'
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\
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_ 'moms M, moan.
casamos E. soar..
`
70
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