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Патент USA US2106392

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JUL 25, 1938«
I
s. A. GulBERsoN, 3D
ANCHORING ` DEVI CE
2,105,392
Jan. 25, 1938. ,_
s. A. GUIBERSON, 3D
2,l06,392>
ANCHORING DEVICE
Filed Nov. 9e 1936
2 sheets-sheet 2
UNITED STATES'PATENT ori-‘ice
¿Nononnvc DEVICE
Samuel Allen (Sluibcrson,A III, Dallas, Tex.,- as
signor to The Guìberson Corporation, Dallas,
Tex., a corporation oi' Delaware
'
.
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Application November 9,_ 1936, Serial No. 109,903
4 Claims. (Cl. 166-12)
This invention relates to new and useful improvements inanchoring’ devices. ' _
One object of the invention is to provide anV
improved anchoring device particularly adapted
5 fOr USS With the Usual Slips, 01‘ @ther gripping
means, of a well packer, or similar device.
'
An important `object of the invention is to
provide an improved anchoring device which is
simple in structure and which is constructed to
3o readily actuate the gripping means of a well
upper mandrel I3 which are connected. by a _
coupling collar I4. The mandrels are connected
in the tubing string by the usual coupling collars
I2', and it is the common practice to control the _
setting of the tool by- some means which is car- ‘5
ried by the tubing and actuated by the motion
cf said tubing. It is the purpose of this inven
tion to provide a simple anchoring device for
controllingA the setting of the gripping means,
such'as slips (not shown), which are commonly 10
' packer, or similar device, which is lowered into ‘ used to hold the packers or other tools-.in a set
a well casing and set in position therein.
'
_
_Another object of the invention is to provide
an improved anchoring device including the
i5 usual spring assembly movably mounted on a
position in the well casing.
.
As clearly shown in Figure 1,` the anchoring
device is mounted on the lower mandrel I2,
while the packer or -other tool, including the 15
mandrel, said assembly having a notch adapted
gripping slips (not shown); is mounted there
to receive the lower endof a rib on said mandrel,
above on the upper mandrel I3..
whereby the assembly and mandrel move as a
unit on the down-stroka'with means for disen-
@à gaging said rib from the notch for permitting a
downward movement of the mandrel with relation to the assembly, the structure ‘oeing such
that the usual spring assembly and mandrel may
be used, whereby manufacturing costs are mate'25 rially reduced.
ì
'
` f'
-The anchoring device includes a ring I5, which
-is slidably mounted on the mandrel I2 at its
lower end, being supported on the upper» end of 20
the lower coupling collar I2’. This ring has the
flower ends o'f outwardly bowed or curved fric
tion springs 'IB secured thereto in spaced relation
therearound. The upper ends of said springs
are similarly secured to an upper control collar 2.
A construction designed to carry out the invention will bev hereinafter described, together
or sleeve Il. This control collar surrounds the
coupling Iâl and has an inside diameter greater
with other features of the invention. _
than the outside diameter of said coupling,
The invention will be more readily understood whereby the collar may freely pass thereover.
@o from a reading of the following specification Three vfriction springs are shown, but any de- 30 »Y
and by reference to the accompanying drawings, _sired number may » be employed, and these
in which an example of the invention is shown, ~»springs engageÄ the walls of the casing -Ill and by
>and wherein:
_
such frictional engagement prevent turning of
Figure 1 is a view, partly in elevation and the spring assembly within the> casing.
35 partly in section, of an anchoring device con- y
lillongates vertically extending lugs I8 and I9 3
structed in accordanceI with the invention and are secured to. and extend upwardly from the
disposed within a well casing,
_
Figure 2 is a similarv view taken at right angles
e0
upper end of the vring I5 ,and are spaced from
eachother. [A shorter lug'20 also extends up
to the -view shown in Figure l, `
wardly froml the ring. I5 _and is positioned be
'FlgureB is a view, partly in section and partly . tween the'elongate lugs at a point close to the _40
in elevation, ofthe device in position for oper- _lug I8, whereby a vertical notch lß’» is formed
ating the slips or other gripping means (not therebetween. It is obvious that the side of theV
, shown),
notch I8’ formed by the elongate lug I8 is great
Figure 4 is a horizontal, cross-sectional view l er than that side formed by the shorter lug 20.
¿5 take'n on the line hl-â of Figure l, and
The mandrel I2 is. provided with an elongate 45
>Figure 5 is a horizontal, cross-sectional view rib or key ZI which is welded, or >otherwise se- '
taken on the vline 5-5 of Figure l.
cured or formed, on the outer surface of said
In the drawings, the numeral in designates
the usual well casing within which the tubing
co II extends. It is the common practice to place
certain tools, such as packers and the like, ,with-
mandrel and‘extends parallel to its axis. The
lower end of the rib 'is spaced from the coupling
I2' and is adapted to engage in the notch I8' 50
formed between the lugs I8 and 20 whereupon
lin the Well Casing at a desired Dfbint, and it fre- - movement of the mandrel is imparted to the ring
quently becomes necessary to remove or to .-re- _I5 and the spring assembly. When the rib is
position these tools in the casing, These .tools engaged in the notch, Fas clearly shown in Fig
„5 ordinarily include a lower mandrel I2 and an A ure 1, the lower end of the ring I5 isspaced from 55
2
the upper end ofthe coupling I2' a distance lugs on the ring for conñning the rib within pre
slightly greater than the height of the shorter determined limits therebetween, a shorter _lug on
lug 20. It will be obvious, therefore, that, when , the ring adjacent one of the elongate lugs form
the mandrel is moved upwardly, the lower end ing a notch therebetween for receiving the rib
5 of the rib will be raised above the upper end to connect the mandrel and assembly whereby
of the shorter lug 20 before the ring i5 engages they move downwardly as a unit, said ring hav
the coupling and upon rotation of the mandrel ing a, slot formed therein for receiving the rib
the rib will move out of allnement with the notch and spaced from the notch, whereby the mandrel
,
I8".
However, this space between the collar. i2'
10and lower end of the ring i5 is less than the
height of the elongate lugs it and it, whereby
the lower end of the rib, while clearing the top
of the shorter lug ät, will be confined between
said elongate lugs.
l5
' -
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An internal longitudinal slot or groove t2 is
provided in _the inner periphery of the ring l5
contiguous to one side of the other elongate lug
it, whereby, .when the rib di is removed from
the notch id' and rotated into engagement with
20 the lugie, a downward movement of the man
drel will cause the lowei~ end ci said rib to be
guided into the slot ät’. This permits downward
movement “of the mandrel with relation to the
spring assembly, which is held stationary due
25 to the frictional engagement of the springs le
_ with the casing wall.
Upon continued downward
movement of the mandrel, the slips or other grip"
ping means (not shown) ’which are supported
upon the collar il are expanded in the usual
30 manner and the tool is set.
it is noted that the
length of the rib 2i is such that the upper end
thereof remains in constant engagement with the
slot 22 as the gripping means (not shown? moves
to its set position before said rib passes entirely
may move downwardly with relation to the as
sembly.'
,
2. An anchoring device including, a mandrel,
an elongate rib on the mandrel, a spring assem
bly slidably mounted on the mandrel and in
cluding a ring surrounding the mandrel, elon
gate lugs on the ring for coniining the rib Within is
predetermined limits therebetween, a shorter lug
`on the ring adjacent one of the elongate lugs
forming a notch therebetween for receiving the
rib to connect the mandrel and assembly where
`by they move downwardly as a unit, said ring 20
having a slot formed therein for receiving the
rib and adjacent the other elongate lug whereby
when the rib has been disengaged from. the-notch
and the mandrel rotated to engage said rib with
this lug, said lng will act to guide the rib into 25
said slot upon downward movement'of the man
’ drel.
3. An v`anchoring device including, e. mandrel,
an elongate rib on the mandrel, a spring assem
bly slidably mounted' on the mandrel and in 30
cluding an upper ring andi a lower ring sur
rounding the mandrel and irlction springs con
necting the rings, elongate lugs on the lower ring
for confining the rib within predetermined llm
its therebetween, a shorter lug on said ring ad 35
`
‘When it is desired to‘reposition or remove the jacent one of the elongate lugs and forming a
tool, it is only necessary to lift the mandrel until notch therebetween for receiving the rib to con
the lower end of the rib 2i is removed from the nect the mandrel and assembly whereby they
slot 22, whereupon the rib and mandrel may `move downwardly as a unit, said lower ring also
40 be rotated and said rib reengaged in the notch having a slot formed therein adjacent the other
id'. With the mandrel in this position the slips elongate lug and adapted to receive the rib
`or other gripping means (not shown)v are moved . whereby when the rib has been disengaged from
thereby to their retracted position and the tool the notch and the mandrel rotated to engage therib with this lug, said lug will act to guide the>
may be lifted from the well casing.
»
45
It will be seen that the device is simple in rib into said. slot upon downward movement of
'
structure and economical in manufacture since the mandrel.
4. An anchoring device including a mandrel, a ‘I
it is only necessary to mount the lugs i8, lâ and
20 on the ring i5 and to provide the groove 22 ring slidable on said mandrel, friction devices
therein, and to secure the rib 2i on the mandrel- ' connected to said ring, a rib secured to the man
driel, elongate lugs projecting from said ring for
50 i2. This structure obviates the necessity of hav
ing an additional sleeve, in which a J-slot of the coniining the rib within predetermined limits j
35 through the slot.
usual _type is formed, for operating the spring
55
therebetween, a shorter lug on the ring between
assembly and greatly reduces the cost of manu
said elongate lugs forming a notch between the
facture.
shorter lug and one of the elongate 'lugs for re- -
`
,
What I claim and desire to secure by Letters
Patent, is:
.
1. An anchoring device including, a mandrel,
> in elongate rib on the mandrel, a spring assem
bly slidably mounted on the mandrel and includ
60 ng a ring surrounding _the mandrel, elongate
y -
ceiving the rib when the mandrel is being low
ered, said ring having a slot between the shorter
lug and the other elongate lug through which
the rib may slide when the mandrel is moved
downwardly relative to the ring.
` ‘
SAMUEL ALLEN GUIBERSONyIII.,
60
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