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Патент USA US2109745

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March 1, 1938.
‘L. H. HAYWARD
WELL 'i‘ES'I-‘ING APPARATUS
2,109,745 .
Filed May El, 1955
£1131
3
ATTORNEY.
Patented Mar, 1, 1938
2,109,745
‘UNITED STATES‘ PATENT OFFICE
-2,109,74_5
WELL TESTING APPARATUS
Landes H. Hayward, Long Beach, Calif.
Application May 21, 1935, Serial No.v 22,531
19 Claims. (01. 166-1)
This invention relates to improvements in well
testing apparatus and particularly to devices used sion of cooperative means between the upper end
in connection with oil wells for making water of the well packer and packer-engaging plunger,
shut-off, formation, and other tests incident to whereby to facilitate the separation thereof prior’ .»
the drilling thereof.
=
to withdrawing the testing apparatus from the
v
My improved testing device is adapted to be
attached to the lower end of a string of drill pipe
from which the drilling bit has been removed, for
the purpose of making possible the controlled ad
10 mittance of materials to be tested upwardly
thereinto. Broadly, the device includes a cylin
der, from which depends a hollow elongated mem
ber, bearing a strainer on its‘ lower end in advance
of a packer.
The hollow elongated member ex
end, with outlet openings leading through its side
Walls. A spring acts on said elongated member
to normally retain the outlet openings in advance
20 of the packing means, thereby excluding ?uid
from entering the cylinder above said packing
means. When the packer is made to engage the
walls of the well and it is desired to take a sample
_ ofv the material to be tested, the drill pipe is low~w
ered and the packing means correspondingly
at any level between the surface and bottom of a
well, and which is compact, reliable, and econom
ical to manufacture and maintain.
'
My invention possesses many other advantages
and has other objects which may be made more
easily apparent from a consideration of one em
claims.
>
In the drawing:
Figure 1 shows the lower end of my testing ap
paratus in position within‘a well casing and about
moved downwardly over the elongated member
to be operated for taking a water shut-off test.
Figure 2 shows the upper portion of the testing
to uncover the outlet openings therein, thus per
mitting the ?ow of ?uid into the cylinder from
whence its flow into the drill pipe is controlled in
apparatus within the well casing.
30 a manner hereinafter described.
An object of the invention is the provision of a
testing tool embodying a valve structure of the
character described, whereby to eliminate com-.
drill pipe.
A_ further feature of the invention resides in
5 .
A still further object of the invention is to pro
vide a device which can be used for obtaining tests
bodiment thereof. For this purpose I have shown
one form in the accompanying drawing and form 15
ing part of the present speci?cation. I shall now
proceed to describe this form in detail, which illus
trates the general principles of my invention;
but it is to be understood that this description is
not to be taken in a limiting sense, since the scope
of the invention is best de?ned in the appended
15 tends upwardly into the cylinder through packing
means carried thereby, and is closed at its upper
plicated valves and by-pass constructions com
35 monly employed in this type of tool; and to pro
vide such a testing device which is operable by the
vertical movement of the drill pipe.
Another object of ,the invention is the provi
sion of a closure above the packing means, for re
40 straining the mud-laden ?uid against ?owing up
wardly into the drill pipe, should the valve struc
ture be prematurely operated as the tool isbe
ing lowered into the well; to further provide a
closure which is adapted to be broken at the
45 proper time, as by dropping an element down the
well.
’
'
and,
Figure 6 is an enlarged transverse sectional view
taken as indicated by line 6-6 of Figure 2.
Referring particularly to Figure 2, the appa m.
ratus comprises upper and lower cylinders l3 and 5
H, the adjacent ends of which are threaded onto
an inside coupling IS. The lower end of the cyl
50 from the hollow elongated valve member, where- - inder I4 is provided with an annular interior
by to provide a hydraulic cushion forfacilitating shoulder l6 and a stumng box i1 therebelow.
A plunger member l8 has a longitudinal open
the smooth movement of said packing means past
ing l9 therethrough and extends through the
the outlet openings through said elongated mem
ber
'
Another feature of the invention is the provi
,
The embodiment of my ‘testing apparatus illus
trated in the drawing, is shown positioned within
the lower end of'the well casing 40, just above the
“rat-hole” II, for making a water ‘shut-off test,
the casing having been cemented in as at 12.
the provision of a chamber below the packing
means, into which the mud-laden ?uid can flow
55
'
Figure 3 ‘is an enlarged fragmentary sectional
view through the well casing, showing therein the‘ 30
‘cooperative ends of the well packer and plunger
member for expanding the same.
Figure 4 is an enlarged transverse sectional
view taken as indicated by line 4-4 of Figure 1.
Figure 5 is an enlarged transverse sectional
view taken as indicated by line
of Figure 2
stu?ing box I‘! into the lower end of the cylinder
I‘. It is provided with an enlarged end 20 which
bears against ‘the annular shoulder l6. Said
2,109,745
plunger l8 depends from the lower end of’ cylin
low drill pipe. ' Such an element is indicated by
dotted lines as at 55 in Figure 2 of the‘ drawing,
' der l4 and is threaded into one end of a coupling
and is adapted to strike thev plunger 56, which in
2| (Figure 1) which has an opening 22 there
through. Said coupling has formed on its lower
end, a vthreaded pin 23 which screws into a
threadedbox 24 of the plunger head 25.
turn strikes and breaks the disc 52. The head
of the plunger is provided with a number of open
ings 51 through which ?uid is permitted to ?ow
The
into‘ the drill pipe, and the striking end thereof
plunger head has an opening 26 therein and is
is normally held slightly above the disc by a
internally threaded at its lower end to receive
spring 51a. A perforated plate 58 is positioned
the upper threaded end of a hollow tubular mem
beneath the disc within the lower cylindrical sec
tion 4|, for the purpose of catching the disc
ber 21, which bears a perforated nipple or strainer
10 29 on its lower end and a packer generally desig
nated 30, which will hereinafter be more fully
described. The enlarged upper end of plunger I3
is internally threaded to receive the lower thread
fragments.
-
Thewells in which applicant’s testing appara
tus is employed, are usually ?lled with mud-laden
15
fluid whose hydraulic pressure is often in excess
ed
end
of
a
hollow
tubular
stem
3|,
which
ex
of
the
head
upon
the
formation
?uids
to
be
15
tends upwardly through the inside coupling l5 tested, and would prevent their ?ow into the
and in sliding engagement with packing 32 car
apparatus, were it not for some means of seal
ried therein. A cylindrical cup 33 fits snugly ‘ ing or “packing off” the hole above the strainer
20
into the lower end of the cylinder l3 and is pro
on the end of the hollow tubular member 21.
vided
on
its
lower
end
with
a
threaded
neck
34
Furthermore, without such a packer it would be
20
which screws into the upper end of the coupling impossible to obtain an uncontaminated sample
l5 and against the packing 32. Said cup'serves of the ?uid to be tested.
to shield the lower end of the cylinder l3 against
Various types of packers might be used on ap- being cut away by the flow of abrasive-laden ?uid plicant’s testing device, depending upon the char 25'
acter of the well and the nature of the test to be
25 through outlet openings 35 in the hollow stem\3|,
when they are rendered communicative with the made. However, a packing apparatus such as is
interior of said cylinder upon the downward shown in Figure l of the drawing, is particularly
movement of coupling l5 and its packing 32. The well adapted for use with applicant’s tool when
outlet openings are transversely disposed in the used within a well casing. Its construction‘is well
side
of the hollow stem} 3| which is closed known and will therefore only [be briefly herein
‘so at itswalls
upper end. vA compression spring 35 is after described, for the purpose of making‘ clear
provided within the lower cylinder |4 between its operation relative to the rest of the testing
the coupling [5 and enlarged end 20 of the plunger
.
'
I8, for the purpose of normally retaining the apparatus.
In Figure 1, the packing device. generally desig 35
outlet
openings
35
below
the
packing
32.
nated 30, is carriedon the hollow tubular mem
35
A secondary sealing unit generally designated ber 21 depending from the lower end of the
38, is interposed between the upper end of the plunger 18. Said tubular member carries a pin
cylinder l3 and the lower end of a drill pipe 39, 59 which extends into the short arm of an angle
for insuring against the flow of ?uid into said slot 60 formed. in a sleeve 6|, which in turn 40
40
drill pipe should the sliding valve structure
heretofore described be prematurely operated.
Said sealing unit comprises upper and lower cy
lindrical sections 40 and 4|, which are connected
by a coupling 42 into which they are threaded.
The upper end of section 40 is provided with a
45 threaded box for receiving the threaded pin 43
of a coupling 44. Said coupling has an opening
45‘ therein and is internally threaded at its upper
end to receive the threaded end of the hollow
drill pipe 39. The lower end of section 4| vis
50 provided with a threaded pin 46 which screws
into a threaded box 41 formed in the upper end
of cylinder l3. An opening 411! in cylinder |3
provides communication between the cylinder l3
and‘the interior of the sealing unit. An interior
55
tubular member 48 has an opening 43 therein
carries a plurality of upwardly extending slips
52. Said slips are connected through links 63, to '
a collar 64, rotatably mounted on the upper end
of the sleeve 6|, and enter tapereddove-tailed
grooves 65 formed in the lower skirt “of an ex
45
pansible packer 61. The sleeve 6| also carries
a lower stationary collar 68 and an upper slidable
collar 69, which are connected by spring anchor
strips 10 adapted to bear against the inner wall
of the casing "I. These anchor strips fric 50
tionally retain the sleeve 6| in place within the
casing ‘as the slips are moved into and out ‘of en
gagement therewith by the vertical movement of
the expansible packer 61. The packer skirt 56
surrounds the hollow tubular member 21 and is 55
spaced therefrom to permit the flow of ?uid there
between. It is provided on its lower end with
inwardly extending lugs 1| which bear against
the member 21 and rest upon an nnular shoulder
,1|a formed exteriorly thereof. A plurality of 60
expansible packing rings 12 are positioned be
tween the upper end of the skirt 65 and the packer
and is supported by an annular ?ange 50 thereon,
which is held between the adjacent ends of the
sections 40 and 4|. The upper end of said
opening is enlarged to de?ne an annular seat
60
5| for supporting a disc 52, and is threaded to
receive a nipple 53 which serves to hold said disc - head 13, which in turn carries a depending sleeve
_ against the annular seat and is provided with an
opening 54 somewhat smaller than the opening
65
49. Thus, it will be seen, that the bearing sur
face on top of the disc is greater than that on
the bottom thereof. Furthermore, a beveled boss
is formed on the underside of the disc and is
‘greater in diameter than the opening "in the
The above construction and arrange
70 nipple.
ment of the disc and its supporting members,
renders said disc capable of withstanding any
hydraulic pressures from beneath and at the
same time permits it to be easily broken from
above as by dropping an element down the hol
-76
14 for preventing the inward expansion of the
packing rings when they are compressed as by
applying pressure to the packer head. 13. The
sleeve is spaced from the tubular member 21 to
permit the flow of ?uid therebetween, and car
ries lugs 15 at‘ its upper end, which bear against
said stem for laterally supporting the upper end
of the packer. Said sleeve is slidable within the
upper end of the skirt 65 and relative to the pack
ing rings 12.
_
Applicant’s testing apparatus is assembled as
shown in the drawing preparatory to being low-w
2,109,745
ered into a well, which is usually ?lled with mud
laden ?uid. The spring strips 10 are contracted
into the casing as the apparatus enters the same.
The lowering of the apparatus into the well
3
monly employed beveled valve and seat arrange
ment, it is di?lcult to break the seal formed be
tween the cooperating surfaces of these members.
Applicant overcomes thisdimculty by the pro
vision of an annular, yieldable, ring 16 on the
packer head 13, shown clearest in Figures 3 and 4.
Said ring is embedded in a dove-tailed groove 11
formed in the packer head 13, and extends there
above to form‘ a seat for the plunger head 25,
is facilitated by the ability of the mud-laden ?uid
to pass upwardly through the space de?ned be
tween the outside of the tubular member 21 and
the expansible packer 61. It should be under
stood that the weight of the plunger member I8
10 together with the packing apparatus carried which is provided with an annular groove 18 to
10
therebelow, is suspended from the shoulder l6 accommodate the yieldable ring 16. formed within the lower cylinder I 4. The com
I claim;
pressive resistance of the spring 36 is sumcient to
1. A well testing apparatus comprising rela
normally restrain the plunger I 8 from rising in 'tively movable members having ?uid passages
the cylinder M as the apparatus is moved down
therein, valve means for rendering said passages 15
wardly in the well.
.
communicative upon relative movement of sai
When the apparatus has been lowered to the members, a well packer supported for‘ relative
desired elevation, the drill pipe is rotated slight
movement on one of said members and having a
ly until the pin 59 of the tubular member 21 is ?uid by-pass therethrough, a plunger ‘head sup
20 moved into alignment with the vertical arm of ported by the same member-for movement rela
20
the slot 60 in the sleeve 6|, it being understood tive to said packer, and a sealing ring between
that said sleeve is supported by the frictional en
said plunger head and said packer which is
gagement of the spring strips 10 with the casing adapted to be compressed therebetween for form
wall. Upon further lowering of the drill pipe, ing a ?uid tight seal of the by-pass.
25 the expansible packer 61 ‘moves downwardly with
2. A well testing apparatus comprising a pair 25
the tubular member 21 and urges the slips out
of telescoping members having ?uid passages
wardlyinto engagement with the casing, where
they serve as supports for said ‘packer as the
packing rings thereof are expanded to “seal off”
the casing. This is accomplished by still further
lowering the drillpipe until the plunger head 25
rests upon the upper end of the expansible packer.
The weight of the drill pipe compresses the pack
ing rings, causing them to expand into engage
85 ment with the casing, it being understood that
the compressive resistance of the spring 36 is
sui?cient to withstand the weight required to'ex
pand the packer without permitting the uncov
ering of the outlet openings 35.
When the expansible packer is set as hereto
40
fore described, a rod-or other suitable element
is dropped through the hollow drill pipe and
strikes the head of plunger 56, which in turn
' strikes and breaks the disc 52. The drill pipe
is then lowered and the spring36 compressed,
until the stu?ing or packing 32 in coupling l5
moves sufficiently downward to uncover the out
let openings 35 in the side walls of the hollow
stem 3|. The formation ?uid enters the strainer‘
50 29 and flows upwardly in said hollow stem,
through the outlet openings 35, and from thence
through the secondary sealing unit 38 into the
drill pipe. After the ?uid is thus trapped, the
drill pipe is raised until the packing 32 is again
55 moved to its normal position over the outlet open
ings. Although the operation of the valve is de
scribed as being subsequent to the breaking of
the closure disc, it should be understood that it
might be desirable in certain instances to open
60 the valve before breaking said disc.
When the outlet openings 35 are positioned be-.
low the packing 32, ?uid enters the lower‘ cylin
der M. ‘This column of liquid augments the ac
' tion of the compression spring 36. in preventing
the premature operation of the sliding valve,
should the apparatus strike an obstruction while
being lowered into the well. Furthermore, it acts
- as a cushion for the valve coupling‘ I5 as it is
lowered within the cylinder N, the ?uid being
forced from the cylinder back through the outlet
openings into the hollow stem 3|.
'
In order to raise the apparatus it is necessary
to move the plunger head 25 away from the pack
er .head 13 to permit the free passage of ?uid
therein and adapted to be lowered as a unit by a
hollow tubing into a ?uid ?lled well, the ?uid
passage .in one of saidmembers being continu
ously communicative with said well and the pas 30'
sage inthe other of said members being com
municative with said hollow tubing, valve means
between said members for rendering their ?uid
passages communicative upon relative movement
of said members whereby to admit ?uid from one 85
?uid passage to the other, and means forming
a ?uid tight seal between said ?uid passages when
said members are in their initial relative posi
tions, and means forming a secondary seal be
tween said valve means and said hollow tubing,
whereby to prevent the admittance of ?uid to
said hollow tubing upon an inadvertent opening
of said valve, said secondary seal being adapted
to be broken by dropping an implement through
the hollow tubing.
3. A ?uid sealing device adapted to be inter 45
posed between a well testing tool and a string of
hollow tubing for supporting the device within a
well, embodying a frangible disc, a pair of clamp
ing members in bearing relation with the op
posite sides of said disc for supporting the same
and having substantially coaxial passages there
through of different cross sectional areas where- ‘
by to render said frangible disc capable of with
standing a greater force against one of its sides
than against the other of its sides.
4. A ?uid sealing device adapted to be inter
posed between a well testing tool and a string of
hollow tubing in a well, embodying a pair of
clamping members having coaxial passages there
through of di?erent diameters, and a frangible
disc clamped between-the adjacent ends of said
members and forming a. closure between said pas
sages, said ‘frangible disc being adapted to ‘be
broken by dropping an element down the hollow 65
tubing, whereby to render said openings com
municative
5. A testing apparatus for use in connection
with a hollow tubing, comprising a hollow elon
gated member bearing a. packer, said member
having a closure at its upper end and an inlet
and outlet opening respectively below and above
said packer, a hollow cylinder supported by the
hollow tubing for movement over the upper end
through the expansible packer. With the com: of said elongated member, packing means form
-
2,109,746
4
ing a ?uid tight seal between said outlet opening
and said hollow cylinder, but movable relative
to said opening tor rendering it communicative
with the interior of said cylinder, means form
ing a passageway between the interior of said cyl
inder and said hollow tubing, and closure means
in said passageway which is adapted to be broken
by dropping an element through the hollow tub
ing.
_
of said intermediate position for rendering said
?uid outlet communicative with said ?uid receiv
ing chamber, and means for yieldably supporting
said telescoping members in their normal relaé
tive positions.v
9. In a well testing apparatus, a pair of rela
tively axially‘ movable members, said members
being in. telescopic relation and having ?uid
chambers associated therewith, one of said
chambers having a ?uid outlet for rendering said
-
6. An apparatus of the character described
10 comprising
an elongated member bearing an ex
pansible well packer and having a passage there
in closed at its upper end with inlet openings
leading thereinto below said packer and outlet
15 openings leading therefrom above said packer, a
‘chamber communicative with the other ?uid
chamber upon axial movement of one of said
plunger head carried by said elongated member
for effecting an expansion of said packer upon
being moved relative thereto, said packer having
a ?uid by-pass therethrough, a yieldable sealing
telescopic members with respect to the other,
packing means completely surrounding one of
said telescoping members in sealing relation
therewith and at‘all times forming an endless
?uid tight seal completely around the other of
said telescopic members, whereby to interrupt
the path from the ?uid outlet into the said ?uid
receiving chamber at all times until the telescop 20
ring interposed between the well packer and ' ing members are moved relatively in a telescopic
plunger head which is adapted to be compressed direction a su?icient distance to change the rela
therebetween to form a ?uid tight seal of the tive positions of the ?uid outlet and the packing
?uid by-pass, a hollow cylinder supported for means sufficiently to render said ?uid outlet com
movement over the upper end of said elongated municative with said ?uid receiving chamber, 25
member and having packing means for sliding and means forming a second ?uid tight seal on
engagement therewith, said packing means be- » one side of said telescoping valve members which
ing normally positioned over said outlet openings normally interrupts the passage of the ?uid from
to form a ?uid tight seal between said outlet the well, but which is adapted to be broken for
openings and said cylinder, but movable relative permitting the passage of said ?uid.
30
to said outlet openings with the hollow cylinder
10. In a well testing apparatus, a pair of rela
for rendering said openings communicative with tively axially movable members, said members
said cylinder.
‘
being in telescopic relation and having ?uid
7. In a well testing apparatus, a pair of rela
chambers associated therewith, one of said cham
tively axially movable members, said members bers having a ?uid outlet for rendering said 35
being in telescopic relation and having ?uid chamber communicative with the other ?uid
chambers associated therewith, one of said cham
chamber upon axial movement of one of said tel
bers having a ?uid outlet for rendering said escopic members with respect to the other, pack
chamber directly and-openly communicative with ing means completely‘surrounding one of said
the other ?uid chamber ,upon axial movement of - telescoping members in sealing relation there 40'
one of said telescopic members with respect to the with and at all times forming an endless ?uid
other, packing means completely surrounding ' tight ~seal completely'around the other of said
one of said telescoping members in sealing rela
telescopic members, whereby to interrupt the
tion therewith and at all times forming an end
less ?uid tight seal completely around the other
of said telescopic members, said packing means
45 being outside of said‘ ?uid receiving chamber
and normally disposed between said chamber and
said ?uid outlet, whereby to interrupt the path
from the ?uid outlet into said ?uid receiving
chamber at all times until the telescoping memé
50 bers are moved relatively in a telescopic direction
_a su?icient distance to position said packing
means out of said intermediate position for ren
65
dering said ?uid outlet communicative with said
?uid receiving chamber.
8. In awell testing_apparatus, a pair of rela
tively axially movable members, said members
being» in telescopic relation and having ?uid
chambers associated therewith, one of said cham
bers having a ?uid outlet for ‘rendering said
60 ‘chamber directly and openly communicative with
the other ?uid chamber upon axial movement
ofone of said telescopic members with respect
to the \ other, packing means completely sur
rounding one of said telescoping members in seal
ing relation therewith and at all times forming
an endless ?uid tight seal completely around the
other of, said telescopic members, said packing
means being outside of said chamber and nor
mally disposed intermediate said chamber and
70 vsaid outlet, whereby to interrupt the path from
the ?uid outlet into said ?uid receiving chamber
at all times until the telescoping members are
moved relatively in a telescopic direction a su?i
75.
cient distance to position said packing means out
a
path from the ?uid outlet into the said ?uid re
ceiving chamber at all times until the telescop 45
ing members are moved relatively in a telescopic
direction a su?icient distance to change the rel
ative positions of the ?uid outlet and the pack
ing means su?lciently'to render said ?uid outlet
communicative with said ?uid receiving cham
ber, a packer adapted for engagement with the
walls of a well and having a ?uid by-pass there
through for by-passing ?uid upon moving the ‘
entire apparatus within a well, a member carried
by one of said telescoping members for seating
said packer, and means adapted to be com
pressed between sald member and said packer for
closing said by-pass.
)
11. In a well testing apparatus, a pair of rel
atively axially movable members, said members 60
being in telescopic relation and having'?uid a
chambers associated therewith, one of said cham
bers having a ?uid outlet- for rendering said
chamber communicative with the other ?uid
chamber upon axial movement of one of ‘said 65
telescopic members with respect to other, pack
ing means completely surrounding one of said
telescoping members in sealing relation there
with and at all times forming an endless ?uid
tight seal completely around the other of‘ said
telescopic members, whereby to interrupt the
path from‘ the ?uid outlet into said ?uid receiv
ing chamber at all times until the telescoping
members are moved relatively in a telescopic di
rection a sumcient distance to change the relative
15
2,109,745
5
positions of the ?uid outlet and the packing
a spring contained in said cylinder intermediate
means suf?ciently to render said ?uid outlet com
the plunger and the telescoping member for nor
.municative with said ?uid receiving chamber, a mally retaining the telescoping member in a re
packer carried by one of said telescoping mem
ceded position.
bers and adapted for engagement with the walls
14. A deep well testing apparatus comprising
of a wellfsa-id packer having a ?uid passage a pair of telescoping members having longitu
therethrough for by-passing ?uid upon moving
dinal ?uid passages therein, one of said members
the entire apparatus within a well, and cooper
bearing a well packer and adapted to be station
ative inter?tting valve means provided on said
10 packer andon one of said telescoping members arily supported within a well, the other of said
for positively preventing the passage of ?uid members being adapted to be supported for axial 10
from the zone above the packer into the zone movement with respect to said ?rst member,
means forming a fluid inlet and a ?uid outlet
therebelow, when said packer is seated and dur
leading to and from the ?uid passage provided
ing the actuation of said telescoping valve mem
in the elongated packer bearing member, said
15 bers.
?uid inlet being communicative with the well 15
12. A well testing apparatus comprising an and
?uid outlet being adapted to discharge
elongated member bearing a packer adapted to into said
the ?uid passage in the other of said tele
engage the walls of a well, said elongated mem
ber having a ?uid passage hermetically closed at scoping members upon relative axial movement
its upper end with an inlet‘opening leading into of said members and common packing means
said passage below said packer and a discharge forming endless circumferential ?uid tight seals 20
with both of said telescoping members atone
outlet leading from said passage above said side
of said ?uid outlet, and intermediate said
packer, a valve member telescoping over the elon
outlet
the ?uid passage into which it is
gated member and supported for axial movement adaptedand
to discharge, whereby to normally pre
with respect thereto, means forming a ?uid re
vent the passage ofv ?uid from one telescoping 25
ceiving chamber connected for coaxial move
member to the other, said packing means being
ment with said telescoping valve member and moved
out ‘of said intermediate position, and
into which said outlet is adapted to discharge said discharge
opening moved into direct open
upon axial movement of said receiving chamber
80 and valve member with respect to said elongated communication with the ?uid passage in said
movable telescoping member, upon moving said 30
member, packing means completely surrounding member
axially with respect to said telescoping
said elongated member in sealing relation there
member.
>
with and adapted at all times to form an endless
15.
'A
well
testing
apparatus comprising rela
?uid tight seal with said telescoping valve mem
tively
movable
members
?uid chambers
ber completely around the same, said packing therein, valve means for having
rendering
said cham 35
means beingv normally positioned intermediate
bers communicative upon relative movement of
the discharge outlet and the ?uid receiving said
members, a well packer supported on one
chamber, whereby to interrupt the path from the of said
members and having a ?uid passage
?uid outlet into said ?uid receiving chamber, therethrough for facilitating the movement of
said telescoping valve and chamber members be
the entire apparatus within a well, and coopera
ing capable of movement in an axial direction
a su?‘lcient distance to change the relative posi
tions of the ?uid outlet and said packing means
said relatively movable members for positively
elongated member bearing a packer adapted to
engage the walls of a-well, said elongated member
well tools, comprising a pair of clamping mem
bers having ?uid chambers therein, and a fran
tive valve means on said packer and on one of
40
preventing the passage of ?uid from the zone
su?iciently to render said packing means out of above
the packer into the zone below the packer,
45 its intermediate position and said discharge out
when said packer is seated and during the opera 45
let communicative with said ?uid receiving cham- . tion of said ?rst valve means.
ber.
16. A sealing device for use in connection with
13. A well testingapparatus comprising an
having a ?uid passage ‘ therein with an inlet
opening below said packer and an outlet opening
above said packer, ,a member telescoping over
the elongated member and supported for axial
55 movement with respect thereto, means forming
a ?uid receiving chamber in association with
said telescoping member into which said outlet
is adapted to discharge upon axial movement of
said telescoping member with respect to said
elongated member, packing means completely
surrounding said elongated member in sealing
relation therewith and adapted at all times to
form an endless ?uid tight seal with said tele
scoping member completely around the same,
85 whereby to interrupt the path from the ?uid
outlet into said ?uid receiving chamber at all
times until the telescoping member is moved in
an. axial direction a sufficient distance to change
the relative positions of the ?uid outlet and said
packing means sumciently to render said outlet
communicative with said ?uid receiving cham
ber, a cylinder connected with the telescoping‘
member and surrounding a portion of said elon
gated member, a cooperative plunger provided on
"5. said elongated member within said cylinder, and
gible element held in clamped relation between 50
said clamping members, the chambers in said
clamping members having different cross sec
tional areas immediately adjacent the opposite
sides of said frangible element, whereby to render
said frangible element capable of withstanding 55
a greater force against one of its sides than
against the other oi,’ its sides.
17. In combination with a well tool, means
forming a passage for ?uid, means forming a
frangible obstruction'in said ?uid passage, the
cross section area of said passage being diifer
ent immediately adjacent the opposite sides of
the frangible obstruction, whereby to render said
obstruction capable of withstanding a greater
force against one of its sides than against the 65
other of its sides.
'
18. A well testing apparatus comprising an
lelongatedvmember bearing a packer. adapted to
engage the walls of a well, said elongated member
having a ?uid ‘passage .closed at its upper end, 70
with an inlet leading thereinto below said packer
and a discharge opening leading therefrom above
said packer, a valve member telescoping over the
elongated member 'and supported for axial move
‘ment with respect thereto, a ?uid receiving 75
6
2,109,745
chamber connected with said telescoping valve
member for telescoping movement over said elon
gated member, annular packing means carried
by said valve member and normally positioned to
form a circumferential ?uid tight seal with said
elongated member‘ at a point intermediate said
discharge opening and said fluid receiving cham
ber for interrupting the passage of ?uid into the
chamber, said packing means being moved out of
said intermediate position and the discharge
opening moved into direct open communication
with the ?uid receiving chamber upon moving
said valve member and said chamber axially of
said elongated member.
19. A well testing apparatus comprising an
15
elongated member bearing a packer adapted to
10
engage the walls of a well and stationarily sup
port the elongated member therein, said elon
gated member having a ?uid passage closed at
20
its upper end, with an inlet leading thereinto be
low said packer and a discharge opening leading
therefrom above the packer, said packerhaving a
?uid by-pass therethrough for facilitating the
movement of the apparatus through a ?uid ?lled
well, a member carried by said elongated member
for seating said packer and closing said ?uid by
pass to render the zones on opposite sides'of said
packer non-communicative when the packer is
seated, a valve member telescoping over the elon
gated member and supported for axial movement
with respect thereto, a ?uid receiving chamber
connected with said telescoping valve member
for telescoping movement over said elongated
member, annular packing means carried by said
10’
valve member and normally positioned to form a
circumferential ?uid tight seal with said elon
gated member at a point intermediate said dis
charge opening and said ?uid receiving chamber,
for interrupting the passage of ?uid into the
chamber, said packing being moved out of said
intermediate position and the discharge opening
moved into direct open-communication with said
15.
?uid receiving chamber, upon moving said valve 20
member and said ?uid receiving chamber axially
of said elongated member.
LANDES H. HAYWARD.
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