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Патент USA US3032128

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May 1, 1952
J. R. JACKSON ET AL
3,032,118
APPARATUS FORICONDUCTING WASHING OPERATIONS IN A WELL
Filed Oct. 11. 1957
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INVENTORS
J. R. JACKSON
J. H. MARSEE
F/G. /.
FIG. 2.
BY
MTM
ATTO NEYS.
May 1, 1962
J. R. JACKSON ETAL
3,032,118
APPARATUS FOR CONDUCTING WASHING OPERATIONS IN A WELL
Filed Oct. 11. 1957
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INVENTORS
J.R.JACKSON
BY
37 ,______4 3a
3s
J. H. MARSEE
United States Patent O??ce
1
3,032,118
Patented May 1, 1962
2
where it is necessary to remove sand, cement, debris, ?sh,
3,032,118
including tubing, and the like, from said well bore hole.
APPARATUS FOR CGNDUCTING WASHING
OPERATIONS IN A ‘WELL
James R. Jackson, Fort Stockton, Tex., and Jack H.
The apparatus comprises, as one part, a string of an in~
ternal ?ush joint tubing of ?xed length carried in the
lower end of the ?shing string or other tubing to be low
Marsee, Tulsa, Okla, assignors to Phillips Petroleum
ered into the well bore hole for the purpose of recover
Company, a corporation of Delaware
ing ?sh and conducting washing operations. The appara
Filed Oct. 11, 1957, Ser. No. 689,544
12 Claims. {CL 166-243)
tus of this invention also comprises, as another part, an
internal washing tool of small diameter wash tubing or
This invention relates to apparatus for conducting oper 10 macaroni tubing of ?xed length having a sealing means
ations in a well. In one of its aspects, this invention
attached to one end and adapted to be lowered into said
relates to apparatus for conducting washing-over opera
well bore hole by Wire through the ?shing string into the
tions in a well. In another of its aspects, this invention
internal ?ush tubing carried in the lower end of said ?sh
relates to apparatus for conducting internal Washing opera
ing string to be slidably engaged with said internal ?ush
tions in a well. In another of its aspects, this invention
tubing and to be extended telescopically into the well bore
relates to ‘apparatus for conducting ?shing operations in
hole below the lowermost end of the ?shing string. The
a well.
diameter of the sealing means attached to the outside of
The usual practice for the recovery of drill pipe which
the ?xed length of the macaroni wash tubing has a diam
has become stuck or lodged in the drill hole comprises
eter less than the internal diameter of the ?shing string
establishing the free point by the use of a free point in
so that little frictional resistance is encountered in loWer~
dicator and then backing off on the drill pipe at the in
stant a string shot is set oil? adjacent the nearest drill
ing the macaroni wash tubing through the ?shing string.
was otherwise freed in the wash-over process.
ternal ?ush tubing concentrically within the ?shing string.
The external diameter of the internal ?ush tubing is less
pipe connection above the free point to thereby free the
than the internal diameter of the ?shing string. The rela
drill pipe above the point at which it is stuck in the drill
tionship of the diameter of the sealing means attached to
hole. The freed drill pipe is withdrawn and wash pipe 25 the macaroni wash tubing and the internal diameter of
is then run into the hole and the stuck drill pipe washed
the internal ?ush tubing is such as to effect a seal in
over in an effort to free it. Frequently, the wash-over
the annular space between the external surface of the
process results in the bore of the stuck drill pipe becoming
macaroni wash tubing and the internal surface of the in
plugged with debris which prevents running another string
ternal flush tubing. A special sub attached to the lower
shot for loosening that portion of the stuck drill pipe which 30 end of the ?shing string is employed to arrange the in
Some
times, the obstruction in the bore of the drill pipe can be
removed by running a spud bar on the shooting line. Also,
the bore of the drill pipe and collars can sometimes be
cleaned out by running in a hydrostatic bailer on the shoot
The apparatus of the invention can be utilized for con—
ducting ?shing operations in a Well bore hole, including
washing operations, such as internal washing of ?sh, in
one trip of the ?shing string into the well bore hole. In
ing line. The more, positive method of removing the ob
conducting these operations, a ?shing string containing
struction from the bore of the drill pipe comprises run
a length of internal ?ush tubing in its lower end and
ning a string of small diameter pipe or macaroni tubing
carrying the necessary ?shing tools and wash-over tools
inside the drill pipe and then washing the obstruction out
is run into the Well bore hole into contact with the ?sh.
of the drill string bore. This latter method is very time 4-0 Washing over of the ?sh is accomplished in the normal
consuming and is also very risky, particularly Where the
manner by circulating washing fluid into the well bore
well is very deep, since the drill pipe may have become
hole through a ?shing string around the ?sh, and out of
stuck during the time the small diameter pipe is being run
the well bore hole through the annular space existing be
into the well and because the small diameter pipe is struc
45 tween the ?shing string and the Walls of the well bore
turally weak and prone to loss in the well.
An object of this invention is to provide an improved
hole. When wash over operations are completed, the
wash over tools are removed and the apparatus of the
present invention is installed on the lower end of the ?sh—
apparatus for recovering and removing pipe, tubing or the
like from a well bore hole.
Another object of this invention is to provide an im
proved apparatus for conducting internal washing opera
tions in a well bore hole and subsequent recovery of the
?sh without removing the ?shing tools from the ?shing
string.
Another object of this invention is to provide an im
proved apparatus for telescopically extending tubing in a
50
ing string so that internal washing of the ?sh is accom
plished by running an internal Washing tool into the ?sh
ing string on a Wire line free from frictional contact with
the inner wall of said ?shing string. The internal wash—
ing tool, comprising a ?xed length of small diameter or
macaroni wash tubing having a sealing means on its up
55 permost end, slidably engages the internal. ?ush tubing in
a ?uid sealing relationship and is telescopically extended
through the lowermost end of the ?shing string into the
?sh by regulation of the pressure of the circulating wash
proved apparatus for readily running a washing means
ing ?uid. Upon effecting the internal removal of debris,
into a Well bore hole on a wire line without extended fric
60 sand, cement, and the like, from within the ?sh, as de
tional contact of said washing means with tubing in said
termined by the pressure maintained on the circulating
well bore hole.
washing fluid, the internal washing tool is removed from
Other aspects, objects and the advantages of the inven
the well bore hole by means of the wire line. Then
tion are apparent from a consideration of the accompany
without removing the ?shing string from. the Well bore,
ing description, the drawings and the appended claims.
65 it is joined to the ?sh, as by screwing together, a string
According to the present invention, there is provided an
shot is lowered into the ?sh to a point opposite the lower
apparatus for conducting operations in a well bore hole
most point of the wash over operation and exploded op
well bore hole.
Another object of this invention is to provide an im
sesame
3
4
posite a threaded connection so that the threaded connec
tion will be loosened for subsequent unscrewing and re
ing 11 of internal washing tool 10 and thence through the
moval of part of the ?sh by withdrawing the ?shing string
lower end 12 of wash tubing 11. It is seen that internal
?ush tubing 18 functions as an elongated internal sealing
tool of the invention removed from the well bore hole.
FIGURE 2 is a sectional view of the lowermost portion
of a ?shing string or other tubing containing the internal
member with packers 16 in sealing relation therewith.
As the internal washing operation within ?sh 31 is con
ducted, internal washing tool 10 is lowered into the well
bore hole in order to keep the lower open end 12 of in
ternal Washing tool 1% adjacent the debris to be removed
from within ?sh 31. In this manner, the internal wall
of internal ?ush tubing 18 comprises an elongated sealing
surface when multiple packers 16 are contacted there
?ush tubing and special sub attached thereto. FIGURE
3 is a sectional view showing the operation of the inven
with so that the ?ow of wash ?uid is con?ned to the
internal passages of ?sh 31. Wash ?uid is circulated
tion in a Well bore hole. FIGURE 4 is a sectional view
showing how a wash-over tool can be connected to the
special sub of FIGURE 3. FIGURE 5 is a sectional View
showing how an overshot tool and a wash-over tool can
through wash tool 13 down inside ?sh 31 and the wash
?uid carrying debris is returned outside the wash tubing
11 and is then brought to the surface of the ground
through the annular space between drill pipe 28 and sur
face of the well bore hole 32. It is impossible for internal
washing tool 10 to be dropped through the lower end
from the well bore. This operation is repeated as neces
sary until all of the ?sh has been removed from the
well bore.
The invention is further illustrated by the accompany
ing drawings. FIGURE 1 shows the internal washing
be connected to the special sub of FIGURE 3.
Referring to FIGURE 1, internal wishing tool 10
comprises a ?xed length of small diameter Wash tubing
11 which is a tubular member having a lower open end
12 and an upper end 13 closed by a sucker rod con
nector 14. Lateral openings 15 are provided through
the wall or” wash tubing 11 adjacent the closed end 13
to permit the ?ow of ?uid into wash ‘tubing 11 at the
top thereof. Multiple packers 1e are mounted on tubing
11 adjacent closed end 13 and below lateral openings
15. A wire line 17 is attached to internal washing tool
of special sub 21 because the internal diameter of bore
26 in special sub 21 is less than the external diameter
of multiple packers 16.
The speci?c length of small diameter washtubing 11
making up internal washing tool 10 is determined by the
length of stuck tubing to be cleaned out. Ordinarily,
the length of internal washing tool 10 and internal ?ush
tubing 18 is in the range of about 20 to 100 feet. The
lengths of internal washing tool 10 and internal ?ush
tubing 18 are approximately equal in the usual operation;
~10 by means of sucker rod connector 14.
Referring to FIGURE 2, a string of internal ?ush 30 however, these lengths may be considerably different
and either may be longer or shorter than the other, de
joint tubing 18, which is a tubular member having a
pending upon the distance of the top of ?sh 31 to the
diameter somewhat smaller than the diameter of drill
top of the debris within ?sh 31 and the depth of the
pipe 19, is mounted concentrically within drill pipe 19.
debris within ?sh 31. The length of small diameter Wash
Theconcentric mounting of internal ?ush tubing 18 in
drill pipe 19 is secured by ?rst attaching the lower end 29 I tubing 11 in internal Washing tool 10 is limited by the
of internal ?ush tubing 18 into a special sub 21 by means
of screw threads 22 and then attaching special sub 21
to drill pipe 19 at pipe joint 23 by means of screw
threads 24. Weld 25 is placed between the outside of
internal ?ush tubing 18 and the internal wall of special
sub 21 in order to rigidly ?x internal ?ush tubing 18
into special sub 21. Special sub 21 has a centrally dis
posed circular bore 26 of a diameter which is less than
the internal diameter of internal ?ush tubing 18 but
greater than the external diameter of small diameter
Wash tubing 11. Upper end 27 of internal ?ush tubing
18 is outwardly ?ared to form a funnel shape.
In FIGURE 3, the cooperation betweeninternal Wash
ing tool 10 with internal ?ush tubing 18 carried in the
lower end of ?shing string 19 is shown in a well bore
hole. As shown in FIGURE 3, additional drill pipe 28
has been attached to the upper end of drill pipe 19 by
means of pipe joint 29. Special sub 21 terminates in
threaded portion 34 adapted to engage threads 35 in
?sh 31. Upon completion of the internal washing oper
ation, threaded portions 34 and 35 will be screwed to
gether by rotation of pipe 28 to ‘aid in the ultimate re
covery of the ?sh 31. It is to be understood that threaded
breaking strength. of the wire line used to lower the
internal washing tool into the Well.
FIGURE 4 illustrates how a wash-over tool or pipe
36 can be ai?xed to the special sub 21 of FIGURE 3,
for example, by means of welding. The wash-over tool
36 has an inner. diameter larger than the outer diameter
of ?sh 31 and, as shown in the drawing, wash-over tool
36 surrounds the upper portion of ?sh 31. The lower
end of wash-over tool 36 can be provided with a plu
rality of circumferentially spaced cutting edges 38. To
wash-over a ?sh, the washing ?uid is pumped down drill
pipe 28, through internal ?ush tubing 18, bore 26 of
special sub 21, and down through annulus 37 between
?sh 31 and wash-over tool 36, the drill pipe being ro
tated when necessary to free the ?sh from debris, sand,
and the like, which tend to stick the ?sh. After the
washing, operations, the wash tool 11 can be lowered
to washout the debris vfrom the inside of the ?sh. Fol
lowing the internal washing of ?sh 31, the drill pipe
. can be lowered so as to permit the threads 34 of special
sub 21 to engage the threads 35 of the ?sh, thereby allow
ing the removal of the ?sh from the well here.
A conventional overshot can also be connected to the
threaded portion 34 of special sub 21. This is illustrated
portion 34 can be attached to any conventional overshot
in FIGURE 5 where conventional overshot 39 is affixed
with unobstructed central passageway so that ?sh 31 can 60
in this manner. This overshot 39 comprises an upper
be grasped from the outside if such is necessary. How
coupling 41 connected to threaded portion 34 of special
ever, for purposes of illustration, the cooperating threads
sub 2.1, and a tubing 42 connected by threaded portion
34 and 35 only are illustrated since no other attachment
45
of coupling 41. The lower end of the overshot tool
means will be required in many situations arising in
tubing 42 is connected by threads 50 to wash-over tool
oil well drilling operations.
36, which is like that of FIGURE 4. Overshot tubing
For conducting internal washing within ?sh 31, as
42
is internally provided with an annular slip retaining
shown in FIGURE 3, internal washing tool It} is lowered
ring
43. A compression spring 44 is interposed between
by means of Wire line 17 through drill pipe 23 into in
the upper surface of retaining ring 43 and the upper end
ternal ?ush tubing 18, the funnel shaped portion 27
of bore 55 within coupling 41. Conventional slip 46
serving to guide washing tool 18 into internal ?ush tubing
is disposed within overshot tubing 42 and held in place
13. A fluid seal is readily effected between multiple
by slip retaining ring 43. Slip retaining ring 43 engages
packers 16 and the internal wall of internal ?ush tubing
slips 46 and under the in?uence of spring 44 forces slips
18 through means of the ?ared end 27 so that the only
46 downward to the catch position. When it is desired to
path of ?ow for wash ?uid from drill pipe 28 is through
later'alopenings 15 into the passageway within wash tub 75 wash-over ?sh 31, washing?uid is pumped down through
3,032,118
5
6
drill string 2.8 as before, through overshot tool 39 and
annulus 37 between wash-over tool 36 and ?sh 31. After
washing over ?sh 31, washing tube 11 of this invention
is lowered into the well, and the internal washing of
?sh 31 is accomplished. After washing ?sh 31, it can
While the apparatus of this invention has been de
scribed for use in oil Wells, this apparatus can be used
in any well bore hole which is made in the earth and
e removed by ?rst lowering the entire tool so that the
top of ?sh 31 forces slips 46 upward and outward to
allow a ?sh to enter the slip. Subsequent lifting of the
can be used in other wells, such as brine, gas, or water
wells.
Reasonable variation and modi?cation are possible with
where it is necessary to remove ?sh, debris, sand and
the like therefrom. Thus, the apparatus of this invention
overshot causes slips 46 to grasp the exterior of ?sh 31
so that it can be removed along with the drill pipe.
in the scope of the foregoing disclosure, drawing and
the appended claims to the invention, the essence of
which is that there have been provided apparatus for
To illustrate the operation of the apparatus of this
invention, drill collars have become stuck at a depth of
11,833 feet as established by the use of a free-point in
dicator.
conducting operations in a well bore hole, including
washing-over and internal washing operations, said ap
paratus comprising (1) an internal washing tool having
The drill pipe was backed off at the nearest
connection above the free-point and withdrawn from 15 a ?xed length of small diameter or macaroni wash tubing
the well bore hole. After washing-over operations had
with a sealing member attached to its uppermost end
been completed, a ?shing string containing 90 feet of
and (2) a ?xed length of internal ?ush joint tubing car
internal ?ush joint tubing 18 having a 2 inch internal
ried in the lowermost end of a ?shing string to be run
diameter attached to its lower end by special sub 21
into the well bore hole, and said internal washing tool
was run into the well bore hole into contact with the
being slidably engaged in a ?uid sealing relationship with
stuck pipe. Pump pressure was then applied and the
said internal ?ush joint tubing.
resulting pressure increase established the fact that the
We claim:
connections were properly ?tted together. The drill string
1. An apparatus for conducting washing operations in a
was then raised two and one half inches. Observation of
well bore hole comprising, in combination, a string of
the wash ?uid circulation pressure established the fact that 25 tubing adapted to be lowered into said well bore 'hole, a
there could be no restriction to ?uid flow, while at the same
special sub attached to the lower end of said string of tub
ing, a ?rst tubular member attached at its lower end to
said string of tubing by said special sub and mounted con
centrically within said string of tubing, a second tubular
operation. The internal washing tool 10, containing 90 30 member of a diameter less than the diameter of said ?rst
feet of small diameter wash tubing 11 having an external
tubular member, said second tubular member having an
diameter of 15/16 inch, was run into the ?shing string on
opening at each end, an external sealing means attached to
a wire line 17. Small diameter wash tubing 11 was
the upper end of said second tubular member, said ex
lowered through internal ?ush joint tubing 18 and out
ternal sealing means having a diameter less than the di
of the bottom of the ?shing string into the collars to
ameter of said string of tubing and adapted to slidably
be cleaned out. When contact was made with the ob—
engage the internal wall of said ?rst tubular member in
struction in the stuck collars, the pressure on the wash
sealing relations therewith, a wash-over member attached
?uid was built up to approximately 300 psig. and the
to the lower end of said string of tubing by said special
obstruction washed away. As the obstruction in the stuck
sub, an attaching means on the upper end of said second
drill collars was removed, small diameter wash tubing 11
tubular member, and a wire line connected to said second
was lowered further into the ?sh by wire line 17 in order
tubular member by said attaching means for lowering said
to contact the remaining portion of the obstruction. Thus,
second tubular member through said string of tubing to
the obstruction in these stuck drill collars was removed
a depth such that a substantial portion of said second
very e?iciently and safely in approximately four hours,
tubular member is below said special sub attached to the
time the string had not been raised sufficiently to complete
ly pad the connections. FIGURE 3 illustrates the relative
position of special sub 21 and ?sh 31 at this stage of the
whereas, if the internal washing tool of this invention 45 lower end of said string of tubing.
had not been available, it would have required approxi—
2. An apparatus for conducting washing operations in
mately forty-eight hours to run a small diameter or
a well bore hole comprising, in combination, a string of
macaroni tubing into the well bore hole from the surface.
tubing adapted to be lowered into said well bore hole, a
During this time, the stuck pipe would have become even
special sub attached to the lower end of said string of tub
more ?rmly stuck and there would be considerable danger
ing, a ?rst tubular member attached at its lower end to said
in a failure developing in the approximately 11,000 feet
string of tubing by said special sub and mounted concen
of small diameter tubing which would be required to
trically within said string of tubing, a second tubular
reach the obstruction in the stuck pipe.
member of a diameter less than the diameter of said ?rst
While the invention has been described in such a man
tubular member open at each end, an external sealing
ner as to require that wash over operations be completed 55 means attached to the upper end of said second tubular
before internal washing is begun, it will be apparent to
member of a diameter less than the diameter of said string
those skilled in the art that it ‘would also be possible
to conduct wash over operations in conjunction with the
of tubing and adapted to slidably engage the internal wall
of said ?rst tubular member in sealing relation therewith,
internal washing operation in such a manner as to re
an attaching means on the upper end of said second tubu
quire only one trip into the Well bore with ?shing tools. 60 lar member, and a wire line connected to said second tubu
To do this it would only be necessary to install a wash
lar member by said attaching means for lowering said
over pipe of desired length on the lower end of special
second tubular member down said string of tubing and
sub 21, for example, as shown in FIGURE 4 or FIG
down said ?rst tubular member while in sliding and seal
URE 5. In such a case, wash over operations would be
completed ?rst. Following this, and without removing
the drill pipe and ?shing tools, the internal washing op
ing relation therewith to a depth such that a substantial
portion of said second tubular member is below said spe
cial sub attached to the lower end of said string of tubing.
eration could be carried out and the ?sh removed as
described above.
Another modi?cation that would be readily apparent
is the adoption of different sealing means to effect a
a well bore hole comprising, in combination, a string of
3. An apparatus for conducting washing operations in
- tubing adapted to be lowered into said well bore hole, a
special sub attached to the lower end of said string of tub
ing, a tubular member attached at its lower end to said
seal between wash tubing 11 and internal ?ush tubing
l8. As a speci?c example, sealing rings could be installed
string of tubing by said special sub and mounted concen
trically within said string of tubing, and a wash-over
means attached to the lower end of said string of tubing
in special sub 21 in such a manner that internal ?ush
tubing 13 will retain them in position when said tubing
is screwed into threads 22.
75
by said special sub.
‘ i
'
'
3,082,118
7
4. Apparatus comprising a string of tubing which is
lowered into a well bore hole for conducting operations
therein, an internal sealing means mounted in the lower
end of said string of tubing, a washing tool adapted to be
lowered into said string of tubing in place in said well 01
bore hole on a wire line and moved vertically below the
lower end of said string of tubing by movement of said
Wire line, said washing tool comprising a tubular member
of a diameter less than the diameter of said internal seal
ing means in the lower end of said string of tubing, said
tubular member having openings at each end thereof, an
external sealing means on the upper end of said tubular
member adapted to engage in sealing relation with said
internal sealing means in the lower end of said string of
tubing during telescopic movement of said tubular mem
ber beiow the lower end of said string of tubing, said ex
8
8. An apparatus for conducting operations in a Well
bore, comprising, in combination, a string of ?rst tubing
adapted to be lowered into said well bore, a second tub
ing of ?xed length concentrically mounted in the lower
end of said ?rst tubing and together therewith forming a
?rst annular space, said second tubing having an internal
?ush sealing surface and openings at both ends thereof, a
third tubing adapted to be concentrically suspended within
said ?rst and second tubings and longitudinally moveable
therein by means of a wire line, an external ‘annular seal
ing means exteriorly mounted on the upper end of said
third tubing and ‘adapted to come into sealing relation with
said sealing surface of said second tubing to seal the
upper end of the annular space between said second and
third tubings, and means connected to the lower end of
said ?rst tubing for sealing the lower end of said ?rst an
nular space, said last-mentioned means having a passage
ternal sealing means having a diameter less than the diam
therein communicating at its upper end with said second
eter of said string of tubing, and an attaching means on
tubing and communicating at its lower end with said well
the uper end of said tubular member for attaching said
20 bore below said ?rst tubing, said passage having a diam
tubularmernber to saidwire line.
5. Apparatus comprising a string of tubing which
is lowered into a well bore hole for conducting operations
therein, an internal sealing means mounted in the lower
end of said string of tubing, a washing tool adapted to be
eter smaller than the inner diameter of said second tubing
and larger than the outer diameter of said third tubing,
said third tubing adapted to pass through said passage to
an extent limited when said third tubing is in its lowermost
lowered into said string of tubing in place in said well
position solely by the contact of said annular sealing
bore hole on a wire line below the lower end of said string
means and said means attached to the lower end of said
of tubing, said washing tool comprising a tubular mem
ber of a diameter less than the diameter of said internal
sealing means in the lower end of said string of tubing,
said tubular member having lateral openings in its side
wall adjacent the upper end thereof and an open lower
end, an external sealing means located on said tubular
member adjacent the upper end thereof below said lateral
openings adapted to engage in sealing relation with said
internal sealing means in the lower end of said string of
tubing, said external sealing means having a diameter less
than the diameter of said string of tubing, and an attach
?rst tubing.
9, Apparatus according to claim 8 wherein a wash-over
tool is attached to said means connected to the lower end
of said ?rst tubing, said wash'over tool having a passage
therein in communication with said passage in said means
connected to the lower end of said ?rst tubing, said pas
sage in said wash-over tool having a diameter larger than
the external diameter of said third tubing to permit the
latter to pass therethrough.
10. Apparatus according to claim 8 wherein an over
shot tool is connected to said means connected to the lower
end of said ?rst tubing, and a wash-over tool is connected
ing means on the upper end of said tubular member for
to said overshot tool, said 'overshot and wash-over tools
attaching said tubular member to said wire line.
6. In a string of tubing which is lowered into a well Ill) having communicating passages therein communicating
with said passage in said means attached to the lower end
bore hole ‘for conducting operations therein, an internal
of said ?rst tubing with diameters larger than the outer
sealing means mounted concentrically within the lower
diameter of said third tubing to permit the latter to pass
end of said string of tubing, said internal sealing means
through said overshot and wash-over tools.
comprising a tubular body having an external diameter
11. Apparatus ‘according to claim 8 wherein said means
less than the internal diameter of said string of tubing,
connected to the lower end of said ?rst tubing has con
said body having an outwardly ?ared upper end, and
means on the lower end of said tubular body to attach said
internal sealing means to said string of tubing.
7. An apparatus for conducting operations in a well
bore, comprising, in combination, a string of ?rst tubing
adapted to be lowered into said well bore, a ?rst sealing
means mounted Within the lower end of said ?rst tubing
and de?rn'ng a ?rst passage with a diameter smaller than
the inner diameter of said ?rst tubing and in communi
cation therewith, said ?rst passage being substantially in
nected thereto wash-over means and ?sh-attaching means
both of which have passages therein to permit said third
tubing to pass therethrough.
12. An apparatus for conducting operations in a well
bore, comprising, in combination, a ?rst tubing depending
within said well bore, a ?rst sealing means mounted in the
lower end of said ?rst tubing and providing an annular
sealing surface de?ning a passage in communication with
said ?rst tubing, said passage having a diameter smaller
than the inner diameter of said ?rst tubing, a second tub
actual alignment with said ?rst tubing, a second tubing
ing depending within said ?rst tubing and extending
having openings in the upper and lower ends thereof and
through said passage with the lower end of said second
adapted to be suspended within said ?rst tubing and 1on
tubing terminating at a point below the lower end of said
gitudinally moveable therein by means of a wire line, said
?rst and second tubing adapted to form an annular space 60 ?rst tubing and said ?rst sealing means, said second tub
ing having an outer diameter smaller than the inner di
therebetween, said second tubing having an outer diameter
ameters of said ?rst tubing and said passage, said second
smaller than the inner diameters of said ?rst tubing and
tubing having an opening in the upper end thereof in com
said ?rst passage, a second sealing means mounted on the
munication with said ?rst tubing and an opening in the
exterior of said second tubing adjacent the upper end
thereof, said ?rst and second sealing means adapted to 65 lower end in communication with said well bore, a wire
line connected to the upper end of said second tubing and
come into sealing relation ‘and seal the lower end of said
adapted to raise and lower the same within said ?rst tub
annular space, and means attached to the lower end of
ing and said ?rst sealing means, a‘second sealing means
said ?rst tubing and having a second passage therein with
mounted on the exterior of the upper end of said second
a diameter larger than the outer diameter of said second
tubing and smaller than that of said ?rst passage, said 70 tubing and adapted to engage said sealing surface of said
?rst sealing means in sealing relationship, and shoulder
second tubing adapted to pass through said ?rst and second
means mounted in said ?rst tubing string adjacent the
passages to an extent limited when said second tubing is
lower end of said sealing surface and adapted to contact
in its lowermost position solely by the contact of said
said second sealing means and thereby together with said
second sealing means and said means attached to the lower
75 Wire line function as the sole means for limiting the extent
end of ‘said ?rst tubing.
3,032,118
10
said second tubing can ‘terminate below the lower end of
said ?rst tubing.
References Cited in the ?le of this patent
UNITED STATES PATENTS
403,751
1,625,674
2,166,715
Hart _________________ __ May 21, 1889
Newburn ____________ .... Apr. 19, 1927
Cavins ______________ __ July 18, 1939
5
2,212,491
2,366,547
2,671,642
2,726,724
Oak __________________ __ Jan. 2, 1945
Stokes ________________ __ Mar. 9, 1954
Wilhoit ______________ __ Dec. 13, 1955
2,782,860
2,783,844
2,935,130
Tausch et a1 ___________ __ Feb. 26, 1957
Kanady ______________ __ Mar. 5, 1957
Moore _________________ __ May 3, 1960
Appleby ____________ __ Aug. 27, 1940
UNITED STATES PATENT OFFICE
CERTIFICATE OF CORRECTION
Patent N00 3,032‘J 118
May 1.4‘. .1962
James R, Jackson et a1.
It is hereby certified that error appears in the above numbered pat
ent requiring correction and th
at the said Letters Patent should read as
corrected below.
Column 79
line 46»E after "said" insert ~--- tubular ~~
e
Signed and sealed this 28th day of August 1902,
(SEAL)
Attest:
ESTON G‘, JOHNSON
Attesting Officer
DAY’ ID L. LADD
Commissioner of Patents
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