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Патент USA US3020091

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Feb. 6, 1962
3,020,081
l.. c. PATTERSON
HYDRAULIC KICK BUMPER sUB
Filed April 28, 1958
3 Sheets-Sheet 1
62
Il!
86
INVENTOR.
WHAN/V â Mc MAN/GAI.
óf
Feb. 6, 1962
-
1_. c. PATTERSON
3,020,081
HYDRAULIC KICK BUMPER suB
23/
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INVENTOR.
WHA NN d; Mr MAN/GAL
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Pág. 2A.
'
by
Feb. 6, 1962
3,020,081
|_. c. PATTERSON
HYDRAULIC KICK BUMPER SUB
Filed April 28. 1958
5 Sheets-Sheet 3
25
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43
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INVENTOR.
WHA NN@ MC MAN/GAL
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3,020,681
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FIG. 2A is a longitudinal section of the upper portion
of the device in the telescoped or closed position;
FIG. 2B is a longitudinal section of the lower portion
of said device in said telescoped or closed position;
FIG. 3A isa longitudinal section of the upper portion
3,626,081
HYDRAULIC KÍCK BUMPER SUB
Lester C. Patterson, 201 A St., Taft, Calif.
inea Apr. 2s, 195s, ser. Navsnese
1s claims'. (ci. 29e-_ssi
of the device in the extended open position;
ment or apparatus and relates more particularly to fishing
.
‘
FlG. 3B is a view of the lower portion of the device
in the extended or Vopen position;
This invention relates generally to well drilling equip-`
tools and the like.
Patented Feb. _6, 1962
FIG. 4 is a side View of a circulation establishing tool;
'
and
While the invention has particular utility in connection
FIG. 5 is a diagrammatic view of a portion of an oil
with oil well drilling equipment, and is herein shown and 10
well with a fish therein and apparatus embodying the
present invention in a fishing position.
Referring first to FIGS. l and 5, there is disclosed a.
described in such connection, it is to be understood that
its utility is not conñned thereto.
ln oil well drilling operations equipment may be broken
or lost in a well, such equipment being, for example, drill
bumper sub, indicated generally at 10, embodying the
pipe, tool joints, drill collars, liners, tubing, or any other 15 present invention. The bumper sub comprises a mandrel
assembly 11 and a barrel assembly 12. The mandrel
assembly is connected to a suitable ñshing tool, here
shown as a rotary releasing socket 14 and it isy to be
type of fish.
While various types of equipment or devices have been
used to recover such fish various dimculties and/ or prob
lems are encountered therewith. As is well known, a
well being drilled or bored does not have perfectly straight
understood, of course, that other types of fishing 'tools
may be used in connection with the bumper sub 10. The
barrel assembly l2 is connected'tovthe lower pipe 15 of
side walls and a drill pipe or the like may become broken
a drill string or the like.
"
„
and the upper end lean against the wall in such a position
The mandrel assembly ill includes- a tubular body' 16
as to be extremely difficult to engage with fishing tools.
which is provided at its lower end with a tapered, ex
Not only must the fishing tool engage the fish but there
should be a pack off to insure circulating while lifting, 25 ternally threaded pin 17 which is adapted to be> thread
ably received within the usual internally threaded box 18
pulling, or jarring operations are carried on to recover
of the rotary releasing socket 14. The pin 17 is provided
the fish.
with an enlarged internally threaded portion 19 having a
It is, therefore, an object of the present invention »to
shoulder 2€) at the inner or upper end against which'ís
provide a fishing tool or device that will overcome the
30 received a peripheral portion of a shatterable plate 21 of
difficulties and problems referred to above.
Another object of the invention is to provide a fishing „. any suitable material such as, for example, cast iron or
plastic. Plate 21 is secured on the shoulder 20 by means
tool or piece of equipment that will swing outwardly into
of an externally threaded tubular nut 22 having peripheral
engagement with the well wall so as to facilitate the
notches 23 adapted to be engaged by a suitable tool for
picking up of the adjacent end of the `fish.
"
Still another object> of the invention is to provide a tool 35 turning same into said part 19 or out of same.
From the upper end of the tubular body 16 thereex
or piece of equipment of this character having means to i
tends a tubular shank 25 of substantially smaller diameter
utilize the pressure of drilling fluid to urge the fishing tool
than the diameter of the body 16. Since the` body 16
laterally toward or against the wall of the well while the
drill string with the fishing tool attached, is rotated to 40 and shank 25 of the mandrel are tubular, the mandrel as
a whole is, of course, tubular. At the lower end of the
pick up the fish.
4
shank 25 is a part 26, of greater diameter than the shank
A further object of the invention is to provide in appa
but of less diameter than the body, the lower .end of said
ratus of this character means for cutting off the discharge
part 2n joining the body 16 at the upper end thereof.
of drilling fluid which effects such lateral urging of the
tool.
'
i
i
45
A. still further object of the invention is to provide ap
paratus of this character wherein circulation of drilling >
fluid is established with the fish after the fishing tool
engages said fish.
p
Part 25 is provided with a plurality of annularly spaced
slots 9.7 ycomprising a group’of slots'and said slots 27
extend longitudinally downward from the upper end of
part 26. Each slot 27 is provided with an upper end por
tion 2S of greater'circumferential width than the lower
Another object of the invention is to provide apparatus 50 portion of the slot. The portion 28 of each slot extends
laterally and, as shown in the drawings, extends to the
of this character combining the fishing function with a
left. Spaced upwardly of the part 26 is a part 29 of sub
bumper sub.
4
stantially the same diameter as the part 26 and part 29 is
Another object of the invention is to provide apparatus
provided with a plurality of longitudinally extending slots .
of this character that is simple and sturdy in construc
tion, and edective and reliable in operation.
55 3i) comprising a second group of slots and vsaid slots 30
are open at both ends of the part 29. Each of the slots
Still another object of the invention is to provide ap
Si? is provided with a portion 31 at the lower end which
paratus of this character that is relatively inexpensive
to manufacture.
.
The characteristics and advantages of the invention
is of greater circumferential width than the upper portion
thereof. The portion 31 extends laterally to one side rela
are further suñiciently referred to in connection with the 60 tive to the slots 3d and is open at the'lower end, and as
shown, extends to the right. Between the upper portions
following detailed description of the accompanying draw
of the slots 2.7 are longitudinally extending fingers 32
ings which represent one embodiment. After consider
which are aligned longitudinally with the upper narrower
infr this example, skilled persons will understand that
portions of the slots 30'and‘ at the base of each of the
variations may be made without departing from the prin
lingers 32 is a shoulder 33 which extends toward the nar>~
ciples disclosed, and l contemplate the employment of any 65 rowcr portions of the respective slots 27. , 'Ihe part 29
structures, arrangements or modes of operation that are
has fingers 34 between the enlarged parts of the slots 30
properly within the -scope of the appended claims.
l
and said fingers are aligned with the narrower lower por
Referring to the drawings:
tions of the respective slots 27. At the upper ends of
FIG. l is a side View of apparatus embodying the pres 70 the fingers 34 are shoulders 35 which extend toward the
ent invention, said apparatus being in the telescoped or
narrower portions of the‘respective slots 30.
l
closed position;
'
An upper end portionl 38 of the shank'extends up~
3,020,081
3
4
wardly of the part 29 thereof, and a lock ring 39 is dis
posed on said upper end portion 38. The lock ring 39
is discharged, as indicated at 67, to force the releasing
socket 14 laterally. ln FIG. 5, there is shown a well
bore 63, the wall 69 of which is irregular. The upper
end 70 of a fish is shown leaning against the wall 69
rests on the upper end of the part 29 and is provided with
a Yplurality of depending lugs 40 which are received in
the upper ends of the respective slots 39 so that the
ring 39 is held against rotation on the shank. Above the
ring 39 the shank portion 38 is externally threaded for
reception of an internally threaded nut 41 which is
as often happens. The device 1l) and releasing socket 14
are shown in the normal substantially vertical position
but as the drill string is rotated and the Fluid 67 dis
charged, the device 1t) and releasing socket 14 are forced
the ring 39 and holds same against
outwardly and into engagement with the side wall 69
A packing nut 42 is also screwed
of
the well. Rotation of the drill string is continued
10
of the shank above the nut 41 and
and said string is gradually lowered until the guide shoe
reduced diameter depending sleeve
engages the upper end Vof the fish 70 which enters said
43 on which is disposed a rubber seal 44. The nut 42 is
shoe. With further lowering of the device, the upper
screwed tightly against the nut 41 and is locked against
end of the fish will pass up through the pack off rubber
rotation on the shank by means of Allen screws 45 or 15 74, FIG. l, and into a position within the bowl 75 of the
screwed down onto
upward movement.
onto the portion 3S
is provided with a
the like. Parts 26 and 29 are integral with the shank.
socket whcreat the slips 76 arc in a position to engage the
The barrel assembly 12 comprises a tubular barrel 50
upper end of the fish.
having a cylindrical interior chamber 51 in which the
The rotary releasing socket 14 is manufactured by the
mandrel shank and parts thereon are received when the
Shaffer Tool Works and is well-known in the art. How
device is telescoped. At the upper end of the barrel 50 20 ever, a brief description thereof Will be given of the
there is the usual flared box or socket 52 which is in
construction and operation thereof. The device includes
ternally threaded for reception of the externally threaded
a top sub 78 -which has the socket 18 at its upper end,
pin of an adjacent »part of the drill string, such as the
said top sub 78 being attached to the upper end of a tubu
pipe 15, FIG. 5. The socket 52 is connected with the
lar bowl 79 having a plurality of annular, interior, tapered
interior 51 of the barrel by means of an axial bore 53. 25 steps 8G. The guide shoe 65 is secured to the lower end
At the lower end said barrel is provided with a slightly
of said bowl and the. pack off rubber 74 is secured with~
ñaring internally threaded end portion 54 for threadable
in said guide shoe. Operahly disposed within the howl
reception of the externally threaded upper or inner end
is a cage 81 having a plurality of longitudinally extend
portion 55 of a drive sleeve 56 which has the same
ing openings in which are operably disposed the slips 76
external diameter as that of the barrel 50. At the upper 30 which have a plurality of exterior steps 82 cooperable
end of the portion 55, there is an annular end part S7
with the steps 80 of the bowl. Within the cage 81 are
which has a shoulder 58 at its free end against which
a plurality of bow springs 83.
the adjacent end of the lock ring 39 is adapted to abut
In the upper end portion of the bowl 79 is a cam 84
so as to limit extension of the mandrel assembly and
which is welded or otherwise secured in the howl. The
the barrel assembly. Within the drive sleeve 56 are a 35 upper end portion of the cage 8?. is rotatable within said
plurality of annularly spaced longitudinally extending
cam 84 and is provided at the upper end with a down
splines 60 of such width as to be readily received in the
wardly facing shoulder 8S having substantially the same
narrow portions of the slots 27 and 3u. The length of
configuration as the cam surface 86 of the cam 84. The
the splines is a little less than the distance between a
cam 84 is provided with an upwardly extending lug 87
shoulder 33 of the slots 27 and the adjacent end of a 40 and at one end of the shoulder 85 there is a downwardly
finger 34.
extending lug 88 adapted to ride on the cam surface 86,
Barrel 50 is provided with a tapped opening 60a there
»lug 87 riding on the shoulder S5.
through in which is disposed an orifice plug 61 which is
While the device 10 is still in the extended position,
externally threaded and screwed into the opening 60a,
the string, including the device 10 and releasing socket
the ends of said plug 61 being substantially flush with 45 14, is rotated to the left one or more turns. The bow
the interior and exterior surfaces of said barrel, said plug
springs 83 frictionally engage the end of the ñsh within
61 having a discharge or jet orifice 62 through which
said socket 14 and hold the cage against rotation as the
drilling fluid is discharged under conditions to be de
bowl 79 rotates. The cam arrangement above described,
scribed hereinafter.
effects lowering of the cage so that the wickers 90 of the
When it is desired to use the device for fishing, said 50 slips 76 engage the fish. A pull sets the slips on the steps
device is extended, the orifice 62 then being above the
80 of the bowl and on the fish so as to securely grip said
sealing element 44, as best shown in FIG. 3A. When
fish.
the mandrel and barrel assemblies are in such an extended
The device 10 is then telescoped, this being effected
position, the splines 60 are disposed in the upper nar~
by lowering of the string still further so that the barrel
rower portions of the slots 30 and rotation of the barrel 55 assembly 12 will telescope on the mandrel shank until
in the usual manner and direction will cause rotation of
the lower ends of the splines 60 of said barrel assembly
the mandrel and the fishing tool 14 or the like connected
engage the upper ends of the fingers 32 of the mandrel
to the lower end of said mandrel. As the drilling string
assembly.
is rotated and elîects rotation of the barrel and mandrel
As the barrel unit is rotated to move the splines toward
assemblies, and the fishing tool, drilling fluid is pumped 60 the right, as shown in the drawing, the upper end por~
down through the drill string. This fluid is prevented
ltions of said splines will enter the widened part 31 of the
from flowing downwardly beyond the plate 21 in the
upper slots 30 and when said splines engage the adjacent
lower end of the mandrel so that a discharge of said
ñuid is effected through the jet opening 62. This dis
right hand side wall of said enlarged slot portions 31,
said splines will be in alignment with the upper, enlarged
charged ñuid is under substantial pressure which is suffi
- parts 28 of the slots 27 so that as the barrel assembly
cient to cause the device to be forced in the direction
opposite the direction of discharge through said opening
is lowered further, the lower ends of said splines will
engage the shoulders 33 of the slots 27. Continued rota
62.
tion of the string and barrel assembly in the above de
The rotary releasing socket 14 is of well-known type
scribed direction will cause the lower end portions of said
and construction and includes a guide shoe 65 having 70 splines to engage the walls defining the right hand sides
a lip 66. When the device 10 is in the extended position,
of said slots 27 so that said splines may be lowered fur
the discharge jet 62 is diametrically opposite said lip 66.
ther into the bottom portions of the slots 27. The device
When fishing operations are in progress, the drill string
10 is then fully telescoped Vand theseal 44 is disposed
above the jet opening 62 as best shown in FIG. 2A.
is rotated slowly so as to rotate the device 10 and the
releasing socket 14 and at the same time the drilling ñuid 75 The next step is the establishment of circulation of the
3,020,081
6
opposite end of said body, saidr shank having a ñrst en
drilling fluid through the iish and this is effected by ap
plying suiiicient ñuid pressure in the string and device 10
larged diameter part adjacent said body andr of smaller
to break the plate 21 so that the drilling ñuid may be
pumped on down into and through said fish.
There may be conditions such that »the drilling fluid
diameter than said body, said part having a plurality of
annularly spaced slots extending from the free end of
said part toward said body, the slots being of greater
pressure developed by the pump‘is insufficient to frac
annular width at the top than at the bottom with a shoul
ture or shatter the plate 2l. In such case, it is necessary
der at the inner end ofeach of said wider portions, there
to use other means to break the plate. Various devices
may be used, one such device being shown in FIG. 4 and
comprises an elongated bar 92 having an inverted frusto
conical tip 93 at the lower end and having an eye 94 for
attachment of a cable 95 or the like. The bar 92 is
lowered through the string by means of the cable and the
lower end 93 of said bar is adapted to strike said plate
over a relatively small area `and etfect shattering of said
plate. The bar 92 is then raised to the top of the drill
string and removed therefrom by means of the cable 95.
being a longitudinally extending finger between each of
the larger portions of said slots, said ñngers terminating
When it is desired to use the device 10 as a bumper
sub for striking a downward blow, the barrel assembly is
at the outer end of said iirst part; a second enlarged di“
ameter part on said shank of substantially the same di~
arneter as the iirst enlarged diameter part and spaced
»longitudinally outwardly of the ñrst part, said second part
having a plurality of annularly spaced slots which are of
greater annular width at the end of said second part
facing the iirst part, the iingers of one part being aligned
with the narrower portions of the slot of the other part,_
said mandrel having a shank end extending outwardly
beyond the second part; a lock ring secured on said end
raised and lowered in the usual manner so that the lower 20 part, said ring having lugs receivable in the adjacent end
portions of the slots of the second part of the mandrel;
ends of the drive sleeve 56 strike the annular external
an annular sealing element on said end part el’ the shank;
shoulder 97 at the upper end of the body 16 of the man
means securing said'sealing element secured on said end
drel. lt will be understood, vof course, that the splines
part of the shank; a barrel assembly including a tubular
6i) permit a limited upward and downward` movement of
the device Iii for effecting such downward blows, the 25 barrel in which the shank portion of the mandrel is
telescopically receivable with the sealing element in slida~
splines being movable from the lowermost position with
ble sealing engagement' with the interior'of <said barrel,
in the lower parts of the lower slots 27 to a position
said barrel having an internally threaded socket at its
whereat the upper ends of said splines strike the lower
outer end for> attachment to an adjacent part of a drill
ends of the ñngers 34. Also, it will be apparent that ro
tation of the barrel assembly willeifect corresponding 30 string; a drive sleeve threadably secured to the inner end
of said barrel, said drive sleeve including an annular
rotation of the mandrel, the drive between the barrel unit
striking inner’v end part and aplurality of annularly an
and mandrel being eíected through said splines and the
ranged internal splines of a width to be received inthe
walls of the slots engageable by said splines.
narrower portions of the slots of the tirst and second part
When it is desired to use the device 10 as a bumper sub
for striking an upward blow, the barrel assembly is raised 35 of the mandrel shank; telescoping and >extension of the
mandrel yand barrel assemblies being eiîected by relative
to the extended position, shown in FIGS. 3A, 3B and 5',
by reversing the procedure described in connection with
the telescoping of the device. When said device is in
this' extended position, the barrel unit may be raised and
longitudinal and rotational movements thereof, said
bumper subbeing effective for downward blows when
the assemblies are in telescoped position and -upward
lowered a limited amount so as to cause the upper end 40 blows when in the extended positions, there being a dis
part 57 of the drive sleeve 56 to strike upwardly against
the ring 39. The splines 6i) permit such limited move
ment and said splines travel between yan upper position
whereat the upper ends thereof engage the lower ends of
charge jet opening in tbe wall of the barrel so positioned
that when the assemblies rare Vin the extended position,
said jet opening is positioned outwardly of the sealing
element in the barrel and when the assemblies are in the
the lugs 40 of the ring 39 and a position whereat' the 45 telescoped position, said jet opening is positioned inwardly
of said sealing element; and means operable on said plate
lower ends of said splines engage the upper ends of the
for breaking same.
tingers 32 of the slots 27. When the device 10 is being
2. A. hydraulic kick bumper sub, comprising: a mandrel
used as a bumper sub for striking either a downward or
assembly including a tubular mandrel having a bore
an upward blow, the usual procedure in such cases is fol
therethrough and having a body from one end of which
lowed.
there
extends an axially arranged externally threaded,
While a rotary releasing socket -is shown in connection
tapered pin having an internally threaded counterbore
with the kick bumper sub it), it is to be understood that
with a shoulder at the inner end thereof; a _shatterable
other types of fishing tools may be used. For example,
plate in said counterbore; an externally threaded nut
rotary releasing spears may be used as well as otherv types
threaded. into said counterbore and securing said plate
of iishing devices.
55
against said shoulder; a shank of reduced diameter ex-l
It is thought that the invention and many of its attend
tending axially from the opposite end of said body, said
ant advantages will be understood from the foregoingrde
shank having a lirst enlarged diameter part adjacent said
scription and it is thought that it will be apparent that
body and of smaller diameter than said body,’said part
various changes may be made in the form, construction
and arrangement of the parts of the invention without 60 having a plurality of annularly spaced slots extending
from the free end of said part toward said body, the slots
departing from the spirit and scope thereof or sacrificing
being of greater width at the top than at the'bottom with
all of its material advantages, the embodiment herein
a shoulder at the inner end of each of ksaid wider por
before described being merely for the purposes of illus
tions, there being a longitudinally extending'tinger be»
tration.
tween each of the larger portions of said slots; a second
'I claim:
1. A hydraulic kick bumper sub, comprising: a mandrel
assembly including a tubular mandrel having >a bore
therethrough and having a body from one end of which
enlarged diameter part on said shank of substantially the
same diameter as the iirst enlarged- diameter part and
spaced longitudinally outwardly of the ñrst part, said sec
ond part having a plurality of annularly spaced slots’which
there extends an axially arranged externally threaded,
tapered pin having an internally threaded counterbore 70 are of greater annular width at the end of said` second
part facing the ñrst part, the ñngers of one part being
with a shoulder at the inner end thereof; a shatterable
aligned with the narrower portions of the slot of the
other part, said mandrel having a shank end extending out
wardly beyond the second part; a lock ring secured onV
shank of reduced diameter extending axially'from the 75 said end part; an annular sealing element secured on said
plate in said counterbore and in abutment with said shoul
der; an externally threaded nut threaded into said counter
bore and securing said plate against'said shoulder; a
3,020,081
8
end part of the shank; a barrel assembly including a tubu
lar barrel in which the shank portion of the mandrel is
telescopically receivable with the sealing element in slida
ble sealing engagement with the interior of said barrel,
a drive sleeve secured to the inner end of said barrel,
said drive sleeve including an annular striking inner end
the slots of one group being staggered relative to respec
tive slots of the other group; an annular sealing element
secured on said shank outwardly of the second group of
slots; a barrel assembly including a tubular barrel in
which at least a part of the shank of the mandrel is
part and a plurality of annularly arranged internal splines
telescopically receivable, with the sealing element in slid
able sealing engagement with the interior of said barrel;
of a width to be received in the narrower portions of
the slots of the first and second part of the mandrel shank;
a plurality of annularly arranged splines on the inside
of the barrel assembly, said splines being receivable in
telescoping and extension of the mandrel and barrel 10 respective groups of slots; telescoping and extension of
assemblies being effected by relative longitudinal and
rotational movements thereof, said bumper sub being ef
fective for downward blows when the assemblies are in
telescoped position and upward blows when in the ex
the mandrel and barrel assemblies being effected by rel
ative longitudinal and rotational movements thereof;
striking parts on said assemblies, said assemblies having
limited longitudinal movement relative to each other
tended positions, there being a discharge jet opening in the 15 when in the telescoped and in the extended positions
wall of the barrel so positioned that when the assemblies
respectively, said striking parts being arranged so that
are in the extended position, said jet opening is positioned
upward and downward blows may be provided therebe
outwardly of the sealing element in the barrel and when
the assemblies are in the telescoped position, said jet
tween when said assemblies are extended 0r telescoped
respectively', there being a discharge jet opening in the
opening is positioned inwardly of said sealing element; 20 wall of the barrel so positioned that when the assem
and means operable within said mandrel for breaking
said plate.
blies are in the extended position, said jet opening is
positioned outwardly of the sealing element in the barrel,
3. ln a hydraulic kick bumper sub: a mandrel assem
and when the assemblies are in the telescoped position,
bly including a tubular mandrel having a bore there
said jet opening is at the inner side of said sealing ele»
through and having a body part and a shank of reduced
ment; a shatter-able plate closing the bore of the man
diameter extending axially from one end of said body,
drel; and means operable within the bumper sub for
said shank having a first enlarged diameter part adjacent
breaking said plate.
said body and of smaller diameter than said body, said
5. In combination: a hydraulic kick bumper sub com»
part having a plurality of annularly spaced slots extend
prising, a mandrel assembly including a tubular man
ing from the free end of said part toward said body, 30 drel having a bore therethrough, said mandrel including
the slots being of greater width at the top than at the
a shank having a group of annularly spaced spline slots
bottom with a shoulder at the inner end of each of said
adjacent one end, and a second group of annularly spaced
wider portions, there being a longitudinally extending tin
slots spaced longitudinally outwardly of the first group
ger between each of the larger portions of said slots;
of slots, the ends of each group of slots facing the other
a second enlarged diameter part on said shank of sub 35 group being open and the slots of one group being stag
stantially the same diameter as the first enlarged diam
gered relative to respective slots of the other group; an
eter part and spaced longitudinally outwardly of the first
annular sealing element secured on said shank outwardly
part, said second part having a plurality of annularly
0f the second group of slots; a barrel assembly including
spaced slots which are of greater annular width at the
a tubular barrel in which at least a part of the shank of
end of said second part facing the first part, the fingers 40 the mandrel is telescopically receivable, with the sealing
of one part being aligned with the narrower portions
element in slidable sealing engagement with the inte
of the slot of the other part, said mandrel having a
rior of said barrel; a plurality of annularly arranged
shank end extending outwardly beyond the second part;
splines on the inside of the barrel assembly, said
a lock ring secured on said end part; an annular seal
splines being receivable in said slots; telescoping and ex
ing element secured on said end part of the shank; a 45 tension of the mandrel and barrel assemblies being ef
shatterable plate secured in said mandrel and closing
fected by relative longitudinal and rotational movements
the bore therethrough; a barrel assembly including a tu
thereof; striking parts on said assemblies, said assem
bular barrel in which the shank portion of the mandrel
blies having limited longitudinal movement relative to
is telescopically receivable with the sealing element in
each other when in the telescoped and in the extended
slidable sealing engagement with the interior of said 50 positions respectively, said striking parts being arranged’
barrel; an annular striking shoulder within said barrel
so that upward and downward blows may be provided
assembly adapted to strike said ring and a plurality of
therebetween when said assemblies are extended or tele
annularly arranged splines on the interior of said barrel
scoped respectively, there being a discharge jet opening
assembly, said splines being slidably receivable in the
in the wall of the barrel so positioned that when the
narrower portions of the slots of the first and second
assemblies are in the extended position, said jet opening
part of the mandrel shank; telescoping and extension
is positioned outwardly of the sealing element in the
of the mandrel and barrel assemblies being effected by
barrel, and when the assemblies are in the telescoped
relative longitudinal and rotational movements thereof,
position, said jet opening is at the inner side of said seal
said bumper sub being effective for downward blows
ing element; a shatterable plate closing the mandrel bore;
when the assemblies are in telescoped position and up 60 means operable within the bumper sub for breaking said
ward blows when in the extended positions, there being
plate; and a socket type fishing tool having an open lower
a discharge jet opening in the wall of the barrel so posi
end with a lip at said end, and an internal annular seal,
tioned that when the assemblies are in the extended posi~
said jet opening being located at the diametricallyl oppo
tion, said jet opening is positioned outwardly of the seal
site side of the barrel relative to the lip of said socket.
ing element in the barrel and when the assemblies are 65
6. In a hydraulic kick bumper sub: a tubular mandrel
in the telescoped position, said jet opening is positioned
assembly including a shank and an annular sealing element
inwardly of said sealing element; and means operable
adjacent the inner free end of said shank; a barrel assem
within the bumper sub for breaking said plate.
bly including a tubular barrel in which at least a part
of the shank of the mandrel is telescopically receivable
4. ln a hydraulic kick bumper sub: a mandrel assem
bly including a tubular mandrel having a bore there 70 with the sealing element in slidable sealing engagement
through, said mandrel including a shank having a group
with the interior of said barrel; said assemblies being
movable longitudinally between fully telescoped and fully
of annularly spaced slots adjacent one end and a second
group of annularly spaced slots spaced longitudinally
extended positions; means providing a rotary drive con
nection between said assemblies when in said positions
outwardly of the first group of slots, the ends of each
group of slots facing the other group being open and 75 respectively; means limiting relative longitudinal move
8,020,081
9
10
.
ment between said assemblies when at said positions; strik
ing parts on said assemblies, said striking parts being ar
ranged so that upward and.> downward blows may be pro
vided therebetween when said assemblies are extended or
ing liuid therefrom, and when the assemblies are in the
telescoped position, said jet opening is at the inner side
of said sealing element and cut off said jet opening from
receiving tiuid from said barrel.
10. In a hydraulic kick bumper sub: a barrel assembly
including a tubular barrel having a jet opening in one side
thereof; a mandrel assembly, having a passage there
telescoped respectively, there being a discharge jet opening
in the wall of the barrel so positioned that when the as
semblies are in the extended position, said jet opening is
through and including a part telescopically receivable in
positioned outwardly of the sealing element in the barrel
the barrel; a sealing element on said part in slidable sealing
and when the assemblies are in the telescoped position,
said jet opening is at the inner side of said sealing element; 10 engagement with the interior of said barrel, said assemblies »
being movable longitudinally between telescoped and ex
and means operable on said plate for breaking same.
tended positions, the sealing element of said mandrel being
7. In combination: a hydraulic kick bumper sub corn
at one side of the jet opening when the assemblies are ex
prising a tubular mandrel assembly including a shank, and
tended and at the opposite side of said opening when the
an annular sealing element adjacent the inner free end
of said shank; a barrel assembly including a tubular 15 assemblies are telescoped; and a shatterable closure clos
ing the passageway through the mandrel.
barrel in which at least a part of the shank of the mandrel
11. A combination of a bumper sub comprising a
is telescopically receivable with the sealing element in
slidable sealing engagement with the interior of said barrel,
said assemblies being movable longitudinally between
fully telescoped and fully extended positions; means pro
mandrel assembly and a barrel assembly telescopically
connected together, said barrel assembly having a dis
20 charge jet at one side which is in operable communication
viding a rotary drive connection between said assemblies
when in said positions; means limiting relative longitudinal
movement between said assemblies when at said positions;
striking parts on said assemblies, said striking parts being
with the interior of said bumper sub when the parts there~
of are extended and which is operably closed against com
munication with the interior of the bumper sub when the
parts thereof are telescoped; and a ñshing tool secured to
arranged so that upward and downward blows may be 25 one end of one of said assemblies.>
l2. in a hydraulic kick bumper sub in which drilling
provided therebetween when said assemblies are extended
Jiluid is received: a barrel assembly including a tubular
or telescoped respectively; a shatterable plate preventing
barrel having a jet opening in one side thereof; a mandrel
fluid ñow through the mandrel; a socket type fishing tool
assembly, having a passage therethrough and including a
secured to the lower end of the mandrel and having a iish
engaging lip, there being a discharge jet in the opening in 30 part telescopically receivable in the barrel; and a sealing
element on said part in slidable sealing engagement with
the wall of the barrel at the opposite side from said lip;
the interior of said barrel, said assemblies being movable
and means operable on said plate for breaking same.
longitudinally between telescoped and extended positions,
8. In combination: a hydraulic kick bumper sub com
the sealing element of said mandrel being at one side of
prising a tubular mandrel assembly including a shank, and
an annular sealing element adjacent the inner free end of 35 the jet opening when the assemblies are extended so that
lluid from within the bumper sub may be discharged
said shank; a barrel assembly including a tubular barrel
through said jet opening and at the opposite side of said
in which at least a part of the shank of the mandrel is tele
opening when the assemblies are telescoped to thereby
scopically receivable with the sealing element in slidable
cut oit said jet opening from ñuid in said bumper sub;y
sealing engagement with the interior of said barrel, said
13. in a hydraulic kick bumper sub in which drilling
assemblies being movable longitudinally between fully 40
fluid is received: a tubular mandrel assembly including a
telescoped and fully extended positions; means providing
shank having a bore therethrough; an annular sealing ele
a rotary drive connection between said assemblies when
in said positions; means limiting relative longitudinal
movement between said assemblies when at said positions;
ment on said shank adjacent the free end thereof; a bar
rel assembly including a tubular barrel in which said
striking parts on said assemblies, said striking parts being 45 shank is telescopically slidable with the sealing element
in slidable sealing engagement with the interior of said
barrel, said assemblies being movable longitudinally be
tween telescoped and extended positions; means providing
or telescoped respectively; a shatterable plate preventing
a rotary drive connection between said assemblies; and
fluid flow through the mandrel; and a socket type fishing
tool secured to the lower end of the mandrel and having 50 means for effecting upward and downward striking blows
between said assemblies when same are in the extended
a fish engaging lip, there being a discharge jet in the open
and telescoped positions respectively, there being a dis
ing in the wall of the barrel at the opposite side from said
charge jet opening in the wall of the barrel so positioned Y
lip.
,
that when the assemblies are in the extended position, said
9. In a hydraulic kick bumper sub through which drill
ing fluid may ñow: a tubular mandrel assembly including 55 jet opening is positioned outwardly of the sealing'element
in the barrel so that fluid within the bumper sub may be
a shank having a bore therethrough; an annular sealing
discharged through said jet opening and when the assem~
element on said shank adjacent the free end thereof; a
blies are in the telescoped position, said jet opening is at
shatterable closure for the bore of said shank; a barrel
the inner side of said sealing element to thereby cut off
assembly including a tubular barrel in which said shank
is telescopically slidable with the sealing element in slid 60 said jet opening from ñuid in said bumper sub.
able sealing engagement with the interior of said barrel,
References Cited in the ñle of this patent
said assemblies being movable longitudinally between tele
UNITED STATES PATENTS
scoped and extended positions; means providing a rotary
drive connection between said assemblies; and means for
1,405,025
Sorensen ______________ -__ Ian. 31, 1922
arranged so that upward and downward blows may be
provided therebetween when said assemblies are extended
effecting upward and downward striking blows between 05
said assemblies when same are in the extended and tele
scoped positions respectively, there being a discharge jet
opening in the wall of the barrel so positioned that when
the assemblies are in the extended position, said jet open
ing is positioned outwardly of the sealing element in the 70
barrel connected with the interior of the barrel for receiv
1,696,378
Brauer ______________ __ Dec. 2S, 1928
1,860,016
1,870,540
2,394,832
Clouse ______________ __ May 24, 1932
Wells ________________ _.. Aug. 9, 1932
Young _______________ __ Feb. l2, 1946
2,502,567
Howard ______________ __ Apr. 4, 1950 `
2,647,008
Stewart etal ___________ __ July 28, 1953
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