CN111852386B - Packer capable of bearing large torque, high temperature and high pressure - Google Patents
Packer capable of bearing large torque, high temperature and high pressure Download PDFInfo
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- CN111852386B CN111852386B CN202010998324.4A CN202010998324A CN111852386B CN 111852386 B CN111852386 B CN 111852386B CN 202010998324 A CN202010998324 A CN 202010998324A CN 111852386 B CN111852386 B CN 111852386B
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- packer
- ball seat
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- 230000005540 biological transmission Effects 0.000 claims abstract description 81
- 210000000078 claw Anatomy 0.000 claims abstract description 25
- 238000012856 packing Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 36
- 238000012546 transfer Methods 0.000 claims description 24
- 230000001681 protective effect Effects 0.000 claims description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 11
- 230000000875 corresponding effect Effects 0.000 description 6
- 230000036961 partial effect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 241000282472 Canis lupus familiaris Species 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
- E21B33/1285—Packers; Plugs with a member expanded radially by axial pressure by fluid pressure
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/06—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for setting packers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
- E21B33/1295—Packers; Plugs with mechanical slips for hooking into the casing actuated by fluid pressure
Abstract
The invention provides a packer capable of bearing high torque, high temperature and high pressure, and relates to the technical field of well completion tools for oil and gas fields, wherein the packer capable of bearing high torque, high temperature and high pressure comprises a packer and a setting tool; the packer comprises a central pipe, a torque joint, a lower joint and a packing assembly; the packing assembly is sleeved on the central pipe and clamped between the torque joint and the lower joint; the setting tool comprises a main body tube and a torque transmission assembly; the torque transmission assembly comprises an upper joint, a torque transmission sleeve, a torque block, a rotary unlocking assembly and a locking claw, the torque transmission sleeve is sleeved on the main pipe, and the torque block is inserted between the main pipe and the torque transmission sleeve; the rotary unlocking assembly is connected between the main body pipe and the upper joint; the locking claw is fixedly sleeved on the main pipe and is positioned at the lower end of the torque transmission sleeve. The packer solves the technical problem that the packer has poor torque bearing capacity when the packer is rotationally lowered in the prior art.
Description
Technical Field
The invention relates to the technical field of oil and gas field well completion tools, in particular to a packer capable of bearing high torque, high temperature and high pressure.
Background
In the well completion process of an oil and gas field, for the well completion of a deep well or an ultra-deep well and an open hole well with complex well conditions, the well completion string is easily blocked in the running process, so that the well completion string cannot be put to a preset position, and the well site of the deep well and the ultra-deep well is accompanied with a high-temperature and high-pressure environment. The rotary running and the simultaneous punching and simultaneous running are effective means for solving the problem of running of the pipe column, but the rotary running needs a packer to bear high torque, and the simultaneous punching and simultaneous running needs to ensure that the packer cannot be hydraulically set when the well completion pipe column is run. Therefore, a new packer needs to be designed, and the packer can bear high torque rotation during the running process.
Disclosure of Invention
The invention aims to provide a packer capable of bearing high torque, high temperature and high pressure, so as to solve the technical problem that the packer has poor torque bearing capacity when the packer is rotated and lowered in the prior art.
The embodiment of the invention provides a packer capable of bearing high torque, high temperature and high pressure, which comprises: the packer comprises a packer and a setting tool used for being matched with the packer to use; the packer comprises a central tube, a torque joint, a lower joint and a packing assembly; the torque joint and the lower joint are respectively fixedly sleeved at two ends of the central pipe; the packing assembly is sleeved on the central pipe and clamped between the torque joint and the lower joint; the setting tool comprises a main tube and a torque transmission assembly; the torque transmission assembly comprises an upper joint, a torque transmission sleeve, a torque block, a rotary unlocking assembly and a locking claw, the torque transmission sleeve is sleeved on the main pipe, and the torque block is inserted between the main pipe and the torque transmission sleeve; the rotary unlocking assembly is connected between the main pipe and the upper joint and used for pressing or releasing the torque block so as to enable the main pipe and the torque transmission sleeve to be relatively static or rotate; the locking claw is fixedly sleeved on the main pipe and is positioned at the lower end of the torque transmission sleeve; and when the packer and the setting tool are in an assembly state, the torque joint is inserted into the torque transmission sleeve, and the locking claw is positioned in the central pipe and is in threaded connection with the torque joint.
Further, the rotary unlocking assembly comprises a connecting rod, a protective sleeve and a release piston; the upper ends of the connecting rod and the protective sleeve are fixedly connected to the upper joint, the release piston is positioned between the connecting rod and the protective sleeve, the connecting rod and the release piston enclose a first sealing space, a torque release pressure transmission hole is formed in the connecting rod, and the torque release pressure transmission hole is communicated with the first sealing space; a first protection ball seat is arranged in the connecting rod, and the first protection ball seat has a first initial state for plugging the torque release pressure transmission hole and a first release state for releasing the torque release pressure transmission hole; in the first release state, the torque release pressure in the first sealed space can be gradually increased to push the release piston to move upward and release the torque block.
Furthermore, a plurality of grooves are formed in the main body pipe along the circumferential direction of the main body pipe, and the side surfaces of the grooves are first inclined surfaces; the torque block is provided with a second inclined surface matched with the first inclined surface, and the main pipe rotates to enable the torque block to be separated from the groove in the state that the torque block is released by the rotary unlocking assembly.
Further, the packing assembly comprises a rubber cylinder, slips and a second sealed space; the rubber cylinder and the slips are sleeved on the central pipe; a central pipe pressure transfer hole is formed in the central pipe and communicated with the second sealing space; setting pressure in the second sealed space is gradually increased, so that the rubber cylinder and the slips can be tightly abutted against the well wall; the packing assembly is made of high-temperature-resistant materials.
Further, the packing assembly further comprises an upper setting piston, a lower setting piston, a hydraulic cylinder, a locking ring, an upper cone and a lower cone which are all sleeved on the central pipe; the rubber cylinder is positioned between the torque joint and the upper setting piston, a gap is reserved between the upper setting piston and the lower setting piston, and the central pipe pressure transmission hole is positioned in the gap; the hydraulic cylinder is sleeved on the outer peripheral sides of the upper setting piston and the lower setting piston, the upper part of the hydraulic cylinder is fixedly connected with the upper setting piston, the lower part of the hydraulic cylinder is fixedly connected with the locking ring, and the central tube, the upper setting piston, the lower setting piston and the hydraulic cylinder enclose the second sealed space; the slips are positioned between the upper cone and the lower cone; and the setting pressure in the second sealed space is gradually increased, so that the upper setting piston and the lower setting piston move back to back.
Further, the packing assembly further comprises a shear ring; the shearing ring is in threaded connection with the upper cone, and the shearing ring is connected with the lower part of the hydraulic cylinder through a copper screw.
Furthermore, the setting tool also comprises a sealing rod, the sealing rod is inserted at the lower end of the main body pipe, and a setting pressure transmission hole and two groups of sealing structures are arranged on the sealing rod; the setting pressure transmission hole is positioned between the two groups of sealing structures; the two groups of sealing structures can form a third sealing space with the central pipe and the main pipe in the assembling state; a second protection ball seat is arranged in the sealing rod, and the second protection ball seat has a second initial state for plugging the setting pressure transmission hole and a second release state for releasing the setting pressure transmission hole; in the second release state, the setting pressure in the second sealed space can be gradually increased, so that the rubber cylinder and the slips are expanded outwards along the radial direction and abut against the well wall.
Further, the setting tool also comprises a hydraulic release assembly; an annular mounting space is formed between the torque transmission sleeve and the main pipe; the hydraulic release assembly comprises a release piston, a support sleeve and an elastic piece, wherein the release piston is sleeved on the main body pipe, and the elastic piece is sleeved on the release piston; the main body pipe is provided with a boss along the radial direction, and the locking claw and the elastic piece are arranged along the axial direction of the main body pipe and clamped between the top surface of the annular mounting space and the boss; the supporting sleeve is clamped between the main pipe and the locking claw, and a fourth sealed space is defined by the main pipe, the supporting sleeve, the locking claw and the boss; a pressure transfer hole is formed in the main body pipe, and the pressure transfer hole is communicated with the fourth sealed space; a middle protection ball seat is arranged in the main pipe and has a third initial state for plugging the hands-off pressure transmission hole and a third release state for releasing the hands-off pressure transmission hole; in the third release state, the hydraulic release pressure in the fourth sealed space can be gradually increased to push the support sleeve to move upwards and reduce the diameter of the release piston.
Furthermore, the packer capable of bearing high torque, high temperature and high pressure has a running-in state and a setting state; the packer capable of bearing large torque, high temperature and high pressure further comprises a ball throwing device; the first protection ball seat, the middle protection ball seat and the second protection ball seat are arranged at intervals from top to bottom; in the run-in state, the first protection ball seat, the intermediate protection ball seat and the second protection ball seat are in an initial state, and the packer and the setting tool can rotate together; in the setting state, the pitching ball can pass through the first protection ball seat and the middle protection ball seat and stay on the second protection ball seat, and the torque release pressure transmission hole and the central pipe pressure transmission hole are in the release state; and the opening pressure, the torque release pressure and the setting pressure of the first protection ball seat, the middle protection ball seat and the second protection ball seat are sequentially increased.
Furthermore, the packer capable of bearing high torque, high temperature and high pressure also has a hydraulic pressure disengaging state; in the hydraulic pressure releasing state, the releasing pressure transmitting hole is in a releasing state; wherein the setting pressure is less than the hydraulic release pressure.
Has the advantages that:
according to the packer capable of bearing high torque, high temperature and high pressure, provided by the invention, in an assembly state of the packer and a setting tool, the torque joint is inserted into the torque transmission sleeve, and the locking claw is positioned in the central tube and is in threaded connection with the torque joint. The drilling rod drives the in-process that the top connection pivoted, lock claw and torque joint threaded connection can realize the packer and sit the reliable connection of sealing the instrument, and simultaneously, the transmission of moment of torsion can be realized to the mode that torque joint and torque transmission cover were pegged graft, and then at the in-process of going into the oil gas well with the packer, can make and bear big moment of torsion high temperature high pressure packer and can bear great moment of torsion rotation and go into down.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a cross-sectional view of a packer capable of withstanding high torque, high temperature and high pressure according to an embodiment of the invention;
FIG. 2 is a cross-sectional view of the packer;
FIG. 3 is a cross-sectional view of a setting tool;
FIG. 4 is one of the assembled cross-sectional views of the main tube, torque block, torque transfer sleeve and release piston with the torque block in a compressed state;
FIG. 5 is a second cross-sectional view of the assembled main tube, torque block, torque transfer sleeve and release piston, with the torque block in a released state;
FIG. 6 is an enlarged partial schematic view of a portion of the setting tool of FIG. 3 with the first protective ball seat in a first initial state;
fig. 7 is an enlarged partial view of a portion of the setting tool of fig. 3 with the first protective ball seat in a first released state.
Icon:
10-a packer; 101-a central tube; 102-torque joint; 103-lower joint; 104-a rubber cylinder; 105-slips; 106-upper setting piston; 107-lower setting piston; 108-hydraulic cylinders; 109-a locking ring; 110-upper cone; 111-lower cone; 112-a shear ring; 1011-central tube pressure transfer hole;
20-setting tool; 201-main body tube; 202-upper connector; 203-torque transmitting sleeve; 204-torque block; 205-locking claws; 206-a connecting rod; 207-a protective sheath; 208-a release piston; 209-sealing rod; 210-release piston; 211-support sleeve; 212-a resilient member; 2011-grooves; 2012-pressure transfer hole without hand; 2061-torque release pressure transfer orifice; 2091-setting pressure transfer holes;
30-a first protective ball seat; 40-a second protective ball seat; 50-a middle protective ball seat; and 60-throwing the ball.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
The embodiment of the invention provides a packer capable of bearing high torque, high temperature and high pressure, which comprises a packer 10 and a setting tool 20 used for being matched with the packer 10 for use, as shown in fig. 1 to 3; the packer 10 includes a base pipe 101, a torque joint 102, a lower joint 103, and a packing assembly; the torque joint 102 and the lower joint 103 are respectively fixedly sleeved at two ends of the central tube 101; the packing assembly is sleeved on the central pipe 101 and clamped between the torque joint 102 and the lower joint 103; the setting tool 20 comprises a main body tube 201 and a torque transmitting assembly; the torque transmission assembly comprises an upper joint 202, a torque transmission sleeve 203, a torque block 204, a rotary unlocking assembly and a locking claw 205, wherein the torque transmission sleeve 203 is sleeved on the main pipe 201, and the torque block 204 is inserted between the main pipe 201 and the torque transmission sleeve 203; the rotary unlocking assembly is connected between the main body pipe 201 and the upper joint 202, and is used for pressing or releasing the torque block 204 so as to enable the main body pipe 201 and the torque transmission sleeve 203 to be relatively static or rotate; the locking claw 205 is fixedly sleeved on the main tube 201 and is positioned at the lower end of the torque transmission sleeve 203; in the assembled state of the packer 10 and setting tool 20, the torque sub 102 is plugged into the torque transmitting sleeve 203 and the locking dogs 205 are positioned in the base pipe 101 and threadedly connected to the torque sub 102.
In the packer capable of bearing high torque, high temperature and high pressure provided by the embodiment, when the packer 10 and the setting tool 20 are in an assembled state, the torque joint 102 is inserted into the torque transmission sleeve 203, and the locking claw 205 is positioned in the base pipe 101 and is in threaded connection with the torque joint 102. In the process that the drill pipe drives the upper connector 202 to rotate, the locking claw 205 is in threaded connection with the torque connector 102, reliable connection between the packer 10 and the setting tool 20 can be achieved, meanwhile, torque transmission can be achieved in the mode that the torque connector 102 is connected with the torque transmission sleeve 203 in an inserting mode, and then in the process that the packer 10 is put into an oil-gas well, the packer capable of bearing large torque, high temperature and high pressure can bear large torque to rotate and put into the well.
It should be noted that the main pipe 201 and the torque transmission sleeve 203 are relatively static during the process of running the packer capable of bearing high torque, high temperature and high pressure into the well.
Further, as shown in fig. 3 to 5, the rotary unlocking assembly includes a connecting rod 206, a protective sleeve 207, and a release piston 208; the upper ends of the connecting rod 206 and the protective sleeve 207 are both fixedly connected to the upper joint 202, the release piston 208 is located between the connecting rod 206 and the protective sleeve 207, the connecting rod 206 and the release piston 208 enclose a first sealed space, the connecting rod 206 is provided with a torque release pressure transmission hole 2061, and the torque release pressure transmission hole 2061 is communicated with the first sealed space; a first protection ball seat 30 is arranged in the connecting rod 206, and the first protection ball seat 30 has a first initial state for blocking the torque release pressure transmission hole 2061 and a first release state for releasing the torque release pressure transmission hole 2061; in the first release state, the torque release pressure in the first sealed space can gradually increase to push the release piston 208 to move upward and release the torque block 204.
As shown in fig. 3, a space for the release piston 208 to move upward is left between the upper end of the release piston 208 and the upper joint 202.
In an embodiment of the present application, as shown in fig. 3 to 5, the main body tube 201 is provided with a plurality of grooves 2011 along a circumferential direction thereof, and a side surface of the groove 2011 is a first inclined surface; the torque block 204 has a second inclined surface matched with the first inclined surface, and when the rotation unlocking assembly releases the torque block 204, the main tube 201 rotates to enable the torque block 204 to be separated from the groove 2011.
Having described the specific structure of the packer 10 and the setting tool 20 for torque transmission, the packer 10 and the setting tool 20 are further described below, respectively.
In this embodiment, as shown in FIG. 2, the packing assembly includes a packing cylinder 104, slips 105, and a second sealed space; the rubber cylinder 104 and the slips 105 are sleeved on the central pipe 101; a central pipe pressure transfer hole 1011 is formed in the central pipe 101, and the central pipe pressure transfer hole 1011 is communicated with the second sealed space; the setting pressure in the second sealed space is gradually increased, so that the rubber cylinder 104 and the slips 105 can be tightly abutted against the well wall.
Specifically, with continued reference to fig. 2, the packing assembly further includes an upper setting piston 106, a lower setting piston 107, a hydraulic cylinder 108, a lock ring 109, an upper cone 110 and a lower cone 111 all sleeved on the central tube 101; the rubber cylinder 104 is positioned between the torque joint 102 and the upper setting piston 106, a gap is reserved between the upper setting piston 106 and the lower setting piston 107, and the central pipe pressure transmission hole 1011 is positioned at the gap; the hydraulic cylinder 108 is sleeved on the outer peripheral sides of the upper setting piston 106 and the lower setting piston 107, the upper part of the hydraulic cylinder 108 is fixedly connected with the upper setting piston 106, the lower part of the hydraulic cylinder 108 is fixedly connected with the lock ring 109, and the central tube 101, the upper setting piston 106, the lower setting piston 107 and the hydraulic cylinder 108 enclose a second sealed space; slips 105 are positioned between upper cone 110 and lower cone 111; the setting pressure in the second sealed space is gradually increased, so that the upper setting piston 106 and the lower setting piston 107 can move back and forth, the rubber cylinder 104 is pushed to expand, and the slips 105 expand and are tightly pressed against the well wall.
In one embodiment, the portions of the upper cone 110 that contact the slips 105 are beveled such that the slips 105 expand outward and abut the wellbore wall as the upper cone 110 moves axially downward.
With continued reference to fig. 2, the packing assembly further includes a shear ring 112; the shear ring 112 is screwed to the upper cone 110, and the shear ring 112 is connected to the lower portion of the hydraulic cylinder 108 by a copper screw. In the set condition, the shear ring 112 will move downward with the upper cone 110, shearing the copper screws. The copper screw plays a role of safety, and can be cut short only when certain pressure is reached, and then relative movement can be generated. In addition, the first protection ball seat 30, the second protection ball seat 40, the middle protection ball seat 50, the release piston 210, etc. are all installed with copper screws, and the specific principle is similar to the foregoing, and will not be described in detail herein.
In view of the unsetting problem of the packer 10 which requires its removal after a long period of use, the packer 10 also includes a unsetting assembly. The decapsulation element may be implemented or referred to in the art, and will not be described herein.
Having described the specific structure of the packer 10, the setting tool 20 is described in detail below.
As shown in fig. 3, the setting tool 20 further includes a sealing rod 209, the sealing rod 209 is inserted into the lower end of the main body pipe 201, and the sealing rod 209 is provided with a setting pressure transfer hole 2091 and two sets of sealing structures; the setting pressure transfer hole 2091 is positioned between the two sets of sealing structures; the two sealing structures can enclose a third sealing space with the central pipe 101 and the main body pipe 201 in an assembling state; a second protection ball seat 40 is arranged in the sealing rod 209, and the second protection ball seat 40 has a second initial state for blocking the setting pressure transmission hole 2091 and a second release state for releasing the setting pressure transmission hole 2091; in a second, released state, the setting pressure in the second sealed space can be gradually increased to expand the packing element 104 and slips 105 radially outward and against the wellbore wall.
Wherein, the seal structure includes a seal groove arranged on the main pipe 201 and a seal ring arranged in the seal groove.
Specifically, the slips 105 may be of the prior art; further, a slip cover may be provided on the outer peripheral side of the slip 105.
Further, as shown in fig. 3, the setting tool 20 also includes a hydraulic release assembly; an annular installation space is formed between the torque transmission sleeve 203 and the main pipe 201; the hydraulic release assembly comprises a release piston 210 sleeved on the main pipe 201, a support sleeve 211 and an elastic element 212, wherein the elastic element 212 is sleeved on the release piston 210; the main body pipe 201 is provided with a boss along the radial direction, and the locking claw 205 and the elastic element 212 are arranged along the axial direction of the main body pipe 201 and clamped between the top surface of the annular installation space and the boss; the supporting sleeve 211 is clamped between the main tube 201 and the locking claw 205, and the main tube 201, the supporting sleeve 211, the locking claw 205 and the boss enclose a fourth sealed space; a pressure transfer hole 2012 for releasing the hand is formed in the main tube 201, and the pressure transfer hole 2012 for releasing the hand is communicated with the fourth sealed space; the main tube 201 is internally provided with an intermediate protecting ball seat 50, and the intermediate protecting ball seat 50 has a third initial state for plugging the hands-free pressure transmission hole 2012 and a third release state for releasing the hands-free pressure transmission hole 2012; in the third release state, the hydraulic release pressure in the fourth sealed space can be gradually increased to push the support sleeve 211 to move upward and reduce the diameter of the release piston 210.
Wherein, the elastic member 212 is a spring. The primary function of the spring is to compress the locking pawl 205 to prevent misalignment of the threads of the locking pawl 205 with the threads of the torque connector 102 when the threads are loosened during rotational handoff. To ensure a reduction in the diameter of the release piston 210, the locking pawl 205 is provided with a plurality of slits in the axial direction.
It should be noted that the first protective ball seat 30 and the intermediate protective ball seat 50 have the same structure and principle. Taking the first protection ball seat 30 as an example, fig. 6 shows the first protection ball seat 30 in the first initial state; fig. 7 shows the first protective ball seat 30 in a first released state.
It should be noted that, the aforementioned first sealed space, the second sealed space, the third sealed space and the fourth sealed space are all used to ensure that when the pressure is applied, the hydraulic pressure can enter the corresponding sealed space to push the corresponding component to perform the corresponding action. The packer capable of bearing high torque, high temperature and high pressure can be used in a high-pressure environment. In addition, the rubber sleeve 104 and other sealing elements in the packer capable of bearing high torque, high temperature and high pressure of the embodiment are high temperature sealing elements, so that the gas completion device can be used in high temperature environment.
In the embodiment, the packer capable of bearing high torque, high temperature and high pressure has a running state and a setting state; the packer capable of bearing large torque, high temperature and high pressure further comprises a ball 60; the first protection ball seat 30, the middle protection ball seat 50 and the second protection ball seat 40 are spaced from top to bottom; in the run-in condition, the first, intermediate and second protection seats 30, 50, 40 are in an initial condition, the packer 10 and setting tool 20 being able to rotate together; in the set state, the pitch ball 60 can pass through the first protection ball seat 30 and the middle protection ball seat 50 and stay on the second protection ball seat 40, and the torque release pressure transmission hole 2061 and the central tube pressure transmission hole 1011 are both in the release state; wherein the opening pressure, the torque release pressure and the setting pressure of the first protective ball seat 30, the middle protective ball seat 50 and the second protective ball seat 40 are sequentially increased.
Specifically, the packer capable of bearing high torque, high temperature and high pressure has a running-in state, a setting state and a releasing state in sequence in the using process. These three states will be described in detail below.
(1) Run in state
In the run-in state, as shown in fig. 1, the torque block 204 locks the torque transmission sleeve 203 and the main tube 201, preventing the torque transmission sleeve 203 and the main tube 201 from rotating relative to each other, i.e., making the main tube 201 and the torque transmission sleeve 203 relatively stationary.
At this point, when the drill pipe is connected to the top sub 202 and the top sub 202 is rotated, the packer 10 and setting tool 20 will rotate together. Wherein the order of torque transfer is: the upper joint 202 and the connecting rod 206 transmit torque through threads, the connecting rod 206 and the torque transmission sleeve 203 transmit torque through the torque block 204, the torque transmission sleeve 203 and the torque joint 102 transmit torque, the torque joint 102 and the central tube 101 transmit torque through threads, the central tube 101 and the lower cone 111 transmit torque through a torque key, and the lower cone 111 and the connecting cylinder, the connecting cylinder and the lower joint 103 transmit torque through threads.
It should be noted that in the run-in state, the first protection ball seat 30, the intermediate protection ball seat 50 and the second protection ball seat 40 are all in the initial state, and accordingly, the torque release pressure transfer hole 2061, the setting pressure transfer hole 2091 and the central tube 101 pressure transfer hole are all in the closed state. During trimming, the pressure transfer ports inside the setting tool 20 are protected from the pressure inside the pipe by the corresponding ball seats.
(2) Set state
In the setting state, as shown in fig. 1, when the pitching ball 60 is in the first protecting ball seat 30 and the first protecting ball seat 30 moves downward to the large inner diameter of the connecting rod 206 after being pressed to a certain pressure, the pawl structure at the lower part of the first protecting ball seat 30 is expanded outward, and the pitching ball 60 falls downward into the middle protecting ball seat 50; when the middle protection ball seat 50 moves downwards to the large inner diameter of the main body pipe 201 after being pressed to a certain pressure, the pawl structure at the lower part of the middle protection ball seat 50 is expanded outwards, and the pitching ball 60 falls into the second protection ball seat 40; after the second protection ball seat 40 is continuously pressed to a certain pressure, the second protection ball seat moves downwards to the small inner diameter part of the sealing rod 209 and does not move downwards any more, and the upper setting piston 106 and the lower setting piston 107 of the packer 10 are continuously pressed to respectively press the rubber barrel 104 and the slips 105 for setting.
In short, when the ball 60 is pressurized, the ball 60 sequentially passes through the first and intermediate protection ball seats 30 and 50, falls on the second protection ball seat 40, and pushes the second protection ball seat 40 to move downward by a short distance, and thereafter the second protection ball seat 40 cannot move downward any more, and in this process, the pressure transfer holes blocked by the three protection ball seats are sequentially released.
It should be noted that the form of engagement of the pitch ball 60 with the protective ball seat will be clear to those skilled in the art, and sealing or communication within the tube may be achieved by engagement of the two.
(3) Out of hand state
A hands-off condition, i.e., a condition in which the setting tool 20 may be removed from the packer 10. This embodiment includes a rotary release and a hydraulic release.
Since the torque block 204 is released after setting is complete, a rotational release can now be used to disengage the locking pawl 205 from the threads of the base pipe 101 to facilitate removal of the setting tool 20.
If hydraulic release is required, pressurization is continued after setting is completed to increase the pressure, and the hydraulic release process is continued.
Specifically, in the hydraulic pressure release state, the release pressure transmission hole 2012 is in the release state; wherein the setting pressure is less than the hydraulic pressure. After the pressure is further pressed, the hydraulic pressure in the fourth sealed space gradually increases, and pushes the support sleeve 211 to move upwards, so that the diameter of the release piston 210 is reduced, and the locking claw 205 is disengaged from the thread of the central tube 101, so as to take out the setting tool 20.
It should be noted that, since the pressure required for each process is different, the corresponding process can be controlled by applying different pressures during use.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A packer capable of bearing high-torque, high-temperature and high-pressure is characterized by comprising: a packer (10) and a setting tool (20) for use in conjunction with the packer (10);
the packer (10) comprises a base pipe (101), a torque joint (102), a lower joint (103), and a packing assembly; the torque joint (102) and the lower joint (103) are respectively fixedly sleeved at two ends of the central pipe (101); the packing assembly is clamped between the torque joint (102) and the lower joint (103), and comprises a rubber cylinder (104), slips (105), an upper setting piston (106), a lower setting piston (107) and a hydraulic cylinder (108) which are all sleeved on the central pipe (101); the rubber cylinder (104) is located between the torque joint (102) and the upper setting piston (106), a gap is reserved between the upper setting piston (106) and the lower setting piston (107), the hydraulic cylinder (108) is sleeved on the outer peripheral sides of the upper setting piston (106) and the lower setting piston (107), the upper portion of the hydraulic cylinder (108) is fixedly connected with the upper setting piston (106), and the central pipe (101), the upper setting piston (106), the lower setting piston (107) and the hydraulic cylinder (108) enclose a second sealed space; a central pipe pressure transmission hole (1011) is formed in the central pipe (101), and the central pipe pressure transmission hole (1011) is formed in the gap and communicated with the second sealing space; setting pressure in the second sealed space is gradually increased, so that the rubber cylinder (104) and the slips (105) can be tightly abutted against the well wall;
the setting tool (20) comprises a main tube (201) and a torque transfer assembly; the torque transmission assembly comprises an upper joint (202), a torque transmission sleeve (203), a torque block (204), a rotary unlocking assembly and a locking claw (205), the main pipe (201) is sleeved with the torque transmission sleeve (203), and the torque block (204) is inserted between the main pipe (201) and the torque transmission sleeve (203); the rotary unlocking assembly is connected between the main pipe (201) and the upper joint (202), and is used for pressing or releasing the torque block (204) so as to enable the main pipe (201) and the torque transmission sleeve (203) to be relatively static or relatively rotate respectively; the locking claw (205) is fixedly sleeved on the main pipe (201) and is positioned at the lower end of the torque transmission sleeve (203);
in the assembly state of the packer (10) and the setting tool (20), the torque joint (102) is plugged with the torque transmission sleeve (203), and the locking claw (205) is positioned in the central pipe (101) and is in threaded connection with the torque joint (102); the rotary unlocking assembly comprises a connecting rod (206), a protective sleeve (207) and a release piston (208);
the upper ends of the connecting rod (206) and the protective sleeve (207) are fixedly connected to the upper joint (202), the release piston (208) is located between the connecting rod (206) and the protective sleeve (207), the connecting rod (206) and the release piston (208) enclose a first sealing space, a torque release pressure transmission hole (2061) is formed in the connecting rod (206), and the torque release pressure transmission hole (2061) is communicated with the first sealing space;
a first protection ball seat (30) is arranged in the connecting rod (206), and the first protection ball seat (30) has a first initial state for blocking the torque release pressure transmission hole (2061) and a first release state for releasing the torque release pressure transmission hole (2061);
in the first release state, the torque release pressure within the first sealed space can gradually increase to urge the release piston (208) to move upward and release the torque block (204).
2. The packer capable of bearing high-torque high-temperature and high-pressure according to claim 1, wherein the main body pipe (201) is provided with a plurality of grooves (2011) along the circumference, and the side surfaces of the grooves (2011) are first inclined surfaces;
the torque block (204) is provided with a second inclined surface matched with the first inclined surface, and when the rotation unlocking assembly releases the torque block (204), the main pipe (201) rotates to enable the torque block (204) to be separated from the groove (2011).
3. The packer capable of bearing high-torque high-temperature and high-pressure according to claim 1 or 2, wherein the packer assembly is made of a high-temperature resistant material.
4. The packer capable of bearing high-torque high-temperature and high-pressure according to claim 1, wherein the packing assembly further comprises a lock ring (109), an upper cone (110) and a lower cone (111) which are all sleeved on the central pipe (101);
the lower part of the hydraulic cylinder (108) is fixedly connected with the lock ring (109); the slips (105) are located between the upper cone (110) and the lower cone (111);
the setting pressure in the second sealed space is gradually increased, so that the upper setting piston (106) and the lower setting piston (107) can move back and forth.
5. The packer capable of withstanding high torque, high temperature and high pressure according to claim 4, wherein the pack-off assembly further comprises a shear ring (112);
the shearing ring (112) is in threaded connection with the upper cone (110), and the shearing ring (112) is connected with the lower part of the hydraulic cylinder (108) through a copper screw.
6. The packer capable of bearing high-torque high-temperature and high-pressure as claimed in claim 3, wherein the setting tool (20) further comprises a sealing rod (209), the sealing rod (209) is inserted into the lower end of the main pipe (201), and a setting pressure transmission hole (2091) and two sets of sealing structures are arranged on the sealing rod (209); the setting pressure transmission hole (2091) is positioned between the two sealing structures; the two sealing structures can enclose a third sealing space with the central pipe (101) and the main pipe (201) in the assembled state;
a second protection ball seat (40) is arranged in the sealing rod (209), and the second protection ball seat (40) has a second initial state for blocking the setting pressure transmission hole (2091) and a second release state for releasing the setting pressure transmission hole (2091); in the second release state, the setting pressure in the second sealed space can be gradually increased, so that the rubber cylinder (104) and the slips (105) are expanded outwards in the radial direction and are pressed against the well wall.
7. The high torque tolerant high temperature and high pressure packer as claimed in claim 6, wherein the setting tool (20) further comprises a hydraulic release assembly;
an annular mounting space is arranged between the torque transmission sleeve (203) and the main pipe (201);
the hydraulic release assembly comprises a release piston (210) sleeved on the main pipe (201), a supporting sleeve (211) and an elastic piece (212), and the elastic piece (212) is sleeved on the release piston (210); the main body pipe (201) is provided with a boss along the radial direction, and the locking claw (205) and the elastic piece (212) are arranged along the axial direction of the main body pipe (201) and clamped between the top surface of the annular installation space and the boss; the supporting sleeve (211) is clamped between the main pipe (201) and the locking claw (205), and a fourth sealed space is defined by the main pipe (201), the supporting sleeve (211), the locking claw (205) and the boss; a pressure transmitting hole (2012) for releasing the hand is formed in the main body pipe (201), and the pressure transmitting hole (2012) for releasing the hand is communicated with the fourth sealed space;
an intermediate protection ball seat (50) is arranged in the main pipe (201), and the intermediate protection ball seat (50) has a third initial state for plugging the hands-free pressure transmission hole (2012) and a third release state for releasing the hands-free pressure transmission hole (2012); in the third release state, the hydraulic release pressure in the fourth sealed space can be gradually increased to push the support sleeve (211) to move upwards and reduce the diameter of the release piston (210).
8. The packer capable of withstanding high torque, high temperature and high pressure as claimed in claim 7, wherein the packer has a run in condition and a set condition;
the packer capable of bearing high torque, high temperature and high pressure further comprises a ball throwing device (60); the first protection ball seat (30), the middle protection ball seat (50) and the second protection ball seat (40) are arranged from top to bottom at intervals;
in the run-in state, the first protection ball seat (30), the intermediate protection ball seat (50) and the second protection ball seat (40) are in an initial state, the packer (10) and the setting tool (20) being rotatable together;
in the set state, the pitch ball (60) can pass through the first protection ball seat (30) and the intermediate protection ball seat (50) and stay on the second protection ball seat (40), and the torque release pressure transfer hole (2061) and the central pipe pressure transfer hole (1011) are both in a release state;
wherein the opening pressure, the torque release pressure and the setting pressure of the first protection ball seat (30), the intermediate protection ball seat (50) and the second protection ball seat (40) are sequentially increased.
9. The packer capable of withstanding high torque, high temperature and high pressure as claimed in claim 8, wherein the packer further has a hydraulic trip condition;
in the hydraulic pressure releasing state, the releasing pressure transmission hole (2012) is in a releasing state;
wherein the setting pressure is less than the hydraulic release pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010998324.4A CN111852386B (en) | 2020-09-22 | 2020-09-22 | Packer capable of bearing large torque, high temperature and high pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010998324.4A CN111852386B (en) | 2020-09-22 | 2020-09-22 | Packer capable of bearing large torque, high temperature and high pressure |
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| Publication Number | Publication Date |
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| CN111852386A CN111852386A (en) | 2020-10-30 |
| CN111852386B true CN111852386B (en) | 2020-12-22 |
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| CN202010998324.4A Active CN111852386B (en) | 2020-09-22 | 2020-09-22 | Packer capable of bearing large torque, high temperature and high pressure |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE1451379A1 (en) * | 2014-11-17 | 2016-05-18 | Vanguard Oil Tools & Services Llc | Temperature activated zonal isolation packer |
| AU2015414102B2 (en) * | 2015-11-10 | 2021-04-22 | Halliburton Energy Services, Inc. | Wellbore isolation devices with degradable slips and slip bands |
| CN106121579B (en) * | 2016-09-06 | 2018-08-21 | 中国石油化工股份有限公司 | Bi-directional compression hydraulic setting is without anchoring packer and its application method |
| CN207620779U (en) * | 2017-12-08 | 2018-07-17 | 山东普瑞思德石油技术有限公司 | A kind of device for filling of giving up in advance |
| CN208184703U (en) * | 2018-05-15 | 2018-12-04 | 东营市瑞丰石油技术发展有限责任公司 | The packer of torque can be transmitted |
| CN209067155U (en) * | 2018-07-27 | 2019-07-05 | 中国石油天然气股份有限公司 | A kind of packer |
| CN209195338U (en) * | 2018-11-28 | 2019-08-02 | 齐齐哈尔亚盛机械制造有限公司 | Expanding step-by-step releasable flushing special type packer |
| CN209892153U (en) * | 2019-01-25 | 2020-01-03 | 中国石油化工股份有限公司 | Casing hydraulic packer |
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Effective date of registration: 20240317 Address after: 266000 South side of the east end of Xingfu Road, Lancun Town, Jimo District, Qingdao City, Shandong Province Patentee after: QINGDAO RUIXIN PETROLEUM EQUIPMENT MANUFACTURING Co.,Ltd. Country or region after: China Patentee after: DONGYING RUIFENG PETROLEUM TECHNOLOGY DEVELOPMENT CO.,LTD. Address before: 257000 No.5 Juzhou Road, Dongying City, Shandong Province Patentee before: DONGYING RUIFENG PETROLEUM TECHNOLOGY DEVELOPMENT CO.,LTD. Country or region before: China |
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