CN112554838A - High-temperature and high-pressure resistant packer - Google Patents
High-temperature and high-pressure resistant packer Download PDFInfo
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- CN112554838A CN112554838A CN202011453193.8A CN202011453193A CN112554838A CN 112554838 A CN112554838 A CN 112554838A CN 202011453193 A CN202011453193 A CN 202011453193A CN 112554838 A CN112554838 A CN 112554838A
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- 229920001971 elastomer Polymers 0.000 claims abstract description 71
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 230000001681 protective effect Effects 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 238000012856 packing Methods 0.000 claims description 18
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003345 natural gas Substances 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005465 channeling Effects 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000002343 natural gas well Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B33/127—Packers; Plugs with inflatable sleeve
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of oilfield natural gas exploitation, in particular to a high-temperature and high-pressure resistant packer which is firm to install, good in sealing performance, high-temperature resistant, high-pressure resistant and capable of improving use reliability; the sealing mechanism and the clamping mechanism are all sleeved at the upper half area and are arranged in the middle of the upper joint, the upper part is clamped through a positioning key, an upper slip and a first shear pin, the lower part is clamped through a lower slip, a second shear pin is arranged on the lower slip, the sealing mechanism comprises two sets of rubber cylinder fixing rings, two sets of fixed rubber cylinders, two sets of rubber separation blades and two sets of protective covers.
Description
Technical Field
The invention relates to the technical field of natural gas exploitation in oil fields, in particular to a high-temperature and high-pressure resistant packer.
Background
As is well known, the exploitation of deep oil wells (3000 meters deep underground crude oil) is difficult in all oil fields in China, the exploitation of natural gas (natural gas is generally 7000 meters deep wells) is more difficult, the formation pressure of the natural gas wells is up to 15000PSI (pressure differential program) and even higher due to the well depth, the temperature is up to about 200 ℃, and various corrosive toxic gases are contained, the high-pressure and high-temperature wells are self-spraying wells, the currently used packer cannot bear the high pressure, the phenomenon that the annular channeling of an oil pipe and a sleeve cannot be isolated is caused due to the fact that the rubber sleeve is not tightly sealed and the high-pressure gas directly erodes the rubber sleeve after the packer is seated, the high pressure is generated in the annular channeling of the oil pipe and the sleeve, the corrosive gas corrodes the sleeve on the upper part of the packer, great potential safety hazards are generated in well control, and.
The packer in the prior art in the market is generally a common rubber barrel, the rubber barrel is generally made of fluororubber and can only bear pressure within 10000PSI or lower, if the pressure exceeds 10000PSI, the rubber barrel can deform or be eroded by gas and cause leakage, and cannot keep a sealing state, and slips of the existing packer in the market are annular, an annular outer diameter milling groove is convenient to crack when in setting, and the slips are arranged on the upper and lower groups of the rubber barrel, so that the upper and lower groups of slips crack when the cone is pushed down and are clamped on the inner wall of the casing successively, the upper slips cannot move a position clamp tightly, the lower slips need to move a certain position in the direction of the upper slips to extrude the rubber barrel, so that the rubber barrel deforms and is tightly attached to the inner wall of the casing to seal an oil pipe and the annular space of the casing, and the lower annular slips can crack into four pieces when the cone pushes the rubber barrel does not completely deform, the rubber packing element can be pushed without deforming in place by the slip, the packer setting is not tight, the rubber packing element can deform and directly erode the rubber packing element by gas when the pressure is close to 10000PSI during the work, the leakage of the packer can be generated, and finally the failure is caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the high-temperature and high-pressure resistant packer which is firm in installation, good in sealing performance and capable of improving the use reliability.
The invention provides the following technical scheme: the utility model provides a high temperature and high pressure resistant packer, including the top connection, sealing mechanism, sit card mechanism, locking mechanism, the center tube, lower piston, thrust piston and lower clutch, the intercommunication is provided with two sets of biography pressure holes on the lower clutch, center tube and top connection below screw thread spiral shell dress, lower piston and thrust piston screw thread spiral shell dress, lower clutch and center tube screw thread spiral shell dress, sealing mechanism and the first regional cover of sitting card mechanism are all established at the top connection middle part, the card is sat including the navigation key in upper portion, go up slips and first shear pin, the card is sat including slips down in the lower part, be provided with the second shear pin on the slips down, sealing mechanism includes two sets of solid fixed rings of packing element, two sets of fixed packing elements, two sets of rubber separation blades and two sets of guard shields, go up the slips and be the ascending full-tooth slips of integrative annular angle, the slips.
Preferably, sit card mechanism and include that upper portion sits the card and the card is sat to the lower part, the card is sat on upper portion still includes fixing bolt and last centrum, the navigation key passes through fixing bolt to be fixed on last connector, it establishes at the top connection middle part all to cover with last centrum to go up the slips, it installs on last connector through first shear pin to go up the centrum, it installs on last connector through first shear pin to go up the slips, the card is sat including lower centrum and spring leaf to the lower part, the slips bottom is provided with the slip cover down, the slips passes through slip cover and upper joint connection down, the spring leaf is fixed between slip cover and the slips down.
Preferably, sealing mechanism still includes well packing element, two sets of spacer rings, two sets of limit packing elements and two sets of packing element circles, the guard shield that is located the top, the rubber catch that is located the top, the fixed packing element that is located the top, the packing element circle that is located the top, the solid fixed ring of packing element that is located the top, the limit packing element that is located the top, the spacer ring that is located the top, well packing element, the spacer ring that is located the below, the limit packing element that is located the below, the solid fixed ring of packing element that is located the below, the fixed packing element that is located the below, the rubber catch that is located the below and the guard shield that is located the below from the top down overlap in proper order and establish.
Preferably, the locking mechanism further comprises a connecting sleeve and a locking sleeve, the connecting sleeve is connected with the upper connector, the connecting sleeve is connected with the slip sleeve, the locking sleeve and the locking ring are locked and clamped, the locking ring is connected with the upper connector, and the locking sleeve is connected with the thrust piston.
Preferably, the top end of the upper joint is provided with a connecting thread which is a left-handed rectangular thread.
Preferably, the piston further comprises a third shear pin, and the lower joint is connected with the lower piston through the third shear pin.
Preferably, the locking ring is designed with a reverse saw tooth thread.
Preferably, two groups of gaskets and two groups of O-shaped rings are arranged in the sealing groove of the lower piston in a threaded mode.
Compared with the prior art, the invention provides a high-temperature and high-pressure resistant packer which has the following beneficial effects:
1. by arranging two different clamping mechanisms, namely an upper slip is an integral annular angle upward full-tooth slip, the upper slip is firstly cracked when a cone is pushed down and clamped on the inner wall of a sleeve when the packer is set, the upper slip cannot move and be clamped tightly, a lower slip is a piece type independent downward angle tooth slip, the lower slip freely moves upward to push a packer sealing mechanism to be completely deformed and attached to the inner wall of the sleeve under the pushing of a lower piston and a thrust piston, and the setting is reliable and firm;
2. the upper and lower double-clamping mechanisms are used for ensuring that the product is reliably anchored after being set, the installation is firm, the lower part of the packer has strong suspension capacity, and the packer is suitable for high-temperature and high-pressure working conditions and is suitable for different well completion processes;
3. compared with other permanent packers of the same type, the permanent packer has the greatest difference that a sealing mechanism assembly is redesigned, so that the permanent packer can bear higher temperature and pressure of the lower cavity annulus, and meanwhile, the sealing combination formed by combining the components together ensures that the permanent packer has stronger pressure resistance, better sealing performance, compact integral structure and larger application range, and can be applied to complex well conditions such as a highly-deviated well;
4. the card sitting mechanism is matched with the sealing mechanism for use, is high temperature resistant and high pressure resistant, and can bear the pressure of 15000PSI and the temperature of about 200 ℃;
5. the product can be directly connected with an oil pipe and set down to a preset depth to realize one-time seat sealing, the well completion operation time is shortened, the annular sealing of an oil pipe sleeve is realized, the stratum pollution can be reduced after the well completion by using the product, the yield of an oil-gas well is improved, during the well repair operation, the product and a pipe column at the lower part are not required to be lifted out, the lower part of the product is temporarily blocked under the matching of a matched tool, the matched tool is lifted out to rapidly recover the productivity of the oil-gas well, and the packer is a permanent packer.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of an upper card seating portion of the card seating mechanism;
FIG. 3 is a schematic view of a card sitting mechanism;
FIG. 4 is a schematic structural view of a sealing mechanism;
FIG. 5 is a schematic structural view of the locking mechanism;
FIG. 6 is a schematic structural view of the connection of the upper joint, the central tube, the lower piston, the thrust piston and the lower joint;
in the figure: 1. an upper joint; 2. a central tube; 3. a lower piston; 4. a thrust piston; 5. a lower joint; 6. a pressure transfer hole; 7. a positioning key; 8. fixing the bolt; 9. the slips are put on; 10. a superior vertebral body; 11. a first shear pin; 12. A slip is put down; 13. the inferior vertebral body; 14. a spring plate; 15. a slip sleeve; 16. a second shear pin; 17. a middle rubber cylinder; 18. a spacer ring; 19. an edge rubber cylinder; 20. a rubber cylinder fixing ring; 21. a rubber cylinder ring; 22. fixing the rubber cylinder; 23. A rubber baffle plate; 24. a shield; 25. connecting sleeves; 26. a lock sleeve; 27. a locking ring; 28. a third shear pin; 29. A gasket; 30. an "O" shaped ring.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
Referring to fig. 1-6, the high temperature and high pressure resistant packer comprises an upper joint 1, a sealing mechanism, a clamping mechanism, a locking mechanism, a central tube 2, a lower piston 3, a thrust piston 4 and a lower joint 5, wherein the lower joint 5 is provided with two groups of pressure transfer holes 6 in a communicating manner, the central tube 2 is screwed with the lower part of the upper joint 1 through threads, the lower piston 3 is screwed with the thrust piston 4 through threads, the lower joint 5 is screwed with the central tube 2 through threads, the upper half area of the sealing mechanism and the clamping mechanism is sleeved in the middle of the upper joint 1, the upper clamping mechanism comprises a positioning key 7, an upper slip 9 and a first shear pin 11, the lower clamping mechanism comprises a lower slip 12, the lower slip 12 is provided with a second shear pin 16, and the sealing mechanism comprises two groups of rubber cylinder fixing rings 20, two groups of fixing rubber cylinders 22, two groups of rubber blocking sheets 23 and two groups of shields 24; the two different clamping mechanisms are characterized in that an upper slip 9 is an integral annular angle upward full-tooth slip, a lower slip 12 is a sheet type independent downward angle-tooth slip, the upper slip 9 is annularly split into block sheet-shaped slips after being clamped, the bearing pressure is very high, the upper slip 9 adopts an open full-tooth slip, the lower clamping relative pressure is lower, the lower slip 12 adopts a sheet-type slip, the two slips freely move in the clamping process, the upper slip 9 and the lower slip 12 are rapidly spread under the minimum pressure after being respectively sheared by a first shear pin 11 and a second shear pin 16, the lower slip 12 has the biggest characteristic that the thrust of a lower piston 3 is larger, the force for pushing a combined sealing rubber cylinder is larger when the slips are upwardly displaced, the teeth of the lower slip 12 are downward directions and cannot be withdrawn, the risk that the packer is not firmly clamped is guaranteed, the upper and lower double-clamping mechanisms are adopted, the product is reliably anchored after being sealed, the installation is firm, the lower portion of the packer has strong suspension capacity, the packer is suitable for high-temperature and high-pressure working conditions, and compared with other permanent packers of the same type according to different well completion processes, the largest difference lies in redesigning a sealing mechanism assembly, the sealing mechanism assembly comprises a fixed rubber cylinder 22 formed by injecting rubber and a steel wire mesh together and a rubber cylinder fixing ring 20 made of high polymer materials, so that the sealing mechanism assembly can bear higher temperature (200 ℃) and pressure (15000PSi) of a lower cavity, a protective cover 24, a rubber blocking sheet 23 and the fixed rubber cylinder 22 are provided with the steel wire mesh and are made of polytetrafluoroethylene materials as same as the rubber cylinder fixing ring 20, the combined sealing combination formed by combining the rubber cylinder fixing ring and the rubber cylinder fixing ring can enable the combined sealing outer diameter to be tightly attached to the inner wall of a casing after the packer is seated, one layer of the rubber cylinder fixing ring can prevent various high-pressure gases and, the packer is widely applied to vertical wells, large-value inclined wells and the like, has a large application range, can be applied to complex well conditions including large-inclination wells and the like, can be directly connected with an oil pipe to be set at a preset depth to realize one-time seat sealing, reduces the time of well completion operation, realizes annular sealing of an oil pipe sleeve, can reduce stratum pollution after the completion of the well by using the packer, improves the yield of an oil-gas well, and is not required to be taken out when a well is repaired, the lower part of the packer can be temporarily plugged under the matching of a matched tool, and the matched tool can be taken out to rapidly recover the productivity of the oil-gas well.
The clamping mechanism comprises an upper clamping block and a lower clamping block, the upper clamping block further comprises a fixing bolt 8 and an upper cone 10, a positioning key 7 is fixed on an upper connector 1 through the fixing bolt 8, an upper slip 9 and the upper cone 10 are both sleeved in the middle of the upper connector 1, the upper cone 10 is mounted on the upper connector 1 through a first shear pin 11, the upper slip 9 is mounted in a groove of the positioning key 7, the upper cone 10 is mounted on the upper connector 1 through the first shear pin 11, the lower clamping block comprises a lower cone 13 and a spring piece 14, a slip sleeve 15 is arranged at the bottom end of the lower slip 12, the lower slip 12 is connected with the upper connector 1 through the slip sleeve 15, and the spring piece 14 is fixed between the slip sleeve 15 and the lower slip 12; the upper positioning key 7 fixes the upper slip 9 to prevent the upper slip 9 from rotating, and the lower slip 12 is fixed by the spring piece 14 to prevent the lower slip 12 from shaking up, down, left or right.
The sealing mechanism further comprises a middle rubber barrel 17, two groups of spacing rings 18, two groups of side rubber barrels 19 and two groups of rubber barrel rings 21, a protective cover 24 positioned above, a rubber baffle 23 positioned above, a fixed rubber barrel 22 positioned above, a rubber barrel ring 21 positioned above, a rubber barrel fixing ring 20 positioned above, a side rubber barrel 19 positioned above, a spacing ring 18 positioned above, a middle rubber barrel 17, a spacing ring 18 positioned below, a side rubber barrel 19 positioned below, a rubber barrel fixing ring 20 positioned below, a rubber barrel ring 21 positioned below, a fixed rubber barrel 22 positioned below, a rubber baffle 23 positioned below and a protective cover 24 positioned below are sequentially sleeved in the middle of the upper joint 1 from top to bottom; the sealing combination formed by combining the sealing mechanism components can ensure that the outer diameters of the packer are tightly attached to the inner wall of the casing after the packer is set, and the packer can prevent various high-pressure gases and liquids in the well layer by layer and has stronger pressure resistance.
The locking mechanism further comprises a connecting sleeve 25 and a locking sleeve 26, the connecting sleeve 25 is connected with the upper connector 1, the connecting sleeve 25 is connected with the slip sleeve 15, the locking sleeve 26 and the locking ring 27 are locked, the locking ring 27 is connected with the upper connector 1, and the locking sleeve 26 is connected with the thrust piston 4; the inside and outside of the lock ring 27 are in a sawtooth shape, the lock ring 27 can only move upwards and cannot move backwards when the card is seated, two pressure transmission holes are designed on the thrust of the card, the thrust of the card is seated greatly, and the card is seated firmly.
The top end of the upper joint 1 is provided with a connecting thread which is a left-handed rectangular thread; through changing the connecting thread of the upper joint 1 and then carrying out high-precision processing on the inner cavity of the upper joint, the inner cavity of the upper joint can be made into a sealing barrel, repeated running and recovery of the anchoring seal of a matched tool can be supported, and two runs of running are realized by repeated running and recovery of the anchoring seal, so that the requirements of different well completion processes are met.
And a third shear pin 28 is further included, and the lower joint 5 is connected with the lower piston 3 through the third shear pin 28.
The locking ring 27 is designed with reverse saw-tooth threads; when the saw-shaped teeth are fixed, the saw teeth of the saw-shaped teeth are upward, the saw teeth of the saw-shaped teeth are downward, the two saw teeth are combined together, and the saw teeth can move upward and cannot move backward under the.
Two groups of gaskets 29 and two groups of O-shaped rings 30 are arranged in the sealing groove of the lower piston 3 in a threaded manner; the two groups of gaskets 29 and the two groups of O-shaped rings 30 are respectively combined for use and play a role in high-pressure sealing.
In conclusion, when the stable packer is used, the upper joint 1 is connected with an oil pipe through a thread structure, the lower joint 5 is connected with the oil pipe and other tools, the connected packer is lowered to a preset depth of an oil well, the lower oil pipe is plugged by a special tool, then the lower oil pipe is pressurized by 16-20MPa from the inner cavity of the upper part of the packer, pressure acts on the thrust piston 4 and the lower piston 3 through the pressure transmission hole 6, the lower piston 3 cuts the third shear pin 28 when running, the lower piston 3 starts to move upwards under the action of the pressure, the thrust piston 4, the locking mechanism, the connecting sleeve 25, the slip sleeve 15, the slips, the lower cone and the sealing mechanism are continuously pushed, the first shear pin 11 is cut at the same time, the upper cone moves upwards to extrude the upper slips 9, the upper slips 9 bursts and bursts a seat clip, the upper slips 9 blocks the sleeve to prevent the packer from moving upwards in the working process, the casing is divided into an upper cavity and a lower cavity, the lower slip 12 is expanded to clamp the casing, the downward displacement of the packer in the working process is prevented, the pressurization is continued to 25MPa at the moment, the positioning and the effective separation of the upper slip 9 and the lower slip 12 from a sealing mechanism are ensured, the pressure of the inner cavity of the packer is released to zero, all parts moving upwards at the moment are locked by a locking ring 27, the parts moving upwards are ensured not to return due to the disappearance of the pressure, after the seat sealing is completed, the plugging of the lower oil pipe is removed, the annular spaces of the upper cavity and the lower cavity of the packer are respectively pressurized, the tightness test is carried out on the rubber sleeve, and after the packer is verified to be qualified, the packer enters a.
It will be understood by those skilled in the art that all of the above components may be mounted, connected or disposed by welding, riveting or other common mechanical means, and unless otherwise specified, the terms "upper, lower, left, right, front, back, inner, outer, and vertical and horizontal" are used in the terminology as being "including" and "including" merely indicating the orientation of the term in conventional use or being "including" and "including" as well as "including" and "including" as used herein, and are not intended to limit the scope of the terminology, and the terms "including", "including" and "including" or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements not only those elements but also other elements not expressly listed, or to include elements inherent in such processes, methods, articles, or apparatus, the terms "a" and "an" should be taken to mean "at least one" or "one or more," i.e., in one embodiment, the number of an element can be one, and in another embodiment, the number of the element can be more than one, and the terms "a" and "an" should not be taken to limit the number.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides a high temperature and high pressure resistant packer which characterized in that: top connection (1), sealing mechanism, seat card mechanism, locking mechanism, center tube (2), lower piston (3), thrust piston (4) and lower clutch (5), be provided with two sets of biography pressure holes (6) on lower clutch (5), center tube (2) are connected with top connection (1) below, and lower piston (3) are connected with thrust piston (4), and lower clutch (5) are connected with center tube (2), and sealing mechanism and seat card mechanism first region all establish at top connection (1) middle part, the card is sat including navigation key (7), last slips (9) and first shear pin (11) in upper portion, and the card is sat to the lower part including slips (12) down, be provided with second shear pin (16) down on slips (12), sealing mechanism includes solid fixed ring of packing element (20), fixed packing element (22), rubber separation blade (23) and guard shield (24).
2. The high-temperature and high-pressure resistant packer of claim 1, wherein: sit card mechanism and include that upper portion sits the card and the card is sat to the lower part, the card is sat on upper portion still includes fixing bolt (8) and last centrum (10), positioning key (7) are fixed on top connection (1) through fixing bolt (8), it all overlaps with last centrum (10) and establishes in top connection (1) middle part to go up slips (9), it installs on top connection (1) through first shear pin (11) to go up centrum (10), it installs in the slot of positioning key (7) to go up slips (9), it installs on top connection (1) through first shear pin (11) to go up centrum (10), the card is sat including centrum (13) and spring leaf (14) down to the lower part, slips (12) bottom is provided with slips cover (15) down, slips (12) are connected with top connection (1) through slips cover (15) down, spring leaf (14) are fixed between slips cover (15) and slips (12) down.
3. The high-temperature and high-pressure resistant packer as claimed in claim 2, wherein: the sealing mechanism also comprises a middle rubber cylinder (17), two groups of spacer rings (18), two groups of side rubber cylinders (19) and two groups of rubber cylinder rings (21), wherein two groups of rubber cylinder fixing rings (20), two groups of fixed rubber cylinders (22), two groups of rubber retaining sheets (23) and two groups of protective covers (24) are arranged, the rubber sleeve comprises a protective cover (24) positioned above, a rubber blocking piece (23) positioned above, a fixed rubber sleeve (22) positioned above, a rubber sleeve ring (21) positioned above, a rubber sleeve fixing ring (20) positioned above, a side rubber sleeve (19) positioned above, a spacer ring (18) positioned above, a middle rubber sleeve (17), a spacer ring (18) positioned below, a side rubber sleeve (19) positioned below, a rubber sleeve fixing ring (20) positioned below, a rubber sleeve ring (21) positioned below, a fixed rubber sleeve (22) positioned below, a rubber blocking piece (23) positioned below and a protective cover (24) positioned below, wherein the middle part of the upper joint (1) is sequentially sleeved from top to bottom.
4. A high temperature and high pressure resistant packer as claimed in claim 3, wherein: the locking mechanism further comprises a connecting sleeve (25) and a locking sleeve (26), the connecting sleeve (25) is connected with the upper connector (1), the connecting sleeve (25) is connected with the slip sleeve (15), the locking sleeve (26) and the locking ring (27) are locked, the locking ring (27) is connected with the upper connector (1), and the locking sleeve (26) is connected with the thrust piston (4).
5. The high temperature and high pressure resistant packer of claim 4, wherein: the top end of the upper joint (1) is provided with a connecting thread which is a left-handed rectangular thread.
6. The high temperature and high pressure resistant packer of claim 5, wherein: the lower joint is characterized by further comprising a third shear pin (28), and the lower joint (5) is connected with the lower piston (3) through the third shear pin (28).
7. The high temperature and high pressure resistant packer of claim 6, wherein: the locking ring (27) is designed with reverse saw-tooth threads.
8. The high temperature and high pressure resistant packer of claim 7, wherein: two groups of gaskets (29) and two groups of O-shaped rings (30) are arranged in the sealing groove of the lower piston (3) in a threaded manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011453193.8A CN112554838B (en) | 2020-12-11 | 2020-12-11 | High-temperature and high-pressure resistant packer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011453193.8A CN112554838B (en) | 2020-12-11 | 2020-12-11 | High-temperature and high-pressure resistant packer |
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| Publication Number | Publication Date |
|---|---|
| CN112554838A true CN112554838A (en) | 2021-03-26 |
| CN112554838B CN112554838B (en) | 2023-03-31 |
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| CN202011453193.8A Active CN112554838B (en) | 2020-12-11 | 2020-12-11 | High-temperature and high-pressure resistant packer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153207A (en) * | 2021-06-11 | 2021-07-23 | 西南石油大学 | Packer driven by gas and packer setting method |
| CN115370316A (en) * | 2022-09-01 | 2022-11-22 | 惟其信石油机械(天津)有限公司 | Double-anchoring high-pressure packer |
| CN115370317A (en) * | 2022-09-21 | 2022-11-22 | 惟其信石油机械(天津)有限公司 | High-temperature high-pressure packer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4296806A (en) * | 1979-10-05 | 1981-10-27 | Otis Engineering Corporation | High temperature well packer |
| US20120061105A1 (en) * | 2010-09-14 | 2012-03-15 | Halliburton Energy Services, Inc. | Single piece packer extrusion limiter ring |
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| CN214403513U (en) * | 2020-12-11 | 2021-10-15 | 惟其信石油机械(天津)有限公司 | High-temperature and high-pressure resistant packer |
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| US4296806A (en) * | 1979-10-05 | 1981-10-27 | Otis Engineering Corporation | High temperature well packer |
| US20120061105A1 (en) * | 2010-09-14 | 2012-03-15 | Halliburton Energy Services, Inc. | Single piece packer extrusion limiter ring |
| CN208669264U (en) * | 2018-08-06 | 2019-03-29 | 惟其信石油机械(天津)有限公司 | A kind of recyclable packer of big orifice |
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| CN211549642U (en) * | 2019-12-23 | 2020-09-22 | 惟其信石油机械(天津)有限公司 | High pressure resistant packer for setting on casing |
| CN214403513U (en) * | 2020-12-11 | 2021-10-15 | 惟其信石油机械(天津)有限公司 | High-temperature and high-pressure resistant packer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153207A (en) * | 2021-06-11 | 2021-07-23 | 西南石油大学 | Packer driven by gas and packer setting method |
| CN115370316A (en) * | 2022-09-01 | 2022-11-22 | 惟其信石油机械(天津)有限公司 | Double-anchoring high-pressure packer |
| CN115370316B (en) * | 2022-09-01 | 2024-05-28 | 惟其信石油机械(天津)有限公司 | Double-anchoring high-pressure packer |
| CN115370317A (en) * | 2022-09-21 | 2022-11-22 | 惟其信石油机械(天津)有限公司 | High-temperature high-pressure packer |
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