CN113153206A - Down-hole wedged packer - Google Patents

Down-hole wedged packer Download PDF

Info

Publication number
CN113153206A
CN113153206A CN202110414172.3A CN202110414172A CN113153206A CN 113153206 A CN113153206 A CN 113153206A CN 202110414172 A CN202110414172 A CN 202110414172A CN 113153206 A CN113153206 A CN 113153206A
Authority
CN
China
Prior art keywords
fixedly connected
scraper
central tube
packer
movably connected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202110414172.3A
Other languages
Chinese (zh)
Inventor
张军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202110414172.3A priority Critical patent/CN113153206A/en
Publication of CN113153206A publication Critical patent/CN113153206A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • E21B33/127—Packers; Plugs with inflatable sleeve
    • 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
    • E21B33/127—Packers; Plugs with inflatable sleeve
    • E21B33/1277—Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve
    • 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
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • E21B37/02—Scrapers specially adapted therefor
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/20—Displacing by water

Abstract

The invention relates to the technical field of oilfield water injection, and discloses a wedge-type packer for underground use, which comprises a central tube and a lower connector, wherein the top of the central tube is movably connected with the upper connector, the outer ring at the top end of the central tube is movably connected with a sealing sleeve, the middle part of the inner cavity of the sealing sleeve is provided with a limiting ring, and the outer ring of the central tube is fixedly connected with a compression ring. This is in pit with wedging formula packer, setting through the scraper, when this packer removed suitable position department, the user pressed the clamp plate downwards with other equipment, the clamp plate drives the push rod and moves down, the other end of push rod outwards promotes the scraper, scraper and sword groove separation, and the scraper can contact with the wall of a well, rotate the top connection, the top connection drives the clamp plate and rotates, the clamp plate drives the scraper through the push rod and rotates, the wall of a well of a seat position department can be scraped to the scraper, make the packing element can closely laminate with the wall of a well, improve the leakproofness of this packer.

Description

Down-hole wedged packer
Technical Field
The invention relates to the technical field of oilfield water injection, in particular to a wedge-type packer for underground.
Background
The packer is a well tool commonly used in oil field downhole operation, and the structure of the packer generally comprises a setting mechanism, a rubber cylinder component and a central tube, wherein a setting piston is arranged in the setting mechanism, a setting hole is correspondingly arranged on the central tube corresponding to the setting piston, when the packer is used, pressure is applied to the central tube, the pressure is transmitted to a pressure bearing surface of the setting piston through the setting hole, so that the setting piston is pushed to move, the setting mechanism is started, acting force is further applied to the rubber cylinder in the rubber cylinder component, and the rubber cylinder deforms and rises outwards under the action of the acting force, so that the packing effect of the packer is completed.
However, after the rubber cylinder of the packer is put into the well, the rubber cylinder is rubbed and scraped with the well wall in the process of lowering thousands of meters or even thousands of meters, so that early damage is formed, and when liquid enters the rubber cylinder and reaches a certain pressure, the rubber cylinder is easy to break; in addition, the well wall of the rubber cylinder part is irregular, and the rubber cylinder is difficult to realize good sealing due to expansion.
Disclosure of Invention
Aiming at the defects of the existing downhole wedged packer, the invention provides the downhole wedged packer which has a protection structure outside a rubber cylinder, can prevent the rubber cylinder from rubbing with a well wall in the process of moving in a well, prolongs the service life of the rubber cylinder, can scrape the well wall at a setting part, enables the rubber cylinder to be tightly attached to the well wall, improves the sealing performance of the packer, and the like, and solves the problems in the background technology.
The invention provides the following technical scheme: a wedged packer for underground use comprises a central tube and a lower joint, wherein the top of the central tube is movably connected with an upper joint, the outer ring of the top end of the central tube is movably connected with a sealing sleeve, the middle part of the inner cavity of the sealing sleeve is provided with a limiting ring, the outer ring of the central tube is fixedly connected with a pressing ring, the pressing ring is positioned above the limiting ring, the central tube is movably connected with the inner cavity of the limiting ring, the bottom of the sealing sleeve is fixedly connected with a rubber tube, the bottom end of the rubber tube is fixedly connected with the central tube, the top end of the rubber tube is movably connected with the central tube, the bottom end of the central tube is movably connected with a cone, the top end of the lower joint is fixedly connected with a slip, the slip is matched with the bottom end of the cone, the outer ring of the top end of the central tube is uniformly and fixedly connected with a connecting plate, the other end of the connecting plate is fixedly connected with one end of a pull rope, the top of the sealing sleeve is uniformly and fixedly connected with a supporting rod, the outer side of the other end of the supporting rod is movably connected with a spool, the pull rope is wound on the spool, the other end of the pull rope is fixedly connected with the top of the protective sleeve, the rubber cylinder is positioned in the inner cavity of the protective sleeve, the top of the protective sleeve is uniformly and fixedly connected with a first spring, the other end of the first spring is fixedly connected with the outer side of the top end of the sealing sleeve, one side of the protective sleeve is provided with a knife groove, a scraper is clamped in the inner cavity of the knife groove, the inner side of the top end of the scraper is fixedly connected with a telescopic pipe, the top of the scraper is movably connected with a push rod, one side of the upper joint is provided with a movable groove, the other end of the telescopic pipe is movably connected with the inner cavity of the movable groove, the other end of the push rod extends into the inner cavity of the upper joint through the movable groove, and the inner cavity of the upper joint is movably connected with a pressing plate, the other end of the push rod is movably connected with the bottom of the pressing plate.
Preferably, the bottom of the upper joint is fixedly connected with a connecting pipe, and the connecting pipe is movably connected with the top end of the inner cavity of the central pipe.
Preferably, the telescopic pipe comprises an inner pipe and an outer pipe, the inner pipe is movably connected in the inner cavity of the outer pipe, a second spring is fixedly connected in the middle of the inner cavity of the inner pipe, and the other end of the second spring is fixedly connected with the inner side of the inner cavity of the outer pipe.
Preferably, the middle part of push rod one end is equipped with the recess, the middle part fixedly connected with connecting block at scraper top, the equal swing joint in both ends of connecting block has the dwang, the other end of dwang and the inner chamber of recess be fixed connection mutually, the both ends of connecting block all with the one end of torsional spring be fixed connection mutually, the other end of torsional spring and the inner chamber of recess be fixed connection mutually, and the dwang is located the inner chamber of torsional spring, dwang and the inner chamber looks swing joint of torsional spring.
Preferably, the material of the protective sleeve is metal, and the outer surface of the protective sleeve is coated with an anti-corrosion layer.
Compared with the existing downhole wedged packer, the invention has the following beneficial effects:
1. this be in pit with wedging formula packer, setting through spacing ring and clamping ring, the user pushes down when connecting, it takes the center tube downstream to go up to connect, the center tube drives the clamping ring downstream, the center tube can drive the connecting plate downstream of looks fixed connection with it at the in-process of downstream, the connecting plate stimulates the one end of the stay cord of looks fixed connection with it downwards, the other end of stay cord stimulates the protective sheath upwards under the effect of I-shaped wheel, the protective sheath can be gradually separate with the packing element, and when clamping ring and spacing ring contacted, the bottom of protective sheath removed to the top of packing element, can not influence the compression of packing element.
2. This is in pit with wedging formula packer, setting through the scraper, when this packer removed suitable position department, the user pressed the clamp plate downwards with other equipment, the clamp plate drives the push rod and moves down, the other end of push rod outwards promotes the scraper, scraper and sword groove separation, and the scraper can contact with the wall of a well, rotate the top connection, the top connection drives the clamp plate and rotates, the clamp plate drives the scraper through the push rod and rotates, the wall of a well of a seat position department can be scraped to the scraper, make the packing element can closely laminate with the wall of a well, improve the leakproofness of this packer.
Drawings
FIG. 1 is a schematic front view of the structure of the present invention;
FIG. 2 is a schematic side view of the present invention shown in FIG. 1;
FIG. 3 is an exploded view of the present invention shown in FIG. 1;
FIG. 4 is a schematic view of the torsion spring of the present invention.
In the figure: 1. a central tube; 2. a lower joint; 3. sealing sleeves; 4. a rubber cylinder; 5. an upper joint; 6. pressing a plate; 7. a torsion spring; 8. a push rod; 9. a telescopic pipe; 10. a connecting pipe; 11. a scraper; 12. a connecting plate; 13. a spool; 14. pulling a rope; 15. a first spring; 16. a protective sleeve; 17. a support bar; 18. a cone.
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, 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.
Referring to fig. 1-4, a wedge-type packer for downhole use comprises a central tube 1 and a lower joint 2, wherein the top of the central tube 1 is movably connected with an upper joint 5, the outer ring of the top end of the central tube 1 is movably connected with a sealing sleeve 3, the middle part of the inner cavity of the sealing sleeve 3 is provided with a limiting ring, the outer ring of the central tube 1 is fixedly connected with a pressing ring, the pressing ring is positioned above the limiting ring, the central tube 1 is movably connected with the inner cavity of the limiting ring, the bottom of the sealing sleeve 3 is fixedly connected with a rubber tube 4, the bottom of the rubber tube 4 is fixedly connected with the central tube 1, the top of the rubber tube 4 is movably connected with the central tube 1, the bottom of the central tube 1 is movably connected with a cone 18, the top of the lower joint 2 is fixedly connected with a slip, the slip is adapted to the bottom of the cone 18, the outer ring of the top of the central tube 1 is uniformly and fixedly connected with a connecting plate 12, and the other end of the connecting plate 12 is fixedly connected with one end of a pulling rope 14, the top of the sealing sleeve 3 is uniformly and fixedly connected with a supporting rod 17, the outer side of the other end of the supporting rod 17 is movably connected with a spool 13, a pull rope 14 is wound on the spool 13, the other end of the pull rope 14 is fixedly connected with the top of a protective sleeve 16, a rubber tube 4 is positioned in the inner cavity of the protective sleeve 16, through the arrangement of a limiting ring and a pressing ring, when a user presses the upper joint 5 downwards, the upper joint 5 drives the central tube 1 to move downwards, the central tube 1 drives the pressing ring to move downwards, the central tube 1 can drive the connecting plate 12 fixedly connected with the central tube to move downwards in the downward moving process, the connecting plate 12 downwards pulls one end of the pull rope 14 fixedly connected with the central tube, the other end of the pull rope 14 upwards pulls the protective sleeve 16 under the action of the spool 13, the protective sleeve 16 can be gradually separated from the rubber tube 4, and when the pressing ring is contacted with the limiting ring, the bottom of the protective sleeve 16 moves to the upper part of the rubber tube 4, the compression of the rubber barrel 4 cannot be influenced, when the central tube 1 continues to move upwards, the central tube 1 drives the sealing sleeve 3 fixed with the limiting ring to move downwards through the pressing ring, the sealing sleeve 3 can downwards extrude the rubber barrel 4, the rubber barrel 4 can be compressed, the packer can seal a well, when the rubber barrel 4 is contacted with the inner wall of the well, the cone 18 is clamped with the slip, the packer completes the seat sealing, the use of the packer is convenient, the top of the protective sleeve 16 is uniformly and fixedly connected with the first spring 15, the other end of the first spring 15 is fixedly connected with the outer side of the top end of the sealing sleeve 3, through the arrangement of the first spring 15, the resilience force of the first spring 15 can enable the protective sleeve 16 to move to the initial position, the recovery of the packer is convenient, one side of the protective sleeve 16 is provided with a cutter groove, a scraper 11 is clamped in the inner cavity of the cutter groove, and the inner side of the top end of the scraper 11 is fixedly connected with a telescopic pipe 9, the top of the scraper 11 is movably connected with a push rod 8, one side of the upper joint 5 is provided with a movable groove, the other end of the extension tube 9 is movably connected with the inner cavity of the movable groove, the other end of the push rod 8 extends into the inner cavity of the upper joint 5 through the movable groove, the inner cavity of the upper joint 5 is movably connected with a pressing plate 6, the other end of the push rod 8 is movably connected with the bottom of the pressing plate 6, through the arrangement of the scraper 11, when the packer moves to a proper position, a user presses the pressing plate 6 downwards by other equipment, the pressing plate 6 drives the push rod 8 to move downwards, the other end of the push rod 8 pushes the scraper 11 outwards, the scraper 11 is separated from the cutter groove, the scraper 11 can be contacted with the well wall, the upper joint 5 is rotated, the upper joint 5 drives the pressing plate 6 to rotate, the pressing plate 6 drives the scraper 11 to rotate through the push rod 8, the scraper 11 can scrape the well wall at the setting position, so that the rubber cylinder 4 can be tightly attached to the well wall, the sealing performance of the packer is improved.
Wherein, the bottom of top connection 5 is fixedly connected with connecting pipe 10, and connecting pipe 10 is swing joint mutually with the top of center tube 1 inner chamber.
Wherein, flexible pipe 9 includes inner tube and outer tube, and swing joint has the inner tube in the inner chamber of outer tube, and the middle part fixedly connected with spring two of inner tube inner chamber, and the other end of spring two and the inboard looks fixed connection of outer tube inner chamber can make scraper 11 remove in horizontal position department through the setting of flexible pipe 9, are convenient for scraper 11 to scrape the wall of a well and scraper 11 again with the sword groove looks joint.
Wherein, the middle part of 8 one ends of push rod is equipped with the recess, the middle part fixedly connected with connecting block at scraper 11 top, the equal swing joint in both ends of connecting block has the dwang, the other end of dwang and the inner chamber looks fixed connection of recess, the both ends of connecting block all with torsional spring 7's one end looks fixed connection, torsional spring 7's the other end and the inner chamber looks fixed connection of recess, and the dwang is located torsional spring 7's inner chamber, dwang and torsional spring 7's inner chamber looks swing joint, setting through torsional spring 7, when stopping to press down clamp plate 6, torsional spring 7's resilience can make clamp plate 6 get back to initial position department, spring two and torsional spring 7's cooperation is used and can be made scraper 11 and sword groove rephase joint, it moves up to be convenient for protective sheath 16 to drive scraper 11, scraper 11 can not influence the compression of a rubber section of thick bamboo.
The material of the protective sleeve 16 is metal, and the outer surface of the protective sleeve 16 is coated with an anti-corrosion layer, so that the wear resistance and the corrosion resistance of the protective sleeve are improved, and the protective sleeve 16 is convenient to use.
The working principle is as follows: when the packer is used, after the packer is lowered to a proper position, a user presses the pressing plate 6 downwards, the pressing plate 6 drives the push rod 8 to move downwards, the other end of the push rod 8 pushes the scraper 11 outwards, the scraper 11 is separated from the cutter groove, the scraper 11 can be in contact with the well wall, the upper joint 5 is rotated, the upper joint 5 drives the pressing plate 6 to rotate, the pressing plate 6 drives the scraper 11 to rotate through the push rod 8, the scraper 11 can scrape the well wall at the setting position, the rubber barrel 4 can be tightly attached to the well wall, the sealing performance of the packer is improved, after the well wall is scraped, the user stops pressing the pressing plate 6, the scraper 11 is clamped with the cutter groove again through the matching use of the spring II and the torsion spring 7, the user presses the upper joint 5 downwards, the upper joint 5 drives the central pipe 1 to move downwards, the pressing ring 1 drives the pressing ring to move downwards, the central pipe 1 can drive the connecting plate 12 fixedly connected with the central pipe to move downwards in the downward moving process, the connecting plate 12 pulls one end of a pull rope 14 fixedly connected with the connecting plate downwards, the other end of the pull rope 14 pulls a protective sleeve 16 upwards under the action of an I-shaped wheel 13, the protective sleeve 16 can be gradually separated from the rubber tube 4, when the compression ring is contacted with the limiting ring, the bottom of the protective sleeve 16 moves to the position above the rubber tube 4, the compression of the rubber tube 4 cannot be influenced, when the central tube 1 continues to move upwards, the central tube 1 drives a sealing sleeve 3 fixed with the limiting ring to move downwards through the compression ring, the sealing sleeve 3 can downwards extrude the rubber tube 4, the rubber tube 4 can be compressed, the packer can seal a well, when the rubber tube 4 is contacted with the inner wall of the well, a cone 18 is clamped with a slip, the packer completes the setting, the packer is convenient to use, when the packer is unpacked, the protective sleeve 16 can move to an initial position through the resilience force of a spring one 15, the recovery of the packer is convenient.

Claims (5)

1. A downhole wedge packer comprising a base pipe (1) and a lower joint (2), characterized in that: the top of the central tube (1) is movably connected with an upper joint (5), the outer ring of the top of the central tube (1) is movably connected with a sealing sleeve (3), the middle part of the inner cavity of the sealing sleeve (3) is provided with a limiting ring, the outer ring of the central tube (1) is fixedly connected with a pressing ring, the pressing ring is positioned above the limiting ring, the central tube (1) is movably connected with the inner cavity of the limiting ring, the bottom of the sealing sleeve (3) is fixedly connected with a rubber tube (4), the bottom of the rubber tube (4) is fixedly connected with the central tube (1), the top of the rubber tube (4) is movably connected with the central tube (1), the bottom of the central tube (1) is movably connected with a cone (18), the top of the lower joint (2) is fixedly connected with a slip, the slip is matched with the bottom of the cone (18), and the outer ring of the top of the central tube (1) is uniformly and fixedly connected with a connecting plate (12), the other end of the connecting plate (12) is fixedly connected with one end of a pull rope (14), the top of the sealing sleeve (3) is uniformly and fixedly connected with a supporting rod (17), the outer side of the other end of the supporting rod (17) is movably connected with a spool (13), the pull rope (14) is wound on the spool (13), the other end of the pull rope (14) is fixedly connected with the top of a protective sleeve (16), the rubber cylinder (4) is positioned in the inner cavity of the protective sleeve (16), the top of the protective sleeve (16) is uniformly and fixedly connected with a first spring (15), the other end of the first spring (15) is fixedly connected with the outer side of the top end of the sealing sleeve (3), one side of the protective sleeve (16) is provided with a cutter groove, a scraper (11) is clamped in the inner cavity of the cutter groove, the inner side of the top end of the scraper (11) is fixedly connected with a telescopic pipe (9), and the top of the scraper (11) is movably connected with a push rod (8), one side of the upper joint (5) is provided with a movable groove, the other end of the telescopic pipe (9) is movably connected with the inner cavity of the movable groove, the other end of the push rod (8) extends into the inner cavity of the upper joint (5) through the movable groove, a press plate (6) is movably connected in the inner cavity of the upper joint (5), and the other end of the push rod (8) is movably connected with the bottom of the press plate (6).
2. A downhole wedge packer as recited in claim 1, wherein: the bottom of the upper joint (5) is fixedly connected with a connecting pipe (10), and the connecting pipe (10) is movably connected with the top end of the inner cavity of the central pipe (1).
3. A downhole wedge packer as recited in claim 1, wherein: the telescopic pipe (9) comprises an inner pipe and an outer pipe, the inner pipe is movably connected in the inner cavity of the outer pipe, the middle of the inner cavity of the inner pipe is fixedly connected with a second spring, and the other end of the second spring is fixedly connected with the inner side of the inner cavity of the outer pipe.
4. A downhole wedge packer as recited in claim 1, wherein: the middle part of push rod (8) one end is equipped with the recess, the middle part fixedly connected with connecting block at scraper (11) top, the equal swing joint in both ends of connecting block has the dwang, the other end of dwang and the inner chamber of recess be fixed connection mutually, the both ends of connecting block all with the one end looks fixed connection of torsional spring (7), the other end of torsional spring (7) and the inner chamber of recess be fixed connection mutually, and the dwang is located the inner chamber of torsional spring (7), the dwang and the inner chamber looks swing joint of torsional spring (7).
5. A downhole wedge packer as recited in claim 1, wherein: the protective sleeve (16) is made of metal, and an anti-corrosion layer is coated on the outer surface of the protective sleeve (16).
CN202110414172.3A 2021-04-16 2021-04-16 Down-hole wedged packer Withdrawn CN113153206A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110414172.3A CN113153206A (en) 2021-04-16 2021-04-16 Down-hole wedged packer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110414172.3A CN113153206A (en) 2021-04-16 2021-04-16 Down-hole wedged packer

Publications (1)

Publication Number Publication Date
CN113153206A true CN113153206A (en) 2021-07-23

Family

ID=76868626

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110414172.3A Withdrawn CN113153206A (en) 2021-04-16 2021-04-16 Down-hole wedged packer

Country Status (1)

Country Link
CN (1) CN113153206A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113550711A (en) * 2021-09-22 2021-10-26 南通迪斯船舶科技有限公司 Umbrella-shaped self-opening type ocean engineering pile pipe packer
CN113863889A (en) * 2021-09-27 2021-12-31 李香珍 A general pilot production instrument for oil reservoir shutoff
CN117108240A (en) * 2023-09-27 2023-11-24 武汉齐达康能源装备有限公司 Fracturing open flow device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113550711A (en) * 2021-09-22 2021-10-26 南通迪斯船舶科技有限公司 Umbrella-shaped self-opening type ocean engineering pile pipe packer
CN113550711B (en) * 2021-09-22 2021-11-19 南通迪斯船舶科技有限公司 Umbrella-shaped self-opening type ocean engineering pile pipe packer
CN113863889A (en) * 2021-09-27 2021-12-31 李香珍 A general pilot production instrument for oil reservoir shutoff
CN117108240A (en) * 2023-09-27 2023-11-24 武汉齐达康能源装备有限公司 Fracturing open flow device

Similar Documents

Publication Publication Date Title
CN113153206A (en) Down-hole wedged packer
CN111255415B (en) Self-adaptive intelligent telescopic well hole sand scraping tool suitable for complex structure well hole
CN110735609B (en) Application method of device for petroleum industry
CN201851074U (en) Slips type anti-retreat hydraulic packer
CN209621250U (en) Fisher
CN215485922U (en) Cover plate buffering type hydraulic slip device
CN201265389Y (en) Lower-pressure deblocking type bridge plug and deblocking suspension
CN113027367A (en) Mechanical oil pipe anchor for stabilizing oil pipe
CN110397418B (en) Combined packer
CN204140015U (en) Well mouth pressure testing packer
CN112709556B (en) Rapid well completion pipe string for offshore oilfield water injection well and construction method
CN217999544U (en) Scouring-resistant packer for oil well
CN112012694A (en) Oil bailing device
CN216130923U (en) Stratum near-well crack detection device after fracturing construction
CN212985157U (en) Packer with good sealing performance at joint
CN219242192U (en) Slurry pump convenient to wash
CN112324384B (en) Non-well killing operation process method applying pressure control switch valve
CN208650843U (en) Casing coupling finder
CN117307097A (en) Offshore platform continuous capillary steel pipe oil pipe passing descaling device and use method
CN217813413U (en) Integral overload protection quantitative sleeve oil bailer
CN220226764U (en) Continuous sucker rod wellhead braking device
CN220769684U (en) Underground swabbing plunger device
CN216813421U (en) Hydraulic flange pipe joint sealing plug
CN217129484U (en) Hydraulic pressure fishing specialized tool
RU2278244C1 (en) Tubing tester

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20210723

WW01 Invention patent application withdrawn after publication