CN109236220A - One kind is exempted to be buckled to rotary tail running tool and method - Google Patents

One kind is exempted to be buckled to rotary tail running tool and method Download PDF

Info

Publication number
CN109236220A
CN109236220A CN201811432631.5A CN201811432631A CN109236220A CN 109236220 A CN109236220 A CN 109236220A CN 201811432631 A CN201811432631 A CN 201811432631A CN 109236220 A CN109236220 A CN 109236220A
Authority
CN
China
Prior art keywords
ball
rubber plug
tail pipe
tail
buckled
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.)
Granted
Application number
CN201811432631.5A
Other languages
Chinese (zh)
Other versions
CN109236220B (en
Inventor
刘硕琼
靳建洲
曲从锋
李连江
孙宝玉
王兆会
黄昭
李军鹏
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.)
China National Petroleum Corp
CNPC Great Wall Drilling Co
CNPC Engineering Technology R&D Co Ltd
Original Assignee
Cementing Co of CNPC Great Wall Drilling Engineering Co Ltd
CNPC Engineering Technology Research Institute Co Ltd
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 Cementing Co of CNPC Great Wall Drilling Engineering Co Ltd, CNPC Engineering Technology Research Institute Co Ltd filed Critical Cementing Co of CNPC Great Wall Drilling Engineering Co Ltd
Priority to CN201811432631.5A priority Critical patent/CN109236220B/en
Publication of CN109236220A publication Critical patent/CN109236220A/en
Application granted granted Critical
Publication of CN109236220B publication Critical patent/CN109236220B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/10Geothermal energy

Landscapes

  • 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 present invention provides one kind and exempts to be buckled to rotary tail running tool and method, is related to natural gas exploration and development field;This tool includes central tube and tail pipe connecting cylinder, and tail pipe connecting cylinder is nested on central tube by connecting ball device;Connecting ball device includes the mandril that the tail pipe connecting cylinder is arranged in, and the ball seat inside connected ball and centrally disposed pipe, in a first state, the connected ball is mounted among the ball seat and the mandril present invention;Being built the pressure by well head pitching cuts off the ball seat in central tube, and the ball seat and the mobile deviation connected ball of the mandril achieve the purpose that be sent into tail pipe so that tail pipe connecting cylinder be separated with central tube.The invention can safely and smoothly realize tail pipe setting of casing, guarantee going on smoothly for drilling liner cementing operation, and tail pipe string, which is lowered into well head pitching behind shaft bottom and builds the pressure, gives up, it is ensured that rotary tail, which exempts from back-off, to be smoothly sent into, and implementation method is reliable;Simple structure design is easy to process simultaneously, reduces manufacturing cost.

Description

One kind is exempted to be buckled to rotary tail running tool and method
Technical field
Exempt to be buckled to rotary tail running tool and side the present invention relates to natural gas exploration and development field more particularly to one kind Method.
Background technique
Drilling liner cementing can save oil/gas well development cost, save social resources.For this purpose, people have invented " extension hanger " (201510956001.8), " a kind of oil/gas well extension hanger " (201820244595.9), " buckling type tail with slips The liner hanger tools such as hanger " (201711030338.1) are used to carry out the drilling liner cementing operation of oil/gas well.But these are sent out Bright all to there is identical defect: structure is complicated for tool, and production and processing is at high cost, and machining accuracy is difficult to be guaranteed, and performance is not Stablize, high pressure circulation is difficult to set up during setting of casing, is hampered during setting of casing, blocks and tail pipe cannot be rotated, sitting It needs to be buckled to the disadvantages of giving up operation after extension.
Summary of the invention
Exempt to be buckled to rotary tail running tool the purpose of the present invention is to provide one kind, to solve to exist in the prior art Foregoing problems.
To achieve the goals above, The technical solution adopted by the invention is as follows:
One kind is exempted to be buckled to rotary tail running tool, and the tool includes central tube and tail pipe connecting cylinder, and the tail pipe connects Connect cylinder is nested on the central tube by connecting ball device;
The connection ball device includes the mandril that the tail pipe connecting cylinder is arranged in, in connected ball and centrally disposed pipe The ball seat in portion,
In a first state, the connected ball is mounted among the ball seat and the mandril;
In the second state, the ball seat and the mobile deviation connected ball of the mandril.
Preferably, in the first state, the ball seat is mounted on inside central tube by ball seat pin.
Preferably, the mandril is fixed by jogger hole, and the ball seat pin is fixed by pin hole, and the connected ball is set It sets in connecting hole.
Preferably, the jogger hole and the connecting hole are 6.
Preferably, the tail pipe connecting cylinder includes shear pin, rubber plug body, rubber plug, rubber plug skeleton and rubber plug seat, the glue Cock body is connected through a screw thread with the rubber plug seat, and rubber plug is cased on the rubber plug body and is fixed to be formed by the rubber plug seat The tail pipe rubber plug of one entirety;The tail pipe rubber plug is fixed on the lower inside of tail pipe connecting cylinder by shear pin.
Preferably, block head is installed on the shear pin, between the rubber plug and rubber plug of the tail pipe rubber plug, rubber plug with Pressure ring is installed, for compressing rubber plug between rubber plug body.
Preferably, it is machined with drill rod thread on the inside of the central tube upper end and outside is machined with a recess step and can be used for now Field connection drilling tool.
Preferably, jogger hole top and lower part are connect on the outside of central tube, on the inside of central tube on the inside of the tail pipe connecting cylinder Pacify respectively on the outside of hole top and lower part and ball seat, on the outside of mandril and on the inside of jogger hole inside, pin hole between block head outside Equipped with sealing ring.
Exempt to be buckled to rotary tail feeding method it is a further object to provide one kind, comprising the following steps:
S1 will exempt from back-off rotary tail running tool and be connected on solid completion tubular string, and decentralization is to bottom hole location and is bored Well liquid cycle operation;
S2 puts into ball of giving up after completing cycle operation, builds the pressure, make to pipe string after ball of giving up drops down onto ball seat position The upper and lower section of ball seat forms pressure difference and ball seat is cut off cutting;
S3, the ball of giving up are moved down simultaneously with ball seat, are dropped down onto rubber plug seat, then above propose central tube reality by well head Existing tail pipe is sent into process.
Preferably, during tripping in, it can be rotated at any time by turntable in case of exceptional circumstances and drive tail pipe rotation or carry out Cycle operation.
The beneficial effects of the present invention are:
Tail can safely and smoothly be realized by exempting from back-off rotary tail running tool and method, the invention the present invention provides one kind Pipe setting of casing guarantees that drilling liner cementing operation is gone on smoothly, and tail pipe string, which is lowered into well head pitching behind shaft bottom and builds the pressure, gives up, it is ensured that rotation Turn tail pipe and exempt to be buckled to and can smoothly be sent into, implementation method is reliable;Simple structure design is easy to process simultaneously, reduces production system Cause this.
Detailed description of the invention
Fig. 1 is the front view structure half-section diagram of the embodiment of the present invention;
Fig. 2 be pitching of the embodiment of the present invention build the pressure ball seat cut off cut after front view structure half-section diagram;
Fig. 3 is the front view structure half-section diagram after the embodiment of the present invention is given up;
Fig. 4 is the details enlarged drawing that ball device is connected in Fig. 1;
Fig. 5 is the details enlarged drawing that ball device is connected in Fig. 3;
Fig. 6 is the details enlarged drawing of tail pipe connecting cylinder lower part;
1-central tube, 2-tail pipe connecting cylinders, 3-mandrils, 4-connected balls, 5-ball seats are cut off, 6-ball seats, and 7-block Head, 8-shear pins, 9-springs, 10-rubber plug bodies, 11-rubber plugs, 12-rubber plug skeletons, 13-pressure rings, 14-fixed spiral shells Nail, 15-rubber plug seats, 16- give up ball, 17- connected ball pedestal.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into Row is further described.It should be appreciated that the specific embodiments described herein are only used to explain the present invention, it is not used to Limit the present invention.
Attached drawing involved in embodiment is semi-cutaway, and top half is sectional view, and lower half portion is outside drawing.
Embodiment 1
Exempt to be buckled to rotary tail running tool the present embodiment provides one kind, by central tube, tail pipe connecting cylinder, mandril, connection Ball, connected ball pedestal, ball seat, ball seat pin, composition;Tail pipe connecting cylinder middle and lower part is evenly distributed in 6 jogger holes, lower circumference It is evenly equipped with 4 pin holes;Central tube lower circumferential is evenly equipped with 6 connecting holes;Tail pipe connecting cylinder is using on jogger hole and central tube Connecting hole be connected and fixed by connected ball and mandril;It is equipped with connected ball corresponding position by shear pin on the inside of central tube Ball seat accepts the connected ball pedestal of connected ball, in a first state, as shown in Figure 1, ball containing one between connected ball and ball seat Seat is corresponding with connection ball position, in the second state, as shown in Fig. 2, built the pressure after ball of giving up is put by well head, ball seat Pressure difference is formed between upper-lower section, and ball seat is cut off interruption by the pressure difference, so that give up ball and ball seat moves downwardly together, It drops down onto rubber plug seat, connected ball does not have supporting point at this time, and toward central tube medial movement, active force disappears between connected ball and mandril It loses, central tube is above mentioned by well head and realizes operation of giving up, as shown in Fig. 3.
The rotary tail running tool of exempting to be buckled to provided in the present embodiment further includes shear pin, rubber plug body, rubber plug, rubber plug Skeleton and rubber plug seat are cased with glue on the rubber plug body as shown in fig. 6, the rubber plug body is connected through a screw thread with the rubber plug seat It fills in and is fixed the tail pipe rubber plug to form an entirety by the rubber plug seat;The tail pipe rubber plug is fixed by shear pin In the lower inside of tail pipe connecting cylinder.Block head is installed on the shear pin, the rubber plug and rubber plug of the tail pipe rubber plug it Between, between rubber plug and rubber plug body pressure ring is installed, for compressing rubber plug.
It is machined with drill rod thread on the inside of central tube upper end described in the present embodiment and outside is machined with a recess step and can be used Drilling tool is connected on site, and jogger hole top and lower part are connect on the outside of central tube, on the inside of central tube on the inside of the tail pipe connecting cylinder Pacify respectively on the outside of hole top and lower part and ball seat, on the outside of mandril and on the inside of jogger hole inside, pin hole between block head outside Equipped with sealing ring.
In addition, rubber plug body is connected through a screw thread with rubber plug seat, it is cased with rubber plug on rubber plug body and is fixed by rubber plug seat Form the tail pipe rubber plug an of entirety;Tail pipe rubber plug is fixed on the lower inside of tail pipe connecting cylinder by shear pin.
Embodiment 2
The present embodiment provides a kind of rotary tail running tools of exempting to be buckled to using in embodiment 1 to consolidate tail pipe feeding shaft bottom The use of well operates, comprising the following steps:
Tool documented in embodiment 1 is connected on solid completion tubular string, is transferred by design requirement to bottom hole location, During tripping in, such as be hampered, block complex situations can at any time by turntable rotate drive tail pipe rotation or carry out cycle operation, when Tail pipe string smoothly carries out circulation of drilling fluid operation behind shaft bottom;Ball of giving up is put into well head after completion cycle operation, wait give up Ball builds the pressure to pipe string after dropping down onto ball seat position, so that the upper and lower section of ball seat is formed pressure difference to which ball seat is cut off cutting, makes to lose Handball is moved down with ball seat, is dropped down onto rubber plug seat as shown in Fig. 2, then above mention central tube by well head and realize operation of giving up As shown in Fig. 3;Central tube is returned after operation of giving up is smooth and is inserted in tail pipe connecting cylinder, and carries out cementing operation, Drilling rod rubber plug is discharged in well head after cementing, and is completed for slurry, bruising operation is again stepped up central tube after bruising, When central tube is mentioned to 2-5m outside tail pipe connecting cylinder, bell mouth operation is rinsed to tail pipe connecting cylinder, finally above mentions drilling tool, Central tube is proposed into well head;Complete the operation of tail pipe cementing well.
By using above-mentioned technical proposal disclosed by the invention, following beneficial effect has been obtained:
Tail can safely and smoothly be realized by exempting from back-off rotary tail running tool and method, the invention the present invention provides one kind Pipe setting of casing guarantees that drilling liner cementing operation is gone on smoothly, and tail pipe string, which is lowered into well head pitching behind shaft bottom and builds the pressure, gives up, it is ensured that rotation Turn tail pipe and exempt to be buckled to and can smoothly be sent into, implementation method is reliable;Simple structure design is easy to process simultaneously, reduces production system Cause this.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered Depending on protection scope of the present invention.

Claims (10)

1. one kind is exempted to be buckled to rotary tail running tool, which is characterized in that the tool includes central tube and tail pipe connecting cylinder, institute It states tail pipe connecting cylinder and is nested on the central tube by connecting ball device;
The connection ball device includes the mandril that the tail pipe connecting cylinder is arranged in, inside connected ball and centrally disposed pipe Ball seat,
In a first state, the connected ball is mounted among the ball seat and the mandril;
In the second state, the ball seat and the mobile deviation connected ball of the mandril.
2. according to claim 1 exempt to be buckled to rotary tail running tool, which is characterized in that in the first state, institute Ball seat is stated to be mounted on inside central tube by ball seat pin.
3. according to claim 1 exempt to be buckled to rotary tail running tool, which is characterized in that the mandril passes through jogger hole Fixed, the ball seat pin is fixed by pin hole, and the connected ball is arranged in connecting hole.
4. according to claim 3 exempt to be buckled to rotary tail running tool, which is characterized in that the jogger hole and the company Connecing hole is 6.
5. according to claim 1 exempt to be buckled to rotary tail running tool, which is characterized in that the tail pipe connecting cylinder includes Shear pin, rubber plug body, rubber plug, rubber plug skeleton and rubber plug seat, the rubber plug body is connected through a screw thread with the rubber plug seat, described It is cased with rubber plug on rubber plug body and is fixed the tail pipe rubber plug to form an entirety by the rubber plug seat;The tail pipe rubber plug is logical Cross the lower inside that shear pin is fixed on tail pipe connecting cylinder.
6. according to claim 5 exempt to be buckled to rotary tail running tool, which is characterized in that installed on the shear pin There is block head, pressure ring is installed between the rubber plug and rubber plug of the tail pipe rubber plug, between rubber plug and rubber plug body, for compressing glue Plug.
7. according to claim 1 exempt to be buckled to rotary tail running tool, which is characterized in that on the inside of the central tube upper end It is machined with drill rod thread and outside is machined with a recess step and can be used for joint connection in site drilling tool.
8. according to claim 1 exempt to be buckled to rotary tail running tool, which is characterized in that on the inside of the tail pipe connecting cylinder On the outside of jogger hole top and lower part and central tube, on the inside of central tube on the outside of connecting hole top and lower part and ball seat, on the outside of mandril and Sealing ring is separately installed between block head outside on the inside of jogger hole, on the inside of pin hole.
9. one kind is exempted to be buckled to rotary tail feeding method, which comprises the following steps:
S1 will exempt from back-off rotary tail running tool and be connected on solid completion tubular string, and decentralization is to bottom hole location and carries out drilling fluid Cycle operation;
S2 puts into ball of giving up after completing cycle operation, builds the pressure after ball of giving up drops down onto ball seat position to pipe string, make ball seat Upper and lower section forms pressure difference and ball seat is cut off cutting;
S3, the ball of giving up is moved down simultaneously with ball seat, is dropped down onto rubber plug seat, then is above mentioned central tube by well head and realized tail Pipe is sent into process.
10. according to claim 9 exempt to be buckled to rotary tail feeding method, which is characterized in that during tripping in, in case of Special circumstances can be rotated by turntable at any time drives tail pipe rotation or progress cycle operation.
CN201811432631.5A 2018-11-28 2018-11-28 Back-off-free rotary tail pipe running tool and method Active CN109236220B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811432631.5A CN109236220B (en) 2018-11-28 2018-11-28 Back-off-free rotary tail pipe running tool and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811432631.5A CN109236220B (en) 2018-11-28 2018-11-28 Back-off-free rotary tail pipe running tool and method

Publications (2)

Publication Number Publication Date
CN109236220A true CN109236220A (en) 2019-01-18
CN109236220B CN109236220B (en) 2023-09-12

Family

ID=65074261

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811432631.5A Active CN109236220B (en) 2018-11-28 2018-11-28 Back-off-free rotary tail pipe running tool and method

Country Status (1)

Country Link
CN (1) CN109236220B (en)

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2387258Y (en) * 1999-07-02 2000-07-12 辽河石油勘探局钻采工艺研究院 Giving up appts. for double enclosed tail pipe well completion pipe column
CN2697305Y (en) * 2004-02-06 2005-05-04 盘锦金盘科技有限责任公司 Lock block type hydraulic releasing gadget
CN2908761Y (en) * 2005-09-27 2007-06-06 北京泊溪科技有限责任公司 Hanger for rotary cartriage container
CN2926483Y (en) * 2006-05-23 2007-07-25 辽河石油勘探局 Branch well coupling device
CN202047786U (en) * 2011-05-15 2011-11-23 中国石油集团西部钻探工程有限公司 Tail pipe composite rubber plug
CN102536160A (en) * 2010-12-24 2012-07-04 中国石油化工股份有限公司 Ball seat type rubber plug system for liner cementing
CN102979472A (en) * 2012-12-06 2013-03-20 中国石油集团西部钻探工程有限公司 Expansion hanger
CN203130037U (en) * 2013-03-20 2013-08-14 中国石油化工股份有限公司 Ball seat type rubber plug system
CN203394370U (en) * 2013-07-19 2014-01-15 中国石油天然气股份有限公司 Shear type releasing joint
CN104047564A (en) * 2014-06-13 2014-09-17 中国石油集团西部钻探工程有限公司 Underground drilling-following expandable casing expansion sealing device
CN203867502U (en) * 2014-01-29 2014-10-08 中国石油集团西部钻探工程有限公司 Hydraulic releasing tool
CN105370230A (en) * 2015-12-14 2016-03-02 天津汇铸石油设备科技有限公司 Releasing tool
CN105937382A (en) * 2016-06-17 2016-09-14 中国石油天然气股份有限公司 Hydraulic bidirectional slip type hanger
CN106567676A (en) * 2015-10-12 2017-04-19 中石化石油工程技术服务有限公司 Expansive tail pipe drilling operation device and operation method thereof
CN106869838A (en) * 2017-03-23 2017-06-20 中国石油集团西部钻探工程有限公司 Hydraulic release device
WO2017196335A1 (en) * 2016-05-12 2017-11-16 Halliburton Energy Services, Inc. Apparatus and method for creating a plug in a wellbore
CN209228324U (en) * 2018-11-28 2019-08-09 中国石油集团工程技术研究院有限公司 One kind is exempted to be buckled to rotary tail running tool

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2387258Y (en) * 1999-07-02 2000-07-12 辽河石油勘探局钻采工艺研究院 Giving up appts. for double enclosed tail pipe well completion pipe column
CN2697305Y (en) * 2004-02-06 2005-05-04 盘锦金盘科技有限责任公司 Lock block type hydraulic releasing gadget
CN2908761Y (en) * 2005-09-27 2007-06-06 北京泊溪科技有限责任公司 Hanger for rotary cartriage container
CN2926483Y (en) * 2006-05-23 2007-07-25 辽河石油勘探局 Branch well coupling device
CN102536160A (en) * 2010-12-24 2012-07-04 中国石油化工股份有限公司 Ball seat type rubber plug system for liner cementing
CN202047786U (en) * 2011-05-15 2011-11-23 中国石油集团西部钻探工程有限公司 Tail pipe composite rubber plug
CN102979472A (en) * 2012-12-06 2013-03-20 中国石油集团西部钻探工程有限公司 Expansion hanger
CN203130037U (en) * 2013-03-20 2013-08-14 中国石油化工股份有限公司 Ball seat type rubber plug system
CN203394370U (en) * 2013-07-19 2014-01-15 中国石油天然气股份有限公司 Shear type releasing joint
CN203867502U (en) * 2014-01-29 2014-10-08 中国石油集团西部钻探工程有限公司 Hydraulic releasing tool
CN104047564A (en) * 2014-06-13 2014-09-17 中国石油集团西部钻探工程有限公司 Underground drilling-following expandable casing expansion sealing device
CN106567676A (en) * 2015-10-12 2017-04-19 中石化石油工程技术服务有限公司 Expansive tail pipe drilling operation device and operation method thereof
CN105370230A (en) * 2015-12-14 2016-03-02 天津汇铸石油设备科技有限公司 Releasing tool
WO2017196335A1 (en) * 2016-05-12 2017-11-16 Halliburton Energy Services, Inc. Apparatus and method for creating a plug in a wellbore
CN105937382A (en) * 2016-06-17 2016-09-14 中国石油天然气股份有限公司 Hydraulic bidirectional slip type hanger
CN106869838A (en) * 2017-03-23 2017-06-20 中国石油集团西部钻探工程有限公司 Hydraulic release device
CN209228324U (en) * 2018-11-28 2019-08-09 中国石油集团工程技术研究院有限公司 One kind is exempted to be buckled to rotary tail running tool

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
谢威: "旋转尾管固井工具设计与研制", 科技与企业 *
齐月魁: "老井侧钻注水完井工艺试验性研究", 钻采工艺 *

Also Published As

Publication number Publication date
CN109236220B (en) 2023-09-12

Similar Documents

Publication Publication Date Title
CN102966327B (en) expansion pipe
CN209228337U (en) A kind of dissolvable bridge plug
CN105484695B (en) Mechanical and hydraulic double-acting expansion device suitable for expansion tube drilling well
CN108166965B (en) Sand blasting perforation, fracturing and packing integrated device
CN103775015B (en) Expand instrument under cased well and use its expansion sleeve method
CN109339756B (en) Construction method of pressure reduction type fracturing channel
CN109973066A (en) A kind of full-bore well cementation fracturing device
CN205805463U (en) A kind of retrievable bridge plug solution sealing mechanism
CN204851170U (en) Oil gas well well cementation staged fracturing bowling sliding sleeve
CN107387050A (en) A kind of ball-throwing type full-bore fracturing sliding bush
CN111411917B (en) Tail pipe cementing tool with packer and cementing method
CN101906946A (en) Hydraulic expansion-type rotary liner hanger
CN214697790U (en) Novel sealed horizontal fluting magnesium lithium alloy A type soluble ball seat
CN105625986A (en) Scraper-controllable multifunctional wall scraping device
CN207568553U (en) Bridge plug
CN207048760U (en) A kind of ball-throwing type full-bore fracturing sliding bush
CN103628834B (en) Locking type expansion liner hanger
CN101358512A (en) Rotary tail pipe hanger capable of respectively drilling and completing
CN209228324U (en) One kind is exempted to be buckled to rotary tail running tool
CN214697789U (en) Novel sealed horizontal slotted magnesium-lithium alloy B-type soluble ball seat
CN205778652U (en) A kind of core drill based on hydraulic pressure card coring
CN109236220A (en) One kind is exempted to be buckled to rotary tail running tool and method
CN205778651U (en) A kind of probing hydraulic pressure rock core card fetching is put
CN201092845Y (en) Hydraulic pressure, double back-off hand type dragable bridge plug
CN106593391A (en) Chemical deblocking compression type packer partial pressure pipe column and oil well fracturing method

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
TA01 Transfer of patent application right

Effective date of registration: 20201216

Address after: 100120 Xicheng District six paw Kang in Beijing City

Applicant after: CHINA NATIONAL PETROLEUM Corp.

Applicant after: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd.

Applicant after: CNPC GREATWALL DRILLING Co.

Address before: Building 1, yard 5, Huanghe street, Changping District, Beijing

Applicant before: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd.

Applicant before: CEMENTING COMPANY, CNPC GREATWALL DRILLING Co.

TA01 Transfer of patent application right
GR01 Patent grant
GR01 Patent grant