CN105041283B - Formula of helping pull a cart full-bore fracturing tool and control method - Google Patents
Formula of helping pull a cart full-bore fracturing tool and control method Download PDFInfo
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- CN105041283B CN105041283B CN201410645321.7A CN201410645321A CN105041283B CN 105041283 B CN105041283 B CN 105041283B CN 201410645321 A CN201410645321 A CN 201410645321A CN 105041283 B CN105041283 B CN 105041283B
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- fracturing tool
- motor
- turnbarrel
- roller
- sliding sleeve
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Abstract
The invention discloses formula full-bore fracturing tool and the control method of helping pull a cart, wherein instrument includes fracturing tool body, motor switch instrument, the fracturing tool body includes the top connection being sequentially connected from top to bottom, overcoat, lower contact, the fracturing tool inner body wall, which is provided with, cuts sliding sleeve and turnbarrel that pin temporarily links together, top connection upper end inwall connection orientation spool, the sliding sleeve upper end sets protecting against shock set, T-shaped packing and T-shaped packing retainer ring are provided between the sliding sleeve and top connection, the motor switch instrument is the device that turnbarrel and sliding sleeve can be driven to be axially moved.The motor switch instrument includes positioner and Unscrew device, and the positioner includes axial direction positioning device, radial positioning device, rotary positioning apparatus.This invention ensures that the repeatability of the quick opening and closing of fracturing tool and fracturing tool, while ensure that all fracturing tool latus rectums are consistent, improves the success rate of switch.
Description
Technical field
The present invention relates to multistage subsection fracturing technique, formula of specifically helping pull a cart full-bore fracturing tool and control method.
Background technology
Multistage subsection fracturing technique is a kind of staged fracturing technology conventional at present, general to be divided by the way of mechanical pitching
Section pressure break, every one-level sliding sleeve internal diameter and pressure break ball are differed, and from bottom to top, bulb diameter is incrementally increased, maximum no more than upper
The internal diameter of section instrument, not only device is complicated, and operating efficiency is low, and there is the problem of pressure break series is limited., must also after the completion of pressure break
Lower drilling tool grinds off ball seat to ensure necessary latus rectum.A kind of new fracturing tool is needed to solve traditional fracturing technique at present
It is not enough, it is to avoid to influence production efficiency because sliding sleeve latus rectum is small.
The content of the invention
It is an object of the invention to provide formula full-bore fracturing tool and the control method of helping pull a cart, it is ensured that fracturing tool is quick
Opening and closing and the repeatability of fracturing tool, while ensure that all fracturing tool latus rectums are consistent, improve switch
Success rate.
In order to reach above-mentioned purpose, present invention employs following technical scheme, formula of helping pull a cart full-bore fracturing tool, including pressure
Tool body, motor switch instrument are split, the motor switch instrument is located at fracturing tool body interior, the fracturing tool body
Including the top connection being sequentially connected from top to bottom, overcoat, lower contact, the fracturing tool inner body wall is provided with break pin
Follow closely the sliding sleeve and turnbarrel temporarily linked together, top connection upper end inwall connection orientation spool, the sliding sleeve upper end
Portion sets protecting against shock set, and T-shaped packing and T-shaped packing retainer ring, the driven opening are provided between the sliding sleeve and top connection
Pass instrument is the device that turnbarrel and sliding sleeve can be driven to be axially moved.
The motor switch instrument includes positioner and Unscrew device, and the positioner is filled including axially position
Put, radial positioning device, rotary positioning apparatus, the axial direction positioning device enter orientation spool locating slot, the rotation determine
Position device enters the locating slot of turnbarrel.
The axial direction positioning device includes axially position motor and movement conversion mechanism, centrum, axially position roller, described
Axially position motor is connected by movement conversion mechanism with centrum, and the bottom surface of the centrum is connected on axially position roller, institute
State and set gradually side below axially position roller and push away spring, directly push away spring, straight push away sets spring to fix on the outside of spring upper end
Set, the radial positioning device includes radially anti-circumflex branch brace roller, radially anti-circumflex branch brace, the anti-circumflex branch brace rolling of radial direction
Wheel top sets fixed cover, and fixed cover top pushes away spring to be straight, and radially anti-rotation is provided below in the anti-circumflex branch brace roller of radial direction
Spring is set above support arm, the anti-circumflex branch brace of radial direction and locked by anti-circumflex branch brace steady pin, the rotational positioning
Device includes setting pivotal support arm above swing roller, pivotal support arm, the swing roller, on the inside of the pivotal support arm
Spring is set, and the pivotal support arm is fixed by support arm steady pin.
The Unscrew device includes motor and torque boosting mechanism, guide head, guide head overcoat, and the motor drives
The motor rotation reinforcement output shaft rotation of torque boosting mechanism, the motor rotation reinforcement output shaft and guide head overcoat pass through rotation
Pivoted arm steady pin is connected into together, and guide head is fixed in guide head overcoat, and the guide head overcoat is located at rotational positioning
Below device, the Unscrew device drives rotary positioning apparatus rotation, and rotary positioning apparatus drives turnbarrel rotation, rotation
It is meshed on the outside of rotaring sleeve provided with trapezoidal external screw thread with trapezoidal internal thread in lower contact, turnbarrel is axially transported while rotation
Dynamic, turnbarrel is connected with sliding sleeve by cutting pin, so driving sliding sleeve to be axially moved.
Also include mechanical dragging switching tools, the mechanical dragging switching tools include central tube and are enclosed on center
Switch block on the outside of pipe, is cased with spring between the switch block and central tube, the switch block two ends pass through switch block fixed cover
It is fixed on central tube.
The upper end of the motor switch instrument is additionally provided with connector.
In order to reach above-mentioned another object, present invention employs following technical scheme, one kind is helped pull a cart formula full-bore pressure break work
The control method of tool, its step is：
Formula of helping pull a cart first full-bore fracturing tool is lowered into well with sleeve pipe, under instrument in place after, pass through steel of logging well
Downhole electric switching tools are transported to by silk or continuous pipe needs the layer position top of pressure break, starts axially position motor, its axial direction
The movement conversion mechanism of positioning motor is by the axial movement that the convert rotational motion of motor is cone, and cone promotes axially position rolling
Wheel is protruding, while compressed side pushes away spring, after axially position roller is fully extended, more than in fracturing tool orientation spool
Footpath, such downhole electric switching tools just generate accurate axially position above formula full-bore fracturing tool of helping pull a cart.Due to
The distance between swing roller and the anti-circumflex branch brace roller of radial direction in downhole electric switching tools and formula full-bore pressure break of helping pull a cart
The distance between the locating slot in orientation spool and turnbarrel in instrument is identical, so in downhole electric switching tools axial direction
On the premise of positioning, swing roller and the anti-circumflex branch brace roller of radial direction in downhole electric switching tools have respectively entered the formula of helping pull a cart
In the locating slot in orientation spool and turnbarrel in full-bore fracturing tool, radial positioning and rotational positioning are produced, wherein
Swing roller and the anti-circumflex branch brace roller of radial direction in downhole electric switching tools are constantly in open under the force of a spring
State, the anti-circumflex branch brace of swing roller compression radial direction and spring when running into necking down, radially anti-circumflex branch brace roller compression rotation
Support arm and spring, the corresponding positioning of generation will be strutted automatically when entering in locating slot；
Then motor is started, motor is output to motor by torque boosting mechanism and rotates reinforcement output shaft, due to turning arm
Motor is rotated steady pin into reinforcement output shaft and guide head overcoat is secured together, so driving guide head, pivotal support arm, branch
Brace steady pin is rotated together, and swing roller is embedded in the locating slot in turnbarrel, so related turnbarrel one
Rise and be meshed on the outside of rotation, turnbarrel provided with trapezoidal external screw thread with trapezoidal internal thread in lower contact, it is same that turnbarrel rotates
When be axially moved, turnbarrel is connected with sliding sleeve by cutting pin, thus drive sliding sleeve be axially moved, realize either on or off
Action；
When can not be opened by motor switch help pull a cart formula full-bore fracturing tool when, mechanically dragged by coiled tubing tripping in
Under dynamic switching tools, mechanical dragging switching tools in place after, switch block is entered in formula full-bore fracturing tool sliding sleeve of helping pull a cart
Locating slot in, by drag switch block drive sliding sleeve, then cut the cutting pin, realize mechanical switch or closing.
Compared to prior art, the invention has the advantages that：
The present invention has abandoned ball and sealed with ball seat and unfolding mode, using the related electronic opening of logging steel wire or coiled tubing
Instrument is gone into the well and opens fracturing tool, this method ensure that fracturing tool quickly open and close and fracturing tool it is repeatable
Property, while ensure that all fracturing tool latus rectums are consistent, because sliding sleeve will open work by screw rod leading screw inside fracturing tool
The convert rotational motion of tool is into the axial movement of sliding sleeve, and the drawing force of sliding sleeve is big, the success rate of switch is improved, so as to improve
The production efficiency of oil reservoir and the applicability of device, especially improve the reliability of directional well and horizontal well.
Brief description of the drawings
Fig. 1 is formula full-bore fracturing tool structure chart of helping pull a cart；
Fig. 2 is downhole electric switching tools structure chart；
Fig. 3 opens tool construction figure for mechanical dragging.
In figure：Orientation spool 1, top connection 2, protecting against shock set 3, T-shaped packing retainer ring 4, T-shaped packing 5, sliding sleeve 6, overcoat 7,
Cut pin 8, turnbarrel 9, lower contact 10.Guide head 11, guide head overcoat 12, swing roller 13, pivotal support arm 14, bullet
Spring 15, support arm steady pin 16, turning arm steady pin 17, motor rotation reinforcement output shaft 18, motor 19, cable fixed cover 20,
Radially anti-circumflex branch brace steady pin 21, radially anti-circumflex branch brace 22, spring 23, radially anti-circumflex branch brace roller 24, fixed cover 25,
Directly pushing away spring 26, side pushes away spring 27, spring retaining sleeve 28, axially position roller 29, cone 30, axially position motor 31, circuit
Control system 32, connector 33.Spring 34, switch block 35, switch block fixed cover 36, central tube 37.
Embodiment
Detailed description for the present invention and technology contents, coordinate brief description of the drawings it is as follows, but accompanying drawing only provide reference with
Purposes of discussion, not for being any limitation as to the present invention.
Referring to the drawings 1-3, formula of helping pull a cart full-bore fracturing tool, including fracturing tool body, motor switch instrument, the electricity
Dynamic switching tools are located at fracturing tool body interior, top connection 2 that the fracturing tool body includes being sequentially connected from top to bottom,
Overcoat 7, lower contact 10, the fracturing tool inner body wall, which is provided with, cuts the He of sliding sleeve 6 that pin 8 temporarily links together
Turnbarrel 9, top connection upper end inwall connection orientation spool 1, the sliding sleeve upper end sets protecting against shock to cover 3, the cunning
T-shaped packing 5 and T-shaped packing retainer ring 4 are provided between set and top connection, the motor switch instrument is that can drive rotation
The device that sleeve and sliding sleeve are axially moved.The motor switch instrument includes positioner and Unscrew device, the positioning
Device includes axial direction positioning device, radial positioning device, rotary positioning apparatus, and the axial direction positioning device enters orientation spool
Locating slot, the rotary positioning apparatus enters the locating slot of turnbarrel.The axial direction positioning device includes axially position motor
31 and movement conversion mechanism, cone 30, axially position roller 29, the axially position motor passes through movement conversion mechanism and cone
Connection, the bottom surface of the cone is connected on axially position roller, and setting gradually side below the axially position roller pushes away spring
27th, straight to push away spring 26, straight push away sets spring retaining sleeve 28 on the outside of spring upper end, the radial positioning device includes radially anti-
Fixed cover 25, fixed cover are set above circumflex branch brace roller 24, radially anti-circumflex branch brace 22, the anti-circumflex branch brace roller of radial direction
Top pushes away spring to be straight, and radially anti-circumflex branch brace 22, the anti-circumflex branch of radial direction is provided below in the anti-circumflex branch brace roller of radial direction
Set above brace spring 23 simultaneously to be locked by anti-circumflex branch brace steady pin, the rotary positioning apparatus include swing roller 13,
Set above pivotal support arm 14, the swing roller and spring 15 is set on the inside of pivotal support arm, the pivotal support arm, it is described
Pivotal support arm is fixed by support arm steady pin 16.The Unscrew device includes motor 19 and torque boosting mechanism, led
To first 11, guide head overcoat 12, the motor rotation reinforcement output shaft rotation of the motor belt motor dynamic torque force-increasing mechanism, the motor
Rotation reinforcement output shaft and guide head overcoat are connected into together by turning arm steady pin 17, and guide head is fixed on guide head
In overcoat, the guide head overcoat is located at below rotary positioning apparatus, and the Unscrew device drives rotary positioning apparatus rotation
Turn, rotary positioning apparatus is driven on the outside of turnbarrel rotation, turnbarrel provided with trapezoidal external screw thread and trapezoidal interior spiral shell in lower contact
Line is meshed, and turnbarrel is axially moved while rotation, and turnbarrel is connected with sliding sleeve by cutting pin, is slided so driving
Set is axially moved.The upper end of the motor switch instrument is additionally provided with connector 33.Also include mechanical dragging switching tools, institute
Stating mechanical dragging switching tools includes central tube 37 and the switch block 35 being enclosed on the outside of central tube, the switch block and center
Spring 34 is cased between pipe, the switch block two ends are fixed on central tube by switch block fixed cover 36.
Formula of helping pull a cart first full-bore fracturing tool is lowered into well with sleeve pipe, under instrument in place after, pass through steel of logging well
Downhole electric switching tools are transported to by silk or continuous pipe needs the layer position top of pressure break, and ground control system is sent to axially fixed
The convert rotational motion of motor is cone 30 by position 31 1 signals of motor, the movement conversion mechanism of its axially position motor 31
It is axially moved, cone 30 promotes axial positioning roller 29 protruding, while compressed side pushes away spring 27, when axially position roller 29
After fully extended, more than the internal diameter of fracturing tool orientation spool 1, such downhole electric switching tools are just in formula full-bore pressure break of helping pull a cart
Accurate axially position is generated above instrument.Due to the swing roller 13 in downhole electric switching tools and the anti-circumflex branch support of radial direction
The distance between arm roller 24 and the locating slot in the orientation spool 1 and turnbarrel 9 in formula full-bore fracturing tool of helping pull a cart it
Between distance it is identical, so on the premise of downhole electric switching tools axially position, the rotation in downhole electric switching tools
Roller 13 and radially anti-circumflex branch brace roller 24 have respectively entered orientation spool 1 and rotation in formula full-bore fracturing tool of helping pull a cart
In locating slot in sleeve 9, radial positioning and rotational positioning, the He of swing roller 13 wherein in downhole electric switching tools are produced
Radially anti-circumflex branch brace roller 24 is constantly in open configuration under the force of a spring, and when running into necking down, swing roller 24 is pressed
Undergauge is to anti-circumflex branch brace 22 and spring 23, radially anti-the compression pivotal support arm 14 of circumflex branch brace roller 13 and spring 15, when entering
Enter into locating slot to strut the corresponding positioning of generation automatically.
Then 19 1 signals of motor are sent to by ground control system, motor is output to motor by torque boosting mechanism
Reinforcement output shaft 18 is rotated, because motor rotation reinforcement output shaft 18 and guide head overcoat 12 are fixed to by turning arm steady pin 17
Together, so driving guide head 11, pivotal support arm 14, spring 15, support arm steady pin 16 to rotate together, and swing roller 13
It is embedded in again in the locating slot in turnbarrel 9, so related turnbarrel 9 rotates together, the outside of turnbarrel 9 is provided with trapezoidal
External screw thread is meshed with trapezoidal internal thread in lower contact 10, and turnbarrel 9 is axially moved while rotation, and turnbarrel 9 is with sliding
Set 6 is connected by cutting pin 8, so driving sliding sleeve 6 to be axially moved, realizes the action of either on or off.
When can not be opened by motor switch help pull a cart formula full-bore fracturing tool when, mechanically dragged by coiled tubing tripping in
Under dynamic switching tools, mechanical dragging switching tools in place after, switch block 35 enters formula full-bore fracturing tool sliding sleeve 6 of helping pull a cart
In locating slot in, by drag switch block 35 drive sliding sleeve 6, then cut it is described cutting pin 8, realize mechanical switch or pass
Close.
Presently preferred embodiments of the present invention is the foregoing is only, is not used to limit the scope of the claims of the present invention, other are with this
The equivalence changes of the patent spirit of invention, all should all belong to the scope of the claims of the present invention.
Claims (6)
1. formula of helping pull a cart full-bore fracturing tool, it is characterised in that described electronic including fracturing tool body, motor switch instrument
Switching tools are located at fracturing tool body interior, top connection that the fracturing tool body includes being sequentially connected from top to bottom, outer
Set, lower contact, the fracturing tool inner body wall, which is provided with, cuts sliding sleeve and rotary sleeve that pin temporarily links together
Cylinder, top connection upper end inwall connection orientation spool, the sliding sleeve upper end sets protecting against shock set, the sliding sleeve and top connection
Between be provided with T-shaped packing and T-shaped packing retainer ring, the motor switch instrument is can drive turnbarrel and sliding sleeve axle
To the device of motion；The motor switch instrument includes positioner and Unscrew device, and the positioner is included axially
Positioner, radial positioning device, rotary positioning apparatus, the axial direction positioning device enter the locating slot of orientation spool, described
Rotary positioning apparatus enters the locating slot of turnbarrel.
2. formula full-bore fracturing tool according to claim 1 of helping pull a cart, it is characterised in that the axial direction positioning device includes
Axially position motor and movement conversion mechanism, cone, axially position roller, the axially position motor pass through movement conversion mechanism
It is connected with cone, the bottom surface of the cone is connected on axially position roller, side is set gradually below the axially position roller
Push away spring, directly push away spring, straight push away sets spring retaining sleeve on the outside of spring upper end, the radial positioning device includes radially anti-
Set above circumflex branch brace roller, radially anti-circumflex branch brace, the anti-circumflex branch brace roller of radial direction above fixed cover, fixed cover and be
Straight to push away spring, the anti-circumflex branch brace roller of radial direction is provided below above radially anti-circumflex branch brace, the anti-circumflex branch brace of radial direction
Spring is set and locked by anti-circumflex branch brace steady pin, the rotary positioning apparatus includes swing roller, pivotal support arm, institute
State and pivotal support arm is set above swing roller, spring is set on the inside of the pivotal support arm, the pivotal support arm passes through branch
Brace steady pin is fixed.
3. formula full-bore fracturing tool according to claim 1 of helping pull a cart, it is characterised in that the Unscrew device includes
Motor and torque boosting mechanism, guide head, guide head overcoat, the motor rotation reinforcement of the motor belt motor dynamic torque force-increasing mechanism are defeated
Shaft is rotated, and the motor rotation reinforcement output shaft and guide head overcoat are connected into together by turning arm steady pin, are led
It is fixed on to head in guide head overcoat, the guide head overcoat is located at below rotary positioning apparatus, the Unscrew device band
Dynamic rotary positioning apparatus rotation, rotary positioning apparatus drive on the outside of turnbarrel rotation, turnbarrel provided with trapezoidal external screw thread with
Trapezoidal internal thread is meshed in lower contact, and turnbarrel is axially moved while rotation, and turnbarrel passes through break pin with sliding sleeve
Nail connection, so driving sliding sleeve to be axially moved.
4. formula full-bore fracturing tool according to claim 1 of helping pull a cart, it is characterised in that also including mechanical dragging switch
Instrument, the mechanical dragging switching tools include central tube and the switch block that is enclosed on the outside of central tube, the switch block and
Spring is cased between central tube, the switch block two ends are fixed on central tube by switch block fixed cover.
5. formula full-bore fracturing tool according to claim 1 of helping pull a cart, it is characterised in that the motor switch instrument it is upper
End is additionally provided with connector.
6. a kind of control method for formula full-bore fracturing tool of helping pull a cart, its step is：
Formula of helping pull a cart first full-bore fracturing tool is lowered into well with sleeve pipe, under instrument in place after, by logging steel wire or
Downhole electric switching tools are transported to by continuous pipe needs the layer position top of pressure break, starts axially position motor, its axially position
The movement conversion mechanism of motor by the axial movement that the convert rotational motion of motor is cone, cone promote axial positioning roller to
Overhang, while compressed side pushes away spring, after axially position roller is fully extended, more than fracturing tool orientation spool internal diameter, this
Sample downhole electric switching tools just generate accurate axially position above formula full-bore fracturing tool of helping pull a cart, due to underground electricity
The distance between swing roller and the anti-circumflex branch brace roller of radial direction in dynamic switching tools with formula full-bore fracturing tool of helping pull a cart
Orientation spool and turnbarrel in the distance between locating slot it is identical, so in downhole electric switching tools axially position
Under the premise of, swing roller and the anti-circumflex branch brace roller of radial direction in downhole electric switching tools have respectively entered formula full-bore of helping pull a cart
In the locating slot in orientation spool and turnbarrel in fracturing tool, radial positioning and rotational positioning, wherein underground electricity are produced
Swing roller and the anti-circumflex branch brace roller of radial direction in dynamic switching tools are constantly in open configuration under the force of a spring, when
Swing roller compression radially anti-circumflex branch brace and spring when running into necking down, radially anti-circumflex branch brace roller compression pivotal support arm and
Spring, the corresponding positioning of generation will be strutted automatically when entering in locating slot；
Then motor is started, motor is output to motor by torque boosting mechanism and rotates reinforcement output shaft, because turning arm is fixed
Motor is rotated pin into reinforcement output shaft and guide head overcoat is secured together, so driving guide head, pivotal support arm, support arm
Steady pin is rotated together, and swing roller is embedded in the locating slot in turnbarrel, so related turnbarrel revolves together
Turn, be meshed on the outside of turnbarrel provided with trapezoidal external screw thread with trapezoidal internal thread in lower contact, axle while turnbarrel rotates
To motion, turnbarrel is connected with sliding sleeve by cutting pin, so driving sliding sleeve to be axially moved, realizes the dynamic of either on or off
Make；
When can not be opened by motor switch help pull a cart formula full-bore fracturing tool when, by coiled tubing tripping in mechanically dragging open
Under pass instrument, mechanical dragging switching tools in place after, switch block enters determining in formula full-bore fracturing tool sliding sleeve of helping pull a cart
In the groove of position, sliding sleeve is driven by dragging switch block, the cutting pin is then cut, realizes mechanical switch or closing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410645321.7A CN105041283B (en) | 2014-11-10 | 2014-11-10 | Formula of helping pull a cart full-bore fracturing tool and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410645321.7A CN105041283B (en) | 2014-11-10 | 2014-11-10 | Formula of helping pull a cart full-bore fracturing tool and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105041283A CN105041283A (en) | 2015-11-11 |
| CN105041283B true CN105041283B (en) | 2017-09-15 |
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| CN201410645321.7A Active CN105041283B (en) | 2014-11-10 | 2014-11-10 | Formula of helping pull a cart full-bore fracturing tool and control method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267965B (en) * | 2017-07-17 | 2020-08-11 | 中石化石油工程技术服务有限公司 | Underground electric control sliding sleeve opening and closing tool |
| CN111155978B (en) * | 2020-02-23 | 2020-08-25 | 吉林金祚石油科技服务有限公司 | Oil field horizontal well multistage fracturing tubular column structure |
| CN115263263A (en) * | 2022-07-27 | 2022-11-01 | 西安航天化学动力有限公司 | Controllable shock wave fracturing device and method |
| CN117307108B (en) * | 2023-11-30 | 2024-02-02 | 胜利油田新大通石油技术有限责任公司 | Downhole rotation positioning type oil pipe punching device and application method thereof |
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| US4898241A (en) * | 1986-12-31 | 1990-02-06 | Institut Francais Du Petrole | Method and device for taking measurements and/or carrying out interventions in a well subjected to hydraulic compression |
| CN102330546A (en) * | 2011-09-30 | 2012-01-25 | 中国石油化工股份有限公司 | Open hole staged fracturing well completion pipe string provided with controllable valve and hydraulic control switching pipe string |
| CN202125289U (en) * | 2011-06-22 | 2012-01-25 | 中国石油化工股份有限公司 | Sliding sleeve assembly of selective switch |
| CN103321628A (en) * | 2013-06-09 | 2013-09-25 | 中国石油化工股份有限公司 | Electric intelligent switching sliding sleeve |
| CN103806888A (en) * | 2012-11-12 | 2014-05-21 | 中国石油天然气股份有限公司 | Downhole infinite level digital control fracture sliding sleeve |
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2014
- 2014-11-10 CN CN201410645321.7A patent/CN105041283B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4898241A (en) * | 1986-12-31 | 1990-02-06 | Institut Francais Du Petrole | Method and device for taking measurements and/or carrying out interventions in a well subjected to hydraulic compression |
| CN202125289U (en) * | 2011-06-22 | 2012-01-25 | 中国石油化工股份有限公司 | Sliding sleeve assembly of selective switch |
| CN102330546A (en) * | 2011-09-30 | 2012-01-25 | 中国石油化工股份有限公司 | Open hole staged fracturing well completion pipe string provided with controllable valve and hydraulic control switching pipe string |
| CN103806888A (en) * | 2012-11-12 | 2014-05-21 | 中国石油天然气股份有限公司 | Downhole infinite level digital control fracture sliding sleeve |
| CN103321628A (en) * | 2013-06-09 | 2013-09-25 | 中国石油化工股份有限公司 | Electric intelligent switching sliding sleeve |
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| Publication number | Publication date |
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| CN105041283A (en) | 2015-11-11 |
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