CN108716374B - Special feeding tool for packer blanking plug of well completion - Google Patents
Special feeding tool for packer blanking plug of well completion Download PDFInfo
- Publication number
- CN108716374B CN108716374B CN201810265023.3A CN201810265023A CN108716374B CN 108716374 B CN108716374 B CN 108716374B CN 201810265023 A CN201810265023 A CN 201810265023A CN 108716374 B CN108716374 B CN 108716374B
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- connecting cylinder
- outer sleeve
- ball seat
- positioning
- completion packer
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- 210000000078 claw Anatomy 0.000 claims abstract description 32
- 238000010008 shearing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002343 natural gas well Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/06—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting packers
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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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses a special feeding tool for a packer plug of a well completion, which consists of an inner layer, a middle layer and an outer layer, wherein the outer layer comprises an upper joint and an outer sleeve which are mutually connected; a step surface is arranged on the inner side of the lower end of the outer sleeve; the connecting cylinder is arranged in the outer sleeve, the connecting cylinder and the outer sleeve are fixed through a positioning ball, the lower end of the connecting cylinder is connected with a positioning claw through a positioning pin, and step surfaces are arranged on the outer side and the inner side of the lower end of the connecting cylinder; the ball seat sets up in connecting cylinder upper end inboard, it is fixed through the shear pin between ball seat and the connecting cylinder. The invention can realize the operation of entering and releasing the well of the packer.
Description
Technical Field
The invention belongs to the technical field of petroleum and natural gas well completion, and particularly relates to a special feeding tool for a well completion packer plug.
Background
When the well completion packer is used for isolation and plugging, a packer tool is needed for plugging, the packer can be sealed in a pressure-bearing mode from top to bottom after plugging, and the cleanness of different intervals in a shaft is guaranteed. The blanking plug can be sent into the pole with the blanking plug in advance before carrying out the operation and advance on the blanking plug retrieves the pole, it uses to send into to have the pin hole on the pole, the hole aligns and installs the shear pin with retrieving pole upper groove, because retrieving pole and blanking plug use pin joint when going into the well, the atress is limited, meet the interior tubular column of well and block, perhaps go into the well too fast, external force acts on shear pin position, often meet the blanking plug and do not reach the target position, take place to cut with sending into the pole in advance, the separation, the operation is failed, need salvage the blanking plug after the well is gone into again, it is slow likewise for the scene to come a lot of inconveniences to go into, mainly time is with.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a special feeding tool for a completion packer plug, which can realize the operation of entering and releasing the completion packer plug.
The purpose of the invention is realized by the following technical scheme.
The special feeding tool for the completion packer plug comprises an inner layer, a middle layer and an outer layer, wherein the outer layer comprises an upper joint and an outer sleeve which are mutually connected, the middle layer comprises a connecting cylinder and a positioning claw, and the inner layer comprises a ball seat;
a step surface is arranged on the inner side of the lower end of the outer sleeve; the connecting cylinder is arranged in the outer sleeve, the connecting cylinder and the outer sleeve are fixed through a positioning ball, the lower end of the connecting cylinder is connected with a positioning claw through a positioning pin, and step surfaces are arranged on the outer side and the inner side of the lower end of the connecting cylinder; the ball seat sets up in connecting cylinder upper end inboard, it is fixed through the shear pin between ball seat and the connecting cylinder.
The upper end of the upper joint is provided with an internal thread used for being connected with an oil pipe column, and the lower end of the upper joint is provided with an internal thread used for being connected with an outer sleeve.
The outer sleeve upper end is provided with the external screw thread, outer sleeve upper end and connecting cylinder upper end are provided with the circular port of one-to-one alignment for the fixing of installation location ball realization outer sleeve and connecting cylinder.
The outer sleeve and the connecting cylinder are provided with strip-shaped hole grooves, the upper portion and the lower portion of the connecting cylinder are provided with strip-shaped hole grooves, the size of each strip-shaped hole groove is the same, and the strip-shaped hole grooves in the lower portion of the connecting cylinder are aligned with the strip-shaped hole grooves of the outer sleeve before the connecting cylinder is lowered into the well.
And the inner side of the lower end of each positioning claw is provided with an inclined step for fixing a blanking plug during the working process of going into a well.
The ball seat and the connecting cylinder are provided with pin holes which are aligned one by one and used for installing shear pins to realize the fixation of the connecting cylinder and the ball seat.
The step surface on the inner side of the lower end of the connecting cylinder is used for limiting the ball seat moving downwards to the step surface on the inner side, and the axial limiting of the connecting cylinder after moving downwards is realized through the matching of the step surface on the outer side of the lower end of the connecting cylinder and the step surface on the inner side of the lower end of the outer sleeve.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
(1) the ball seat is mainly used for limiting the positioning ball 3, all parts of the feeding tool are relatively fixed when the shearing pin is not sheared, and when the ball seat is sheared to move downwards under force, the special feeding tool can be used for releasing the hand.
(2) The positioning ball is mainly used for limiting the outer sleeve and the connecting cylinder and keeps relatively fixed, the positioning ball loses the limit of the ball seat during the operation of taking off the hand and falls into the ball seat, and the outer sleeve and the connecting cylinder can axially and relatively move.
(3) The outer sleeve is mainly used for connecting the upper joint, the limiting positioning claw and the connecting cylinder, and the inner step surface at the lower end of the outer sleeve can limit the moving distance of the connecting cylinder when a special feeding tool is released from a hand.
(4) The connecting cylinder is mainly used for limiting the positioning claw to move up and down, the positioning claw is guaranteed to be always limited between the outer sleeve and the connecting cylinder in the process of going into the well, when the feeding tool is separated from the blanking plug, the connecting cylinder moves down, the positioning claw loses the limiting position, and the positioning claw is separated from the blanking plug.
(5) The positioning pin is mainly used for fixedly connecting the positioning claw and the connecting cylinder, and the limitation on the degree of freedom of the positioning claw is realized.
(6) The positioning claw is mainly used for fixing a blanking plug tool, the blanking plug and the positioning claw are guaranteed to be fixed all the time in the process of downhole operation, and the positioning claw and the blanking plug are separated after the blanking plug is put in place.
(7) The invention adopts the dead locking mode of the positioning claw to connect the blanking plug, so that the blanking plug can be quickly lowered without being limited by a tool structure when being lowered into the well, the blanking plug is prevented from falling off by external force in the process of lowering the well, the operation risk is greatly reduced, the field operation time is saved by at least more than 70 percent, and the economic benefit is very obvious.
(8) The hydraulic pressure releasing device adopts a hydraulic pressure releasing structural design, realizes the shearing of the ball seat by throwing the pressure-building ball, separates the positioning claw from the outer sleeve, ensures the smooth releasing of the inner inclined surface step design of the positioning claw from the groove of the blanking plug, and realizes the releasing link control on site.
Drawings
FIG. 1 is a schematic view of a running tool specific to the completion packer plug of the present invention;
FIG. 2 is a schematic representation of the present invention completion packer plug specialized running tool hands-off;
FIG. 3 is a schematic view of a top sub of the present invention; (a) top view, (b) cross-sectional view;
FIG. 4 is a schematic view of a ball seat of the present invention; (a) 3 bottom 3 view 3, 3 ( 3 b 3) 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3; 3
FIG. 5 is a schematic view of a detent ball of the present invention;
FIG. 6 is a schematic view of an outer sleeve according to the present invention; (a) top view, (B) cross-sectional view B-B;
FIG. 7 is a schematic view of a connector barrel of the present invention; (a) top view, (b) cross-sectional view C-C;
FIG. 8 is a cross-sectional view of a locating pin according to the present invention;
FIG. 9 is a schematic view of a positioning pawl according to the present invention; (a) bottom view, (b) front cross-sectional view, (c) top view;
FIG. 10 is a schematic view of the completion packer plug specific running tool and plug assembly of the present invention.
1, an upper joint; 2, a ball seat; 3, positioning a ball; 4 an outer sleeve; 5 connecting the cylinder; 6, positioning pins; 7, positioning claws; 8, pressing the ball; 9 a blanking plug; 10 shear pins.
Detailed Description
For a further understanding of the contents, features and effects of the invention, reference should be made to the following examples, which are set forth to illustrate, but are not to be construed as the limit of the invention.
The special running tool for the completion packer disclosed by the invention is composed of an inner layer, a middle layer and an outer layer, as shown in figures 1-10, wherein the outer layer comprises an upper joint 1 and an outer sleeve 4 which are mutually connected, the middle layer comprises a connecting cylinder 5 and a positioning claw 7, and the inner layer comprises a ball seat 2.
The upper joint 1 is mainly used for connecting a tubing string and an outer sleeve 4. The upper end of the upper joint 1 is provided with internal threads which are used for being connected with an oil pipe column during operation, the lower end of the upper joint is provided with internal threads, and the upper end of the outer sleeve 4 is provided with external threads which are used for being in threaded connection with the upper joint 1.
The connecting cylinder 5 is arranged inside the outer sleeve 4, and the connecting cylinder 5 and the outer sleeve 4 are fixedly connected through the positioning balls 3. The upper end of the outer sleeve 4 and the upper end of the connecting cylinder 5 are provided with round holes which are aligned one by one and used for installing the positioning balls 3, so that the fixation, the contact matching and the relative position fixation of the outer sleeve 4 and the connecting cylinder 5 are realized. The spacing outer sleeve 4 of 3 mainly used of location balls and connecting cylinder 5 do not take place relative displacement when making it go into the well, keep relatively fixed, and it is spacing that the outside circular port diameter that the direction of movement of location ball 3 passes through outer sleeve 4 is spacing, and it is spacing inwards through ball seat 2, makes it break away from in unable follow connecting cylinder 5 and the circular port of outer sleeve 4, and location ball 3 loses the spacing of ball seat 2 when taking off the hand operation, falls into ball seat 2, but outer sleeve 4 and connecting cylinder 5 axial relative displacement. Preferably, four circular holes are distributed in the outer sleeve 4 and the connecting cylinder 5 at equal intervals respectively, and the four positioning balls 3 are arranged and are respectively installed on the circular holes matched with the connecting cylinder 5 and the outer sleeve 4.
5 lower extremes of connecting cylinder pass through locating pin 6 and connect locating pawl 7, locating pawl 7 equidistance distributes at 5 lower extremes of connecting cylinder, and the lower extreme inboard of every locating pawl 7 all is provided with the inclined plane step, and the recovery pole cooperation of locating pawl 7 and blanking plug 9 forms fixed relation when the work of going into the well for fixed blanking plug 9, the locating pawl 7 outside forms spacingly with 4 inlayer contacts of outer sleeve, guarantees that the blanking plug 9 goes into the well in-process can not take place the well accident because of exogenic action. Preferably, four positioning claws 7 are provided. The positioning pin 6 is mainly used for fixedly connecting the positioning claw 7 with the connecting cylinder 5, and the freedom degree of the positioning claw 7 is limited. The positioning claw 7 is mainly used for fixing the blanking plug 9, the blanking plug 9 and the positioning claw 7 are guaranteed to be fixed all the time in the process of downhole operation, and when the blanking plug 9 is put in place, the positioning claw 7 is separated from the blanking plug 9. The connecting cylinder 5 is mainly used for limiting the positioning claw 7 to move up and down, and the positioning claw 7 is guaranteed to be always limited between the outer sleeve 4 and the connecting cylinder 5 in the process of going down the well.
The inner side of the lower end of the outer sleeve 4 is provided with a step surface, and the outer side and the inner side of the lower end of the connecting cylinder 5 are both provided with step surfaces. The step surface on the inner side of the lower end of the connecting cylinder 5 is used for limiting the ball seat 2 moving downwards to the step surface on the inner side, and the step surface on the outer side of the lower end of the connecting cylinder 5 is matched with the step surface on the inner side of the lower end of the outer sleeve 4 to limit the connecting cylinder 5 moving downwards.
The outer sleeve 4 and the connecting cylinder 5 are both provided with strip-shaped hole grooves, the upper portion and the lower portion of the connecting cylinder 5 are both provided with strip-shaped hole grooves, and the size of each strip-shaped hole groove is the same. Before going into the well, the rectangular shape hole groove of 5 lower parts of connecting cylinder aligns with the rectangular shape hole groove of outer sleeve 4, the inside and outside circulation of mainly used well tubular column, and circulation pore area is greater than tubular column internal diameter area that goes into the well, prevent that pressure cycle is too high, after the blanking plug 9 sent into to target in place, it need circulate to lift the tubular column, ball seat 2 dies the circulation internal diameter, the coincidence is removed with the rectangular shape hole groove of outer sleeve 4 on 5 upper portions of connecting cylinder, form new pore, the unobstructed of inside and outside circulation when guaranteeing the tubular column to retrieve.
The running tool special for the completion packer blanking plug comprises the following working processes:
when the special feeding tool for the completion packer blanking plug works, the blanking plug 9 is pressed into an inner barrel of the completion packer by pressing down a certain tonnage to form sealing isolation, whether the blanking plug 9 is matched with the packer or not is judged by lifting tonnage display and a forward pressing pressure test, the special feeding tool for the completion packer blanking plug is thrown into a pressure-building ball 8 in a drill rod or an oil pipe string through a platform wellhead to act on the central position of a ball seat 2 to realize sealing and forward pressing, a shearing pin 10 on the ball seat 2 is sheared when the pressure reaches a certain value, the ball seat 2 is separated from a connecting barrel 5 to generate displacement, the ball seat 2 moves down to the inner step surface position of the connecting barrel 5 to stop, four positioning balls 3 also fall into the ball seat 2 along with the ball seat 2, the connecting barrel 5 and an outer sleeve 4 generate relative displacement up and down by lifting the pipe string, and the radial supporting force outside a positioning claw 7 disappears, the step surface is provided with a small-angle inclined surface, the positioning claw 7 can be separated from the blanking plug 9 after being subjected to lifting force, the hand releasing operation of a special feeding tool for the blanking plug of the well completion packer and the blanking plug 9 is completed, and the smooth feeding and hand releasing operation of the blanking plug 9 is realized.
While the present invention has been described in terms of its functions and operations with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise functions and operations described above, and that the above-described embodiments are illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope or spirit of the invention as defined by the appended claims.
Claims (7)
1. A special feeding tool for a completion packer plug is characterized by comprising an inner layer, a middle layer and an outer layer, wherein the outer layer comprises an upper joint (1) and an outer sleeve (4) which are mutually connected, the middle layer comprises a connecting cylinder (5) and a positioning claw (7), and the inner layer comprises a ball seat (2);
a step surface is arranged on the inner side of the lower end of the outer sleeve (4); the connecting cylinder (5) is arranged inside the outer sleeve (4), the connecting cylinder (5) and the outer sleeve (4) are fixed through a positioning ball (3), the lower end of the connecting cylinder (5) is connected with a positioning claw (7) through a positioning pin (6), and the outer side and the inner side of the lower end of the connecting cylinder (5) are provided with step surfaces; the ball seat (2) is arranged on the inner side of the upper end of the connecting cylinder (5), and the ball seat (2) and the connecting cylinder (5) are fixed through a shearing pin (10);
the fixing device is characterized in that circular holes aligned one by one are formed in the upper end of the outer sleeve (4) and the upper end of the connecting cylinder (5) and used for installing the positioning balls (3), the diameter of the circular hole of the outer sleeve (4) is limited in the outward moving direction of the positioning balls (3), the circular hole is limited in the inward moving direction through the ball seat (2), and the outer sleeve (4) and the connecting cylinder (5) are fixed.
2. A running tool dedicated to a completion packer plug according to claim 1, characterized in that the upper end of the upper sub (1) is provided with an internal thread for connection to a tubing string and the lower end is provided with an internal thread for connection to an outer sleeve (4).
3. A completion packer plug dedicated running tool according to claim 1, characterised in that the outer sleeve (4) is provided with an external thread on its upper end.
4. The running tool special for a completion packer plug according to claim 1, wherein the outer sleeve (4) and the connecting cylinder (5) are provided with elongated hole grooves, the upper part and the lower part of the connecting cylinder (5) are provided with elongated hole grooves, each elongated hole groove has the same size, and the elongated hole grooves on the lower part of the connecting cylinder (5) are aligned with the elongated hole grooves of the outer sleeve (4) before downhole.
5. A running tool dedicated to a completion packer plug according to claim 1, characterised in that each of the positioning claws (7) is provided with a bevel step on the inside of its lower end for fixing the plug (9) during downhole operation.
6. A completion packer plug dedicated running tool according to claim 1, c h a r a c t e r i z e d in that the ball seat (2) and the connector barrel (5) are provided with pin holes aligned one to one for mounting shear pins (10) for securing the connector barrel (5) and the ball seat (2).
7. The special running tool for the completion packer plugging device according to claim 1, wherein the stepped surface on the inner side of the lower end of the connecting cylinder (5) is used for limiting the ball seat (2) to move downwards to the inner stepped surface, and the axial limiting after the connecting cylinder (5) moves downwards is realized through the matching of the stepped surface on the outer side of the lower end of the connecting cylinder (5) and the stepped surface on the inner side of the lower end of the outer sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810265023.3A CN108716374B (en) | 2018-03-28 | 2018-03-28 | Special feeding tool for packer blanking plug of well completion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810265023.3A CN108716374B (en) | 2018-03-28 | 2018-03-28 | Special feeding tool for packer blanking plug of well completion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108716374A CN108716374A (en) | 2018-10-30 |
| CN108716374B true CN108716374B (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810265023.3A Active CN108716374B (en) | 2018-03-28 | 2018-03-28 | Special feeding tool for packer blanking plug of well completion |
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| Country | Link |
|---|---|
| CN (1) | CN108716374B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116138B (en) * | 2010-12-31 | 2014-01-01 | 中国石油天然气集团公司 | Tapered release type tubing plug |
| US8851167B2 (en) * | 2011-03-04 | 2014-10-07 | Schlumberger Technology Corporation | Mechanical liner drilling cementing system |
| CN102587852B (en) * | 2012-03-18 | 2014-03-12 | 荆州市赛瑞能源技术有限公司 | Drilling liner hanger and setting tool |
| US9920584B2 (en) * | 2012-11-13 | 2018-03-20 | Halliburton Energy Services, Inc. | Collet lock assembly and method for downhole load diversion |
| CN103742102B (en) * | 2014-01-09 | 2016-04-13 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Presetting system blanking plug and input thereof, fishing tool |
| CN107269241A (en) * | 2017-07-12 | 2017-10-20 | 天津盛鑫华瑞石油技术有限公司 | Can guide type hydraulic releasing tool |
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2018
- 2018-03-28 CN CN201810265023.3A patent/CN108716374B/en active Active
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| CN108716374A (en) | 2018-10-30 |
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