CN112031699A - Slip assembly capable of being rapidly milled and used for downhole tool - Google Patents
Slip assembly capable of being rapidly milled and used for downhole tool Download PDFInfo
- Publication number
- CN112031699A CN112031699A CN202010978358.7A CN202010978358A CN112031699A CN 112031699 A CN112031699 A CN 112031699A CN 202010978358 A CN202010978358 A CN 202010978358A CN 112031699 A CN112031699 A CN 112031699A
- Authority
- CN
- China
- Prior art keywords
- slip
- base body
- slip base
- cone
- downhole tool
- 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.)
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Classifications
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- 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
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
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- 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
- E21B29/00—Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
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- 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
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
- E21B33/134—Bridging plugs
Abstract
The invention relates to the field of oil field oil extraction engineering, and belongs to a slip assembly capable of being quickly milled and used for an underground tool. The invention solves the problem that the integral slips and the segmented slips used on the common bridge plug are not easy to mill, and comprises the following steps: the slip body comprises a cone body (1), a main body assembly and an inclined body (5), wherein the cone body (1) is used for expanding and supporting the slip base body (3) during setting, and meanwhile, the circumferential displacement of the slip base body (3) is limited; the main body component is inserted and installed between the cone (1) and the inclined body (5); the inclined body (5) is used for supporting the tail part of the slip base body (3); the main body component comprises a fixing ring (2), a slip base body (3) and a slip sheet (4); wherein the slip base body (3) is hooped into a circle by the fixing ring (2), and the slip clamping piece (4) is inserted on the upper surface of the slip base body (3). The invention has the advantages of simple structure, safety, reliability, rapid milling, small volume of the rest part of the slip base body after milling and the like.
Description
Technical Field
The invention relates to the field of oil field oil extraction engineering, and belongs to a slip assembly capable of being quickly milled and used for an underground tool.
Background
At present, a common slip module on a bridge plug tool is an integral slip module or a segmented slip module, wherein an anti-rotation measure is not arranged between a slip base body and a conical cone in the integral slip module, and the rapid milling and deblocking are difficult. The front part of a slip base body in the segmented slip module is provided with a short inclined plane to be matched with a cone for preventing rotation, but the tail part of the slip base body is provided with a long straight plane, only the part of the slip base body, which is overlapped with the inclined plane of the cone, can be ground during milling, and the volume of the part of the remaining straight plane is large, so that the milling efficiency is influenced.
Disclosure of Invention
The invention aims to solve the problem that an integral slip and a segmented slip used on a common bridge plug are not easy to mill, and provides a slip assembly capable of rapidly milling for a downhole tool, which has a simple structure, is safe and reliable, and can rapidly mill.
The technical scheme of the invention is as follows: a rapid millable slip assembly for a downhole tool comprising:
the cone is used for expanding and supporting the slip base body during setting and limiting circumferential displacement of the slip base body;
the main body assembly is inserted and installed between the cone and the inclined body; and
the inclined body is used for supporting the tail part of the slip base body;
the main body assembly comprises a fixing ring, a slip base body and a slip sheet; the slip base body is hooped into a circle by the fixing ring, and the slip sheets are inserted on the upper surface of the slip base body.
The cone is spliced with the slip base body; the fixing ring hoops the slip base body into a circle, the outer surface of the slip base body is inserted with the slip piece, and the tail of the slip base body is in limit connection with the upper part of the inclined body.
The tail part of the slip base body is in inserted connection with the guide rail groove at the upper part of the inclined body in a limiting way through a guide rail.
Eight long inclined planes and eight shearing columns are uniformly distributed at the lower part of the cone.
The lower surface of the slip base body is provided with a long inclined plane, and the front part and the rear part of the slip base body are provided with three auxiliary crushing grooves.
An auxiliary crushing groove is longitudinally distributed in the middle of the upper surface of the slip sheet.
Compared with the prior art, the invention has the following advantages:
1) the structure is simple, and batch production and assembly are easy;
2) the safety and reliability are realized, and the advanced setting sealing caused by collision in the well descending process is effectively prevented;
3) when needing to be got rid of in the well, but the milling deblocking fast, during milling, slips base member and slips piece are easily broken into the fritter, improve milling efficiency.
Description of the drawings: fig. 1 is a schematic structural diagram of the present invention, fig. 2 is a schematic structural diagram of a cone 1, fig. 3 is a schematic structural diagram of a slip base body 3 in a front view, fig. 4 is a schematic structural diagram of a slip base body 3 in a top view, and fig. 5 is a schematic structural diagram of a slip sheet 4.
In the figure, 1-cone, 2-fixed ring, 3-slip base body, 4-slip sheet, 5-italic, 1-1-long inclined plane, 1-2-shearing column, 3-1-long inclined plane, 3-2-auxiliary crushing groove of slip base body 3 and 4-1-auxiliary crushing groove of slip sheet 4.
The specific implementation mode is as follows: the invention will be described in more detail below with reference to the accompanying drawings, a well
The quick millable slip assembly of the lower tool comprises:
the cone 1 is used for expanding and supporting the slip base body 3 during setting and limiting circumferential displacement of the slip base body 3; the main body component is inserted and installed between the cone 1 and the inclined body 5; and an inclined body 5, wherein the inclined body 5 is used for supporting the tail part of the slip base body 3;
the main body component comprises a fixing ring 2, a slip base body 3 and a slip sheet 4; wherein the fixing ring 2 hoops the slip base body 3 into a circle, and the slip clamping piece 4 is inserted on the upper surface of the slip base body 3.
The cone 1 is spliced with the slip base body 3; eight slips bases 3 are hooped into a circle by the fixing ring 2, the slips 4 are inserted into the outer surface of the slips base 3, and the tail part of the slips base 3 is in limit connection with the upper part of the inclined body 5.
The tail part of the slip base body 3 is in inserted connection with a guide rail groove at the upper part of the inclined body 5 in a limiting way through a guide rail.
Eight long inclined planes 1-1 and eight shear columns 1-2 are uniformly distributed at the lower part of the cone 1.
The lower surface of the slip base body 3 is provided with a long inclined plane 3-1, and the front part and the rear part are provided with three auxiliary crushing grooves 3-2.
An auxiliary crushing groove 4-1 is longitudinally distributed in the middle of the upper surface of the tile clamping piece 4.
When the bridge plug is used on site, the bridge plug provided by the invention is set after being lowered into a well to a designed depth. In the setting process, a cone 1 moves downwards, a front shearing column 1-2 shears a fixing ring 2 which hoops a slip base body 3, a front long inclined plane 3-1 of the slip base body 3 slides along the front long inclined plane 1-1 of the cone 1, a tail guide rail of the slip base body 3 slides outwards along an upper guide rail groove of an inclined body 5, and a slip sheet 4 inserted in the outer surface of the slip base body gradually contacts with the inner wall of a sleeve along with radial expansion movement of the slip base body 3, so that the bridge plug is anchored in the sleeve. During milling, because the long inclined plane 1-1 of the cone 1 and the long inclined plane 3-1 of the slip base body 3 are completely overlapped, only a very short part of the slip base body 3 is not overlapped with the cone 1, most of the cone 1 and the slip base body 3 can be milled, and a small amount of residue with small volume is left, meanwhile, because the auxiliary crushing grooves 3-2 are arranged in the front and at the back of the slip base body 3, the auxiliary crushing grooves 4-1 are longitudinally distributed on the outer surface of the slip sheet 4, the slip sheet can be rapidly crushed into small blocks or small pieces during milling, and the milling efficiency is improved.
Claims (6)
1. A can mill slips subassembly fast for downhole tool which characterized in that: the method comprises the following steps:
the cone (1) is used for expanding and supporting the slip base body (3) during setting and limiting circumferential displacement of the slip base body (3);
the main body component is inserted and installed between the cone (1) and the inclined body (5); and
the inclined body (5) is used for supporting the tail part of the slip base body (3);
the main body component comprises a fixing ring (2), a slip base body (3) and a slip sheet (4); wherein the slip base body (3) is hooped into a circle by the fixing ring (2), and the slip clamping piece (4) is inserted on the upper surface of the slip base body (3).
2. The rapidly millable slip assembly for a downhole tool of claim 1, wherein: the cone (1) is spliced with the slip base body (3); the fixing ring (2) hoops the slip base body (3) into a circle, the outer surface of the slip base body (3) is inserted with the slip piece (4), and the tail of the slip base body (3) is in limit connection with the upper part of the inclined body (5).
3. The rapidly millable slip assembly for a downhole tool of claim 1, wherein: the tail part of the slip base body (3) is in inserted connection with a guide rail groove at the upper part of the inclined body (5) in a limiting way through a guide rail.
4. The rapidly millable slip assembly for a downhole tool of claim 1, wherein: eight long inclined planes (1-1) and eight shear columns (1-2) are uniformly distributed at the lower part of the cone (1).
5. The rapidly millable slip assembly for a downhole tool of claim 1, wherein: the lower surface of the slip base body (3) is provided with a long inclined plane (3-1), and the front part and the rear part are provided with three auxiliary crushing grooves (3-2).
6. The rapidly millable slip assembly for a downhole tool of claim 1, wherein: an auxiliary crushing groove (4-1) is longitudinally distributed in the middle of the upper surface of the blocking piece (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010978358.7A CN112031699B (en) | 2020-09-17 | 2020-09-17 | Slip assembly capable of being rapidly milled and used for downhole tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010978358.7A CN112031699B (en) | 2020-09-17 | 2020-09-17 | Slip assembly capable of being rapidly milled and used for downhole tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112031699A true CN112031699A (en) | 2020-12-04 |
| CN112031699B CN112031699B (en) | 2022-07-19 |
Family
ID=73589639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010978358.7A Active CN112031699B (en) | 2020-09-17 | 2020-09-17 | Slip assembly capable of being rapidly milled and used for downhole tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112031699B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070102165A1 (en) * | 2005-11-10 | 2007-05-10 | Bj Services Company | Self centralizing non-rotational slip and cone system for downhole tools |
| US20090038808A1 (en) * | 2007-08-08 | 2009-02-12 | Baker Hughes Incorporated | Tangentially-loaded high-load retrievable slip system |
| CA2648116A1 (en) * | 2007-12-31 | 2009-06-30 | Piro Shkurti | Drillable bridge plug |
| CN203769712U (en) * | 2014-01-21 | 2014-08-13 | 中国海洋石油总公司 | Rapid and drillable packer made of composite materials |
| CN104879090A (en) * | 2015-06-12 | 2015-09-02 | 西南石油大学 | Fast-drilling composite bridge plug adopting single-slip double-acting structure |
| CN105545237A (en) * | 2016-02-02 | 2016-05-04 | 四机赛瓦石油钻采设备有限公司 | Anti-rotation anchoring structure beneficial to drilling |
| CN105735940A (en) * | 2014-12-12 | 2016-07-06 | 中国石油天然气股份有限公司 | Bridge plug |
| US20170101835A1 (en) * | 2015-10-09 | 2017-04-13 | General Plastics & Composites, L.P. | Slip assembly for downhole tools |
| CN110017117A (en) * | 2019-05-21 | 2019-07-16 | 卢晓东 | A kind of solubility bridge plug |
| CN111101889A (en) * | 2019-12-05 | 2020-05-05 | 四机赛瓦石油钻采设备有限公司 | Light metal fast drilling bridge plug |
-
2020
- 2020-09-17 CN CN202010978358.7A patent/CN112031699B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070102165A1 (en) * | 2005-11-10 | 2007-05-10 | Bj Services Company | Self centralizing non-rotational slip and cone system for downhole tools |
| US20090038808A1 (en) * | 2007-08-08 | 2009-02-12 | Baker Hughes Incorporated | Tangentially-loaded high-load retrievable slip system |
| CA2648116A1 (en) * | 2007-12-31 | 2009-06-30 | Piro Shkurti | Drillable bridge plug |
| CN203769712U (en) * | 2014-01-21 | 2014-08-13 | 中国海洋石油总公司 | Rapid and drillable packer made of composite materials |
| CN105735940A (en) * | 2014-12-12 | 2016-07-06 | 中国石油天然气股份有限公司 | Bridge plug |
| CN104879090A (en) * | 2015-06-12 | 2015-09-02 | 西南石油大学 | Fast-drilling composite bridge plug adopting single-slip double-acting structure |
| US20170101835A1 (en) * | 2015-10-09 | 2017-04-13 | General Plastics & Composites, L.P. | Slip assembly for downhole tools |
| CN105545237A (en) * | 2016-02-02 | 2016-05-04 | 四机赛瓦石油钻采设备有限公司 | Anti-rotation anchoring structure beneficial to drilling |
| CN110017117A (en) * | 2019-05-21 | 2019-07-16 | 卢晓东 | A kind of solubility bridge plug |
| CN111101889A (en) * | 2019-12-05 | 2020-05-05 | 四机赛瓦石油钻采设备有限公司 | Light metal fast drilling bridge plug |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112031699B (en) | 2022-07-19 |
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