CN201310319Y - Half-way cementing tool without drilling plug - Google Patents
Half-way cementing tool without drilling plug Download PDFInfo
- Publication number
- CN201310319Y CN201310319Y CNU2008201846544U CN200820184654U CN201310319Y CN 201310319 Y CN201310319 Y CN 201310319Y CN U2008201846544 U CNU2008201846544 U CN U2008201846544U CN 200820184654 U CN200820184654 U CN 200820184654U CN 201310319 Y CN201310319 Y CN 201310319Y
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- China
- Prior art keywords
- central tube
- cementing
- ball seat
- central
- hole
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- Expired - Fee Related
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Abstract
The utility model relates to a half-way cementing tool without a drilling plug for well cementation and completion in the oil industry. The half-way cementing tool comprises an annular packing cementing device (1), sealing leather cups (2), a sleeve (3), a rubber plug seat (4), a ball seat (5), a central pipe (6) and a positioning block (7). The central pipe (6) is internally arranged at the center of the annular packing cementing device; four grooves are formed in the middle of the outer surface of the central pipe (6); a group of sealing leather cups (2) are internally arranged in two adjacent grooves; the ball seat (5) is fixed in the central pipe (6) through a pin; the diameter of a central through hole at the step position of the ball seat (5) is smaller than the minimum inner diameter of a central hole of the central pipe (6); the rubber plug seat (4) is fixed in the central pipe (6) through a pin and located above the ball seat (5); a groove is formed in the position next to the bottom end of the central tube (6); the positioning block (7) is internally arranged in the groove; and a butt-joint device is reserved at the upper end of the central pipe (6). The half-way cementing tool saves the operational procedures and costs of removing casing fittings of small drill pipes or oil pipes.
Description
Technical field
The utility model relates to the instrument of implementing the solid well-completing process of half way in the solid completion of oil, and particularly a kind of brill plug half way cementing tool of exempting from belongs to the downhole tool class.
Background technology
Development along with the well cementation completion technique, for reducing the pollution of well cementing operation to oil reservoir, often adopt the half way well shaft fixing technology at the low pressure oil gas-bearing formation, when adopting hydraulic pressure sizing collar mode, implements the first half term cementing technology, but existing cementing operation, existing hydraulic pressure sizing collar needs to stay when the bradawl tool bores well cementation down perforate plug in the well after finishing, close stopple, annex in the pipe such as blind plate joint, and in completion tubular column, leave step easily, influence the oil recovery workover treatment in later stage, and the oil drilling practical experience shows, boring the well cementation annex such as remove photoresist plug and blind plate and the residual water bod in the small size sleeve pipe is the operation of a time and effort consuming.
Summary of the invention
The purpose of this utility model is to provide a kind of plug half way cementing tool of exempting to bore, by built-in in advance central tube in annular space packing cementing device, in all perforates, hole, the pass equipment centering pipe, thereby realize hydraulic pressure open and close hole, after cementing job is finished, directly propose the well cementation annex in central tube and the central tube, thereby can remove the operation of drill sleeve annex after the solid completion from, and and do not exist step to influence the later stage operation in the sleeve pipe.
For achieving the above object, the technical solution adopted in the utility model is: mainly be made up of annular space packing cementing device, sealing cup, pass borehole jack, plug seat, ball seat, central tube, locating piece, central tube is built in annular space packer cementing device center, leave groove everywhere in the middle of the central tube external surface, the built-in one group of sealing cup of per two adjacent grooves, form cavity between sealing cup and annular space packing cementing device, the pass borehole jack, the central tube outer wall is positioned at empty cavity position the circulation through hole respectively; Ball seat has dowel fixes in central tube, its position can cover the cementing hole, and its outer wall has the outer wall circulation through hole of circulation through hole and central tube bottom suitable, and there is interior step the ball seat lower end, and the central through hole diameter of its step position is less than the centre bore minimum diameter of central tube; The plug seat, and is positioned on the ball seat in central tube with dowel fixes; Central tube has a groove near bottom position, the built-in locating piece of groove, the locating piece centre bit is equipped with a groove, spring is arranged in it, and there is outstanding ear piece at axial two ends, the locating piece left side, and upper end, central tube lower recess relevant position external surface has a projection, this projection length is greater than the outstanding ear block length of locating piece, the lower end external surface of central tube corresponding recesses has a rectangular-shaped cover plate, cover plate with dowel fixes on central tube, cover plate upward to outstanding length also greater than the outstanding ear piece of locating piece; Docking facilities is left in the upper end of central tube.The docking facilities of central tube upper end can be interior step, also can be outer step, can also be the plug-in type spline structure.Every group of sealing cup is relative assistant shape, can adopt global formation sulfuration on the central tube body, can also adopt to compress sliding sleeve and be fixed on the central tube.
The beneficial effects of the utility model are: utilize this instrument to carry out the half way cementing operation, saved the flow chart and the expense of time macaroni or oil pipe drill sleeve annex.
Description of drawings
Fig. 1 the utility model structural representation.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
For achieving the above object, the technical solution adopted in the utility model is: mainly be made up of annular space packing cementing device 1, sealing cup 2, pass borehole jack 3, plug seat 4, ball seat 5, central tube 6, locating piece 7, central tube 6 is built in annular space packer cementing device center, leave groove everywhere in the middle of central tube 6 external surfaces, the built-in one group of sealing cup 2 of per two adjacent grooves, form cavity between sealing cup 2 and annular space packing cementing device 1, the pass borehole jack 3, central tube 6 outer walls are positioned at empty cavity position the circulation through hole respectively; Ball seat 5 has dowel fixes in central tube 6, its position can cover the cementing hole, and its outer wall has the outer wall circulation through hole of circulation through hole and central tube 6 bottoms suitable, and there is interior step ball seat 5 lower ends, and the central through hole diameter of its step position is less than the centre bore minimum diameter of central tube 6; Plug seat 4, and is positioned on the ball seat 5 in central tube 6 with dowel fixes; Central tube 6 has a groove near bottom position, the built-in locating piece 7 of groove, locating piece 7 centre bits are equipped with a groove, spring is arranged in it, there is outstanding ear piece at axial two ends, locating piece 7 left sides, upper end, central tube 6 lower recess relevant positions external surface has a projection, this projection length is greater than the outstanding ear block length of locating piece 7, the lower end external surface of central tube 6 corresponding recesses has a rectangular-shaped cover plate, cover plate with dowel fixes on central tube 7, cover plate upward to outstanding length also greater than the outstanding ear piece of locating piece 7; Docking facilities is left in the upper end of central tube 6; The docking facilities of central tube 6 upper ends can be interior step, also can be outer step, can also be the plug-in type spline structure; Every group of sealing cup 2 is relative assistant shape, can adopt global formation sulfuration on central tube 6 bodies, can also adopt to compress sliding sleeve and be fixed on the central tube 6; Adopt between above-mentioned each parts and be threaded.
After sealing cup 2 can also adopt global formation, be installed on the central tube 6, adopt fixing compression sliding sleeve to compress sealing cup 2 in the middle of every group of sealing cup, fixing compression sliding sleeve is sleeved on the central tube 6, the top position the be divided into section of central tube in every group of sealing cup 2 adopts welding or is threaded between each section.
Its operating principle is as follows: with above-mentioned sealing cup 2, close hole sliding sleeve 3, plug seat 4, ball seat 5, central tube 6, after locating piece 7 assembles, be built in the annular space packing cementing device 1, then annular space packing cementing device 1 is connected on the bunch tube, in pit shaft, after arriving the precalculated position, being lowered to oil pipe or bradawl post inserts in the central tube, pitching, with drilling fluid ball is pumped to ball seat 5, builds the pressure, cut off the pin of fixed ball seat 5, ball seat is descending, abdicate the cementing hole, set up circulation well cleanup, cementing is thrown for the slurry plug, plug builds the pressure after arriving at 4 bruisings of plug seat, cut the fixing pin that closes hole sliding sleeve 3, close the descending cementing hole of closing of sliding sleeve, hole, propose central tube then.
Claims (3)
1, a kind of brill plug half way cementing tool of exempting from, mainly by annular space packing cementing device (1), sealing cup (2), close borehole jack (3), plug seat (4), ball seat (5), central tube (6), locating piece (7) is formed, it is characterized in that: central tube (6) is built in annular space packer cementing device center, leave groove everywhere in the middle of central tube (6) external surface, per built-in one group of sealing cup of two adjacent grooves (2), sealing cup (2) and annular space packing cementing device (1), close between the borehole jack (3) and form cavity, central tube (6) outer wall is positioned at empty cavity position the circulation through hole respectively; Ball seat (5) has dowel fixes in central tube (6), its position can cover the cementing hole, and its outer wall has the outer wall circulation through hole of circulation through hole and central tube (6) bottom suitable, there is interior step ball seat (5) lower end, and the central through hole diameter of its step position is less than the centre bore minimum diameter of central tube (6); Plug seat (4), and is positioned on the ball seat (5) in central tube (6) with dowel fixes; Central tube (6) has a groove near bottom position, the built-in locating piece of groove (7), locating piece (7) centre bit is equipped with a groove, spring is arranged in it, there is outstanding ear piece at axial two ends, locating piece (7) left side, upper end, central tube (6) lower recess relevant position external surface has a projection, this projection length is greater than the outstanding ear block length of locating piece (7), the lower end external surface of central tube (6) corresponding recesses has a rectangular-shaped cover plate, cover plate with dowel fixes on central tube (7), cover plate upward to outstanding length also greater than the outstanding ear piece of locating piece (7); Docking facilities is left in the upper end of central tube (6).
2, a kind of plug half way cementing tool of exempting to bore according to claim 1, it is characterized in that: the docking facilities of central tube (6) upper end can be interior step, also can be outer step, can also be the plug-in type spline structure.
3, according to claim 1 or the described a kind of plug half way cementing tool of exempting to bore of claim 2, it is characterized in that: every group of sealing cup (2) is relative assistant shape, can adopt global formation sulfuration on central tube (6) body, can also adopt to compress sliding sleeve and be fixed on the central tube (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201846544U CN201310319Y (en) | 2008-12-16 | 2008-12-16 | Half-way cementing tool without drilling plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201846544U CN201310319Y (en) | 2008-12-16 | 2008-12-16 | Half-way cementing tool without drilling plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201310319Y true CN201310319Y (en) | 2009-09-16 |
Family
ID=41107573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201846544U Expired - Fee Related CN201310319Y (en) | 2008-12-16 | 2008-12-16 | Half-way cementing tool without drilling plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201310319Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881142A (en) * | 2010-07-02 | 2010-11-10 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Self-sealing setting ball seat |
| CN102337853A (en) * | 2011-08-31 | 2012-02-01 | 程显达 | Circulating drilling-free blind plate cementing device |
| CN101725330B (en) * | 2009-11-03 | 2013-06-19 | 山东普瑞思德石油技术有限公司 | Drilling-and-plugging-free well fixing method and tool |
| CN103835677A (en) * | 2014-03-21 | 2014-06-04 | 青岛吉安泰耐磨密封材料有限公司 | Two-stage sealing bumping-pressure salvageable well completion device for horizontal well |
| CN103835678A (en) * | 2014-03-21 | 2014-06-04 | 青岛吉安泰耐磨密封材料有限公司 | Horizontal well inner-pipe-free drilling-plug-free grading cementing well completion method |
| CN105822252A (en) * | 2015-01-04 | 2016-08-03 | 中国石油天然气股份有限公司 | Well cementation pipe column combination and well cementation method |
| CN107269246A (en) * | 2017-08-09 | 2017-10-20 | 新疆永升能源有限责任公司 | A kind of cementing tool |
| CN114109300A (en) * | 2020-08-31 | 2022-03-01 | 中国石油天然气股份有限公司 | Well cementation method of horizontal well |
-
2008
- 2008-12-16 CN CNU2008201846544U patent/CN201310319Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725330B (en) * | 2009-11-03 | 2013-06-19 | 山东普瑞思德石油技术有限公司 | Drilling-and-plugging-free well fixing method and tool |
| CN101881142A (en) * | 2010-07-02 | 2010-11-10 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Self-sealing setting ball seat |
| CN102337853A (en) * | 2011-08-31 | 2012-02-01 | 程显达 | Circulating drilling-free blind plate cementing device |
| CN102337853B (en) * | 2011-08-31 | 2015-05-20 | 程显达 | Circulating drilling-free blind plate cementing device |
| CN103835677A (en) * | 2014-03-21 | 2014-06-04 | 青岛吉安泰耐磨密封材料有限公司 | Two-stage sealing bumping-pressure salvageable well completion device for horizontal well |
| CN103835678A (en) * | 2014-03-21 | 2014-06-04 | 青岛吉安泰耐磨密封材料有限公司 | Horizontal well inner-pipe-free drilling-plug-free grading cementing well completion method |
| CN105822252A (en) * | 2015-01-04 | 2016-08-03 | 中国石油天然气股份有限公司 | Well cementation pipe column combination and well cementation method |
| CN105822252B (en) * | 2015-01-04 | 2018-09-04 | 中国石油天然气股份有限公司 | Pipe string combination of cementing the well and cementing method |
| CN107269246A (en) * | 2017-08-09 | 2017-10-20 | 新疆永升能源有限责任公司 | A kind of cementing tool |
| CN114109300A (en) * | 2020-08-31 | 2022-03-01 | 中国石油天然气股份有限公司 | Well cementation method of horizontal well |
| CN114109300B (en) * | 2020-08-31 | 2023-12-22 | 中国石油天然气股份有限公司 | Cementing method of horizontal well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20161216 |