CN105604517A - Casing pipe patching relay type cement paste replacement device - Google Patents
Casing pipe patching relay type cement paste replacement device Download PDFInfo
- Publication number
- CN105604517A CN105604517A CN201610098163.7A CN201610098163A CN105604517A CN 105604517 A CN105604517 A CN 105604517A CN 201610098163 A CN201610098163 A CN 201610098163A CN 105604517 A CN105604517 A CN 105604517A
- Authority
- CN
- China
- Prior art keywords
- lock ring
- patching
- seat
- valve
- pipe
- 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.)
- Pending
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Classifications
-
- 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
- E21B29/10—Reconditioning of well casings, e.g. straightening
Abstract
The invention provides a casing pipe patching relay type cement paste replacement device. When cement paste in an oil pipe is replaced, a rubber plug and the inner wall of the oil pipe are sealed in a matched mode, the rubber plug is pushed by pressure to move downwards, cement paste in the oil pipe and under the rubber plug is also replaced to an annular space between a patching pipe and a casing pipe, the rubber plug and a valve ball move downwards to a valve seat, a channel of the valve seat is blocked, a cutting pin is pressed and broken by push force generated by pressure, an expansion packing cup replaces a rubber plug sealing channel so that cement paste in the patching pipe and under the expansion packing cup can be replaced into the annular space between the patching pipe and the casing pipe continuously, the damaged position, corresponding to the patching pipe, of the casing pipe is blocked, and after replacement is completed, a locking device is matched with a locking connector to lock the expansion packing cup to the lower portion of the patching pipe, so that a patched oil-water well can be normally used. By means of the casing pipe patching relay type cement paste replacement device, cement paste in the oil pipe and the patching pipe can be totally replaced into the annular space between the patching pipe and the casing pipe, patching quality of the casing pipe can be improved, engineering accidents cannot occur, and remarkable economic benefits are achieved.
Description
Technical field
The present invention is the device that oil field casing repairing is used, and is a kind of casing patching relay-type cement mortar displacing device.
Background technology
After casing damage in oil-water well, adopting sleeve pipe to block method subsidizes casing collapse place, prevent casing leakage, casing patching be by under patching tube in casing collapse place, to grout between sleeve pipe and patching tube, and after cement mortar solidifies, make sleeve pipe and patching tube be consolidated into one, thereby by intact the repairing of casing collapse place, oil-water well can normally be produced. Patching tube is brought casing patching place into by the oil pipe on being connected to, pipe aperture is generally 62mm, and the internal diameter of patching tube is generally greater than 92mm, the length of patching tube has tens of rice to hundreds of rice, when construction, cement mortar is squeezed into from oil pipe, returns to the annular space between patching tube and sleeve pipe through patching tube bottom. Qualified in order to ensure to construct, and oil pipe do not lived admittedly by cement mortar, and working oil pipe can be proposed safely, the essential consumption of controlling cement mortar, and it all to be replaced to flowlines and patching tubes. The plug that replaces at present cement mortar is only suitable in a kind of caliber, because oil pipe, patching tube internal diameter difference are large, patching tube is longer again, existing plug can only replace the cement mortar in oil pipe, plug can not form sealing with patching tube from oil pipe enters patching tube, cement mortar in patching tube can not replace the annular space of patching tube and sleeve pipe, easily cause and construct unsuccessfully, reach the object that can not subsidize sleeve pipe, the engineering accident that also easily causes fixed oil pipe to use oil pipe can not carry out, causes heavy economic losses. In order to address this problem, field technician has adopted large diameter plug, and this plug easily weares and teares in oil pipe, makes it arrive diameter after patching tube and diminishes, and can not replace the cement mortar in patching tube.
Summary of the invention
The object of this invention is to provide a kind of casing patching relay-type cement mortar displacing device, overcome the problem of above-mentioned existence, make it can replace two kinds of cement mortars in caliber, cement mortar in oil pipe and patching tube all can be replaced to the annular space between patching tube and sleeve pipe, improve casing patching success rate.
The object of the present invention is achieved like this: comprise sleeve pipe, oil pipe, variable buckle joint, patching tube, oil pipe, variable buckle joint, patching tube is lowered in sleeve pipe after connecting successively, the internal diameter of oil pipe is less than the internal diameter of patching tube, plug is mated sealing in oil pipe, valve ball is installed in the bottom of plug, valve seat is arranged in expansion leather cup, expansion leather cup is set with leather cup seat outward, the bottom of leather cup seat connects locked joints, expansion leather cup, valve seat, leather cup seat, locked joints is assembled into the top of putting into patching tube after one, be fixed in patching tube by cutting off pin, expansion leather cup and patching tube fitted seal, expansion leather cup, valve seat, leather cup seat, locked joints inside is through hole, can overcurrent cement mortar, the diameter of valve ball is greater than the aperture of valve seat, valve ball can stop up the duct of valve seat, make its mineralization pressure poor, locking device is installed in the bottom of patching tube, described locking device coordinates locked joints expansion leather cup can be locked to the bottom of patching tube.
Described locking device comprises interstage sleeve, opening lock ring, lock ring seat, in lock ring seat, there is lock ring groove, in described lock ring groove, place opening lock ring, the external diameter of opening lock ring is greater than the internal diameter of described lock ring groove bottom shoulder place lock ring seat, make opening lock ring can not depart from described lock ring groove downwards, interstage sleeve is connected with the top of lock ring seat, the external diameter of opening lock ring is greater than the internal diameter of interstage sleeve, opening lock ring can not upwards depart from described lock ring groove, on locked joints, there is locked groove, the lower diameter of locked joints is greater than the internal diameter of opening lock ring, when opening lock ring is passed through in the bottom of locked joints, opening lock ring is expanded in described lock ring groove, when the corresponding opening lock ring of described locked groove, locked joints and described locking device can be locked into one.
Under lock ring seat, connect blowout prevention valve, blowout prevention valve stops cement mortar to flow backwards from bottom to top, can be by mobile from the top down cement mortar.
Blowout prevention valve comprises blowout-preventing ball seat, blowout prevention valve ball, valve bonnet, blowout prevention valve ball is placed in the valve pocket of valve bonnet, blowout-preventing ball seat is placed on the interior shoulder of valve bonnet, the top of valve bonnet is connected with the bottom of lock ring seat, the upper surface of blowout-preventing ball seat is pushed down in the lower surface of lock ring seat, make between the lower surface of blowout-preventing ball seat and the interior shoulder of valve bonnet in sealing state, the diameter of blowout prevention valve ball is greater than the bore of blowout-preventing ball seat lower end, linked hole is arranged at the bottom of valve bonnet, and described linked hole makes the outside UNICOM of valve pocket and the valve bonnet of valve bonnet inside.
The buoyancy of blowout prevention valve ball in cement mortar is greater than himself weight, in cement mortar blowout prevention valve ball under buoyancy on begin position coordinate with the lower port of blowout-preventing ball seat stop cement mortar flow backwards from bottom to top.
Blowout prevention valve ball is hollow steel ball.
The invention has the beneficial effects as follows: in the time of the cement mortar replacing in oil pipe, plug and tube inner wall fitted seal, plug is promoted descending by pressure, also make in oil pipe, mud under plug is replaced in the annular space between patching tube and sleeve pipe, plug, valve ball goes downwards to valve seat place, the channel jam of valve seat, the thrust that pressure produces will be cut off pin and be broken, expansion leather cup is taken over plug seal channel, make the cement mortar under patching tube intramedullary expansion leather cup continue to be replaced in the annular space between patching tube and sleeve pipe, make the casing damage life at corresponding patching tube place by shutoff, oil-water well can resume production, after replacement completes, locking device coordinates locked joints expansion leather cup to be locked to the bottom of patching tube, oil-water well after subsidy can normally be used. therefore, the present invention can reach purpose of design, and the cement mortar in oil pipe and patching tube is all replaced to the annular space between patching tube and sleeve pipe, can improve casing patching quality, and engineering accident can not occur, and has significant economic benefit.
Brief description of the drawings
Fig. 1 is the structure chart of the embodiment of the present invention.
Fig. 2 is the structure chart of part 15 in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described.
As seen from the figure, oil pipe 2, variable buckle joint 5, patching tube 12 is lowered in sleeve pipe 1 after connecting successively, the internal diameter of oil pipe 2 is less than the internal diameter of patching tube 12, in the sleeve pipe that is 124mm at internal diameter, pipe aperture is generally 62mm, patching tube internal diameter is 102mm, plug 3 is made for having flexible rubber, plug 3 is tightly affixed with its inwall in oil pipe 2, with oil pipe 2 fitted seal, valve ball 4 is installed in the bottom of plug 3, valve seat 7 is arranged in expansion leather cup 6, the outer suit leather cup of expansion leather cup 6 seat 8, the bottom of leather cup seat 8 connects locked joints 11, expansion leather cup 6, valve seat 7, leather cup seat 8, locked joints 11 is assembled into the top of putting into patching tube 12 after one, be fixed in patching tube 12 by cutting off pin 9, expansion leather cup 6 is made by having flexible rubber, expansion leather cup 6 is close on the inwall of patching tube 12, expansion leather cup 6 and patching tube 12 fitted seal, expansion leather cup 6, valve seat 7, leather cup seat 8, locked joints 11 inside are through hole, can overcurrent cement mortar, the diameter of valve ball 4 is greater than the aperture of valve seat 7, valve ball 4 can stop up the duct of valve seat 7, make its mineralization pressure poor, locking device is installed in the bottom of patching tube 12, described locking device coordinates locked joints 11 expansion leather cup 6 can be locked to the bottom of patching tube 12.
Described locking device comprises interstage sleeve 13, opening lock ring 15, lock ring seat 16, 16 li of lock ring seats have lock ring groove 14, described 14 li of placement opening lock rings 15 of lock ring groove, the external diameter of opening lock ring 15 is greater than the internal diameter of described lock ring groove 14 shoulder place, bottom surface lock ring seats 16, make opening lock ring 15 can not depart from described lock ring groove 14 downwards, interstage sleeve 13 is connected with the top of lock ring seat 16, the external diameter of opening lock ring 15 is greater than the internal diameter of interstage sleeve 13, opening lock ring 15 can not upwards depart from described lock ring groove 14, on locked joints 11, there is locked groove 10, the lower diameter of locked joints 11 is greater than the internal diameter of opening lock ring 15, when opening lock ring 15 is passed through in the bottom of locked joints 11, opening lock ring 15 is in 14 li of expansions of described lock ring groove, when the described corresponding opening lock ring 15 of locked groove 10, opening lock ring 15 retractions restore to the original state, opening lock ring 15 is sleeved on 10 li of described locked grooves, locked joints 11 is locked into one with described locking device.
Under lock ring seat, connect blowout prevention valve, the effect of blowout prevention valve is to stop cement mortar to flow backwards from bottom to top, can be by mobile from the top down cement mortar.
Blowout prevention valve comprises blowout-preventing ball seat 17, blowout prevention valve ball 18, valve bonnet 19, blowout prevention valve ball 18 is placed in the valve pocket of valve bonnet 19, blowout-preventing ball seat 17 is placed on the interior shoulder of valve bonnet 19, the top of valve bonnet 19 is connected with the bottom of lock ring seat 16, the axial force that connecting thread produces makes the lower surface of lock ring seat 16 push down the upper surface of blowout-preventing ball seat 17, make between the lower surface of blowout-preventing ball seat 17 and the interior shoulder of valve bonnet 19 in sealing state, the diameter of blowout prevention valve ball 18 is greater than the bore of blowout-preventing ball seat 17 lower ends, linked hole is arranged at the bottom of valve bonnet 19, described linked hole makes the outside UNICOM of valve pocket and the valve bonnet 19 of valve bonnet 19 inside, can be by the cement mortar replacing.
The buoyancy of blowout prevention valve ball 18 in cement mortar is greater than himself weight, in cement mortar blowout prevention valve ball 18 under buoyancy on begin position coordinate with the lower port of blowout-preventing ball seat 17 stop cement mortar flow backwards from bottom to top. Blowout prevention valve ball 18 is hollow steel ball.
In the time of the cement mortar replacing in oil pipe 2, plug 3 and oil pipe 2 inwall fitted seal, plug 3 is promoted descending by pressure, also make in oil pipe 2, mud under plug 3 is replaced in the annular space between patching tube 12 and sleeve pipe 1, plug 3, valve ball 4 goes downwards to valve seat 7 places, the channel jam of valve seat 7, the thrust that pressure produces will be cut off pin 8 and be broken, expansion leather cup 6 is taken over plug 3 seal channels, make in patching tube 12, cement mortar under expansion leather cup 6 continues to be replaced in the annular space between patching tube 12 and sleeve pipe 1, the present invention can all replace the cement mortar being equipped with in the annular space between patching tube 12 and sleeve pipe 1, cement mortar consumption is accurate, can residual water mud in oil pipe 2 and patching tube 12, construction safety, casing patching quality is high. after replacement completes, locking device coordinates locked joints 11 expansion leather cup 6 to be locked to the bottom of patching tube 12, and expansion leather cup 6 can not float, and the oil-water well after subsidy can normally be used.
Claims (6)
1. a casing patching relay-type cement mortar displacing device, comprise sleeve pipe (1), oil pipe (2), variable buckle joint (5), patching tube (12), oil pipe (2), variable buckle joint (5), patching tube (12) is lowered in sleeve pipe (1) after connecting successively, the internal diameter of oil pipe (2) is less than the internal diameter of patching tube (12), it is characterized in that: plug (3) is mated sealing in oil pipe (2), valve ball (4) is installed in the bottom of plug (3), valve seat (7) is arranged in expansion leather cup (6), expansion leather cup (6) outer suit leather cup seat (8), the bottom of leather cup seat (8) connects locked joints (11), expansion leather cup (6), valve seat (7), leather cup seat (8), locked joints (11) is assembled into the top of putting into patching tube (12) after one, be fixed in patching tube (12) by cutting off pin (9), expansion leather cup (6) and patching tube (12) fitted seal, expansion leather cup (6), valve seat (7), leather cup seat (8), locked joints (11) inside is through hole, can overcurrent cement mortar, the diameter of valve ball (4) is greater than the aperture of valve seat (7), valve ball (4) can stop up the duct of valve seat (7), make its mineralization pressure poor, locking device is installed in the bottom of patching tube (12), described locking device coordinates locked joints (11) expansion leather cup (6) can be locked to the bottom of patching tube (12).
2. casing patching relay-type cement mortar displacing device according to claim 1, it is characterized in that: described locking device comprises interstage sleeve (13), opening lock ring (15), lock ring seat (16), lock ring seat (16) is inner lock ring groove (14), the inner opening lock ring (15) of placing of described lock ring groove (14), the external diameter of opening lock ring (15) is greater than the internal diameter of described lock ring groove (14) bottom surface shoulder place lock ring seat (16), make opening lock ring (15) can not depart from described lock ring groove (14) downwards, interstage sleeve (13) is connected with the top of lock ring seat (16), the external diameter of opening lock ring (15) is greater than the internal diameter of interstage sleeve (13), opening lock ring (15) can not upwards depart from described lock ring groove (14), on locked joints (11), there is locked groove (10), the lower diameter of locked joints (11) is greater than the internal diameter of opening lock ring (15), when opening lock ring (15) is passed through in the bottom of locked joints (11), opening lock ring (15) is in the described inner expansion of lock ring groove (14), when the described corresponding opening lock ring of locked groove (10) (15), locked joints (11) is locked into one with described locking device.
3. casing patching relay-type cement mortar displacing device according to claim 1 and 2, is characterized in that: lock ring seat connects blowout prevention valve under (16), and blowout prevention valve stops cement mortar to flow backwards from bottom to top, can be by mobile from the top down cement mortar.
4. casing patching relay-type cement mortar displacing device according to claim 3, it is characterized in that: blowout prevention valve comprises blowout-preventing ball seat (17), blowout prevention valve ball (18), valve bonnet (19), blowout prevention valve ball (18) is placed in the valve pocket of valve bonnet (19), blowout-preventing ball seat (17) is placed on the interior shoulder of valve bonnet (19), the top of valve bonnet (19) is connected with the bottom of lock ring seat (16), the upper surface of blowout-preventing ball seat (17) is pushed down in the lower surface of lock ring seat (16), make between the lower surface of blowout-preventing ball seat (17) and the interior shoulder of valve bonnet (19) in sealing state, the diameter of blowout prevention valve ball (18) is greater than the bore of blowout-preventing ball seat (17) lower end, linked hole is arranged at the bottom of valve bonnet (19), described linked hole makes the inner valve pocket of valve bonnet (19) and the outside UNICOM of valve bonnet (19).
5. casing patching relay-type cement mortar displacing device according to claim 4, it is characterized in that: the buoyancy of blowout prevention valve ball (18) in cement mortar is greater than himself weight, in cement mortar blowout prevention valve ball (18) under buoyancy on begin position coordinate with the lower port of blowout-preventing ball seat (17) stop cement mortar flow backwards from bottom to top.
6. casing patching relay-type cement mortar displacing device according to claim 5, is characterized in that: blowout prevention valve ball (18) is hollow steel ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610098163.7A CN105604517A (en) | 2016-02-23 | 2016-02-23 | Casing pipe patching relay type cement paste replacement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610098163.7A CN105604517A (en) | 2016-02-23 | 2016-02-23 | Casing pipe patching relay type cement paste replacement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105604517A true CN105604517A (en) | 2016-05-25 |
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ID=55984803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610098163.7A Pending CN105604517A (en) | 2016-02-23 | 2016-02-23 | Casing pipe patching relay type cement paste replacement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105604517A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639946A (en) * | 2016-12-27 | 2017-05-10 | 神华集团有限责任公司 | Mine sleeve repairing method |
| CN106869846A (en) * | 2017-02-24 | 2017-06-20 | 中国石油化工股份有限公司 | A kind of down-hole casing subsidizes method |
| CN109386247A (en) * | 2018-11-27 | 2019-02-26 | 中国石油天然气股份有限公司 | A kind of expandable casing patching time is slotting every tool of adopting and application method |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3796260A (en) * | 1972-01-10 | 1974-03-12 | Halliburton Co | Multiple plug release system |
| CN2625569Y (en) * | 2003-06-06 | 2004-07-14 | 辽河石油勘探局钻井一公司 | Impacting shearing device for tail pipe well completion |
| CN201705252U (en) * | 2009-06-05 | 2011-01-12 | 中国石化集团胜利石油管理局钻井工艺研究院 | Hydraulic expansion type rotating liner hanger |
| CN201991473U (en) * | 2011-03-23 | 2011-09-28 | 中国石油化工股份有限公司 | Casing suspension device for well repair |
| 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 |
| CN103015934A (en) * | 2012-12-18 | 2013-04-03 | 中国石油天然气股份有限公司 | Connecting rod structure with demountable expansion cone |
| US20140110136A1 (en) * | 2012-10-18 | 2014-04-24 | Drilling Technology Research Institute of Sinopec Oilfield Service Shengli Corporation | Downhole casing expansion tool and method of expanding casings using the same |
| CN204729052U (en) * | 2015-06-10 | 2015-10-28 | 新疆再兴科苑石油科技有限公司 | Self-locking well cementation seal rubber plug and bruising device |
| CN105064949A (en) * | 2015-08-05 | 2015-11-18 | 中国石油集团川庆钻探工程有限公司 | Cement slurry backflow preventing device for drilling liner cementing |
| CN204827315U (en) * | 2015-08-08 | 2015-12-02 | 中国石油化工股份有限公司 | Stopper well cementation device is exempted from to bore by little casing string |
| CN204827363U (en) * | 2015-07-08 | 2015-12-02 | 延长油田股份有限公司 | It closes closed float collar to bump to press |
| CN205370487U (en) * | 2016-02-23 | 2016-07-06 | 中国石油化工股份有限公司 | Casing patching relay formula grout replaces device |
-
2016
- 2016-02-23 CN CN201610098163.7A patent/CN105604517A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3796260A (en) * | 1972-01-10 | 1974-03-12 | Halliburton Co | Multiple plug release system |
| CN2625569Y (en) * | 2003-06-06 | 2004-07-14 | 辽河石油勘探局钻井一公司 | Impacting shearing device for tail pipe well completion |
| CN201705252U (en) * | 2009-06-05 | 2011-01-12 | 中国石化集团胜利石油管理局钻井工艺研究院 | Hydraulic expansion type rotating liner hanger |
| 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 |
| CN201991473U (en) * | 2011-03-23 | 2011-09-28 | 中国石油化工股份有限公司 | Casing suspension device for well repair |
| US20140110136A1 (en) * | 2012-10-18 | 2014-04-24 | Drilling Technology Research Institute of Sinopec Oilfield Service Shengli Corporation | Downhole casing expansion tool and method of expanding casings using the same |
| CN103015934A (en) * | 2012-12-18 | 2013-04-03 | 中国石油天然气股份有限公司 | Connecting rod structure with demountable expansion cone |
| CN204729052U (en) * | 2015-06-10 | 2015-10-28 | 新疆再兴科苑石油科技有限公司 | Self-locking well cementation seal rubber plug and bruising device |
| CN204827363U (en) * | 2015-07-08 | 2015-12-02 | 延长油田股份有限公司 | It closes closed float collar to bump to press |
| CN105064949A (en) * | 2015-08-05 | 2015-11-18 | 中国石油集团川庆钻探工程有限公司 | Cement slurry backflow preventing device for drilling liner cementing |
| CN204827315U (en) * | 2015-08-08 | 2015-12-02 | 中国石油化工股份有限公司 | Stopper well cementation device is exempted from to bore by little casing string |
| CN205370487U (en) * | 2016-02-23 | 2016-07-06 | 中国石油化工股份有限公司 | Casing patching relay formula grout replaces device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639946A (en) * | 2016-12-27 | 2017-05-10 | 神华集团有限责任公司 | Mine sleeve repairing method |
| CN106639946B (en) * | 2016-12-27 | 2019-05-03 | 神华集团有限责任公司 | Mining casing salvaging method |
| CN106869846A (en) * | 2017-02-24 | 2017-06-20 | 中国石油化工股份有限公司 | A kind of down-hole casing subsidizes method |
| CN106869846B (en) * | 2017-02-24 | 2023-01-03 | 中国石油化工股份有限公司 | Underground casing patching method |
| CN109386247A (en) * | 2018-11-27 | 2019-02-26 | 中国石油天然气股份有限公司 | A kind of expandable casing patching time is slotting every tool of adopting and application method |
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Application publication date: 20160525 |