CN103573212B - Composite bushing well cementation split plug device - Google Patents
Composite bushing well cementation split plug device Download PDFInfo
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- CN103573212B CN103573212B CN201310513763.1A CN201310513763A CN103573212B CN 103573212 B CN103573212 B CN 103573212B CN 201310513763 A CN201310513763 A CN 201310513763A CN 103573212 B CN103573212 B CN 103573212B
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Abstract
<b> the present invention relates to cementing unit technical field, it is a kind of composite bushing well cementation split plug device, it comprises the rubber plug body that plug cylinder, reducer union and external diameter are less than plug cylinder external diameter, the bottom of plug cylinder and the top of rubber plug body are fixedly installed togather by shear pin, the top cement plug wing being no less than one is fixed with in the upper outside of plug cylinder, be fixed with the bottom plug wing being no less than at the lower outside of rubber plug body, have in annular frustum wide at the top and narrow at the bottom at the inside middle portion of reducer union.Reasonable and compact in structure of the present invention, easy to use, it is in the process for slurry, the setting of plug cylinder and rubber plug body Split type structure, avoid plug cylinder to enter plug cylinder that small casing causes and rubber plug body and to come off the generation of situation, improve the efficiency for slurry operation, simultaneously, avoid the generation of phenomenon that plug cylinder damages, the friction avoided between plug cylinder and the little small casing of internal diameter produces greyly fills in the phenomenon remained in sleeve pipe.</b>
Description
Technical field
the present invention relates to cementing unit technical field, is a kind of composite bushing well cementation split plug device.
Background technology
during reinforcing oil well, according to well hole diameter situation, composite bushing is entered under needs, the composite bushing that the large sleeve pipe of such as external diameter to be the small casing of 177.8mm and external diameter be 139.7mm is formed, internal diameter both it is also different, because the internal diameter of two kinds of sleeve pipes is different, so adopting composite bushing to carry out needing the different plug of use two kinds of external diameters to carry out for slurry in for the process of starching, the Compounded rubber plug of current employing integral type carries out for slurry, the plug that on Compounded rubber plug, diameter is less enters sleeve pipe from the large sleeve pipe that internal diameter is large, after the plug that external diameter is little enters the little sleeve pipe of internal diameter, and when the junction of the plug that the plug that diameter is larger is less from diameter moves to composite bushing junction (junction of the different sleeve pipe of internal diameter), the plug outside that diameter is larger is squeezed and damages or come off, reduce for slurry efficiency.In addition, can enter in the small casing of little internal diameter to meet the large plug of external diameter, the plug skirt section (the plug wing) that external diameter is larger can make thin and soft, can produce ash plug, can cause in pipe the phenomenon staying ash plug when the plug that external diameter is larger enters the small casing of little internal diameter due to friction damage.
Summary of the invention
the invention provides a kind of composite bushing well cementation split plug device, overcome the deficiency of above-mentioned prior art, in its low and pipe for slurry efficiency that effectively can solve that existing Compounded rubber plug exists in actual use, stay the problem of ash plug.
technical scheme of the present invention is realized by following measures: a kind of composite bushing well cementation split plug device, comprise plug cylinder, reducer union and external diameter are less than the rubber plug body of plug cylinder external diameter, the bottom of plug cylinder and the top of rubber plug body are fixedly installed togather by shear pin, the top cement plug wing being no less than one is fixed with in the upper outside of plug cylinder, the bottom plug wing being no less than one is fixed with at the lower outside of rubber plug body, have in annular frustum wide at the top and narrow at the bottom at the inside middle portion of reducer union, the annular concave platform corresponding with annular frustum is had outside plug cylinder below the top cement plug wing, annular concave platform and annular frustum are fitted together, the lower inside of the bottom plug wing and reducer union is fitted together, all screw thread is had in the upper inner of reducer union and lower outside.
here is the further optimization and/or improvements to foregoing invention technical scheme:
above-mentioned plug cylinder can comprise packing element body and upper fixed cover, the upper annular groove being no less than two is had from top to bottom in the outside of packing element body, the upper protruding block corresponding with upper annular groove is fixed with in the inner side of upper fixed cover, upper protruding block is fixedly mounted in annular groove, is fixed with the top cement plug wing being no less than two in the outside of upper fixed cover from top to bottom.
above-mentioned upper annular groove can comprise fixing annular groove and be no less than the lower fixing annular groove of, the upper height of height higher than lower fixing annular groove fixing annular groove, upper protruding block comprises fixing projection and is no less than the lower fixing projection of, upper fixing projection is fixedly mounted in fixing annular groove, lower fixing projection is fixedly mounted in lower fixing annular groove, the top cement plug wing comprises the second plug wing that the first plug wing and external diameter are less than the first plug wing external diameter, and the first plug wing is positioned at the top of the second plug wing.
above-mentioned rubber plug body can comprise plug core and lower fixed cover, sealing plate is fixed with in the lower end of lower fixed cover, the bottom seat of plug core is on sealing plate, the lower annular groove being no less than two is had from top to bottom in the outside of plug core, the lower protruding block corresponding with lower annular groove is fixed with in the inner side being positioned at the lower fixed cover above sealing plate, lower protruding block is fixedly mounted in lower annular groove, is fixed with the bottom plug wing being no less than two in the outside of lower fixed cover from top to bottom.
above-mentioned lower annular groove can comprise upper limit annular groove and be no less than the lower limit annular groove of, upper limit annular groove is positioned at the top of lower limit annular groove, the height of upper limit annular groove is higher than the height of lower limit annular groove, lower protruding block comprises upper limit projection and is no less than the lower limit projection of, upper limit projection is fixed with inside the upper end of lower fixed cover, upper end and the upper limit projection of lower fixed cover are all fixedly mounted in upper limit position groove, in taper wide at the top and narrow at the bottom inside the lower fixed cover of upper limit projection upper end, the bottom of packing element body and the upper end medial extremity of lower fixed cover are fitted together, lower limit projection is fixedly mounted in lower limit annular groove, the bottom plug wing comprises the 4th plug wing that the 3rd plug wing and external diameter are less than the 3rd plug wing external diameter, the 3rd plug wing is positioned at the top of the 4th plug wing.
the bottom of above-mentioned packing element body along the circumferential direction can be distributed with the interior radial installing hole being no less than two, the outer radial installing hole corresponding with interior radial installing hole is had in the upper outside of plug core, the bottom of packing element body and the upper outside of plug core are fixedly installed togather by interior radial installing hole, outer radial installing hole and shear pin, the plug core below outer installing hole be installed with the sealing ring together with being no less than between packing element body.
the longitudinal cross-section of the lower end of the lower fixed cover below the above-mentioned bottom plug wing can be big up and small down taper.
reasonable and compact in structure of the present invention, easy to use, it is in the process for slurry, the setting of plug cylinder and rubber plug body Split type structure, avoid plug cylinder to enter plug cylinder that small casing causes and rubber plug body and to come off the generation of situation, improve the efficiency for slurry operation, simultaneously, avoid the generation of phenomenon that plug cylinder damages, the friction avoided between plug cylinder and the little small casing of internal diameter produces greyly fills in the phenomenon remained in sleeve pipe.
Accompanying drawing explanation
accompanying drawing 1 is that the master of preferred embodiment looks half section structural representation.
accompanying drawing 2 is that the master of plug cylinder and rubber plug body in accompanying drawing 1 looks half section structural representation.
accompanying drawing 3 is that the master of reducer union in accompanying drawing 1 looks half section structural representation.
coding in accompanying drawing is respectively: 1 is reducer union, and 2 is shear pin, and 3 is annular frustum, 4 is annular concave platform, and 5 is packing element body, and 6 is upper fixed cover, 7 is upper fixing projection, and 8 is lower fixing projection, and 9 is the first plug wing, 10 is the second plug wing, and 11 is plug core, and 12 is lower fixed cover, 13 is sealing plate, and 14 is upper limit projection, and 15 is lower limit projection, 16 is the 3rd plug wing, and 17 is the 4th plug wing, and 18 is sealing ring.
Detailed description of the invention
the present invention by the restriction of following embodiment, can not determine concrete embodiment according to technical scheme of the present invention and actual conditions.
in the present invention, for convenience of description, the description of the relative position relation of each parts is all be described according to the Butut mode of Figure of description 1, as: the position relationship of forward and backward, upper and lower, left and right etc. determines according to the Butut direction of Figure of description 1.
below in conjunction with embodiment and accompanying drawing, the invention will be further described:
as shown in accompanying drawing 1 to 3, this composite bushing well cementation split plug device comprises plug cylinder, reducer union 1 and external diameter are less than the rubber plug body of plug cylinder external diameter, the bottom of plug cylinder and the top of rubber plug body are fixedly installed togather by shear pin 2, the top cement plug wing being no less than one is fixed with in the upper outside of plug cylinder, the bottom plug wing being no less than one is fixed with at the lower outside of rubber plug body, have in annular frustum 3 wide at the top and narrow at the bottom at the inside middle portion of reducer union 1, the annular concave platform 4 corresponding with annular frustum 3 is had outside plug cylinder below the top cement plug wing, annular concave platform 4 and annular frustum 3 are fitted together, the lower inside of the bottom plug wing and reducer union 1 is fitted together, all screw thread is had in the upper inner of reducer union 1 and lower outside.The setting of plug cylinder and rubber plug body Split type structure, avoid plug cylinder to enter plug cylinder that small casing causes and rubber plug body and to come off the generation of situation, rubber plug body can be made to enter in small casing carry out follow-up for slurry operation, improve the efficiency for slurry operation, simultaneously, avoid the generation of phenomenon that plug cylinder damages, the friction avoided between plug cylinder and the little small casing of internal diameter produces greyly fills in the phenomenon remained in sleeve pipe.
according to actual needs, above-mentioned composite bushing well cementation split plug device can be made further optimization and/or improvements:
as shown in accompanying drawing 1 to 3, plug cylinder comprises packing element body 5 and upper fixed cover 6, the upper annular groove being no less than two is had from top to bottom in the outside of packing element body 5, the upper protruding block corresponding with upper annular groove is fixed with in the inner side of upper fixed cover 6, upper protruding block is fixedly mounted in annular groove, is fixed with the top cement plug wing being no less than two in the outside of upper fixed cover 6 from top to bottom.Packing element body 5 and upper fixed cover 6 the secure fit effect that can improve on the one hand is therebetween set, on the other hand, be convenient to disassemble in large sleeve pipe, the setting of the top cement plug wing can improve the sealing performance between plug cylinder and large sleeve pipe.
as shown in accompanying drawing 1 to 3, upper annular groove comprises fixing annular groove and is no less than the lower fixing annular groove of, the upper height of height higher than lower fixing annular groove fixing annular groove, upper protruding block comprises fixing projection 7 and is no less than the lower fixing projection 8 of, upper fixing projection 7 is fixedly mounted in fixing annular groove, lower fixing projection 8 is fixedly mounted in lower fixing annular groove, the top cement plug wing comprises the top that the second plug wing 10, the first plug wing 9 that the first plug wing 9 and external diameter be less than the first plug wing 9 external diameter is positioned at the second plug wing 10.The setting of the first plug wing 9 ensure that the sealing performance between plug cylinder and large sleeve pipe; The setting that external diameter is less than the second plug wing 10 of the first plug wing 9 external diameter is convenient to upper fixed cover 6 to take apart in large sleeve pipe.
as shown in accompanying drawing 1 to 3, rubber plug body comprises plug core 11 and lower fixed cover 12, sealing plate 13 is fixed with in the lower end of lower fixed cover 12, the bottom seat of plug core 11 is on sealing plate 13, the lower annular groove being no less than two is had from top to bottom in the outside of plug core 11, be fixed with the lower protruding block corresponding with lower annular groove in the inner side being positioned at the lower fixed cover 12 above sealing plate 13, lower protruding block is fixedly mounted in lower annular groove, is fixed with the bottom plug wing being no less than two in the outside of lower fixed cover 12 from top to bottom.The bottom plug wing can improve the sealing performance between rubber plug body and small casing.
as shown in accompanying drawing 1 to 3, lower annular groove comprises upper limit annular groove and is no less than the lower limit annular groove of, upper limit annular groove is positioned at the top of lower limit annular groove, the height of upper limit annular groove is higher than the height of lower limit annular groove, lower protruding block comprises upper limit projection 14 and is no less than the lower limit projection 15 of, upper limit projection 14 is fixed with inside the upper end of lower fixed cover 12, upper end and the upper limit projection 14 of lower fixed cover 12 are all fixedly mounted in upper limit position groove, in taper wide at the top and narrow at the bottom inside the lower fixed cover 12 of upper limit projection 14 upper end, the bottom of packing element body 5 and the upper end medial extremity of lower fixed cover 12 are fitted together, lower limit projection 15 is fixedly mounted in lower limit annular groove, the bottom plug wing comprises the 4th plug wing 17 that the 3rd plug wing 16 and external diameter are less than the 3rd plug wing 16 external diameter, the 3rd plug wing 16 is positioned at the top of the 4th plug wing 17.The setting of the 3rd plug wing 16 ensure that the sealing performance between rubber plug body and small casing; The setting of the 4th plug wing 17 is convenient to lower fixed cover 12 to take apart in small casing.
as shown in accompanying drawing 1 to 3, along the circumferential direction be distributed with in the bottom of packing element body 5 and be no less than radial installing hole in two, the outer radial installing hole corresponding with interior radial installing hole is had in the upper outside of plug core 11, the bottom of packing element body 5 and the upper outside of plug core 11 are fixedly installed togather by interior radial installing hole, outer radial installing hole and shear pin 2, at the sealing ring 18 of the plug core 11 below outer installing hole together with being installed with between packing element body 5 and being no less than.The sealing performance arranged further between raising packing element body 5 and plug core 11 of sealing ring 18.
as required, the taper that the longitudinal cross-section of the lower end of the lower fixed cover 12 below the bottom plug wing is big up and small down.The setting of taper is convenient to rubber plug body and is entered in small casing, further increases operating efficiency.
above technical characteristic constitutes most preferred embodiment of the present invention, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
the use procedure of preferred embodiment: in well during setting of casing, the little small casing of internal diameter is entered under first in well, the lower outside of last root small casing and reducer union 1 is fixedly installed togather by screw thread, after entering well, the large sleeve pipe that the upper inner of reducer union 1 is large with internal diameter be fixedly installed togather and together with G.I.H, then plug cylinder and rubber plug body are put into the cementing head of well head, after noted cementing fluid in well, open cement first speed pin, release plug cylinder and rubber plug body replace cementing fluid until annular frustum 3 place that annular concave platform 4 on plug cylinder arrives in reducer union 1 carries out bruising, plug cylinder and rubber plug body are in dispose procedure, the first plug wing 9, the second plug wing 10, there is deformation in the 3rd plug wing 16 and the 4th plug wing 17, carry out in bruising process at annular frustum 3 with annular concave platform 4, in large sleeve pipe, pressure liquid is squeezed into from aboveground continuing, pressure liquid enters in plug cylinder, the pressure that pressure liquid produces acts on the top end face of plug core 11, after pressure reaches setting pressure, shear pin 2 is cut off, plug cylinder is separated with rubber plug body, plug cylinder is reserved in reducer union 1, rubber plug body has continued follow-up replacing and has starched operation after entering small casing.
Claims (10)
1. a composite bushing well cementation split plug device, it is characterized in that comprising plug cylinder, reducer union and external diameter are less than the rubber plug body of plug cylinder external diameter, the bottom of plug cylinder and the top of rubber plug body are fixedly installed togather by shear pin, the top cement plug wing being no less than one is fixed with in the upper outside of plug cylinder, the bottom plug wing being no less than one is fixed with at the lower outside of rubber plug body, have in annular frustum wide at the top and narrow at the bottom at the inside middle portion of reducer union, the annular concave platform corresponding with annular frustum is had outside plug cylinder below the top cement plug wing, annular concave platform and annular frustum are fitted together, the lower inside of the bottom plug wing and reducer union is fitted together, all screw thread is had in the upper inner of reducer union and lower outside.
2. composite bushing well cementation split plug device according to claim 1, it is characterized in that plug tube comprises packing element body and upper fixed cover, the upper annular groove being no less than two is had from top to bottom in the outside of packing element body, the upper protruding block corresponding with upper annular groove is fixed with in the inner side of upper fixed cover, upper protruding block is fixedly mounted in annular groove, is fixed with the top cement plug wing being no less than two in the outside of upper fixed cover from top to bottom.
3. composite bushing well cementation split plug device according to claim 2, it is characterized in that annular groove comprises fixing annular groove and is no less than the lower fixing annular groove of, the upper height of height higher than lower fixing annular groove fixing annular groove, upper protruding block comprises fixing projection and is no less than the lower fixing projection of, upper fixing projection is fixedly mounted in fixing annular groove, lower fixing projection is fixedly mounted in lower fixing annular groove, the top cement plug wing comprises the second plug wing that the first plug wing and external diameter are less than the first plug wing external diameter, and the first plug wing is positioned at the top of the second plug wing.
4. the composite bushing well cementation split plug device according to claim 1 or 2 or 3, it is characterized in that rubber plug body comprises plug core and lower fixed cover, sealing plate is fixed with in the lower end of lower fixed cover, the bottom seat of plug core is on sealing plate, the lower annular groove being no less than two is had from top to bottom in the outside of plug core, the lower protruding block corresponding with lower annular groove is fixed with in the inner side being positioned at the lower fixed cover above sealing plate, lower protruding block is fixedly mounted in lower annular groove, is fixed with the bottom plug wing being no less than two in the outside of lower fixed cover from top to bottom.
5. composite bushing well cementation split plug device according to claim 4, it is characterized in that lower annular groove comprises upper limit annular groove and is no less than the lower limit annular groove of, upper limit annular groove is positioned at the top of lower limit annular groove, the height of upper limit annular groove is higher than the height of lower limit annular groove, lower protruding block comprises upper limit projection and is no less than the lower limit projection of, upper limit projection is fixed with inside the upper end of lower fixed cover, upper end and the upper limit projection of lower fixed cover are all fixedly mounted in upper limit position groove, in taper wide at the top and narrow at the bottom inside the lower fixed cover of upper limit projection upper end, the bottom of packing element body and the upper end medial extremity of lower fixed cover are fitted together, lower limit projection is fixedly mounted in lower limit annular groove, the bottom plug wing comprises the 4th plug wing that the 3rd plug wing and external diameter are less than the 3rd plug wing external diameter, the 3rd plug wing is positioned at the top of the 4th plug wing.
6. composite bushing well cementation split plug device according to claim 4, it is characterized in that the bottom of packing element body is along the circumferential direction distributed with the interior radial installing hole being no less than two, the outer radial installing hole corresponding with interior radial installing hole is had in the upper outside of plug core, the bottom of packing element body and the upper outside of plug core are fixedly installed togather by interior radial installing hole, outer radial installing hole and shear pin, the plug core below outer installing hole be installed with the sealing ring together with being no less than between packing element body.
7. composite bushing well cementation split plug device according to claim 5, it is characterized in that the bottom of packing element body is along the circumferential direction distributed with the interior radial installing hole being no less than two, the outer radial installing hole corresponding with interior radial installing hole is had in the upper outside of plug core, the bottom of packing element body and the upper outside of plug core are fixedly installed togather by interior radial installing hole, outer radial installing hole and shear pin, the plug core below outer installing hole be installed with the sealing ring together with being no less than between packing element body.
8. the composite bushing well cementation split plug device according to claim 1 or 2 or 3, is characterized in that the taper that the longitudinal cross-section of the lower end of the lower fixed cover below the bottom plug wing is big up and small down.
9. composite bushing well cementation split plug device according to claim 4, is characterized in that the taper that the longitudinal cross-section of the lower end of the lower fixed cover below the bottom plug wing is big up and small down.
10. composite bushing well cementation split plug device according to claim 7, is characterized in that the taper that the longitudinal cross-section of the lower end of the lower fixed cover below the bottom plug wing is big up and small down.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310513763.1A CN103573212B (en) | 2013-10-28 | 2013-10-28 | Composite bushing well cementation split plug device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310513763.1A CN103573212B (en) | 2013-10-28 | 2013-10-28 | Composite bushing well cementation split plug device |
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| CN103573212A CN103573212A (en) | 2014-02-12 |
| CN103573212B true CN103573212B (en) | 2016-04-06 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358542A (en) * | 2014-11-10 | 2015-02-18 | 中国石油天然气集团公司 | Compound rubber plug for well cementation |
| CN104481453B (en) * | 2014-12-11 | 2017-09-01 | 中国石油天然气股份有限公司 | One kind combination self-locking variable-diameter rubber plug |
| CN106522878A (en) * | 2016-12-08 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Anti-seizing rubber plug |
| CN107013183B (en) * | 2017-05-31 | 2023-03-24 | 中国石油天然气集团有限公司 | Tail pipe rubber plug device |
| CN107605426A (en) * | 2017-08-31 | 2018-01-19 | 中国石油集团渤海钻探工程有限公司 | A kind of double containment bruising device |
| CN112253045A (en) * | 2020-12-08 | 2021-01-22 | 中国石油天然气集团有限公司 | Sliding sleeve type impacting seat |
| CN115874980B (en) * | 2023-03-08 | 2023-05-05 | 西南石油大学 | Anti-sleeve type well cementation rubber plug and assembly method thereof |
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| CN202832369U (en) * | 2012-09-18 | 2013-03-27 | 大港油田集团有限责任公司 | Double-stage composite well cementation rubber plug |
| CN203547655U (en) * | 2013-10-28 | 2014-04-16 | 中国石油集团西部钻探工程有限公司 | Well cementing split rubber plug device of composite casing pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3616850A (en) * | 1970-04-20 | 1971-11-02 | Byron Jackson Inc | Cementing plug launching mandrel |
| US3730267A (en) * | 1971-03-25 | 1973-05-01 | Byron Jackson Inc | Subsea well stage cementing system |
| CN2227193Y (en) * | 1995-02-16 | 1996-05-15 | 新疆石油管理局钻井公司 | Compounded rubber plug |
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Effective date of registration: 20201106 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 834009 cementing fracture engineering company, the Xinjiang Uygur Autonomous Region, Karamay Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |