CN103790533A - Expansion type liner hanger capable of cementing well - Google Patents
Expansion type liner hanger capable of cementing well Download PDFInfo
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- CN103790533A CN103790533A CN201410003505.3A CN201410003505A CN103790533A CN 103790533 A CN103790533 A CN 103790533A CN 201410003505 A CN201410003505 A CN 201410003505A CN 103790533 A CN103790533 A CN 103790533A
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- cementing
- tail pipe
- well
- swollen cone
- expansion tube
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Abstract
The invention provides a well-cementing expansion type liner hanger, which comprises: the lower end of the expansion pipe is connected with a tail pipe buckle; the central tube is arranged in the expansion tube in a penetrating mode, the lower end of the central tube is connected with an expansion cone seat, an expansion cone is sleeved on the outer side of the expansion cone seat, and the lower end of the expansion cone seat is connected with an expansion cone locking claw; and the well cementation rubber plug is connected to the lower end of the expansion cone locking claw and penetrates through the tail pipe buckle. According to the expandable liner hanger capable of cementing, disclosed by the invention, the expansion cone seat can effectively seal the expansion cone and the expansion pipe, and the condition that the working surface of the expansion cone is polluted in the cementing and cement squeezing and displacement processes can be avoided.
Description
Technical field
The present invention has about a kind of extension hanger, especially has the cemented the well buckling type tail pipe hanger of applying about in a kind of petroleum industry field.
Background technology
Bulged tube technology is the new technology being surging forward in recent years, and it can be applicable to the operation process such as drilling well, completion and oil recovery, well workover.Expandable casing patching technology is very ripe at present, and buckling type tail pipe hanger, as the new application structure of one of bulged tube technology, is faced with complex hole condition and construction technology that a lot of expandable casing patchings do not face.
First, in liner completion process, expansion type hanger is by bore hole and former sleeve pipe separate sealed, hanger is arranged in former sleeve pipe, but face bore hole working environment, because the expansion of expansion tube is an accurate process, between expansion cone and expansion tube, have meticulous coordinating, in well cementing process, mud and displacement fluid can flow into expansion type hanger inside, and the interoperation of each structural member in expansion tube is exerted an influence.
Secondly, because hanger appearance and size is larger, and between former sleeve pipe, annular space is less, and there are several layers of rubber ring to form throttle effect, hanger there will be instantaneous high pressure in well cementation squeeze method process, can cause completion tail pipe not complete squeeze method, and hanger has started the problem expanding.
Have, because completion tubular column is very long, need movable tubing string being lowered in process and well cementing process, to guarantee cementing quality, existing expansion type hanger does not have rotatable function.
Therefore, be necessary to provide a kind of new hanger, overcome above-mentioned defect.
Summary of the invention
The object of this invention is to provide the one buckling type tail pipe hanger of can cementing the well, it is swollen cone seat can the swollen cone of effective sealing and expansion tube, and the situation of polluting swollen cone work plane in can avoid cementing the well squeeze method and displacement process occurs.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize:
The invention provides the one buckling type tail pipe hanger of can cementing the well, the described buckling type tail pipe hanger of cementing the well comprises:
Expansion tube, its lower end is connected with tail pipe variable buckle;
Central tube, it is located in described expansion tube, and the lower end of described central tube is connected with swollen cone seat, and the outside of described swollen cone seat is arranged with swollen cone, and the lower end of described swollen cone seat is connected with swollen cone locking jaw;
Cementing plug, it is connected to the lower end of described swollen cone locking jaw, and described cementing plug is located in described tail pipe variable buckle.
In a preferred embodiment, between described cementing plug and described swollen cone locking jaw, be connected by shear pin.
In a preferred embodiment, the lower end of described expansion tube is connected with two public variable buckles, and described two public variable buckles are connected with described tail pipe variable buckle.
In a preferred embodiment, the inside wall of described two public variable buckles radially inwardly convexes with multiple splines, the lateral wall of described swollen cone locking jaw radially outward convexes with multiple locking projections, described swollen cone locking jaw is located in described two public variable buckle, and described spline is embedded between two between described locking projection.
In a preferred embodiment, between described central tube and described expansion tube, be provided with dust ring.
In a preferred embodiment, the upper end of described central tube is connected with drill pipe nipple, and it is female that the outside of described drill pipe nipple is connected with the expansion tube back of the body, and the upper end contact of described expansion tube is on described expansion tube back of the body mother.
In a preferred embodiment, the outside of described swollen cone seat convexes with joint ring, and described joint ring contacts with the inside wall sealing of described expansion tube, and described swollen cone is positioned at the upper end of described joint ring.
In a preferred embodiment, between described joint ring and described expansion tube, be provided with multiple sealing rings.
In a preferred embodiment, between described swollen cone and described expansion tube, be provided with multiple sealing rings.
Feature and the advantage of the buckling type tail pipe hanger of cementing the well of the present invention are: be convexly equipped with the joint ring of swollen cone seat lateral wall can the swollen cone of effective sealing and expansion tube between fitting face, the situation of polluting swollen cone work plane in avoid cementing the well squeeze method and displacement process occurs; Be connected to the cementing plug of swollen cone locking jaw lower end by shear pin, the squeeze method that do not complete that can effectively avoid the instantaneous pressure of squeeze method process generation to cause starts the problem expanding; In addition, multiple locking projections of swollen cone locking jaw are embedded location by multiple splines of two public variable buckles, after can cementing the well in buckling type tail pipe hanger lower going-into-well, according to the rotatable well cementation tubing string of need of work, the buckling type tail pipe hanger that prevents from cementing the well is gone into the well in process, cause tubing string can not be lowered to smoothly the problem in precalculated position because tubing string is long, to improve cementing quality.The buckling type tail pipe hanger of cementing the well of the present invention, is combined hanger with well cementation tubing string, its construction technology is simple.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the buckling type tail pipe hanger of cementing the well of the present invention.
Fig. 2 is the structural representation of the swollen cone locking jaw of the buckling type tail pipe hanger of cementing the well of the present invention.
Fig. 3 is the structural representation that putting into of the buckling type tail pipe hanger of cementing the well of the present invention suppressed plug.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the invention provides the one buckling type tail pipe hanger of can cementing the well, it comprises expansion tube 1, central tube 2 and cementing plug 3, wherein: the lower end of expansion tube 1 is connected with tail pipe variable buckle 4; Central tube 2 is located in described expansion tube 1, and the lower end of described central tube 2 is connected with swollen cone seat 21, and the outside of described swollen cone seat 21 is arranged with swollen cone 22, and the lower end of described swollen cone seat 21 is connected with swollen cone locking jaw 23; Cementing plug 3 is connected to the lower end of described swollen cone locking jaw 23, and described cementing plug 3 is located in described tail pipe variable buckle 4.
Specifically, expansion tube 1 is cylindrical tube substantially, and its lower end is connected with tail pipe variable buckle 4, and this tail pipe variable buckle 4 is for being connected with tail pipe tubing string.In the present invention, between expansion tube 1 and tail pipe variable buckle 4, be connected with two public variable buckles 5, the upper end outside screw of two public variable buckles 5 is connected to the inner side, lower end of expansion tube 1, the lower end outside screw of two public variable buckles 5 is connected to the inner side, upper end of tail pipe variable buckle 4, the inside wall of this pair of public variable buckle 5 radially inwardly convexes with multiple splines 51, and those splines 51 uniformly-spaced arrange along the circumferencial direction of the inside wall of two public variable buckles 5.
The upper end outside screw of swollen cone seat 21 is connected to the inner side, lower end of central tube 2, in the present invention, the lateral wall of swollen cone seat 21 radially outward convexes with joint ring 211, sealing ring 211 contacts with the inside wall sealing of expansion tube 1, be set in the swollen cone 22 lower end contacts in swollen cone seat 21 outsides in the upper end of sealing ring 211, the upper end contact of swollen cone 22 is in the lower end of central tube 2.
Shown in Fig. 2, the upper end inside thread of swollen cone locking jaw 23 is connected to the outside, lower end of swollen cone seat 21, in the present invention, the lateral wall of swollen cone locking jaw 23 radially outward convexes with multiple locking projections 231, and those locking projections 231 uniformly-spaced arrange along the circumferencial direction of the lateral wall of swollen cone locking jaw 23; Further, the lower end of swollen cone locking jaw 23 has multiple spaced locking jaws 232, the lower end of each locking jaw 232 radially outward convexes with fin 233, swollen cone locking jaw 23 be located in two public variable buckles 5 interior after, the spline 51 of two public variable buckles 5 is embedded between the projection of locking between two 231 of swollen cone locking jaw 23, and multiple fins 233 of swollen cone locking jaw 23 lower ends are fastened on the lower end of two public variable buckles 5; In the present invention, between swollen cone locking jaw 23 and two public variable buckle 5, be formed with overcurrent circuit 52, this overcurrent circuit 52 is connected with the annular space 212 between swollen swollen cone seat 21 outer walls and expansion tube 1 of boring seat 21 joint ring 211 bottoms.
The upper end of cementing plug 3 is connected to by shear pin 31 on the fin 233 of swollen cone locking jaw 23 lower ends, and its outside, lower end is arranged with jaw 32, and cementing plug 3 is worn and is sealed in tail pipe variable buckle 4 by its jaw 32.
The course of work of this buckling type tail pipe hanger of can cementing the well is as follows: shown in Figure 3, first, the buckling type tail pipe hanger of can cementing the well is connected to the upper end of tail pipe tubing string, drilling rod tubing string is connected to the upper end of the buckling type tail pipe hanger of can cementing the well, afterwards precalculated position under lower going-into-well; Now, circulating mud, squeeze method, and be lowered to and suppress plug 9 from well head, suppresses plug 9 from entering in the central tube 2 of the buckling type tail pipe hanger of can cementing the well and setting in cementing plug 3; Then, suppress from well head water filling, under the effect of water injection pressure, suppressing plug 9 drives cementing plug 3 axially to move down, when water injection pressure reaches after certain value, the shear pin 31 being connected between cementing plug 3 and swollen cone locking jaw 23 is cut off, and suppresses plug 9 and together falls in tail pipe tubing string with cementing plug 3, completes well cementation; Now, continue from well head water filling, along with the increase of water injection pressure, injected water flows into the overcurrent circuit 52 between swollen cone locking jaw 23 lower ends and two public variable buckle 5 annular space 212 between swollen cone seat 21 and expansion tube 1, under the effect of the water injection pressure constantly increasing, swollen cone seat 21 axially moves up, thereby the card that drives swollen cone locking jaw 23 to throw off two public variable buckles 5 lower ends is established and moved axially, now swollen cone seat 21 drives swollen cone 22 on it to move on axially, to realize the object of expansion expansion tube 1.
The buckling type tail pipe hanger of cementing the well of the present invention, be convexly equipped with the joint ring 211 of swollen cone seat 21 lateral walls can the swollen cone 22 of effective sealing with expansion tube 1 between fitting face, the situation generation of polluting swollen cone work plane in avoid cementing the well squeeze method and displacement process; Be connected to the cementing plug 3 of swollen cone locking jaw 23 lower ends by shear pin 31, the squeeze method that do not complete that can effectively avoid the instantaneous pressure of squeeze method process generation to cause starts the problem expanding; In addition, multiple locking projections 231 of swollen cone locking jaw 23 are embedded location by multiple splines 51 of two public variable buckles 5, after can cementing the well in buckling type tail pipe hanger lower going-into-well, according to the rotatable well cementation tubing string of need of work, the buckling type tail pipe hanger that prevents from cementing the well is gone into the well in process, cause tubing string can not be lowered to smoothly the problem in precalculated position because tubing string is long, to improve cementing quality.The buckling type tail pipe hanger of cementing the well of the present invention, is combined hanger with well cementation tubing string, its construction technology is simple.
According to an embodiment of the invention, between described central tube 2 and described expansion tube 1, be provided with dust ring 7.This dust ring 7 enters in expansion tube 1 for impurity such as mode dusts, and pollutes expansion tube inwall.
According to an embodiment of the invention, between described joint ring 211 and described expansion tube 1, be respectively equipped with multiple sealing rings 8 between described swollen cone 22 and described expansion tube 1.The gap of those sealing rings 8 for sealing between joint ring 211 and expansion tube 1, between swollen cone 22 and expansion tube 1, prevents from polluting in cementing concrete and displacement process swollen cone 22 work planes.
The foregoing is only several embodiments of the present invention, those skilled in the art can carry out various changes or modification and not depart from the spirit and scope of the present invention the embodiment of the present invention according to the disclosed content of application documents.
Claims (9)
1. the buckling type tail pipe hanger of can cementing the well, is characterized in that, the described buckling type tail pipe hanger of cementing the well comprises:
Expansion tube, its lower end is connected with tail pipe variable buckle;
Central tube, it is located in described expansion tube, and the lower end of described central tube is connected with swollen cone seat, and the outside of described swollen cone seat is arranged with swollen cone, and the lower end of described swollen cone seat is connected with swollen cone locking jaw;
Cementing plug, it is connected to the lower end of described swollen cone locking jaw, and described cementing plug is located in described tail pipe variable buckle.
2. the buckling type tail pipe hanger of cementing the well as claimed in claim 1, is characterized in that, between described cementing plug and described swollen cone locking jaw, is connected by shear pin.
3. the buckling type tail pipe hanger of cementing the well as claimed in claim 1, is characterized in that, the lower end of described expansion tube is connected with two public variable buckles, and described two public variable buckles are connected with described tail pipe variable buckle.
4. the buckling type tail pipe hanger of cementing the well as claimed in claim 3, it is characterized in that, the inside wall of described two public variable buckles radially inwardly convexes with multiple splines, the lateral wall of described swollen cone locking jaw radially outward convexes with multiple locking projections, described swollen cone locking jaw is located in described two public variable buckle, and described spline is embedded between two between described locking projection.
5. the buckling type tail pipe hanger of cementing the well as claimed in claim 1, is characterized in that, between described central tube and described expansion tube, is provided with dust ring.
6. the buckling type tail pipe hanger of cementing the well as claimed in claim 1, is characterized in that, the upper end of described central tube is connected with drill pipe nipple, and it is female that the outside of described drill pipe nipple is connected with the expansion tube back of the body, and the upper end contact of described expansion tube is on described expansion tube back of the body mother.
7. the buckling type tail pipe hanger of cementing the well as claimed in claim 1, is characterized in that, the outside of described swollen cone seat convexes with joint ring, and described joint ring contacts with the inside wall sealing of described expansion tube, and described swollen cone is positioned at the upper end of described joint ring.
8. the buckling type tail pipe hanger of cementing the well as claimed in claim 7, is characterized in that, between described joint ring and described expansion tube, is provided with multiple sealing rings.
9. the buckling type tail pipe hanger of cementing the well as claimed in claim 1, is characterized in that, between described swollen cone and described expansion tube, is provided with multiple sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410003505.3A CN103790533B (en) | 2014-01-03 | 2014-01-03 | Expansion type liner hanger capable of cementing well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410003505.3A CN103790533B (en) | 2014-01-03 | 2014-01-03 | Expansion type liner hanger capable of cementing well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103790533A true CN103790533A (en) | 2014-05-14 |
| CN103790533B CN103790533B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410003505.3A Active CN103790533B (en) | 2014-01-03 | 2014-01-03 | Expansion type liner hanger capable of cementing well |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604508A (en) * | 2015-12-18 | 2016-05-25 | 中国石油天然气股份有限公司 | Liner hanger |
| CN107724991A (en) * | 2017-10-30 | 2018-02-23 | 华鼎鸿基石油工程技术(北京)有限公司 | Buckling type tail pipe hanger with slips |
| CN109736733A (en) * | 2019-02-01 | 2019-05-10 | 中国地质科学院勘探技术研究所 | A device for lowering an expansion pipe |
| CN113389509A (en) * | 2021-07-20 | 2021-09-14 | 河北上善石油机械有限公司 | Liner hanger for well completion |
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| CN203729925U (en) * | 2014-01-03 | 2014-07-23 | 中国石油天然气股份有限公司 | Expansion type liner hanger capable of cementing well |
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- 2014-01-03 CN CN201410003505.3A patent/CN103790533B/en active Active
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| US20050263292A1 (en) * | 2004-05-27 | 2005-12-01 | Braddick Britt O | Expandable liner hanger system and method |
| US20080257560A1 (en) * | 2007-04-20 | 2008-10-23 | Brisco David P | Running Tool for Expandable Liner Hanger and Associated Methods |
| CN101122220A (en) * | 2007-09-21 | 2008-02-13 | 中国石油天然气集团公司 | Swelling type screen pipe suspension method and swelling type screen pipe hanger |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604508A (en) * | 2015-12-18 | 2016-05-25 | 中国石油天然气股份有限公司 | Liner hanger |
| CN105604508B (en) * | 2015-12-18 | 2018-04-06 | 中国石油天然气股份有限公司 | Liner hanger |
| CN107724991A (en) * | 2017-10-30 | 2018-02-23 | 华鼎鸿基石油工程技术(北京)有限公司 | Buckling type tail pipe hanger with slips |
| CN109736733A (en) * | 2019-02-01 | 2019-05-10 | 中国地质科学院勘探技术研究所 | A device for lowering an expansion pipe |
| CN113389509A (en) * | 2021-07-20 | 2021-09-14 | 河北上善石油机械有限公司 | Liner hanger for well completion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103790533B (en) | 2016-08-17 |
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