CN103758476A - Non-cementing expansion type drilling liner hanger - Google Patents
Non-cementing expansion type drilling liner hanger Download PDFInfo
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- CN103758476A CN103758476A CN201410003236.0A CN201410003236A CN103758476A CN 103758476 A CN103758476 A CN 103758476A CN 201410003236 A CN201410003236 A CN 201410003236A CN 103758476 A CN103758476 A CN 103758476A
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- tail pipe
- swollen cone
- well cementation
- buckling type
- expansion tube
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Abstract
The invention provides a non-cementing expansion type drilling liner hanger which comprises an expansion pipe, a central pipe, a bottom plug and a pull rod. A liner cross-over is connected to the lower end of the expansion pipe. The central pipe penetrates the expansion pipe. An expansion cone seat is connected to the lower end of the central pipe. An expansion cone is sleeved on the outer side of the expansion cone seat. An expansion cone locking jaw is connected to the lower end of the expansion cone seat. The bottom plug is connected to the lower end of the expansion cone locking jaw. The bottom plug hermitically penetrates the liner cross-over. The pull rod penetrates the central pipe. The lower end of the pull rod is connected to the bottom plug. The non-cementing expansion type drilling liner hanger has the advantages that the hanger is suitable for non-cementing well completion processes, and the problem that the non-cementing expansion type drilling liner hanger starts expanding when not tripping in place due to the fact that the instant high resistance generated during pipe column tripping in acts on the working face of the expansion cone can be solved effectively by the bottom plug connected to the lower end of the expansion cone locking jaw.
Description
Technical field
The present invention has about a kind of extension hanger, especially has about the non-well cementation buckling type tail pipe hanger of applying 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, 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 moment high-drag in the process of going into the well, and this moment high-drag acts on swollen cone work plane, can cause hanger not to be lowered to and put in place to start to expand.
Secondly, because completion tubular column is very long, need movable tubing string while being hampered in process being lowered to, to guarantee that tubing string is smoothly in lower going-into-well, 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 a kind of non-well cementation buckling type tail pipe hanger, be applicable to non-well cementation class well-completing process, the end that this non-well cementation buckling type tail pipe hanger connects by its swollen cone locking jaw lower end, is stifled, can effectively avoid tubing string to be lowered to that moment higher drag that process produces acts on swollen cone work plane and the non-well cementation buckling type tail pipe hanger causing is not lowered to put in place and starts the problem that expands.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize:
The invention provides a kind of non-well cementation buckling type tail pipe hanger, described non-well cementation buckling type tail pipe hanger 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;
The end, is stifled, and it is connected to the lower end of described swollen cone locking jaw, and stifled sealing is located in described tail pipe variable buckle at the described end;
Pull bar, it is located in described central tube, and the lower end of described pull bar is connected to the described end and blocks.
In a preferred embodiment, block up between described swollen cone locking jaw and be connected by shear pin at the described end.
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, the upper end of described pull bar radially outward convexes with ring fin, and the inside wall of described swollen cone locking jaw radially inwardly convexes with shoulder portion, and the internal diameter of described shoulder portion is less than the external diameter of described ring fin.
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 non-well cementation buckling type tail pipe hanger 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 end that is connected to swollen cone locking jaw lower end by shear pin, is stifled, can effectively avoid tubing string to be lowered to that moment higher drag that process produces acts on swollen cone work plane and the non-well cementation buckling type tail pipe hanger causing is not lowered to put in place and starts the problem that expands; In addition, multiple locking projections of swollen cone locking jaw are embedded location by multiple splines of two public variable buckles, after in non-well cementation buckling type tail pipe hanger lower going-into-well, according to need of work rotatable well lower tubular column, prevent that non-well cementation buckling type tail pipe hanger from going into the well in process, because tubing string is long, cause tubing string can not be lowered to smoothly the problem in precalculated position.Non-well cementation buckling type tail pipe hanger of the present invention, is applicable to any non-well cementation class well-completing process, and 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 non-well cementation buckling type tail pipe hanger of the present invention.
Fig. 2 is the structural representation of the swollen cone locking jaw of non-well cementation buckling type tail pipe hanger of the present invention.
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 a kind of non-well cementation buckling type tail pipe hanger, it comprises expansion tube 1, central tube 2, the end stifled 3 and pull bar 4, wherein: the lower end of expansion tube 1 is connected with tail pipe variable buckle 5; 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; The end stifled 3, is connected to the lower end of described swollen cone locking jaw 23, and stifled 3 sealings are located in described tail pipe variable buckle 5 at the described end; Pull bar 4 is located in described central tube 2, and the lower end of described pull bar 4 is connected at the described end stifled 3.
Specifically, expansion tube 1 is cylindrical tube substantially, and its lower end is connected with tail pipe variable buckle 5, and this tail pipe variable buckle 5 is for being connected with tail pipe tubing string.In the present invention, between expansion tube 1 and tail pipe variable buckle 5, be connected with two public variable buckles 6, the upper end outside screw of two public variable buckles 6 is connected to the inner side, lower end of expansion tube 1, the lower end outside screw of two public variable buckles 6 is connected to the inner side, upper end of tail pipe variable buckle 5, the inside wall of this pair of public variable buckle 6 radially inwardly convexes with multiple splines 61, and those splines 61 uniformly-spaced arrange along the circumferencial direction of the inside wall of two public variable buckles 6.
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 6 interior after, the spline 61 of two public variable buckles 6 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 6; In the present invention, between swollen cone locking jaw 23 and two public variable buckle 6, be formed with overcurrent circuit 62, this overcurrent circuit 62 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 at the end stifled 3 is connected to by shear pin 31 on the fin 233 of swollen cone locking jaw 23 lower ends, and its lower end sealing is located in tail pipe variable buckle 5.
The course of work of this non-well cementation buckling type tail pipe hanger is as follows: first, non-well cementation buckling type tail pipe hanger is connected to the upper end of tail pipe tubing string, drilling rod tubing string is connected to the upper end of non-well cementation buckling type tail pipe hanger, afterwards precalculated position under lower going-into-well; Now, from well head water filling, suppress, water injection pressure is delivered to the upper surface at the end stifled 3 from central tube 2, under the effect of water injection pressure, the shear pin 31 being connected between the end stifled 3 and swollen cone locking jaw 23 is cut off, and stifled 3 descending cooperations with tail pipe variable buckle 5 of the end form sealing state; Now, continuation is suppressed from well head water filling, along with the increase of water injection pressure, injected water flows into the overcurrent circuit 62 between swollen cone locking jaw 23 lower ends and two public variable buckle 6 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 locking jaw 232 that drives swollen cone locking jaw 23 is thrown off the card of two public variable buckles 6 lower ends and is established and move axially, expand and start, now continue to suppress, swollen cone seat 21 drives swollen cone 22 on it to move on axially, completes expansion tube 1 expansion operation.
After treating swollen cone 22 expansion expansion tubes 1, upper lifting pipe post, when on shoulder portion 234 contacts of the swollen cone locking jaw 23 ring fin 41 at pull bar 4, continue upper lifting pipe post, now pull bar 4 is threaded in the stifled 3 disengaging tail pipe variable buckles 5 in the end by its lower end of drive, until the end stifled 3 is proposed to well heads, completes well passage.
Non-well cementation buckling type tail pipe hanger 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 and expansion tube 1 between fitting face; By shear pin 31, be connected to the end of swollen cone locking jaw 23 lower ends stifled 3, can effectively avoid tubing string to be lowered to that moment higher drag that process produces acts on swollen cone work plane and the non-well cementation buckling type tail pipe hanger causing is not lowered to put in place and starts the problem that expands; In addition, multiple locking projections 231 of swollen cone locking jaw 23 are embedded location by multiple splines 61 of two public variable buckles 6, after in non-well cementation buckling type tail pipe hanger lower going-into-well, according to need of work rotatable well lower tubular column, prevent that non-well cementation buckling type tail pipe hanger from going into the well in process, because tubing string is long, cause tubing string can not be lowered to smoothly the problem in precalculated position.Non-well cementation buckling type tail pipe hanger of the present invention, is applicable to any non-well cementation class well-completing process, and 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 8.This dust ring 8 enters in expansion tube 1 for preventing the impurity such as dust, 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 9 between described swollen cone 22 and described expansion tube 1.The gap of those sealing rings 9 for sealing between joint ring 211 and expansion tube 1, between swollen cone 22 and expansion tube 1, improves the sealing performance of non-well cementation buckling type tail pipe hanger.
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 (10)
1. a non-well cementation buckling type tail pipe hanger, is characterized in that, described non-well cementation buckling type tail pipe hanger 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;
The end, is stifled, and it is connected to the lower end of described swollen cone locking jaw, and stifled sealing is located in described tail pipe variable buckle at the described end;
Pull bar, it is located in described central tube, and the lower end of described pull bar is connected to the described end and blocks.
2. non-well cementation buckling type tail pipe hanger as claimed in claim 1, is characterized in that, block up between described swollen cone locking jaw and is connected by shear pin at the described end.
3. non-well cementation buckling type tail pipe hanger 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. non-well cementation buckling type tail pipe hanger 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. non-well cementation buckling type tail pipe hanger as claimed in claim 1, is characterized in that, between described central tube and described expansion tube, is provided with dust ring.
6. non-well cementation buckling type tail pipe hanger 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. non-well cementation buckling type tail pipe hanger 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. non-well cementation buckling type tail pipe hanger as claimed in claim 1, it is characterized in that, the upper end of described pull bar radially outward convexes with ring fin, and the inside wall of described swollen cone locking jaw radially inwardly convexes with shoulder portion, and the internal diameter of described shoulder portion is less than the external diameter of described ring fin.
9. non-well cementation buckling type tail pipe hanger as claimed in claim 7, is characterized in that, between described joint ring and described expansion tube, is provided with multiple sealing rings.
10. non-well cementation buckling type tail pipe hanger 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 |
|---|---|---|---|
| CN201410003236.0A CN103758476B (en) | 2014-01-03 | 2014-01-03 | Non-well cementation buckling type tail pipe hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410003236.0A CN103758476B (en) | 2014-01-03 | 2014-01-03 | Non-well cementation buckling type tail pipe hanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103758476A true CN103758476A (en) | 2014-04-30 |
| CN103758476B CN103758476B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410003236.0A Active CN103758476B (en) | 2014-01-03 | 2014-01-03 | Non-well cementation buckling type tail pipe hanger |
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Cited By (3)
| 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 |
| CN109854201A (en) * | 2019-04-01 | 2019-06-07 | 华鼎鸿基石油工程技术(北京)有限公司 | One kind is every adopting packer and every adopting construction method |
| CN110017110A (en) * | 2018-01-08 | 2019-07-16 | 中国石油化工股份有限公司 | A kind of embedded slips extension hanger |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201460778U (en) * | 2009-07-30 | 2010-05-12 | 中国石油天然气股份有限公司 | Expansion pipe type tail pipe hanger |
| CN202325333U (en) * | 2011-12-03 | 2012-07-11 | 中国石油集团西部钻探工程有限公司 | Expandable liner hanger |
| CN202810736U (en) * | 2012-09-05 | 2013-03-20 | 上海管力卜石油设备有限公司 | Thermal recovery horizontal well expansion pipe hanger |
| CN102979472B (en) * | 2012-12-06 | 2015-06-17 | 中国石油集团西部钻探工程有限公司 | Expansion hanger |
| CN203161141U (en) * | 2012-12-07 | 2013-08-28 | 中国石油集团西部钻探工程有限公司 | Non-well-cementing expansion drilling liner hanger |
| CN203547617U (en) * | 2013-11-26 | 2014-04-16 | 潍坊宇宏石油机械有限公司 | Expansion pipe liner hanger |
| CN203729924U (en) * | 2014-01-03 | 2014-07-23 | 中国石油天然气股份有限公司 | Non-well-cementation expansion type drilling liner hanger |
-
2014
- 2014-01-03 CN CN201410003236.0A patent/CN103758476B/en active Active
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 | Extension hanger |
| CN110017110A (en) * | 2018-01-08 | 2019-07-16 | 中国石油化工股份有限公司 | A kind of embedded slips extension hanger |
| CN110017110B (en) * | 2018-01-08 | 2021-03-23 | 中国石油化工股份有限公司 | Embedded slip liner hanger |
| CN109854201A (en) * | 2019-04-01 | 2019-06-07 | 华鼎鸿基石油工程技术(北京)有限公司 | One kind is every adopting packer and every adopting construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103758476B (en) | 2016-04-06 |
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