CN101598006A - A kind of hydraulic buckling type tail pipe hanger - Google Patents
A kind of hydraulic buckling type tail pipe hanger Download PDFInfo
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- CN101598006A CN101598006A CNA2009101580361A CN200910158036A CN101598006A CN 101598006 A CN101598006 A CN 101598006A CN A2009101580361 A CNA2009101580361 A CN A2009101580361A CN 200910158036 A CN200910158036 A CN 200910158036A CN 101598006 A CN101598006 A CN 101598006A
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- tail pipe
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Abstract
A kind of hydraulic buckling type tail pipe hanger, a kind of hydraulic buckling type tail pipe hanger, comprise: the drill rod thread and the drill string of back-off sub upper end are spirally connected, the internal thread and the central tube of back-off sub lower end are spirally connected, the outside socket expansion cone of central tube, expansion cone is connected with the float valve cover by shear pin B, expansion cone is free to slide on central tube, expansion cone, expansion tube realize that by several O-ring seal movable sealing cooperates with central tube, it is characterized in that: the screw thread of central tube lower end and float valve cover are spirally connected, and put at float valve hinge seat, hinge, shift fork, valve gap and spring are installed.The present invention has simple in structure, and easy operation hangs the success rate height, and airtight quality is good, and behind the tail tube hanging, latus rectum is big in the tubing string, is convenient to later stage drilling work, and application advantage is obvious in ultradeep well and extended horizontal well.
Description
Technical field
The present invention relates to the suspension tail pipe device in a kind of oil drilling completion, particularly a kind of hydraulic buckling type tail pipe hanger.
Background technology
At present, the on-the-spot extension hanger that uses mainly contains two kinds of form of structure, i.e. mechanical type and fluid pressure type.Mechanical structure is simple, and is strict to handling, and it is unreliable that seat is hung, and seat is hung the back latus rectum and diminished, and is unfavorable for subsequent job, and seat envelope effect is bad, and there is the sealing leak problem in the casing annulus cement sheath, is applicable to straight, shallow well, and range of application is narrower.
Summary of the invention
Deficiency at above-mentioned technical problem exists the purpose of this invention is to provide a kind of hydraulic buckling type tail pipe hanger.
Technical scheme of the present invention is as follows:
A kind of hydraulic buckling type tail pipe hanger, a kind of hydraulic buckling type tail pipe hanger, comprise: the drill rod thread and the drill string of back-off sub upper end are spirally connected, the internal thread and the central tube of back-off sub lower end are spirally connected, the outside socket expansion cone of central tube, expansion cone is connected with the float valve cover by shear pin B, expansion cone is free to slide on central tube, expansion cone, expansion tube realize that by several O-ring seal movable sealing cooperates with central tube, it is characterized in that: the screw thread of central tube lower end and float valve cover are spirally connected, and put at float valve hinge seat, hinge, shift fork, valve gap and spring are installed.
Described float valve cover is cylindric, and it is provided with pin-and-hole in two ends up and down, and the pin-and-hole of its upper end is pegged graft with pin and shift fork, and the pin-and-hole of lower end is pegged graft with pin and hinge seat, hinge, valve gap, spring.
Described hinge seat is spill, and hinge is round rectangle, and hinge is arranged on the indentation, there of hinge seat; The two ends of described hinge are respectively equipped with pin-and-hole, and one end pin-and-hole is pegged graft by pin and hinge seat, and the other end is by pin and valve gap grafting, are provided with spring at the splicing position of hinge and hinge seat, and valve gap is reversed for downward 90 °.
The internal thread of the described back-off sub lower end external screw thread and the support set of giving up is spirally connected, and give up support set and spline housing are spirally connected, and spline housing is pegged graft by big lock dog with giving up.
The screw thread and the expansion tube of spline housing lower end are spirally connected, and the screw thread of expansion tube lower end and tieback tube are spirally connected, and tieback tube lower end screw thread and casing coupling are spirally connected, and the screw thread of casing coupling lower end and tail pipe string are spirally connected, and described tail pipe string is connected by a plurality of sleeve pipes.
Under the effect of spring, make valve gap and plug hanging seat fitted seal bottom tubing string, valve gap upper tube column pressure continues to rise, and exercises expansion tube and the applying of borehole wall sleeve pipe on the expansion cone, and the realization seat is hung.
Give up support set and spline housing gets loose, back-off sub, the support set of giving up, give up, big lock dog, central tube, the top cover of giving up, expansion cone, nut, float valve are closed cover, shift fork, valve gap, float valve cover, hinge seat, hinge propose pit shaft with drill string.
The present invention utilizes hydraulic pressure distending expansion tube closely to contact with internal surface of sleeve pipe and hangs tail pipe; bigger improvement is arranged on structure design; the float valve assembly cover plate can be sealed the bottom endoporus in the expansion process, makes bottom endoporus internal pressure not continue to raise, and the protection lower mechanisms is not damaged.The present invention has simple in structure, and easy operation hangs the success rate height, and airtight quality is good, and behind the tail tube hanging, latus rectum is big in the tubing string, is convenient to later stage drilling work, and application advantage is obvious in ultradeep well and extended horizontal well.
Description of drawings
Fig. 1 is a structural profile schematic diagram of the present invention;
Fig. 2 is the structural profile schematic diagram after Fig. 1 amplifies.
Among the figure: 1 back-off sub, 2 gives up that support set, 3 spline housings, 4 are given up, 5 shear pin A, 6 big lock dogs, 7 central tubes, 8 give up the top cover, 9 expansion tubes, 10 expansion cone, 11 shear pin B, 12 tieback tubes, 13 nuts, 14 float valves are closed cover, 15 shift forks, 16 valve gaps, 17 float valve covers, 18 hinge seats, 19 hinges, 20 plug hanging seats, 21 drilling rod plugs, 22 shear pin C, 23 tail pipe plugs, 24 casing couplings, 25 tail pipe strings, 26 float collars.
The specific embodiment
As Fig. 1 or shown in Figure 2, the drill rod thread and the drill string of back-off sub 1 upper end are spirally connected, the internal thread and the central tube 7 of back-off sub 1 lower end are spirally connected, the outside socket expansion cone 10 of central tube 7, expansion cone 10 is connected with float valve cover 17 by shear pin B 11, expansion cone 10 is free to slide on central tube 7, and expansion cone 10, expansion tube 9 realize that by several O-ring seal movable sealing cooperates with central tube 7.The screw thread of central tube 7 lower ends and float valve cover 17 are spirally connected, and on float valve cover 17 hinge seat 18, hinge 19, shift fork 15, valve gap 16 and spring are installed.Described float valve cover 17 is cylindric, it is provided with pin-and-hole in two ends up and down, the pin-and-hole of its upper end is pegged graft with pin and shift fork 15, the pin-and-hole of lower end is pegged graft with pin and hinge seat 18, hinge 19, valve gap 16, spring, described hinge seat 18 is spill, hinge 19 is round rectangle, and hinge 19 is arranged on the indentation, there of hinge seat 18.The two ends of described hinge 19 are respectively equipped with pin-and-hole, and one end pin-and-hole is pegged graft by pin and hinge seat 18, and the other end is pegged graft by pin and valve gap 16, are provided with spring at the splicing position of hinge 19 and hinge seat 18, make valve gap 16 downward 90 ° reverse.
The internal thread of the described back-off sub 1 lower end external screw thread and the support set 2 of giving up is spirally connected, give up support set 2 and spline housing 3 is spirally connected, spline housing 3 and give up and 4 peg graft by big lock dog 6, the screw thread and the expansion tube 9 of spline housing 3 lower ends are spirally connected, the screw thread and the tieback tube 12 of expansion tube 9 lower ends are spirally connected, tieback tube 12 lower end screw threads and casing coupling 24 are spirally connected, and the screw thread and the tail pipe string 25 of casing coupling 24 lower ends are spirally connected, and described tail pipe string 25 is connected by a plurality of sleeve pipes.The screw thread and the float collar 26 of tail pipe string 25 lower ends are spirally connected, described float collar 26 inner float collar bruising pedestal and the ball floats installed.Tieback tube 12 inside are equipped with plug hanging seat 20 and tail pipe plug 23, and plug hanging seat 20 is spirally connected with tieback tube 12, and plug hanging seat 20 is connected by shear pin C22 pin with tail pipe plug 23.Behind the cemented up slurry, after well head place drill string and water tap disconnection, the endoporus of drilling rod plug 21 by drill string utilized fluid pressure from the top, drilling rod plug 21 is depressed into tail pipe plug 23 places, cut off shear pin C22, drilling rod plug 21 is depressed into float collar 26 after being combined into Compounded rubber plug with tail pipe plug 23.
Operating principle: the drill rod thread joint of back-off sub 1 upper end is connected with drill string, with the present invention with the tail pipe string 25 times precalculated position in the pit shaft, after the cement that designs is pumped into tubing string according to quantity, drop into drilling rod plug 21 then, pump into completion fluid again, described completion fluid promotes drilling rod plug 21 and moves downward along central tube 7 inwalls, after 23 bruisings of tail pipe plug, cut off shear pin C22, drilling rod plug 21 and tail pipe plug 23 are combined into Compounded rubber plug, Compounded rubber plug continues descending along tail pipe string 25 inwalls, scrape off the residual cement of tail pipe string 25 inwalls simultaneously, Compounded rubber plug comes downwards to float collar 26, makes bore seal of the present invention, continue to improve pump pressure, this moment, the tubing string internal pressure rose, and cut off shear pin B11, and expansion cone 10 rises, shift fork 15 unclamps, under the effect of spring, make valve gap 16 and plug hanging seat 20 fitted seal bottom tubing strings, valve gap 16 upper tube column pressures continue to rise, exercise expansion tube 9 on the expansion cone 10 and fit with borehole wall sleeve pipe, the realization seat is hung.
The internal diameter of central tube 7 is identical with the internal diameter of upper drilling string.There is at least one circular protrusion in expansion tube 9 outsides, and circular protrusion is identical with the external diameter of expansion tube 9 ends, and expansion cone 10 is an annular.Expansion cone 10 realizes that by several cushion rubber movable sealing cooperates with central tube 7 and expansion tube 9, and the long awl 10 that expands slides on central tube 7.
Claims (7)
1. hydraulic buckling type tail pipe hanger, comprise: the drill rod thread and the drill string of back-off sub (1) upper end are spirally connected, the internal thread and the central tube (7) of back-off sub (1) lower end are spirally connected, the outside socket expansion cone (10) of central tube (7), expansion cone (10) is connected with float valve cover (17) by shear pin B (11), expansion cone (10) is free to slide on central tube (7), expansion cone (10), expansion tube (9) realizes that by several O-ring seal movable sealing cooperates with central tube (7), it is characterized in that: the screw thread and the float valve cover (17) of central tube (7) lower end are spirally connected, and hinge seat (18) is installed on float valve cover (17), hinge (19), shift fork (15), valve gap (16) and spring.
2. a kind of hydraulic buckling type tail pipe hanger according to claim 1, it is characterized in that: described float valve cover (17) is cylindric, it is provided with pin-and-hole in two ends up and down, the pin-and-hole of its upper end is pegged graft with pin and shift fork (15), and the pin-and-hole of lower end is pegged graft with pin and hinge seat (18), hinge (19), valve gap (16), spring.
3. a kind of hydraulic buckling type tail pipe hanger according to claim 2 is characterized in that: described hinge seat (18) is spill, and hinge (19) is round rectangle, and hinge (19) is arranged on the indentation, there of hinge seat (18); The two ends of described hinge (19) are respectively equipped with pin-and-hole, one end pin-and-hole is pegged graft by pin and hinge seat (18), the other end is pegged graft by pin and valve gap (16), is provided with spring at the splicing position of hinge (19) and hinge seat (18), and valve gap (16) is reversed for downward 90 °.
4. a kind of hydraulic buckling type tail pipe hanger according to claim 1, it is characterized in that: the internal thread of described back-off sub (1) the lower end external screw thread and the support set (2) of giving up is spirally connected, give up support set (2) and spline housing (3) is spirally connected, and pegs graft by big lock dog (6) in spline housing (3) and give up (4).
5. a kind of hydraulic buckling type tail pipe hanger according to claim 1, it is characterized in that: the screw thread and the expansion tube (9) of spline housing (3) lower end are spirally connected, the screw thread and the tieback tube (12) of expansion tube (9) lower end are spirally connected, tieback tube (12) lower end screw thread and casing coupling (24) are spirally connected, the screw thread and the tail pipe string (25) of casing coupling (24) lower end are spirally connected, and described tail pipe string (25) is connected by a plurality of sleeve pipes.
6. a kind of hydraulic buckling type tail pipe hanger according to claim 1, it is characterized in that: under the effect of spring, make valve gap (16) and plug hanging seat (20) fitted seal bottom tubing string, valve gap (16) upper tube column pressure continues to rise, expansion cone (10) goes up exercises expansion tube (9) and the applying of borehole wall sleeve pipe, and the realization seat is hung.
7. a kind of hydraulic buckling type tail pipe hanger according to claim 1, it is characterized in that: the support set of giving up (2) gets loose with spline housing (3), and back-off sub (1), the support set of giving up (2), give up (4), big lock dog (6), central tube (7), give up top cover (8), expansion cone (10), nut (13), float valve are closed cover (14), shift fork (15), valve gap (16), float valve cover (17), hinge seat (18), hinge (19) with drill string proposition pit shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101580361A CN101598006A (en) | 2009-07-17 | 2009-07-17 | A kind of hydraulic buckling type tail pipe hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101580361A CN101598006A (en) | 2009-07-17 | 2009-07-17 | A kind of hydraulic buckling type tail pipe hanger |
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| Publication Number | Publication Date |
|---|---|
| CN101598006A true CN101598006A (en) | 2009-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101580361A Pending CN101598006A (en) | 2009-07-17 | 2009-07-17 | A kind of hydraulic buckling type tail pipe hanger |
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| CN (1) | CN101598006A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102979472A (en) * | 2012-12-06 | 2013-03-20 | 中国石油集团西部钻探工程有限公司 | Expansion hanger |
| CN103089193A (en) * | 2011-10-31 | 2013-05-08 | 中国石油化工股份有限公司 | Tail pipe completion method by plugging expandable casing on top of screen pipe |
| CN103628834A (en) * | 2012-08-23 | 2014-03-12 | 中国石油天然气股份有限公司 | Locking type expansion liner hanger |
| CN103742092A (en) * | 2013-12-31 | 2014-04-23 | 中国石油天然气股份有限公司 | Expansion pipe completion tool |
| CN103790533A (en) * | 2014-01-03 | 2014-05-14 | 中国石油天然气股份有限公司 | Expansion type liner hanger capable of cementing well |
| CN104453776B (en) * | 2014-11-14 | 2017-01-18 | 中国石油集团长城钻探工程有限公司 | Six-level branching well built-in window sealing well completion method |
| CN111577180A (en) * | 2019-02-18 | 2020-08-25 | 中国石油天然气集团有限公司 | Disposable type tail pipe hanger |
| CN113803017A (en) * | 2020-06-15 | 2021-12-17 | 中国石油化工股份有限公司 | Take orbital liner hanger |
| CN114718490A (en) * | 2022-03-30 | 2022-07-08 | 东营市海天自动化工程有限责任公司 | Liner hanger for oil field with high mechanical strength |
| CN116446811A (en) * | 2023-06-15 | 2023-07-18 | 威飞海洋装备制造有限公司 | Underwater wellhead annular sealing assembly running-in device |
-
2009
- 2009-07-17 CN CNA2009101580361A patent/CN101598006A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103089193A (en) * | 2011-10-31 | 2013-05-08 | 中国石油化工股份有限公司 | Tail pipe completion method by plugging expandable casing on top of screen pipe |
| CN103628834B (en) * | 2012-08-23 | 2017-06-06 | 中国石油天然气股份有限公司 | Locking type expansion liner hanger |
| CN103628834A (en) * | 2012-08-23 | 2014-03-12 | 中国石油天然气股份有限公司 | Locking type expansion liner hanger |
| CN102979472A (en) * | 2012-12-06 | 2013-03-20 | 中国石油集团西部钻探工程有限公司 | Expansion 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 |
| CN103742092A (en) * | 2013-12-31 | 2014-04-23 | 中国石油天然气股份有限公司 | Expansion pipe completion tool |
| CN103790533A (en) * | 2014-01-03 | 2014-05-14 | 中国石油天然气股份有限公司 | Expansion type liner hanger capable of cementing well |
| CN103790533B (en) * | 2014-01-03 | 2016-08-17 | 中国石油天然气股份有限公司 | Expansion type liner hanger capable of cementing well |
| CN104453776B (en) * | 2014-11-14 | 2017-01-18 | 中国石油集团长城钻探工程有限公司 | Six-level branching well built-in window sealing well completion method |
| CN111577180A (en) * | 2019-02-18 | 2020-08-25 | 中国石油天然气集团有限公司 | Disposable type tail pipe hanger |
| CN113803017A (en) * | 2020-06-15 | 2021-12-17 | 中国石油化工股份有限公司 | Take orbital liner hanger |
| CN114718490A (en) * | 2022-03-30 | 2022-07-08 | 东营市海天自动化工程有限责任公司 | Liner hanger for oil field with high mechanical strength |
| CN114718490B (en) * | 2022-03-30 | 2023-11-17 | 河北上善石油机械有限公司 | Tail pipe hanger with high mechanical strength for oil field |
| CN116446811A (en) * | 2023-06-15 | 2023-07-18 | 威飞海洋装备制造有限公司 | Underwater wellhead annular sealing assembly running-in device |
| CN116446811B (en) * | 2023-06-15 | 2023-10-24 | 威飞海洋装备制造有限公司 | Underwater wellhead annular sealing assembly running-in device |
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Application publication date: 20091209 |