CN2203355Y - Screen pipe hanger - Google Patents
Screen pipe hanger Download PDFInfo
- Publication number
- CN2203355Y CN2203355Y CN 94215070 CN94215070U CN2203355Y CN 2203355 Y CN2203355 Y CN 2203355Y CN 94215070 CN94215070 CN 94215070 CN 94215070 U CN94215070 U CN 94215070U CN 2203355 Y CN2203355 Y CN 2203355Y
- Authority
- CN
- China
- Prior art keywords
- lock ring
- gland
- thread
- central tube
- outside
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Earth Drilling (AREA)
Abstract
The utility model relates to a screen pipe hanger, which is characterized in that the outer circumference of a central pipe (6) is provided with saw tooth-typed threads; the outer side of the central pipe (6) is tightly provided with a lock ring (5) with an opening; both of the inner side and the outer side of the lock ring (5) are provided with saw tooth threads; both of the outer screw pitch and the tooth depth of the saw tooth threads are larger than that of the inner screw threads; the inner screw threads of the lock ring (5) are corresponding to the screw threads of the central pipe (6); the outer circumference of the lock ring (5) is provided with an inner pressure sleeve (3) in nestification; the inner side of the inner pressure sleeve (3) is provided with screw threads corresponding to the saw tooth threads on the outer side of the lock ring (5); the middle between inner side of the inner pressure sleeve (3) and the outer side of the lock ring (5) is provided with a gap; the outside of the inner pressure sleeve (3) is provided with a pressing sleeve (1); the inner pressure sleeve (3) is connected with the pressing sleeve (1) through an unsealing shear pins (4).
Description
The utility model relates to the interior sand control installation screen pipe hanger of pipe under a kind of oil well.
In the prior art, screen pipe hanger has been transformed into the drillability material by the alloy material manufacturing, in case its objective is when screen pipe hanger is difficult to deblocking, can be lowered to milling tool it is worn away.But existing drillability screen pipe hanger has so not only increased the processing charges of screen pipe hanger itself because its deblocking complex structure causes whole screen pipe hanger length long, has also increased the input of human, financial, and material resources power when wearing away simultaneously.
The purpose of this utility model is to design a kind of locking and separates the sealing mechanism stack, thereby shortens the screen pipe hanger of length.
The utility model is by gland (1), central tube top connection (2), interior gland (3), deblocking shear pin (4), lock ring (5), central tube (6), slips (7), slips ring (8), cartridge (9), anti-rotation shear pin (10), lower contact compositions such as (11), on central tube (6) exterior periphery saw-tooth thread is arranged, central tube (6) outside hugs the lock ring (5) of opening, on lock ring (5) inboard and the outside saw-tooth thread is arranged all, and the pitch of its outside screw and depth of threat are all greater than its inside thread, the inside thread of lock ring (5) is corresponding with the saw-tooth thread on the central tube (6), on the excircle of lock ring (5), be superimposed with interior gland (3), there is the corresponding screw thread of saw-tooth thread with lock ring (5) outside inboard of interior gland (3), and certain clearance is arranged between them, gland (1) is arranged in interior gland (3) outside, be connected by deblocking shear pin (4) between interior gland (3) and the gland (1).
Advantage of the present utility model is: compact conformation, and length reduces more than the 0.7m than existing screen pipe hanger; The processing cost of screen pipe hanger and the maintenance cost of oil well have been reduced significantly.
Fig. 1 is the screen pipe hanger half sectional view;
Fig. 2 is 1 enlarged drawing of screen pipe hanger;
Fig. 3 is a screen pipe hanger down well placement schematic diagram.Comprising: completion tubular column (13), sleeve pipe (14), screen casing hang (15), screen casing (16) and dead stifled (17).
The utility model is further specified as follows below in conjunction with accompanying drawing: as depicted in figs. 1 and 2, screen pipe hanger is by gland (1), central tube top connection (2), interior gland (3), deblocking shear pin (4), lock ring (5), central tube (6), slips (7), slips ring (8), sealing drum (9), anti-rotation shear pin (10), lower contact compositions such as (11), on central tube (6) exterior periphery saw-tooth thread is arranged, central tube (6) outside hugs the lock ring (5) of opening, on the inboard of lock ring (5) and the outside saw-tooth thread is arranged all, and the pitch of its outside screw and depth of threat are all greater than its inside thread, the inside thread of lock ring (5) is corresponding with the saw-tooth thread on the central tube (6), on the excircle of lock ring (5), be superimposed with interior gland (3), there is the corresponding screw thread of saw-tooth thread with lock ring (5) outside inboard of interior gland (3), and certain clearance is arranged between them, gland (1) is arranged in interior gland (3) outside, be connected by deblocking shear pin (4) between interior gland (3) and the gland (1).
According to aforesaid screen pipe hanger, its characteristics are that also the thread form and the form of thread on the central tube (6) of inside thread of lock ring (5) is inequality, and make it the two has certain clearance after cooperation.
The course of work of screen pipe hanger is: screen pipe hanger top is connected to supporting seat envelope releasing tool, seat envelope releasing tool (imports into by oil pipe with hydraulic test on ground) under the fluid pressure effect and produces axial force, this active force acts on the gland (1) and central tube (6) of screen pipe hanger, make the relative central tube (6) of gland (1) move downward, gland (1) promotes the relative together central tube (6) of lock ring (5) by gland (3) in deblocking shear pin (4) promotion downwards through the zigzag screw thread again and moves downward, and the cone on gland (1) tightly supports slips (7) on casing wall.Central tube this moment (6) moves upward relatively with respect to gland (1), interior gland (3), deblocking shear pin (5), slips (7), slips ring (8) again, by lower contact (11) the compression seal packing element (9) that is close on the central tube (6), make cartridge (9) be close to casing wall, isolate the annular space between screen pipe hanger and sleeve pipe.
When screen pipe hanger needs deblocking, being lowered to special-purpose deblocking worker with oil pipe inserts in gland (1) the upper trapezoid screw, carry oil pipe on the ground, because lock ring (5) saw-tooth thread hugs the auto-lock function of central tube (6), make lock ring (5), interior gland (3) central tube (6) relatively moves upward, when upper lifting force reaches deblocking shear pin (4) limiting shearing stress, deblocking shear pin (4) is cut off, central tube (6) is up relatively for gland (1), cone on the gland (1) is regained slips (7) when up, continue up after, cartridge (9) reclaims, and reaches the purpose of deblocking.
Claims (2)
1, a kind of screen pipe hanger, by gland (1), central tube top connection (2), interior gland (3), deblocking shear pin (4), lock ring (5), central tube (6), slips (7), slips ring (8), sealing drum (9), anti-rotation shear pin (10), lower contact compositions such as (11), it is characterized in that on central tube (6) exterior periphery saw-tooth thread being arranged, central tube (6) outside hugs the lock ring (5) of opening, all there is saw-tooth thread in the inboard and the outside of lock ring (5), and the pitch in its outside and depth of threat are all greater than inside thread, the inside thread of lock ring (5) is corresponding with the screw thread on the center visitor (6), on the excircle of lock ring (5), be superimposed with interior gland (3), there is the corresponding screw thread of saw-tooth thread with lock ring (5) outside inboard of interior gland (3), and certain interval is arranged between them, gland (1) is arranged in interior gland (3) outside, be connected by deblocking shear pin (4) between interior gland (3) and the gland (1).
2, screen pipe hanger according to claim 1 is characterized in that the thread form of lock ring (5) inside thread and the form of thread on the central tube (6) are inequality, makes the two that certain clearance be arranged after cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94215070 CN2203355Y (en) | 1994-06-24 | 1994-06-24 | Screen pipe hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94215070 CN2203355Y (en) | 1994-06-24 | 1994-06-24 | Screen pipe hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2203355Y true CN2203355Y (en) | 1995-07-12 |
Family
ID=33831168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94215070 Expired - Fee Related CN2203355Y (en) | 1994-06-24 | 1994-06-24 | Screen pipe hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2203355Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161982B (en) * | 2007-11-29 | 2010-08-11 | 中国石油天然气集团公司 | Hydraulic buckling type tail pipe hanger |
| CN103422831A (en) * | 2012-05-10 | 2013-12-04 | 韦特柯格雷公司 | Positive retention lock ring for tubing hanger |
| US10113383B2 (en) | 2012-05-10 | 2018-10-30 | Vetco Gray, LLC | Positive retention lock ring for tubing hanger |
-
1994
- 1994-06-24 CN CN 94215070 patent/CN2203355Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161982B (en) * | 2007-11-29 | 2010-08-11 | 中国石油天然气集团公司 | Hydraulic buckling type tail pipe hanger |
| CN103422831A (en) * | 2012-05-10 | 2013-12-04 | 韦特柯格雷公司 | Positive retention lock ring for tubing hanger |
| CN103422831B (en) * | 2012-05-10 | 2017-04-12 | 韦特柯格雷公司 | Positive retention lock ring for tubing hanger |
| US10113383B2 (en) | 2012-05-10 | 2018-10-30 | Vetco Gray, LLC | Positive retention lock ring for tubing hanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |