CN202325382U - Blowout prevention tool assembly for underground operation - Google Patents
Blowout prevention tool assembly for underground operation Download PDFInfo
- Publication number
- CN202325382U CN202325382U CN2011204893500U CN201120489350U CN202325382U CN 202325382 U CN202325382 U CN 202325382U CN 2011204893500 U CN2011204893500 U CN 2011204893500U CN 201120489350 U CN201120489350 U CN 201120489350U CN 202325382 U CN202325382 U CN 202325382U
- Authority
- CN
- China
- Prior art keywords
- leading screw
- top connection
- screw
- cone
- blowout prevention
- 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 - Lifetime
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Abstract
The utility model belongs to an underground tool of an oil and gas field and in particular relates to a blowout prevention tool assembly for underground operation. An upper joint (1) is in threaded connection with a tension rod (7); a jacket (2) is in threaded connection with an upper screw (9); the upper screw (9) and a lower joint (24) are fixed by an unsetting shear pin (20); a clamping block (3) is arranged in a key sleeve (5), the lower part of the clamping block (3) is supported by the upper joint (1) and the key sleeve (5), and the upper part of the clamping block (3) is limited by a pressing sleeve (6); the upper screw (9) and a lower screw (16) are limited in the radial direction in a groove of the upper joint (1) through a key block (4); an upper cone (10) is connected with the upper screw (9) through leftward-rotation trapezoidal threads; a lower cone (15) is connected with the lower screw (16) through rightward-rotation trapezoidal threads; the upper end of the tension rod (7) is in threaded connection with the upper joint (1), and the lower end of the tension rod (7) is in threaded connection with the lower joint (24) through a tension stick (25). The blowout prevention tool assembly is simple and effective in setting, firm in anchoring, and safe and reliable in unclamping, and a slip is forcedly reset during unclamping.
Description
Technical field
The utility model belongs to the oil gas field downhole tool, particularly a kind of underground work blowout prevention instrument assembly.
Background technology
After work measure such as oil field compression fracture, short covering, during lift pipe string, there is pressure in the shaft bottom; Liquid will spray well head in the well, not only pollutes the well site, and when the spray gesture is very big, also hurts sb.'s feelings easily; Behind pressing crack construction, common first blowout prevention could play lift pipe string then; So not only job execution is constant, and the loss stratum energy, in the oil recovery process in later stage, will influence fuel-displaced effect.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned technical deficiency, and the underground work blowout prevention instrument assembly of a kind of blowout prevention, environmental protection, assurance oil recovery is provided.
The technical scheme that the utility model technical solution problem adopts is: underground work blowout prevention instrument assembly comprises top connection, separates big envelope, upper cone, back of the body cap, slips cover, slips, slips spring, lower cone, snap one, snap seat, sealing shroud, deblocking shear pin, snap two, packing element, lower back cap, lower contact; Be characterized in the top connection stayed mast that is threaded; Sheath is threaded and goes up leading screw; Fix with the deblocking shear pin between last leading screw and the lower contact, fixture block is installed in the key cover, and the fixture block bottom is supported by top connection and key cover; Top is spacing by gland; Last leading screw is radially spacing in the groove of top connection by the key piece with following leading screw, and upper cone is connected with the left-handed trapezoidal thread of last leading screw, and lower cone is connected with following leading screw dextrorotation trapezoidal thread; Stayed mast upper end is threaded with top connection, being threaded through chest-developing bar between stayed mast lower end and the lower contact.
The beneficial effect of the utility model is: underground work blowout prevention instrument assembly is sat card through both forward and reverse directions trapezoidal thread transfer torque mode, make set simple effectively, grappling is firm, slips forced resetting during unfreezing; Unfreezing is safe and reliable; Have the anti-resistance of fixture block mechanism, instrument shear pin before not sitting card is not stressed, have the key piece; The ability transfer torque makes slips can sit card.
Description of drawings
Specify with embodiment below in conjunction with accompanying drawing.
Fig. 1 is a underground work blowout prevention instrument assembly structure sectional view.
Among the figure, the 1-top connection; The 2-sheath; The 3-fixture block; 4-key piece; 5-key cover; The 6-gland; The 7-stayed mast; 8-separates big envelope; The last leading screw of 9-; The 10-upper cone; 11-carries on the back cap; 12-slips cover; The 13-slips; 14-slips spring; The 15-lower cone; Leading screw under the 16-; 17-snap one; 18-snap seat; The 19-sealing shroud; 20-deblocking shear pin; 21-snap two; The 22-packing element; 23-lower back cap; The 24-lower contact; The 25-chest-developing bar.
The specific embodiment
Embodiment, with reference to accompanying drawing 1, the top connection 1 of the underground work blowout prevention instrument assembly stayed mast 7 that is threaded; Last leading screw 9 sheath 2 that is threaded; Fixing with deblocking shear pin 20 between last leading screw 9 and the lower contact 24, it is fixing with lower contact 24 to separate big envelope 8 usefulness deblocking shear pins 20, and fixture block 3 is installed in the key cover 5; Fixture block 3 bottoms are supported by top connection 1 and key cover 5, and top is spacing by gland 6.Last leading screw 9 is radially spacing in the groove of top connection 1 by key piece 4 with following leading screw 16, locks with snap 1 between following leading screw 16 and the snap seat 18, and upper cone 10, slips 13, slips spring 14 are packed in the slips cover 12 successively, and fixes with carrying on the back cap 11.Upper cone 10 is connected with last leading screw 9 left-handed trapezoidal threads; Be connected by pin with slips cover 12; Lower cone 15 is connected with following leading screw 16 dextrorotation trapezoidal threads, is connected by pin with slips cover 12, is threaded through chest-developing bar 25 between stayed mast 7 lower ends and the lower contact 24; In lower contact 24 and separate and establish sealing shroud 19 and snap 2 21 between the big envelope 8, fix at lower contact 24 peripheral hardware packing elements 22 and with lower back cap 23.
The underground work blowout prevention instrument assembly course of work is: top connection 1 about upper lifting pipe post 100mm, stopped 5 ~ 10 minutes after connecting pump arrival design attitude; And then turn clockwise about tubing string 10 circles; The lower cone 15 that following leading screw 16 dextrorotation trapezoidal threads connect is up, slips 13 is ejected be anchored on the well inwall upper lifting pipe post; Stayed mast 7 passes to lower contact 24 drive packing elements 22 with upper lifting force through chest-developing bar 25 and sets; And the state that will set is locked in down on the leading screw 16 through snap 1, snap 2 21, snap seat 18, finally passes on the slips 13.When the cycle of finishing the work, following special-purpose fishing tool is pulled following operation blowout prevention instrument assembly out in well, and fishing tool drags for when separating big envelope 8; The upper lifting pipe post, when upper lifting force during greater than 70 ~ 100KN, deblocking shear pin 20 is cut off; Separate that big envelope 8 articulates key piece 4 successively, goes up leading screw 9, back of the body cap 11, upper cone 10 be up, last leading screw 9 lower ends open the lobe thread failure, last leading screw 9 separates with following leading screw 16; Slips 13 is radially reclaimed remove grappling, sealing shroud 19 will be crossed the liquid passage in the time of up and open, and make pressure balance on the instrument; On carry oil pipe, screw pump blowout prevention anchor is proposed outside the well.
Claims (1)
1. underground work blowout prevention instrument assembly; Comprise top connection (1), separate big envelope (8), upper cone (10), back of the body cap (11), slips cover (12), slips (13), slips spring (14), lower cone (15), snap one (17), snap seat (18), sealing shroud (19), deblocking shear pin (20), snap two (21), packing element (22), lower back cap (23), lower contact (24); It is characterized in that top connection (1) stayed mast (7) that is threaded; Sheath (2) is threaded and goes up leading screw (9); Fixing between last leading screw (9) and the lower contact (24) with deblocking shear pin (20); Fixture block (3) is installed in the key cover (5); Fixture block (3) bottom is supported by top connection (1) and key cover (5), and top is spacing by gland (6), and last leading screw (9) is radially spacing in the groove of top connection (1) by key piece (4) with following leading screw (16); Upper cone (10) is connected with the left-handed trapezoidal thread of last leading screw (9); Lower cone (15) is connected with following leading screw (16) dextrorotation trapezoidal thread, and stayed mast (7) upper end is threaded with top connection (1), being threaded through chest-developing bar (25) between stayed mast (7) lower end and the lower contact (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204893500U CN202325382U (en) | 2011-12-01 | 2011-12-01 | Blowout prevention tool assembly for underground operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204893500U CN202325382U (en) | 2011-12-01 | 2011-12-01 | Blowout prevention tool assembly for underground operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202325382U true CN202325382U (en) | 2012-07-11 |
Family
ID=46437364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204893500U Expired - Lifetime CN202325382U (en) | 2011-12-01 | 2011-12-01 | Blowout prevention tool assembly for underground operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202325382U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115263229A (en) * | 2022-09-19 | 2022-11-01 | 山东普瑞思德石油技术有限公司 | Back-insertable sealing packer and using method thereof |
-
2011
- 2011-12-01 CN CN2011204893500U patent/CN202325382U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115263229A (en) * | 2022-09-19 | 2022-11-01 | 山东普瑞思德石油技术有限公司 | Back-insertable sealing packer and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |