CN204646178U - Super elastic pit shaft switch - Google Patents
Super elastic pit shaft switch Download PDFInfo
- Publication number
- CN204646178U CN204646178U CN201520386111.0U CN201520386111U CN204646178U CN 204646178 U CN204646178 U CN 204646178U CN 201520386111 U CN201520386111 U CN 201520386111U CN 204646178 U CN204646178 U CN 204646178U
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- central tube
- urceolus
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- seat
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Abstract
A kind of super elastic pit shaft switch, mainly solves the problem of the valve sealing effectiveness difference of existing anchoring packer.It is characterized in that: under central tube (1) joint, be equipped with packing element group (3) successively, upper cone (5), anchor tooth (6), lower cone (9), anchor cylinder (8) is had outside lower cone (9) bottom, urceolus (10) is equipped with outside anchor cylinder (8) lower end lower cone (9), be equipped with to cut off between urceolus (10) lower end and central tube (1) and follow closely (12), between urceolus (10) and central tube (1), annular seal space lower end is equipped with piston (11), urceolus (10) wall sets liquid pass hole, ball-and-seat (2) contacts with sealing in central tube (1) upper end, ball-and-seat (2) sidewall there is inlet opening, push pipe (13) is connected in central tube (1) lower end, main spring (4) is placed between ball-and-seat (2) and push pipe (13).This super elastic pit shaft switch has the feature of good sealing effect.
Description
Technical field:
The utility model relates to a kind of oil extraction in oil field downhole tool used, especially super elastic pit shaft switch
Background technology:
In field of oil field oil extraction, for the oil well having blowing ability, after pump lost efficacy during lift pipe string inspection pump, after opening well head, well liquid can overflow ground, contaminated environment and be unfavorable for that shaft mouth operation operates.For this reason, on electric submersible pumping pit shaft, used an anchoring packer in the past, pit shaft more than perforated interval sealed, its central tube was arranged a valve, used a tapping pin at pump line post tail end, valve is disclosed open make well liquid up enter pump.After when examining pump upper lifting pipe post, tapping pin leaves valve, valve is closed, and stops well liquid up.And the valve of existing anchoring packer exists the problem of sealing effectiveness difference due to reasons in structure, be unfavorable for applying.
Utility model content:
In order to solve the problem of the valve sealing effectiveness difference of existing anchoring packer.The utility model provides a kind of super elastic pit shaft switch.This super elastic pit shaft switch has the feature of good sealing effect.
The technical solution of the utility model is: this super elastic pit shaft switch comprise central tube, ball-and-seat, packing element group, main spring, upper cone, anchor tooth, spring, anchor cylinder, lower cone, urceolus, piston, on cut off nail, push pipe, lower shear pin.Packing element group, upper cone, anchor tooth, lower cone is equipped with successively under central tube joint, anchor tooth there is spring, anchor cylinder is had outside lower cone bottom, urceolus is equipped with outside the lower cone of anchor cylinder lower end, be equipped with between urceolus lower end and central tube and cut off nail, between urceolus and central tube, annular seal space lower end is equipped with piston, the outer tube wall of corresponding piston sets liquid pass hole, ball-and-seat contacts with sealing in central tube upper end, ball-and-seat sidewall there is inlet opening, cut off nail under push pipe passes through to be connected in the pipe end of center, main spring is placed between ball-and-seat and push pipe.
The utility model has following beneficial effect: this super elastic pit shaft switch is equipped with packing element group successively under adopting central tube joint, upper cone, anchor tooth, lower cone, anchor tooth there is spring, anchor cylinder is had outside lower cone bottom, urceolus is equipped with outside the lower cone of anchor cylinder lower end, be equipped with between urceolus lower end and central tube and cut off nail, between urceolus and central tube, annular seal space lower end is equipped with piston, the outer tube wall of corresponding piston sets liquid pass hole, ball-and-seat contacts with sealing in central tube upper end, ball-and-seat sidewall there is inlet opening, cutting off nail under push pipe passes through is connected in the pipe end of center, main spring is placed in the structure between ball-and-seat and push pipe.Utilize main spring to improve ball-and-seat sealing effectiveness, and structure is simple.This super elastic pit shaft switch has the feature of good sealing effect thus.
Accompanying drawing illustrates:
Accompanying drawing 1 is the utility model structural representation.
1-central tube in figure, 2-ball-and-seat, 3-packing element group, 4-main spring, 5-upper cone, 6-anchor tooth, 7-spring, 8-anchor cylinder, 9-lower cone, 10-urceolus, 11-piston, 12-cuts off nail, 13-push pipe, shear pin under 14-.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Shown in accompanying drawing, this super elastic pit shaft switch comprise central tube 1, ball-and-seat 2, packing element group 3, main spring 4, upper cone 5, anchor tooth 6, spring 7, anchor cylinder 8, lower cone 9, urceolus 10, piston 11, on cut off nail 12, push pipe 13, lower shear pin 14.Packing element group 3 is equipped with successively under central tube 1 joint, upper cone 5, anchor tooth 6, lower cone 9, anchor tooth 6 there is spring 7, lower cone 9 has anchor cylinder 8 outside bottom, urceolus 10 is equipped with outside anchor cylinder 8 lower end lower cone 9, be equipped with between urceolus 10 lower end and central tube 1 and cut off nail 12, between urceolus 10 and central tube 1, annular seal space lower end is equipped with piston 11, urceolus 10 wall of corresponding piston 11 lower end sets liquid pass hole, ball-and-seat 2 contacts with sealing in central tube 1 upper end, ball-and-seat 2 sidewall there is inlet opening, cutting off nail 14 under push pipe 13 passes through is connected in central tube 1 lower end, main spring 4 is placed between ball-and-seat 2 and push pipe 13.
During actual use, back-off sub is connected above this super elastic pit shaft switch, before lower pump line post, first with delivery tubing string, this super elastic pit shaft switch is delivered to more than perforated interval, suppress after setting and giving up, namely this super elastic pit shaft switch is anchored on pit shaft by anchor tooth 6, is sealed by lantern ring space simultaneously.Trip out lower pumping pipe string after delivering tubing string.Termination one tapping pin under pumping pipe string, ball-and-seat 2 subdued by tapping pin, abdicates the fluid course be made up of inlet opening, well liquid can through the inlet opening of ball-and-seat up enter pump, realize oil pumping produce.When inspection pumps up pumping pipe string, up along with tapping pin, up under the effect of the main spring 4 of ball-and-seat under it, the inlet opening on ball-and-seat 2 is closed, well liquid can be stoped up, realize snubbing serving.
Claims (1)
1. a super elastic pit shaft switch, comprises central tube (1), ball-and-seat (2), packing element group (3), main spring (4), upper cone (5), anchor tooth (6), spring (7), anchor cylinder (8), lower cone (9), urceolus (10), piston (11), on cut off nail (12), push pipe (13), lower shear pin (14), is characterized in that: be equipped with packing element group (3) under central tube (1) joint successively, upper cone (5), anchor tooth (6), lower cone (9), anchor tooth (6) there is spring (7), anchor cylinder (8) is had outside lower cone (9) bottom, urceolus (10) is equipped with outside anchor cylinder (8) lower end lower cone (9), be equipped with to cut off between urceolus (10) lower end and central tube (1) and follow closely (12), between urceolus (10) and central tube (1), annular seal space lower end is equipped with piston (11), urceolus (10) wall of corresponding piston (11) lower end sets liquid pass hole, ball-and-seat (2) contacts with sealing in central tube (1) upper end, ball-and-seat (2) sidewall there is inlet opening, cutting off nail (14) under push pipe (13) passes through is connected in central tube (1) lower end, main spring (4) is placed between ball-and-seat (2) and push pipe (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520386111.0U CN204646178U (en) | 2015-06-01 | 2015-06-01 | Super elastic pit shaft switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520386111.0U CN204646178U (en) | 2015-06-01 | 2015-06-01 | Super elastic pit shaft switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204646178U true CN204646178U (en) | 2015-09-16 |
Family
ID=54098942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520386111.0U Active CN204646178U (en) | 2015-06-01 | 2015-06-01 | Super elastic pit shaft switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204646178U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345140A (en) * | 2023-12-05 | 2024-01-05 | 大庆金祥寓科技有限公司 | Supporting anchor device for jetting and decoupling same-hole secondary perforation |
-
2015
- 2015-06-01 CN CN201520386111.0U patent/CN204646178U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345140A (en) * | 2023-12-05 | 2024-01-05 | 大庆金祥寓科技有限公司 | Supporting anchor device for jetting and decoupling same-hole secondary perforation |
| CN117345140B (en) * | 2023-12-05 | 2024-02-27 | 大庆金祥寓科技有限公司 | Supporting anchor device for jetting and decoupling same-hole secondary perforation |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |