CN201443323U - Anti-spray anchoring machine of screw pump - Google Patents
Anti-spray anchoring machine of screw pump Download PDFInfo
- Publication number
- CN201443323U CN201443323U CN2009200161991U CN200920016199U CN201443323U CN 201443323 U CN201443323 U CN 201443323U CN 2009200161991 U CN2009200161991 U CN 2009200161991U CN 200920016199 U CN200920016199 U CN 200920016199U CN 201443323 U CN201443323 U CN 201443323U
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- CN
- China
- Prior art keywords
- slip
- spray
- screw pump
- anchoring
- anchoring machine
- 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 oil-gas downhole tools, particularly relates to an anti-spray anchoring machine of a screw pump, which comprises an upper joint (1), a stable nail (2), an upper prepared cap (3), an upper lock sleeve and a lower lock sleeve (5,16), a slip (10), a slip cover (12), a friction body (17) and a dead block (20). A forward direction ladder type thread and a reverse direction ladder type thread are arranged on an upper cone and an lower cone (7, 14), a liquid collecting channel is arranged on the lateral wall at the lower end of a central pipe (6), and a steel ball (4) is disposed between the central pipe (6) and the upper lock sleeve (5). The anti-spray anchoring machine of the screw pump sets the slip through revolving a torque, and has simple structure, easy slip setting, firm and steady anchoring, simple and convenient operation and low cost. Additionally, as an anti-resistance mechanism is arranged, the anti-spray anchoring machine does not set the slip when meeting resistance during work, simultaneously has anti-spray function and does not press down a pipe column. When ascending to a designed position to conduct anchoring, the anti-spray anchoring machine automatically opens the liquid collecting channel, and has a revolving slip releasing mode and a lifting slip releasing mode. Further, the slip is forced to reset, the slip releasing is completely reliable, and simultaneously the liquid collecting channel is closed.
Description
Technical field
The utility model belongs to the oil gas field downhole tool, particularly a kind of screw pump blowout prevention anchor.
Background technology
Produce the oil pipe wriggling in the past in screw pump or the oil well pump oil recovery process, disconnected easily taking off, connecting screw rod pump blowout prevention anchor can the grappling oil pipe under screw pump or oil well pump, avoiding tubing string to break takes off, 441,241 type anchors need be realized seat card, cost height, complicated operation by suppressing car in the past; 221 type anchors are realized the seat card by the pressure pipe post, increase tubing load, make drilling pipe bending.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned technical deficiency, and a kind of blowout prevention grappling requirement of satisfying screw pump is provided, avoid tubing string disconnected take off and rise, the screw pump blowout prevention anchor of blowout prevention in the lower tubular column oil pipe.
The technical scheme that the utility model technical solution problem adopts is: screw pump blowout prevention anchor comprises top connection, steady nail, upper prepared cap, lock tube, slips, slips cover, friction piece, dead stifled up and down, be characterized in that upper/lower cone is provided with the both forward and reverse directions acme thread, central tube lower end sidewall is provided with adopts the liquid passage, is provided with steel ball between central tube and the last lock tube.
The beneficial effects of the utility model are: screw pump blowout prevention anchor is by rotation torque seat card, and is simple in structure, and seat blocks easily, and grappling is firm, and is easy and simple to handle, with low cost.Be provided with the anti-mechanism that hinders, the not seat card that midway is hampered has the blowout prevention function simultaneously, does not press down tubing string.Instantly open automatically after the design attitude grappling and adopt the liquid passage, have two kinds of unfreezing modes, promptly rotate unfreezing and on propose unfreezing, the slips forced resetting, unfreezing is thoroughly reliable, closes simultaneously and adopts the liquid passage.
Description of drawings
Specify with embodiment below in conjunction with accompanying drawing.
Fig. 1 is a screw pump blowout prevention anchor structure chart.
Among the figure, the 1-top connection; 2-surely follows closely; The 3-upper prepared cap; The 4-steel ball; The last lock tube of 5-; The 6-central tube; The 7-upper cone; The 8-pin; 9-prevents switch block; The 10-slips; 11-slips spring; 12-slips cover; The 13-shear pin; The 14-lower cone; The 15-pin; Lock tube under the 16-; The 17-friction piece; 18-cushion rubber one; 19-cushion rubber two; 20-is extremely stifled;
The specific embodiment
Embodiment, with reference to accompanying drawing one, screw pump blowout prevention anchor is threaded with central tube 6 by top connection 1 and fixes with steady nail 2, upper prepared cap 3 is threaded with last lock tube 5, last lock tube 5 is fixing by shear pin 13 with central tube 6, steel ball 4 is installed in the lock tube 5, and it is spacing by upper cone 7 that top is supported by top connection 1 and central tube 6 in steel ball 4 bottoms.Last lock tube 5 is radially spacing in the groove of central tube 6 by anti-switch block 9 with following lock tube 16, and upper cone 7, slips 10, slips spring 11 are packed in the slips cover 12 successively.Upper cone 7 is connected with last lock tube 5 left-handed acme threads, be connected with slips cover 12 usefulness pins 8, lower cone 14 is connected with following lock tube 16 dextrorotation acme threads, be connected with slips cover 12 usefulness pins 15, friction piece 17 is threaded with slips cover 12, central tube 6 is threaded with dead stifled 20, with sealing ring 2 19 sealings, uses sealing ring one 18 sealings between central tube 6 and lower cone 14.
The screw pump blowout prevention anchor course of work: after top connection 1 connects pump arrival design attitude, about upper lifting pipe post 100mm, stopped 5-10 minute, and then turn clockwise about tubing string 10 circles, moment of torsion reaches 500Nm, the upper cone 7 that has left-handed acme thread is descending, and the lower cone 14 that has the dextrorotation acme thread is up, slips 10 is ejected on the well inwall of grappling.Lower cone 14 is up simultaneously, and the liquid passage of adopting of central tube 6 is opened, and has dual mode screw pump blowout prevention anchor can be pulled out in well when the cycle of finishing the work.The one, the reverse rotation tubing string, make the upper cone 7 that has left-handed acme thread up, the lower cone 14 that has the dextrorotation acme thread is descending, slips 10 is because the elastic force automatic drawing back of slips spring 11, because the instrument rotation torque is low, seat card distance makes that less than buckleing distance on the oil pipe instrument unfreezing is safe and reliable, when cone 14 is descending with central tube 6 adopt the liquid pathway closure, make instrument have the blowout prevention function; The 2nd, the upper lifting pipe post, when upper lifting force during greater than 70-100KN, shear pin 13 is cut off, it is up that central tube 6 articulates anti-switch block 9, upper prepared cap 3, upper cone 7 successively, last lock tube 5 separates with following lock tube 16, slips 10 is radially reclaimed remove grappling, central tube 6 will be adopted the liquid pathway closure in the time of up, make instrument have the blowout prevention function.On carry oil pipe, screw pump blowout prevention anchor is proposed outside the well.
Claims (1)
1. screw pump blowout prevention anchor, comprise top connection (1), steady nail (2), upper prepared cap (3), lock tube (5,16), slips (10), slips cover (12), friction piece (17), dead stifled (20) up and down, it is characterized in that upper/lower cone (7,14) is provided with the both forward and reverse directions acme thread, central tube (6) lower end sidewall is provided with adopts the liquid passage, is provided with steel ball (4) between central tube (6) and the last lock tube (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200161991U CN201443323U (en) | 2009-08-05 | 2009-08-05 | Anti-spray anchoring machine of screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200161991U CN201443323U (en) | 2009-08-05 | 2009-08-05 | Anti-spray anchoring machine of screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201443323U true CN201443323U (en) | 2010-04-28 |
Family
ID=42547999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200161991U Expired - Lifetime CN201443323U (en) | 2009-08-05 | 2009-08-05 | Anti-spray anchoring machine of screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201443323U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816332A (en) * | 2017-09-15 | 2018-03-20 | 中国石油天然气股份有限公司 | A kind of slip-type back-up sand eyelid retractor |
-
2009
- 2009-08-05 CN CN2009200161991U patent/CN201443323U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816332A (en) * | 2017-09-15 | 2018-03-20 | 中国石油天然气股份有限公司 | A kind of slip-type back-up sand eyelid retractor |
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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: 20100428 |
|
| CX01 | Expiry of patent term |