CN202990953U - Screw pump blowout prevention mechanical anchor - Google Patents
Screw pump blowout prevention mechanical anchor Download PDFInfo
- Publication number
- CN202990953U CN202990953U CN 201320010794 CN201320010794U CN202990953U CN 202990953 U CN202990953 U CN 202990953U CN 201320010794 CN201320010794 CN 201320010794 CN 201320010794 U CN201320010794 U CN 201320010794U CN 202990953 U CN202990953 U CN 202990953U
- Authority
- CN
- China
- Prior art keywords
- central tube
- sliding sleeve
- slips
- pipe
- screw pump
- 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
Links
- 230000002265 prevention Effects 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
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Abstract
The utility model discloses a screw pump prevents spouting mechanical anchor has solved the problem that screw pump well tripping pipe post does not have effective interior blowout prevention instrument and kill-job contaminated stratum. The movable plug is fixed in an upper opening of the central pipe through a shearing pin, and an upper connector is in interference fit with the outside of the upper opening; a sealing sliding sleeve is in sliding fit outside the central tube, a return spring is arranged between the sealing sliding sleeve and the upper joint, and the sealing sliding sleeve can block a liquid inlet hole of the central tube; the slips assembly and the centering assembly are sequentially fixed on the central pipe at the lower part of the sealing sliding sleeve, the lower end of the centering body is provided with a sliding nail, the back cap is sleeved outside the sliding nail and is fixed at the lower end of the centering body through a pin, and the lower end of the central pipe is in threaded connection with a variable wire. The mechanical anchor can respectively block the space in the oil pipe in the process of tripping the pipe string, and the purpose that the space in the oil pipe is sealed without killing well operation when the pipe string is tripped up is achieved. Meanwhile, the environmental pollution is prevented, the construction period is shortened, and the operation cost is reduced.
Description
Technical field
The utility model relates to the oil extraction in oil field field, and a kind of interior jet-preventing tool used during Downhole Construction is used for various screw pumps and needs the interior blowout prevention of anchoring string.
Background technology
At present the interior jet-preventing tool in the screw bolt well job execution can not guarantee the secondary operation sealing, need trip out full well casing post with mud lubrication, so not only the job execution cycle long, cost is high, also can cause to the stratum the multiple unfavorable factors such as severe contamination.
Summary of the invention
The purpose of this utility model is to provide a kind of screw pump blowout prevention machinery anchor.This instrument can solve the secondary operation tubing string and pollute the problem on stratum without effectively interior jet-preventing tool and kill-job.
For achieving the above object, the technical solution adopted in the utility model is: screw pump blowout prevention machinery anchor, comprise central tube, the suitable for reading interior of central tube fixes by cutting off pin live stifled, outer interference fit top connection suitable for reading, and top connection is threaded in the below of screw pump; The central tube sealing sliding sleeve that is slidably matched outward arranges return spring between sealing sliding sleeve and top connection, sealed sliding cover shutoff central tube inlet opening when return spring is in reset mode; Stationary slip assembly and righting assembly successively on the central tube of sealing sliding sleeve bottom, described slips assembly comprises cone, slips, slips spring and slips cover; Described righting assembly comprises centralizer body, wiper block, centralizer body spring and ring set, and the upper end of centralizer body is fixed by pin and slips cover, the lower end of centralizer body arranges sliding nail, carry on the back cap sleeve outside sliding nail, and be fixed by a pin to the lower end of centralizer body, the lower end of central tube is threaded and becomes silk.
Beneficial effect: screw pump blowout prevention of the present utility model machinery anchor, can distinguish space in the shutoff oil pipe in removing pump line post process, reach screw bolt well and played blowout prevention in the lower tubular column job execution and the effect of minimizing oil layer pollution; Prevent simultaneously environment pollution, shortened construction period, reduced operating cost.
Description of drawings
Fig. 1 is the structural representation of the utility model screw pump blowout prevention machinery anchor.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
By shown in Figure 1: screw pump blowout prevention machinery anchor, comprise central tube 4, in central tube 4 suitable for reading, by cutting off fixing stifled 2, the outer interference fit top connection 1 suitable for reading of living of pin, top connection 1 is threaded in the below of screw pump; The outer sealing sliding sleeve 5 that is slidably matched of central tube 4 arranges return spring 3 between sealing sliding sleeve 5 and top connection 1, sealing sliding sleeve 5 shutoff central tube inlet openings 41 when return spring 3 is in reset mode; Stationary slip assembly and righting assembly successively on the central tube 4 of sealing sliding sleeve 5 bottoms, described slips assembly comprises cone 6, slips 7, slips spring 8 and slips cover 9; Described righting assembly, comprise centralizer body 10, wiper block 11, centralizer body spring 12 and ring set 13, above-mentioned slips assembly and righting assembly can adopt the slips assembly of this area routine and righting assembly to get final product, the upper end of centralizer body 10 is fixing by pin and slips cover 9, the lower end of centralizer body 10 arranges sliding nail 15, back of the body cap 14 is enclosed within outside sliding nail 15, and is fixed by a pin to the lower end of centralizer body 10, and the lower end of central tube 4 is threaded and becomes silk 16.
During normal lower tubular column, the work stifled 2 of screw pump blowout prevention machinery anchor inside and sealing sliding sleeve 5 block the passage of central tube 4 in pairs, and down-hole liquid can't enter in central tube 4, reaches lower pump without the purpose of kill job.
Under screw pump, behind the precalculated position, the put-on and delegated tubing string is sat card, is opened although sit the inlet opening 41 of card rear center pipe 4, and liquid advances less than more than pump, stifled 2 sealing because live, and then lower rotor part and sucker rod; Until rotor during down to the above 1-2 rice of pump barrel, use cementing truck to suppress 8-10MPa in the oil pipe pin cut off, living stifled 2 discharges, and opens central passage, liquid through between the slips teeth space, cone and central tube inlet opening flow in oil pipe, realizes production status.
During the secondary operation lift pipe string, the unfreezing of upper lifting pipe post, slips is descending along central tube slideway track, seals sliding sleeve and cone thereupon and resets under the effect of spring, inlet opening is blocked space sealing and without the purpose of kill job in oil pipe when reaching lift pipe string.
Claims (1)
1. screw pump blowout prevention machinery anchor, comprise central tube, and the suitable for reading interior of central tube fixes by cutting off pin live stifled, outer interference fit top connection suitable for reading, and top connection is threaded in the below of screw pump; It is characterized in that: the described central tube sealing sliding sleeve that is slidably matched outward arranges return spring between sealing sliding sleeve and top connection, sealed sliding cover shutoff central tube inlet opening when return spring is in reset mode; Stationary slip assembly and righting assembly successively on the central tube of sealing sliding sleeve bottom, described slips assembly comprises cone, slips, slips spring and slips cover; Described righting assembly comprises centralizer body, wiper block, centralizer body spring and ring set, and the upper end of centralizer body is fixed by pin and slips cover, the lower end of centralizer body arranges sliding nail, carry on the back cap sleeve outside sliding nail, and be fixed by a pin to the lower end of centralizer body, the lower end of central tube is threaded and becomes silk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320010794 CN202990953U (en) | 2013-01-09 | 2013-01-09 | Screw pump blowout prevention mechanical anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320010794 CN202990953U (en) | 2013-01-09 | 2013-01-09 | Screw pump blowout prevention mechanical anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202990953U true CN202990953U (en) | 2013-06-12 |
Family
ID=48562144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320010794 Expired - Fee Related CN202990953U (en) | 2013-01-09 | 2013-01-09 | Screw pump blowout prevention mechanical anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202990953U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134121A (en) * | 2015-08-21 | 2015-12-09 | 梁伟成 | Screw pump blowout prevention supporting slips anchoring tool |
| CN110566140A (en) * | 2019-09-18 | 2019-12-13 | 祁战宝 | supporting slip for oil well screw pump oil production well in oil field |
| CN110836103A (en) * | 2019-11-13 | 2020-02-25 | 辽宁新华仪器有限公司 | Lifting type spray-proof anchor |
| CN111608598A (en) * | 2020-06-30 | 2020-09-01 | 中国石油天然气股份有限公司 | Cable-passing oil pipe rigid centering device |
-
2013
- 2013-01-09 CN CN 201320010794 patent/CN202990953U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134121A (en) * | 2015-08-21 | 2015-12-09 | 梁伟成 | Screw pump blowout prevention supporting slips anchoring tool |
| CN110566140A (en) * | 2019-09-18 | 2019-12-13 | 祁战宝 | supporting slip for oil well screw pump oil production well in oil field |
| CN110566140B (en) * | 2019-09-18 | 2020-11-24 | 祁战宝 | Supporting slip for oil well screw pump oil production well in oil field |
| CN110836103A (en) * | 2019-11-13 | 2020-02-25 | 辽宁新华仪器有限公司 | Lifting type spray-proof anchor |
| CN111608598A (en) * | 2020-06-30 | 2020-09-01 | 中国石油天然气股份有限公司 | Cable-passing oil pipe rigid centering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20190109 |