CN205025438U - Oil pipe drags for barrel oil pump - Google Patents
Oil pipe drags for barrel oil pump Download PDFInfo
- Publication number
- CN205025438U CN205025438U CN201520641483.3U CN201520641483U CN205025438U CN 205025438 U CN205025438 U CN 205025438U CN 201520641483 U CN201520641483 U CN 201520641483U CN 205025438 U CN205025438 U CN 205025438U
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- CN
- China
- Prior art keywords
- swab
- oil pipe
- counterweight
- liquid inlet
- assembly
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- Expired - Fee Related
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Abstract
The utility model discloses an oil pipe drags for barrel oil pump, the counter weight assembly, feed liquor assembly, sealing assembly and the play liquid assembly that connect gradually including from the bottom up. An oil pipe drags for barrel oil pump comprises counter weight assembly, feed liquor assembly, four big parts of sealing assembly and play liquid assembly, threaded connection between each parts, and the screw specification is unified, improves swab interchangeability, reduces swab maintenance and input cost. The swab adopts the primary cup, and the delivery valve adopts ball valve, the whole metal that adopts of swab. At first improve the swab wearability, increase swab life. Design counter weight pipe makes swab dependence self gravity immerse well liquid, has avoided the weighted lever use, has reduced weighted lever operation and input cost. Adopt the ball valve to prevent the well liquid refluence of swab upper end, owing to the ball valve uses on the oil -well pump, excellent in use effect, the reliability is high, and standardized, and consequently low cost draws forth the swab with the ball valve. Simple structure, easily installation, convenient to use.
Description
Technical field
The utility model belongs to oil-bailing in oilfield equipment technical field, relates to a kind of oil pipe skimming swab.
Background technology
Develop the oil well of middle and later periods, stratum energy is not enough and the decline of bottom pressure, and produced quantity is no more than the oil well that oil reservoir reserves 25% ~ 30% have been discarded, and adopts conventional sucker rod pump production practice not have profit.Output benefit is greater than for oil pumping cost, employing drag for oily technique oil pumping economic effect comparatively obvious, dragging for oily technique is divided into bailing oil in case and oil pipe to drag for oil, bailing oil in case is by dragging for the long-pending restriction of oily cylindrical shell, drag for oil mass limited, and bailing oil in case can only in straight well use, adopt bailing oil in case in directional well, oil cylinder easily topples, and more reduces and drags for oil mass.Oil pipe drags for oil and solves bailing oil in case and encounter problems, but oil pipe skimming swab has the following disadvantages: (1) oil pipe skimming swab and tubing seal, and frictional force is large, adds polished rod load, increases wirerope diameter.(2) oil pipe drags for oil, normal employing packing element swab on market, but glue bucket swab wax deposition friction in down stroke in wax deposition fouling well is large, when the too small meeting of packing element external diameter causes poorly sealed, oily effect is dragged in impact, increases packing element external diameter and easily causes again that swab is descending to be hampered.(3) during conventional packing element swab bailing work, by expanded radially realization and the tubing seal of packing element rubber, but when adopting packing element sealing, be worn once sealing surface worn out, cause whole swab to lose efficacy, scene is applied its application life and is no more than three months, because whole cartridge and swab are integrated, therefore conventional packing element swab interchangeablity is low, therefore causes equipment investment to increase.(4) conventional swab own wt is little, and self gravitation can not be relied on to sink in working fluid, must, at swab upper end design weighted lever, rely on weighted lever to sink in working fluid.
Utility model content
The purpose of this utility model there are provided a kind of oil pipe skimming swab, solve the existing swab life-span short, damage without repair ability, going into the well to increase the problem of weighted lever.
The technical scheme that the utility model adopts is, a kind of oil pipe skimming swab, comprises the counterweight assembly, liquid inlet assemblage, seal assembly and the liquid outlet assemblage that connect successively from top to bottom.
Feature of the present utility model is also,
Counterweight assembly comprises counterweight tube guide head, and counterweight tube guide head is connected with counterweight tube;
Liquid inlet assemblage comprises liquid inlet joint, and liquid inlet joint is connected with reducer union;
Seal assembly comprises central tube, and central tube is disposed with backing plate, pressure ring, sealing cup, clamp nut and locking nut from top to bottom;
Liquid outlet assemblage comprises cap and fluid valve bonnet, is connected with pressure cap in fluid valve bonnet, pressure cap is disposed with valve seat, valve ball, stopper and block;
Counterweight tube is connected with liquid inlet joint, and reducer union is connected with central tube, and central tube is connected with fluid valve bonnet, and fluid valve bonnet is connected with upper cap.
Counterweight tube guide head and counterweight tube are threaded connection, and counterweight tube and liquid inlet joint are threaded connection, and reducer union and central tube are threaded connection, and central tube and fluid valve bonnet are threaded connection, and upper cap and fluid valve bonnet are threaded connection.
Sealing cup adopts sandwich construction, and the material of sealing cup adopts polytetrafluoroethylene (PTFE).
Sealing cup is V-shaped.
Stopper is trapezoidal column structure.
Fluid valve bonnet is evenly arranged 4 holes, liquid inlet joint is evenly arranged 4 holes.
The beneficial effects of the utility model are:
1. be made up of the large parts of counterweight assembly, liquid inlet assemblage, seal assembly and liquid outlet assemblage four, be threaded between each parts, screw thread uniform specification, improves swab interchangeability, reduces swab maintenance and input cost.
2. swab adopts cup packing, and delivery valve adopts conventional ball valve, and swab entirety adopts metal.First improve swab abrasion resistance, increase swab application life.
3. design counterweight tube, make swab rely on self gravitation to sink working fluid, avoid weighted lever and use, decrease weighted lever operation and input cost.
4. adopt ball valve to prevent swab upper end well liquid from flowing backwards, because ball valve uses on oil well pump, result of use is good, and reliability is high, and standardization, with low cost, therefore ball valve is drawn swab.
5. structure is simple, is easy to install, easy to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of oil pipe skimming swab of the utility model;
Fig. 2 is A-A sectional view in Fig. 1;
Fig. 3 is B-B sectional view in Fig. 1.
In figure, 1. counterweight tube guide head, 2. counterweight tube, 3. swab liquid inlet joint, 4. reducer union, 5. central tube, 6. backing plate, 7. pressure ring, 8. sealing cup, 9. clamp nut, 10. locking nut, 11. pressure caps, 12. fluid valve bonnets, 13. valve seats, 14. valve balls, 15. stoppers, 16. blocks, cap on 17..
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
The utility model provides a kind of oil pipe skimming swab, as shown in Figure 1, comprises the counterweight assembly, liquid inlet assemblage, seal assembly and the liquid outlet assemblage that connect successively from top to bottom.
Counterweight assembly comprises counterweight tube guide head 1, and counterweight tube guide head 1 is connected with counterweight tube 2;
Liquid inlet assemblage comprises liquid inlet joint 3, and liquid inlet joint 3 is connected with reducer union 4;
Seal assembly comprises central tube 5, central tube 5 is disposed with from top to bottom backing plate 6, pressure ring 7, sealing cup 8, clamp nut 9 and locking nut 10;
Liquid outlet assemblage comprises cap 17 and fluid valve bonnet 12, is connected with pressure cap 11 in fluid valve bonnet 12, pressure cap 11 is disposed with valve seat 13, valve ball 14, stopper 15 and block 16.
Counterweight tube 2 is connected with liquid inlet joint 3, and reducer union 4 is connected with central tube 5, and central tube 5 is connected with fluid valve bonnet 12, and fluid valve bonnet 12 is connected with upper cap 17.
Counterweight tube guide head 1 and counterweight tube 2 are threaded connection, counterweight tube 2 and liquid inlet joint 3 are threaded connection, reducer union 4 and central tube 5 are threaded connection, and central tube 5 and fluid valve bonnet 12 are threaded connection, and upper cap 17 is threaded connection with fluid valve bonnet 12.
Sealing cup 8 adopts sandwich construction, prevent one deck worn out or upset after, seal failure, swab is caused to reduce application life, multi-layer sealed leather cup ensures that other sealants can play seal receptacle effect equally after the upset of one deck leather cup mill, sealing cup 8 is directly enclosed within central tube 5 simultaneously, is easy to change, and can not lose efficacy cause whole swab to be changed because of leather cup.The combination properties such as the material of sealing cup 8 adopts polytetrafluoroethylene (PTFE), and polytetrafluoroethylene (PTFE) has wear-resisting, corrosion-resistant, self-lubricating, and mill resistance is low, extend swab application life.
Counterweight tube 2 adopts conventional cold drawing steel tube and to carry out filling plumbous, counterweight tube 2 length and fill with plumbous length and design according to submergence requirement.I.e. down-hole swab weight > pump intake pressure+swab and oil pipe frictional force.Counterweight tube 2 can standardized production, by submergence segmentation, produces counterweight tube 2, ensure that counterweight tube 2 weight can make swab sink to and need submergence according to every section of most degree of depth.
Counterweight guide head 1 has guide effect when swab is descending, and has plugging action to the plumbous liquid pouring into counterweight tube 2; Fill with plumbous counterweight tube 2 descending time, due to swab, to fill with plumbous quality large, and descending impulse force is large, has cleaning effect to the wax tied in oil pipe and dirt.
Clamp nut 9 is screwed with locking nut 10, ensures that pressure ring 7 does not move with sealing cup 8 relative centre pipe 5 is fixing;
Central tube 5 was liquid passage.When swab in tubing string descending encounter liquid level time, well liquid enters swab inside by swab liquid inlet joint 3;
Sealing cup 8 is V-shaped, due to V-structure feature, during down stroke, V-seal leather cup 8 has the trend that radial direction tightens, be convenient to descending, during up stroke, V-seal leather cup expands under the effect of upper liquid pressure, compress with tubing wall, ensure that lifting liquid is not missed, the liquid above plunger is given rise to surface line;
Stopper 15 is trapezoidal column structure, and for fixing wire rope, wire rope, by the trapezoidal cylinder small end in stopper 15 top, in the knotting of stopper inside, and is led with anticorrosion U-shaped card card and fills with plumbous, preventing wire rope from deviating from from stopper 15.
As shown in Figure 2, fluid valve bonnet 12 is evenly arranged 4 holes.
As shown in Figure 3, liquid inlet joint 3 is evenly arranged 4 holes, liquid inlet joint 3 evenly has 4 holes at circumferencial direction, and the hole gross area is similar to oil pipe sectional area size, makes well liquid can enter swab smoothly.
The operating principle of a kind of oil pipe skimming swab of the utility model is: during down stroke, swab is descending in oil pipe under the effect of wire rope weight, weighted lever weight, swab deadweight, now, sealing cup 8 is not subject to oil jacket ring pressure, is in unswollen state, and between oil pipe, frictional force is very little, when entering designated depth under liquid level under swab, fluid enters swab central tube 5 from the hole of liquid inlet joint 3, and backs down valve ball 14, enters oil pipe above swab inner.During up stroke, when the upper and lower oil pressure of swab is equal, valve ball 14 is closed, and sealing cup 8, by compression swelling, is adjacent to tube inner wall, prevents fluid leakage in oil pipe above swab.Now, control system controls motor reversal, drives swab up, until pithead position, completes an oil salvage operation.
A kind of oil pipe skimming swab of the present utility model is made up of the large parts of counterweight assembly, liquid inlet assemblage, seal assembly and liquid outlet assemblage four, is threaded between each parts, and screw thread uniform specification, improves swab interchangeability, reduces swab maintenance and input cost.Swab adopts sealing cup 8, and delivery valve adopts ball valve 14, and swab entirety adopts metal.First improve swab abrasion resistance, increase swab application life.Design counterweight tube 2, makes swab rely on self gravitation to sink working fluid, avoids weighted lever and use, decrease weighted lever operation and input cost.Adopt ball valve 14 to prevent swab upper end well liquid from flowing backwards, because ball valve 14 uses on oil well pump, result of use is good, and reliability is high, and standardization, with low cost, therefore ball valve is drawn swab.Structure is simple, is easy to install, easy to use.
Claims (6)
1. an oil pipe skimming swab, is characterized in that: comprise the counterweight assembly, liquid inlet assemblage, seal assembly and the liquid outlet assemblage that connect successively from top to bottom;
Described counterweight assembly comprises counterweight tube guide head (1), and counterweight tube guide head (1) is connected with counterweight tube (2);
Described liquid inlet assemblage comprises liquid inlet joint (3), and liquid inlet joint (3) is connected with reducer union (4);
Described seal assembly comprises central tube (5), central tube (5) is disposed with from top to bottom backing plate (6), pressure ring (7), sealing cup (8), clamp nut (9) and locking nut (10);
Described liquid outlet assemblage comprises cap (17) and fluid valve bonnet (12), be connected with pressure cap (11) in fluid valve bonnet (12), pressure cap (11) be disposed with valve seat (13), valve ball (14), stopper (15) and block (16);
Counterweight tube (2) is connected with liquid inlet joint (3), reducer union (4) is connected with central tube (5), central tube (5) is connected with fluid valve bonnet (12), and fluid valve bonnet (12) is connected with upper cap (17).
2. a kind of oil pipe skimming swab according to claim 1, it is characterized in that: described counterweight tube guide head (1) and counterweight tube (2) are threaded connection, counterweight tube (2) and liquid inlet joint (3) are threaded connection, reducer union (4) and central tube (5) are threaded connection, central tube (5) and fluid valve bonnet (12) are threaded connection, and upper cap (17) and fluid valve bonnet (12) are threaded connection.
3. a kind of oil pipe skimming swab according to claim 1, is characterized in that: described sealing cup (8) adopts sandwich construction, and the material of sealing cup (8) adopts polytetrafluoroethylene (PTFE).
4. a kind of oil pipe skimming swab according to claim 1, is characterized in that: described sealing cup (8) is V-shaped.
5. a kind of oil pipe skimming swab according to claim 1, is characterized in that: described stopper (15) is trapezoidal column structure.
6. a kind of oil pipe skimming swab according to any one of claim 1-5, is characterized in that: described fluid valve bonnet (12) evenly arranges 4 holes, liquid inlet joint (3) is evenly arranged 4 holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520641483.3U CN205025438U (en) | 2015-08-21 | 2015-08-21 | Oil pipe drags for barrel oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520641483.3U CN205025438U (en) | 2015-08-21 | 2015-08-21 | Oil pipe drags for barrel oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205025438U true CN205025438U (en) | 2016-02-10 |
Family
ID=55257981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520641483.3U Expired - Fee Related CN205025438U (en) | 2015-08-21 | 2015-08-21 | Oil pipe drags for barrel oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205025438U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294144A (en) * | 2021-02-19 | 2021-08-24 | 中国石油天然气股份有限公司 | Method and device for monitoring oil bailing swab |
| CN115306369A (en) * | 2022-08-25 | 2022-11-08 | 山西省煤炭地质勘查研究院 | Structure and mining process of coal bed gas digging cave well |
-
2015
- 2015-08-21 CN CN201520641483.3U patent/CN205025438U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294144A (en) * | 2021-02-19 | 2021-08-24 | 中国石油天然气股份有限公司 | Method and device for monitoring oil bailing swab |
| CN113294144B (en) * | 2021-02-19 | 2023-10-31 | 中国石油天然气股份有限公司 | Monitoring method and device for oil bailing pump |
| CN115306369A (en) * | 2022-08-25 | 2022-11-08 | 山西省煤炭地质勘查研究院 | Structure and mining process of coal bed gas digging cave well |
| CN115306369B (en) * | 2022-08-25 | 2024-04-26 | 山西省煤炭地质勘查研究院有限公司 | Structure of coal bed gas hole digging well and exploitation process |
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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: 20160210 Termination date: 20180821 |