CN204041041U - Oil well increases liquid device - Google Patents
Oil well increases liquid device Download PDFInfo
- Publication number
- CN204041041U CN204041041U CN201420469716.1U CN201420469716U CN204041041U CN 204041041 U CN204041041 U CN 204041041U CN 201420469716 U CN201420469716 U CN 201420469716U CN 204041041 U CN204041041 U CN 204041041U
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- China
- Prior art keywords
- valve chest
- central tube
- oil well
- oil
- liquid device
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Abstract
The utility model provides a kind of oil well and increases liquid device, comprise central tube, valve chest, be arranged on the ball-and-seat in described valve chest and be connected to the inlet of described valve chest lower end, the upper end of described central tube is connected with oil well pump lifting tubing string end by top connection, described central tube lower end is connected with described valve chest upper end, is provided with soft plunger and oil well casing keeps sealing at the central tube lower end outer wall with described valve chest junction.The oil well that the utility model provides increases liquid device, automatically ball-and-seat can be closed when shrinking move with lifting oil pipe, fluid negative pressure below device is increased, improve the producing pressure differential of oil reservoir, increase the swabbing action of formation, add the fluid discharge on stratum, thus reach the object increasing oil reservoir Liquid output, improve well oil output.
Description
Technical field
The utility model relates to technical field of petroleum extraction, and particularly a kind of oil well increases liquid device.
Background technology
On stream, more than 95% is adopt Horse Beam Pumping Unit to drive the mode of underground reciprocating conventional pumps oil pumping lifting to recover the oil to existing oil field at home.Because this oil pumping mode is simple, durable, conform strong, so be used widely in oil field at home.And the Horse Beam Pumping Unit of existing oil field development application drives underground reciprocating conventional pumps oil pumping lifting by sucker rod, because oil pipe during work and oil pumping pump rod exist elastic expansion range (each 0.04%) when load exchanges, when particularly pump setting depth being greater than to the deep well lifting of 2000 meters, the elastic expansion range that oil pipe produces is longer, and most of oil well causes waste because not having the energy of Appropriate application lifting oil pipe free-extension.Therefore, adopt Horse Beam Pumping Unit to drive the oil production method efficiency of underground reciprocating conventional pumps oil pumping lifting lower, often only have about 30%, thus each oil field in this on waste a large amount of energy.Therefore, in order to improve the tar productivity having rod pumping mode to oil well, needing to arrange relevant accessory device to improve the tar productivity of oil well, realizing the object improving oil output per well.
Utility model content
The utility model object is to provide a kind of oil well and increases liquid device, be connected to the end of deep-well oil pump lifting tubing string, by utilizing the energy of deep-well oil pump lifting oil pipe free-extension to produce suction to oil reservoir, improving the Liquid output on stratum, realizing the raising of oil output per well.
For solving the problems of the technologies described above, the utility model provides a kind of oil well and increases liquid device, comprise central tube, valve chest, be arranged on the ball-and-seat in described valve chest, and be connected to the inlet of described valve chest lower end, the upper end of described central tube connects with the top connection for being connected oil well pump lifting tubing string, described central tube lower end is connected with described valve chest upper end, with the central tube of described valve chest junction on be provided with soft plunger, described soft plunger is by the support ring be enclosed within described central tube, the wear-resisting leather cup of oil resistant, polyurethane spacer ring string is folded to be formed, the described central tube of described soft plunger upper part is provided with one section expanding joint and takes advantage of platform as propping up of described soft plunger, the inclined via-hole of oblique central tube center line is provided with around the central tube at described expanding joint place, described ball-and-seat to be fixed in the middle part of valve chest on inwall by the retainer ring be fixed on described valve chest inwall, described central tube near described retainer ring bottom is provided with pre-drainage through hole.
Further, each support ring of described soft plunger, the wear-resisting leather cup of oil resistant and polyurethane spacer ring form primary seal, and described soft plunger is sealed by 3-5 level that string is folded to be formed.
Further, described inclined via-hole is 6-8, is evenly distributed on the tube wall of the same circumference of described central tube.
Further, described pre-drainage through hole is 6-8, is evenly distributed on the tube wall of the same circumference of described valve chest, and described pre-drainage through hole is corresponding with described inclined via-hole arranges.
Further, described ball-and-seat is the standing valve be made up of valve ball cover, valve ball and valve ball seat.
Further, the valve ball seat of described standing valve is fixed on described valve chest inwall by described retainer ring.
Further, described retainer ring is fixed on valve chest inwall by the pin in described valve chest screw thread through hole.
Further, sealing ring is provided with between described valve ball seat and described valve chest inwall.
The oil well that the utility model provides increases liquid device, with deep-well oil pump with the use of, this device is connected to the down-hole least significant end of deep-well oil pump lifting tubing string, utilizes the flexible of lifting oil pipe, drive this device to move up and down in down-hole and carry out suction oil reservoir when deep well pump work.The central tube outer wall that the oil well provided due to the utility model increases liquid device is provided with one section and seals with oil well casing the soft plunger contacted, and can make to keep good sealing performance between oil well increasing liquid device and oil well casing; And the fluid passage of valve chest inside is provided with ball-and-seat, can close when the utility model device shrinks move with lifting oil pipe, the fluid negative pressure below device be increased, improves the producing pressure differential of oil reservoir, increase stratum fluid discharge.Thus reach the object increasing oil reservoir Liquid output, improve well oil output.
Accompanying drawing explanation
1/4 cross-sectional view of the oil well increasing liquid device that Fig. 1 provides for the utility model embodiment.
Detailed description of the invention
See Fig. 1, oil well that the utility model embodiment provides increases liquid device, comprises central tube 2, valve chest 7, is arranged on the ball-and-seat in valve chest 7 and is connected to the inlet 14 of valve chest 7 lower end.The upper end of central tube 2 is connected with top connection 1, top connection 1 is for being connected with oil well pump lifting tubing string, central tube 2 lower end and valve chest 7 upper end screwed connection, ball-and-seat is fixed in the middle part of valve chest 7 on inwall by the retainer ring 13 be fixed on valve chest 7 inwall, with the central tube 2 of valve chest 7 junction on be provided with soft plunger to ensure to seal with oil well casing.
Wherein, soft plunger is gone here and there to fold formed by the support ring 4 be enclosed within central tube 2, the wear-resisting leather cup 5 of oil resistant, polyurethane spacer ring 6, the wear-resisting leather cup 5 of each support ring 4 of soft plunger, oil resistant and polyurethane spacer ring 6 form primary seal, soft plunger is sealed to go here and there to fold by 3-5 level and forms, in order to ensure that there is between this device and oil well casing good sealing, as a kind of embodiment of the best, the whole soft plunger of this device is folded by 4 grades of sealing strings to form.
The central tube 2 of soft plunger upper part is provided with one section expanding joint and takes advantage of platform as propping up of soft plunger.Due in the process that this device moves up and down in sleeve pipe, solids particles precipitate thing is easily produced in the outside of central tube, these solid particle sediments can be deposited on the top of soft plunger, the wearing and tearing of soft plunger will be caused when depositing to a certain amount of, cause poorly sealed or hydraulic slip, can stuck soft plunger time serious, cause stopping production overhaul.In order to dredge solid particle sediment, the inclined via-hole 3 of oblique central tube 2 center line is provided with around the central tube 2 at expanding joint place, the number of inclined via-hole 3 is 6-8, be evenly distributed on the tube wall of the same circumference of central tube 2, these inclined via-holes 3 can avoid solid particle sediment to stop on soft plunger, make the solid particle sediment of generation constantly enter in central tube 2 to be mixed with stratum fluid from inclined via-hole 3 and enter lifting tubing string.In order to better dredge solid particle sediment, as a kind of detailed description of the invention of the present utility model, the inclined via-hole 3 on central tube 2 is set to 8.
In order to conveniently well killing fluid can be pressed into when lower subjob in stratum, central tube 2 near retainer ring 13 bottom is provided with pre-drainage through hole 15, the number of pre-drainage through hole 15 is 6-8, be evenly distributed on the tube wall of the same circumference of valve chest 7, and pre-drainage through hole 15 is corresponding with inclined via-hole 3 arranges.When needing in lower subjob to increase the formation pressure in stratum, can be pressed into well killing fluid from oil pipe, well killing fluid enters central tube 2 from lifting tubing string, is then pressed in oil well from the pre-drainage through hole 15 of valve chest 7, thus increases formation pressure.
Wherein, ball-and-seat is the standing valve be made up of valve ball cover 8, valve ball 9 and valve ball seat 10, the valve ball seat 10 of standing valve is fixed on valve chest 7 inwall by retainer ring 13, and retainer ring 13 is fixed on valve chest 6 inwall with the pin 12 in screw thread through hole by being arranged on valve chest 7.And in order to ensure the excellent sealing between standing valve and valve chest 7, between the valve ball seat 10 of standing valve and valve chest 7 inwall, be provided with sealing ring 11.
The course of work and the operating principle of the oil well increasing liquid device that the utility model provides are as follows:
When oil field mouthful oil well is before lower oil well pump lifting tubing string, first descend milled sleeve to carry out cover milling, particularly this transmitting apparatus sleeve position place residing for down-hole to oil well casing, upper and lower 2 meters of positions will carry out the milling of 3-5 time repeatedly in its vicinity.Its objective is the soft plunger in order to protect the multistage high-abrasive material composition on this device central tube 2, preventing soft plunger sleeve when going into the well from grinding away.Proposition milled sleeve after cover milling completes, then from bottom to up according to following this device that is linked in sequence of going into the well: oil well increases liquid device+multiple-tubing string+four meters long screen casing+multiple-tubing string+conventional whole cylinder pump+multiple-tubing string and is connected to well head oil pipe hanger.To go into the well again after pressure testing is qualified corresponding sucker rod.Open after the preparation before taking out completes every, start oil pumper and carry out pumping operation.When pumping unit horsehead drives sucker rod+pump plunger in well upwards to start to aspirate (travelling valve closedown), also be now the process that whole time sucker rod and whole time lifting oil pipe load exchange, namely whole time lifting oil pipe (fluid column) load passes on whole rod string; After whole time lifting oil pipe (fluid column) load is laid down, whole time lifting oil pipe nature under the elastic reaction of material itself shrinks to uphole end (fixed end), and contracted length is 0.04% of lifting oil pipe length.Because this device is connected to the end of lifting tubing string, therefore this device can move upward in company with the contraction of lifting oil pipe.When lifting oil pipe drives this device to move up, because there is the sealing function of soft plunger between oil well casing and central tube 2, and the standing valve in valve chest 7 internal fluid passages is closed under the effect of valve ball 9, OIH liquid cannot flow and be forced to lifting oil pipe upwards lifting.Fluid pressure now in well below this device declines fast, and lifting oil pipe drives in the continuation of this device and carries, and the liquid negative pressure below this sample device increases, and increases the swabbing action of formation, thus improves the liquid outlet quantity on stratum.Because this device can increase the suction force of formation, suction de-plugging effect therefore also can be played to the well around oil well.And because the valve chest 7 of central tube 2 lower end of this device is built with being used as ball-and-seat standing valve, therefore this device also has the antipollution effect of oil well cleanup.
When pumping unit horsehead drives sucker rod+pump plunger in well to move down, (travelling valve is opened, the standing valve of pump is closed), be again now the process of whole time lifting oil pipe load exchange, namely whole time lifting oil pipe (fluid column) load passes on whole time tubing string; After whole time lifting oil pipe carries whole time (fluid column) load, tail end nature under the elastic reaction of material itself of whole time lifting oil pipe extends to shaft bottom (free end), and the length of elongation is similarly 0.04% of lift tube column length; Be connected to lifting tubing string this device bottom, move downward together in company with lifting oil pipe, after fluid now below this device is squeezed, sub-fraction fluid is had to flow out from the gap between sleeve pipe and soft plunger, but it is inner that most of fluid enters valve chest 7 from inlet 14, the valve ball 9 backed down in standing valve is flowed between oil jacket through screen casing smoothly by central tube 2 and completes a course of work.
A kind of oil well that the utility model provides increases liquid device, and doing upper and lower aspiration procedure in down-hole is be synchronous with the oil pumping process of ground oil pumper, does not affect the process of oil pumping.And this device can close standing valve automatically when shrinking move with lifting oil pipe, fluid negative pressure below device is increased, the producing pressure differential of oil reservoir can be improved, increase the swabbing action of formation, add the fluid discharge on stratum, thus reach the object increasing oil reservoir Liquid output, improve well oil output.
It should be noted last that, above detailed description of the invention is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to example, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (8)
1. an oil well increases liquid device, it is characterized in that: comprise central tube, valve chest, be arranged on the ball-and-seat in described valve chest, and be connected to the inlet of described valve chest lower end, the upper end of described central tube connects with the top connection for being connected oil well pump lifting tubing string, described central tube lower end is connected with described valve chest upper end, with the central tube of described valve chest junction on be provided with soft plunger, described soft plunger is by the support ring be enclosed within described central tube, the wear-resisting leather cup of oil resistant, polyurethane spacer ring string is folded to be formed, the described central tube of described soft plunger upper part is provided with one section expanding joint and takes advantage of platform as propping up of described soft plunger, the central tube at described expanding joint place is provided with the inclined via-hole of oblique central tube center line, described ball-and-seat to be fixed in the middle part of valve chest on inwall by the retainer ring be fixed on described valve chest inwall, described valve chest near described retainer ring bottom is provided with pre-drainage through hole.
2. oil well according to claim 1 increases liquid device, it is characterized in that: each support ring of described soft plunger, the wear-resisting leather cup of oil resistant and polyurethane spacer ring form primary seal, and described soft plunger is sealed by 3-5 level that string is folded to be formed.
3. oil well according to claim 1 increases liquid device, it is characterized in that: described inclined via-hole is 6-8, is evenly distributed on the tube wall of the same circumference of described central tube.
4. oil well according to claim 3 increases liquid device, it is characterized in that: described pre-drainage through hole is 6-8, is evenly distributed on the tube wall of the same circumference of described valve chest, and described pre-drainage through hole is corresponding with described inclined via-hole arranges.
5. oil well according to claim 1 increases liquid device, it is characterized in that: described ball-and-seat is the standing valve be made up of valve ball cover, valve ball and valve ball seat.
6. oil well according to claim 5 increases liquid device, it is characterized in that: the described valve ball seat of described standing valve is fixed on described valve chest inwall by described retainer ring.
7. oil well according to claim 6 increases liquid device, it is characterized in that: described retainer ring is fixed on valve chest inwall by the pin in described valve chest screw thread through hole.
8. oil well according to claim 6 increases liquid device, it is characterized in that: be provided with sealing ring between described valve ball seat and described valve chest inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469716.1U CN204041041U (en) | 2014-08-19 | 2014-08-19 | Oil well increases liquid device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469716.1U CN204041041U (en) | 2014-08-19 | 2014-08-19 | Oil well increases liquid device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204041041U true CN204041041U (en) | 2014-12-24 |
Family
ID=52241719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420469716.1U Withdrawn - After Issue CN204041041U (en) | 2014-08-19 | 2014-08-19 | Oil well increases liquid device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204041041U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196511A (en) * | 2014-08-19 | 2014-12-10 | 中国石油天然气股份有限公司 | Oil well liquid increasing device |
| CN110206494A (en) * | 2018-02-28 | 2019-09-06 | 中国石油天然气股份有限公司 | Cable-styled oil pumping unit matching process pipe string |
-
2014
- 2014-08-19 CN CN201420469716.1U patent/CN204041041U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196511A (en) * | 2014-08-19 | 2014-12-10 | 中国石油天然气股份有限公司 | Oil well liquid increasing device |
| CN110206494A (en) * | 2018-02-28 | 2019-09-06 | 中国石油天然气股份有限公司 | Cable-styled oil pumping unit matching process pipe string |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141224 Effective date of abandoning: 20170215 |