CN201176866Y - Fixed pressure production mandrel - Google Patents
Fixed pressure production mandrel Download PDFInfo
- Publication number
- CN201176866Y CN201176866Y CNU2008200897515U CN200820089751U CN201176866Y CN 201176866 Y CN201176866 Y CN 201176866Y CN U2008200897515 U CNU2008200897515 U CN U2008200897515U CN 200820089751 U CN200820089751 U CN 200820089751U CN 201176866 Y CN201176866 Y CN 201176866Y
- Authority
- CN
- China
- Prior art keywords
- central tube
- plunger
- kill
- shell
- sliding sleeve
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 239000004576 sand Substances 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 3
- 239000011324 bead Substances 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Paper (AREA)
Abstract
The utility model relates to a constant pressure bottom-hole regulator, which relates to an oil production auxiliary tool. The constant pressure bottom-hole regulator solves the problem that no corresponding oil production auxiliary tool under an oil production well of an oil field in China currently can realize constant pressure oil production of an oil layer. A central tube (8) is in threaded connection with an upper joint (1) and a lower joint (13); the upper end of a shell (2) is sleeved on an inner circular bead end face (1-1) on the lower end of the upper joint (1); a plunger pedestal (11) is sleeved on the central tube (8) and fixedly connected with the lower joint (13); a constant pressure spring (7) is arranged between a pressure regulating gasket (6) and a lower cap (9); a sand control liner (12) is arranged between the shell (2) and the lower joint (13); and the upper end of the sand control liner (12) is fixed on the plunger pedestal (11), and the lower end of the sand control liner (12) is fixed on the lower joint (13). The constant pressure bottom-hole regulator designs the sand control liner, thereby having the function of sand prevention; the plunger structure can have the function of reverse interception; due to design of a pressure balance sliding bush, the bottom-hole regulator is in the off state because the pressure balance sliding bush shields an upper liquid inlet hole of the central tube under the condition of descending, thereby the constant pressure bottom-hole regulator can have the function of a pressure balance well.
Description
Technical field
The utility model relates to a kind of oil recovery aid.
Background technology
At present there is not corresponding oil recovery aid can realize the level pressure extraction of oil reservoir in the oil well down-hole.
The utility model content
The purpose of this utility model provides a kind of level pressure production mandrel, does not at present domesticly have corresponding oil recovery aid can realize the problem of the level pressure extraction of oil reservoir in the oil well down-hole to solve.The utility model comprises top connection, shell, not kill-job sliding sleeve, pin, upper pressing cap, the pressure regulation pad, the level pressure spring, central tube, lower pressing cap, assembly for plunger, plunger mat, sand control screen and lower contact, central tube is threaded with top connection and lower contact, the upper end of shell is enclosed within on the interior shoulder end face of top connection lower end, not kill-job sliding sleeve places between shell and the central tube and is located at inlet opening place on the central tube, not kill-job sliding sleeve by dowel fixes on central tube, upper pressing cap is sleeved on the central tube of not kill-job sliding sleeve lower end, the pressure regulation pad places on the shoulder end face of upper pressing cap lower end, plunger mat is sleeved on the central tube and is affixed with lower contact, assembly for plunger places in the plunger hole of plunger mat, lower pressing cap places on the assembly for plunger upper surface, between pressure regulation pad and lower pressing cap, be provided with the level pressure spring, sand control screen places between shell and the lower contact and the upper end of sand control screen is fixed on the plunger mat, and the lower end of sand control screen is fixed in the lower contact.
The utlity model has following beneficial effect: the utility model is simple in structure, and reliable in action can multistagely be used, and has designed sand control screen, has the sand control function.Piston structure of the present utility model can play oppositely the effect of dam (being ball-and-seat), can satisfy the needs that layering tubing string inside is suppressed.The seal combination of plunger adopts Glais ring, dynamically and static sealing good, the abrasion resistance height, sliding capability is better.Designed not kill-job sliding sleeve, when going into the well since not kill-job sliding sleeve to the effect of blocking in the enterprising liquid of central tube hole, production mandrel is in closed condition, only suppresses release and pushes sliding sleeve open the back production mandrel and just can open, and can play the effect of not kill-job.
Description of drawings
Fig. 1 is an overall structure half sectional view of the present utility model.
The specific embodiment
The specific embodiment one: present embodiment is described in conjunction with Fig. 1, present embodiment comprises top connection 1, shell 2, not kill-job sliding sleeve 3, pin 4, upper pressing cap 5, pressure regulation pad 6, level pressure spring 7, central tube 8, lower pressing cap 9, assembly for plunger 10, plunger mat 11, sand control screen 12 and lower contact 13, central tube 8 is threaded with top connection 1 and lower contact 13, the upper end of shell 2 is enclosed within on the interior shoulder end face 1-1 of top connection 1 lower end, not kill-job sliding sleeve 3 places between shell 2 and the central tube 8 and is located at inlet opening 8-3 place on the central tube 8, not kill-job sliding sleeve 3 is fixed on the central tube 8 by pin 4, upper pressing cap 5 is sleeved on the central tube 8 of not kill-job sliding sleeve 3 lower ends, pressure regulation pad 6 places on the shoulder end face 5-1 of upper pressing cap 5 lower ends, plunger mat 11 is sleeved on the central tube 8 and is affixed with lower contact 13, assembly for plunger 10 places in the plunger hole 11-1 of plunger mat 11, lower pressing cap 9 places on assembly for plunger 10 upper surfaces, between pressure regulation pad 6 and lower pressing cap 9, be provided with level pressure spring 7, sand control screen 12 places between shell 2 and the lower contact 13 and the upper end of sand control screen 12 is fixed on the plunger mat 11, and the lower end of sand control screen 12 is fixed in the lower contact 13.When instrument is gone into the well, because the operation of blocking of not kill-job sliding sleeve is arranged, can realize snubbing serving, when suppressing release, the inlet opening of hydraulic pressure on level pressure production mandrel central tube acts on not kill-job sliding sleeve lower surface, promote not kill-job sliding sleeve shear pin and nail on row, abdicate the production passage, the screen casing of flowing through of the liquid in the oil reservoir enters production mandrel and pushes open behind the assembly for plunger just and can produce from producing in the central tube that passage enters production mandrel.Just can change the pretightning force of level pressure spring by the number that changes the pressure regulation pad, thereby change the opening pressure of level pressure production mandrel.
The specific embodiment two: in conjunction with Fig. 1 present embodiment is described, assembly for plunger 10 is made up of sealing ring pressure cap 14, black box 15 and piston body 16 in the present embodiment; Black box 15 places the top of piston body 16, and sealing ring pressure cap 14 places the top of seal combination 15.So being provided with is in order to realize the isolation of central tube and outside oil reservoir, when having only active force that pressure reduction outside when production mandrel and central tube produces greater than the pretightning force of spring, just assembly for plunger can be pushed out plunger mat, thereby has realized the purpose of level pressure production.
The specific embodiment three: in conjunction with Fig. 1 present embodiment is described, what present embodiment and the specific embodiment one were different is that the present embodiment increase has spacing jump ring 17, and described spacing jump ring 17 is packed in the groove 3-1 on the not kill-job sliding sleeve 3.So being provided with is in order to carry out spacing to not kill-job sliding sleeve.
The specific embodiment four: present embodiment is described in conjunction with Fig. 1, present embodiment and the specific embodiment one, the specific embodiment two are different is that present embodiment also increases sealing ring 18 is arranged, between top connection 1 and the central tube 8, between not kill-job sliding sleeve 3 and the central tube 8, between not kill-job sliding sleeve 3 and the shell 2, between plunger mat 11 and the central tube 8, between plunger mat 11 and the shell 2, be provided with sealing ring 18 between lower contact 3 and the central tube 8.So being provided with is in order to realize the excellent sealing of whole device.
Daqing oil field three Bei2-362-P43Jing of factory that recover the oil, in August, 2006 regulating multi-zone production rate, divide Pyatyi five sections productions, wherein the high aquifer of two high production fluids of SII2+3 and SII13-16 adopts the control of level pressure production mandrel to produce, and SII5-8 adopts the adjustable water blockoff device of I type temporarily to decontrol production.Join antenatal day production fluid 133.2t, day produce oil 11.2t, moisture 91.6%, join day production fluid 79t at present in postpartum, day produce oil 12t, moisture 84.9%, the oily 0.8t that increases day by day, daily precipitation 54.7t, 6.7 percentage points of moisture declines.
Claims (4)
1, a kind of level pressure production mandrel, it comprises top connection (1), shell (2), not kill-job sliding sleeve (3), pin (4), upper pressing cap (5), pressure regulation pad (6), level pressure spring (7), central tube (8), lower pressing cap (9), assembly for plunger (10), plunger mat (11), sand control screen (12) and lower contact (13), it is characterized in that central tube (8) is threaded with top connection (1) and lower contact (13), the upper end of shell (2) is enclosed within on the interior shoulder end face (1-1) of top connection (1) lower end, not kill-job sliding sleeve (3) places between shell (2) and the central tube (8) and the inlet opening of being located on the central tube (8) (8-3) is located, not kill-job sliding sleeve (3) is fixed on the central tube (8) by pin (4), upper pressing cap (5) is sleeved on the central tube (8) of not kill-job sliding sleeve (3) lower end, pressure regulation pad (6) places on the shoulder end face (5-1) of upper pressing cap (5) lower end, it is last and affixed with lower contact (13) that plunger mat (11) is sleeved on central tube (8), assembly for plunger (10) places in the plunger hole (11-1) of plunger mat (11), lower pressing cap (9) places on assembly for plunger (10) upper surface, between pressure regulation pad (6) and lower pressing cap (9), be provided with level pressure spring (7), sand control screen (12) places between shell (2) and the lower contact (13) and the upper end of sand control screen (12) is fixed on the plunger mat (11), and the lower end of sand control screen (12) is fixed in the lower contact (13).
2, level pressure production mandrel according to claim 1 is characterized in that assembly for plunger (10) is made up of sealing ring pressure cap (14), black box (15) and piston body (16); Black box (15) places the top of piston body (16), and sealing ring pressure cap (14) places the top of seal combination (15).
3, level pressure production mandrel according to claim 1 is characterized in that it also comprises spacing jump ring (17), and described spacing jump ring (17) is packed in the groove (3-1) on the not kill-job sliding sleeve (3).
4, level pressure production mandrel according to claim 1, it is characterized in that it also comprises sealing ring (18), between top connection (1) and the central tube (8), between not kill-job sliding sleeve (3) and the central tube (8), between not kill-job sliding sleeve (3) and the shell (2), between plunger mat (11) and the central tube (8), between plunger mat (11) and the shell (2), be provided with sealing ring (18) between lower contact (3) and the central tube (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200897515U CN201176866Y (en) | 2008-04-17 | 2008-04-17 | Fixed pressure production mandrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200897515U CN201176866Y (en) | 2008-04-17 | 2008-04-17 | Fixed pressure production mandrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201176866Y true CN201176866Y (en) | 2009-01-07 |
Family
ID=40216885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200897515U Expired - Lifetime CN201176866Y (en) | 2008-04-17 | 2008-04-17 | Fixed pressure production mandrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201176866Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612636A (en) * | 2015-01-22 | 2015-05-13 | 中国石油大学(华东) | Automatic underground layer change device for oil well multilayer exploitation |
| CN112228017A (en) * | 2020-11-24 | 2021-01-15 | 辽宁新华仪器有限公司 | External debugging constant pressure matching production kit |
| CN112302587A (en) * | 2020-11-24 | 2021-02-02 | 辽宁新华仪器有限公司 | Internal debugging fixed-pressure matching tool |
-
2008
- 2008-04-17 CN CNU2008200897515U patent/CN201176866Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612636A (en) * | 2015-01-22 | 2015-05-13 | 中国石油大学(华东) | Automatic underground layer change device for oil well multilayer exploitation |
| CN112228017A (en) * | 2020-11-24 | 2021-01-15 | 辽宁新华仪器有限公司 | External debugging constant pressure matching production kit |
| CN112302587A (en) * | 2020-11-24 | 2021-02-02 | 辽宁新华仪器有限公司 | Internal debugging fixed-pressure matching tool |
| CN112228017B (en) * | 2020-11-24 | 2024-09-20 | 辽宁新华仪器有限公司 | External debugging constant pressure and yield-regulating matched tool |
| CN112302587B (en) * | 2020-11-24 | 2025-01-21 | 辽宁新华仪器有限公司 | Internal debugging and pressure matching tools |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090107 |