CN110608158A - Anti-gas pumping-assisting thick oil pump - Google Patents
Anti-gas pumping-assisting thick oil pump Download PDFInfo
- Publication number
- CN110608158A CN110608158A CN201910997020.3A CN201910997020A CN110608158A CN 110608158 A CN110608158 A CN 110608158A CN 201910997020 A CN201910997020 A CN 201910997020A CN 110608158 A CN110608158 A CN 110608158A
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- China
- Prior art keywords
- gas
- liquid
- pump barrel
- joint
- plunger
- 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.)
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Links
- 239000007788 liquid Substances 0.000 claims abstract description 76
- 238000000926 separation method Methods 0.000 claims abstract description 38
- 238000005086 pumping Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000003129 oil well Substances 0.000 description 11
- 239000012530 fluid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/06—Venting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
A gas-proof thick oil pump with pumping aid is composed of upper pump barrel, upper plunger, discharge valve, connecting joint, sucking valve, lower plunger, lower pump barrel, connecting pipe, gas-liquid shunt joint, centrifugal separator, external barrel, base and screw bolt, which are reciprocating up and down during pumping, and under the action of screw thread the centrifugal separator rotates to generate gas and liquid with density difference, and when the gas-liquid mixture rotates, the liquid is in external layer and gas is in internal layer, the gas is in gas channel and passes through gas discharge slot into well bore, and the liquid is pumped out via liquid channel into upper pump cavity, so having good separation effect, because the thick oil is stirred when passing through the centrifugal separation device, the fluidity of the thick oil can be improved, and the thick oil is beneficial to being pumped out.
Description
Technical Field
The invention relates to equipment for oil exploitation and well repair, in particular to a device for an oil pumping well, which is a gas-proof pumping-assisted thick oil pump.
Background
In the pumping well of current oil-gas ratio, in gaseous entering oil-well pump, reduce the fullness of oil-well pump, reduce the pump efficiency of oil-well pump, gaseous still can produce the airlock when serious, make the inlet valve of oil-well pump, the delivery valve can not be opened, the oil pump can not the oil discharge, in order to solve gaseous influence to the oil-well pump, generally all adopt the gas anchor to separate, make gaseous follow sleeve pipe escape, reduce gaseous entering oil-well pump in, current simple and easy gas anchor is only through changing the flow direction, carry out gas-liquid separation under the effect of gas-liquid density difference, this kind of gas anchor is taken in by fluid easily when using and is difficult to separate, the gas-liquid sharing effect is very poor. The existing gas anchor is also provided with a thread rib in an annular channel which turns to flow to form a spiral channel, so that a liquid-gas mixture flows in the spiral channel to generate centrifugal separation, but the gas-liquid mixture rotates due to no external force, a certain rotating speed is generated depending on the flow, and the gas is difficult to be well separated from the liquid flow due to the rotating speed, so the using effect of the gas anchor is poor.
Disclosure of Invention
The invention aims to design a gas-proof pumping-assisted thick oil pump, which overcomes the problems of the existing gas anchor, improves the gas-liquid separation effect, can generate feedback force, and can overcome the friction force between a sucker rod and oil liquid when the sucker rod descends, so that the sucker rod can normally work in a thick oil well.
The purpose of the invention is realized as follows: the centrifugal separator comprises an upper pump barrel, an upper plunger, a discharge valve, a communicating joint, an suction valve, a lower plunger, a lower pump barrel, a connecting pipe, a gas-liquid shunting joint, a centrifugal separation device, an outer barrel, a base and a screw rod, wherein the upper part of the lower pump barrel is connected with the lower part of the upper pump barrel, the upper plunger, the discharge valve, the communicating joint, the suction valve and the lower plunger are sequentially connected and then descend into the upper pump barrel and the lower pump barrel, the upper plunger is matched and sealed with the upper pump barrel, the lower plunger is matched and sealed with the lower pump barrel, the pump diameter of the upper pump barrel is larger than that of the lower pump barrel, a communicating groove is arranged on the communicating joint, an oil inlet groove is arranged on the lower part of the lower plunger, the screw rod is connected with the lower part of the lower pump barrel, an external thread is arranged on the screw rod, the upper part of the connecting pipe is connected with the lower part of the lower pump barrel, the gas-liquid shunting, The gas channel is close to the central hole of the gas-liquid shunt joint and is opened to the middle part of the gas-liquid shunt joint from bottom to top, the gas channel is transversely opened in the middle part of the gas-liquid shunt joint and is communicated with the upper part of the gas channel, so that gas at the lower part of the gas channel can be discharged to the outside of the gas-liquid shunt joint through the gas channel, the upper part of the liquid channel is communicated with the inside of the connecting pipe, the liquid channel is close to one side of the outer wall of the gas-liquid shunt joint, the oil inlet groove is positioned in the connecting pipe, the centrifugal separation device is provided with internal threads, the internal threads of the centrifugal separation device are screwed with the external threads on the screw rod, the centrifugal separation device can rotate when the screw rod moves up and down, the centrifugal separation device is provided with spiral sheets, and the outer cylinder is sleeved outside the centrifugal separation device, the upper part of the outer cylinder is connected with the lower part of the gas-liquid shunt joint, the base is arranged on the lower part of the outer cylinder, the lower part of the centrifugal separation device is seated on the upper end surface of the base, the upper part of the centrifugal separation device is limited by the lower end surface of the gas-liquid shunt joint, and the lower part of the liquid channel is communicated with the outer cylinder.
The invention has the beneficial effects that: when pumping oil, the screw rod reciprocates up and down, the centrifugal separation device rotates under the action of screw thread, so that the gas-liquid mixture passing through the centrifugal separation device rotates, the gas density is lower than that of liquid, when the gas-liquid mixture rotates, the liquid is positioned at the outer layer, the gas is positioned at the inner layer, the gas channel is close to the central hole of the gas-liquid shunt joint, the liquid channel is close to the outer wall of the gas-liquid shunt joint, therefore, the gas enters the shaft from the gas channel through the exhaust groove, the liquid enters the upper pump cavity through the liquid channel and is pumped out, because the gas-liquid mixture rotates under the action of external force, the rotating speed is high, the separation effect is good, the design purpose can be achieved, the upper pump barrel, the upper plunger, the discharge valve, the communication joint, the suction valve, the lower plunger and the lower pump barrel form a feedback oil pump, the downward feedback force can be generated, and the friction, the invention can work normally in the thick oil well, because the thick oil is stirred when passing through the centrifugal separation device, the fluidity of the thick oil can be improved, and the thick oil is beneficial to being pumped out. When the centrifugal separation device rotates, the spiral sheet on the centrifugal separation device can pressurize well fluid, so that the inlet pressure of the pump is increased, the pumping-assisting effect on the oil well pump can be achieved, and the pump efficiency of the oil well pump is improved. Therefore, the meal has remarkable economic benefit.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
As can be seen from the figure, the embodiment of the invention comprises an upper pump barrel 1, an upper plunger 2, a discharge valve 3, a communication joint 4, a suction valve 5, a lower plunger 6, a lower pump barrel 7, a connecting pipe 8, a gas-liquid diversion joint 9, a centrifugal separation device 9, an outer barrel 11, a base 12 and a screw 13, wherein the upper part of the lower pump barrel 7 is connected with the lower part of the upper pump barrel 1, the upper plunger 2, the discharge valve 3, the communication joint 4, the suction valve 5 and the lower plunger 6 are sequentially connected and then are put into the upper pump barrel 1 and the lower pump barrel 7, the upper plunger 2 is matched and sealed with the upper pump barrel 1, the lower plunger 6 is matched and sealed with the lower pump barrel 7, the pump diameter of the upper pump barrel 1 is larger than that of the lower pump barrel 7 (generally smaller by two levels, if the pump diameter of the upper pump barrel 1 is phi 70, the pump diameter of the lower pump barrel 7 is phi 44), the communication joint 4-1 is provided with the communication groove 6-1, the lower part of the lower plunger 6 is provided with an oil inlet groove 6, the screw 13 is provided with external threads, the upper part of the connecting pipe 8 is connected with the lower part of the lower pump barrel 7, the gas-liquid shunt joint 9 is sleeved outside the screw 13, the lower part of the connecting pipe 8 is connected with the upper part of the gas-liquid shunt joint 9, the gas-liquid shunt joint 9 is provided with a gas channel 9-2, a liquid channel 9-3 and an exhaust groove 9-1, the gas-liquid shunt joint 9 is provided with a central hole, the gas channel 9-2 is close to the central hole of the gas-liquid shunt joint 9, the gas channel 9-2 is opened to the middle part of the gas-liquid shunt joint 9 from bottom to top, the exhaust groove 9-1 is transversely opened in the middle part of the gas-liquid shunt joint 9, the exhaust groove 9-1 is communicated with the upper part of the gas channel 9-2, so that the gas at the lower part of the gas channel 9-2 can be exhausted to the outside, the upper part of the liquid channel 9-3 is communicated with the inside of the connecting pipe 8, the liquid channel 9-3 is close to one side of the outer wall of the gas-liquid shunt joint 9, the oil inlet groove 6-1 is arranged in the connecting pipe 8, the centrifugal separation device 9 is provided with an internal thread, the internal thread of the centrifugal separation device 9 is screwed with an external thread on the screw 13, the centrifugal separation device 9 can rotate when the screw moves up and down, a spiral sheet is arranged on the centrifugal separation device 9, the outer barrel 11 is sleeved outside the centrifugal separation device 9, the upper part of the outer barrel 11 is connected with the lower part of the gas-liquid shunt joint 9, the base 12 is arranged at the lower part of the outer barrel 11, the lower part of the centrifugal separation device 9 is seated on the upper end face of the base 12, the upper part of the centrifugal separation device 9 is limited by the lower end face of the gas-liquid shunt joint 9, and the lower part of the liquid channel 9.
When pumping oil, the upper plunger 2, the discharge valve 3, the communication joint 4, the suction valve 5, the lower plunger 6 and the screw 13 reciprocate up and down, the lower centrifugal separation device 9 can not do axial movement, the centrifugal separation device 9 rotates under the action of screw threads, so that a gas-liquid mixture passing through the centrifugal separation device 9 rotates, the gas density is lower than that of liquid, when the gas-liquid mixture rotates, the liquid is at an outer layer, the gas is at an inner layer, the gas channel 9-2 is close to a central hole of the gas-liquid shunt joint 10, and the liquid channel is close to one side of the outer wall of the gas-liquid shunt joint, so that the gas enters a shaft from the gas channel 9-2 through the exhaust groove 9-1, the liquid enters an upper pump cavity through the liquid channel 9-3 to be pumped out, and the gas-liquid mixture rotates under the action of external force, the rotating speed is high, so that, the invention can achieve the design purpose, the upper pump barrel 1, the upper plunger 2, the discharge valve 3, the communicating joint 4, the suction valve 5, the lower plunger 6 and the lower pump barrel 7 form a feedback oil-well pump, can generate a downward feedback force, and can overcome the friction force between the sucker rod and thick oil when the sucker rod goes down.
When oil is pumped, oil enters the connecting pipe 8 through the liquid channel 9-3 and then enters the lower plunger 6 through the oil inlet groove 6-1, when the upper plunger 2, the discharge valve 3, the communication joint 4, the suction valve 5, the lower plunger 6 and the screw 13 go upwards, the discharge valve 3 is closed, the lower plunger 6 enters the upper pump barrel 1, the annular volume between the upper pump barrel 1 and the lower plunger 6 is increased, the pressure is reduced, the suction valve 5 is opened, and the separated oil flows through the suction valve 5 and enters the annular cavity between the upper pump barrel 1 and the lower plunger 6 through the communication groove 4-1. When the upper plunger 2, the discharge valve 3, the communication joint 4, the suction valve 5, the lower plunger 6 and the screw 13 move downwards, an annular cavity between the upper pump barrel 1 and the lower plunger 6 becomes small, the pressure rises, the suction valve 5 is closed, and the discharge valve 3 is opened by oil through the communication groove 4-1, so that the separated oil is pumped out. When the pumping rod goes down, the area of the upper end of the two ends of the upper plunger 2 bearing the discharge pressure is larger than that of the lower end, so that the pumping rod has downward hydraulic pressure, and the force is called as feedback force in the field of mechanical oil extraction and can help the pumping rod to overcome the resistance of thick oil to the pumping rod and smoothly go down.
Claims (1)
1. A gas-proof pumping-assisted thick oil pump comprises an upper pump barrel (1), an upper plunger (2), a discharge valve (3), a communicating joint (4), a suction valve (5), a lower plunger (6), a lower pump barrel (7), a connecting pipe (8), a gas-liquid shunt joint (9), a centrifugal separation device (9), an outer barrel (11), a base (12) and a screw (13), wherein the upper part of the lower pump barrel (7) is connected with the lower part of the upper pump barrel (1), the upper plunger (2), the discharge valve (3), the communicating joint (4), the suction valve (5) and the lower plunger (6) are sequentially connected and then are put into the upper pump barrel (1) and the lower pump barrel (7), the upper plunger (2) is matched and sealed with the upper pump barrel (1), the lower plunger (6) is matched and sealed with the lower pump barrel (7), the pump diameter of the upper pump barrel (1) is larger than that of the lower pump barrel (7), a communicating groove (4-1) is arranged on the joint (4), the method is characterized in that: an oil inlet groove (6-1) is arranged at the lower part of the lower plunger (6), the lower part of the lower plunger (6) is connected with a screw rod (13), external threads are arranged on the screw rod (13), the upper part of a connecting pipe (8) is connected with the lower part of a lower pump barrel (7), a gas-liquid shunt joint (9) is sleeved outside the screw rod (13), the lower part of the connecting pipe (8) is connected with the upper part of the gas-liquid shunt joint (9), a gas channel (9-2), a liquid channel (9-3) and an exhaust groove (9-1) are arranged on the gas-liquid shunt joint (9), the gas channel (9-2) is close to the central hole of the gas-liquid shunt joint (9), the gas channel (9-2) is opened to the middle part of the gas-liquid shunt joint (9) from bottom to top, the exhaust groove (9-1) is transversely opened in the middle part of the gas-liquid shunt joint (9, the exhaust groove (9-1) is communicated with the upper part of the gas channel (9-2), so that gas at the lower part of the gas channel (9-2) can be exhausted to the outside of the gas-liquid shunt joint (9) through the exhaust groove (9-1), the upper part of the liquid channel (9-3) is communicated with the inside of the connecting pipe (8), the liquid channel (9-3) is close to one side of the outer wall of the gas-liquid shunt joint (9), the oil inlet groove (6-1) is positioned in the connecting pipe (8), the centrifugal separation device (9) is provided with internal threads, the internal threads of the centrifugal separation device (9) are screwed with external threads on the screw rod (13), the centrifugal separation device (9) can rotate when the screw rod moves up and down, the centrifugal separation device (9) is provided with a spiral sheet, the outer cylinder (11) is sleeved outside the centrifugal separation device (9), the upper part of the outer cylinder (11) is connected with the lower part of the gas-liquid shunt joint (9), the base (12) is arranged at the lower part of the outer cylinder (11), the lower part of the centrifugal separation device (9) is seated on the upper end surface of the base (12), the upper part of the centrifugal separation device (9) is limited by the lower end surface of the gas-liquid shunt joint (9), and the lower part of the liquid channel (9-3) is communicated with the outer cylinder (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910997020.3A CN110608158A (en) | 2019-10-20 | 2019-10-20 | Anti-gas pumping-assisting thick oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910997020.3A CN110608158A (en) | 2019-10-20 | 2019-10-20 | Anti-gas pumping-assisting thick oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110608158A true CN110608158A (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910997020.3A Pending CN110608158A (en) | 2019-10-20 | 2019-10-20 | Anti-gas pumping-assisting thick oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110608158A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118030511A (en) * | 2024-04-11 | 2024-05-14 | 新疆坤隆石油装备有限公司 | Overhead gas anchor submersible screw pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2471930Y (en) * | 2000-12-12 | 2002-01-16 | 中国石油化工股份有限公司中原油田分公司采油三厂 | Underground oil gas separator |
| CN203081734U (en) * | 2012-11-30 | 2013-07-24 | 中国石油天然气股份有限公司 | Anti-airlock hydraulic feedback oil-well pump |
| CN103541887A (en) * | 2013-09-16 | 2014-01-29 | 中国石油天然气股份有限公司 | Sand-preventing gas-preventing integrated oil production device |
| CN203730267U (en) * | 2013-12-10 | 2014-07-23 | 四川澳维采油设备有限公司 | Oil well pump with gas-liquid separation device |
| CN204627963U (en) * | 2015-05-25 | 2015-09-09 | 山东寿光市坤隆石油机械股份有限公司 | Blowout prevention feedback oil sucking pump |
| CN205618341U (en) * | 2016-05-20 | 2016-10-05 | 日照原野机械制造有限公司 | Novel hydraulic feedback pump |
| CN210715038U (en) * | 2019-10-20 | 2020-06-09 | 山东四通石油技术开发有限公司 | Anti-gas pumping-assisting thick oil pump |
-
2019
- 2019-10-20 CN CN201910997020.3A patent/CN110608158A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2471930Y (en) * | 2000-12-12 | 2002-01-16 | 中国石油化工股份有限公司中原油田分公司采油三厂 | Underground oil gas separator |
| CN203081734U (en) * | 2012-11-30 | 2013-07-24 | 中国石油天然气股份有限公司 | Anti-airlock hydraulic feedback oil-well pump |
| CN103541887A (en) * | 2013-09-16 | 2014-01-29 | 中国石油天然气股份有限公司 | Sand-preventing gas-preventing integrated oil production device |
| CN203730267U (en) * | 2013-12-10 | 2014-07-23 | 四川澳维采油设备有限公司 | Oil well pump with gas-liquid separation device |
| CN204627963U (en) * | 2015-05-25 | 2015-09-09 | 山东寿光市坤隆石油机械股份有限公司 | Blowout prevention feedback oil sucking pump |
| CN205618341U (en) * | 2016-05-20 | 2016-10-05 | 日照原野机械制造有限公司 | Novel hydraulic feedback pump |
| CN210715038U (en) * | 2019-10-20 | 2020-06-09 | 山东四通石油技术开发有限公司 | Anti-gas pumping-assisting thick oil pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118030511A (en) * | 2024-04-11 | 2024-05-14 | 新疆坤隆石油装备有限公司 | Overhead gas anchor submersible screw pump |
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