CN105464630A - Screw pump directly driven through large-torque submersible motor - Google Patents
Screw pump directly driven through large-torque submersible motor Download PDFInfo
- Publication number
- CN105464630A CN105464630A CN201610000477.9A CN201610000477A CN105464630A CN 105464630 A CN105464630 A CN 105464630A CN 201610000477 A CN201610000477 A CN 201610000477A CN 105464630 A CN105464630 A CN 105464630A
- Authority
- CN
- China
- Prior art keywords
- oil
- screw pump
- submersible
- torque
- high pulling
- 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.)
- Pending
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- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000003129 oil well Substances 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims description 30
- 238000010168 coupling process Methods 0.000 claims description 30
- 238000005859 coupling reaction Methods 0.000 claims description 30
- 239000004576 sand Substances 0.000 claims description 9
- 230000009189 diving Effects 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 230000001012 protector Effects 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 238000000605 extraction Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/128—Adaptation of pump systems with down-hole electric drives
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a screw pump directly driven through a large-torque submersible motor. The screw pump has the advantages that an underground speed reducer is omitted, a coupler does not bear pressure, the fault rate is low, and heat dissipation of the submersible motor is facilitated. An oil tube connecting device internally containing a check valve and a safety valve is connected with an oil tube and a wellhead through threads, the large-torque submersible direct-driving motor is supplied with power through a submersible cable, an underground sand-preventing tail tube and a sand-preventing net are arranged on the bottommost part of an oil well, a high-speed submersible screw pump body is installed between the sand-preventing net and an oil tube centering device, a coupler, a bearing device bearing assembly, a motor protector, a starting speed reducer with the few tooth difference of 12:1 and a starting reversing device are installed above the oil tube centering device and in a well liquid channel outer tube in sequence, one end of the large-torque submersible direct-driving motor is connected with the starting reversing device, and the other end of the large-torque submersible direct-driving motor is connected with the oil tube connecting device. The screw pump can be used in various oil well oil pumping operations.
Description
Technical field
The present invention relates to technical field of oil extraction equipment, specifically, it is a kind of high pulling torque submersible electric machine with oil directly-driven screw pump.
Background technology
In prior art, motor is placed in the bottommost of submersible screw pump oil extraction device, screw pump is placed in top, and the submersible electric machine with oil of down-hole is by reducer or directly drive screw pump rotor to rotate by shaft coupling.Although this technology eliminates sucker rod, because its driving-chain is longer, reducer and screw pump outside dimension are 5.5 " insufficient strength in Casing for extracting oil well, apply limited; Because of working shaft and shaft coupling work pressurized, so working shaft, shaft coupling and reducer are all easy to break down, and the life-span is short.When particularly oil well output is lower, submersible electric machine with oil heat radiation is bad, directly affects the application life of complete machine.
Summary of the invention
Object of the present invention is exactly solve the shortcoming and deficiency that exist in above-mentioned prior art, provides one not have down-hole decelerator, shaft coupling not to bear pressure, failure rate is low, and is conducive to the high pulling torque submersible electric machine with oil directly-driven screw pump of submersible electric machine with oil heat radiation.
The object of the present invention is achieved like this, and high pulling torque submersible electric machine with oil directly-driven screw pump comprises: underground sand-prevention tail pipe, sand control screens, high speed submersible screw pump, tubing centrilizer, shaft coupling, load carrier bearing assembly, motor protecter, few teeth difference 12:1 starts reducer, start reversing arrangement, well liquid passage outer tube, high pulling torque is dived oily direct driving motor, oil pipe coupling arrangement, oil pipe, oil-submersible cable, well head, junction box and surface electrical control cabinet, the oil pipe coupling arrangement of built-in ball-and-seat and safety valve and oil pipe, with being threaded between well head, oil-submersible cable one end is connected by oil tube connection device and high pulling torque oily direct driving motor of diving in down-hole, the other end is connected with surface electrical control cabinet through junction box through well head, well liquid passage outer tube is arranged in oil well, it is characterized in that: underground sand-prevention tail pipe and sand control screens are arranged on the bottom of oil well, high speed submersible screw pump is arranged between sand net and tubing centrilizer, on tubing centrilizer, successively shaft coupling is installed in well liquid passage outer tube, load carrier bearing assembly, motor protecter, few teeth difference 12:1 starts reducer, motor protecter and startup reversing arrangement, well liquid passage outer tube and shaft coupling, load carrier bearing assembly, motor protecter and high pulling torque dive between oily direct driving motor formed an annular space, high pulling torque dive oily direct driving motor one end with start reversing arrangement connect, the other end connects with oil pipe coupling arrangement.
Compared with prior art, advantage of the present invention is: 1, oil flow channel is placed in the outside of submersible electric machine with oil by the present invention, adds the flow velocity of liquid and the ability to work of equipment and reliability, improves Set under a well radiating condition.2, power transmission shaft and shaft coupling only bear pulling force and moment of torsion, there is not buckle in compression problem, improve the reliability of system.3, because screw pump staring torque is very large, be sometimes difficult to the staring torque ensureing screw pump in motor restart procedure, cause motor rotation blockage.In order to ensure smooth startup, invention increases staring torque amplifying device, by starting reversing arrangement, operation switches on and off 12:1 little tooth difference speed reducer, ensures staring torque and the normal operating conditions of screw pump, reduces reducer wearing and tearing.4, system eliminates sucker rod, improves oil extraction system efficiency, reduces energy consumption, eliminates flooring-safe risk, has saved cost of production, facilitates management.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Detailed description of the invention
embodiment 1:
Below in conjunction with accompanying drawing, the present invention is described further, and all component of the present invention are except physical dimension, all substantially identical with prior art.Start reducer 8 by underground sand-prevention tail pipe 1, sand control screens 2, high speed submersible screw pump 3, tubing centrilizer 4, shaft coupling 5, load carrier bearing assembly 6, motor protecter 7, few teeth difference 12:1 from bottom to up, start reversing arrangement 9, dive oily direct driving motor 11, oil pipe coupling arrangement 12, oil pipe 13 and well head 15 of well liquid passage outer tube 10, high pulling torque form, junction box 16 and electrical control cubicles 17 are arranged on ground.Oil pipe coupling arrangement 12 and the oil pipe 13 of built-in ball-and-seat and safety valve, with being threaded between well head 15, oil-submersible cable 14 one end is connected by oil tube connection device 12 and high pulling torque oily direct driving motor 11 of diving in down-hole, the other end is connected with surface electrical control cabinet 17 through junction box 16 through well head 15, well liquid passage outer tube 10 is arranged in oil well 18, underground sand-prevention tail pipe 1 and sand control screens 2 are arranged on the bottom of oil well 18, high speed submersible screw pump 3 is arranged between sand net 2 and tubing centrilizer 4, on tubing centrilizer 4, in well liquid passage outer tube 10, shaft coupling 5 is installed successively, load carrier bearing assembly 6, motor protecter 7, few teeth difference 12:1 starts reducer 8, motor protecter 7 and startup reversing arrangement 9, well liquid passage outer tube 10 and shaft coupling 5, load carrier bearing assembly 6, motor protecter 7 and high pulling torque are dived between oily direct driving motor 11 and are formed an annular space, high pulling torque dive oily direct driving motor 11 one end with startup reversing arrangement 9 connect, the other end connects with oil pipe coupling arrangement 12.High pulling torque in the present invention dives oily direct driving motor 11 for low-speed big submersible electric machine with oil, and shaft coupling 5 can be Hooks coupling universal coupling or long rods.
During operation, utilize oil-submersible cable 14, by the power supply in surface electrical control cabinet 17 through junction box 16, pass to down-hole high pulling torque and to dive oily direct driving motor 11, high pulling torque is dived, and the power transmission shaft of oily direct driving motor 11 rotarily drives shaft coupling 5, the rotor of submersible screw pump 3 rotates, and well liquid is given rise to ground by underground by well liquid passage outer tube 10 and high pulling torque annular space, the oil pipe 13 formed between oily direct driving motor 11 of diving.The rotating speed of submersible screw pump 3 can carry out stepless speed regulation control in surface electrical control cabinet 17.
Claims (5)
1. high pulling torque submersible electric machine with oil directly-driven screw pump, it comprises: underground sand-prevention tail pipe (1), sand control screens (2), high speed submersible screw pump (3), tubing centrilizer (4), shaft coupling (5), load carrier bearing assembly (6), motor protecter (7), start reducer (8), start reversing arrangement (9), well liquid passage outer tube (10), high pulling torque is dived oily direct driving motor (11), oil pipe coupling arrangement (12), oil pipe (13), oil-submersible cable (14), well head (15), junction box (16) and surface electrical control cabinet (17), include the oil pipe coupling arrangement (12) of ball-and-seat and safety valve and oil pipe (13), with being threaded between well head (15), oil-submersible cable (14) one end is connected by oil tube connection device (12) and high pulling torque oily direct driving motor (11) of diving in down-hole, the other end is connected with surface electrical control cabinet (17) through junction box (16) through well head (15), well liquid passage outer tube (10) is arranged in oil well (18), it is characterized in that: underground sand-prevention tail pipe (1) and sand control screens (2) are arranged on the bottom of oil well (18), high speed submersible screw pump (3) is arranged between sand net (2) and tubing centrilizer (4), on tubing centrilizer (4), shaft coupling (5) is installed in well liquid passage outer tube (10) successively, load carrier bearing assembly (6), motor protecter (7), start reducer (8), motor protecter (7) and start reversing arrangement (9), high pulling torque dive oily direct driving motor (11) one end with start reversing arrangement (9) connect, the other end connects with oil pipe coupling arrangement (12).
2. high pulling torque submersible electric machine with oil directly-driven screw pump according to claim 1, is characterized in that: well liquid passage outer tube (10) and shaft coupling (5), load carrier bearing assembly (6), motor protecter (7) and high pulling torque are dived between oily direct driving motor (11) and formed an annular space.
3. high pulling torque submersible electric machine with oil directly-driven screw pump extracting device of oil according to claim 1, is characterized in that: shaft coupling (5) is Hooks coupling universal coupling or long rods.
4. high pulling torque submersible electric machine with oil directly-driven screw pump extracting device of oil according to claim 1, is characterized in that: start reducer (8) less for few teeth difference 12:1 startup reducer.
5. high pulling torque submersible electric machine with oil directly-driven screw pump extracting device of oil according to claim 1, it is characterized in that: add staring torque amplifying device, by starting reversing arrangement (9), operation switches on and off 12:1 few teeth difference deceleration device (8) and ensures the staring torque of screw pump and normally work, and reduces reducer wearing and tearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610000477.9A CN105464630A (en) | 2016-01-04 | 2016-01-04 | Screw pump directly driven through large-torque submersible motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610000477.9A CN105464630A (en) | 2016-01-04 | 2016-01-04 | Screw pump directly driven through large-torque submersible motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105464630A true CN105464630A (en) | 2016-04-06 |
Family
ID=55602737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610000477.9A Pending CN105464630A (en) | 2016-01-04 | 2016-01-04 | Screw pump directly driven through large-torque submersible motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105464630A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801592A (en) * | 2016-12-23 | 2017-06-06 | 中国石油天然气股份有限公司 | Without bar closed loop oil extraction system |
| CN109209900A (en) * | 2017-06-30 | 2019-01-15 | 中国石油天然气股份有限公司 | A kind of suspension type submersible screw pump oil extraction device |
| CN110455449A (en) * | 2019-07-29 | 2019-11-15 | 中国海洋石油集团有限公司 | A kind of submersible motor low-frequency start stall torsion-testing apparatus |
| CN110630249A (en) * | 2018-05-30 | 2019-12-31 | 中国石油天然气股份有限公司 | Oil production monitoring system |
| CN111720098A (en) * | 2019-03-20 | 2020-09-29 | 中国石油天然气股份有限公司 | Novel oil of diving directly drives lifting device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2343382Y (en) * | 1998-05-06 | 1999-10-13 | 天津市雷达进口电泵技术开发中心 | Suspended electric oil-submersible screw pump |
| CN2399530Y (en) * | 1999-07-28 | 2000-10-04 | 张延秋 | Ring drainage electrical underwater screw pump oil extracting unit |
| EP1308624B1 (en) * | 2001-10-30 | 2005-12-07 | Grundfos a/s | Submersible motor-driven pump |
| CN201407182Y (en) * | 2009-05-14 | 2010-02-17 | 胜利油田胜利泵业有限责任公司 | Low-speed direct-drive submersible electric screw pump unit |
| CN103174642A (en) * | 2013-04-08 | 2013-06-26 | 沈阳新新石油设备有限公司 | High-power stepping motor screw pump of single-core submersible cable |
| CN104632139A (en) * | 2013-11-13 | 2015-05-20 | 中国石油天然气股份有限公司 | Rodless oil extraction device driven by underground permanent magnet linear motor |
| CN204754886U (en) * | 2015-07-10 | 2015-11-11 | 中国石油天然气股份有限公司 | Submersible motor overhead directly drives formula screw pump oil production device |
-
2016
- 2016-01-04 CN CN201610000477.9A patent/CN105464630A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2343382Y (en) * | 1998-05-06 | 1999-10-13 | 天津市雷达进口电泵技术开发中心 | Suspended electric oil-submersible screw pump |
| CN2399530Y (en) * | 1999-07-28 | 2000-10-04 | 张延秋 | Ring drainage electrical underwater screw pump oil extracting unit |
| EP1308624B1 (en) * | 2001-10-30 | 2005-12-07 | Grundfos a/s | Submersible motor-driven pump |
| CN201407182Y (en) * | 2009-05-14 | 2010-02-17 | 胜利油田胜利泵业有限责任公司 | Low-speed direct-drive submersible electric screw pump unit |
| CN103174642A (en) * | 2013-04-08 | 2013-06-26 | 沈阳新新石油设备有限公司 | High-power stepping motor screw pump of single-core submersible cable |
| CN104632139A (en) * | 2013-11-13 | 2015-05-20 | 中国石油天然气股份有限公司 | Rodless oil extraction device driven by underground permanent magnet linear motor |
| CN204754886U (en) * | 2015-07-10 | 2015-11-11 | 中国石油天然气股份有限公司 | Submersible motor overhead directly drives formula screw pump oil production device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801592A (en) * | 2016-12-23 | 2017-06-06 | 中国石油天然气股份有限公司 | Without bar closed loop oil extraction system |
| CN109209900A (en) * | 2017-06-30 | 2019-01-15 | 中国石油天然气股份有限公司 | A kind of suspension type submersible screw pump oil extraction device |
| CN110630249A (en) * | 2018-05-30 | 2019-12-31 | 中国石油天然气股份有限公司 | Oil production monitoring system |
| CN111720098A (en) * | 2019-03-20 | 2020-09-29 | 中国石油天然气股份有限公司 | Novel oil of diving directly drives lifting device |
| CN110455449A (en) * | 2019-07-29 | 2019-11-15 | 中国海洋石油集团有限公司 | A kind of submersible motor low-frequency start stall torsion-testing apparatus |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160406 |