CN2737985Y - Multi-electric pump parallel system - Google Patents
Multi-electric pump parallel system Download PDFInfo
- Publication number
- CN2737985Y CN2737985Y CN 200420088836 CN200420088836U CN2737985Y CN 2737985 Y CN2737985 Y CN 2737985Y CN 200420088836 CN200420088836 CN 200420088836 CN 200420088836 U CN200420088836 U CN 200420088836U CN 2737985 Y CN2737985 Y CN 2737985Y
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- CN
- China
- Prior art keywords
- electric pump
- oil
- submersible
- submersible electric
- parallel
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- Expired - Lifetime
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Abstract
The utility model provides a multi-submersible electric pump parallel system used in the oil well with bigger sleeve tube diameter and especially in offshore oil field, mainly comprising a submersible electric pump parallel device 4, a clear submersible electric pump branch circuit 18 and a short submersible electric pump branch circuit 20. Oil pipes 1, 10, venting valves 2, 11 and the submersible electric pump parallel device 4 are connected from top to bottom, and the submersible electric pump branch circuits are connected in parallel under the submersible electric pump parallel device 4. For oil wells with bigger changes of producing liquid surfaces, the submersible electric pumps with different displacements and different delivery lifts can be provided to adapt the change of the producing liquid surface of the oil well, which can not only extend on one trip working life of the electric pump, but produce the buried oil reasonably to reduce the loss. For oil wells which may produce sands, a set of sand prevention electric pump with smaller displacement can be provided to avoid the premature failure of the electric pump caused by producing sands and also guarantee the well yield under normal condition.
Description
Technical field:
The utility model relates to a kind of many submersible electric pumps parallel system, mainly is applicable to the oil well that casing diameter is bigger, is particularly useful for offshore oilfield.
Background technique:
Submersible electric pump is one of main oil production equipment in oil field, and it is installed in the oil recovery well, works to several kms place at underground hundreds of rice.Its mounting cost is higher, oil field especially at sea, between its mounting cost and installation period production loss often submersible electric pump itself be worth, several times to tens times, therefore prolonging the operating life of submersible electric pump in the down-hole has remarkable economic efficiency.
Changes in reservoir such as now, a cover submersible electric pump only is installed in a bite oil well, its proper functioning life-span of once going into the well generally is about 1 year to a year and a half, and is husky more if the down-hole oil reservoir goes out, and the decline of production liquid level is too much all can cause the electric pump premature damage and carry well.In addition, because each specification oil-immersed pump all has its own output and lift Changing Pattern, when underground oil reservoir changed, often branch caused the electric pump oil of recovery of subterranean fully, makes oil well yield be subjected to greater loss.
The now general method that adopts frequency control of motor speed is adjusted the output of electric pump, but the output of electric pump is directly proportional with frequency, square being directly proportional of the lift of electric pump and frequency.And in actual oil well, when formation pressure decline causes producing liquid level decline, need electric pump to improve its lift by improving frequency, and oil well output needs adjustment downwards, produces the stable of liquid level with assurance.But after electric pump improves frequency, it also can increase in the output of rated operation point, just in time opposite with actual demand, after will forcing electric pump to improve frequency, it also can increase in the output of rated operation point, just in time opposite with actual demand, will force electric pump to be worked departing under the rated operation point, reduce the efficient and the electric pump operating life of system.In addition, adopt frequency control of motor speed need use frequency variator, its price is more expensive and safeguard trouble, and floor space is also bigger, and especially at sea the oil field is difficult to generally promote.
In addition, some may blowings maybe need to measure downhole parameters and the oil well that need take measures in, adopt the Y joint, in its outlet one-way valve and eduction valve are installed, an inlet connects oil pipe and blanking plug in two inlet, another inlet connects Electric Submersible Pump Unit, only can use a cover submersible electric pump.But this Placement implements to provide reliable basis for many electric pumps parallel system.
Technology contents
The purpose of this utility model is to provide a kind of can effectively solve the problem of using a cover submersible electric pump to occur, make the operating life of once going into the well to prolong more than one times, can adapt to many electric pumps parallel system of the variation of subsurface deposit by the submersible electric pump of different parameters is installed simultaneously.
The utility model is achieved in that and comprises oil pipe 1, eduction valve 2, oil-submersible cable 3, submersible electric pump device 4 in parallel, smooth submersible electric pump branch road 18, short submersible electric pump branch road 20, this device is connected with oil pipe 1,10 from top to down, eduction valve 2,11, submersible electric pump device 4 in parallel, oil-submersible cable 3,19,21 is mounted on these parts next doors respectively, below submersible electric pump device 4 in parallel, be connected in parallel to the submersible electric pump branch road.
The utility model also adopts following technological scheme:
Below submersible electric pump device 4 in parallel; be connected in parallel to long and short two submersible electric pump branch roads 18,20; on short submersible electric pump branch road 20; be connected with oil-immersed pump 5 from top to bottom; latent oil separator 6; latent oil guard device 7; oil-submersible motor 8 and down-hole thermometric depressor 9 and oil-submersible cable 21; on long submersible electric pump branch road 18, be connected with oil pipe 10 from top to bottom, eduction valve 11, one-way valve 12; oil-immersed pump 13; latent oil separator 14, dive oil guard device 15, oil-submersible motor 16 and down-hole thermometric manometer 17 and oil-submersible cable 21.
Submersible electric pump device 4 in parallel is made up of Y joint 401, outlet 402, inlet 403,406, one-way valve 404, oil-immersed pump counter flange 405, inlet 403 directly communicates with outlet 402, another inlet 406 communicates with outlet 402 bypasses, and this inlet 406 is equipped with one-way valve 404 and oil-immersed pump counter flange 405.
Long submersible electric pump branch road 18 is connected and exports on the 402 direct inlet communicating 403, and short submersible electric pump branch road 20 is connected on the inlet 406 that one-way valve 404 and oil-immersed pump counter flange 405 are housed.
Have wire way 4011 on submersible electric pump device 4 in parallel, current supply cable passes.
One-way valve 404 on inlet 406 and the one-way valve 12 on the longer submersible electric pump branch road 18 all adopt two string structures, and it is to be threaded togather by two one-way valve tubes.
Advantage of the present utility model is: for the bigger oil well of production level change, the submersible electric pump that can dispose different displacements and different lifts is to adapt to the oil well production liquid level variation, the oil of recovery of subterranean reasonably when prolonging the operating life of once going into the well of electric pump reduces and only uses a cover production loss that submersible electric pump caused.For going out husky oil well, outside the normal configuration submersible electric pump, can also dispose the less sand prevention electric pump of a cover discharge capacity, so promptly can avoid causing the electric pump premature damage owing to go out sand, can guarantee oil well output under normal circumstances again.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of submersible electric pump device 4 in parallel.
Concrete enforcement:
As shown in Figure 1; with two electric pump parallel systems is example; because it is a typical case of many electric pumps parallel system; it is achieved through the following technical solutions; in oil well; be connected with oil pipe 1 from top to down; 10; eduction valve 2; 11, submersible electric pump device 4 in parallel, oil-submersible cable 3; 19; 21 are mounted on these parts next doors respectively; below submersible electric pump device 4 in parallel; be connected in parallel to length; short two submersible electric pump branch roads 18; 20, on short submersible electric pump branch road 20, be connected with oil-immersed pump 5 from top to bottom; latent oil separator 6; latent oil guard device 7, oil-submersible motor 8 and down-hole thermometric depressor 7 and oil-submersible cable 21 are connected with oil pipe 10 from top to bottom on long submersible electric pump branch road 18; eduction valve 11; one-way valve 12, oil-immersed pump 13, the oil separator 14 of diving; latent oil guard device 15, oil-submersible motor 16 and down-hole thermometric manometer 17 and oil-submersible cable 21.
Submersible electric pump device 4 in parallel is made up of Y joint 401, outlet 402, inlet 403,406, one-way valve 404 oil-immersed pump counter flanges 405, inlet 403 directly communicates with outlet 402, another inlet 406 communicates with outlet 402 bypasses, and this inlet 406 is equipped with one-way valve 404 and oil-immersed pump counter flange 405.
Long submersible electric pump branch road 18 is connected and exports on the 402 direct inlet communicating 403, and short submersible electric pump branch road 20 is connected on the inlet 406 that one-way valve 404 and oil-immersed pump counter flange 405 are housed.
Have wire way 4011 on submersible electric pump device 4 in parallel, current supply cable passes.
When the Electric Submersible Pump Unit on the shorter branch road 20 of needs startup; the electric energy running that oil-submersible motor 8 is carried by oil-submersible cable 21; it drives oil-immersed pump 5 runnings by dive oil guard device 7 and latent oil separator 6; the down-hole oil is sealed by the pressure effect on its top by the inlet of the oil separator 6 of diving through the one-way valve 404 on the submersible electric pump branch road 20; when avoiding the oil of conveying on shorter submersible electric pump branch line 20, on longer submersible electric pump branch line 18, leak.
If need to start Electric Submersible Pump Unit on the longer submersible electric pump branch road 18, its situation is the same with shorter submersible electric pump branch road 20.
If need start two cover submersible electric pumps simultaneously, then the submersible electric pump 16,8 on the long and short two bar branch road 18,20 is worked simultaneously, and the while is transfer oil earthward.Adopt the parallel system of three covers or more cover electric pumps similar with two electric pump parallel systems.It realizes that by submersible electric pump device 4 in parallel plural parallel stage connects.In this system, bottom that grade is identical with the Placement of two electric pump interacted systems, submersible electric pump branch road short among in the above at different levels is also identical with two electric pump connected systems, and long submersible electric pump branch road replaces Electric Submersible Pump Unit on this branch road with oil pipe.Directly be connected with the relief valve that next stage submersible electric pump device in parallel exports.If when needing to start the Electric Submersible Pump Unit on the shorter branch road of bottom that grade, oil enters the device outlet in parallel of bottom that grade, the device in parallel along the longer submersible electric pump branch road of upper level to the upper level submersible electric pump by the submersible electric pump lifting, the rest may be inferred, after oil pipe is transported to ground.Meanwhile other is equipped with on each branch road of Electric Submersible Pump Unit, owing to the effect of one-way valve is sealed.
18 to dispose discharge capacity be 200m on the longer submersible electric pump branch road in Fig. 1
3/ d, lift are the Electric Submersible Pump Unit of 1000m, and disposing discharge capacity on shorter submersible electric pump branch road 20 is 100m
3/ d, lift are the Electric Submersible Pump Unit of 1300m.This pair electric pump parallel system connects oil pipe 1 from top to bottom, eduction valve 2 and submersible electric pump device 4 in parallel, and oil-submersible cable 3 is attached to their next doors.Shown in the bitter edible plant, submersible electric pump device 4 in parallel, mainly by Y joint 401, one-way valve 404 and oil-immersed pump counter flange 405 are formed, and it has 402 and two inlets 403,406 of an outlet.Its middle outlet 402 and oil-immersed pump counter flange 405 are formed.Below submersible electric pump device 4 in parallel, be parallel with two electric pump branch roads.Connecting on the inlet 403 on the long submersible electric pump branch line 18, top-down connection is by oil pipe 10, eduction valve 11, one-way valve 12, oil-immersed pump 1), the oil separator 14 of diving, oil guard device 15 oil-submersible motors 16 of diving, down-hole thermometric manometer 17 is formed; On shorter submersible electric pump branch road 20, oil-immersed pump 5 is housed from top to bottom, the oil separator 6 of diving, dive oil guard device 7, oil-submersible motor 8 and down-hole thermometric manometer 9.
On two branch roads, oil-submersible cable 19,21 is drawn from oil-submersible motor top, makes progress along branch road, passes the wire way 4011 on the submersible electric pump device 4 in parallel, leads to ground along oil pipe 1 again.
In order to guarantee each branch road sealability, one-way valve 404 on inlet 406 and the one-way valve 12 on the longer submersible electric pump branch road 18 all adopt two string structures (Fig. 2), and it is to be threaded togather by two one-way valve tubes.
When being installed on, this pair electric pump parallel system requires capacity rating position 200m
3/ d when rated head is the oil well of 1000m, starts that capacity rating is 200m on the longer submersible electric pump branch road
3/ d, rated head is the submersible electric pump of 1000m, the down-hole oil is by inlet process oil-immersed pump 13 liftings of the oil separator 14 of diving, by submersible electric pump device 4 outlets in parallel, be transported to ground along eduction valve 2 and oil pipe 1, meanwhile, the one-way valve 404 on submersible electric pump device 4 in parallel be subjected to its top pressure effect and seal.When the formation pressure deficiency, produce liquid level and descend for a long time, need change lift into 1300m, discharge capacity changes 100m into
3During/d, the submersible electric pump on the longer submersible electric pump branch road, when lift is 1300m, discharge capacity has only 30m
3During/d, at this moment need to turn off the electric pump of longer submersible electric pump branch road 18, start the submersible electric pump 5 on the shorter submersible electric pump branch road 20, make output bring up to 100m3/d, continue to produce.
Claims (6)
1, a kind of many electric pumps parallel system, comprise oil pipe (1), eduction valve (2), oil-submersible cable (3), submersible electric pump device (4) in parallel, long submersible electric pump branch road (18), short submersible electric pump branch road (20), it is characterized in that: this device is connected with oil pipe (1), (10) from top to down, eduction valve (2), (11), submersible electric pump device (4) in parallel, oil-submersible cable (3), (19), (21) are mounted on these parts next doors respectively, in submersible electric pump device in parallel (4) below, be connected in parallel to the submersible electric pump branch road.
2; a kind of many electric pumps parallel system according to claim 1; it is characterized in that: in submersible electric pump device in parallel (4) below; be connected in parallel to length; short two submersible electric pump branch roads (18); (20); on short submersible electric pump branch road (20); be connected with oil-immersed pump (5) from top to bottom; latent oil separator (6); latent oil guard device (7); oil-submersible motor (8) and down-hole thermometric manometer (9) and oil-submersible cable (21); on long submersible electric pump branch road (18), be connected with oil pipe (10) from top to bottom; eduction valve (11); one-way valve (12), oil-immersed pump (13), the oil separator (14) of diving; latent oil guard device (15), oil-submersible motor (16) and down-hole thermometric manometer (17) and oil-submersible cable (21).
3, a kind of many electric pumps parallel system according to claim 1, it is characterized in that: submersible electric pump device in parallel (4) is made up of Y joint (401), outlet (402), inlet (403), (406), one-way valve (404), oil-immersed pump counter flange (405), inlet (403) directly communicates with outlet (402), another inlet (406) communicates with outlet (402) bypass, and this inlet (406) is equipped with one-way valve (404) and oil-immersed pump counter flange (405).
4, a kind of many electric pumps parallel system according to claim 1, it is characterized in that: long submersible electric pump branch road (18) is connected and exports on (402) direct inlet communicating (403), and short submersible electric pump branch road (20) is connected on the inlet (406) that one-way valve (404) and oil-immersed pump counter flange (405) are housed.
5, a kind of many electric pumps parallel system according to claim 3 is characterized in that: have wire way (4011) on submersible electric pump device in parallel (4), current supply cable passes.
6, a kind of many electric pumps parallel system according to claim 1, it is characterized in that: one-way valve (404) on the inlet (406) and the one-way valve (12) on the longer submersible electric pump branch road (18) all adopt two string structures, and it is to be threaded togather by two one-way valve tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420088836 CN2737985Y (en) | 2004-08-24 | 2004-08-24 | Multi-electric pump parallel system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420088836 CN2737985Y (en) | 2004-08-24 | 2004-08-24 | Multi-electric pump parallel system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2737985Y true CN2737985Y (en) | 2005-11-02 |
Family
ID=35347895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420088836 Expired - Lifetime CN2737985Y (en) | 2004-08-24 | 2004-08-24 | Multi-electric pump parallel system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2737985Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265244A (en) * | 2014-09-14 | 2015-01-07 | 哈尔滨理工大学 | Underground submersible multistage lifting type pumping system and configuration method thereof |
| CN104747136A (en) * | 2015-01-12 | 2015-07-01 | 成都久井抽前瞻科技有限公司 | Oil pumping method adopting multistage oil pumping device |
| CN109312614A (en) * | 2016-04-24 | 2019-02-05 | 通用电气能源油田技术公司 | Automatic Y type tool |
| CN111997577A (en) * | 2020-03-25 | 2020-11-27 | 中国海洋石油集团有限公司 | Heat-insulation type canned electric submersible pump injection-production integrated tubular column structure and technological method |
| CN114814175A (en) * | 2021-01-28 | 2022-07-29 | 中国石油天然气股份有限公司 | Three-dimensional simulation experiment device and method for foam oil |
-
2004
- 2004-08-24 CN CN 200420088836 patent/CN2737985Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265244A (en) * | 2014-09-14 | 2015-01-07 | 哈尔滨理工大学 | Underground submersible multistage lifting type pumping system and configuration method thereof |
| CN104747136A (en) * | 2015-01-12 | 2015-07-01 | 成都久井抽前瞻科技有限公司 | Oil pumping method adopting multistage oil pumping device |
| CN109312614A (en) * | 2016-04-24 | 2019-02-05 | 通用电气能源油田技术公司 | Automatic Y type tool |
| CN111997577A (en) * | 2020-03-25 | 2020-11-27 | 中国海洋石油集团有限公司 | Heat-insulation type canned electric submersible pump injection-production integrated tubular column structure and technological method |
| CN111997577B (en) * | 2020-03-25 | 2022-05-20 | 中国海洋石油集团有限公司 | Injection-production integrated tubular column structure of heat-insulation canned electric submersible pump and technological method |
| CN114814175A (en) * | 2021-01-28 | 2022-07-29 | 中国石油天然气股份有限公司 | Three-dimensional simulation experiment device and method for foam oil |
| CN114814175B (en) * | 2021-01-28 | 2024-04-30 | 中国石油天然气股份有限公司 | Foam oil three-dimensional simulation experiment device and method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140824 Granted publication date: 20051102 |