CN201636024U - Low-rotary-speed and large-displacement electric submersible screw pump oil-production system - Google Patents
Low-rotary-speed and large-displacement electric submersible screw pump oil-production system Download PDFInfo
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- CN201636024U CN201636024U CN2010200044651U CN201020004465U CN201636024U CN 201636024 U CN201636024 U CN 201636024U CN 2010200044651 U CN2010200044651 U CN 2010200044651U CN 201020004465 U CN201020004465 U CN 201020004465U CN 201636024 U CN201636024 U CN 201636024U
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Abstract
The utility model discloses a low-rotary-speed and large-displacement electric submersible screw pump oil-production system comprising a screw pump. The screw pump comprises a stator and a rotor, wherein the rotor is connected with the output shaft of a speed reducer; the input shaft of the speed reducer is connected with a submersible motor; the stator is provided with a liquid inlet and a liquid outlet; the liquid outlet is communicated with an oil pipe; and the motor is a submersible motor with six poles or above. The submersible motor with six poles or above can be matched with a single-pole planetary speed reducer; under the condition of power frequency, the rotary speed of the screw pump is reduced to below 200rpm and the service life of the screw pump is greatly prolonged; and the oil-production system is more suitable for the working characteristic of the screw pump, and particularly applicable to the application environment of ocean heavy oil field with big casings and large displacement.
Description
Technical field
The utility model relates to a kind of oil field equipment, and particularly a kind of slow-speed of revolution large-discharge electric moves oil-submersible screw-pump oil production system.
Background technique
At present, general 4 utmost point motors that adopt of the screw submerged pump of use move through deceleration helical rotor pump mode, and generally more than 300rpm, the screw pump life-span is general short partially for the rotating speed of screw pump during power frequency 50Hz running.The part oil field has increased financial cost greatly in order to reduce the mode that the screw pump rotating speed has adopted the frequency variator traction.The offshore production platform space is narrow and small, and can not satisfy each mouthful well all has enough space mounting frequency variators.
Domestic electric submersible screw pump generally adopts the 1:2 structural formula at present.Vibration was big when this helical rotor pump moved.Discharge capacity surpasses 150m
3The pump life-span shortens significantly after the/d, can not satisfy the field produces needs, increases the field produces cost.Reduce viscous crude field exploitation economic benefit greatly.
The model utility content
The utility model provides a kind of slow-speed of revolution large-discharge electric to move oil-submersible screw-pump oil production system for solving the technical problem that exists in the known technology, this system can be with the speed drop of screw pump under power frequency 50Hz to 200rpm, satisfy of the requirement of homemade screw pump to rotating speed, reduce and damage, effectively prolong its working life, improve viscous crude field exploitation economic benefit.
The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is: a kind of slow-speed of revolution large-discharge electric moves oil-submersible screw-pump oil production system, comprise screw pump, described screw pump comprises stator and rotor, described rotor is connected with the output shaft of retarder, described input shaft of speed reducer connects oil-submersible motor, described stator is provided with liquid entering hole and liquid outlet, and described liquid outlet and oil pipe are communicated with, and described motor is sextupole or the above multipole oil-submersible motor of sextupole.
Described screw pump is that 2:3 revolves string formula screw pump.
Described stator adopts segmental structure.
Described liquid outlet is provided with the counter-rotating snubber that is connected with described oil pipe.
Advantage and the good effect that the utlity model has are: adopt the above oil-submersible motor of sextupole or sextupole can mate the single-stage planetary retarder, be reduced to below the 200rpm at the rotating speed of power frequency condition with screw pump, can increase substantially the life-span of screw pump; Single-stage planetary reducer structure compactness, reliable performance; Oil-submersible motor selects for use diameter to be not less than the motor radiating that helps of 187mm; Off-centre was little when 2:3 revolved the running of string formula screw pump, the vibrations of effectively reduction system of proportioning pump shock-absorber; Therefore, this system reliability height, the life-span is long.The level Four oil-submersible motor serial connection single-stage planetary retarder that its performance characteristics is better than using at present removes to drag the oil production system of 1:2 structural formula screw pump, more is applicable to present homemade screw rod pump performance characteristic; The applied environment of the big sleeve pipe of particularly suitable ocean viscous crude field, big discharge capacity.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model screw pump part.
Among the figure: 2, liquid entering hole, 3, the capsule protector, 4, the thrust protector, 5, retarder, 6, protector, 7, oil-submersible motor, 8, the counter-rotating snubber, 9, vibration damper, 10, equalizing orifice, 11, screw pump, 12, rotor, 13, coupling, 14, stator.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1～Fig. 2, a kind of slow-speed of revolution large-discharge electric of the utility model moves oil-submersible screw-pump oil production system, comprise screw pump 11, screw pump 11 comprises stator 14 and rotor 12, screw pump rotor 12 is connected with the output shaft of retarder 5, and the input shaft of retarder 5 connects oil-submersible motor 7, and screw pump stator 14 is provided with liquid entering hole 2 and liquid outlet, liquid outlet and oil pipe are communicated with, and above-mentioned oil-submersible motor 7 is sextupole or the above multipole oil-submersible motor of sextupole.Capsule protector 3 and thrust protector 4 are installed on the retarder 5, protector 6 is installed on the oil-submersible motor 7, protector 6 links to each other with retarder 5, and linking to each other with oil-submersible motor protector 6 at retarder 5 partly is provided with mechanical seal and an equalizing orifice 10; Three or more pump housing vibration damper 9 is installed on the screw pump 11.
In order to prolong the life-span of screw pump 11, reduce its power consumpiton, screw pump 11 adopts 2:3 to revolve the string formula; In order to prevent the screw pump counter-rotating not fluid of dry grinding, at the liquid outlet of screw pump counter-rotating snubber 8 is installed, connect oil pipe on the counter-rotating snubber 8; In order to improve the injecting glue quality, prolong the life-span of screw pump 11, stator 14 adopts segmental structure.
For the ease of oil-submersible motor 7 heat radiations, can select for use diameter to be not less than 187mm's.
Present embodiment adopts the sextupole oil-submersible motor, and the output speed 980rpm of power frequency 50Hz, retarder 5 select planetary pinion single-stage slowing-down structure for use, and reduction speed ratio is 5: 1; The output shaft of retarder 5 is connected by coupling 13 with rotor 12.Oil-submersible motor 7 rotates during work, through retarder 5 deceleration rear driving 2:3 structural formula screw pumps 11, makes it under power frequency 50Hz condition, and speed drop is to 196rpm, and well liquid enters screw pump through liquid sucting port 2, flows to oil pipe through counter-rotating snubber 8 again, is drawn into ground at last.Whole system hangs on the down-hole by oil pipe, and sextupole oil-submersible motor 7 is by retarder 5 deceleration screw pump oil productions.Oil-submersible motor also can adopt the above multipole oil-submersible motor of sextupole, mates the retarder of corresponding reduction speed ratio, also can reach to make the screw pump speed drop to 200rpm, but the Economy of system can be poor than present embodiment.
The working speed scope that adopts the sextupole oil-submersible motor to be more suitable for mating homemade screw pump adopts large diameter sextupole oil-submersible motor 7, increases the flow velocity of well liquid on the motor surface, is beneficial to motor radiating, effectively prolongs electrical machinery life.Adopt 2:3 to revolve string formula screw pump, eccentric shaking when reducing the pump running, and reduce to the vibrations of screw pump 11 minimum by outside pump, installing a plurality of pump housing vibration dampers 9 additional, the adverse effect that vibrations bring retarder 5, sextupole oil-submersible motor 7 when reducing system's running, thereby improve the life-span of whole system, particularly prolong discharge capacity at 200m
3The life-span of the whole system under the above condition of/d.
The utility model mainly contains following advantage with respect to prior art:
1) adopts the above multipole oil-submersible motor of sextupole or sextupole, effectively reduce the rotating speed of whole system, reduced the heat dissipating capacity of motor under the big sleeve pipe condition, can realize the big discharge capacity of this system by the high power oil-submersible motor; 2) because the above multipole oil-submersible motor output speed of sextupole or sextupole is no more than 980rpm, therefore only need the single-stage planetary retarder just can with the screw pump speed drop to 200rpm, effectively improve screw pump service life; Avoid employing twin-stage or multi-stage speed reducer, improved reliability and reduced cost, also avoided installing additional the problem that financial cost increases and the small space frequency variator can't be installed that frequency variator brings to marine oil field; 3) adopt 2:3 to revolve string formula screw pump, cooperate a plurality of pump housing vibration dampers, reduced the vibrations of whole system, help improving the life-span of this system, reduce the power consumpiton of pump; This system's simple installation is fit to offshore oilfield hole condition and operation installation environment, discharge capacity scope 150m
3/ d～230m
3/ d, 800 meters～1000 meters of lifts.
Although in conjunction with the accompanying drawings preferred embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away under the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection domain of the present utility model.
Claims (4)
1. a slow-speed of revolution large-discharge electric moves oil-submersible screw-pump oil production system, comprise screw pump, described screw pump comprises stator and rotor, described rotor is connected with the output shaft of retarder, described input shaft of speed reducer connects oil-submersible motor, and described stator is provided with liquid entering hole and liquid outlet, and described liquid outlet and oil pipe are communicated with, it is characterized in that described motor is sextupole or the above multipole oil-submersible motor of sextupole.
2. slow-speed of revolution large-discharge electric according to claim 1 moves oil-submersible screw-pump oil production system, it is characterized in that, described screw pump is to revolve string formula screw pump at 2: 3.
3. slow-speed of revolution large-discharge electric according to claim 1 moves oil-submersible screw-pump oil production system, it is characterized in that, described stator adopts segmental structure.
4. slow-speed of revolution large-discharge electric according to claim 1 moves oil-submersible screw-pump oil production system, it is characterized in that, described liquid outlet is provided with the counter-rotating snubber that is connected with described oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200044651U CN201636024U (en) | 2010-01-19 | 2010-01-19 | Low-rotary-speed and large-displacement electric submersible screw pump oil-production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200044651U CN201636024U (en) | 2010-01-19 | 2010-01-19 | Low-rotary-speed and large-displacement electric submersible screw pump oil-production system |
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| Publication Number | Publication Date |
|---|---|
| CN201636024U true CN201636024U (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200044651U Expired - Fee Related CN201636024U (en) | 2010-01-19 | 2010-01-19 | Low-rotary-speed and large-displacement electric submersible screw pump oil-production system |
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| CN (1) | CN201636024U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255404A (en) * | 2011-07-28 | 2011-11-23 | 天津市百成油田采油设备制造有限公司 | Submersible motor with super power and super hole diameter |
| CN105422053A (en) * | 2015-12-29 | 2016-03-23 | 中国石油天然气股份有限公司 | Huff-and-puff oil production device with submersible directly-driven screw pump |
| CN105422065A (en) * | 2015-12-29 | 2016-03-23 | 中国石油天然气股份有限公司 | Huff-and-puff oil production device with electric submersible reciprocating pump |
-
2010
- 2010-01-19 CN CN2010200044651U patent/CN201636024U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255404A (en) * | 2011-07-28 | 2011-11-23 | 天津市百成油田采油设备制造有限公司 | Submersible motor with super power and super hole diameter |
| CN105422053A (en) * | 2015-12-29 | 2016-03-23 | 中国石油天然气股份有限公司 | Huff-and-puff oil production device with submersible directly-driven screw pump |
| CN105422065A (en) * | 2015-12-29 | 2016-03-23 | 中国石油天然气股份有限公司 | Huff-and-puff oil production device with electric submersible reciprocating pump |
| CN105422065B (en) * | 2015-12-29 | 2018-02-02 | 中国石油天然气股份有限公司 | A kind of oil-submersible electric reciprocating pump oil extraction equipment using taking in and sending out |
| CN105422053B (en) * | 2015-12-29 | 2018-03-09 | 中国石油天然气股份有限公司 | A kind of latent oil directly-driven screw pump oil extraction equipment using taking in and sending out |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20180119 |