CN206053906U - Submerged electric oil pump well lost circulation prevention well washing apparatus - Google Patents
Submerged electric oil pump well lost circulation prevention well washing apparatus Download PDFInfo
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- CN206053906U CN206053906U CN201621039294.XU CN201621039294U CN206053906U CN 206053906 U CN206053906 U CN 206053906U CN 201621039294 U CN201621039294 U CN 201621039294U CN 206053906 U CN206053906 U CN 206053906U
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- Prior art keywords
- well
- lost circulation
- circulation prevention
- oil pump
- washing apparatus
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Abstract
This utility model is submerged electric oil pump well lost circulation prevention well washing apparatus, installed in the lower section of Electric Submersible Pump Unit motor, realizes lost circulation prevention clean-out service.This device includes cup packing block and inflatable packer, and upper communicating pipe, cup packing block, inflatable packer, ball-and-seat and lower communicating tube pass sequentially through threaded connection from top to bottom.This device is arranged on the lower section of motor in Electric Submersible Pump Unit, flushing fluid is made to be forced to change flow direction, enter in Electric Submersible Pump Unit in centrifugal pump, then flow through, the debris such as the sand scale in centrifugal pump in Electric Submersible Pump Unit are carried away in flow process, realize the purpose of lost circulation prevention well-flushing, it is ensured that well washing effect.Avoid, effectively reduce production cost, improve productivity effect.
Description
Technical field
This utility model is related to the well washing apparatus of petroleum industry submerged electric oil pump well, particularly submerged electric oil pump well lost circulation prevention well-flushing
Device, installed in the lower section of Electric Submersible Pump Unit motor, realizes lost circulation prevention clean-out service.
Background technology
In the daily production of submerged electric oil pump well Jing often because have a power failure, conduit wiring piercing the problems such as and by forced-stopping machine, work as downtime
More than 1 hour, oil sand in pipe well liquid, dirt of centrifugal pump and pump will deposit, if now directly starting shooting, it is easy to because from
The operating of heart pump guide vane wheel is obstructed and causes pump card, causes revolution electric current to raise and causes burn-down of electric motor and well of lying.To prevent pump card from lying
Well, it is necessary to which first well-flushing is started shooting again, thoroughly removes the debris such as the sand of deposition, dirt in submersible electric pump.Open yet with long-term high liquid measure
Adopt, the stratum fluid supply capacity of some wells declines, and leakage degree is larger, and flushing fluid is leak in stratum in a large number, it is impossible to normally returned out
Ground, it is impossible to which the sand scale debris in submersible electric pump are taken out of, it is impossible to thoroughly solve the problems, such as pump card of starting shooting.If initiation is lain, well can only enter
Row pump detection and workover is constructed, and removes debris, it will produce higher maintenance and Master Cost.
There is no at present special well-flushing lost circulation prevention device in submerged electric oil pump well, and the well-flushing lost circulation prevention used on rod-pumped well
Instrument is not suitable for used in electric pump well：Reason one be its adopt leather cup seal as unique sealing tool, leather cup be enclosed in
During entering under tubing string, its rubber bowl body is worn and torn with internal surface of sleeve pipe, and sealing property is deteriorated, poorly sealed during well-flushing, it is impossible to reach
The purpose of lost circulation prevention well-flushing.Reason two is that when submerged electric oil pump well is normally produced, liquid measure is big, Jing Wengao, can aggravate the carbon of leather cup envelope
Change, lose sealing function, reduction of service life, be not suitable for submerged electric oil pump well life-time service.Above-mentioned submerged electric oil pump well flushing fluid leakage
The problems demand of mistake is solved.
The content of the invention
In order to solve the above problems, this utility model provides submerged electric oil pump well lost circulation prevention well washing apparatus, needs in electric pump well
During reacting cycle well-flushing, flushing fluid is made to change flow direction after reaching below Electric Submersible Pump Unit, by the sand scale debris in centrifugal pump
Take ground out of, solve the problems, such as sand scale holddown, start pump card, it is to avoid well of lying, reduce the maintenance cost of submerged electric oil pump well and produce into
This.
Technical solution of the present utility model is：Submerged electric oil pump well lost circulation prevention well washing apparatus include cup packing block and expansion
Formula packer was opened, upper communicating pipe, cup packing block, inflatable packer, ball-and-seat and lower communicating tube are passed sequentially through from top to bottom
Threaded connection, this device are arranged on the lower section of motor in Electric Submersible Pump Unit.
Remarkable result of the present utility model is：When submerged electric oil pump well is normally produced, the packing element of inflatable packer keeps
Contraction state, does not affect the normal feed liquor of well liquid, lifting, production.When well-flushing is needed, flushing fluid is entered from oil jacket annular space, Jing
After upper communicating pipe is directed on ball-and-seat into after this device, because the effect of ball-and-seat can not be descending, what flushing fluid was produced
Expansion pressure expands the packing element of inflatable packer, further seals oil jacket annular space, prevents flushing fluid to formation leakage.Wash
Well liquid is forced to change flow direction, and the separator in Jing Electric Submersible Pump Units enters into centrifugal pump in Electric Submersible Pump Unit
It is interior, then flow through, by debris such as the sand scales in centrifugal pump in Electric Submersible Pump Unit in flow process
Carrying is gone out, and realizes the purpose of lost circulation prevention well-flushing, it is ensured that well washing effect.Avoid
The start pump card of cause is lain well problem, effectively reduces production cost, improves productivity effect, with good application effect.
Description of the drawings
Accompanying drawing 1 is structural representation of the present utility model.
Specific embodiment
Below in conjunction with detailed description this utility model, protection domain of the present utility model is not limited, it is all using this practicality
The improvement that new mentality of designing draws belongs to protection category of the present utility model.
Referring to Fig. 1, submerged electric oil pump well lost circulation prevention well washing apparatus include cup packing block 2 and inflatable packer 3, upper connection
Pipe 1, cup packing block 2, inflatable packer 3, ball-and-seat 4 and lower communicating tube 5 pass sequentially through threaded connection from top to bottom, incite somebody to action this
Device is arranged on the lower section of motor in Electric Submersible Pump Unit.The valve ball of ball-and-seat 4 is located at the top of valve seat, makes the flushing fluid of top
Can not flow downward, flushing fluid can be forced the packing element spreading of inflatable packer 3, make to return on flushing fluid into oil jacket ring
Sky, enters in oil-submersible centrifugal pump pump via the separator in Electric Submersible Pump Unit, then into oil pipe on pump, by latent oil electricity
In pump assembly, in centrifugal pump, the debris such as sand scale of deposition take ground out of.Cup packing block 2 is that top external diameter is big, lower outer diameter is little,
The rim of a bowl cone seal block upward, the depth-set of top the rim of a bowl in 30cm-40cm, the taper of bottom bowl body be set in 15 °-
Between 20 °.Central canal is provided with cup packing block 2, the top of central canal was threadedly coupled with upper communicating pipe 1, bottom is sealed with expansion
It is threadedly coupled every device 3.Be equipped with liquid flow hole and external screw thread on the body of upper communicating pipe 1 and lower communicating tube 5, upper communicating pipe 1 with it is latent
The punctate opacity of the cornea seat threaded connection of oily electric pump unit motor；Lower communicating tube 5 is threadedly coupled with the hanging basket of Electric Submersible Pump Unit.
This device is arranged on the lower section of motor, and when normally producing, oil well liquid-producing Jing lower communicating tubes 5, ball-and-seat 4, entrance are expanded
In the central canal of formula packer 3, the liquid flow hole for then reaching upper communicating pipe 1 via cup packing block 2 enter into this device with
On oil, in casing annulus.By separator, enter in the centrifugal pump of submersible electric pump, ground is lifted out by centrifugal pump.
During well-flushing, after flushing fluid enters oil, casing annulus, drew in the central canal of upper communicating pipe 1, cup packing block 2
The central canal of lower entrance inflatable packer 3 is led, after reaching ball-and-seat 4, ball-and-seat 4 blocks flushing fluid cannot be descending, while
Make its packing element expand and further seal oil jacket annular space in the upper and lower pressure reduction that produces of inflatable packer 3, flushing fluid is prevented to ground
Layer leakage, flushing fluid are forced to return oil jacket annular space, and the separator in Jing Electric Submersible Pump Units is entered in Electric Submersible Pump Unit
Centrifugal pump in, then flow through, realize the purpose of lost circulation prevention well-flushing.After well-flushing is normal, production
When production fluid on be advanced into the upper end of this device, upper and lower pressure balance, the packing element retraction of inflatable packer 3, packing element in from
By state, the service life of packing element is extended.
Claims (5)
1. submerged electric oil pump well lost circulation prevention well washing apparatus, including cup packing block and inflatable packer, is characterized in that, upper connection
Pipe, cup packing block, inflatable packer, ball-and-seat and lower communicating tube pass sequentially through threaded connection from top to bottom.
2. submerged electric oil pump well lost circulation prevention well washing apparatus as claimed in claim 1, is characterized in that, the valve ball of the ball-and-seat is located at
The top of valve seat.
3. submerged electric oil pump well lost circulation prevention well washing apparatus as claimed in claim 2, is characterized in that, the cup packing block is top
External diameter is big, lower outer diameter is little, the rim of a bowl cone seal block upward, and the depth-set of top the rim of a bowl is in 30cm-40cm, bottom bowl
The taper of body is set between 15 ° -20 °.
4. submerged electric oil pump well lost circulation prevention well washing apparatus as claimed in claim 3, is characterized in that, be provided with the cup packing block
Central canal, the top of central canal was threadedly coupled with upper communicating pipe, bottom is threadedly coupled with amplificate packer.
5. submerged electric oil pump well lost circulation prevention well washing apparatus as claimed in claim 4, is characterized in that, the upper communicating pipe is connected with
Liquid flow hole and external screw thread are equipped with the body of pipe, were threadedly coupled with the punctate opacity of the cornea seat of Electric Submersible Pump Unit motor upper communicating pipe；Under
Communicating pipe is threadedly coupled with the hanging basket of Electric Submersible Pump Unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621039294.XU CN206053906U (en) | 2016-09-06 | 2016-09-06 | Submerged electric oil pump well lost circulation prevention well washing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621039294.XU CN206053906U (en) | 2016-09-06 | 2016-09-06 | Submerged electric oil pump well lost circulation prevention well washing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206053906U true CN206053906U (en) | 2017-03-29 |
Family
ID=58370990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621039294.XU Expired - Fee Related CN206053906U (en) | 2016-09-06 | 2016-09-06 | Submerged electric oil pump well lost circulation prevention well washing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206053906U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761569A (en) * | 2019-11-05 | 2021-05-07 | 中国石油化工股份有限公司 | Electric pump well washing device and method, special packer and special hanging basket |
-
2016
- 2016-09-06 CN CN201621039294.XU patent/CN206053906U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761569A (en) * | 2019-11-05 | 2021-05-07 | 中国石油化工股份有限公司 | Electric pump well washing device and method, special packer and special hanging basket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170329 Termination date: 20200906 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |