CN100390425C - Self-cleaning desilting device - Google Patents
Self-cleaning desilting device Download PDFInfo
- Publication number
- CN100390425C CN100390425C CNB2004100238302A CN200410023830A CN100390425C CN 100390425 C CN100390425 C CN 100390425C CN B2004100238302 A CNB2004100238302 A CN B2004100238302A CN 200410023830 A CN200410023830 A CN 200410023830A CN 100390425 C CN100390425 C CN 100390425C
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- Prior art keywords
- interior pipe
- self
- outer tube
- cleaning type
- sand
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Abstract
The present invention relates to a self-cleaning type desilting device which is used for preventing an electric pump well from desilting in the underground oil production process of oil fields. The self-cleaning type desilting device comprises a barrel body which comprises a lower joint, an outer tube and a connection hoop. An inner tube of which the top end is blocked is sheathed in the outer tube. The lower end of the inner tube is fixedly connected with the lower joint. An annular cavity is formed between the inner tube and the outer tube. The inner diameter of the middle upper part of the inner tube is slightly larger than the inner diameter of the lower half part, and the middle upper part and the lower half part are respectively provided with a flow guide hole. The upper half part and the lower half part of the inner tube are respectively provided with a silt baffle ring of an upper oil hole and a silt baffle ring of a lower oil hole which are glidingly matched with the inner tube. The self-cleaning type desilting device is characterized in that the silt baffle ring of an upper oil hole and the silt baffle ring of a lower oil hole can automatically control the clearing of a liquid flow passage and carry out the sedimentary silt when the self-cleaning type desilting device is started; the flow guide holes of the middle part and the lower part can be automatically closed when the self-cleaning type desilting device is stopped; the sand can not enter a tube column, which can well solve the problem of the sedimentary silt harm brought by the existing electric pump well.
Description
Technical field:
The present invention relates to a kind of self-cleaning type sand setting device that oil field down-hole oil production operation process prevents the electric pump well desilting that is used for.
Background technique:
Submersible electric pump is the important measures of producing and improving the production fluid amount on the oil field.Because electric pump well adopts the liquid measure height, fluid producing intensity is big, and all there be shaking out in various degree in most of electric pump well stratum, and it is inevitable containing the sand exploitation.At electrical network, control system, when petroleum pipeline breaks down; need to shut down; shut down back tubing string well liquid include sand in the effect deposit of gravity on one-way valve, cause that motor overload burns, cable current is excessive burns or pump shaft such as twists off at accident, brings the tremendous economic loss to the user.
Summary of the invention:
Purpose of the present invention is exactly the defective that exists at prior art, provide a kind of can automated cleaning and prevent that effectively sand setting from damaging the sand-settling device of submersible electric pump.
This self-cleaning type sand-settling device is formed cylindrical shell by lower contact 1, outer tube 2 with after box cupling 7 is connected.Being set with the interior pipe 3 of a top shutoff in outer tube 2, fixedlys connected with lower contact 1 in interior pipe 3 lower ends, forms a toroidal cavity between interior pipe 3 and the outer tube 2.The internal diameter of the middle and upper part of interior pipe 3 is slightly larger than the internal diameter of lower half portion, and offers pod apertures respectively in the middle part and the bottom of interior pipe 3, connects with toroidal cavity.Bottom interior wall in interior pipe 3 Lower Halves is provided with shoulder, in interior pipe 3 first halves, the upper oil hole sand stop ring 5 that slides cooperation with it is housed, be equipped with interior pipe in the Lower Half of interior pipe 3 and slide the following oilhole sand stop ring 4 that cooperates, upper and lower oilhole sand stop ring 5,4 is the hollow circular cylinder that highly is not less than the pod apertures height, and the inner hollow diameter of following oilhole sand stop ring 4 is not less than the inner hollow diameter of upper oil hole sand stop ring 5.
Interior pipe 3 in the such scheme can also be a tubular body, and it is fixing to be threaded between its lower end and the lower contact 1, and the upper end is by the plug 6 back shutoff that is threaded with interior pipe 3.Lower contact 1 is equipped with seal ring with outer tube 3, outer tube 3 respectively with box cupling 7 connecting parts.
Characteristics of the present invention are: (1) design of string pipe is inside and outside double-layer structure, and middle annular space is not only to deposit sand but also to can be used as liquid chunnel; (2) Shang Duan interior pipe top closure prevents that sand grains from entering interior pipe; (3) upper and lower oilhole sand stop ring can be controlled the unimpeded of liquid chunnel automatically and carry the silt particle of deposition when start; can close the pod apertures of middle part and bottom during shutdown again automatically; sand grains can not be entered in the tubing string, solved the harm that present electric pump well sand setting brings well.
Description of drawings:
Accompanying drawing is structural section figure of the present invention.
Embodiment:
With reference to accompanying drawing, this self-cleaning type sand-settling device is formed cylindrical shell by lower contact 1, outer tube 2 with after box cupling 7 is connected.Be set with the interior pipe 3 of a top by plug 6 shutoff in outer tube 2, interior pipe 3 lower ends are threaded with lower contact 1, form a toroidal cavity between interior pipe 3 and the outer tube 2.The internal diameter of the middle and upper part of interior pipe 3 is slightly larger than the internal diameter of lower half portion, and offers pod apertures respectively in the middle part and the bottom of interior pipe 3, connects with toroidal cavity.Bottom interior wall in interior pipe 3 Lower Halves is provided with shoulder, in interior pipe 3 first halves, the upper oil hole sand stop ring 5 that slides cooperation with it is housed, be equipped with interior pipe in the Lower Half of interior pipe 3 and slide the following oilhole sand stop ring 4 that cooperates, upper and lower oilhole sand stop ring 5,4 is the hollow circular cylinder that highly is not less than the pod apertures height, and the inner hollow diameter of following oilhole sand stop ring 4 is not less than the inner hollow diameter of upper oil hole sand stop ring 5.
When the down-hole submersible electric pump is worked, pipe bottom in liquid stream is entered by lower contact, the oilhole sand stop ring is up under promoting, and the pod apertures of interior pipe bottom and outer annular cavity connect, and a part of liquid stream carries sand grains from the outer tube bottom up; Another part directly upwards backs down the upper oil hole sand stop ring, and the pod apertures at middle part and toroidal cavity are connected, and two-part liquid stream converges the back and enters oil pipe by box cupling, the sand setting of this process clean deposition in toroidal cavity on toroidal cavity top.After electric pump well is shut down; upper and lower oilhole sand stop ring loses thrust; under the self gravitation effect; the middle part and the bottom of pipe in sinking to respectively; with middle part on the interior pipe and bottom pod apertures shutoff; owing to interior pipe top seal, in the annular space of pipe and outer tube formation, stop sand setting and enter into submersible electric pump in the sand grains in the liquid stream can only be deposited at this moment simultaneously.
Claims (3)
1. self-cleaning type sand-settling device, it is characterized in that: by lower contact (1), outer tube (2) is connected the back and forms cylindrical shell with box cupling (7), in outer tube (2), be set with the interior pipe (3) of a top shutoff, fixedly connected with lower contact (1) in interior pipe (3) lower end, form a toroidal cavity between interior pipe (3) and the outer tube (2), the internal diameter of the middle and upper part of interior pipe (3) is slightly larger than the internal diameter of lower half portion, and in the middle part of the interior pipe (3) and bottom offers pod apertures respectively, connect with toroidal cavity, and be provided with shoulder in the bottom interior wall of interior pipe (3) Lower Half, the upper oil hole sand stop ring (5) that slides cooperation with it is housed in interior pipe (3) first half, be equipped with interior pipe in the Lower Half of interior pipe (3) and slide the following oilhole sand stop ring (4) that cooperates, on, following oilhole sand stop ring (5,4) be the hollow circular cylinder that highly is not less than the pod apertures height, and the inner hollow diameter of following oilhole sand stop ring (4) is not less than the inner hollow diameter of upper oil hole sand stop ring (5).
2. self-cleaning type sand-settling device according to claim 1 is characterized in that: interior pipe (3) is a tubular body, and it is fixing to be threaded between its lower end and the lower contact (1), and the upper end is by plug (6) the back shutoff that is threaded with interior pipe (3).
3. self-cleaning type sand-settling device according to claim 1 and 2 is characterized in that: lower contact (1) is equipped with seal ring with outer tube (2) and outer tube (2) respectively with the connecting part of box cupling (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100238302A CN100390425C (en) | 2004-03-25 | 2004-03-25 | Self-cleaning desilting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100238302A CN100390425C (en) | 2004-03-25 | 2004-03-25 | Self-cleaning desilting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1563724A CN1563724A (en) | 2005-01-12 |
| CN100390425C true CN100390425C (en) | 2008-05-28 |
Family
ID=34480341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100238302A Expired - Fee Related CN100390425C (en) | 2004-03-25 | 2004-03-25 | Self-cleaning desilting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100390425C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483065B (en) * | 2020-11-16 | 2022-06-07 | 东营百华石油技术开发有限公司 | Sand setting device and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2371374Y (en) * | 1998-11-16 | 2000-03-29 | 胜利石油管理局无杆采油泵公司 | Sand-prevention wear-proof oil-submersible multi-stage centrifugal pump |
| JP2001145811A (en) * | 1999-11-22 | 2001-05-29 | Showa Mfg Co Ltd | Hair catcher |
| CN2451761Y (en) * | 2000-11-23 | 2001-10-03 | 孙敬东 | Filter for oil-well pump |
| US6371206B1 (en) * | 2000-04-20 | 2002-04-16 | Kudu Industries Inc | Prevention of sand plugging of oil well pumps |
| CN2510622Y (en) * | 2001-10-26 | 2002-09-11 | 张巧生 | Electric pump sand-catching apparatus |
| US6481580B1 (en) * | 2000-08-23 | 2002-11-19 | Caterpillar Inc | Fluid filter with locking mechanism |
| CN2584900Y (en) * | 2002-12-20 | 2003-11-05 | 中国石化胜利油田有限公司现河采油厂 | Anti-block uniflow valve for electric submersible pump |
-
2004
- 2004-03-25 CN CNB2004100238302A patent/CN100390425C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2371374Y (en) * | 1998-11-16 | 2000-03-29 | 胜利石油管理局无杆采油泵公司 | Sand-prevention wear-proof oil-submersible multi-stage centrifugal pump |
| JP2001145811A (en) * | 1999-11-22 | 2001-05-29 | Showa Mfg Co Ltd | Hair catcher |
| US6371206B1 (en) * | 2000-04-20 | 2002-04-16 | Kudu Industries Inc | Prevention of sand plugging of oil well pumps |
| US6481580B1 (en) * | 2000-08-23 | 2002-11-19 | Caterpillar Inc | Fluid filter with locking mechanism |
| CN2451761Y (en) * | 2000-11-23 | 2001-10-03 | 孙敬东 | Filter for oil-well pump |
| CN2510622Y (en) * | 2001-10-26 | 2002-09-11 | 张巧生 | Electric pump sand-catching apparatus |
| CN2584900Y (en) * | 2002-12-20 | 2003-11-05 | 中国石化胜利油田有限公司现河采油厂 | Anti-block uniflow valve for electric submersible pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1563724A (en) | 2005-01-12 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080528 Termination date: 20130325 |