CN100507272C - Sand stop for electric submersible pump - Google Patents
Sand stop for electric submersible pump Download PDFInfo
- Publication number
- CN100507272C CN100507272C CNB2007101107345A CN200710110734A CN100507272C CN 100507272 C CN100507272 C CN 100507272C CN B2007101107345 A CNB2007101107345 A CN B2007101107345A CN 200710110734 A CN200710110734 A CN 200710110734A CN 100507272 C CN100507272 C CN 100507272C
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- Prior art keywords
- sand
- grid
- urceolus
- submersible pump
- electric submersible
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Abstract
The invention relates to a sand block device used for the electric hidden pump including an out canister. The column sand block net is set in the out canister which is set with the movable slide. The out canister and the sand block net are connected to the lower interface which has the oil channel of the pump and the hole. The invention can avoid the sand block the oil channel of the electric hidden pump and assure the normal work under well.
Description
Technical field
The present invention relates to the down-hole oil production field of tool, particularly relate to a kind of sand device that is used for electric submersible pump.
Background technique
In oil extraction, need utilize electric submersible pump that the fluid of deep under ground is extracted on the bottom surface.During the fluid of electric submersible pump under swabbing well, oil well shakes out easily, and sand grains is mixed in the fluid and extracts out through electric submersible pump.When electric submersible pump quits work, the sand grains in the fluid will be deposited on electric submersible pump above, cause fuel-displaced runner to stop up, make the electric submersible pump can't proper functioning, incur loss through delay the oil well ordinary production.
A kind of electric submersible pump anti-plugging check valve of available technology adopting, on electric submersible pump, add one-way valve, by one-way valve the sand grains in the fluid is deposited in the fixing space, but increase along with electric submersible pump open and close machine number of times, the sand grains of precipitation is because of discharging, cumulative, finally also can stop up oil flow channel, make the electric submersible pump can't proper functioning.Therefore, though prior art has solved the oil flow channel blocking problem to a certain extent, can not fundamentally this problem thoroughly be solved.
Summary of the invention
Technical problem to be solved by this invention provides a kind of sand device of electric submersible pump, and this sand device can effectively avoid sand grains to stop up the oil flow channel of electric submersible pump, guarantees electric submersible pump proper functioning under oil well.
The present invention discloses a kind of sand device that is used for electric submersible pump, comprise a urceolus, the sand grid of cylindricality axially is set in the described urceolus, be provided with slide block movable up and down in the described sand grid, the lower end of described urceolus and sand grid is connected lower contact, described lower contact has the oil flow channel of the described electric submersible pump of connection and the through hole of described sand grid inside, is provided with the supporting frame that is used to support described sand grid in the described urceolus.
Preferably, be provided with shutter body above the described sand grid, described shutter body connects described sand grid.
Preferably, be provided with ring-type sand block valve movable up and down between described sand grid and the urceolus, described sand block valve and described lower contact fasten.
Preferably, described lower contact is provided with the perforate of ring-type, and described perforate is communicated with the annular space between described sand grid and the described urceolus with the oil flow channel of described electric submersible pump.
Preferably, be provided with shutter body above the annular space between described sand grid and the described urceolus, described shutter body connects described sand grid and described urceolus by support.
Preferably, described sand grid is the cylinder that has mesh.
Preferably, described cylinder upper wire bore dia is worked energetically 1 millimeter, the lower wire bore dia is little do 1 millimeter preferred, the mesh diameter of described cylinder is greater than 1 millimeter, described cylinder bottom wraps mesh diameter less than 1 millimeter reticulated work.
Preferably, described urceolus is a seamless steel pipe.
Compared with prior art, the present invention has the following advantages:
The present invention can shut down electric submersible pump the sand grains that deposits at every turn and extract out with fluid when starting shooting next time; like this; under the situation of electric submersible pump repeated multiple times open and close machine, still can effectively avoid sand grains to stop up oil flow channel; thoroughly solve the oil flow channel blocking problem, guarantee electric submersible pump proper functioning under oil well.
Description of drawings
The sand device sectional drawing that is used for electric submersible pump that Fig. 1 provides for first embodiment of the invention;
Figure 1A is the partial enlarged drawing of Fig. 1;
The sand device working state sectional drawing that is used for electric submersible pump that Fig. 2 provides for first embodiment of the invention;
The sand device sectional drawing that is used for electric submersible pump that Fig. 3 provides for second embodiment of the invention;
The sand device working state sectional drawing that is used for electric submersible pump that Fig. 4 provides for second embodiment of the invention
The sand device sectional drawing that is used for electric submersible pump that Fig. 5 provides for third embodiment of the invention;
The sand device working state sectional drawing that is used for electric submersible pump that Fig. 6 provides for third embodiment of the invention;
The sand device sectional drawing that is used for electric submersible pump that Fig. 7 provides for fourth embodiment of the invention;
The sand device working state sectional drawing that is used for electric submersible pump that Fig. 8 provides for fourth embodiment of the invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Consult Fig. 1, be the sand device sectional drawing that is used for electric submersible pump that first embodiment of the invention provides, comprise urceolus 1, sand grid 2, slide block 3, reach lower contact 4.Urceolus 1 can be circular tubular body, can adopt seamless steel pipe.The sand grid 2 of cylindricality axially is set in the urceolus 1, and sand grid 2 can be the cylinder that has mesh.Sand grid 2 inside are provided with slide block 3 movable up and down, and the diameter of slide block 3 has the slit that is enough to by fluid and sand grains less than sand grid 2 between slide block 3 and the sand grid 2.The density of slide block 3 is greater than sand grains, for having the solid metal body of constant weight, as iron, steel, copper etc.The lower end of urceolus 1 and sand grid 2 is connected lower contact 4, and lower contact 4 has the oil flow channel 6 of connection electric submersible pump and the through hole 5 of sand grid 2 inside.Through hole 5 is arranged on the center position under the sand grid 2, and the diameter of through hole 5 when slide block 3 falls, can cover through hole 5 less than the diameter of slide block 3 fully.
For firm sand grid 2, also be provided with supporting frame (not illustrating among the figure) in the urceolus 1, in order to sand grid 2 is fixed in the urceolus 1.Mesh 21 on the sand grid 2 can see through fluid (seeing Figure 1A).
During work, before electric submersible pump started, slide block 3 was blocked through hole 5 (as Fig. 1) in the bottom of sand grid.After electric submersible pump starts, the fluid that has sand grains is because the draft effect of electric submersible pump, through oil flow channel 6, jack-up slide block 3, enter sand grid 2, part fluid enters into urceolus 1 from sand grid 2 tops, and the mesh that another part passes sand grid 2 enters into urceolus 1, together is drawn out of (as Fig. 2) through urceolus 1.
When electric submersible pump quit work, slide block 3 was because the bottom that sand grid 2 is fallen back in action of gravity rapidly covers through hole 5.The sand grains that is mixed with in the fluid also can be owing to action of gravity slowly be deposited in the lower contact 4 between urceolus 1 and the sand grid 2, because slide block 3 is to cover through hole 5 before the sand grains precipitation, sand grains just can't enter into oil flow channel 6 by through hole 5.
When electric submersible pump starts once more, have the draft effect of the fluid of sand grains owing to electric submersible pump, through oil flow channel 6, jack-up slide block 3 enters sand grid 2, and the mesh that a part of fluid passes sand grid 2 enters into urceolus 1.Because the souring of fluid forms disturbance in the annular space of fluid between sand grid 2 and urceolus 1, the sand grains of precipitation is stirred by mobile fluid, and is carried through urceolus 1 by fluid and to be drawn out of, and the sand setting in the lower contact 4 is all carried outside the most at last.
For preventing that sand grains is deposited in the sand grid 2, the present invention can add a shutter body on sand grid 2, shelter from the sand grains of precipitation.
Consult Fig. 3, be the sand device sectional drawing that is used for electric submersible pump that second embodiment of the invention provides, comprise urceolus 1, sand grid 12, slide block 3, lower contact 4, reach shutter body 7.Shutter body 7 be arranged on sand grid 12 above, apart from the top of sand grid 12 one section small distance is arranged, shutter body 7 connects sand grid 12 by support.Shutter body 7 can be fimbriatum, and its lower end diameter is greater than the diameter of sand grid 12.Shutter body 7 can not enter in the sand grid 12 sand grains of top precipitation, but the fluid in the sand grid 12 still can enter into urceolus 1 by the top.
This embodiment's sand grid 12 can be the cylindrical body that has mesh, and this cylindrical body can be divided into two-part up and down, and the diameter of its top mesh can be by sand grains and fluid greater than 1 millimeter; The diameter of bottom mesh can block sand grains and see through fluid less than 1 millimeter.
During work, before electric submersible pump started, slide block 3 was blocked through hole 5 (as Fig. 3) in the bottom of sand grid.After electric submersible pump starts, have the draft effect of the fluid of sand grains owing to electric submersible pump, through oil flow channel 6, jack-up slide block 3 enters sand grid 12, and slide block 3 arrives the top of sand grids 12.Part fluid enters into urceolus 1 from sand grid 12 tops, and the mesh that another part passes sand grid 12 tops enters into urceolus 1, together is drawn out of (as Fig. 4) through urceolus 1.
When electric submersible pump quit work, slide block 3 was because the bottom that sand grid 12 is fallen back in action of gravity rapidly covers through hole 5.The sand grains that is mixed with in the fluid also can be owing to action of gravity slowly directly be deposited in the lower contact 4 between urceolus 1 and the sand grid 12, or is deposited in earlier on the shutter body 7, is slipped in the lower contact 4 by shutter body 7 again.Because slide block 3 is to cover through hole 5 before the sand grains precipitation, a small amount of sand grains in the sand grid 12 just can't enter into oil flow channel 6 by through hole 5, because sand grid 12 bottom mesh are very little, the sand grains that is deposited in the lower contact 4 can not penetrate into its inside by sand grid 12.
When electric submersible pump starts once more, have the draft effect of the fluid of sand grains owing to electric submersible pump, through oil flow channel 6, jack-up slide block 3 enters sand grid 12, and the mesh that a part of fluid passes sand grid 12 tops enters into urceolus 1.Because the souring of fluid forms disturbance in the annular space of fluid between sand grid 12 and urceolus 1, the sand grains of precipitation is stirred by mobile fluid, and is carried through urceolus 1 by fluid and to be drawn out of, and the sand setting in the lower contact 4 is all carried outside the most at last.
Consult Fig. 5, be the sand device sectional drawing that is used for electric submersible pump that third embodiment of the invention provides, comprise urceolus 1, sand grid 12, slide block 3, lower contact 11, shutter body 7, reach sand block valve 8.
Be provided with ring-type sand block valve 8 movable up and down between sand grid 12 and the urceolus 1.The internal diameter of sand block valve 8 is slightly larger than the diameter of sand grid 12, and the external diameter of sand block valve 8 is less than the internal diameter of urceolus 1.Sand block valve 8 is close to sand grid 12 and is slided up and down, and the slit between sand block valve 8 and the urceolus 1 is enough to by sand grains and fluid.
This embodiment's sand grid 12 can be the cylindrical body that has mesh, and this cylindrical body can be divided into two-part up and down, and the diameter of its top mesh can be by sand grains and fluid greater than 1 millimeter; The diameter of bottom mesh can block sand grains and see through fluid less than 1 millimeter.
During work, before electric submersible pump started, slide block 3 was blocked through hole 5 (as Fig. 5) in the bottom of sand grid 12.After electric submersible pump starts, have the draft effect of the fluid of sand grains owing to electric submersible pump, by oil flow channel 6, via through holes 5 jack-up slide blocks 3 through perforate 9 jack-up sand block valves 8, enter in sand grid 12 and the annular space, together are drawn out of (as Fig. 6) through urceolus 1.
When electric submersible pump quit work, slide block 3 prevented that sand grains from entering oil flow channel 6 by through hole 5 because the bottom that sand grid 12 is fallen back in action of gravity rapidly covers through hole 5; Sand block valve 8 also falls back to rapidly in the lower contact 11, prevents that sand grains from entering into oil flow channel 6 by perforate 9.The sand grains that is mixed with in the fluid also can be owing to action of gravity slowly precipitates on lower contact 11 and the sand block valve 8.
When electric submersible pump starts once more, the fluid that has sand grains is because the draft effect of electric submersible pump, by oil flow channel 6, via through holes 5 jack-up slide blocks 3 are through perforate 9 jack-up sand block valves 8, enter in sand grid 12 and the annular space, because the souring of fluid forms disturbance in the annular space of fluid between sand grid 12 and urceolus 1, the sand grains of precipitation is stirred by the fluid that flows, and carry through urceolus 1 by fluid and to be drawn out of, the sand setting on lower contact 11 and the sand grid 8 is all carried outside the most at last.
Because sand block valve 8 varies in weight with slide block 3, also different by the height of fluid jack-up, at this moment, the external and internal pressure of sand grid 12 between sand block valve 8 and slide block 3 section is also different, fluid sees through sand grid 12 and flows to the pressure smaller part by the pressure larger part, is beneficial to fluid and flows fast.
Consult Fig. 7, be the sand device sectional drawing that is used for electric submersible pump that fourth embodiment of the invention provides, comprise urceolus 1, sand grid 13, slide block 3, lower contact 14, shutter body 15, reach sand block valve 8.
Be provided with shutter body 15 above the annular space between sand grid 13 and the urceolus 1, shutter body 15 connects sand grid 13 or urceolus 1 by support, or connects sand grid 13 and urceolus 1.Shutter body 15 can be the fimbriatum of annular, and its bottom diameter is less than the diameter of sand grid 13, and the internal diameter of external diameter and urceolus 1 is suitable.Shutter body 15 slips in the sand grid 13 sand grains of top precipitation, but the fluid in the annular space still can be drawn out of by the top between sand grid 13 and the urceolus 1.
This embodiment's sand grid 13 can be the cylindrical body that has mesh, and the diameter of mesh is 2 millimeters.This cylindrical body outside wraps mesh diameter less than 1 millimeter reticulated work 16.
The diameter range of the mesh of sand grid 13 is 1 millimeter to 10 millimeters, and sand grid 13 bottoms wrap mesh diameter less than 1 millimeter reticulated work 16.
During work, before electric submersible pump started, slide block 3 was blocked through hole 5 (as Fig. 7) in the bottom of sand grid 13.After electric submersible pump starts, have the draft effect of the fluid of sand grains owing to electric submersible pump, by oil flow channel 6, via through holes 5 jack-up slide blocks 3 through perforate 9 jack-up sand block valves 8, enter in sand grid 13 and the annular space, together are drawn out of (as Fig. 8) through urceolus 1.
When electric submersible pump quit work, slide block 3 prevented that sand grains from entering oil flow channel 6 by through hole 5 because the bottom that sand grid 13 is fallen back in action of gravity rapidly covers through hole 5; Sand block valve 8 also falls back to rapidly in the lower contact 4, prevents that sand grains from entering into oil flow channel 6 by perforate 9.The sand grains that is mixed with in the fluid also can slowly be deposited in the bottom of sand grid 13 owing to action of gravity, or is deposited on the shutter body 7, is slipped to the bottom of sand grid 13 again.Because the bottom of sand grid 13 wraps the very little reticulated work of mesh 16, sand grains can not see through sand grid 13 and enter into annular space.
When electric submersible pump starts once more, have of the draft effect of the fluid of sand grains,,, enter in the annular space between sand grid 13 and the urceolus 1 through perforate 9 jack-up sand block valves 8 by oil flow channel 6 owing to electric submersible pump.At this moment, if the sand grains of precipitation is more in the sand grid 13, sand block valve 8 is prior to 3 startups of sliding, fluid enters into sand grid 13 by the mesh on sand grid 13 tops, because the souring of fluid, fluid forms disturbance in sand grid 13, the sand grains of precipitation is stirred by the fluid that flows, be drawn out of through urceolus 1, the pressure that slide block 3 is subjected to sand grains alleviates gradually, after a period of time, slide block 3 is also by fluid jack-up, the slit of fluid between slide block 3 and retaining yarn device 13 carried sand grains and is drawn out of through urceolus 1 to the upper reaches, and the sand setting in the sand grid 13 is all carried outside the most at last.
If the sand grains of precipitation is less in the sand grid 13, slide block 3 may be simultaneously by fluid jack-up with sand block valve 8, because the souring of fluid, fluid forms disturbance in sand grid 13, and the sand grains of precipitation is stirred by the fluid that flows, and is drawn out of through urceolus 1.
Because sand block valve 8 varies in weight with slide block 3, also different by the height of fluid jack-up, at this moment, the external and internal pressure of sand grid 13 between sand block valve 8 and slide block 3 section is also different, fluid sees through sand grid 13 and flows to the pressure smaller part by the pressure larger part, is beneficial to fluid and flows fast.
More than to a kind of electric submersible pump sand device that is used for provided by the present invention, be described in detail, used specific case herein principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1, a kind of sand device that is used for electric submersible pump, it is characterized in that, comprise a urceolus, the sand grid of cylindricality axially is set in the described urceolus, be provided with slide block movable up and down in the described sand grid, the lower end of described urceolus and sand grid is connected lower contact, and described lower contact has the oil flow channel of the described electric submersible pump of connection and the through hole of described sand grid inside; Be provided with the supporting frame that is used to support described sand grid in the described urceolus.
2, sand device as claimed in claim 1 is characterized in that, is provided with shutter body above the described sand grid, and described shutter body connects described sand grid.
3, sand device as claimed in claim 1 or 2 is characterized in that, is provided with ring-type sand block valve movable up and down between described sand grid and the urceolus, and described sand block valve and described lower contact fasten.
4, sand device as claimed in claim 3 is characterized in that, described lower contact is provided with the perforate of ring-type, and described perforate is communicated with the annular space between described sand grid and the described urceolus with the oil flow channel of described electric submersible pump.
5, sand device as claimed in claim 1 is characterized in that, is provided with shutter body above the annular space between described sand grid and the described urceolus, and described shutter body connects described sand grid and described urceolus by support.
6, sand device as claimed in claim 1 is characterized in that, described sand grid is the cylinder that has mesh.
7, sand device as claimed in claim 6 is characterized in that, described cylinder upper wire bore dia is greater than 1 millimeter, and the lower wire bore dia is less than 1 millimeter.
8, sand device as claimed in claim 6 is characterized in that, the mesh diameter of described cylinder is greater than 1 millimeter, and described cylinder bottom wraps mesh diameter less than 1 millimeter reticulated work.
9, sand device as claimed in claim 1 or 2 is characterized in that, described urceolus is a seamless steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101107345A CN100507272C (en) | 2007-06-06 | 2007-06-06 | Sand stop for electric submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101107345A CN100507272C (en) | 2007-06-06 | 2007-06-06 | Sand stop for electric submersible pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101067413A CN101067413A (en) | 2007-11-07 |
| CN100507272C true CN100507272C (en) | 2009-07-01 |
Family
ID=38880069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101107345A Expired - Fee Related CN100507272C (en) | 2007-06-06 | 2007-06-06 | Sand stop for electric submersible pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100507272C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392817A (en) * | 2011-12-12 | 2012-03-28 | 刘庆敏 | Sand-blocking ring for defueling pump |
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2007
- 2007-06-06 CN CNB2007101107345A patent/CN100507272C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101067413A (en) | 2007-11-07 |
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Granted publication date: 20090701 Termination date: 20180606 |