CN203257648U - Downhole thrice liquid inlet gas preventing pump - Google Patents
Downhole thrice liquid inlet gas preventing pump Download PDFInfo
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- CN203257648U CN203257648U CN 201320270681 CN201320270681U CN203257648U CN 203257648 U CN203257648 U CN 203257648U CN 201320270681 CN201320270681 CN 201320270681 CN 201320270681 U CN201320270681 U CN 201320270681U CN 203257648 U CN203257648 U CN 203257648U
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- ball valve
- pump cylinder
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- gas
- main pump
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Abstract
The utility model discloses a downhole liquid inlet gas preventing pump, which solves the problems of an existing gas preventing pump that gas, which enters into a pump cavity, always exists in a space of the pump cavity and an oil pipe and is not released, and thus a gas preventing effect is poor. The downhole liquid inlet gas preventing pump is characterized in that a main pump cylinder (6) is positioned in a subsidiary pump cylinder (8) so as to form a sealed annular cavity, the middle of the main pump cylinder is provided with a thrice liquid inlet (14), the bottom of the main pump cylinder is provided with a secondary liquid inlet (16), an inner cavity is matched with a plunger (4) in a sliding manner, the upper part of the subsidiary pump cylinder (8) is connected with the main pump cylinder and is provided with a primary liquid inlet (12), the plunger (4) is internally provided with an upper ball valve (3) and a lower ball valve (13), and the main pump cylinder is internally provided with a fixed ball valve (15).
Description
Technical field:
The utility model belongs to the pumping unit of the petroleum production engineering of petroleum industry, and three feed liquor gas prevention pumps of development are suitable for the exploitation of oil field high gas-oil ratio (HGOR) oil well, and having reduced gas must affect oil well pump, has improved pump efficiency.
Background technique:
In the process of oilfield exploitation, the oil well of high steam oil ratio (SOR), gas are the one of the main reasons that affects pumping efficiency of oil pump.These gases occupy the partial volume of pump chamber, can reduce the full level of pump, thereby reduce pump efficiency.During the pump down stroke, the travelling valve of oil well pump is subjected to the impact of gas generally can open hysteresis in the gassiness oil well.When the volume that occupies when gas was enough large, not only during down stroke, travelling valve was not opened, even standing valve might not opened yet during upstroke, and whole up-down stroke only has gas expanding and compression, and does not have the liquid lifting, at this moment, " gas lock " phenomenon appears in oil well pump, can't work." liquid hammer " phenomenon also can occur during gas lock, cause the vibrations of beam hanger oil pumping system, and accelerate to damage.
For making the high gas-oil ratio (HGOR) oil well production normal, a large amount of work has been done in each oil field, and the technology of employing is: supporting, the down-hole airlock-resistant oil pump of high efficient gas anchor and optimize suction parameter etc., played the raising pump efficiency, prevent gas lock, make the normal purpose of producing of high steam oil ratio (SOR) oil well.
Both at home and abroad the technology taked of oil field mainly is from reducing the air content of advancing the pump liquid and reduce to advance pump free gas and separation gas and pump valve is opened affected 2 aspects and carry out.The former major measure: adopt various gas anchors, bleed off casing gas, increase submergence and reduce jig frequency etc.; Latter mainly takes the oil well pump of special construction to realize, the gas-tight principle of various gas prevention pumps is different, for example: adopt the traveling valve of enforced opening to reduce free gas to the impact of traveling valve, the gas and oil that adopts the gas prevention pump of gas-liquid cavity displacement and adopt the two stage compression oil well pump to reduce in the pump chamber recently improves pump efficiency, and above-mentioned gas prevention pump all is on the conventional pump basis pump housing or cavity to be improved, or increases the Novel gas-tight pump that special construction forms.Above-mentioned improvement pump has certain effect to improving pump efficiency, and still, the gas that enters pump chamber is present in the space of pump chamber and oil pipe all the time, does not discharge, and the gas-tight effect is under some influence, and some pump difficulty of processing is large, and the life-span is low.And the pump of other type all is generally all to be that the gas and oil that adopts the two stage compression oil well pump to reduce in the pump chamber recently improves pump efficiency, above-mentioned gas prevention pump is for entering the gas of pump chamber, gas is present in the space of pump chamber and oil pipe all the time, be subjected to the impact of oil pipe internal pressure very large, the gas-tight effect is under some influence.
The model utility content:
The purpose of this utility model provides a kind of simple in structure, three the feed liquor airlock-resistant oil pumps in the significant down-hole of gas-tight effect.
The utility model is achieved in that
Three the feed liquor gas prevention pumps in down-hole, main pump cylinder 6 is positioned at the annular space of a sealing of auxiliary pump cylinder 8 formation, main pump cylinder middle part is provided with three liquid entering holes 14, bottoms has secondary liquid entering hole 16, inner chamber and plunger 4 to be slidingly matched, the top of auxiliary pump cylinder 8 is connected with the main pump cylinder, liquid entering hole 12 once, upper ball valve 3, lower ball valve 13 are arranged in the plunger 4, fixing ball valve 15 is arranged in the main pump cylinder.
Fixing ball valve cover 10 is connected with lower fixing ball valve cover 9, and lower fixing ball valve cover 9 is connected with main pump cylinder 6, and fixing ball valve 15 and secondary liquid entering hole 16 are positioned on the fixing ball valve cover, and fixing ball valve cover 10 is connected with fixing ball valve seat 11.
There are upper ball valve cover 2, lower ball valve cage 5 to match with upper ball valve 3, lower ball valve 13 respectively in the plunger 4.
The utility model is suitable for the exploitation of the high steam oil ratio (SOR) oil well in oil field.The utility model comprises major and minor pump barrel, and main pump cylinder middle part is provided with three liquid entering holes, bottoms the secondary liquid entering hole, and auxiliary pump cylinder top is provided with liquid entering hole one time, and plunger is loaded in the main pump cylinder.The utility model is made as the double pump barrel structure, and simplicity of design is with low cost.It is identical that working procedure and conventional tubular type are taken out pump, directly connects in the lower going-into-well with oil pipe, and plunger is lowered in the pump barrel with sucker rod, exert pressure and to exploit after qualified, realize the separation of three oil gas, solved the problem of the high steam oil ratio (SOR) of oil field oil exploitation, improved the pump efficiency of oil well pump.Three the feed liquor gas prevention pumps in down-hole comprise the annular space of auxiliary pump cylinder and the main pump cylinder of separation, on the basis of former pump structure, 2 liquid entering holes have been set up more, the free gas or the separation gas that enter in the pump barrel can be discharged by liquid entering hole, reduce gas occupying pump housing chamber, thereby reduced the impact that gas is opened pump valve, efficiently solved the problem of outlet of gas in the pump barrel.Realized three feed liquors of oil well pump, realized during a feed liquor that the sleeve pipe of gas-liquid separates, the secondary feed liquor has been realized the separation of gas-liquid in the annular space, and three feed liquors have been realized the release of gas in the main pump cylinder, have fundamentally solved the impact of gas on pump valve.
The utility model compared with prior art has following significant advantage:
1, the utility model is on the basis of former pump structure, 2 liquid entering holes have been set up, the free gas or the separation gas that enter in the pump barrel can be discharged by two, three liquid entering holes, reduce gas occupying pump housing chamber, thereby reduced the impact that gas is opened pump valve, efficiently solved the problem of outlet of gas in the pump barrel.
2, adopt the inside and outside jacket casing of major and minor pump barrel to close structure, be equivalent to adopt a gas anchor, combine with pump cleverly, realized that gas advances before the pump, the separation of free gas has reduced the free gas that advances pump.
3, the utility model has been realized three feed liquors of oil well pump, the auxiliary pump jacket casing pipe of having realized gas-liquid during a feed liquor separates, the secondary feed liquor has been realized the separation of major and minor pump barrel annular space, and three feed liquors have been realized the release of gas in the main pump cylinder, have fundamentally solved the impact of gas on the pump valve.Greatly improved pump efficiency.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
Embodiment:
Below in conjunction with embodiment the utility model is done further detailed description: referring to accompanying drawing, three the feed liquor gas prevention pumps in down-hole, main pump cylinder 6 is positioned at the annular space of a sealing of auxiliary pump cylinder 8 formation, main pump cylinder middle part is provided with liquid entering hole 14 three times, and secondary liquid entering hole 16 is arranged at the bottom, and there is plunger 4 inside, the top of auxiliary pump cylinder 8 is connected with the main pump cylinder, once liquid entering hole 12, and upper ball valve 3, lower ball valve 13 are arranged in the plunger 4, and fixing ball valve 15 is arranged in the main pump cylinder.
Main pump cylinder top links to each other with upper connection 1, and the bottom is provided with fixing ball valve cover 9, fixing ball valve 15, fixing ball valve seat 10 and pump pressure cap 11.And plunger 4 is provided with upper ball valve cover 2, upper ball valve 3, and lower ball valve cage 5 and lower ball valve 13, the plunger pressure cap is arranged at the bottom.Auxiliary pump cylinder top is provided with liquid entering hole, and the bottom is extremely stifled.According to the needs of tail pipe under the scene, can change jointing into.And oil drainer can replace lower fixing ball valve cover 9.
According to the engineering design requirement, pump barrel (comprising main pump cylinder 6 and auxiliary pump cylinder 8 two-part) is connected lower to designed depth with oil pipe during on-the-spot the use.4 of plungers are connected with sucker rod, are lowered in the pump barrel, carry over-stroke, completion on normal.
When down-hole string needed pressure testing, roofbolt partly need to be mentioned upper dead center position, and this moment, plunger 4 passed through the inlet opening 14 at main pump cylinder 6 middle parts, and the pressure of general pressure testing is 5Mpa, did not reduce in 30 minutes qualified (with reference to pump stage and wastage).Can be according to the engineering design completion after qualified.
Claims (4)
1. three feed liquor gas prevention pumps in down-hole, it is characterized in that main pump cylinder (6) is positioned at the annular space that auxiliary pump cylinder (8) forms a sealing, main pump cylinder middle part is provided with three liquid entering holes (14), the bottom has secondary liquid entering hole (16), inner chamber and plunger (4) to be slidingly matched, the top of auxiliary pump cylinder (8) is connected with the main pump cylinder, liquid entering hole (12) once, upper ball valve (3), lower ball valve (13) are arranged in the plunger (4), fixing ball valve (15) is arranged in the main pump cylinder.
2. three feed liquor gas prevention pumps in down-hole according to claim 1, it is characterized in that auxiliary pump cylinder (8) and main pump cylinder (6) are connected in the upper connection (1), auxiliary pump cylinder (8) is respectively equipped with seal ring with the inside and outside circle of main pump cylinder (6), and the bottom of auxiliary pump cylinder (8) has connecting head to be connected with tail pipe.
3. three feed liquor gas prevention pumps in down-hole according to claim 1 and 2, it is characterized in that fixing ball valve cover (10) is connected with lower fixing ball valve cover (9), lower fixing ball valve cover (9) is connected with main pump cylinder (6), fixing ball valve (15) and secondary liquid entering hole (16) are positioned on the fixing ball valve cover, and the fixing ball valve cover is connected with fixing ball valve seat (11).
4. three the feed liquor gas prevention pumps in down-hole according to claim 1 is characterized in that having in the plunger (4) upper ball valve cover (2), lower ball valve cage (5) to match with upper ball valve (3), lower ball valve (13) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320270681 CN203257648U (en) | 2013-05-17 | 2013-05-17 | Downhole thrice liquid inlet gas preventing pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320270681 CN203257648U (en) | 2013-05-17 | 2013-05-17 | Downhole thrice liquid inlet gas preventing pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203257648U true CN203257648U (en) | 2013-10-30 |
Family
ID=49470217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320270681 Expired - Lifetime CN203257648U (en) | 2013-05-17 | 2013-05-17 | Downhole thrice liquid inlet gas preventing pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203257648U (en) |
-
2013
- 2013-05-17 CN CN 201320270681 patent/CN203257648U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171228 Address after: Kumar ute Township Road Yangon city Republic of the Union of Myanmar PIA and Ba Hu Road 2 street 45B glar vivax people Patentee after: Golden oil joint operation Co.,Ltd. Address before: 610051 room 1605, No. 9, Highland Center, Jianshe Road, Chenghua District, Chengdu City, Sichuan Patentee before: CHENGDU NORTH PETROLEUM EXPLORATION AND DEVELOPMENT TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230629 Address after: 23rd Floor, MMG Building, Binhai Avenue, East Coast, Panama City, Republic of Panama Patentee after: Northern Petroleum Operations Co. Address before: Kumar ute Township Road Yangon city Republic of the Union of Myanmar PIA and Ba Hu Road 2 street 45B glar vivax people Patentee before: Golden oil joint operation Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |
|
| CX01 | Expiry of patent term |