CN103362787A - High negative pressure deep-drawing oil well pump - Google Patents
High negative pressure deep-drawing oil well pump Download PDFInfo
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- CN103362787A CN103362787A CN2012101029120A CN201210102912A CN103362787A CN 103362787 A CN103362787 A CN 103362787A CN 2012101029120 A CN2012101029120 A CN 2012101029120A CN 201210102912 A CN201210102912 A CN 201210102912A CN 103362787 A CN103362787 A CN 103362787A
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- oil well
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Abstract
The invention discloses a high negative pressure deep-drawing oil well pump and relates to a deep-drawing pump. The pump solves the problem that the existing oil well pump is small in suction force, cannot effectively amplify differential production pressure, the large-diameter oil well pump cannot be applied due to limitation of lifting ability of a ground oil pumping unit, and a yield-increasing effect is not ideal. The pump comprises a pump cylinder and a piston, wherein a reducing mechanism is arranged on a cylinder body of the pump cylinder; the cross section area of an inner channel of the cylinder body above the reducing mechanism of the pump cylinder is less than the cross section area of the inner channel of the cylinder body below the reducing mechanism of the pump cylinder; the piston is provided with an appearance mechanism matched with an inner cavity structure of the reducing mechanism; the cross section area of the piston above the appearance mechanism is less than the cross section area of the piston below the appearance mechanism; the piston is internally provided with a through hole; and the through hole is internally provided with a valve. The pump has the advantages of increased productive capacity, simple structure, convenience in use and maintenance and the like, and is mainly used for oil pumping in an oil field.
Description
Technical field
The present invention relates to a kind of deep oil well pump, particularly a kind of dark odd test oil well pump of negative pressure of oil field use.
Background technique
Continuous oil pipe operation equipment is a kind of of oil field job that requires special skills equipment, and the title of " omnipotent working equipment " is arranged, and when using coiled tubing and carry out the operation of oil/water well wireline test, often runs into because coiled tubing and inside cable stretch, rotation difference causes cable to break to take off.Inapplicable this compensator at present, domesticly there is no coiled tubing test and can revolve adaptive compensator with the coiled tubing test string, if will cause cable to be crossed drawing damage in test jobs.
In view of this, for the problems referred to above, propose a kind of coiled tubing test string reasonable in design and that effectively improve above-mentioned disappearance and can revolve adaptive compensator.
Summary of the invention
Purpose of the present invention is intended to overcome existing negative pressure and deeply takes out the deficiency that technology exists, and provides a kind of reasonable in design and effectively improve the dark odd test oil well pump of negative pressure of defects.
Purpose of the present invention can realize by following technical solution:
This oil well pump, comprise pump barrel, piston, the cylindrical shell of described pump barrel is provided with diameter changing mechanism, the cylindrical shell internal channel cross sectional area of the diameter changing mechanism top of described pump barrel is less than the cylindrical shell internal channel cross sectional area of the diameter changing mechanism below of this pump barrel, described piston is provided with the profile mechanism that matches with the inner-cavity structure of described diameter changing mechanism, the cross sectional area that described piston is positioned at described profile mechanism upper section is positioned at the cross sectional area of described profile mechanism below part less than this piston, be provided with through hole in the described piston, be provided with valve in this through hole.The effect that described diameter changing mechanism is set is to make the interior formation of described pump barrel be positioned at the cylindrical shell internal channel cross sectional area of described diameter changing mechanism top less than the structure of the cylindrical shell internal channel cross sectional area that is positioned at described diameter changing mechanism below.The effect that described profile mechanism is set is to match with described diameter changing mechanism, and the cross sectional area that described piston is formed be positioned at described profile mechanism upper section is less than the structure of the cross sectional area that is positioned at described profile mechanism below part.The cylindrical shell internal channel cross sectional area of the diameter changing mechanism top of described pump barrel is less than the cylindrical shell internal channel cross sectional area of the diameter changing mechanism below of described pump barrel, the cross sectional area that described piston is positioned at described profile mechanism upper section is by this textural association less than the effect that this piston is positioned at the cross sectional area of described profile mechanism below part, the cross sectional area of the upper part of described piston is reduced, thereby reduce the above fluid column of this oil well pump to the pressure that described piston produces, reduce the up resistance of described piston; The cross sectional area of the lower part of described piston is increased, thereby can realize the lower space of described piston is increased pressure.The effect that described through hole and described valve are set in the described piston is to make described piston below liquid, when described descent of piston, rises to described piston top by described through hole and described valve under pressure; When described piston stroking upward, described valve is closed this through hole.The cross sectional area of the upper part of described piston refers to the cross sectional area sum of cross sectional area and the piston inner via hole of part piston body; The cross sectional area of the lower part of described piston refers to the cross sectional area sum of cross sectional area and the piston inner via hole of lower part piston body.
Purpose of the present invention can also be opened realization by following technical solution:
The cross sectional area of part is less than the cross sectional area of part under the through hole of described piston on the through hole of described piston, the valve of described piston comprises the valve on the through hole top that is arranged at described piston and is arranged at the valve of the through hole bottom of described piston that described piston below is provided with the valve that is fixedly connected with described pump barrel.The cross sectional area that with described via design is upper part is the weight that is conducive to alleviate described piston less than the effect of the structure of the cross sectional area of lower part, and when described descent of piston, reduces the flow resistance of liquid in described through hole.The effect that two valves are set in the through hole of described piston is bearing capacity and the working life of improving valve.During when described descent of piston in that the valve function be fixedly connected with described pump barrel is set below the described piston, this valve closing, thus the liquid in the space between this valve and the described piston is being gone upward under the effect of described piston downforce above the described piston; When described piston stroking upward, this valve open, thus the liquid that guarantees this valve below can pour in the space between this valve and the described piston.Described diameter changing mechanism is provided with through hole.The effect of described diameter changing mechanism through hole is the liquid of discharging when described piston stroking upward between described diameter changing mechanism and the described piston, reduces the up resistance of described piston stroking upward.The valve port cross sectional area on the through hole top of described piston is less than the valve port cross sectional area of the through hole bottom of described piston.The valve port cross sectional area on the through hole top of described piston is when the described descent of piston less than the effect of the valve port cross sectional area of the through hole bottom of described piston, and the valve that is conducive to reduce the through hole bottom of described piston enters the resistance of the through hole of described piston to liquid; When described piston stroking upward, under the effect of fluid pressure, be conducive to timely throttle down.Described piston top is provided with coupled disconnection mechanism.The effect that disconnection mechanism is set is to make things convenient for being connected and disengaging of power mechanism and described piston.Described diameter changing mechanism is the reducing short circuit, and the cylindrical shell of the diameter changing mechanism top of described pump barrel is little pump barrel, and the cylindrical shell of the diameter changing mechanism below of described pump barrel is large pump barrel.Described pump barrel is made of component combinations such as described reducing short circuit, described little pump barrel, described large pump barrels and has the advantage of being convenient to assembly and disassembly and being convenient to safeguard.The valve of described piston is the traveling valve assembly, the profile mechanism that described piston matches with the inner-cavity structure of described diameter changing mechanism is reducer union, it is small plunger that described piston is positioned at described profile mechanism upper section, and described piston is positioned at described profile mechanism below part and is large plunger.Described piston is made of component combinations such as described reducer union, described small plunger and described large plungers and the valve that uses the traveling valve assembly to make described piston has the advantage of being convenient to assembly and disassembly and being convenient to safeguard.Described disconnection mechanism is the disjointed device assembly.Select the disjointed device assembly to do described disconnection mechanism and have the advantage of being convenient to assembly and disassembly and being convenient to safeguard.The valve that is fixedly connected with described pump barrel that described piston below arranges is fixed valve assembly, and the below of this valve is provided with lower contact, and described pump barrel top is provided with upper connection.Use fixed valve assembly to make the described valve that is fixedly connected with and have the advantage of being convenient to assembly and disassembly and being convenient to safeguard.Describedly be fixedly connected with valve below the lower contact effect is set is to be convenient to this oil well pump realize being connected with the described valve lower part that is fixedly connected with.The effect that described pump barrel top is provided with upper connection be convenient to this oil well pump realize with described pump barrel above the connection of corresponding parts.
Beneficial effect of the present invention: because multiple formation mechanism or the parts reasonable in design such as corresponding profile mechanism by the diameter changing mechanism of described pump barrel, described pump barrel, described piston, described piston, realized that this oil well pump adopts major diameter pump and minor diameter pump composite structure, the maximum load that makes suspension point is the lifting load of little pump, utilize the major diameter pump to increase suction force, improved well deliverability.So the present invention has increases production capacity, simple in structure, the advantage such as working service is convenient.
Description of drawings
Fig. 1 is the formation structural representation of the embodiment of the invention;
Fig. 2 is the cross-sectional structure cut-away view that the piston of the embodiment of the invention is positioned at described profile mechanism upper section;
Fig. 3 is the cross-sectional structure cut-away view that the piston of the embodiment of the invention is positioned at described profile mechanism below part.
Among the figure 1, the disjointed device assembly, 2, upper connection, 3, the traveling valve assembly, 4, little pump barrel, 5, small plunger, 6, the reducing short circuit, 7, reducer union, 8, large pump barrel, 9, large plunger, 10, traveling valve assembly, 11, be fixedly connected with valve, 12, lower contact, 13, through hole, 14, through hole, the area of S1, cross section, the area of S2, cross section.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
The dark odd test oil well pump of this large negative pressure, comprise upper connection 2; little pump barrel 4; reducing short circuit 6; large pump barrel 8; be fixedly connected with valve 11 and lower contact 12 is composed in series pump barrel; traveling valve assembly 3; small plunger 5; reducer union 7; large plunger 9; traveling valve assembly 10 is composed in series piston; the cross sectional area S1 that described piston is positioned at described reducer union 7 upper sections is positioned at the cross sectional area S2 of described reducer union 7 below parts less than this piston; disjointed device assembly 1 is connected with described small plunger 5; described reducing short circuit 6 is provided with through hole 13, is provided with through hole 14 in the described piston.After the flow string of packet was equipped with in the bottom of the dark odd test oil well pump of the large negative pressure of this that is lowered in oil well, lower rod string with the disjointed device plug just can normally be produced with after described disjointed device assembly 1 docks.In the pumping unit up stroke, piston stroking upward, described traveling valve 3,10 cuts out, and the described valve 11 that is fixedly connected with is opened under the effect of pump intake pressure, and well liquid enters in the described large pump barrel 8.Liquid in the cavity of described little pump barrel 4, described small plunger 5 and described large pump barrel 8, described large plunger 9 formation is discharged by the through hole 13 of described reducing short circuit 7 simultaneously; In down stroke, descent of piston, the described valve 11 that is fixedly connected with is closed, pressure in the described large pump barrel 8 raises, described traveling valve 3,10 is opened, well liquid enters in the oil pipe of this oil well pump top, and the partially liq in oil pipe and the sleeve pipe annular space enters in the cavity that is formed by described little pump barrel 4, described small plunger 5 and described large pump barrel 8, described large plunger 9 through the through hole of described reducing short circuit 6, finishes the pumping process one time.
Claims (10)
1. dark odd test oil well pump of large negative pressure, comprise pump barrel, piston, the cylindrical shell that it is characterized in that described pump barrel is provided with diameter changing mechanism, the cylindrical shell internal channel cross sectional area of the diameter changing mechanism top of described pump barrel is less than the cylindrical shell internal channel cross sectional area of the diameter changing mechanism below of this pump barrel, described piston is provided with the profile mechanism that matches with the inner-cavity structure of described diameter changing mechanism, the cross sectional area that described piston is positioned at described profile mechanism upper section is positioned at the cross sectional area of described profile mechanism below part less than this piston, be provided with through hole in the described piston, be provided with valve in this through hole.
2. the dark odd test oil well pump of a kind of large negative pressure as claimed in claim 1, it is characterized in that the cross sectional area of part on the through hole of described piston is less than the cross sectional area of part under the through hole of described piston, the valve of described piston comprises the valve on the through hole top that is arranged at described piston and is arranged at the valve of the through hole bottom of described piston that described piston below is provided with the valve that is fixedly connected with described pump barrel.
3. want the dark odd test oil well pump of 1 or 2 described a kind of large negative pressure such as right, it is characterized in that described diameter changing mechanism is provided with through hole.
4. the dark odd test oil well pump of a kind of large negative pressure as claimed in claim 3 is characterized in that the valve port cross sectional area on through hole top of described piston is less than the valve port cross sectional area of the through hole bottom of described piston.
5. the dark odd test oil well pump of a kind of large negative pressure as claimed in claim 4 is characterized in that described piston top is provided with coupled disconnection mechanism.
6. the dark odd test oil well pump of a kind of large negative pressure as claimed in claim 1 or 2 is characterized in that described diameter changing mechanism is the reducing short circuit, and the cylindrical shell of the diameter changing mechanism top of described pump barrel is little pump barrel, and the cylindrical shell of the diameter changing mechanism below of described pump barrel is large pump barrel.
7. the dark odd test oil well pump of a kind of large negative pressure as claimed in claim 6, the valve that it is characterized in that described piston is the traveling valve assembly, the profile mechanism that described piston matches with the inner-cavity structure of described diameter changing mechanism is reducer union, it is small plunger that described piston is positioned at described profile mechanism upper section, and described piston is positioned at described profile mechanism below part and is large plunger.
8. the dark odd test oil well pump of a kind of large negative pressure as claimed in claim 5 is characterized in that described disconnection mechanism is the disjointed device assembly.
9. the dark odd test oil well pump of a kind of large negative pressure as claimed in claim 7 is characterized in that described plunger top is provided with the disjointed device assembly.
10. the dark odd test oil well pump of a kind of large negative pressure as claimed in claim 2 is characterized in that the valve that is fixedly connected with described pump barrel that described piston below arranges is fixed valve assembly, and the below of this valve is provided with lower contact, and described pump barrel top is provided with upper connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101029120A CN103362787A (en) | 2012-04-10 | 2012-04-10 | High negative pressure deep-drawing oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101029120A CN103362787A (en) | 2012-04-10 | 2012-04-10 | High negative pressure deep-drawing oil well pump |
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| Publication Number | Publication Date |
|---|---|
| CN103362787A true CN103362787A (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101029120A Pending CN103362787A (en) | 2012-04-10 | 2012-04-10 | High negative pressure deep-drawing oil well pump |
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| CN (1) | CN103362787A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185420A (en) * | 2018-02-22 | 2019-08-30 | 中国石油化工股份有限公司 | A kind of ladder is continuously depressured supplementary potentiating oil pickup apparatus and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB823750A (en) * | 1957-05-16 | 1959-11-18 | Us Industries Inc | Deep well reciprocating pump |
| SU1420241A1 (en) * | 1987-03-16 | 1988-08-30 | Азербайджанский государственный научно-исследовательский и проектный институт нефтяной промышленности | Deep-well sucker-rod pumping unit |
| SU1423794A2 (en) * | 1986-10-31 | 1988-09-15 | Нефтегазодобывающее управление "Альметьевнефть" | Deep-well pumping unit |
| CN101782060A (en) * | 2009-01-19 | 2010-07-21 | 莫比森(北京)石油天然气技术开发有限公司 | Hydraulic oil pump |
| CN201896729U (en) * | 2010-12-06 | 2011-07-13 | 中国石油化工股份有限公司 | Gas-proof load-reducing deep well defueling pump |
| CN202612053U (en) * | 2012-04-10 | 2012-12-19 | 中国石油化工股份有限公司 | Large negative pressure deep pumping type oil pump |
-
2012
- 2012-04-10 CN CN2012101029120A patent/CN103362787A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB823750A (en) * | 1957-05-16 | 1959-11-18 | Us Industries Inc | Deep well reciprocating pump |
| SU1423794A2 (en) * | 1986-10-31 | 1988-09-15 | Нефтегазодобывающее управление "Альметьевнефть" | Deep-well pumping unit |
| SU1420241A1 (en) * | 1987-03-16 | 1988-08-30 | Азербайджанский государственный научно-исследовательский и проектный институт нефтяной промышленности | Deep-well sucker-rod pumping unit |
| CN101782060A (en) * | 2009-01-19 | 2010-07-21 | 莫比森(北京)石油天然气技术开发有限公司 | Hydraulic oil pump |
| CN201896729U (en) * | 2010-12-06 | 2011-07-13 | 中国石油化工股份有限公司 | Gas-proof load-reducing deep well defueling pump |
| CN202612053U (en) * | 2012-04-10 | 2012-12-19 | 中国石油化工股份有限公司 | Large negative pressure deep pumping type oil pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185420A (en) * | 2018-02-22 | 2019-08-30 | 中国石油化工股份有限公司 | A kind of ladder is continuously depressured supplementary potentiating oil pickup apparatus and method |
| CN110185420B (en) * | 2018-02-22 | 2022-12-06 | 中国石油化工股份有限公司 | Stepped continuous pressure-reducing and efficiency-increasing oil pumping device and method |
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Application publication date: 20131023 |
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