CN105484983A - Segmental lifting pump - Google Patents
Segmental lifting pump Download PDFInfo
- Publication number
- CN105484983A CN105484983A CN201610001764.1A CN201610001764A CN105484983A CN 105484983 A CN105484983 A CN 105484983A CN 201610001764 A CN201610001764 A CN 201610001764A CN 105484983 A CN105484983 A CN 105484983A
- Authority
- CN
- China
- Prior art keywords
- pole
- center
- lifting pump
- sealing surface
- ring seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
Abstract
The invention relates to the technical field of mechanical oil extraction by means of reciprocating pumps and provides a segmental lifting pump; the segmental lifting pump comprises a center rod and a main lifting assembly; the main lifting assembly comprises a sealing ring seat, a piston bush and a stopping device; the sealing ring seat is fixed on the center rod; the piston bush capable of sliding along the center rod sleeves the center rod that corresponds to an upper end of the sealing ring seat; a liquid passing channel is formed between an inner wall of the piston bush and an outer wall of the center rod; and an upper sealing surface is formed on an upper end of the sealing ring seat. The segmental lifting pump is reasonable and compact in structure and convenient to use; during an upstroke, seal is formed by means of the upper sealing surface and a lower sealing surface to block the liquid passing channel and realize lifting of a liquid column from the sealing ring seat to the mouth of a well; during a downstroke, the center rod moves down to open the liquid passing channel so as to realize a liquid discharge process; as a result, the liquid column pressure on a piston of an oil well pump at the bottom of the well can be effectively reduced; missing of various parts is reduced; expanding and contracting of an oil pumping rod column are reduced; further, the effective stroke of the piston may be increased, and therefore, the pump efficiency can be improved; in short, the segmental lifting pump has the characteristics of labor saving, simplicity and convenience, and high efficiency.
Description
Technical field
the present invention relates to reciprocating pump technical field of mechanical oil extraction, is a kind of segmentation lifting pump.
Background technique
china is land successively develops more than 40 oil gas field, and total oil recovery well more than 70000 mouthful, in mechanical producing well, sucker rod pumping machine oil recovery well has more than 65000 mouthful, accounts for 91.6% of onshore oil field oil recovery well sum, accounts for 76.2% of national onshore oil field crude output.Above data illustrate, sucker rod pumping machine recovers the oil in the crude oil production of China's onshore oil field, and occupy absolute advantage, on oil field, pump efficiency is the main economic and technical indices of rod pumping pump in oil well management work.How to improve the pump efficiency of sucker rod pumping machine, reach the final object improving oil field development economic benefit, this is that current oil production technology is just in one of the major issue of further investigated.The real pump effect in some oil field is generally about 50% at present, and the lowest only has about 20%, and therefore, raising pump efficiency makes it volume increase still very large potentiality.The pump efficiency of usual theory is actually the ratio of pump actual displacement and Theoretical flowing capacity, and actual displacement is by various factors, and it mainly contains: the elastic telescopic of rod string; Gas and the impact be not fully filled; Leakage.The wherein elastic telescopic of rod string, will reduce stroke of piston, thus reduce pump efficiency, and being affects one of topmost factor of pump efficiency, and the larger pump efficiency of elastic expansion range of pumping well rod string in normal work is lower.
Summary of the invention
the invention provides a kind of segmentation lifting pump, overcome the deficiency of above-mentioned prior art, its extending amount that effectively can solve rod string is large, leakage, the problem that pump efficiency is low.
technological scheme of the present invention is realized by following measures: a kind of segmentation lifting pump, comprises center-pole and main lift assemblies; Main lift assemblies comprises seal ring seat, piston sleeve and retention device; Seal ring seat is fixed on center-pole, the center-pole of corresponding seal ring seat upper end is set with can centrally bar slide piston sleeve; Liquid passage was formed between piston sleeve inwall and center-pole outer wall; Seal ring seat upper end is provided with sealing surface, and piston sleeve lower end is provided with can mate seat in upper sealing surface and blocked the lower sealing surface of liquid passage; The center-pole of corresponding piston sleeve upper end is fixed with and can stops piston sleeve upward sliding but the retention device not blocking liquid passage.
here is the further optimization and/or improvements to foregoing invention technological scheme:
above-mentioned segmentation lifting pump also can comprise at least one secondary lift assemblies, and secondary lift assemblies is consistent with main lift assemblies structure, and secondary lift assemblies is arranged on the center-pole below corresponding main lift assemblies.
above-mentioned upper sealing surface can be the domatic of inside inclined upward, and lower sealing surface is domatic in the outside inclined downward corresponding with upper sealing surface.
above-mentioned retention device can comprise four blend stops, and four blend stops centrally bar even circumferential are fixed on the outer wall of center-pole.
above-mentioned central post top portion can be provided with outer connecting thread, is provided with outer connecting thread bottom center-pole.
reasonable and compact in structure of the present invention, easy to use, form sealing by upper sealing surface and lower sealing surface during upstroke, blocked liquid passage, realize the lifting of seal ring seat to the fluid column of well head, move down opened liquid passage by center-pole during down stroke, realize discharge opeing process; Effectively can reduce the head of liquid that shaft bottom oil pump piston is subject to, reduce the leakage of each parts, reduce rod string and stretch, piston effective stroke will be increased, thus improve pump efficiency, there is laborsaving, easy, efficient feature.
Accompanying drawing explanation
accompanying drawing 1 looks sectional structure schematic diagram for the master that the present invention is arranged in pump barrel.
accompanying drawing 2 is that the A-A of accompanying drawing 1 is to analysing and observe structure for amplifying schematic diagram.
coding in accompanying drawing is respectively: bar centered by 1, and 2 is seal ring seat, and 3 is piston sleeve, and 4 was liquid passage, and 5 is upper sealing surface, and 6 is lower sealing surface, and 7 is blend stop, and 8 is outer connecting thread, and 9 is pump barrel.
Embodiment
the present invention by the restriction of following embodiment, can not determine concrete mode of execution according to technological scheme of the present invention and actual conditions.
in the present invention, for convenience of description, the description of the relative position relation of each parts is all be described according to the Butut mode of Figure of description 1, as: the position relationship of upper and lower, left and right etc. determines according to the Butut direction of Figure of description.
below in conjunction with embodiment and accompanying drawing, the invention will be further described:
as shown in Figure 1, this segmentation lifting pump comprises center-pole 1 and main lift assemblies; Main lift assemblies comprises seal ring seat 2, piston sleeve 3 and retention device; Seal ring seat 2 is fixed on center-pole 1, the center-pole 1 of corresponding seal ring seat 2 upper end is set with can centrally bar 1 slide piston sleeve 3; Liquid passage 4 was formed between piston sleeve 3 inwall and center-pole 1 outer wall; Seal ring seat 2 upper end is provided with sealing surface 5, and piston sleeve 3 lower end is provided with can mate seat in upper sealing surface 5 and blocked the lower sealing surface 6 of liquid passage 4; The center-pole 1 of corresponding piston sleeve 3 upper end is fixed with and can stops piston sleeve 3 upward sliding but the retention device not blocking liquid passage 4.
the present invention is arranged on the middle section position of rod string, is positioned at the intermediate portion of well head to shaft bottom, and be positioned at pump barrel 9 inner, wherein the external diameter of piston sleeve 3 is slightly less than the internal diameter of pump barrel 9; During upstroke, center-pole 1 is carried, piston sleeve 3 realizes sealing by the matching seat of lower sealing surface 6 and upper sealing surface 5 in seal ring seat 2, thus blocks liquid passage 4, and piston sleeve 3 moves with on center-pole 1, thus realizes the lifting of the fluid column of seal ring seat 2 upper end; During down stroke, center-pole 1 moves down and opened liquid passage 4, and then retention device pushes piston sleeve 3 and moves down and complete discharge opeing process by the standing valve of shaft bottom oil well pump; Move back and forth to realize successional segmentation lifting, shared the head of liquid reduced on the oil pump piston of shaft bottom by segmentation lifting, reduce the flexible of rod string, increase piston effective stroke, and improve pump efficiency; By reducing head of liquid, the wastage of each parts of oil well pump being reduced naturally, and improves pump efficiency; Solve underground sucker rod post easily tired, distortion, the problem such as disconnected de-; Alleviate the maximum suspending point loading of aboveground pumping unit, make oil well pump can descend down-hole more depths work.According to realistic well condition, can install the present invention respectively at different well depth place, the head of liquid on the oil pump piston of shaft bottom is shared in segmentation, to improve pump efficiency.
according to actual needs, above-mentioned segmentation lifting pump can be made further optimization and/or improvements:
as shown in Figure 1, segmentation lifting pump also comprises at least one secondary lift assemblies, and secondary lift assemblies is consistent with main lift assemblies structure, and secondary lift assemblies is arranged on the center-pole 1 below corresponding main lift assemblies.Can play auxiliary seal effect like this, thus make main lift assemblies better for shaft bottom oil pump piston shares head of liquid.
as shown in Figure 1, upper sealing surface 5 is the domatic of inside inclined upward, and lower sealing surface 6 is domatic in the outside inclined downward corresponding with upper sealing surface 5.Be convenient to seal ring seat 2 like this and lift piston sleeve 3, the sealing between seal ring seat 2 and piston sleeve 3 can be allowed more reliable simultaneously.
as shown in accompanying drawing 1,2, retention device comprise four blend stops, 7, four blend stops 7 centrally bar 1 even circumferential be fixed on the outer wall of center-pole 1.Like this in down stroke, retention device pushes piston sleeve 3 when moving down, piston sleeve 3 uniform force and not fragile; The flow reducing over liquid passage 4 that simultaneously can be little as far as possible.
as shown in Figure 1, center-pole 1 top is provided with outer connecting thread 8, is provided with outer connecting thread 8 bottom center-pole 1.Be convenient to docking of the present invention and rod string like this.
above technical characteristics constitutes most preferred embodiment of the present invention, and it has stronger adaptability and best implementation result, can increase and decrease non-essential technical characteristics according to actual needs, meet the demand of different situations.
Claims (9)
1. a segmentation lifting pump, is characterized in that comprising center-pole and main lift assemblies; Main lift assemblies comprises seal ring seat, piston sleeve and retention device; Seal ring seat is fixed on center-pole, the center-pole of corresponding seal ring seat upper end is set with can centrally bar slide piston sleeve; Liquid passage was formed between piston sleeve inwall and center-pole outer wall; Seal ring seat upper end is provided with sealing surface, and piston sleeve lower end is provided with can mate seat in upper sealing surface and blocked the lower sealing surface of liquid passage; The center-pole of corresponding piston sleeve upper end is fixed with and can stops piston sleeve upward sliding but the retention device not blocking liquid passage.
2. segmentation lifting pump according to claim 1, it is characterized in that segmentation lifting pump also comprises at least one secondary lift assemblies, secondary lift assemblies is consistent with main lift assemblies structure, and secondary lift assemblies is arranged on the center-pole below corresponding main lift assemblies.
3. segmentation lifting pump according to claim 1 and 2, is characterized in that sealing surface is the domatic of inside inclined upward, and lower sealing surface is domatic in the outside inclined downward corresponding with upper sealing surface.
4. segmentation lifting pump according to claim 1 and 2, is characterized in that retention device comprises four blend stops, and four blend stops centrally bar even circumferential are fixed on the outer wall of center-pole.
5. segmentation lifting pump according to claim 3, is characterized in that retention device comprises four blend stops, and four blend stops centrally bar even circumferential are fixed on the outer wall of center-pole.
6. segmentation lifting pump according to claim 1 and 2, is characterized in that central post top portion is provided with outer connecting thread, is provided with outer connecting thread bottom center-pole.
7. segmentation lifting pump according to claim 3, is characterized in that central post top portion is provided with outer connecting thread, is provided with outer connecting thread bottom center-pole.
8. segmentation lifting pump according to claim 4, is characterized in that central post top portion is provided with outer connecting thread, is provided with outer connecting thread bottom center-pole.
9. segmentation lifting pump according to claim 5, is characterized in that central post top portion is provided with outer connecting thread, is provided with outer connecting thread bottom center-pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610001764.1A CN105484983A (en) | 2016-01-05 | 2016-01-05 | Segmental lifting pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610001764.1A CN105484983A (en) | 2016-01-05 | 2016-01-05 | Segmental lifting pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105484983A true CN105484983A (en) | 2016-04-13 |
Family
ID=55672193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610001764.1A Pending CN105484983A (en) | 2016-01-05 | 2016-01-05 | Segmental lifting pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105484983A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB831394A (en) * | 1957-12-30 | 1960-03-30 | Edward Joseph Sargent | Hydraulic well pump |
| CN1109559A (en) * | 1994-03-26 | 1995-10-04 | 北京市西城区新开通用试验厂 | Multiple junction reciprocating oil pumping device |
| CN201241671Y (en) * | 2008-08-20 | 2009-05-20 | 艾力江·阿布都热依木 | High-efficiency liquid lifting device |
| CN201671601U (en) * | 2010-04-16 | 2010-12-15 | 中国石油天然气股份有限公司 | Oil-lifting pumping-assisting device for pumping well |
| CN202579123U (en) * | 2012-04-28 | 2012-12-05 | 欧阳广成 | Double-acting oil well pump with high discharge capacity |
| RU2012136076A (en) * | 2012-08-21 | 2014-02-27 | Общество с ограниченной ответственностью "Нефтегазовые космические технологии" | SUBMERSIBLE ELECTRONIC UNIT FOR SUBMERSIBLE ELECTRIC MOTOR |
| CN205330938U (en) * | 2016-01-05 | 2016-06-22 | 新疆克拉玛依市采丰实业有限责任公司 | Segmentation lifts pump |
-
2016
- 2016-01-05 CN CN201610001764.1A patent/CN105484983A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB831394A (en) * | 1957-12-30 | 1960-03-30 | Edward Joseph Sargent | Hydraulic well pump |
| CN1109559A (en) * | 1994-03-26 | 1995-10-04 | 北京市西城区新开通用试验厂 | Multiple junction reciprocating oil pumping device |
| CN201241671Y (en) * | 2008-08-20 | 2009-05-20 | 艾力江·阿布都热依木 | High-efficiency liquid lifting device |
| CN201671601U (en) * | 2010-04-16 | 2010-12-15 | 中国石油天然气股份有限公司 | Oil-lifting pumping-assisting device for pumping well |
| CN202579123U (en) * | 2012-04-28 | 2012-12-05 | 欧阳广成 | Double-acting oil well pump with high discharge capacity |
| RU2012136076A (en) * | 2012-08-21 | 2014-02-27 | Общество с ограниченной ответственностью "Нефтегазовые космические технологии" | SUBMERSIBLE ELECTRONIC UNIT FOR SUBMERSIBLE ELECTRIC MOTOR |
| CN205330938U (en) * | 2016-01-05 | 2016-06-22 | 新疆克拉玛依市采丰实业有限责任公司 | Segmentation lifts pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160413 |
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| RJ01 | Rejection of invention patent application after publication |