CN1056436C - Multiple-range oil-well pump - Google Patents
Multiple-range oil-well pump Download PDFInfo
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- CN1056436C CN1056436C CN96103800A CN96103800A CN1056436C CN 1056436 C CN1056436 C CN 1056436C CN 96103800 A CN96103800 A CN 96103800A CN 96103800 A CN96103800 A CN 96103800A CN 1056436 C CN1056436 C CN 1056436C
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Abstract
The present invention relates to a multiple-range oil-well pump which is composed of a multiple-range mechanism (1) and a long stroke oil-well pump (2), wherein the multiple-range mechanism (1) is composed of a fixed component assembly (3), an upper sliding component assembly (5) and a lower sliding component assembly (6); the upper end of the fixed component assembly (3) is connected with an upper oil pipe column; the lower end of the fixed component assembly (3) is connected with a pump cylinder of the long stroke oil-well pump (2); the upper end of the upper sliding component assembly (5) is connected with an upper oil pumping rod column; the lower end of the lower sliding component assembly (6) is connected with the plunger (22) of the long stroke oil-well pump (2), and the upper sliding component assembly 5 and the lower sliding component assembly 6 can relatively slide. The pump directly increases the pumping stroke underground and pumps the oil with long strokes, large pump diameters and large discharge capacity by the self structure. Accordingly, the pumping efficiency, the system efficiency and the service life of the present invention are increased.
Description
The present invention relates to a kind of petroleum production oil well pump, particularly be applicable to times journey oil well pump that can increase the pumping stroke in the down-hole of oil field middle and later periods recover petroleum by self structure.
Oilfield exploitation is to the middle and later periods, and crude oil water containing constantly increases, and for guaranteeing crude output, the measure of taking at present mainly is long stroke, big pump diameter, big discharge capacity oil pumping.Because pump size is subjected to the restriction of well structure size and strength of oil pump rod simultaneously, desire increases discharge capacity, and valid approach is to increase the oil well pump stroke and suitably reduce pump efficiency, system effectiveness and the working life that jig frequency improves oil well pump.For this reason, each oil field is increasing to the demand of the large-scale pumping unit of long stroke, low jig frequency in recent years, and long stroke pumping unit is huge, heavy, the consumption steel are many, cost is high, causes ground investment increasing and installation, maintenance also inconvenient, and oil supply Tanaka's later stage exploits and brings a series of difficulties.In order not change the corollary equipment of former pumping well, promptly do not increase at ground pumping unit stroke, in the well under oil pick-up tube, roofbolt and the immovable situation of downhole tool, directly the self structure by oil well pump increased the purpose that the pumping stroke is realized long stroke, big pump diameter, big discharge capacity oil pumping in the down-hole, and this institute has applied for " times journey oil well pump " patent (patent No. ZL89217899) on October 7th, 1989.In the prior art, except that " times journey oil well pump " patent of this institute, do not find similar techniques so far as yet." times journey oil well pump " patent still belongs to a kind of invention thought and scheme, make it to change into practical product, also need to carry out repetition test and many improvement.
The objective of the invention is to take long stroke according to the oil field middle and later periods, the oil production technology demand of big pump diameter and big discharge capacity oil pumping, at the structure characteristic of this institute patent " times journey oil well pump " and the defective of existence thereof, through long-term test, improvement and perfect, a kind of multiple-range oil-well pump of complete practicability is provided, make it not change the ground pumping unit that former pumping well corollary equipment does not promptly change former pumping well, oil pick-up tube in the well, under the situation of roofbolt and downhole tool, can directly increase the oil well pump of pumping stroke in the down-hole by himself structure, to satisfy the process requirements of oil field middle and later periods recover petroleum.
The objective of the invention is by development, improve and improve special-purpose times journey mechanism and select for use the technological scheme of supporting with it long stroke oil well pump to realize.Concrete scheme is: times journey mechanism is made of the fixed block assembly and the part assembly that moves about; The part assembly that moves about is made of upstream moving part assembly and downstream moving part assembly; Fixed block assembly upper end is connected with the top tubing string that seat hangs over well head, and its lower end directly or by the bottom tubing string is connected with the pump barrel of long stroke oil well pump; Moving part assembly upper end, upstream is connected with the top rod string that is connected with oil pumping polish rod, and moving part assembly lower end, downstream directly or by the bottom rod string is connected with the plunger of long stroke oil well pump, can move about relatively between the moving part assembly of upstream and downstream; Constitute upper and lower two groups " moving-quiet " friction sealed pairs between upstream moving part assembly and the fixed block assembly, constitute upper and lower two groups " moving-moving " friction sealed pairs between downstream moving part assembly and the upstream moving part assembly; Have outlet valve in upstream moving part assembly upper end,, have oily discharge orifice, also have oily discharge orifice in the bottom of downstream moving part assembly in the bottom of upstream moving part assembly having Fill valve on the moving part assembly of upstream and under last " moving-quiet " friction sealed pair; The diameter of upper and lower " moving-quiet " friction sealed pair is respectively Ф
1And Ф
2, the diameter of upper and lower " moving-moving " friction sealed pair is respectively Ф
3And Ф
4, the relation between the diameter of four groups of friction sealed pairs is: Ф
2=Ф
Max, Ф
4=Ф
Min, Ф
1〉=Ф
3Or Ф
1≤ Ф
3The Cheng Yuanli that increases of times journey mechanism is: be formed with oil pocket A between upstream moving part assembly and the fixed block assembly and between upper and lower " moving-quiet " friction sealed pair, be formed with oil pocket B between the moving part assembly of upstream and downstream and between upper and lower " moving-moving " friction sealed pair, the oily discharge orifice of moving part assembly bottom, upstream is communicated with from the bottom with A chamber and B chamber; Fill valve on the moving part assembly of upstream is closed and is done when a times journey oil well pump is done the upstroke motion and opens in the down stroke movement process; Upstream moving part assembly is connected with oil pumping polish rod by sucker rod, and its stroke is pumping unit stroke S
MachineDownstream moving part assembly is connected with the long stroke oil pump plunger piston, and its stroke is long stroke oil well pump stroke S
PumpUpstream moving part assembly is with stroke S
MachineWhen doing the upstroke motion with respect to the fixed block assembly, Fill valve is closed, and the fluid that is enclosed in the A chamber can only shift in the B chamber, thereby promotes downstream moving part assembly with stroke S
RMove upward with respect to upstream moving part assembly, according to connecting the incompressible principle of tube device inner sealing liquid, the fluid amount that reduces in the A chamber equals the fluid amount of increase in the B chamber, so relation π (Ф is arranged
2 2-Ф
1 2) S
Machine/ 4=π (Ф
3 2-Ф
4 2) S
R/ 4, i.e. S
R=S
Machine(Ф
2 2-Ф
1 2)/(Ф
3 2-Ф
4 2), and downstream moving part assembly is S with respect to the stroke of fixed block assembly
PumpShould satisfy and concern S
Pump=S
Machine+ S
RThereby, realized that times journey mechanism increases the purpose of journey.In addition, in order to reduce the descending resistance of upstream and downstream moving part assembly in making the down stroke movement process, can increase by one group of " moving-quiet " friction sealed pair, its diameter Ф in moving part assembly bottom, downstream and fixed block assembly bottom
5Satisfy relation Ф
5=Ф
4, and fixed block assembly bottom has oily discharge orifice.
The present invention compared with prior art has following advantage and good effect: rely on self structure, utilize the incompressible character of liquid, dispose the plunger of rational different cross-sectional--the friction sealed pair of pump barrel, constitute times journey oil well pump of compact structure, favorable working performance, in oil well, realize increasing automatically journey, improve system effectiveness, realize the big discharge capacity extract of long stroke with former well short stroke pumping unit, can fully excavate the potentiality of now widely used conventional type pumping unit, reduce the ground installation investment cost; Times journey mechanism working medium of times journey oil well pump directly adopts well liquid, and is furnished with compensation mechanism, the automatic compensation after the assurance working medium is missed in mechanism and the selflubricating of each friction sealed pair, adopt rational in infrastructure, high-quality and efficient Fill valve and buffer etc., select the friction pair of corrosion-proof wear-resistant material and surface treatment method and reliable gap width for use, and according to the different swabbing parameter of oil well actual conditions reasonable disposition and pipe, roofbolt etc., with guarantee times journey oil well pump efficient in oil well, steadily, long lifetime ground work; Utilize the Cheng Zuoyong that increases of times journey oil well pump, at ground pumping unit stroke is under 2.1～3m situation, do not change the conventional sucker rod pumping equipment that uses of oil well, can make effective working stroke of down-hole long stroke oil well pump be increased to 5.2～6.5m, its lifting rate is enhanced about more than once, and operating life with now use deep-well pump identical: with use the large-scale pumping unit of long stroke relatively, its reducer output shaft moment of torsion can descend significantly, has certain energy-saving effect, in suitable with the use lifting rate, small-sized electric submersible pump relatively, its operation cost can reduce greatly, can save a large amount of supporting purchase commoditys of using simultaneously, has high economic benefit and vitality.
The present invention has adopted 2 accompanying drawings, wherein
Fig. 1 is a kind of principle schematic of the present invention;
Fig. 2 is a kind of example structure schematic representation of the present invention.
Technology contents of the present invention further is described as follows in detail by the following examples and accompanying drawing thereof:
See figures.1.and.2, the present invention is made of times journey mechanism (1) and long stroke oil well pump (2); Times journey mechanism (1) is made of the fixed block assembly (3) and the part assembly (4) that moves about; The part assembly (4) that moves about is made of upstream moving part assembly (5) and downstream moving part assembly (6); Fixed block assembly (3) upper end is connected with the top tubing string that seat hangs over well head, and its lower end directly is connected with the pump barrel (21) of long stroke oil well pump (2) or connects by bottom tubing string (7); Upstream moving part assembly (5) upper end is connected with the top rod string that links to each other with oil pumping polish rod, downstream moving part assembly (6) lower end directly is connected with the plunger (22) of long stroke oil well pump (2) or connects upstream and downstream moving part assembly (5 by bottom rod string (8); 6) can move about relatively between; Constitute upper and lower two groups " moving--quiet " friction sealed pairs (53,302:57,306) between upstream moving part assembly (5) and the fixed block assembly (3), constitute upper and lower two groups " moving--move " friction sealed pairs (61,55 between downstream moving part assembly (6) and the upstream moving part assembly (5); 63,58); Has outlet valve (51) in upstream moving part assembly (5) upper end, go up and have Fill valve (54) under (53,302) at upstream moving part assembly (5) in last " move--quiet " friction sealed pair, have oily discharge orifice (561) in the bottom of upstream moving part assembly (5), have oily discharge orifice (641) in the bottom of downstream moving part assembly (6); Upper and lower " moving--quiet " friction sealed pair (53,302; 57, diameter 306) is respectively Ф
1And Ф
2, upper and lower " moving--moving " friction sealed pair (61,55; 63, diameter 58) is respectively Ф
3And Ф
4, four groups of friction sealed pairs (53,302; 57,306; 61,55; 63, the relation between the diameter 58) is Ф
2=Ф
Max, Ф
4=Ф
Min, Ф
1〉=Ф
3Or Ф
1≤ Ф
3
See figures.1.and.2, in order to reduce upstream and downstream moving part assembly (5; 6) the descending resistance in making the down stroke movement process can increase by one group of " moving--quiet " friction sealed pair (63,308) in moving part assembly (6) bottom, downstream and fixed block assembly (3) bottom, its diameter Ф
5Satisfy and concern Ф
5=Ф
4, and fixed block assembly (3) bottom and on friction sealed pair (63,308), have oily discharge orifice (312).
With reference to Fig. 2 and Fig. 1, the fixed block assembly (3) of times journey mechanism (1) is by oil connection (301), last pump barrel (302), pump barrel upper connection (303), urceolus (304), pump barrel middle joint (305), following pump barrel (306), pump barrel lower contact (307) and also can be connected in series formation successively by joint (309) at the bottom of end pump barrel (308) and the pump barrel; Wherein, urceolus (304) internal diameter is identical with following pump barrel (306) internal diameter, adopt pump barrel middle joint (305) and sleeve (310) to be tightly connected between urceolus (304) and the following pump barrel (306), adopt union assembly (311) to be connected between urceolus (304) and the pump barrel middle joint (305), between pump barrel middle joint (305) and the following pump barrel (306) for being threaded, all be threaded between other fixed block, oil connection (301) is connected with the top oil string thread, joint (309) directly is connected with the pump barrel upper connection (23) of long stroke oil well pump (2) or connects by bottom tubing string (7) at the bottom of pump barrel lower contact (307) or the pump barrel, and pump barrel lower contact (307) has friction sealed pair (63,308) has oily discharge orifice (312) under the situation; The part assembly (4) that moves about of times journey mechanism (1) is made of upstream moving part assembly (5) and downstream moving part assembly (6): upstream moving part assembly (5) is by outlet valve (51), upper connection (52), upper plug (53), Fill valve (54), last pump barrel (55), transition joint (56), lower plunger (57) and following pump barrel (58) and gland (59) are gone here and there successively, and connect formation, wherein, lower plunger (57) and following pump barrel (58) also connect, promptly descend pump barrel (58) to be sleeved in the lower plunger (57), transition joint (56) and gland (59) are threaded with the top and bottom of lower plunger (57) respectively, meanwhile, transition joint (56) and gland (59) will descend the top and bottom of pump barrel (58) to compress again respectively, all be threaded between other upstream moving part, the valve bonnet (511) of outlet valve (51) is threaded with the top rod string, transition joint (56) has oily discharge orifice (561), in addition, Fill valve (54) is by valve body (541), valve ball (542), valve seat (543), valve base joint (544), push rod (545), stage clip (546) and pin (547) constitute, valve body (541) be valve bonnet be again jointing, be connected with last pump barrel (55) with the upper plug (53) of upstream moving part assembly (5) respectively by the two ends screw thread, valve body (541) has axial oil discharge orifice (548) and radially oily discharge orifice (549) simultaneously, the well liquid of pumping enters the E chamber through axial oil discharge orifice (548) by the C chamber, also has radially oily discharge orifice (550) on the valve base joint (544), when the A cavity pressure is lower than the C cavity pressure, well liquid can enter the A chamber through the radially oily discharge orifice (549) of valve ball (542) and valve body (541) by the C chamber by the radially oily discharge orifice (550) of valve base joint (544), the base (551) of push rod (545) has chute (552), be connected with valve base joint (544) by the pin (547) that crosses chute, push rod (545) can only move axially under the effect of the upper plug (61) of stage clip (546) and downstream moving part assembly (6), instantly the base (551) that part assembly (6) overtravel of moving about moves to push rod (545) can be gone up top push rod (545) and lay down the A cavity pressure to back down valve ball (542) when locating; Downstream moving part assembly (6) is connected in series formation successively by upper plug (61), plunger upper connection (62), lower plunger (63) and plunger lower contact (64), all be threaded between all downstream moving parts, plunger upper connection (62) is a cone, the transition joint (56) of itself and upstream moving part assembly (5) constitutes buffer, to prevent the collision of downstream moving part assembly (6), plunger lower contact (64) directly is connected with upper travelling valve (24) valve bonnet (241) of long stroke oil well pump (2) or connects by bottom rod string (8), and plunger lower contact (64) has oily discharge orifice (641); The upper plug (53) of upstream moving part assembly (5) and lower plunger (57) constitute upper and lower " moving--quiet " friction sealed pair (53,302 with the last pump barrel (302) of fixed block assembly (3) and following pump barrel (306) respectively; 57,306), downstream moving part assembly (6) constitutes upper and lower " moving--moving " friction sealed pair (61,55 with the last pump barrel (55) of upstream moving part assembly (5) and following pump barrel (58) respectively by upper plug (61) and lower plunger (63); 63,58), the lower plunger (63) of downstream moving part assembly (6) also can constitute " moving--quiet " friction sealed pair (63,308) with the end pump barrel (308) of fixed block assembly (3); Between upstream moving part assembly (5) and fixed block assembly (3) and upper and lower " moving--quiet " friction sealed pair (53,302; 57, be formed with oil pocket A 306), at upstream and downstream moving part assembly (5; 6) between and upper and lower " moving--moving " friction sealed pair (61,55; 63, be formed with oil pocket B 58), the oily discharge orifice (561) in the upstream moving part transition joint (56) is communicated with from the bottom with A chamber and B chamber; At upstream and downstream moving part assembly (5; 6) be formed with oil pocket C between the lower travelling valve (25) of inner chamber and upstream moving part outlet valve (51) and long stroke oil well pump (2); Between the lower travelling valve (25) of long stroke oil well pump (2) and standing valve (26), be formed with oil pocket D; On upstream moving part outlet valve (51), be oil pocket E.
The working procedure of times journey oil well pump is: in the upstroke process, drag down at pumping unit power, upstream moving part assembly (5) with respect to fixed block assembly (3) with stroke S
MachineMove upward, the A cavity volume reduces, and the A cavity pressure is greater than the C cavity pressure, and Fill valve (54) is closed, sealing fluid in the A chamber shifts to the B chamber, thus promote downstream moving part upper plug (61) and drive downstream moving part assembly (6) with respect to upstream moving part assembly (5) with stroke S
RMove upward, the plunger (22) that downstream moving part assembly (6) then drives long stroke oil well pump (2) with respect to fixed block assembly (3) with stroke S
PumpMove upward, meanwhile, the lower travelling valve (25) of long stroke oil well pump (2) is closed, its plunger (22) the upwards well liquid of lifting backs down upstream moving part outlet valve (51) and enters the E chamber and gone out well head by lifting, the standing valve (26) of long stroke oil well pump (2) is opened under the pump intake pressure effect of pump, and down-hole fluid is inhaled into the D chamber; When the down stroke process began, under the fluid column action of gravity in E chamber, upstream moving part outlet valve (51) cut out to form the hydraulic pressure feedback force and helps rod string descending, at this moment, upstream moving part assembly (5) with respect to fixed block assembly (3) with stroke S
MachineMove downward, the A cavity volume increases, and the A cavity pressure is less than the C cavity pressure, and Fill valve (54) is opened, and replenishes fluid from the C chamber to the A chamber, meanwhile, downstream moving part assembly (6) with respect to upstream moving part assembly (5) with stroke S
RMove downward, the B cavity volume is reduced to and minimizes, downstream moving part assembly (6) then with respect to fixed block assembly (3) with stroke S
PumpMove downward, in this process, the lower travelling valve (25) of long stroke oil well pump (2) is opened rapidly and is allowed D chamber inner fluid enter, when D cavity pressure during greater than the C cavity pressure, the upper travelling valve (24) of long stroke oil well pump (2) is opened, and D chamber inner fluid enters the C chamber, when C cavity pressure during greater than the E cavity pressure, upstream moving part outlet valve (51) is opened, and C chamber inner fluid enters the E chamber, thereby finishes the down stroke process.
Claims (10)
1. a multiple-range oil-well pump has long stroke oil well pump (2), it is characterized in that:
1) has a times journey mechanism (1);
2) times journey mechanism (1) is made of the fixed block assembly (3) and the part assembly (4) that moves about;
3) move about part assembly (4) by upstream moving part assembly (5) and downstream moving part assembly (6) formation;
4) fixed block assembly (3) upper end is connected with the top tubing string that seat hangs over well head, and its lower end is connected with the pump barrel (21) of long stroke oil well pump (2);
5) upstream moving part assembly (5) upper end is connected with the top rod string that links to each other with oil pumping polish rod, and downstream moving part assembly (6) lower end is connected upstream and downstream moving part assembly (5 with the plunger (22) of long stroke oil well pump (2); 6) can move about relatively between;
6) constitute two groups of friction sealed pairs (53,302 between upstream moving part assembly (5) and the fixed block assembly (3); 57,306), constitute two groups of friction sealed pairs (61,55 between downstream moving part assembly (6) and the upstream moving part assembly (5); 63,58);
7) go up and under last friction sealed pair (53,302), have Fill valve (54) at upstream moving part assembly (5), has oily discharge orifice (512 respectively in the upper and lower part of upstream moving part assembly (5), 561), has oily discharge orifice (641) in downstream moving part assembly (6) bottom;
8) four groups of friction sealed pairs (53,302; 57,306; 61,55; 63, corresponding diameter (Ф 58)
1Ф
2Ф
3Ф
4) between relation be Ф
2=Ф
Max, Ф
4=Ф
Min, Ф
1〉=Ф
3Or Ф
1≤ Ф
3
2. according to described times of journey oil well pump of claim 1, it is characterized in that also can constituting between downstream moving part assembly (6) and the fixed block assembly (3) one group of friction sealed pair (63,308), in fixed block assembly (3) bottom with on friction sealed pair (63,308), have oily discharge orifice (312), the diameter Ф of friction sealed pair (63,308)
5Satisfy and concern Ф
5=Ф
4
3. according to described times of journey oil well pump of claim 1, it is characterized in that upstream moving part assembly (5) upper end has outlet valve (51).
4. according to described times of journey oil well pump of claim 1, it is characterized in that fixed block assembly (3) by oil connection (301), go up pump barrel (302), pump barrel upper connection (303), urceolus (304), pump barrel middle joint (305), pump barrel (306), pump barrel lower contact (307) and also can be connected in series formation successively down by joint (309) at the bottom of end pump barrel (308) and the pump barrel; Wherein, urceolus (304) internal diameter is identical with following pump barrel (306) internal diameter, adopt pump barrel middle joint (305) and sleeve (310) to be tightly connected between urceolus (304) and the following pump barrel (306), adopt union assembly (311) to be connected between urceolus (304) and the pump barrel middle joint (305), between pump barrel middle joint (305) and the following pump barrel (306) for being threaded, all be threaded between other fixed block, pump barrel lower contact (307) has oily discharge orifice (312) having under friction sealed pair (63, the 308) situation.
5. according to described times of journey oil well pump of claim 1, the oil connection (301) that it is characterized in that fixed block assembly (3) is connected with the top oil string thread, and joint (309) directly is connected with the pump barrel upper connection (23) of long stroke oil well pump (2) or connects by bottom tubing string (7) at the bottom of its pump barrel lower contact (307) or the pump barrel.
6. according to described times of journey oil well pump of claim 1, it is characterized in that upstream moving part assembly (5) is by outlet valve (51), upper connection (52), upper plug (53), Fill valve (54), last pump barrel (55), transition joint (56), lower plunger (57) and following pump barrel (58) and gland (59) are gone here and there successively, and connect formation: wherein, lower plunger (57) and following pump barrel (58) also connect, promptly descend pump barrel (58) to be sleeved in the lower plunger (57), transition joint (56) and gland (59) are threaded with the top and bottom of lower plunger (57) respectively, meanwhile, transition joint (56) and gland (59) will descend the top and bottom of pump barrel (58) to compress again respectively, all be threaded between other upstream moving part, the valve bonnet (511) of outlet valve (51) is threaded with the top rod string, and transition joint (56) has oily discharge orifice (561).
7. according to described times of journey oil well pump of claim 1, it is characterized in that the Fill valve (54) of upstream moving part assembly (5) is made of valve body (541), valve ball (542), valve seat (543), valve base joint (544), push rod (545), stage clip (546) and pin (547); Wherein, valve body (541) be valve bonnet be again jointing, be connected with last pump barrel (55) with the upper plug (52) of upstream moving part assembly (5) respectively by the two ends screw thread, valve body (541) has axial oil discharge orifice (548) and radially oily discharge orifice (549) simultaneously, valve base joint (544) also has radially oily discharge orifice (550), has chute (552) on the base (551) of push rod (545), pin (547) passes chute (552) and is connected with valve base joint (544), and push rod (545) is done the keying of axial motion with control Fill valve (54) under upper plug (61) effect of stage clip (546) and downstream moving part assembly (6).
8. according to described times of journey oil well pump of claim 1, it is characterized in that downstream moving part assembly (6) is connected in series formation successively by upper plug (61), plunger upper connection (62), lower plunger (63) and plunger lower contact (64); All be threaded between all downstream moving parts, plunger lower contact (64) directly is connected with upper travelling valve (24) valve bonnet (241) of long stroke oil well pump (2) or connects by bottom rod string (8), and plunger lower contact (64) has oily discharge orifice (641).
9. according to described times of journey oil well pump of claim 1, it is characterized in that the plunger upper connection (62) of downstream moving part assembly (6) is cone, itself and transition joint (56) the formation buffer of upstream moving part assembly (5) are to prevent the collision of downstream moving part assembly (6).
10. according to described times of journey oil well pump of claim 1, it is characterized in that the upper plug (53) of upstream moving part assembly (5) and lower plunger (57) constitute upper and lower " moving--quiet " friction sealed pair (53,302 with the last pump barrel (302) of fixed block assembly (3) and following pump barrel (306) respectively; 57,306), downstream moving part assembly (6) constitutes upper and lower " moving--moving " friction sealed pair (61,55 with the last pump barrel (55) of upstream moving part assembly (5) and following pump barrel (58) respectively by upper plug (61) and lower plunger (63); 63,58), the lower plunger (63) of downstream moving part assembly (6) also can constitute with the end pump barrel (308) of fixed block assembly (3) ' moving--quiet " friction sealed pair (63,308); Between upstream moving part assembly (5) and fixed block assembly (3) and upper and lower " moving--quiet " friction sealed pair (53,302; 57, be formed with oil pocket A 306), at upstream and downstream moving part assembly (5; 6) between and upper and lower " moving--moving " friction sealed pair (61,55; 63, be formed with oil pocket B 58), the oily discharge orifice (561) in the upstream moving part transition joint (56) is communicated with from the bottom with A chamber and B chamber; At upstream and downstream moving part assembly (5; 6) be formed with oil pocket C between the lower travelling valve (25) of inner chamber and upstream moving part outlet valve (51) and long stroke oil well pump (2); Between the lower travelling valve (25) of long stroke oil well pump (2) and standing valve (26), be formed with oil pocket D; On upstream moving part outlet valve (51), be oil pocket E.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96103800A CN1056436C (en) | 1996-04-15 | 1996-04-15 | Multiple-range oil-well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96103800A CN1056436C (en) | 1996-04-15 | 1996-04-15 | Multiple-range oil-well pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1138667A CN1138667A (en) | 1996-12-25 |
| CN1056436C true CN1056436C (en) | 2000-09-13 |
Family
ID=5118204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96103800A Expired - Fee Related CN1056436C (en) | 1996-04-15 | 1996-04-15 | Multiple-range oil-well pump |
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| Country | Link |
|---|---|
| CN (1) | CN1056436C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316141C (en) * | 2004-01-10 | 2007-05-16 | 中国石油集团钻井工程技术研究院江汉机械研究所 | Under well hydraulic lifter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782060B (en) * | 2009-01-19 | 2012-08-22 | 莫比森(北京)石油天然气技术开发有限公司 | Hydraulic oil pump |
| CN109424529A (en) * | 2017-09-04 | 2019-03-05 | 中国石油化工股份有限公司 | There is the whole liquid oil well pump out of bar lifting |
| CN110131231B (en) * | 2019-06-19 | 2024-01-19 | 重庆水泵厂有限责任公司 | Multifunctional oil supplementing valve for diaphragm pump |
| CN110345054A (en) * | 2019-08-15 | 2019-10-18 | 雪曼圣杰科技有限公司 | The reciprocal liquid raising device of multi-chamber |
| CN114109318B (en) * | 2020-08-27 | 2024-05-07 | 中国石油化工股份有限公司 | Pumping device and method |
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- 1996-04-15 CN CN96103800A patent/CN1056436C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2033863U (en) * | 1987-11-03 | 1989-03-08 | 石油部石油勘探开发科学研究院机械所 | Long stroke oil-well pump |
| CN2060483U (en) * | 1989-10-07 | 1990-08-15 | 中国石油天然气总公司江汉机械研究所 | Multiplication oil-well pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316141C (en) * | 2004-01-10 | 2007-05-16 | 中国石油集团钻井工程技术研究院江汉机械研究所 | Under well hydraulic lifter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1138667A (en) | 1996-12-25 |
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