CN2866900Y - Efficient energy-saving rod oil-well pump - Google Patents
Efficient energy-saving rod oil-well pump Download PDFInfo
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- CN2866900Y CN2866900Y CN 200520114355 CN200520114355U CN2866900Y CN 2866900 Y CN2866900 Y CN 2866900Y CN 200520114355 CN200520114355 CN 200520114355 CN 200520114355 U CN200520114355 U CN 200520114355U CN 2866900 Y CN2866900 Y CN 2866900Y
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Abstract
The utility model discloses a highly effective and energy-saving sucker-rod pumping comprising a polish rod, an oil pipe, a pump barrel, a travelling valve, a plunger, a sealed polish rod, an uncoupling device, a packoff nipple, a standing valve and a standing valve base, wherein the pump barrel is connected with the upper portion of the oil pipe, the standing valve base is positioned on the upper portion of the pump barrel and interconnected with each other. The plunger is positioned in the pump barrel and is movable up and down, whose upper portion is connected with the sealed polish rod. The travelling valve is seated on the plunger and is arranged under the standing valve base. The uncoupling device is used for connecting or disconnecting with the polish rod and the sealed polish rod. The packoff nipple is connected with the standing valve base, and the seale polish rod can move up and down through a central hole thereon. As the plunger contacts the formation crude directly for a long period, an upward force is applied on the plunger, and realizes the reducing of the upward-stroke load on the polish rod and saving energy of the pumping unit. As the oil inlet valve is a travelling valve, the increase of efficiency of pump is realized by the double actionof the upward inertia force of the formation fluid and the active downward capture force of the plunger, thereby increasing the efficiency of the pumping unit system.
Description
Affiliated technical field
The utility model relates to that the oil field rod pumping pump is energy-conservation, Efficiency of Sucker Rod pumps improves and pumping unit system efficient improves particularly a kind of energy-efficient rod pumping pump.
Background technique
All oil field statistics from the whole world, nearly 80% oil well adopt the sucker-rod pumping machine to produce, and China has 92% oil well use sucker-rod pumping machine especially.Yet sucker-rod pumping machine system effectiveness is generally very low at present, from the foreign statistic data, pumping unit system efficient has only 28%～29%, and the pumping unit system efficient of more than 70,000 mouthful of well of China has only 25.96%, the oil-field oil pumper system effectiveness that has on average has only about 20%, and the pumping unit system efficient of even more serious is part oil well is less than 10%.How realizing energy-conservation under the prerequisite that satisfies the field output demand and improving sucker-rod pumping machine system effectiveness is the key subjects of pendulum in face of engineers and technicians.
People are successively doing a large amount of work aspect the improvement of sucker-rod pumping machine, motor improvement and the research of electric controlled energy saving device for this reason, and have obtained certain effect, and pumping unit system efficient also increases.Pumping unit system efficient brings up to 29.4% after 1065 mouthfuls of oil well applications new technologies of California, USA; Pumping unit system efficient brings up to 28.74% after 69 mouthfuls of oil well applications new technologies of China's Daqing oil field.
Chinese patent ZL99109780.7 or its U.S. Pat 6640896B1 of the same clan disclose a kind of rod pump mechanical oil production technology parameter determination method, it has proposed the various power calculation methods of pumping unit all system first, can calculate under the various hole condition conditions, the pumping unit system efficient under the various oil production technology parameters combination, optimizing the high or the most higher oil production technology parameters combination of system effectiveness, thereby can improve sucker-rod pumping machine system effectiveness significantly.From the field conduct situation, implement this patent after most of oil well still can maintain original output, but because jig frequency reduces and to have caused many oil well outputs to descend or producing fluid level rises, this is the unacceptable fact to patent applying unit oil recovery factory.
Can't realize improving in real time the fact of pumping unit system efficient according to change of production at present technology, patent of invention 200510079999.4 discloses and can change method and the device that improves pumping unit system efficient in real time according to oil well output, utility model patent 200520110861.1 discloses the multistage jig frequency controlling device of pumping unit, patent of invention 200510083838.2 discloses pumping unit stroke regulating method and device, and utility model patent 200520113709.9 discloses pumping unit stroke controlling device.
People improve in the pumping unit system Study on Efficiency carrying out, and seldom relate to rod pumping pump and how to realize energy-conservationly, that is to say never the rod pumping pump that surpasses one-hundred-year history as energy-conservation breach.Since rod pumping pump was born before more than hundred years, its improvement was primarily aimed at the different problems of different field produces appearance and carries out.There are the problem of gases affect and sand production problem successively to develop gas prevention pump at oil well, as Chinese patent 88220987.6,93210518.1,00204557.5,00234833.0,01228545.5 and sand control gas prevention pump, as Chinese patent 97223746.1,02280546.X, 200320129579.9.
Analyzing the difference of finding these conventional rod pumping pumps and electric submersible pump maximum is, reasonable and the timing in pump setting depth, pumping unit institute wasted work rate (polished rod load) is irrelevant with dynamic oil level or bottom hole flowing pressure, and electric submersible pump institute wasted work rate is relevant with dynamic oil level or bottom hole flowing pressure.
For example certain oil reservoir middle part degree of depth 2000m prevents that dynamic oil level is 100m under first kind of situation to the oil reservoir middle part to rod pumping pump or electric submersible pump, and this moment, bottom hole flowing pressure was big, and pump inlet pressure is big; Dynamic oil level is 1000m under second kind of situation, and this moment, bottom hole flowing pressure was little, and pump inlet pressure is little.
For electric submersible pump, when pump setting depth 2000m, under the shallow situation of first kind of producing fluid level, as long as the height of the clean lifting 100m of FIH, the inlet pressure of electric submersible pump is big, and the power that electric submersible pump is done is little; And under the dark situation of second kind of producing fluid level, then need the height of the clean lifting 1000m of FIH, the inlet pressure of electric submersible pump is little, and the power that electric submersible pump is done is big.
For rod pumping pump, when pump setting depth 2000m, the polished rod load under the dark situation of the situation that first kind of producing fluid level is shallow and second kind of producing fluid level is similar basically, and the power that is consumed is also similar.In the upstroke process, bottom hole flowing pressure can't act on the piston lower end surface, can't produce a power that makes progress to reduce polished rod load.
At first analyze the working principle of rod pumping pump: referring to Fig. 1 and Fig. 2, polished rod 1, sleeve pipe 2, producing fluid level 3, oil pipe 4, oil reservoir 5, artificial bottom of a well 6, standing valve 7, fixed valve base 7-1, valve ball 7-2, valve bonnet 7-3, plunger 8, traveling valve 9, pump barrel 10, under the ground pumping unit drives, polished rod 1 will drive plunger 8 and move up and down, when down stroke, be that polished rod 1 and plunger 8 are when descending, standing valve 7 cuts out, along with plunger 8 continues descending, fluid in the pump chamber between plunger 8 and the standing valve 7 will be compressed, pressure will rise, and will back down traveling valve 9, and the fluid in the pump chamber enters in the oil pipe of plunger more than 8.When upstroke, when promptly polished rod 1 and plunger 8 were up, traveling valve 9 cut out, and pump chamber will become greatly, cause pump chamber pressure to descend, and standing valve 7 is opened, and the fluid that flows out from the stratum flows into pump chamber.Down stroke and upstroke move back and forth, and constantly downhole fluid are extracted on the ground.
Why following surface analysis stratum flowing pressure can't affact the lower end surface of plunger in the upstroke process: in the upstroke process, traveling valve 9 cuts out earlier, along with plunger 8 is up, the expansion of pump chamber volume causes pressure to reduce, this moment, standing valve 7 was opened, lower flow enters pump chamber by standing valve 7, because standing valve 7 has flow resistance, causes lower flow can not be full of pump chamber at once.Certain oil pump footpath 56mm for example, wellhead polish rod stroke 6m, down-hole plunger stroke 5.4m whenever finishes upstroke one time, and the pump chamber volume will change 0.0133m
3, because fluid has flow resistance through standing valve 7, the actual fluid that enters pump chamber will be less than 0.0133m
3If, do not consider that gas overflows from oil, then the pressure in shaft bottom can't be delivered to the lower end surface of plunger 8.Even consider that gas overflows from oil, also bottom hole flowing pressure all can't be delivered to the lower end surface of plunger 8, in a single day there is gas to overflow in addition, then can cause the reduction of pump efficiency.
Someone can propose such query, why not rod pumping pump down to energy-conservation to realize with the mutually suitable degree of depth of producing fluid level? oil field development is early stage, and oil well has the blowing ability, and producing fluid level is at well head, and promptly dynamic oil level is zero, and this moment is without pumping unit.When oil well loses blowing ability or flowing production rate when very low, people usually begin to adopt rod pumping pump to come the lifting wellbore fluids, when just losing the blowing ability, the pump setting depth of rod pumping pump in theory can be very shallow, as long as satisfy reasonable submergence, but consider the influence of gas, the actual conditions that producing fluid level will constantly descend and operating cost is high, people have to from beginning just under the rod pumping pump to enough dark position to eliminate the continuous variation of gas as far as possible to the influence of pump efficiency and adaptation producing fluid level.
At the thickened oil steam-stimulated well production law, people have developed variable-displacement pump, and Fig. 3 has provided variable-displacement pump steam injection process schematic representation.Variable-displacement pump comprises oil pipe 11, sleeve pipe 12, plunger 13, traveling valve 14, pump barrel 15, solid plunger 16, solid plunger lower end surface 17, standing valve 18, packoff nipple 19 and polished rod 20.Following surface analysis variable-displacement pump is how to realize annotating that vapour, big discharge capacity recover the oil, the float amount is recovered the oil.When annotating vapour, plunger 13 and solid plunger 16 connect together and are raised out pump barrel 15, for annotating stripping for down going channel.Figure 4 shows that the working state when adapting to the big discharge capacity of the early stage variable-displacement pump of steam oil production produces, solid plunger 16 is separated with plunger 13, and seat is enclosed on the packoff nipple 19, and its Theoretical flowing capacity depends on and plunger 13 end areas.Fig. 5 is the working state when adapting to steam oil production later stage variable-displacement pump float amount and produce, and this moment, solid plunger 16 linked together with plunger 13 again, and its Theoretical flowing capacity depends on the poor of end area between plunger 13 and the solid plunger 16.
Below weight analysis once variable-displacement pump how to realize that under float amount working state energy-conservation is that polished rod load reduces.Early stage at steam oil production, the big discharge capacity production of general employing, but along with strata pressure reduces and temperature decline, reservoir withdrawal will descend, produce with big discharge capacity and just wasted electric energy this moment, in order to realize energy-conservationly connecing the Theoretical flowing capacity decline that solid plunger 16 has been realized pump in the steam soak later stage by bumping.When upstroke begins, be that plunger 13 and solid plunger 16 are up, traveling valve 14 cuts out, the interior whole fluid column load of oil pipe this moment is all transferred on the polished rod, along with plunger 13 is up, pressure in the annular pump chamber between plunger 16 and the pump barrel 15 descends rapidly, standing valve 18 is opened afterwards, fluid in the sleeve pipe enters above-mentioned annular pump chamber by standing valve 18, because standing valve 18 has flow resistance, the same with the conventional rod pumping pump of preceding surface analysis, the stratum flowing pressure can't affact the lower end surface of plunger 13, but this moment, solid plunger 16 directly contacted for a long time with the interior fluid of sleeve pipe, hydrodynamic pressure in the sleeve pipe is the stratum flowing pressure, therefore solid plunger end face 17 has the upwards thrust that is produced by stratum energy for a long time, thereby has realized the polished rod load reduction, can realize oil pump energy-saving, the raising of pumping unit system efficient and prolonged polished rod working life.
Variable-displacement pump also has a function to have the hydraulic pressure feedback effect exactly in fact in the down stroke process.Its principle is when down stroke, standing valve 18 cuts out, along with plunger 13 continues descending, the pressure of annular pump chamber rises rapidly, cause traveling valve 14 to be opened, the pressure of solid plunger 16 upper-end surfaces is apparently higher than the pressure of lower end surface at this moment, and the former is that the fluid column in the oil pipe forms, and the latter is that the fluid column of oil sets annular space forms.Therefore solid plunger 16 will produce a downward thrust in the descending process, the help sucker rod is descending, so-called hydraulic pressure feedback effect power that Here it is, this hydraulic pressure feedback effect power is very favourable for the thickened oil steam-stimulated production later stage, can reduce the polished rod bending, reduces friction, the minimizing loss of plunger stroke of polished rod and oil pipe and improve pump efficiency.
The model utility content
The utility model proposes a kind of energy-efficient rod pumping pump.The utility model is exactly putting on standing valve and the valve seat with respect to the difference of in the past rod pumping pump maximum, is positioned at the top of pump barrel, and traveling valve and plunger underlying, is positioned at the below of standing valve.The utility model comprises pump barrel, traveling valve, plunger, sealing polished rod, uncoupling mechanism, packoff nipple, standing valve, fixed valve base; Described pump barrel links to each other with the top oil pipe, described fixed valve base is positioned at the top of pump barrel and links together with pump barrel, described standing valve is seated on the fixed valve base, described plunger is positioned at the inside of pump barrel, its top links to each other with the sealing polished rod, described traveling valve is seated on the plunger, described uncoupling mechanism is used to connect or disconnects polished rod and sealing polished rod, described packoff nipple links to each other with fixed valve base, described sealing polished rod can move up and down from the packoff nipple center hole, it is characterized in that described standing valve and the fixed valve base that is attached thereto are positioned at the top of pump barrel, and that described traveling valve and the plunger that is attached thereto are positioned at pump barrel is inner and place the below of fixed valve base.
The utility model can utilize stratum energy, and promptly the stratum flowing pressure produces a thrust that makes progress to plunger, realizes the reduction of the polished rod load of pumping unit upstroke process, thereby reaches the rod pumping pump purpose of energy saving; The utility model can also utilize the double action of up inertial force of oil pipe oil stream and the initiatively downward capture ability of plunger to reach the high filling index of pump chamber, realizes that the pump efficiency of rod pumping pump improves.
Because the traveling valve of model utility and the below that plunger is positioned at standing valve, the lower end surface of plunger contacts with the fluid that flow out on the stratum for a long time, when upstroke, because traveling valve cuts out, the stratum flowing pressure will produce a thrust that makes progress to the plunger lower end surface, thereby can reduce the polished rod load of upstroke process, reach the rod pumping pump purpose of energy saving.Additionally layer fluid is the pump chamber that enters energy-efficient rod pumping pump by traveling valve, and this point is also different fully with conventional oil well pump, enters pump chamber for conventional rod pumping pump formation fluid by standing valve.Because energy-efficient rod pumping pump is by descending traveling valve influent stream body, no longer need pressure reduction ability influent stream body as conventional rod pumping pump, but utilized the up inertial force of oil pipe oil stream and the double action of the initiatively downward capture ability of plunger, realized that the high filling index of pump chamber and pump efficiency improve.
In addition because the oiling valve of a kind of energy-efficient rod pumping pump of the utility model is a traveling valve, the descending beginning of plunger moment opens at once as the traveling valve of oiling valve, it is descending moment of plunger, traveling valve can not be immediately under action of inertia and the plunger DL synchronization, different with the oil-feed standing valve of conventional rod pumping pump, the oil-feed standing valve of conventional rod pumping pump needs pressure reduction just can open, so the oiling valve of a kind of energy-efficient rod pumping pump of the utility model is opened more timely.When the up beginning of plunger moment, traveling valve as the utility model oiling valve cuts out immediately, be that traveling valve is still downward in action of gravity, plunger is swerved up, under two power comprehensive functions in opposite directions, the very fast seat of traveling valve is enclosed on the valve seat, and the oil-feed standing valve of conventional rod pumping pump is to cut out under the self gravitation effect, so the oiling valve of a kind of energy-efficient rod pumping pump of the utility model cuts out more rapidly in time.Oiling valve is opened rapidly in time and has been won the time for oil-feed, and oiling valve cuts out rapidly in time to reducing crude oil in the pump chamber and refluxes to miss and won the time, so oiling valve opens to cut out in time and also can improve pump efficiency.
Description of drawings
Fig. 1 is conventional rod pumping pump schematic representation;
Fig. 2 is the local enlarged diagram of the A of Fig. 1;
Fig. 3 is a variable-displacement pump steam injection process schematic representation;
Fig. 4 is the big discharge capacity of variable-displacement pump working state schematic representation when producing;
Working state schematic representation when Fig. 5 is the production of variable-displacement pump float amount;
Fig. 6 is a kind of energy-efficient rod pumping pump schematic representation of the utility model.
Embodiment
Fig. 6 is a kind of energy-efficient rod pumping pump schematic representation of the utility model.Energy-efficient rod pumping pump comprises polished rod 21, sleeve pipe 22, producing fluid level 23, oil pipe 24, artificial bottom of a well 26, traveling valve 27, plunger lower end surface 28, plunger 29, pump barrel 30, sealing polished rod 31, packoff nipple 32, standing valve 33, uncoupling mechanism 34, fixed valve base 35, pump chamber 36, traveling valve passage 37, standing valve passage 38.Described pump barrel 30 links to each other with top oil pipe 24; Described fixed valve base 35 is positioned at the top of pump barrel 30 and interconnects; Described standing valve 33 is seated on the fixed valve base 35; Described plunger 29 is positioned at the inside of pump barrel 30, and can be up and down in pump barrel 30, and its plunger 29 tops link to each other with sealing polished rod 31; Described traveling valve 27 is seated on the plunger 29.Described uncoupling mechanism 34 is used to connect or disconnects polished rod 21 and sealing polished rod 31, and described packoff nipple 32 links to each other with fixed valve base 35, and sealing polished rod 31 can move up and down from its center hole.
A kind of energy-efficient rod pumping pump of the utility model is different fully with conventional rod pumping pump on traveling valve and standing valve relative space position, no longer standing valve is placed the pump barrel bottom and traveling valve and plunger are placed the top of standing valve as conventional rod pumping pump, but standing valve 33 and fixed valve base 35 are placed the top of pump barrel 30, and traveling valve 27 and plunger 29 are placed the below of standing valve 33.
Described packoff nipple 32 both can adopt soft seal and 31 sealings of sealing polished rod, also can adopt the sealing means as pump barrel and plunger, smooth surface was processed in packoff nipple inside, with the sealing of realization with the sealing polished rod.
The traveling valve 27 of a kind of energy-efficient rod pumping pump of the utility model and/or standing valve 33 can be made of a plurality of, to reduce the resistance of valve convection cell.
Can adopt a plurality of valve ball modes on the same valve road of a kind of energy-efficient rod pumping pump traveling valve 27 of the utility model and/or standing valve 33, to reduce the possibility of pump leakage.
It is energy-conservation and the raising pump efficiency how following surface analysis utilizes stratum energy to realize once.
Because traveling valve 27 and plunger 29 are positioned at the below of standing valve 33, the lower end surface 28 of plunger 29 contacts with the fluid that flow out on the stratum for a long time, the pressure at 28 places, lower end surface of plunger 29 equals annular space head of liquid and casing pressure sum, when upstroke, because traveling valve 27 cuts out, the pressure at 28 places, plunger lower end surface will produce a thrust that makes progress to it, thereby can reduce the polished rod load of upstroke process, realize the rod pumping pump purpose of energy saving.
Formation fluid enters the pump chamber 36 of energy-efficient rod pumping pump by traveling valve 27, and this point is also different fully with conventional oil well pump, and formation fluid enters pump chamber by standing valve for conventional rod pumping pump.Because a kind of energy-efficient rod pumping pump of the utility model is by descending traveling valve 27 influent stream bodies, no longer need pressure reduction ability influent stream body as conventional rod pumping pump, but the up inertial force of oil pipe oil stream and the double action of the initiatively downward capture ability of plunger have been utilized, realize the high filling index of pump chamber 36, thereby improved pump efficiency.
Because the oiling valve of a kind of energy-efficient rod pumping pump of the utility model is a traveling valve 27, the descending beginning of plunger 29 moment, traveling valve 27 as oiling valve is opened at once, it is descending moment of plunger, because valve ball can not be immediately under action of inertia and the plunger DL synchronization, different with the oiling valve of the standing valve formula of conventional rod pumping pump, the oiling valve of conventional rod pumping pump needs pressure reduction just can open, so the oiling valve of a kind of energy-efficient rod pumping pump of the utility model is opened more rapidly in time.When 29 up beginning moments of plunger, close immediately as the traveling valve 27 of oiling valve, because traveling valve 27 is still downward in action of gravity, plunger is swerved up, under two power comprehensive functions in opposite directions, the very fast seat of traveling valve 27 is enclosed on the valve seat.Different with the standing valve formula oiling valve of conventional rod pumping pump, traveling valve 27 is to cut out automatically under the self gravitation effect, so the oiling valve 27 of a kind of energy-efficient rod pumping pump of the utility model cuts out more rapidly in time.The oiling valve 27 of a kind of energy-efficient rod pumping pump of the utility model is in time opened rapidly, for the time has been won in oil-feed, oiling valve 27 cuts out in time, also won the time, so oiling valve 27 is opened, and to close in time also be one of reason that improves pump efficiency rapidly for reducing the leakage that refluxes of crude oil in the pump chamber 36.
It is descending that a kind of energy-efficient rod pumping pump of the utility model also helps polished rod 21, because the pressure that the sucker rod lower end surface of conventional rod pumping pump is born when down stroke is the pressure in the pump chamber, this pressure equals pit shaft head of liquid and oil pressure sum.And a kind of energy-efficient rod pumping pump of the utility model is when the sucker rod down stroke, the pressure that the sucker rod lower end surface is born when descending is annular space head of liquid and casing pressure sum, this pressure is affirmed the pump chamber pressure less than conventional rod pumping pump, therefore with respect to conventional rod pumping pump, the polished rod 21 of a kind of energy-efficient rod pumping pump of the utility model is descending also easier, also can reduce and rub partially and bending, also help improving pump efficiency.
Because during upstroke, a power that makes progress is born in the plunger lower end surface of a kind of energy-efficient rod pumping pump of the utility model, has reduced polished rod 21 load, has reduced polished rod 21 amount of deformation, this also helps improving pump efficiency.
A kind of energy-efficient rod pumping pump of the utility model can be guaranteed very high pump efficiency because of its unique oil-feed mode, the oil reservoir that therefore not only can adapt to low oil-gas ratio, and can adapt to the oil reservoir of high oil-gas ratio well, also can be fit to the higher heavy crude reservoir of viscosity.
The maximum characteristics of a kind of energy-efficient rod pumping pump of the utility model have utilized stratum energy to help to promote liquid in the pit shaft exactly, have reduced polished rod 21 load, help strengthening pump setting depth, help strengthening submergence.
Because oiling valve opens the variation of force of cutting out, same traveling valve 27 can be designed to the possibility of two valve balls with the leakage of minimizing pump on same traveling valve passage, and the oiling valve of conventional rod pumping pump only designs a row.The fuel-displaced standing valve 33 of energy-efficient rod pumping pump also can be designed to the bivalve spherical structure to the outlet valve that moves about as conventional rod pumping pump in addition.
The utility model is not limited to above-mentioned mode of execution, above-mentioned preferred implementation only is exemplary, those skilled in the art can make the various modifications that are equal to and replacement and various combination, and obtain different mode of executions according to spirit of the present utility model.
Claims (8)
1, a kind of energy-efficient rod pumping pump, it comprises polished rod (21), oil pipe (24), pump barrel (30), traveling valve (27), plunger (29), sealing polished rod (31), uncoupling mechanism (34), packoff nipple (32), standing valve (33), fixed valve base (35); Described pump barrel (30) links to each other with top oil pipe (24), described fixed valve base (35) is positioned at the top of pump barrel (30) and links together with pump barrel (30), described standing valve (33) is seated on the fixed valve base (35), described plunger (29) is positioned at the inside of pump barrel (30), its top links to each other with sealing polished rod (31), described traveling valve (27) is seated on the plunger (29), described uncoupling mechanism (34) is used for connecting or disconnects polished rod (21) and seal polished rod (31), described packoff nipple (32) links to each other with fixed valve base (35), described sealing polished rod (31) can move up and down from packoff nipple (32) center hole, the fixed valve base (35) that it is characterized in that described standing valve (33) and be attached thereto is positioned at the top of pump barrel (30), and that described traveling valve (27) and the plunger (29) that is attached thereto are positioned at pump barrel (30) is inner and place the below of fixed valve base (35).
2, energy-efficient rod pumping pump according to claim 1 is characterized in that described packoff nipple (32) can adopt soft seal and sealing polished rod (31) sealing.
3, energy-efficient rod pumping pump according to claim 1 is characterized in that described packoff nipple (32) inside is processed into smooth surface, forms sealing with sealing polished rod (31).
4, energy-efficient rod pumping pump according to claim 1 is characterized in that described traveling valve (27) is made of a plurality of.
5,, it is characterized in that described standing valve (33) can be made of a plurality of according to claim 1 or 4 described energy-efficient rod pumping pumps.
6, energy-efficient rod pumping pump according to claim 4 is characterized in that adopting on the same valve road of described traveling valve (27) a plurality of valve balls.
7, energy-efficient rod pumping pump according to claim 5 is characterized in that adopting on the same valve road of described standing valve (33) a plurality of valve balls.
8, energy-efficient rod pumping pump according to claim 1 is characterized in that described pump barrel (30) diameter can be inequality with oil pipe (24) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520114355 CN2866900Y (en) | 2005-07-26 | 2005-07-26 | Efficient energy-saving rod oil-well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520114355 CN2866900Y (en) | 2005-07-26 | 2005-07-26 | Efficient energy-saving rod oil-well pump |
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| Publication Number | Publication Date |
|---|---|
| CN2866900Y true CN2866900Y (en) | 2007-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200520114355 Expired - Fee Related CN2866900Y (en) | 2005-07-26 | 2005-07-26 | Efficient energy-saving rod oil-well pump |
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| CN (1) | CN2866900Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939352A (en) * | 2016-10-13 | 2018-04-20 | 中国石油化工股份有限公司 | Oil well based on electric work figure becomes discharge capacity production regulation and control method |
| CN109578256A (en) * | 2018-12-17 | 2019-04-05 | 中船重工中南装备有限责任公司 | Sand-proof oil-well pump |
-
2005
- 2005-07-26 CN CN 200520114355 patent/CN2866900Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939352A (en) * | 2016-10-13 | 2018-04-20 | 中国石油化工股份有限公司 | Oil well based on electric work figure becomes discharge capacity production regulation and control method |
| CN107939352B (en) * | 2016-10-13 | 2020-05-29 | 中国石油化工股份有限公司 | Oil well variable displacement production regulation and control method based on electric diagram |
| CN109578256A (en) * | 2018-12-17 | 2019-04-05 | 中船重工中南装备有限责任公司 | Sand-proof oil-well pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070207 Termination date: 20120726 |