CN101324229A - Downhole automatic control hydraulic oil pumping machine - Google Patents
Downhole automatic control hydraulic oil pumping machine Download PDFInfo
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- CN101324229A CN101324229A CNA2008101407043A CN200810140704A CN101324229A CN 101324229 A CN101324229 A CN 101324229A CN A2008101407043 A CNA2008101407043 A CN A2008101407043A CN 200810140704 A CN200810140704 A CN 200810140704A CN 101324229 A CN101324229 A CN 101324229A
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Abstract
The invention relates to an underground automatic control hydraulic pumping unit, which consists of a hydraulic pumping station, a pump body, an inlet tube, an oil return pipe, an oil pumping tube, a first-level reversing valve, a second-level reversing valve and overflow valve assemble, a cone-way valve as well as an upper piston and a lower piston which are connected together by a piston rod. The pumping unit can realize the petroleum extraction without piston rods and with the depth of 5000m. Taking the extraction depth of 1000m as an example, the oil pumping quantity per day is 275m<3>, which is 10.4 times of that of a beam-pumping unit, simultaneously the energy is saved by 846 percent compared with the beam-pumping unit. As having simple structure, light weight, convenient manufacture, low price and fine skin test performance, the pumping unit is suitable for mass promotion.
Description
Affiliated technical field
The invention belongs to the pumping unit technical field, be specifically related to a kind of by hydraulic power loop and hydraulic control circuit, the downhole automatic control hydraulic oil pumping machine that the reciprocating type double cylinder double acting hydraulic oil cylinder of installing in upright arrangement is constituted.
Background technique
At present, the petroleum production of countries in the world, what generally adopt is beam pumping unit and sucker rod, the oil pumping system equipment that oil well pump is formed, must overcome the idle work that the sucker rod deadweight is brought during oil pumping, be example with CYJY14-6-89HF pumping unit and supporting sucker rod, and technical parameter is as follows:
1. maximum polished rod load 140 KN
2. jig frequency 8,6,4 Min
-1
3. stroke 6,5,4 M
4. adapted power of motor 75 Kw
5. pumping unit net weight 34400 Kg
6.1000M sucker rod net weight 7500 Kg
7. oil well pump net weight 850 Kg
8. day oil pumping amount 20～40 M
3
Though in running, when sucker rod was descending, the adapted motor can self power generation feed back to electrical network, when its drive sucker rod was up, the electric energy that consumed in 24 hours was: 1.08 * 10
5KJ closes 720 Kwh, and calculate by 100,000 such pumping units in the whole nation, 24 hours common consumed powers 7.2 * 10
7Kwh is equivalent to one day generated energy of 4 Three Gorges hydroelectric power plants, and the type pumping unit exists weight big simultaneously, the manufacture cost height, and volume is big, and it is big to take up room, the not high shortcoming of working efficiency.
Aboveground upright hydraulic cylinder type pumping unit, aboveground gear cylinder type pumping unit, its structure characteristic is that sucker rod is arranged, its operation characteristic is that the drive sucker rod is reciprocating, all is the improvement type of beam pumping unit.
Linear electric motor formula pumping unit at present, can only be realized the extraction of shallow-layer oil, and cost an arm and a leg.
Hydraulic piston formula pumping unit, owing to must there be oily-water seperating equipment supporting with it, its manufacture cost is very high, is difficult to promote the use of in enormous quantities.
Hydraulic reciprocating pump formula pumping unit, see except there being working life from the experiment of present down-hole short, and owing to be aboveground hydraulic control, hydraulic oil can not be realized circulation, causes hydraulic oil effectively not cool off, and the oil temperature is high, hydraulic oil pollutes easily, and seal element lost efficacy easily, shortcomings such as easy leakage.
Summary of the invention
The objective of the invention is according to the movement mechanism of liquid in the U-shaped pipe, manufacture and design a kind of sucker rod that do not have, realize the complete circuit of hydraulic oil, low-cost simultaneously, low energy consumption, downhole automatic control hydraulic oil pumping machine efficiently.
For achieving the above object, downhole automatic control hydraulic oil pumping machine of the present invention is made of hydraulic power unit, the pump housing, oil inlet pipe, return tube, oil pick-up tube, power oil pipe, control oil pipe, one-level selector valve, the combination of secondary selector valve relief valve, one-way valve, upper piston, lower piston, piston rod; Four one-way valves, upper piston, lower piston, piston rod, one-level selector valve are arranged in the described pump housing; The described pump housing by upper piston, lower piston, be spaced apart four chambers, be respectively go up power cavity, down power cavity, go up active chamber, active chamber down; Described upper piston links together by piston rod and lower piston; Wherein two one-way valves link to each other with oil pick-up tube, and two one-way valves link to each other with following inlet port with last inlet port respectively in addition; Described one-level commutation valve body has five tubing interfaces, is respectively P mouth, O mouth, B mouth, A
1Mouthful, A
2Mouthful; A wherein
1Mouth, A
2Mouth all communicates with oil pipe, forms the A mouth; Two grooves are arranged on the spool of one-level selector valve, have screw in the valve body in the middle of it, adjusting screw, Regulation spring and steel ball are installed in the screw; It is respectively filler opening, oil outlet, A mouth, B mouth that the combination of described secondary selector valve relief valve has eight mouths, the control mouthful of oiling, oil control mouthful down, control oily return opening, control oil oil outlet, and the outside connection features of described secondary selector valve relief valve combination is that filler opening joins by oil inlet pipe and hydraulic power unit; Described oil outlet joins by return tube and hydraulic power unit; Described A mouth joins by power oil pipe and last power cavity; Described B mouth joins by power oil pipe and following power cavity; The described control mouthful B mouth by control oil pipe and one-level selector valve that oils joins; The described oil down control mouthful A mouth by control oil pipe and one-level selector valve joins; The oily oil outlet of described control joins by the P mouth of control oil pipe and one-level selector valve; The oily return opening of described control joins by the O mouth of control oil pipe and one-level selector valve, its inner connection features be filler opening by oil input channel respectively with the relief valve filler opening, control oily oil outlet, the P mouth communicates; Described oil outlet by back oil road respectively with the O mouth, control oily return opening, the relief valve return opening communicates; The described control mouth that oils communicates with the control chamber that oils; The described control of oil down mouth communicates with following oil control chamber.
Workflow of the present invention is: the hydraulic oil that hydraulic power unit pumps, enter filler opening through oil inlet pipe, and he has three flow directions, and first flow direction is to enter secondary selector valve P mouth through oil input channel; Second flow direction is to flow to the oily oil outlet of control through oil input channel; The 3rd flow direction is through oil input channel, enter the relief valve filler opening, enter the hydraulic oil of secondary selector valve P mouth, flow through this selector valve and A mouth thereof to power oil pipe, enter power cavity, make its volume become big, realize that upper piston drives the piston rod, the lower piston that are connected with it and moves upward together, working chamber volume is diminished, discharge oil, the oil of discharge flows to oil pick-up tube by one-way valve; It is big that following working chamber volume becomes, and the oil in the oil well is inhaled into down in the active chamber through inlet port, one-way valve; Following power cavity volume diminishes, discharge hydraulic oil, the power oil pipe of the hydraulic oil of discharging by being connected with it, flow into return tube through the B of secondary selector valve mouth, O mouth, the hydraulic oil that flows to the oily oil outlet of control flows into coupled control oil pipe, enter the hydraulic oil of relief valve filler opening, directly enter in the relief valve oil suction chamber that communicates with it.
When lower piston moves upward to the spool lower end surface of collision one-level selector valve, because its inertia, continue to move upward to peak, when making spool also move upward to peak, the one-level selector valve commutates for the first time, at this moment enter the hydraulic oil of one-level selector valve through oil inlet pipe, control oil pipe, enter the P mouth of one-level selector valve, through the control mouthful of oiling of the B of one-level selector valve mouth, the combination of control oil pipe, secondary selector valve relief valve, enter the control chamber that oils, make the volume in the control chamber that oils become big, hydraulic oil promotes spool and moves downwards, realizes the commutation first time of secondary selector valve.
After the secondary selector valve commutates for the first time, enter the hydraulic oil of secondary selector valve P mouth, through B mouth, power oil pipe, enter down power cavity, make down the volume of power cavity become big, promotion lower piston and the piston rod that is connected thereof, upper piston move downward together, make the volume of active chamber become big, and the oil in the oil well is in inlet port, one-way valve are inhaled into active chamber; Following working chamber volume diminishes, and discharges oil, and the oil of discharge flows in the oil pick-up tube by one-way valve; The last power cavity volume discharge hydraulic oil that diminishes, the power oil pipe of the hydraulic oil of discharge by being connected with it is through the A of secondary selector valve mouth, O mouth inflow return tube.
When upper piston moves downward the spool upper-end surface of collision one-level selector valve, because its inertia, continue to move downward minimum point, when making spool also move downward minimum point, the one-level selector valve commutates for the second time, at this moment through oil inlet pipe, the control oil pipe enters the hydraulic oil of one-level selector valve, enter the P mouth of one-level selector valve, through the A of one-level selector valve mouth, the control oil pipe, the following oil control mouth of secondary selector valve relief valve combination enters down oil control chamber, makes down the volume change in oil control chamber big, hydraulic oil promotes upwards operation of spool, realize the commutation second time of secondary selector valve, original state is got back to by system, begins to repeat above-described whole action simultaneously.
Downhole automatic control hydraulic oil pumping machine of the present invention has following advantage:
1, adopt the down-hole to control automatically, can realize that the deep layer oil extracts, the degree of depth can reach 5000M; During operation, the hydraulic oil automatic cycle, can effectively cool off hydraulic oil by the ground cooling unit, can effectively filter hydraulic oil by the ground filtrating equipment, improved the working life of hydraulic oil, the sealing reliability of simultaneity factor has also obtained effective lifting, skin test function admirable, long service life.
2, no sucker rod structural design, energy consumption is little, saves operating cost.
3, simple in structure, volume is little, and is in light weight, cheap for manufacturing cost, easily promotes the use of in enormous quantities.
4, big flow output, the efficient height, 7 inches oil wells, during the 1000M degree of depth, flow can reach 275M
3/ day.Adopt the volume adjustable hydraulic pump station, can realize the remote auto control of flow.
Description of drawings
Below in conjunction with accompanying drawing downhole automatic control hydraulic oil pumping machine of the present invention is further described in detail.
Fig. 1 is a principle assumption diagram of the present invention.
Fig. 2 is an one-level selector valve principle assumption diagram of the present invention.
Fig. 3 is a secondary selector valve relief valve combination principle structural drawing of the present invention.
Embodiment
Referring to accompanying drawing, downhole automatic control hydraulic oil pumping machine of the present invention is by hydraulic power unit, the pump housing, oil inlet pipe, return tube, oil pick-up tube, power oil pipe, the control oil pipe, the one-level selector valve, the combination of secondary selector valve relief valve, one-way valve, upper piston, lower piston, piston rod is formed, it is characterized in that one-way valve (2) is arranged in the described pump housing (1), one-way valve (11), one-way valve (25), one-way valve (28), upper piston (9), lower piston (4), piston rod (6), one-level selector valve (5), the described pump housing (1) is by upper piston (9), lower piston (4), being spaced apart four chambers, is respectively to go up power cavity (7), following power cavity (8), last active chamber (10), following active chamber (3); Described upper piston (9) links together by piston rod (6) and lower piston (4); Described one-way valve (2), one-way valve (11) link to each other with oil pick-up tube (14); Described one-way valve (25) links to each other with last inlet port (24); Described one-way valve (28) links to each other with following inlet port (29); Described one-level selector valve (5) has four tubing interfaces, is respectively P mouth (36), O mouth (43), A mouth (50), B mouth (53); A on the described change valve
1Mouth (49), A
2Mouth (54) communicates by oil pipe (52) and A mouth (50); It is respectively groove (38), groove (42) that two grooves are arranged on the described change-over valve core (55); Have screw in the valve body (37) in the middle of it, adjusting screw (39), Regulation spring (40), steel ball (41) are installed in the described screw; Described secondary selector valve relief valve combination (30) has eight mouths, is respectively filler opening (66), oil outlet (57), A mouth (75), B mouth oil (73), the control mouthful (83) that oils, oil control mouthful (80) down, controls oily return opening (61), controls oily oil outlet (71); The outside connection features of described secondary selector valve relief valve combination (30) is that filler opening (66) joins by oil inlet pipe (19) and hydraulic power unit (18); Described oil outlet (57) joins by return tube (20) and hydraulic power unit (18); Described A mouth (75) joins by power oil pipe (26) and last power cavity (7); Described B mouth (73) joins by power oil pipe (27) and following power cavity (8); The described control mouthful (83) that oils is joined by control oil pipe (22) and B mouth (53); The described control of oil down mouthful (80) is joined by control oil pipe (23) and A mouth (50); The oily oil outlet of described control (71) joins by control oil pipe (12) and P mouth (36); The oily return opening of described control (61) joins by control oil pipe (13) and O mouth (43); The inside connection features of described secondary selector valve relief valve combination (30) is that filler opening (66) communicates by oil input channel (67) and relief valve filler opening (68), communicate by oil input channel (67) and P mouth (74), communicate by oil input channel (67), oil duct (70) and the oily oil outlet of control (71); Described oil outlet (57) communicates with relief valve return opening (65) by back oil road (64), communicate with O mouth (81) by oil duct (56), by oil duct (56), described oil duct (89) communicates with the oily return opening of control (61), the described control mouthful (83) that oils communicates with the control chamber (85) that oils by oil duct (82), and the described control of oil down mouthful (80) communicates with the following oily chamber (84) of controlling by oil duct (79).
By Fig. 1, Fig. 2, Fig. 3 as can be known, 1, enter the hydraulic oil of filler opening (66) through oil inlet pipe (19) from hydraulic power unit (18), three flow directions are arranged, first flow direction is to enter P mouth (74) through oil input channel (67); Second flow direction is to flow to control oily oil outlet (71) through oil input channel (67), oil duct (70); The 3rd flow direction is through oil input channel (67), enters relief valve filler opening (68).Enter the hydraulic oil of P mouth (74),, enter power oil pipe (26) through P mouth oil duct (88), A mouth oil duct (76), A mouth (75); The hydraulic oil that flows to the oily oil outlet of control (71) flows into coupled control oil pipe (12); Enter the hydraulic oil of relief valve filler opening (68),, enter relief valve oil suction chamber (86) through oil duct (69).
2, enter the interior hydraulic oil of power cavity (7) from power oil pipe (26), make the volume of power cavity (7) become big, promotion upper piston (9) and the piston rod (6) that is connected thereof, lower piston (4) move upward together, make down active chamber (3) volume become big, suck oil; Last active chamber (10) volume diminishes, and discharges oil; Following power cavity (8) volume diminishes, and discharges hydraulic oil.
3, when lower piston (4) moves upward to the lower end surface (33) of collision spool (55), because its inertia continues to move upward to peak, make spool (55) when also moving upward to peak, one-level selector valve (5) is commutation for the first time.Have groove (38) and groove (42) on the spool (55), retrain the position of rest of spool (55) by adjusting screw (39), Regulation spring (40), steel ball (41).
4, after one-level selector valve (5) commutation, flow into the hydraulic oil of P mouth (36) from control oil pipe (12), oil control mouthful (83), oil duct (82) through oil duct (35), B mouth (53), control oil pipe (22), secondary selector valve relief valve combination (30), enter the control chamber (85) that oils, make the volume in the control chamber (85) that oils become big, spool (78) moves downward, and secondary selector valve (21) is commutation for the first time.
5, after secondary selector valve (21) commutation for the first time, enter the hydraulic oil of P mouth (74), through P mouth oil duct (88), B mouth oil duct (72), B mouth (73), power oil pipe (27), enter down power cavity (8), make down the volume of power cavity (8) become big, promotion lower piston (4) and the piston rod (6) that is connected thereof, upper piston (9) move downward together, make the volume of active chamber (10) become big, suck oil; Following active chamber (3) volume diminishes, and discharges oil; Last power cavity (7) volume diminishes, and discharges hydraulic oil.
6, when upper piston (9) moves downward the upper-end surface (46) of collision spool (55), because its inertia continues to move downward minimum point, make spool (55) when also moving downward minimum point, one-level selector valve (5) is commutation for the second time.
7, after one-level selector valve (5) commutation, from the hydraulic oil of control oil pipe (12) inflow P mouth (36), through oil duct (35), oil duct (34), oil duct (32), A mouth
2(54), following oil control mouthful (80), the oil duct (79) of oil duct (52), A mouth (50), control oil pipe (23), secondary selector valve relief valve combination (30), enter down oil control chamber (84), make down the volume in oil control chamber (84) become big, spool (78) moves upward, and secondary selector valve (21) is commutation for the second time.Original state is got back to by system, begins to repeat the whole actions described in above-mentioned 2,3,4,5,6,7 simultaneously.
8, go up oil interface (16) on one-way valve (11), oil pick-up tube that active chamber (10) is discharged, enter oil pick-up tube (14); The oil that working oil chamber (3) is discharged enters oil pick-up tube (14) through one-way valve (2), oil pick-up tube lower interface (15), realizes that the deep-well of oil extracts.
9, the hydraulic oil of power cavity (8) discharge is got back in the fuel tank of hydraulic power unit (18) through power oil pipe (27), B mouth (73), B mouth oil duct (72), O mouth oil duct (90), O mouth (81), oil duct (56), oil outlet (57), return tube (20) down.
10, when spool (78) when moving downward, following oil control chamber (84) volume diminishes, and discharges hydraulic oil, and the hydraulic oil of discharge is through oil duct (79), oil control mouthful (80) down, control oil pipe (23), A mouth (50), A
1Mouthful (49), oil duct (47), oil duct (44), O mouth (43), control oil pipe (13), control oily return opening (61), oil duct (89), oil duct (56), oil outlet (57), return tube (20), get back in the fuel tank of hydraulic power unit (18); When spool (78) when moving upward, the volume of controlling chamber (85) that oils diminishes, discharge hydraulic oil, the hydraulic oil of discharging through oil duct (82), the control mouthful (83) that oils, control oil pipe (22), B mouth (53), oil duct (48), oil duct (45), oil duct (44), O mouth (43), control oil pipe (13), control oily return opening (61), oil duct (89), oil duct (56), oil outlet (57), return tube (20), get back in the fuel tank of hydraulic power unit (18).
To extract depth H=1000M, extract flow Q=220M below
3/ day is a representative instance, and the design condition and the parameter of the concrete invention main points of downhole automatic control hydraulic oil pumping machine of the present invention is described.
1, design condition: extract depth H=1000M, extract flow Q=275M
3/ day
2, design parameter: the selection of A. hydraulic oil: general work condition environment is selected GB2512-81 YB-N46 antiwear hydraulic oil; Worst cold case environmental selection GB2512-81 YC-N46 low temperature hydraulic oil.
B. select hydraulic power unit: flow Q
0=160L/min pressure P
0=32Mpa power of motor N=92Kw
C. recommend according to " mechanical design handbook ": the oil inlet pipe inner diameter d
1=25mm outer diameter D
1=34mm flow stream velocity V
1=5M/s
D. recommend according to " mechanical design handbook ": the return tube inner diameter d
2=25mm outer diameter D
2=34mm flow stream velocity V
2=5M/s
E. recommend according to " mechanical design handbook ": the oil pick-up tube inner diameter d
3=32mm outer diameter D
3=38mm flow stream velocity V
3=4M/s
F. oil pipe Placement: flange connects, sealing means: with German-style metal lensring or seal with O ring
G. recommend according to " mechanical design handbook ": cylinder diameter d
4=90mm outer diameter D
4=118mm semi-ring formula Placement
H. piston rod path d
5The big footpath D of=25mm
5=40mm sealing means: Y
XSeal ring sealing, and piston Placement: the semi-ring formula is connected
I. piston stroke h=1M adopts Y with inner wall of cylinder
XSeal ring or (Y
XSeal ring+piston ring) seal form
J. piston reciprocal time n=26min
-1
3, design parameter is checked:
A. the hydraulic power unit delivery pressure determines
By Δ P
1=7.2VL/d
2
Δ P
2=∑ Δ P
Valve
Δ P
3=Δ P
Gesture
ΔP
4＝∑ΔP
M
ΔP
M＝μP′πd′h
1S
-1
ΔP＝∑ΔP
S
1/S
2＝(d
4 2-D
5 2)/d
4 2
And P=Δ P (S
1/ S
2)≤P
0
With Δ P in the last formula
1---the pressure loss (Kg/cm of straight tube
2)
Δ P
2---the pressure loss (Kg/cm of hydrovalve
2)
Δ P
3---the potential energy (Kg/cm of liquid in vertical straight tube
2)
Δ P
4---the frictional force (Kg/cm in the oil hydraulic cylinder between the moving element
2)
Δ P---loss of total pressure (Kg/cm
2)
S
1---piston end area (cm is arranged
2)
S
2---no piston end area (cm
2)
P---the minimum working pressure power (Kg/cm of system
2)
P
0---rated working pressure (Kg/cm
2)
The flow velocity V=5M/s of V---liquid in straight tube
L---length of straight pipe L=1000M
D---straight tube diameter d=25mm
Δ P
Valve---the pressure loss (Kg/cm of single hydrovalve
2)
Δ P
Gesture---the potential energy (Kg/cm of liquid in vertical straight tube
2)
Δ P
M---the pressure loss (Kg/cm of liquid each point in oil hydraulic cylinder
2)
μ---friction factor is got μ ≈ 0.01
P '---sealing part working pressure (Kg/cm
2)
The diameter of d '---sealing part (cm)
h
1---the effective height (cm) of sealing
d
4---cylinder diameter d
4=90mm
D
5---the big footpath D of piston rod
5=40mm
Finish the required minimum working pressure power of the 1000M oil pumping degree of depth as can be known:
P＝307.8Kg/cm
2＝30.78Mpa
Get P
0=32Mpa
B. the strength check of piston rod minimum diameter
By d=√ (4P π
-1[σ]
-1) [σ]=σ
b/ n=6327Kg/cm
2
D=19mm as can be known
Get d=25mm
C. hydraulic power unit output flow Q
0Check
By Q
0=Q (S
1/ S
2)/η
S
1/S
2＝(d
4 2-D
5 2)/d
4 2
In the formula: Q---flow Q=275M
3/ day
η---system total efficiency η=0.96
Q as can be known
0=229.2M
3/ day=159.1L/min
Get Q
0=160L/min
4, be that the performance of example and CYJY14-6-89HF type beam pumping unit is compared as follows table to extract degree of depth 1000M:
The performance comparison sheet
| The present invention | CYJY14-6-89HF | |
| Daily flow | 275M 3 | 26.5M 3 |
| Energy consumption/1000M 3 | 8029Kwh | 67924Kwh |
| Can loss- |
1 | 8.46 |
| The maximum degree of depth that extracts | 5000M | 1500M |
| Gross weight | 16342Kg | 42700Kg |
Claims (11)
1, a kind of downhole automatic control hydraulic oil pumping machine, it is by hydraulic power unit, the pump housing, oil inlet pipe, return tube, oil pick-up tube, power oil pipe, the control oil pipe, the one-level selector valve, the combination of secondary selector valve relief valve, one-way valve, upper piston, lower piston, piston rod is formed, it is characterized in that one-way valve (2) is arranged in the described pump housing (1), one-way valve (11), one-way valve (25), one-way valve (28), upper piston (9), lower piston (4), piston rod (6), one-level selector valve (5), the described pump housing (1) is by upper piston (9), lower piston (4), being spaced apart four chambers, is respectively to go up power cavity (7), following power cavity (8), last active chamber (10), following active chamber (3); Described upper piston (9) links together by piston rod (6) and lower piston (4); Described one-way valve (2), one-way valve (11) link to each other with oil pick-up tube (14); Described one-way valve (25) links to each other with last inlet port (24); Described one-way valve (28) links to each other with following inlet port (29); Described one-level selector valve (5) has four tubing interfaces, is respectively P mouth (36), O mouth (43), A mouth (50), B mouth (53); A on the described change valve
1Mouth (49), A
2Mouth (54) communicates by oil pipe (52) and A mouth (50); It is respectively groove (38), groove (42) that two grooves are arranged on the described change-over valve core (55); Have screw in the valve body (37) in the middle of it, adjusting screw (39), Regulation spring (40), steel ball (41) are installed in the described screw; Described secondary selector valve relief valve combination (30) has eight mouths, is respectively filler opening (66), oil outlet (57), A mouth (75), B mouth (73), the control mouthful (83) that oils, oil control mouthful (80) down, controls oily return opening (61), controls oily oil outlet (71); The outside connection features of described secondary selector valve relief valve combination (30) is that filler opening (66) joins by oil inlet pipe (19) and hydraulic power unit (18); Described oil outlet (57) joins by return tube (20) and hydraulic power unit (18); Described A mouth (75) joins by power oil pipe (26) and last power cavity (7); Described B mouth (73) joins by power oil pipe (27) and following power cavity (8); The described control mouthful (83) that oils is joined by control oil pipe (22) and B mouth (53); The described control of oil down mouthful (80) is joined by control oil pipe (23) and A mouth (50); The oily oil outlet of described control (71) joins by control oil pipe (12) and P mouth (36); The oily return opening of described control (61) joins by control oil pipe (13) and O mouth (43); The inside connection features of described secondary selector valve relief valve combination (30) is that filler opening (66) communicates by oil input channel (67) and relief valve filler opening (68), communicate by oil input channel (67) and P mouth (74), communicate by oil input channel (67), oil duct (70) and the oily oil outlet of control (71); Described oil outlet (57) communicates with relief valve return opening (65) by back oil road (64), communicate with O mouth (81) by oil duct (56), by oil duct (56), described oil duct (89) communicates with the oily return opening of control (61), the described control mouthful (83) that oils communicates with the control chamber (85) that oils by oil duct (82), and the described control of oil down mouthful (80) communicates with the following oily chamber (84) of controlling by oil duct (79).
2, downhole automatic control hydraulic oil pumping machine according to claim 1, it is characterized in that entering through oil inlet pipe (19) hydraulic oil of filler opening (66) from hydraulic power unit (18), three flow directions are arranged, and first flow direction is to enter P mouth (74) through oil input channel (67); Second flow direction is to flow to control oily oil outlet (71) through oil input channel (67), oil duct (70); The 3rd flow direction is through oil input channel (67), enters relief valve filler opening (68), enters the hydraulic oil of P mouth (74), through P mouth oil duct (88), A mouth oil duct (76), A mouth (75), enters power oil pipe (26); The hydraulic oil that flows to the oily oil outlet of control (71) flows into coupled control oil pipe (12); Enter the hydraulic oil of relief valve filler opening (68),, enter relief valve oil suction chamber (86) through oil duct (69).
3, downhole automatic control hydraulic oil pumping machine according to claim 2, it is characterized in that entering the interior hydraulic oil of power cavity (7) from power oil pipe (26), make the volume of power cavity (7) become big, promotion upper piston (9) and the piston rod (6) that is connected thereof, lower piston (4) move upward together, make down active chamber (3) volume become big, suck oil; Last active chamber (10) volume diminishes, and discharges oil; Following power cavity (8) volume diminishes, and discharges hydraulic oil.
4, downhole automatic control hydraulic oil pumping machine according to claim 3, it is characterized in that when lower piston (4) moves upward to the lower end surface (33) of collision spool (55), because its inertia, continue to move upward to peak, make spool (55) when also moving upward to peak, one-level selector valve (5) is commutation for the first time; Have groove (38) and groove (42) on the spool (55), retrain the position of rest of spool (55) by adjusting screw (39), Regulation spring (40), steel ball (41).
5, downhole automatic control hydraulic oil pumping machine according to claim 4, after it is characterized in that one-level selector valve (5) commutation, flow into the hydraulic oil of P mouth (36) from control oil pipe (12), oil control mouthful (83), oil duct (82) through oil duct (35), B mouth (53), control oil pipe (22), secondary selector valve relief valve combination (30), enter the control chamber (85) that oils, make the volume in the control chamber (85) that oils become big, spool (78) moves downward, and secondary selector valve (21) is commutation for the first time.
6, downhole automatic control hydraulic oil pumping machine according to claim 5, after it is characterized in that secondary selector valve (21) commutation for the first time, enter the hydraulic oil of P mouth (74), through P mouth oil duct (88), B mouth oil duct (72), B mouth (73), power oil pipe (27), enter down power cavity (8), make down the volume of power cavity (8) become big, promotion lower piston (4) and the piston rod (6) that is connected thereof, upper piston (9) move downward together, make the volume of active chamber (10) become big, suck oil; Following active chamber (3) volume diminishes, and discharges oil; Last power cavity (7) volume diminishes, and discharges hydraulic oil.
7, downhole automatic control hydraulic oil pumping machine according to claim 6, it is characterized in that when upper piston (9) moves downward the upper-end surface (46) of collision spool (55), because its inertia, continue to move downward minimum point, make spool (55) when also moving downward minimum point, one-level selector valve (5) is commutation for the second time.
8, downhole automatic control hydraulic oil pumping machine according to claim 7, it is characterized in that one-level selector valve (5) commutation after, flow into the hydraulic oil of P mouth (36) from control oil pipe (12), through oil duct (35), oil duct (34), oil duct (32), A
2Following oil control mouth (80), the oil duct (79) of mouth (54), oil duct (52), A mouth (50), control oil pipe (23), secondary selector valve relief valve combination (30), enter down oil control chamber (84), make down the volume in oil control chamber (84) become big, spool (78) moves upward, and secondary selector valve (21) is commutation for the second time.
9, downhole automatic control hydraulic oil pumping machine according to claim 6 is characterized in that oil interface (16) on one-way valve (11), oil pick-up tube that active chamber (10) is discharged, and enters oil pick-up tube (14); The oil that working oil chamber (3) is discharged enters oil pick-up tube (14) through one-way valve (2), oil pick-up tube lower interface (15).
10, downhole automatic control hydraulic oil pumping machine according to claim 6, the hydraulic oil that it is characterized in that power cavity (8) discharge is down got back in the fuel tank of hydraulic power unit (18) through power oil pipe (27), B mouth (73), B mouth oil duct (72), 0 mouthful of oil duct (90), O mouth (81), oil duct (56), oil outlet (57), return tube (20).
11, downhole automatic control hydraulic oil pumping machine according to claim 8, it is characterized in that when spool (78) when moving downward, following oil control chamber (84) volume diminishes, and discharges hydraulic oil, and the hydraulic oil of discharge is through oil duct (79), oil control mouthful (80) down, control oil pipe (23), A mouth (50), A
1Mouthful (49), oil duct (47), oil duct (44), O mouth (43), control oil pipe (13), control oily return opening (61), oil duct (89), oil duct (56), oil outlet (57), return tube (20), get back in the fuel tank of hydraulic power unit (18); When spool (78) when moving upward, the volume of controlling chamber (85) that oils diminishes, discharge hydraulic oil, the hydraulic oil of discharging through oil duct (82), the control mouthful (83) that oils, control oil pipe (22), B mouth (53), oil duct (48), oil duct (45), oil duct (44), O mouth (43), control oil pipe (13), control oily return opening (61), oil duct (89), oil duct (56), oil outlet (57), return tube (20), get back in the fuel tank of hydraulic power unit (18).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101407043A CN101324229B (en) | 2008-07-10 | 2008-07-10 | Downhole automatic control hydraulic oil pumping machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101407043A CN101324229B (en) | 2008-07-10 | 2008-07-10 | Downhole automatic control hydraulic oil pumping machine |
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| CN101324229A true CN101324229A (en) | 2008-12-17 |
| CN101324229B CN101324229B (en) | 2010-06-02 |
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| CN2008101407043A Expired - Fee Related CN101324229B (en) | 2008-07-10 | 2008-07-10 | Downhole automatic control hydraulic oil pumping machine |
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Cited By (6)
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| CN105508228A (en) * | 2016-01-14 | 2016-04-20 | 中国石油化工股份有限公司胜利油田分公司投资发展处 | Underground hydraulic automatic reversing rodless sand-sticking-prevention oil well pump |
| CN104533350B (en) * | 2014-12-18 | 2017-06-13 | 中国石油天然气股份有限公司 | Oil well fluid flooding pumping system |
| CN107366615A (en) * | 2017-06-06 | 2017-11-21 | 中煤科工集团西安研究院有限公司 | Hydraulically driven ram pump and its coal bed gas are without bar mining device |
| CN108468639A (en) * | 2018-05-29 | 2018-08-31 | 南京聚源隆能源科技有限公司 | A kind of well liquid drives the automatic reversing apparatus of reciprocal reciprocating oil pumping system |
| CN114483551A (en) * | 2020-11-12 | 2022-05-13 | 中国石油天然气股份有限公司 | Plunger pump system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4405291A (en) * | 1980-05-22 | 1983-09-20 | Otis Engineering Corporation | Downhole double acting pump |
| US4720978A (en) * | 1986-01-13 | 1988-01-26 | Spacer John P | Solar-powered rankine cycle pumping engine |
| CN1043979A (en) * | 1990-02-12 | 1990-07-18 | 付连起 | Hydrodynamic oil-diving pump |
| CN2287672Y (en) * | 1997-04-02 | 1998-08-12 | 浙江大学 | Power Recovery Type Hydraulic Pumping Unit for Offshore Oil Production |
| CN2549176Y (en) * | 2002-06-10 | 2003-05-07 | 赵怀文 | Signal-feedback pumping unit |
| CN100497882C (en) * | 2006-11-16 | 2009-06-10 | 叶少华 | Hydraulic oil production method and device |
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2008
- 2008-07-10 CN CN2008101407043A patent/CN101324229B/en not_active Expired - Fee Related
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| CN104533350B (en) * | 2014-12-18 | 2017-06-13 | 中国石油天然气股份有限公司 | Oil well fluid flooding pumping system |
| CN105508228A (en) * | 2016-01-14 | 2016-04-20 | 中国石油化工股份有限公司胜利油田分公司投资发展处 | Underground hydraulic automatic reversing rodless sand-sticking-prevention oil well pump |
| CN105508228B (en) * | 2016-01-14 | 2017-09-29 | 中国石油化工股份有限公司胜利油田分公司投资发展处 | A kind of underground hydraulic automatic reverse is without bar Anti-sand oil pump |
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| CN108468639B (en) * | 2018-05-29 | 2024-03-22 | 南京聚源隆能源科技有限公司 | Automatic reversing device of oil well liquid-driven reciprocating oil pumping system |
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