CN111485857B - Single-double-cylinder wellhead type automatic reversing hydraulic pumping unit and hydraulic control method - Google Patents
Single-double-cylinder wellhead type automatic reversing hydraulic pumping unit and hydraulic control method Download PDFInfo
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- CN111485857B CN111485857B CN202010427518.9A CN202010427518A CN111485857B CN 111485857 B CN111485857 B CN 111485857B CN 202010427518 A CN202010427518 A CN 202010427518A CN 111485857 B CN111485857 B CN 111485857B
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- 238000005086 pumping Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 69
- 239000003921 oil Substances 0.000 claims abstract description 30
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 2
- 230000001174 ascending effect Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/129—Adaptations of down-hole pump systems powered by fluid supplied from outside the borehole
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
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- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
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- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The application belongs to the technical field of petroleum exploitation apparatuses, and discloses a single-double-cylinder wellhead type automatic reversing hydraulic pumping unit and a hydraulic control method, wherein a motor drives an oil pump to suck hydraulic oil through a filter, and then the hydraulic oil is conveyed to an energy accumulator to adjust the flow through a flow regulating valve so as to realize the speed of stroke; the hydraulic oil cylinder is lifted or lowered by entering the hydraulic oil cylinder after the hydraulic oil cylinder is connected to an automatic reversing hydraulic control system through a check valve and a connecting pipeline; the length of the stroke can be changed by adjusting the height of an upper end sensor of the automatic hydraulic control system; the automatic hydraulic control system alternately starts and stops the motor and the energy accumulator to enable the motor and the energy accumulator to alternately work. The application has the advantages of small volume and small weight, greatly reduces the resources in equipment production, and has convenient equipment maintenance and well repair operation and simple operation. Solves the defect that the existing oil field well with well depth within one kilometer needs to use a large-sized pumping unit.
Description
Technical Field
The application belongs to the technical field of petroleum exploitation equipment, and particularly relates to a single-double-cylinder wellhead type automatic reversing hydraulic pumping unit and a hydraulic control method.
Background
At present, the existing pumping units have huge body types and large occupied areas. The weight reaches several tons, steel is wasted greatly, and concrete castings are used as the basis. The power of the motor is more than eight kilowatts, and the energy consumption is high. The failure rate of the equipment is high, the later maintenance is complex, the dependence on a crane is large, and the cost is high. Meanwhile, when a well with serious wax precipitation and thick oil cold production are met, the sucker rod cannot descend or descends very slowly due to resistance and buoyancy generated on the sucker rod, so that the sucker rod cannot work normally; in addition, the existing beam pumping unit has small stroke range and difficult adjustment, and the stroke speed adjustment is realized by replacing a belt pulley.
Through the above analysis, the problems and defects existing in the prior art are as follows:
(1) The whole equipment of the existing pumping unit has the disadvantages of huge volume, high weight, high energy consumption, complex maintenance and high cost.
(2) Particularly, when the well with serious wax deposition and thick oil cold production are met, the sucker rod cannot be lowered or is lowered very slowly due to the resistance and buoyancy generated on the sucker rod, so that the sucker rod cannot work normally, and the yield is low.
(3) The existing beam pumping unit has small stroke range, difficult adjustment and adjustment of stroke speed, and the adjustment of the stroke speed is realized by replacing a belt pulley.
The difficulty of solving the problems and the defects is as follows: the whole structure and the working principle of the existing pumping unit need to be thoroughly subverted.
The meaning of solving the problems and the defects is as follows: the volume and the weight of the pumping unit are greatly reduced, the dependence of a crane is avoided in the later maintenance, and the maintenance frequency is low. The speed of the stroke and the length of the stroke are realized through the flow regulating valve and the regulating sensor, so that the regulating workload is greatly reduced. The up-and-down stroke in the oil well production operation is optimized, the yield is increased, and a series of problems existing in the beam pumping unit are fundamentally solved.
Disclosure of Invention
Aiming at the problems existing in the prior art, the application provides a single-double-cylinder wellhead type automatic reversing hydraulic pumping unit and a hydraulic control method.
The application is realized in such a way that a hydraulic control method of a wellhead type automatic reversing hydraulic pumping unit comprises the following steps:
step one, a motor drives an oil pump to suck hydraulic oil through a filter, and then the hydraulic oil is conveyed to an energy accumulator to adjust the flow through a flow adjusting valve, so that the stroke speed is high and low;
step two, the hydraulic control system is connected to an automatic reversing hydraulic control system through a check valve and a connecting pipeline, and then the hydraulic control system enters a hydraulic cylinder to enable the cylinder to ascend or descend;
step three, the length of the stroke can be changed by adjusting the height of an upper end sensor of the automatic hydraulic control system;
and step four, the automatic hydraulic control system alternately starts and stops the motor and the energy accumulator to enable the motor and the energy accumulator to alternately work.
Further, a radiator is arranged on the hydraulic circuit.
The application further aims to provide a single-cylinder wellhead-type automatic reversing hydraulic pumping unit for implementing the hydraulic control method of the wellhead-type automatic reversing hydraulic pumping unit, wherein the single-cylinder wellhead-type automatic reversing hydraulic pumping unit is provided with a base flange, and a bracket is arranged on the base flange;
a hydraulic cylinder flange is arranged above the bracket, and the hydraulic cylinder is inversely arranged on the flange;
the top of the hydraulic cylinder piston is provided with a sucker rod fixer, the sucker rod is connected with the sucker rod fixer, and an automatic hydraulic control system is arranged on the bracket.
Further, the hydraulic cylinder is connected with a downlink pipeline and an uplink pipeline through oil guide pipes respectively, and the uplink hydraulic oil pipeline and the downlink hydraulic oil pipeline are connected to the bottom end of the support column and are provided with valves.
Further, the base flange is installed to the support lower extreme, and base flange installs on the well head, and base flange is annular.
The application further aims to provide the double-cylinder wellhead-type automatic reversing hydraulic pumping unit for implementing the hydraulic control method of the wellhead-type automatic reversing hydraulic pumping unit, wherein the double-cylinder wellhead-type automatic reversing hydraulic pumping unit is provided with a base flange;
the two sides of the base flange are provided with hydraulic cylinders in a divided manner, and the upper ends of the two hydraulic cylinders are provided with fixed hydraulic cylinder flanges;
the top of the two hydraulic cylinder pistons is provided with a load flange, and the sucker rod is fixed on the load flange through a sucker rod fixer.
Further, an automatic hydraulic control system is arranged between the base flange and the hydraulic cylinder flange, and an automatic hydraulic control system contact rod is arranged on the load flange downwards.
Further, a rail is installed on the base flange, and a rail bracket is installed at the top of the rail.
Further, a pulley fixer is also arranged on the sucker rod fixer.
By combining all the technical schemes, the application has the advantages and positive effects that:
(1) According to the application, the motor drives the oil pump to suck hydraulic oil through the filter, and then the hydraulic oil is conveyed to the energy accumulator to adjust the flow through the flow adjusting valve, so that the stroke speed is realized; the hydraulic oil cylinder is lifted or lowered by entering the hydraulic oil cylinder after the hydraulic oil cylinder is connected to an automatic reversing hydraulic control system through a check valve and a connecting pipeline; the length of the stroke can be changed by adjusting the height of an upper end sensor of the automatic hydraulic control system; the automatic hydraulic control system alternately starts and stops the motor and the energy accumulator to enable the motor and the energy accumulator to alternately work. According to the application, the energy accumulator is added into the automatic hydraulic control system, and can replace the motor to supply oil to the system for ten minutes after the energy accumulator works for ten minutes, at the moment, the motor stops working without consuming electricity, and the motor works again after the energy of the energy accumulator is released after ten minutes, so that the operation is repeated. The application can avoid the problems of small stroke range and difficult adjustment of the beam pumping unit, and the stroke speed adjustment does not need to replace a belt pulley. The pumping unit has the advantages of small volume and small weight, which is only five percent of pumping equipment in the existing market, and greatly reduces the resources in equipment production. All maintenance operations are convenient, and the electric energy consumption is twenty percent to forty percent of the existing oil pumping equipment. Small occupied area and simple operation. The application solves the problem that the existing oil field well with well depth within one kilometer needs to use a large-size pumping unit; the hydraulic oil cylinder and the oil pump are matched, and force is applied to the sucker rod in the up stroke or the down stroke, so that the problems that the sucker rod cannot be lowered by self weight to make the down stroke, a complete power stroke cannot be made faster or cannot be lowered to influence the yield and waste of electric energy in cold recovery of heavy oil and severe wax formation can be effectively solved.
(2) According to the application, the radiator is arranged on the hydraulic circuit, hydraulic oil can be radiated through the radiator in summer, and the reversing valve can be closed to directly flow back to the oil tank in winter.
(3) According to the application, the sucker rod fixer is arranged at the top of the piston of the hydraulic cylinder of the single-cylinder pumping unit, and the sucker rod is connected with the sucker rod fixer, so that the telescopic force of the hydraulic cylinder can be effectively applied to the sucker rod. The automatic hydraulic control system is arranged on the bracket and is used for detecting the position of the sucker rod fixer and controlling the movement of the sucker rod.
(4) In the application, the uplink pipeline and the downlink pipeline are connected to the bottom end of the hydraulic cylinder and are provided with the valves, so that the connection of oil way pipelines is facilitated, and the disassembly is convenient during well repair operation.
(5) In the application, the lower end of the bracket is provided with the base flange, and the base flange is arranged on the wellhead, so that the fixity of the whole device is improved.
(6) According to the application, hydraulic cylinders are arranged on two sides of a base flange of a double-cylinder pumping unit in a split manner, and the upper ends of the two hydraulic cylinders are provided with fixed hydraulic cylinder flanges; load flanges are arranged at the tops of the two hydraulic cylinder pistons, the sucker rod is fixed on the load flanges through a sucker rod fixer,
(7) According to the application, an automatic hydraulic control system is arranged between the base flange and the hydraulic cylinder flange, and the contact rod of the automatic hydraulic control system is downwards arranged on the load flange, so that the stroke range of the sucker rod can be adjusted.
(8) In the application, a rail is arranged on a base flange, and a rail bracket is arranged at the top of the rail. The stability of the whole operation of the equipment is improved.
(9) The pulley fixer is arranged on the sucker rod fixer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, the drawings described below are only some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a single-cylinder wellhead type automatic reversing hydraulic pumping unit provided by an embodiment of the application.
Fig. 2 is a top view of a single-cylinder wellhead type automatic reversing hydraulic pumping unit provided by an embodiment of the application.
Fig. 3 is a schematic structural diagram of a double-cylinder wellhead type automatic reversing hydraulic pumping unit provided by the embodiment of the application.
Fig. 4 is a top view of a double-cylinder wellhead type automatic reversing hydraulic pumping unit provided by an embodiment of the application.
Fig. 5 is a schematic diagram of a hydraulic cylinder flange and a rail structure according to an embodiment of the present application.
Fig. 6 is a flow chart of a hydraulic control method of a wellhead type automatic reversing hydraulic pumping unit provided by an embodiment of the application.
In the figure: 1. a wellhead; 2. a base flange; 3. a down pipe; 4. an upstream pipeline; 5. an oil way valve; 6. a sucker rod holder; 7. an automatic hydraulic control system; 8. a sucker rod; 9. a hydraulic cylinder; 10. a hydraulic cylinder flange; 11. a load flange; 12. an automatic hydraulic control system contact lever; 13. a bracket; 14. a track bracket; 15. a track; 16. a pulley holder; 17. and (3) a pulley.
Detailed Description
The present application will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
Aiming at the problems existing in the prior art, the application provides a single-double-cylinder wellhead type automatic reversing hydraulic pumping unit and a hydraulic control method, and the application is described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1-2, a wellhead type automatic reversing hydraulic pumping unit is realized by installing an annular base flange 2 on a wellhead 1, and fixing a mounting bracket 13 on the base flange 2. A hydraulic cylinder flange 10 is mounted above the bracket 13, and the hydraulic cylinder 9 is mounted upside down on the flange. A sucker rod holder 6 is mounted on the top of the hydraulic cylinder piston, to which sucker rod 8 is secured. An automatic hydraulic control system 7 is mounted on the bracket 13. The ascending and descending hydraulic oil pipelines are connected to the bottom ends of the struts and are provided with valves 5, so that the connection of oil pipelines is facilitated, and the disassembly is convenient during well repairing operation.
As shown in fig. 1-2, the motor provides kinetic energy to drive the hydraulic oil pump, hydraulic oil enters the hydraulic oil cylinder 9 through the ascending pipeline 4, so that the hydraulic oil cylinder 9 contracts a piston rod to lift the sucker rod holder 6 up to lift the sucker rod 8, an ascending stroke is performed, and meanwhile, oil in a cavity of the hydraulic oil cylinder returns to the hydraulic oil tank through the descending pipeline 3; when the sucker rod holder 6 rises to the top and touches the upper sensor of the automatic hydraulic control system 7, hydraulic oil enters the hydraulic oil cylinder 9 through the down pipeline 3, the piston rod of the hydraulic oil cylinder 9 begins to extend again, the sucker rod holder 6 descends to enable the sucker rod 8 to descend, the lower stroke is carried out, and meanwhile oil in an outer chamber of the hydraulic oil cylinder returns to the hydraulic oil tank through the up pipeline 4. When the sucker rod holder 6 descends to the bottom and touches the lower sensor of the automatic hydraulic control system 7, hydraulic oil enters the hydraulic cylinder 9 again through the ascending pipeline 4, and then the upward stroke is started again, and the above steps are repeated.
Example 2
As shown in fig. 3-4, the wellhead type automatic reversing hydraulic pumping unit is realized by installing an elliptical base flange 2 on a wellhead 1, installing hydraulic cylinders 9 on two sides of the base flange 2 in a split mode, and installing fixed hydraulic cylinder flanges 10 on the upper ends of the two hydraulic cylinders 9. The top of the piston of the two hydraulic cylinders 9 is provided with a load flange 11, and the sucker rod 8 is fixed on the load flange 11 by a sucker rod fixer 6. An automatic hydraulic control system 7 is arranged between the base flange 2 and the hydraulic cylinder flange 10, and an automatic hydraulic control system contact rod 12 is arranged on the load flange 11 downwards. A rail 15 is also mounted on the base flange 2, and a rail bracket 14 is mounted on top of the rail 15. A pulley holder 16 is mounted on the sucker rod holder 6.
The ascending pipeline 4 and the descending pipeline 3 are connected to the bottom end of the hydraulic cylinder 9 and are provided with the valve 5, so that the connection of oil line and the convenient disassembly during well repairing operation are facilitated.
The automatic hydraulic control system 7 is further provided with the energy accumulator, the energy accumulator can replace the motor to supply oil to the system for ten minutes after the motor works for ten minutes, the motor stops working without consuming electricity at the moment, and the motor works again after ten minutes or the energy of the energy accumulator is released, and the operation is repeated.
As shown in fig. 3-4, the motor provides kinetic energy to drive the hydraulic oil pump, the hydraulic oil enters the hydraulic oil cylinder 9 through the ascending pipeline 4, so that the hydraulic oil cylinder 9 extends a piston rod to lift the load flange 11 and the sucker rod holder 6, thereby lifting the sucker rod 8 to perform an ascending stroke, and meanwhile, the oil in the outer chamber of the hydraulic oil cylinder returns to the hydraulic oil tank through the descending pipeline 3; when the load flange 11 and the sucker rod holder 6 rise to the point that the contact rod 12 of the top automatic hydraulic control system touches the upper sensor of the automatic hydraulic control system 7, hydraulic oil enters the hydraulic cylinder 9 through the down pipeline 3, the piston rod of the hydraulic cylinder 9 begins to shrink again, the load flange and the sucker rod holder 6 are lowered, so that the sucker rod 8 is lowered, the downward stroke is performed, and meanwhile, the oil in the inner cavity of the hydraulic cylinder returns to the hydraulic oil tank through the up pipeline 4. When the load flange 11 and the sucker rod holder 6 descend to the bottom and the contact rod 12 of the automatic hydraulic control system touches the lower sensor of the automatic hydraulic control system 7, hydraulic oil enters the hydraulic cylinder 9 again through the uplink pipeline 4, meanwhile, oil in the outer chamber of the hydraulic cylinder returns to the hydraulic oil tank through the downlink pipeline 3, and then the upper stroke is started again, and the operation is repeated.
As shown in fig. 6, the hydraulic control method for the wellhead type automatic reversing hydraulic pumping unit provided by the embodiment of the application comprises the following steps:
s101: the motor drives the oil pump to suck hydraulic oil through the filter, and then the hydraulic oil is conveyed to the energy accumulator to adjust the flow through the flow adjusting valve, so that the stroke speed is high and low;
s102: the hydraulic oil cylinder is lifted or lowered by entering the hydraulic oil cylinder after the hydraulic oil cylinder is connected to an automatic reversing hydraulic control system through a check valve and a connecting pipeline;
s103: the length of the stroke can be changed by adjusting the height of an upper end sensor of the automatic hydraulic control system;
s104: the automatic hydraulic control system alternately starts and stops the motor and the energy accumulator to enable the motor and the energy accumulator to alternately work.
The working principle of the application is as follows: in the application, a single-cylinder wellhead is driven by a motor to provide kinetic energy to drive a hydraulic oil pump, hydraulic oil enters a hydraulic oil cylinder 9 through an ascending pipeline 4, so that the hydraulic oil cylinder 9 contracts a piston rod to lift a sucker rod fixer 6, thereby lifting the sucker rod 8 upwards to perform an ascending stroke, and meanwhile, oil in a cavity of the hydraulic oil cylinder returns to a hydraulic oil tank through a descending pipeline 3; when the sucker rod holder 6 rises to the top and touches the upper sensor of the automatic hydraulic control system 7, hydraulic oil enters the hydraulic oil cylinder 9 through the down pipeline 3, the piston rod of the hydraulic oil cylinder 9 begins to extend again, the sucker rod holder 6 descends to enable the sucker rod 8 to descend, the lower stroke is carried out, and meanwhile oil in an outer chamber of the hydraulic oil cylinder returns to the hydraulic oil tank through the up pipeline 4. When the sucker rod holder 6 descends to the bottom and touches the lower sensor of the automatic hydraulic control system 7, hydraulic oil enters the hydraulic cylinder 9 again through the ascending pipeline 4, and then the upward stroke is started again, and the above steps are repeated.
According to the application, a double-cylinder wellhead is driven by a motor to provide kinetic energy to drive a hydraulic oil pump, hydraulic oil enters a hydraulic oil cylinder 9 through an ascending pipeline 4, so that the hydraulic oil cylinder 9 stretches a piston rod to lift a load flange 11 and a sucker rod fixer 6, thereby lifting a sucker rod 8 to perform an ascending stroke, and meanwhile, oil in an outer chamber of the hydraulic oil cylinder returns to a hydraulic oil tank through a descending pipeline 3; when the load flange 11 and the sucker rod holder 6 rise to the point that the contact rod 12 of the top automatic hydraulic control system touches the upper sensor of the automatic hydraulic control system 7, hydraulic oil enters the hydraulic cylinder 9 through the down pipeline 3, the piston rod of the hydraulic cylinder 9 begins to shrink again, the load flange and the sucker rod holder 6 are lowered, so that the sucker rod 8 is lowered, the downward stroke is performed, and meanwhile, the oil in the inner cavity of the hydraulic cylinder returns to the hydraulic oil tank through the up pipeline 4. When the load flange 11 and the sucker rod holder 6 descend to the bottom and the contact rod 12 of the automatic hydraulic control system touches the lower sensor of the automatic hydraulic control system 7, hydraulic oil enters the hydraulic cylinder 9 again through the uplink pipeline 4, meanwhile, oil in the outer chamber of the hydraulic cylinder returns to the hydraulic oil tank through the downlink pipeline 3, and then the upper stroke is started again, and the operation is repeated.
The foregoing is merely illustrative of specific embodiments of the present application, and the scope of the application is not limited thereto, but any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present application will be apparent to those skilled in the art within the scope of the present application.
Claims (10)
1. The hydraulic control method of the wellhead type automatic reversing hydraulic pumping unit is characterized by comprising the following steps of:
step one, a motor drives an oil pump to suck hydraulic oil through a filter, then the hydraulic oil is conveyed to an energy accumulator and then flows through a flow regulating valve to regulate flow, so that the speed of stroke is realized;
step two, the hydraulic control system is connected to an automatic reversing hydraulic control system through a check valve and a connecting pipeline, and then the hydraulic control system enters a hydraulic cylinder to enable the cylinder to ascend or descend;
step three, the length of the stroke can be changed by adjusting the height of an upper end sensor of the automatic reversing hydraulic control system;
and step four, the automatic hydraulic control system alternately starts and stops the motor and the energy accumulator to enable the motor and the energy accumulator to alternately work.
2. The method for hydraulic control of a wellhead-type automatic reversing hydraulic pumping unit as claimed in claim 1, wherein a radiator is installed on the hydraulic circuit.
3. A single-cylinder wellhead type automatic reversing hydraulic pumping unit for implementing the hydraulic control method of the wellhead type automatic reversing hydraulic pumping unit according to any one of claims 1 to 2, characterized in that a base flange is arranged at the bottom of the single-cylinder wellhead type automatic reversing hydraulic pumping unit, and a bracket is arranged on the base flange;
a hydraulic cylinder flange is arranged above the bracket, and the hydraulic cylinder is inversely arranged on the flange;
the top of the hydraulic cylinder piston is provided with a sucker rod fixer, and the sucker rod is connected with the sucker rod fixer;
an automatic hydraulic control system is arranged on the support.
4. The single cylinder wellhead type automatic reversing hydraulic pumping unit as defined in claim 3, wherein the hydraulic cylinder is connected with a down line and an up line through oil guide pipes, respectively, and the up and down hydraulic oil lines are connected to the bottom ends of the struts and are provided with valves.
5. The single-cylinder wellhead-type automatic reversing hydraulic pumping unit as defined in claim 3, wherein a base flange is installed at the lower end of the support, the base flange is installed on a wellhead, and the base flange is annular.
6. A double-cylinder wellhead type automatic reversing hydraulic pumping unit for implementing the hydraulic control method of the wellhead type automatic reversing hydraulic pumping unit according to any one of claims 1 to 2, characterized in that a base flange is arranged at the bottom of the double-cylinder wellhead type automatic reversing hydraulic pumping unit;
the two sides of the base flange are provided with hydraulic cylinders in a divided manner, and the upper ends of the two hydraulic cylinders are provided with fixed hydraulic cylinder flanges;
the top of the piston of the two hydraulic cylinders is provided with a load flange, and the sucker rod is fixed on the load flange through a sucker rod fixer.
7. The double-cylinder wellhead type automatic reversing hydraulic pumping unit as defined in claim 6, wherein an automatic hydraulic control system is installed between the base flange and the hydraulic cylinder flange, and an automatic hydraulic control system contact rod is installed on the load flange downwards.
8. The double cylinder wellhead type automatic reversing hydraulic pumping unit as defined in claim 6, wherein the base flange is provided with a rail, and a rail bracket is arranged at the top of the rail.
9. The double cylinder wellhead type automatic reversing hydraulic pumping unit as defined in claim 6, wherein the sucker rod holder is further provided with a pulley holder.
10. A pumping unit implementing the hydraulic control method of the wellhead type automatic reversing hydraulic pumping unit according to any one of claims 1 to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010427518.9A CN111485857B (en) | 2020-05-14 | 2020-05-14 | Single-double-cylinder wellhead type automatic reversing hydraulic pumping unit and hydraulic control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010427518.9A CN111485857B (en) | 2020-05-14 | 2020-05-14 | Single-double-cylinder wellhead type automatic reversing hydraulic pumping unit and hydraulic control method |
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| CN111485857B true CN111485857B (en) | 2023-10-13 |
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| CN113833439A (en) * | 2021-10-10 | 2021-12-24 | 李文斌 | Hydraulic control system, method and application of hollow hydraulic oil cylinder wellhead type pumping unit |
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| CN2283137Y (en) * | 1996-05-15 | 1998-06-03 | 四川万兴科技发展有限责任公司 | Hydraulic beam-pumping unit |
| CN103075133A (en) * | 2013-01-05 | 2013-05-01 | 无锡市科优液压设备制造有限公司 | Flow compensation type hydraulic pumping unit |
| US8523533B1 (en) * | 2012-09-10 | 2013-09-03 | Larry D. Best | Constant horsepower regenerative assist for a hydraulic rod pumping unit |
| CN104790919A (en) * | 2015-05-12 | 2015-07-22 | 天津市仕杰达能源技术开发有限公司 | Automatic reversing hydraulic pumping unit long in stroke |
| CN109098691A (en) * | 2018-08-01 | 2018-12-28 | 张洪源 | A kind of hydraulic oil pumping system and its application method |
-
2020
- 2020-05-14 CN CN202010427518.9A patent/CN111485857B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2283137Y (en) * | 1996-05-15 | 1998-06-03 | 四川万兴科技发展有限责任公司 | Hydraulic beam-pumping unit |
| US8523533B1 (en) * | 2012-09-10 | 2013-09-03 | Larry D. Best | Constant horsepower regenerative assist for a hydraulic rod pumping unit |
| CN103075133A (en) * | 2013-01-05 | 2013-05-01 | 无锡市科优液压设备制造有限公司 | Flow compensation type hydraulic pumping unit |
| CN104790919A (en) * | 2015-05-12 | 2015-07-22 | 天津市仕杰达能源技术开发有限公司 | Automatic reversing hydraulic pumping unit long in stroke |
| CN109098691A (en) * | 2018-08-01 | 2018-12-28 | 张洪源 | A kind of hydraulic oil pumping system and its application method |
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