CN110159231B - Oil pump driving and oil well heating device - Google Patents
Oil pump driving and oil well heating device Download PDFInfo
- Publication number
- CN110159231B CN110159231B CN201910620120.4A CN201910620120A CN110159231B CN 110159231 B CN110159231 B CN 110159231B CN 201910620120 A CN201910620120 A CN 201910620120A CN 110159231 B CN110159231 B CN 110159231B
- Authority
- CN
- China
- Prior art keywords
- pipe
- hole
- piston
- inner pipe
- piston rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 28
- 239000003129 oil well Substances 0.000 title claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 45
- 230000002829 reductive effect Effects 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 44
- 238000005086 pumping Methods 0.000 description 15
- 239000007788 liquid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000005570 vertical transmission Effects 0.000 description 1
Classifications
-
- 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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Actuator (AREA)
Abstract
The invention relates to an oil pump driving and oil well heating device, which comprises an inner pipe and an outer pipe sleeved outside the inner pipe, wherein an annular gap is reserved between the inner pipe and the outer pipe, a piston is arranged in the inner pipe, the piston is connected with a piston rod which extends downwards, the piston rod is used for being connected with a sucker rod or a sucker rod connecting rod below the piston rod so as to drive an oil pump, an upper bolt and a lower bolt are respectively arranged at the upper end and the lower end of the inner pipe and the lower end of the outer pipe, a joint used for being connected with a hydraulic power system is arranged above the upper bolt, and a piston rod sealing device is arranged below the lower bolt. The invention can help to reduce the failure of the sucker rod and can be well adapted to waxy wells and inclined wells.
Description
Technical Field
The invention relates to a driving and oil well heating device of an oil pump, belonging to the technical field of petroleum machinery.
Background
At present, the petroleum exploitation equipment in China mainly comprises a ground pumping unit, a pumping rod (or a pumping rod column) and an oil pump, wherein the oil pump is positioned at the lower end of the oil pipe, a working moving part (a plunger or a pump barrel) of the oil pump is connected with the ground pumping unit through the pumping rod, the ground pumping unit drives the working moving part to move up and down through the pumping rod to lift oil out along the oil pipe, the pumping rod is a key component of a pumping system, the pumping rod is required to have a length extending from the ground to the bottom of the oil pipe due to the fact that the prior art requires the pumping rod to have complicated stress and movement modes of different parts, the strength of the pumping rod is a main factor for limiting the depth and the displacement of a lower pump, and the failure of the pumping rod is a main cause of the failure of a sucker rod pumping system.
In addition, oil exploitation also relates to the exploitation of waxy crude oil and the exploitation of inclined shafts, wherein the waxy shafts can be normally exploited only by auxiliary facilities such as cleaning, medicine assistance or electric heating, and the like, so that the exploitation cost is reduced, the inclined shafts can cause eccentric wear damage to oil rods or oil pipes, and the eccentric wear causes the lying well to be operated again when serious, so that the manpower and material resources are wasted. This results in the existing oil recovery equipment being difficult to adapt well to these wells and in the need to provide several corresponding auxiliary equipment, which results in a significant increase in oil recovery costs.
Disclosure of Invention
In order to solve the technical problems, the invention provides an oil pump driving and oil well heating device which is beneficial to reducing the failure of a sucker rod and can be well suitable for a waxy well and an inclined well.
The technical scheme of the invention is as follows: the oil pump driving and oil well heating device comprises an inner pipe and an outer pipe sleeved outside the inner pipe, wherein an annular gap forming a medium channel is reserved between the outer pipe and the inner pipe, a piston which slides and is in sealing fit with the inner wall of the inner pipe is arranged in the inner pipe, so that the inner pipe and the piston form a hydraulic cylinder structure, the inner pipe forms a cylinder barrel which is matched with the piston, the piston divides a pipe cavity (pipe hole) of the inner pipe into an upper cavity and a lower cavity, the volumes (or axial sizes) of the upper cavity and the lower cavity change along with the up-and-down movement of the piston, the lower ends of the inner pipe and the outer pipe are provided with lower bolts which are in unequal-diameter cylindrical shapes and are provided with an inner pipe connecting section and an outer pipe connecting section, the lower ends of the inner pipe and the outer pipe are respectively connected with the outer sides of the inner pipe connecting section and the outer pipe connecting section of the lower bolts in a screwed mode, the limit of the maximum screwing degree of the inner pipe and the outer pipe on the lower bolt can be realized through an annular step structure on the side surface of the lower bolt, the lower bolt is provided with an axial central through hole and one or more radial through holes, the inner end opening of the radial through hole of the lower bolt is connected with the central through hole of the lower bolt, the outer end opening is positioned between the inner pipe connecting section and the outer pipe connecting section of the lower bolt and is communicated with an annular gap between the outer pipe and the inner pipe, a piston rod which extends downwards is connected with the piston rod, the piston rod penetrates through the central through hole of the lower bolt, the piston rod is used for being positioned below the piston rod to be connected with a sucker rod or a sucker rod connecting rod so as to drive an oil pump, a piston rod sealing device is arranged below the lower bolt and is used for sealing a gap between the piston rod, the upper ends of the inner pipe and the outer pipe are provided with upper bolts, the upper bolt is in a column shape with unequal diameters, an outer pipe connecting section is arranged, the upper end of the outer pipe is screwed on the outer side of the outer pipe connecting section of the upper bolt, the limit of the maximum screwing degree of the outer pipe on the upper bolt can be realized through an annular step structure on the side surface of the upper bolt, the lower end surface of the upper bolt is in pressure contact with the upper end port of the inner pipe, the inner pipe can be assembled in a fixed mode, the difficulty in assembling that the inner pipe and the outer pipe cannot be screwed on the upper bolt at the same time after the outer pipe is blocked or the lower end of the inner pipe and the outer pipe are screwed in place is avoided, the upper bolt is provided with an axial central through hole and one or more axial side through holes (the side positions are positions on no longer axes), the lower port of the side through hole of the upper bolt is communicated with an annular gap between the outer pipe and the inner pipe, thereby, two hydraulic medium channels are formed on the device, one of the two hydraulic medium channels is mainly composed of a pipe hole of the inner pipe, a central through hole of the lower bolt and a central through hole of the upper bolt which are mutually communicated, and can be called a first medium channel, the other one of the two hydraulic medium channels is mainly composed of an annular gap between the outer pipe and the inner pipe which are mutually communicated and a lateral through hole of the upper bolt, and can be called a second medium channel, the bottoms of the first medium channel and the second medium channel are communicated through a radial through hole on the lower bolt, the piston is positioned in the pipe hole of the inner pipe, a hydraulic medium with a certain pressure is input through an upper interface of the first medium channel to push the piston to move downwards, meanwhile, the volume of the lower cavity is reduced, the hydraulic medium flows back to a hydraulic power system from an upper interface of the second medium channel, the flowing direction of the hydraulic medium is changed through the hydraulic power system, the hydraulic medium with certain pressure is input through the upper interface of the second medium channel to push the piston to move upwards, meanwhile, the volume of the upper cavity is reduced, the hydraulic medium flows back to the hydraulic power system from the upper interface of the first medium channel, and therefore the oil pump can be controlled and driven to work through the hydraulic power system.
The hydraulic power system may be of any suitable prior art and may be provided with corresponding control means, for example, hydraulic power systems and control means therefor in existing hydraulic systems.
The beneficial effects of the invention are as follows: the device can be arranged at the lower part in the oil pipe, obviously reduces the length of the sucker rod, simplifies the working environment of the sucker rod, is beneficial to reducing the requirement on the strength of the sucker rod, is beneficial to preparing and assembling the sucker rod with higher strength, further reduces or eliminates the restriction of the sucker rod on the depth and the discharge capacity of the pump, and reduces the possibility or the frequency of failure of the sucker rod. Meanwhile, the outer tube of the device and the matched hydraulic medium pipeline are static relative to the oil pipe, even if the device is used for an inclined shaft, the device is not worn or eccentrically worn in a moving way between the outer tube and the oil pipe like an existing sucker rod, a ground hydraulic power system can conveniently be provided with a hydraulic medium heating device, and the hydraulic medium can generate heat in the process of internal circulation of the oil pipe, so that the oil pipe can be heated, produced liquid conveyed through the oil pipe is heated, and the blockage of wax components to the oil pipe is avoided or reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
Referring to fig. 1, the oil pump driving and oil well heating device provided by the invention comprises an inner pipe 10 and an outer pipe 20 sleeved outside the inner pipe, an annular gap 18 forming a medium channel is reserved between the outer pipe and the inner pipe, a piston 70 which is in sliding and sealing fit with the inner wall of the inner pipe is arranged in the inner pipe, thereby the inner pipe and the piston form a hydraulic cylinder structure, the inner pipe forms a cylinder barrel matched with the piston, the piston divides a pipe cavity (pipe hole) 12 of the inner pipe into an upper cavity and a lower cavity, the volumes (or axial sizes) of the upper cavity and the lower cavity are changed along with the up-down movement of the piston, lower bolts 30 are arranged at the lower ends of the inner pipe and the outer pipe, the lower bolts are in unequal-diameter cylindrical shapes (for example, annular stepped cylindrical shapes and are allowed to have partial conical surfaces), an inner pipe connecting section and an outer pipe connecting section are arranged, the lower ends 11, 21 of the inner pipe and the outer pipe are respectively screwed on the outer sides of the inner pipe connecting section and the outer pipe connecting section of the lower bolt, the limit of the maximum screwing degree of the inner pipe and the outer pipe on the lower bolt can be realized through an annular step structure on the side surface of the lower bolt, the lower bolt is provided with an axial central through hole 32 and one or more radial through holes 33, the inner port of the radial through hole of the lower bolt is connected with the central through hole, the outer port is positioned between the inner pipe connecting section and the outer pipe connecting section of the lower bolt and communicated with an annular gap between the outer pipe and the inner pipe, the piston is connected with a piston rod 71 which extends downwards, the piston rod penetrates through the central through hole of the lower bolt and is connected with a sucker rod or a sucker rod connecting rod 75, the lower surface of the lower bolt is provided with a piston rod sealing device, for realizing the sealing of the gap between the inner pipe and the piston rod, the upper ends of the inner pipe and the outer pipe are provided with upper bolts 40 which are in unequal diameter cylindrical shapes and are provided with outer pipe connecting sections, the upper end 25 of the outer pipe is screwed on the outer side of the outer pipe connecting section of the upper bolt, the limit of the maximum screwing degree of the outer pipe on the upper bolt can be realized through an annular step structure on the side surface of the upper bolt, the lower end surface of the upper bolt is in pressure contact with the upper end port 15 of the inner pipe, the inner pipe can be assembled and fixed in a fixed mode, the assembly difficulty that the inner pipe and the outer pipe cannot be screwed on the upper bolt at the same time due to the shielding of the outer pipe or the screwing of the lower ends of the inner pipe and the outer pipe into place is avoided, the upper bolt is provided with an axial central through hole 42 and one or more axial side through holes 43 (the side positions are positions on the axis no longer), the lower end opening of the side through hole of the upper bolt is communicated with the annular gap between the outer pipe and the inner pipe, thus, two hydraulic medium channels are formed on the device, one of the two hydraulic medium channels is mainly composed of a pipe hole of the inner pipe, a central through hole of the lower bolt and a central through hole of the upper bolt which are communicated with each other, and can be called a first medium channel, the other one of the two hydraulic medium channels is mainly composed of the annular gap between the outer pipe and the inner pipe which are communicated with each other and the side through hole of the upper bolt, and can be called a second medium channel, the bottoms of the first medium channel and the second medium channel are communicated with each other through the radial through hole on the lower bolt, the piston is positioned in the pipe hole of the inner pipe, the hydraulic medium with a certain pressure is input through an upper interface of the first medium channel to push the piston to move downwards, and simultaneously the volume of the lower cavity is reduced, the hydraulic medium flows back to the hydraulic power system from the upper interface of the second medium channel, the flowing direction of the hydraulic medium is changed through the hydraulic power system, the hydraulic medium with certain pressure is input through the upper interface of the second medium channel to push the piston to move upwards, meanwhile, the volume of the upper cavity is reduced, the hydraulic medium flows back to the hydraulic power system from the upper interface of the first medium channel, and therefore the oil pump can be controlled and driven to work through the hydraulic power system.
The piston rod sealing device can comprise a stuffing box, the outer barrel 61 of the stuffing box is cylindrical, the inner cavity 62 of the stuffing box is conical with big end down, sealing stuffing is arranged above the stuffing box, a compression spring is arranged above the stuffing box, the upper end of the compression spring is propped against the lower end face of the upper bolt, the lower end of the compression spring is pressed on an annular stuffing pressing plate or the stuffing box, and the piston rod (or a sucker rod connecting rod) passes through the stuffing box, and the periphery of the piston rod or the sucker rod connecting rod is in contact with the stuffing box to realize sealing.
Packing in the stuffing box preferably adopts a packing structure.
The lower extreme of the stuffing box urceolus is preferably the reducing section (external diameter is less than the external diameter of stuffing box urceolus main part), is equipped with the external screw thread, connects soon and has had the upper seal tube 65, the upper portion tube hole of upper seal tube is the expanded diameter tube hole (aperture is greater than the aperture of upper seal tube main part), is equipped with the internal screw thread that is used for with the stuffing box urceolus connects soon, be equipped with the upper seal circle between the lower terminal surface of the reducing portion of stuffing box urceolus and the hole inner terminal surface of the expanded diameter tube hole of upper seal tube, be used for setting up the annular gap of upper seal circle and constitute corresponding upper seal groove 64.
The lower extreme of upper seal tube can be the undergauge section (external diameter is less than the external diameter of upper seal tube main part), is equipped with the external screw thread, connects soon down seal tube 67, the upper portion tube hole of lower seal tube is the expanded diameter tube hole (aperture is greater than the aperture of lower seal tube main part), is equipped with be used for with the internal screw thread that upper seal tube connects soon, be equipped with down the sealing washer between the lower terminal surface of the undergauge portion of upper seal tube and the hole inner terminal surface of the expanded diameter tube hole of lower seal tube for set up the annular gap of lower sealing washer and constitute corresponding lower seal groove 66. Therefore, a plurality of seals are formed through the stuffing box, the upper sealing ring and the lower sealing ring, hydraulic leakage is avoided, and the used sealing rings and sealing fillers can adopt proper prior art and can be mutually matched with various materials.
The lower end surface of the upper bolt is preferably provided with an annular groove or an annular step (an annular step at the edge) for inserting or sleeving the upper end port of the inner tube, so as to better fix the upper end of the inner tube.
The lower end face of the upper bolt is preferably provided with a sealing ring for sealing between the inner pipe and the lower end face of the upper bolt, wherein the sealing ring is used for being inserted into or sleeved on an annular groove or an annular step of the upper end port of the inner pipe.
The piston rod can be fixedly connected or movably connected with the piston, when the movable connection is adopted, the piston is provided with a cylindrical structure, an upper baffle plate and a lower baffle plate are arranged on the cylindrical structure of the piston, the upper end head part (preferably in a cylindrical shape) of the piston rod is arranged between the upper baffle plate and the lower baffle plate in the cylindrical structure of the piston and is in sliding fit with the inner wall of the cylindrical structure of the piston, the piston rod passes through a piston rod through hole in the middle of the lower baffle plate, a piston rod thrust spring is arranged in the cylindrical structure and is positioned between the upper baffle plate and the upper end head part of the piston rod, the upper end head part of the piston rod is pressed towards the lower baffle plate in a precompressed state, the outer diameter of the upper end head part of the piston rod is larger than the aperture of the piston rod through hole on the lower baffle plate, so that the upper end head part of the piston rod cannot pass through the piston rod through hole, and the piston rod thrust spring can be effectively protected from the impact of abnormal motion of the piston rod and vibration of the oil well pump can be counteracted.
The top of the upper bolt can upwards extend from the outer tube to form a joint connection part for connecting the joint 50, the central through hole on the joint connection part of the upper bolt is in an expanded diameter shape (the inner diameter of the central through hole is larger than that of the main body part of the central through hole of the upper bolt) and is provided with an internal thread, the joint is in a cylinder shape with unequal diameters, the lower end of the joint is screwed on the internal thread of the joint connection part of the upper bolt, the joint is provided with an axial central through hole 52 and one or more axial side through holes 53, the central through hole and the side through holes of the joint are respectively communicated with the central through hole and the side through holes of the upper bolt, the top of the central through hole of the joint is provided with a first pipeline interface 58, and the top of the side through hole of the joint is provided with a second pipeline interface 59 which is respectively connected with corresponding medium pipelines of a hydraulic power system, so that the communication between the first medium channel and the second medium channel of the device and the corresponding inlet and outlet of the hydraulic power system is realized.
The side of the upper bolt above the inner pipe can be provided with a radial annular bulge 46 to reduce the annular gap between the corresponding part and the inner wall of the outer pipe, increase the flowing resistance of the hydraulic medium, change the flow direction or the flowing mode, convert certain kinetic energy into heat energy, keep the medium temperature of the corresponding part and meet the temperature of the space in the heating outer oil pipe and the produced liquid.
The side of the upper bolt above the inner tube can be further provided with a radial annular concave part 47 so as to increase the annular gap between the corresponding part and the inner wall of the outer tube, reduce the flow velocity of the hydraulic medium, realize uniform pressure and impulse buffering under certain conditions, recover the static pressure of the medium and reduce vibration.
Seals may be provided between the mating surfaces of the various tubular, cylindrical members as desired.
Seals may be provided between the various end surfaces or planar mating surfaces as desired.
Preferably, the inner pipe, the outer pipe, the upper bolt of the lower bolt, the joint, the outer cylinder of the sealing box, the upper sealing pipe and the lower sealing pipe are all concentrically arranged.
The inner pipe, the outer pipe, the upper bolt of the lower bolt, the joint, the outer cylinder of the sealing box, the upper sealing pipe and the lower sealing pipe are all preferably in the shape of a rotator, and the axes of all the parts are positioned on the same straight line.
The hydraulic power system may be of any suitable prior art and may be provided with corresponding control means, for example, hydraulic power systems and control means therefor in existing hydraulic systems.
The hydraulic power system is usually provided with heating means for heating the hydraulic medium.
The heating device is preferably arranged in the liquid storage tank of the hydraulic power system, any suitable technology such as a steam heating pipe or an electric heating pipe can be adopted, and the heating device can be provided with a heating control device for controlling the work of the heating device to perform heating control, so that the heating quantity or the temperature of the hydraulic medium reaches the set requirement.
The hydraulic medium has corresponding temperature or heat energy through the heating device so as to release heat in the oil pipe, thereby realizing heating of the oil extraction liquid, and meanwhile, the hydraulic medium can generate certain heat energy for heating the extraction liquid in the flowing process.
The invention adopts the hydraulic rod principle to drive the oil pump, two hydraulic medium channels are formed through a sleeve type structure formed by an outer pipe and an inner pipe, wherein a medium channel connected with an upper chamber is formed by a pipe cavity (pipe hole) of the inner pipe, an annular gap between the inner pipe and the outer pipe forms a medium channel connected with a lower chamber, a hydraulic power system can be arranged on the ground, a hydraulic medium with certain pressure is fed into the upper chamber or the lower chamber through one medium channel, and the hydraulic medium in the other chamber is refluxed through the other medium channel, so that a piston is pushed to move up and down, and then the sucker rod is driven to move up and down. The oil pump can be arranged in an oil pipe above the oil pump in any adaptation mode, and the stroke of the device is adapted to the stroke of the oil pump. The installation and fixation of the device in the oil pipe can be realized by adopting the prior art (such as the installation and fixation technology of a rod-type oil pump in the oil pipe). The heat generated by the hydraulic medium in the operation process can analyze wax oil.
The piston is arranged in the inner tube and is connected with the sucker rod (sucker rod body or vertical transmission/connecting rod for the sucker rod body) below the piston. The piston is pushed by the hydraulic medium to move downwards, so that the sucker rod is pushed to move downwards to the bottom of the pump, when the bottom reaches a certain pressure, the hydraulic power system controls the medium to flow in a reverse direction, the piston is pushed to move upwards, the sucker rod is pulled to move upwards to the top end of the oil cylinder, a back-and-forth stroke working process of the oil pump is completed, and under the action of the hydraulic power system, the piston moves back and forth to drive the oil pump to work, so that the oil pumping process is completed.
The hydraulic power system on the ground is used for heating hydraulic oil in the liquid storage tank by a heater, two hydraulic oil inlets and outlets of the hydraulic power system are respectively connected with two medium channels of the device by high-pressure rubber pipes, and the connecting part is positioned at the upper part of the corresponding medium channel.
The hydraulic power system can adopt the prior art, and can generally comprise a hydraulic machine, a liquid storage tank and a circulating pump, and the pipeline connection of the devices is realized through a proper pipeline form, a heater is arranged in the liquid storage tank or on the pipeline to heat the hydraulic medium, and the heater is generally provided with a heating control system to perform heating control so as to ensure that the hydraulic medium reaches the required temperature or rise of the temperature.
The connecting pipes between the devices in the hydraulic power system and the connecting pipes between the hydraulic power system and the device can be in the form of high-pressure rubber pipes or other suitable pipes, for example, metal pipes in oil pipes.
The preferred and optional technical means disclosed in the invention may be combined arbitrarily to form a plurality of different technical schemes, except for the specific description and the further limitation that one preferred or optional technical means is another technical means.
Claims (9)
1. The oil pump driving and oil well heating device is characterized by comprising an inner pipe and an outer pipe sleeved on the outer side of the inner pipe, wherein an annular gap forming a medium channel is reserved between the outer pipe and the inner pipe, a piston which slides and is in sealing fit with the inner wall of the inner pipe is arranged in the inner pipe, the pipe cavity of the inner pipe is divided into an upper cavity and a lower cavity by the piston, lower bolts are arranged at the lower ends of the inner pipe and the outer pipe and are in unequal diameter cylindrical shapes and are provided with an inner pipe connecting section and an outer pipe connecting section, the lower ends of the inner pipe and the outer pipe are respectively connected with the outer sides of the inner pipe connecting section and the outer pipe connecting section of the lower bolts in a screwing mode, one or more radial through holes are formed in the lower bolts, the inner ports of the radial through holes of the lower bolts are connected with the central through holes, and the outer ports of the radial through holes of the lower bolts are positioned between the inner pipe connecting section and the outer pipe connecting section, the piston is connected with a piston rod which extends downwards, the piston rod penetrates through a central through hole of the lower bolt, a piston rod sealing device is arranged below the lower bolt, upper bolts are arranged at the upper ends of the inner pipe and the outer pipe, the upper bolts are in unequal diameter cylindrical shapes and are provided with outer pipe connecting sections, the upper ends of the outer pipes are screwed on the outer sides of the outer pipe connecting sections of the upper bolts, the lower end faces of the upper bolts are in pressure contact with the upper end ports of the inner pipes, the upper bolts are provided with an axial central through hole and one or more axial side through holes, the lower ports of the side through holes of the upper bolts are communicated with the annular gap between the outer pipe and the inner pipe, the tops of the upper bolts extend upwards from the outer pipe to form joint connecting parts for connecting joints, the joint is provided with an axial central through hole and one or more axial side through holes, the central through hole and the side through holes of the joint are respectively communicated with the central through hole and the side through holes of the upper bolt, the top of the central through hole of the joint is provided with a first pipeline interface, and the top of the side through hole of the joint is provided with a second pipeline interface.
2. The device of claim 1, wherein the piston rod sealing device comprises a stuffing box, the outer barrel of the stuffing box is cylindrical, the inner cavity of the stuffing box is conical with big end down, sealing stuffing is arranged, a compression spring is arranged above the stuffing, the upper end of the compression spring is abutted against the lower end face of the upper bolt, and the lower end of the compression spring is pressed on an annular stuffing pressing plate or on the stuffing.
3. The apparatus of claim 2 wherein the packing in the stuffing box is of a packing construction.
4. The device of claim 3, wherein the lower end of the outer packing box cylinder is a diameter-reduced section, an external thread is arranged, an upper sealing tube is screwed on the lower end of the outer packing box cylinder, an upper tube hole of the upper sealing tube is a diameter-enlarged tube hole, an internal thread for screwing on the outer packing box cylinder is arranged, and an upper sealing ring is arranged between the lower end face of the diameter-reduced part of the outer packing box cylinder and the inner end face of the diameter-enlarged tube hole of the upper sealing tube, and an annular gap for arranging the upper sealing ring forms a corresponding upper sealing groove.
5. The device of claim 4, wherein the lower end of the upper sealing tube is a reduced diameter section, an external thread is arranged, a lower sealing tube is screwed on the lower sealing tube, an upper tube hole of the lower sealing tube is an expanded diameter tube hole, an internal thread for screwing on the upper sealing tube is arranged, and a lower sealing ring is arranged between the lower end surface of the reduced diameter part of the upper sealing tube and the inner end surface of the expanded diameter tube hole of the lower sealing tube, and an annular gap for arranging the lower sealing ring forms a corresponding lower sealing groove.
6. The device according to claim 1, characterized in that the hydraulic power system is provided with heating means for heating the hydraulic medium.
7. The apparatus of claim 6, wherein said heating means is disposed within a reservoir of said hydraulic power system.
8. The apparatus of claim 1, wherein the lower end surface of the upper bolt is provided with an annular groove or annular step for inserting or fitting over the upper end port of the inner tube.
9. The device according to any one of claims 1-8, characterized in that the connection between the piston rod and the piston is a fixed connection or a movable connection, when the movable connection is adopted, the piston is provided with a tubular structure, the tubular structure of the piston is provided with an upper baffle plate and a lower baffle plate, the upper end head of the piston rod is provided with a space between the upper baffle plate and the lower baffle plate in the tubular structure of the piston and is in sliding fit with the inner wall of the tubular structure of the piston, the piston rod passes through a piston rod through hole in the middle part of the lower baffle plate, and a piston rod thrust spring is arranged in the tubular structure and is positioned between the upper baffle plate and the upper end head of the piston rod and is in a precompressed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910620120.4A CN110159231B (en) | 2019-07-10 | 2019-07-10 | Oil pump driving and oil well heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910620120.4A CN110159231B (en) | 2019-07-10 | 2019-07-10 | Oil pump driving and oil well heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110159231A CN110159231A (en) | 2019-08-23 |
| CN110159231B true CN110159231B (en) | 2024-03-01 |
Family
ID=67637840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910620120.4A Active CN110159231B (en) | 2019-07-10 | 2019-07-10 | Oil pump driving and oil well heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110159231B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4386654A (en) * | 1981-05-11 | 1983-06-07 | Becker John A | Hydraulically operated downhole oil well pump |
| CN2763575Y (en) * | 2005-01-24 | 2006-03-08 | 韩兴华 | Hydraulic oil pump |
| CN200996286Y (en) * | 2006-11-14 | 2007-12-26 | 龚智勇 | Intelligent hydraulic oil extracter |
| CN201225262Y (en) * | 2007-12-27 | 2009-04-22 | 国营第三八八厂 | Hydraulic power oil well pump |
| CN201439749U (en) * | 2009-05-14 | 2010-04-21 | 王仲茂 | Wear-prevention oil pump |
| CN206988079U (en) * | 2017-06-07 | 2018-02-09 | 河南中原总机泵业有限公司 | A kind of fluid pressure type oil well pump |
| CN210217694U (en) * | 2019-07-10 | 2020-03-31 | 刘世江 | Oil well pump driving and oil well heating device |
-
2019
- 2019-07-10 CN CN201910620120.4A patent/CN110159231B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4386654A (en) * | 1981-05-11 | 1983-06-07 | Becker John A | Hydraulically operated downhole oil well pump |
| CN2763575Y (en) * | 2005-01-24 | 2006-03-08 | 韩兴华 | Hydraulic oil pump |
| CN200996286Y (en) * | 2006-11-14 | 2007-12-26 | 龚智勇 | Intelligent hydraulic oil extracter |
| CN201225262Y (en) * | 2007-12-27 | 2009-04-22 | 国营第三八八厂 | Hydraulic power oil well pump |
| CN201439749U (en) * | 2009-05-14 | 2010-04-21 | 王仲茂 | Wear-prevention oil pump |
| CN206988079U (en) * | 2017-06-07 | 2018-02-09 | 河南中原总机泵业有限公司 | A kind of fluid pressure type oil well pump |
| CN210217694U (en) * | 2019-07-10 | 2020-03-31 | 刘世江 | Oil well pump driving and oil well heating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110159231A (en) | 2019-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220243724A1 (en) | Fluid splitter, fluid end and plunger pump | |
| CN106460810B (en) | Hydraulic-driven bellowspump | |
| CN110593762B (en) | Reciprocating low-pressure high-frequency hydraulic pulse vibrator | |
| CN115405514A (en) | Fluid end and plunger pump | |
| CN105008659B (en) | Pit shaft transmission equipment | |
| CN210217694U (en) | Oil well pump driving and oil well heating device | |
| CN110159231B (en) | Oil pump driving and oil well heating device | |
| CN108799039B (en) | High-viscosity transfer pump device incapable of flowing slurry automatically | |
| CN209195663U (en) | Oil-well pump | |
| US4536137A (en) | Submergible pumping apparatus | |
| CN204532276U (en) | Fluid pressure linkage double acting Rodless oil extraction device | |
| CN108150121A (en) | Jet flow pressurizing formula electric hydaulic bridge plug setting tool | |
| CN206458381U (en) | A kind of hydraulic control liquid drives continuous pipe drilling tractor | |
| CN100395427C (en) | Oil production method with no pole and oil production system | |
| RU2644797C1 (en) | Oil well pump | |
| CN112983293B (en) | Quick-connection type water braid | |
| US20230184238A1 (en) | Pumping system having remote valve blocks | |
| CN114482950B (en) | Injection increasing device for water injection well | |
| CN108561306B (en) | Double-acting full-balance inlet high-pressure hydraulic end | |
| CN108071358B (en) | Electric hydraulic three-stage piston packer feeding device | |
| CN206458370U (en) | A kind of continuous pipe drilling tractor hydraulic control slip system | |
| CN107939361B (en) | Foam liquid discharge oil production string and method for oil pumping well | |
| RU2622579C2 (en) | Drill boring opposed pump | |
| CN2720147Y (en) | Rod free oil-production system equipment | |
| CN206600321U (en) | A kind of continuous pipe drilling tractor axial propulsion cylinder of hydraulic control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240124 Address after: 061699 Shuanggao Technology Demonstration Park, Dongguang Economic Development Zone, Cangzhou City, Hebei Province Applicant after: DONGGUANG COUNTY YUANDONG PETROLEUM EQUIPMENT Co.,Ltd. Country or region after: China Address before: 061699 No. 126, Xiazhuang village, Dongguang Town, Dongguang County, Cangzhou City, Hebei Province Applicant before: Liu Shijiang Country or region before: China |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |