CN111520115A - Zero-clearance oil-gas mixed pumping device and method - Google Patents
Zero-clearance oil-gas mixed pumping device and method Download PDFInfo
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- CN111520115A CN111520115A CN202010243017.5A CN202010243017A CN111520115A CN 111520115 A CN111520115 A CN 111520115A CN 202010243017 A CN202010243017 A CN 202010243017A CN 111520115 A CN111520115 A CN 111520115A
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- oil pipe
- oil
- pump cylinder
- liquid inlet
- plunger
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
Abstract
The invention belongs to the field of oil and gas resource development, and particularly relates to a zero-clearance gas-liquid mixed pumping device. Zero clearance oil gas thoughtlessly takes out device includes: the liquid inlet control pipe comprises a third oil pipe, a liquid inlet control short section, a second oil pipe, a second pump cylinder, a first pump cylinder, a fixed valve and a first oil pipe; the top of the third oil pipe is connected with the bottom of the liquid inlet control nipple, the top of the liquid inlet control nipple is connected with the lower part of the second oil pipe, the upper part of the second oil pipe is connected with the bottom of the second pump cylinder, and the upper part of the first pump cylinder is connected with the bottom of the first oil pipe. Compared with the prior art, the invention has the following beneficial effects: the clearance of the oil well pump is reduced to 0, so that the pump efficiency is obviously improved, and the damage of 'air lock' and 'liquid impact' to equipment is avoided; the gas compression energy in the formation fluid can be utilized to assist lifting, so that the energy consumption is reduced; high economic benefit, and can improve the pump efficiency by more than 50% compared with the prior oil well pump.
Description
Technical Field
The invention belongs to the field of oil-gas resource development, and particularly relates to a zero-clearance gas-liquid mixed pumping device and a zero-clearance gas-liquid mixed pumping method.
Background
How to lift crude oil in an oil well to the ground efficiently in the oil development process is crucial, and the method mainly used at present is to lift the crude oil to the ground by descending an oil well pump in the oil well, and the types of the oil well pumps commonly used at present comprise: tube pumps and rod pumps, which suffer from the following three disadvantages.
1. Large clearance and low pump efficiency. Fig. 1 is a schematic diagram showing the operation of the prior art oil well pump, in which "bottom dead center" indicates that the plunger is located at the lowest position, and "top dead center" indicates that the plunger is located at the highest position. The clearance between the bottom surface of the plunger and the bottom surface of the cylinder when the plunger is at bottom dead center, referred to as the clearance, V in the figureS。VPIs the effective volume of the pump cylinder; v1The total volume of liquid in the pump cylinder when the plunger moves to the top dead center; v2According to the existing theory, a pump cylinder filling coefficient β is used for representing the pump effect of an oil well pump, the larger the β is, the higher the pump effect is, the smaller the β is, the lower the pump effect is, and the calculation formula is as follows:
β＝V2/VP(1)
and R represents the gas-liquid ratio in the pump as follows:
R＝Vg/V1(2)
the clearance ratio K is:
K＝VS/VP(3)
bringing formulae (2) and (3) into formula (1) gives:
as can be seen from fig. 1, since the standing valve of the existing oil well pump is located at the bottom of the pump barrel, in order to protect the standing valve and prevent the plunger from colliding with the bottom of the pump barrel, a safety distance, generally an anti-collision distance, i.e. a clearance V, needs to be set between the plunger and the bottom of the pump barrelSIs a constant greater than 0. Considering that solid particles such as sand in an oil reservoir may be pumped into the pump barrel with formation fluid during actual production, the clearance is often designed to be large. According to the expressions (1) to (4), the clearance VSThe larger β the smaller the pump efficiency.
2. Gas-liquid mixed pumping cannot be realized. According to the formulas (1) to (4), the pumping efficiency of the existing oil well pump is obviously reduced when stratum fluid contains a large amount of gas. Meanwhile, because the gas density is obviously lower than that of the formation liquid, the upper part of the clearance space is filled with the gas, and for oil-gas reservoirs with high gas-oil ratio, the whole clearance is completely filled with the gas, and the gas has better compressibility. When the plunger is moved downwards, the gas will be compressed, resulting in the liquid in the pump cylinder not being effectively expelled by the plunger. In severe cases, a "airlock" will occur, resulting in the liquid in the pump barrel being completely unable to be lifted to the surface. Thirdly, due to the presence of a certain amount of gas in the pump barrel, a "liquid hammer" phenomenon can occur when the plunger moves downwards, which accelerates the wear of the plunger and the pump barrel and the damage of ground equipment. The reasons greatly reduce the applicability of the existing oil well pump in the oil deposit with high gas-oil ratio.
3. The gas expansion energy in the crude oil cannot be utilized to assist the lifting. Because the existing oil well pump cannot be suitable for exploitation of oil-gas reservoirs with high gas-oil ratio, gas in formation liquid (crude oil and water) is separated in the production process, the gas is discharged through an oil sleeve annulus, and then the formation liquid is extracted. Therefore, the compression energy of the high-pressure gas in the formation fluid cannot be fully utilized to assist the lifting and improve the efficiency.
Therefore, it is urgently needed to invent a zero-clearance oil-gas mixed pumping device and a zero-clearance oil-gas mixed pumping method, so that the clearance of an oil well pump is reduced, the efficient development of a high-gas-oil-ratio oil reservoir is realized, and the efficiency of the oil well pump is improved.
Disclosure of Invention
Aiming at the defects that the oil well pump adopted at present generally has large clearance and can not be suitable for high gas-oil ratio oil reservoirs and compressed gas expansion energy can not be utilized, the invention provides a zero-clearance oil-gas mixed pumping device and a method, which overcome the defects of the existing oil well pump, obviously improve the efficiency of the oil well pump and reduce the failure rate of underground and ground equipment.
In order to achieve the purpose, the invention adopts the following technical scheme:
zero clearance oil gas thoughtlessly takes out device includes: the liquid inlet control pipe comprises a third oil pipe, a liquid inlet control short section, a second oil pipe, a second pump cylinder, a first pump cylinder, a fixed valve and a first oil pipe; the top of the third oil pipe is connected with the bottom of the liquid inlet control nipple, the top of the liquid inlet control nipple is connected with the lower part of the second oil pipe, the upper part of the second oil pipe is connected with the bottom of the second pump cylinder, and the upper part of the first pump cylinder is connected with the bottom of the first oil pipe.
Compared with the prior art, the invention has the following beneficial effects: the clearance of the oil well pump is reduced to 0, so that the pump efficiency is obviously improved, and the damage of 'air lock' and 'liquid impact' to equipment is avoided; the gas compression energy in the formation fluid can be utilized to assist lifting, so that the energy consumption is reduced; high economic benefit, and can improve the pump efficiency by more than 50% compared with the prior oil well pump.
Drawings
FIG. 1 is a schematic diagram of the prior art pump;
FIG. 2 is a schematic diagram of the operation of the zero clearance oil-gas co-pumping device;
FIG. 3 is a schematic structural view of a zero clearance oil-gas co-pumping device;
in the figure: 1. a sucker rod; 2. a first oil pipe; 3. a first pump barrel; 4. a conical shell; 5. a liquid outlet; 6. a cylindrical housing; 7. a fixed valve; 8. a plunger; 9. a traveling valve; 10. a dead space; 11. a second pump barrel; 12. blending thin oil; 13. a second oil pipe; 14. diluting and washing a well valve; 15. a liquid inlet valve; 16. liquid inlet control short joints; 17. formation fluids and gases; 18. sealing the antifriction sleeve; 19. a third oil pipe; 20. a sleeve.
Detailed Description
As shown in fig. 2, according to the definition of the clearance: the clearance between the bottom surface of the plunger and the bottom surface of the cylinder when the plunger is at bottom dead center, referred to as the clearance, V in the figureS(ii) a Because the fixed valve is positioned on the side surface of the pump barrel, when the plunger is positioned at the bottom dead center, the plunger is positioned below the fixed valve, and the clearance V can be realizedSZero or negative; when the plunger moves upwards, the fixed valve is opened, and formation liquid and gas enter the pump cylinder; after the formation liquid and the gas enter the pump barrel through the fixed valve, the gas automatically moves to the top of the pump barrel under the action of gravity due to low gas density and high formation liquid density, and the formation liquid moves to the bottom of the pump barrel; when the plunger moves downwards, the gas in the top of the pump cylinder is firstly discharged through the traveling valve at the bottom of the plunger; because the fixed valve is positioned above the dead cavity and the plunger can move to a position below the fixed valve, the dead cavity of the pump cylinder can be ensured to be filled with liquid, and gas does not exist in the dead cavity and a clearance (equal to zero), so that gas lock and liquid impact do not exist, and oil and gas mixed pumping can be realized; in addition, the oil-gas mixed pumping is realized, so that the gas expansion energy can be fully facilitated, the lifting efficiency is improved, and the energy consumption is reduced; the main technical principle and the technical advantages of the zero-clearance oil-gas mixed pumping device are provided;
as shown in fig. 3, the zero clearance oil-gas mixture pumping device includes: a third oil pipe 19, a liquid inlet control short section 16, a second oil pipe 13, a second pump cylinder 11, a first pump cylinder 3, a fixed valve 7 and a first oil pipe 2; the top of the third oil pipe 19 is connected with the bottom of the liquid inlet control short section 16, the top of the liquid inlet control short section 16 is connected with the lower part of the second oil pipe 13, the upper part of the second oil pipe 13 is connected with the bottom of the second pump barrel 11, and the upper part of the first pump barrel 3 is connected with the bottom of the first oil pipe 2; wherein:
the third oil pipe 19 is fixed with a sleeve 20 through an antifriction sleeve seal 18, and the antifriction sleeve seal 18 divides the oil sleeve annulus into an upper independent space and a lower independent space; the oil sleeve annulus at the lower part of the antifriction sleeve seal 18 is filled with formation fluid and gas, and the oil sleeve annulus at the upper part of the antifriction sleeve seal 18 is filled with the diluent oil;
the liquid inlet control short section 16 is a hollow cylinder, and a partition is arranged in the middle of the hollow cylinder to divide the liquid inlet control short section 16 into a left independent space and a right independent space; the bottom of the left space is provided with a liquid inlet valve 15, and the top of the right space is provided with a dilution well washing valve 14; the liquid inlet valve 15 is communicated with the third oil pipe and is used for controlling formation liquid and gas to pass through; the thin oil mixing well flushing valve 14 is connected with an oil sleeve annulus on the upper part of the antifriction sleeve seal 18 and is used for controlling the thin oil mixing 12 to pass through;
the second oil pipe 13 is used for conveying the formation liquid, the gas and the diluent oil which are conveyed from the liquid inlet valve 15 and the diluent flushing valve 14 to the second pump barrel 11; the distance between the liquid inlet valve 15 and the bottom of the second pump barrel 11 is 0.5-1.5 m; the second pump barrel 11 is a bottomless cylinder, the first pump barrel 3 is installed in the second pump barrel 11, the first pump barrel 3 is a cylinder without a top and a bottom, and the outer diameter of the first pump barrel is smaller than the inner diameter of the second pump barrel; the second pump barrel 11 is tightly connected with the first pump barrel 3 at the left side, the bottom of the second pump barrel 11 is lower than the bottom of the first pump barrel 3, and a gap is reserved between the bottom of the second pump barrel and the bottom of the first pump barrel; a gap is formed between the second pump cylinder 11 and the right side of the first pump cylinder 3, a fixed valve 7 is arranged in the gap, and the fixed valve 7 is used for controlling formation liquid, gas and thin oil in the second pump cylinder to enter the first pump cylinder;
a plunger 8 is arranged in the first pump barrel, the plunger 8 is of a combined structure, the lower part of the plunger 8 is a cylindrical shell 6 without a top and a bottom, the upper part of the plunger 8 is a conical shell 4 without a bottom, and the top of the cylindrical shell 6 is connected with the bottom of the conical shell 4; a liquid outlet 5 is arranged on the top surface of the conical shell 4, and the liquid outlet 5 is used for discharging formation liquid, gas 17 and thin oil 12 in the plunger 8; the bottom end of the plunger is provided with a traveling valve 9 for controlling formation liquid, gas and thin oil in the first pump cylinder to flow into the plunger 8; the top end of the plunger 8 is connected with the bottom of the sucker rod 1 and is used for driving the plunger to reciprocate up and down; the space between the bottom of the first cylinder and the bottom of the cylindrical housing 6 when the plunger moves to the bottom dead center position is referred to as the dead space 10; because the main components of the formation fluid are water and crude oil, wherein the density of the water is the largest, the density of the oil is the second, the density of the gas is the smallest, and a dead space is filled with water or an oil-water mixture under the action of gravity;
the fixed valve 7 is located above the bottom surface of the plunger 8 in the bottom dead center position (see fig. 2), preferably, the distance between the bottom surface of the plunger and the fixed valve in the bottom dead center position is 0.5m to 1.0 m; because the fixed valve is positioned above the dead cavity and the plunger can move to a position below the fixed valve, the clearance of the oil well pump is reduced to 0, the dead cavity can be ensured to be filled with liquid, and the influence of gas in the dead cavity on the pump efficiency is thoroughly eliminated; when the plunger moves upwards, the fixed valve is opened, and formation liquid, gas and diluent oil enter the first pump cylinder; after the formation liquid, the gas and the doped thin oil enter the first pump cylinder through the fixed valve, the gas moves to the top of the first pump cylinder under the action of gravity due to low gas density and high formation liquid density, and the formation liquid moves to the bottom of the first pump cylinder; when the plunger moves downwards, gas in the first pump cylinder is discharged through the traveling valve at the bottom of the plunger, and oil-gas mixed pumping is achieved.
The zero-clearance oil-gas mixed pumping method adopts the zero-clearance oil-gas mixed pumping device and comprises the following steps:
s1, preparing a shaft
Determining the inner and outer diameter sizes of a first oil pipe, the inner and outer diameter sizes of a second oil pipe, the inner and outer diameter sizes of a third oil pipe, the size of a first pump cylinder, the size of a second pump cylinder, the type and size of an antifriction sleeve seal, the setting depth of the first oil pipe, the setting depth of the second oil pipe, the setting depth of the third oil pipe, the setting depth of the antifriction sleeve seal, the setting depth of the first pump cylinder and the setting depth of the second pump cylinder according to the selected target wellbore depth, the wellbore size, the wellbore track and the wellbore liquid supply capacity; cleaning a selected target shaft, and ensuring that a first oil pipe, a second oil pipe, a third oil pipe, a first pump cylinder, a second pump cylinder, a sucker rod, a liquid inlet control short section and an antifriction sleeve seal can be smoothly put into a designed depth; collecting well history data, and combining the requirements of site construction operation to complete the installation construction design of the oil well pump;
s2, mounting of third oil pipe and antifriction sleeve seal
Installing the antifriction sleeve seals on the corresponding third oil pipe single pieces according to the third oil pipe setting depth and the antifriction sleeve seals setting depth; the quality of the antifriction sleeve seal is checked before and after installation, the integrity of the antifriction sleeve seal before and after installation is ensured, and the antifriction sleeve seal can work normally after being placed into a shaft;
s3 installation of liquid inlet control short joint
A liquid inlet valve and a doped dilute well washing valve in the liquid inlet control short section are checked to ensure the completeness of the liquid inlet valve and the doped dilute well washing valve; according to the design of the liquid inlet control short section, the penetration depth is set, and the bottom of the liquid inlet control short section is arranged on the top of a third oil pipe single piece with the corresponding depth; connecting the bottom of the second oil pipe with the top end of the liquid inlet control nipple; after the installation of the liquid inlet control short section is finished, the performance of the liquid inlet control short section is detected, and the normal work of a liquid inlet valve and a diluting well washing valve is ensured;
s4, pump barrel and fixed valve installation
The method comprises the following steps of mounting a first pump cylinder and a second pump cylinder together, mounting a fixed valve at a design position on the right side of the second pump cylinder and the first pump cylinder, and detecting the integrity of the fixed valve; when the plunger is in the state of the bottom dead center position, the distance between the bottom surface of the plunger and the fixed valve is 0.5 m-1.0 m; the distance between the bottom of the second pump cylinder and the liquid inlet valve is 0.5-1.5 m; according to the design of the setting depth of the second pump cylinder, the bottom of the second pump cylinder is connected with the top of a single second oil pipe with the corresponding design depth; installing the top of the first pump cylinder at the bottom of the corresponding first oil pipe;
s5, setting the first oil pipe
The installation of the components in S2, S3 and S4 is completed in sequence, the components in the steps S2, S3 and S4 are sequentially lowered into a well hole in a mode that an oil pipe is connected with a single piece, the lowering speed of the oil pipe is not more than 1/2 min until the design depth, and the lowering of a first oil pipe is completed; then finishing the setting of the antifriction sleeve seal, and detecting the sealing effect of the antifriction sleeve seal;
s6, plunger is put into
Installing a traveling valve on the inner side of the bottom of a plunger, and connecting the top of the plunger with a sucker rod; the sucker rod and the plunger are put into an oil pipe in a mode of connecting a single sucker rod, the putting speed is not more than 1 per minute until the hanging weight of a well head is zero and the sucker rod cannot be put in, and the plunger is contacted with the bottom of the pump barrel at the moment; after standing for 10 minutes, lifting the sucker rod upwards by an anti-impact distance (0.3 m-0.5 m) to finish the descending of the plunger;
s7 production operation
The pumping rod and the plunger are driven to reciprocate by a wellhead power device, so that the extraction of stratum fluid and gas at the bottom of a well is realized; and determining the type of the blended thin oil and the injection speed of the blended thin oil according to the physical parameters of the actual oil reservoir.
Therefore, the method can effectively solve the defects that the existing oil well pump has large clearance, low pumping efficiency, can not realize oil-gas mixed pumping and can not be beneficial to the expansion of gas in the formation liquid to assist the lifting of the formation liquid, and has the advantages of clear operation steps, clear parameters and strong operability.
Claims (10)
1. A zero clearance oil gas is thoughtlessly taken out device includes: the liquid inlet control pipe comprises a third oil pipe, a liquid inlet control short section, a second oil pipe, a second pump cylinder, a first pump cylinder, a fixed valve and a first oil pipe; the method is characterized in that: the top of the third oil pipe is connected with the bottom of the liquid inlet control nipple, the top of the liquid inlet control nipple is connected with the lower part of the second oil pipe, the upper part of the second oil pipe is connected with the bottom of the second pump cylinder, and the upper part of the first pump cylinder is connected with the bottom of the first oil pipe.
2. The zero clearance oil-gas co-pumping device of claim 1, characterized in that: the third oil pipe is fixed with the sleeve through an antifriction sleeve seal; the liquid inlet control short section is a hollow cylinder, and a partition is arranged in the middle of the hollow cylinder to divide the liquid inlet control short section into a left independent space and a right independent space; and a liquid inlet valve is installed at the bottom of the left space and communicated with a third oil pipe, and a diluted flushing valve is installed at the top of the right space and connected with an oil sleeve annulus on the upper part of the antifriction sleeve seal.
3. The zero clearance oil-gas co-pumping device of claims 1-2, characterized in that: the second pump cylinder is a bottomless cylinder, a first pump cylinder is arranged in the second pump cylinder, the first pump cylinder is a top-free and bottom-closed cylinder, and the outer diameter of the first pump cylinder is smaller than the inner diameter of the second pump cylinder; the second pump cylinder is tightly connected with the first pump cylinder on the left side, the bottom of the second pump cylinder is lower than the bottom of the first pump cylinder, and a space is reserved between the bottom of the second pump cylinder and the bottom of the first pump cylinder; the second pump cylinder and the right side of the first pump cylinder form a gap, and a fixed valve is installed in the gap.
4. The zero clearance oil-gas co-pumping device of claims 1-3, characterized in that: a plunger is arranged in the first pump barrel and is of a combined structure.
5. The zero clearance oil-gas co-pumping device of claims 1-4, characterized in that: the lower part of the plunger is a cylindrical shell without a top and a bottom, the upper part of the plunger is a conical shell without a bottom, and the top of the cylindrical shell is connected with the bottom of the conical shell; set up the liquid outlet on the circular cone casing top surface, the plunger bottom sets up traveling valve, and the plunger top links to each other with the sucker rod bottom.
6. The zero clearance oil-gas co-pumping device of claims 1-5, characterized in that: the standing valve is located above the bottom surface of the plunger when in the bottom dead center position.
7. The zero clearance oil-gas co-pumping device of claims 1-6, characterized in that: the distance between the bottom surface of the plunger and the fixed valve when the plunger is at the bottom dead center position is 0.5 m-1.0 m.
8. The zero clearance oil-gas co-pumping device of claims 1-7, characterized in that: the distance between the liquid inlet valve and the bottom of the second pump cylinder is 0.5-1.5 m.
9. A zero clearance oil-gas co-pumping method, which adopts the zero clearance oil-gas co-pumping device of claims 1-8, and is characterized by comprising the following steps:
s1, preparing a shaft
Determining the inner and outer diameter sizes of a first oil pipe, the inner and outer diameter sizes of a second oil pipe, the inner and outer diameter sizes of a third oil pipe, the size of a first pump cylinder, the size of a second pump cylinder, the type and size of an antifriction sleeve seal, the setting depth of the first oil pipe, the setting depth of the second oil pipe, the setting depth of the third oil pipe, the setting depth of the antifriction sleeve seal, the setting depth of the first pump cylinder and the setting depth of the second pump cylinder according to the selected target wellbore depth, the wellbore size, the wellbore track and the wellbore liquid supply capacity; cleaning a selected target shaft, and ensuring that a first oil pipe, a second oil pipe, a third oil pipe, a first pump cylinder, a second pump cylinder, a sucker rod, a liquid inlet control short section and an antifriction sleeve seal can be smoothly put into a designed depth; collecting well history data, and combining the requirements of site construction operation to complete the installation construction design of the oil well pump;
s2, mounting of third oil pipe and antifriction sleeve seal
Installing the antifriction sleeve seals on the corresponding third oil pipe single pieces according to the third oil pipe setting depth and the antifriction sleeve seal setting depth; the quality of the antifriction sleeve seal is checked before and after installation, the integrity of the antifriction sleeve seal before and after installation is ensured, and the antifriction sleeve seal can work normally after being placed into a shaft;
s3 installation of liquid inlet control short joint
A liquid inlet valve and a doped dilute well washing valve in the liquid inlet control short section are checked to ensure the completeness of the liquid inlet valve and the doped dilute well washing valve; according to the design of the liquid inlet control short section, the penetration depth is set, and the bottom of the liquid inlet control short section is arranged on the top of a third oil pipe single piece with the corresponding depth; connecting the bottom of the second oil pipe with the top end of the liquid inlet control nipple; after the installation of the liquid inlet control short section is finished, the performance of the liquid inlet control short section is detected, and the normal work of a liquid inlet valve and a diluting well washing valve is ensured;
s4, pump barrel and fixed valve installation
The method comprises the following steps of mounting a first pump cylinder and a second pump cylinder together, mounting a fixed valve at a design position on the right side of the second pump cylinder and the first pump cylinder, and detecting the integrity of the fixed valve; when the plunger is in the state of the bottom dead center position, the distance between the bottom surface of the plunger and the fixed valve is 0.5 m-1.0 m; the distance between the bottom of the second pump cylinder and the liquid inlet valve is 0.5-1.5 m; according to the design of the setting depth of the second pump cylinder, the bottom of the second pump cylinder is connected with the top of a single second oil pipe with the corresponding design depth; installing the top of the first pump cylinder at the bottom of the corresponding first oil pipe;
s5, setting the first oil pipe
The installation of the components in S2, S3 and S4 is completed in sequence, the components in the steps S2, S3 and S4 are sequentially lowered into a well hole in a mode that an oil pipe is connected with a single piece, the lowering speed of the oil pipe is not more than 1/2 min until the design depth, and the lowering of a first oil pipe is completed; then finishing the setting of the antifriction sleeve seal, and detecting the sealing effect of the antifriction sleeve seal;
s6, plunger is put into
Installing a traveling valve on the inner side of the bottom of a plunger, and connecting the top of the plunger with a sucker rod; the pumping rod and the plunger are put into the first oil pipe in a mode of connecting a single pumping rod, the putting speed is not more than 1 per minute until the hanging weight of a well head is zero and the pumping rod cannot be put in, and the plunger is contacted with the bottom of the pump barrel at the moment; after standing for 10 minutes, lifting the sucker rod upwards by an anti-impact distance to finish the descending of the plunger;
s7 production operation
The pumping rod and the plunger are driven to reciprocate by a wellhead power device, so that the extraction of stratum fluid and gas at the bottom of a well is realized; and determining the type of the blended thin oil and the injection speed of the blended thin oil according to the physical parameters of the actual oil reservoir.
10. The zero clearance oil-gas co-pumping method of claim 9, wherein the impingement distance is 0.3-0.5 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010243017.5A CN111520115B (en) | 2020-03-31 | 2020-03-31 | Zero-clearance oil-gas mixed pumping device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010243017.5A CN111520115B (en) | 2020-03-31 | 2020-03-31 | Zero-clearance oil-gas mixed pumping device and method |
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Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1185119A (en) * | 1982-01-14 | 1985-04-09 | Jack A. Barnard | Method and apparatus for raising well fluids |
| CN2161748Y (en) * | 1993-04-22 | 1994-04-13 | 吉林省油田管理局新木采油厂 | Piston-type gas-proof well pump |
| CN1904363A (en) * | 2005-07-26 | 2007-01-31 | 凌建军 | Method and device of improving effect of rod oil pump and realizing energy saving of rod oil pump |
| CN2898365Y (en) * | 2006-04-26 | 2007-05-09 | 中国石油天然气股份有限公司 | Double-stage passageway synergistic oil pump |
| US20100092314A1 (en) * | 2008-10-09 | 2010-04-15 | Cifuentes Carlos Alberto | Deep force pump for oil wells |
| CN201507428U (en) * | 2009-08-28 | 2010-06-16 | 中国石油化工股份有限公司 | Thermal recovery eccentric heavy oil pump |
| CN201778985U (en) * | 2010-01-12 | 2011-03-30 | 蒋海岩 | Thinning oil-well pump in thickened oil recovery |
| US20130032341A1 (en) * | 2011-08-01 | 2013-02-07 | Raglin John M | Down-Hole Gas Separator |
| CN103104221A (en) * | 2011-11-09 | 2013-05-15 | 何丽 | Improved down-hole device of oil well thinner tubing pump and working method thereof |
| CN103133327A (en) * | 2011-11-28 | 2013-06-05 | 潘美林 | Method for testing influences of clearance volume on fullness coefficient |
| CN203463264U (en) * | 2013-09-09 | 2014-03-05 | 山东寿光市坤隆石油机械股份有限公司 | Eccentric oil inlet respective-pumping and mixed-outtake oil pump |
| CN105626491A (en) * | 2016-03-18 | 2016-06-01 | 中联煤层气国家工程研究中心有限责任公司 | Drainage and gas production pump with burying prevention liquid inlet valve |
| CN106894798A (en) * | 2017-04-07 | 2017-06-27 | 中国石油天然气股份有限公司 | Oil extraction system and oil production method |
| CN206397478U (en) * | 2016-12-26 | 2017-08-11 | 胜利油田金岛实业有限责任公司 | Bigoted pump |
| CN107269249A (en) * | 2017-06-24 | 2017-10-20 | 东北石油大学 | Bias delivery valve minor diameter oil well pump |
| CN110318727A (en) * | 2018-03-29 | 2019-10-11 | 中国石油天然气股份有限公司 | Oil well hoisting system for gas-tight |
| CN110374848A (en) * | 2019-06-13 | 2019-10-25 | 中国石油化工股份有限公司 | Note adopts integral type suction pump |
| CN110761982A (en) * | 2018-07-26 | 2020-02-07 | 中国石油化工股份有限公司 | Variable-displacement injection-production integrated lifting device |
-
2020
- 2020-03-31 CN CN202010243017.5A patent/CN111520115B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1185119A (en) * | 1982-01-14 | 1985-04-09 | Jack A. Barnard | Method and apparatus for raising well fluids |
| CN2161748Y (en) * | 1993-04-22 | 1994-04-13 | 吉林省油田管理局新木采油厂 | Piston-type gas-proof well pump |
| CN1904363A (en) * | 2005-07-26 | 2007-01-31 | 凌建军 | Method and device of improving effect of rod oil pump and realizing energy saving of rod oil pump |
| CN2898365Y (en) * | 2006-04-26 | 2007-05-09 | 中国石油天然气股份有限公司 | Double-stage passageway synergistic oil pump |
| US20100092314A1 (en) * | 2008-10-09 | 2010-04-15 | Cifuentes Carlos Alberto | Deep force pump for oil wells |
| CN201507428U (en) * | 2009-08-28 | 2010-06-16 | 中国石油化工股份有限公司 | Thermal recovery eccentric heavy oil pump |
| CN201778985U (en) * | 2010-01-12 | 2011-03-30 | 蒋海岩 | Thinning oil-well pump in thickened oil recovery |
| US20130032341A1 (en) * | 2011-08-01 | 2013-02-07 | Raglin John M | Down-Hole Gas Separator |
| CN103104221A (en) * | 2011-11-09 | 2013-05-15 | 何丽 | Improved down-hole device of oil well thinner tubing pump and working method thereof |
| CN103133327A (en) * | 2011-11-28 | 2013-06-05 | 潘美林 | Method for testing influences of clearance volume on fullness coefficient |
| CN203463264U (en) * | 2013-09-09 | 2014-03-05 | 山东寿光市坤隆石油机械股份有限公司 | Eccentric oil inlet respective-pumping and mixed-outtake oil pump |
| CN105626491A (en) * | 2016-03-18 | 2016-06-01 | 中联煤层气国家工程研究中心有限责任公司 | Drainage and gas production pump with burying prevention liquid inlet valve |
| CN206397478U (en) * | 2016-12-26 | 2017-08-11 | 胜利油田金岛实业有限责任公司 | Bigoted pump |
| CN106894798A (en) * | 2017-04-07 | 2017-06-27 | 中国石油天然气股份有限公司 | Oil extraction system and oil production method |
| CN107269249A (en) * | 2017-06-24 | 2017-10-20 | 东北石油大学 | Bias delivery valve minor diameter oil well pump |
| CN110318727A (en) * | 2018-03-29 | 2019-10-11 | 中国石油天然气股份有限公司 | Oil well hoisting system for gas-tight |
| CN110761982A (en) * | 2018-07-26 | 2020-02-07 | 中国石油化工股份有限公司 | Variable-displacement injection-production integrated lifting device |
| CN110374848A (en) * | 2019-06-13 | 2019-10-25 | 中国石油化工股份有限公司 | Note adopts integral type suction pump |
Non-Patent Citations (7)
| Title |
|---|
| WANG, C等: "Calculation Formula Optimization and Effect of Ring Clearance on Axial Force of Multistage Pump", 《MATHEMATICAL PROBLEMS IN ENGINEERING》 * |
| YANG, Y等: "EFFECT OF ROTATING SPEED ON PERFORMANCE OF ELECTRICAL SUBMERSIBLE PUMP", 《PROCEEDINGS OF THE ASME/JSME/KSME JOINT FLUIDS ENGINEERING CONFERENCE》 * |
| 万国强等: "基于FLUENT的液气混抽泵动态模拟与现场应用分析", 《石油机械》 * |
| 张琪等: "《油气开采技术新进展》", 31 December 2006, 中国石油大学出版社 * |
| 李根生等: "高油气比井液力混抽增效机理及应用", 《石油钻探技术》 * |
| 杜亚军: "新型偏心抽稠泵在新庄油田的应用", 《石油地质与工程》 * |
| 肖世宏等: "钢质连续抽油杆应用及发展前景探讨", 《石油矿场机械》 * |
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