CN112627781B - A high-efficiency lifting method and pipe string for deep oil and gas reservoirs with graded pumping assistance - Google Patents
A high-efficiency lifting method and pipe string for deep oil and gas reservoirs with graded pumping assistance Download PDFInfo
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- CN112627781B CN112627781B CN201910956323.0A CN201910956323A CN112627781B CN 112627781 B CN112627781 B CN 112627781B CN 201910956323 A CN201910956323 A CN 201910956323A CN 112627781 B CN112627781 B CN 112627781B
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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
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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
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
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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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
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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
- E21B43/14—Obtaining from a multiple-zone well
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Abstract
The invention discloses a deep oil and gas reservoir grading pumping-assisting efficient lifting method and a pipe column, wherein the method comprises the following steps of collecting oil well early production data, analyzing oil-water connectivity corresponding to water well data, and analyzing the thickness degree, sand content, corrosiveness, waxiness, gas content and water content of an oil reservoir; the method comprises the steps of selecting an adaptive vibrator according to an analysis result of an oil reservoir, selecting an applicable oil pipe according to fluid analysis characteristics, designing a distance between two or more pumping aids according to pump depth and fluid characteristics, constructing according to a design result, firstly setting a tubular column, then setting the tubular column to test pressure, setting a sucker rod to be connected with a liquid pump after the tubular column is qualified in pressure test, and performing normal production after the sucker rod is connected with the liquid pump and the pumping pressure test is qualified. According to the characteristics of the reservoir, the matched vibrator is optimally applied, so that the seepage capability of the reservoir can be improved, the effect of quick oil extraction is achieved, and the distribution optimization of the pumping assisting device is carried out according to the characteristics of the fluid.
Description
Technical Field
The invention relates to the technical field of oil extraction equipment, in particular to a deep oil and gas reservoir grading pumping-assisting efficient lifting method and a pipe column.
Background
The low-permeability oil well has the characteristics of low reservoir permeability and deep burial depth. The oil wells are blocked by solid particles in the well washing operation process due to mud pollution in the well drilling process, the reservoir production is low, the blockage is difficult to remove by the conventional blockage removing process, in addition, the pump hanging is deeper, the rod column stroke loss is large, the fluid contains gas, the pump barrel is low in filling degree, and the lifting efficiency is influenced.
The technology can improve the liquid lifting capacity of a pipe column to realize liquid lifting and efficiency enhancement, but cannot remove the particle blockage of a hypotonic oil reservoir; an oil field oil-water well leakage-isolation blocking-removal production integrated pipe column ZL201320320476.4 can remove stratum blocking and improve oil well productivity, but the construction process is complex.
The application number is 201720603718.9, and the application date is 2017-05-26 discloses a rod pump efficiency improving device for a deep pumping well, which comprises a mandrel, an outer cylinder and a coupling, wherein the first end of the mandrel is connected to the coupling, the outer cylinder is slidably sleeved on the mandrel, a flow channel is formed between the mandrel and the outer cylinder, a through hole is formed in the outer cylinder, when the outer cylinder slides to a first position relative to the mandrel, the through hole is communicated with the flow channel, and when the outer cylinder slides to a second position, the through hole is disconnected from the flow channel. The pumping device of the deep pumping well sucker rod pump is beneficial to pumping of an oil pump, improves pumping efficiency, reduces pressure difference at the upper end of a plunger of the oil pump, prolongs service life, straightens a sucker rod, reduces friction between the sucker rod and an oil pipe, and prolongs the whole service life of underground oil pumping equipment. The invention also discloses oil extraction equipment applying the deep pumping well sucker-rod pump efficiency improving device.
The application number is 201320320476.4, and the application date is 2013-06-05, which belongs to the technical field of petroleum exploitation. The oil pipe is connected with the pumping assisting device, the other end of the pumping assisting device is connected with the packer, the other end of the packer is connected with the constant pressure uniflow valve, the other end of the constant pressure uniflow valve is connected with the oil pipe nipple, and the other end of the oil pipe nipple is connected with the bell mouth. After the invention is used, the three purposes of separating leakage, removing blockage and producing can be realized by one pipe column, the construction period is shortened by half compared with the prior art, the construction cost of a single well is reduced, and the invention has wide popularization value for construction of similar wells at home and abroad.
The dual-wave vibration oil extraction device comprises an outer loop, an inner loop, a primary composite spool, a high-frequency rotary vibrator, a low-frequency rotary vibrator and a screen pipe, wherein the upper end of the outer loop is connected with an oil pipe of a production tree, the inner loop is slidably arranged in the outer loop, the screen pipe is fixed at the bottom of the inner loop, the primary composite spool is arranged in inner holes of the outer loop, the inner loop and the screen pipe, the top end of the primary composite spool is fixedly connected to the oil pipe, and the high-frequency rotary vibrator and the low-frequency rotary vibrator are arranged on the part of the primary composite spool, which is positioned in the inner hole of the screen pipe. The oil-water two-phase plugging agent is installed underground, has the double wave functions of sound waves and infrasonic waves, is suitable for plugging removal of near-well zones, acts on the whole oil layer, improves rheological property of crude oil, reduces interfacial tension of oil-water two phases, and can play a role in multiple aspects of plugging removal, yield increase and prevention.
The invention relates to a novel vibration oil extraction device, which has the technical scheme that the novel vibration oil extraction device comprises a central shaft, a sleeve, a sliding block, a lifting nipple, a vibrating rod, a water passing hole and a jet hole, wherein the sleeve is fixed on the central shaft through threaded connection, the sliding block is arranged outside the central shaft and can slide up and down along the central shaft, the lifting nipple is connected with the vibrating rod and the central shaft, the water passing hole is arranged at the upper part of the central shaft, the jet hole is arranged at the lower part of the central shaft, and the novel vibration oil extraction device has the beneficial effects that the vibration oil extraction device utilizes vibration waves with different vibration parameters to treat an oil layer to cause the physical and chemical properties of the oil layer and fluid contained in the oil layer to change to a certain extent, so that the seepage condition of the fluid in the oil layer is improved, and the oil well is increased.
The hydraulic low-frequency vibration crude oil recovery device comprises a power system, wherein the power system comprises a power source for driving a rotor system to rotate, the rotor system comprises a vertical rotating pipe and a horizontal rotary table arranged at the bottom end of the vertical rotating pipe, flow channels are arranged at the bottom of the vertical rotating pipe and on the horizontal rotary table, flow of liquid media can be used in the vertical rotating pipe, a vibration system comprises a vertical separation pipe column and an annular heavy hammer arranged in the vertical separation pipe column, the annular heavy hammer can move up and down under the pressure of the liquid media, and the bottom of a stator system is provided with flow channels which can be communicated with the flow channels on the horizontal rotary table and used for discharging the liquid media. The vibration frequency of the invention can be controlled by the rotation speed of the motor, the vibration power is controlled by the pressure of the ground pumping liquid, the vibration power and the pressure are independently controlled and do not interfere with each other, and the invention can be placed in a shaft by means of the original oil pipe without cleaning a pipe column, can directly act on the stratum needing to be treated and is convenient for subsequent production.
The ultrasonic oscillator for preventing wax deposition of the oilfield oil extraction pipe comprises a tubular shell, wherein a jet flow generator is arranged in the tubular shell, the jet flow generator comprises an oil inlet section and an oil outlet section, the oil inlet section is formed by transitional connection of a first shrinkage opening and a second shrinkage opening with a filtering section, the oil outlet section extends to a stand column support, and two vibrating elastic sheets are symmetrically arranged on the stand column support, so that wax deposition of the oilfield oil extraction pipe can be effectively prevented, the continuous service time of a pipeline is prolonged, and the oilfield exploitation efficiency is improved.
The technical scheme of the above disclosed technology, the technical problems to be solved and the generated beneficial effects are different from those of the invention, and the technical documents disclosed above have no technical teaching aiming at more technical features of the invention, the technical problems to be solved and the beneficial effects.
Disclosure of Invention
The invention aims to provide a deep oil and gas reservoir grading pumping-assisting efficient lifting method and a pipe column, wherein matched vibrators are optimally applied according to reservoir characteristics, so that seepage capability of a reservoir can be improved, a rapid oil extraction effect is achieved, and distribution optimization of pumping-assisting devices is performed according to fluid characteristics. The outer diameter of the pumping aid is close to the inner diameter of the oil pipe, the two are in clearance seal, when the rod column is arranged upwards, the clearance leakage is smaller than the yielding volume of the pumping aid, and the pumping aid has different optimized intervals according to the characteristics of different fluids.
In order to achieve the purpose, the invention adopts the following technical scheme that the deep oil and gas reservoir grading pumping-assisting efficient lifting method comprises the following steps:
the method comprises the steps of firstly, collecting oil well early-stage production data, analyzing oil-water connectivity corresponding to water well data, and analyzing the thickness degree, sand content, corrosiveness, waxing property, gas content and water content of an oil reservoir;
A second step of selecting an adaptive vibrator according to the analysis result of the oil reservoir;
Thirdly, selecting an applicable oil pipe according to the fluid analysis characteristics;
a fourth step of designing the mutual distance between two or more pumping aids according to the pump depth and the fluid characteristics;
and fifthly, performing construction according to the design result, firstly, putting into a pipe column, then testing the pressure of the pipe column, after the pressure test is qualified, putting into a sucker rod to be connected with a liquid lifting pump, and testing the pressure to be qualified, and performing normal production.
Further, in the second step, the power of the vibrator is proportional to the thickness of the oil in the oil reservoir, the thick oil corresponds to the high-power vibrator, and the thin oil corresponds to the low-power vibrator.
Further, in the second step, the power of the vibrator is proportional to the sand content of the oil in the oil reservoir, the oil layer with high sand content corresponds to the high-power vibrator, and the oil layer with low sand content corresponds to the low-power vibrator.
Further, in the third step, an anti-corrosion oil pipe is applied to a corroded oil well, an anti-hydrogen sulfide oil pipe is applied to an oil well containing hydrogen sulfide, a high-heat-insulation gel lining oil pipe is applied to an oil well with more paraffin precipitation, heat loss is reduced, the temperature of fluid is kept above a paraffin precipitation point, paraffin removal cost is reduced, and suspension point load is reduced.
Further, in the fourth step, according to the gas content of the fluid, the viscosity of the crude oil and the water content, the distribution of the pumping aids is optimized, that is, the larger the gas content is, the larger the mutual distance between the pumping aids is, the smaller the mutual distance between the pumping aids is, the larger the viscosity of the crude oil is, the smaller the mutual distance between the pumping aids is, the smaller the viscosity of the crude oil is, the larger the mutual distance between the pumping aids is, the larger the water content is, the larger the mutual distance between the pumping aids is, the smaller the water content is, and the mutual distance between the pumping aids is smaller.
Further, in the fifth step, the pipe column comprises a tail pipe, a vibrator, a liquid lifting pump, a pumping aid and a liquid lifting pipe which are sequentially connected from bottom to top, and the upper end of the liquid lifting pump is connected with a sucker rod.
Further, the vibrator faces the reservoir, the matched vibrator is applied according to the quantity of oil layers of the oil well, and continuous vibration can be generated by the vibrator through stretching and retracting of the pipe column, so that the reservoir blockage is relieved.
Further, the vibrator has slots or holes for throttle, and when fluid passes through, the fluid will flow in variable speed and produce sound wave to act on oil layer to make free sand or loose sand to discharge from stratum and delay the generation of scale in blasthole.
Further, when the pumping aid moves upwards, the pumping aid can be closed under the action of pressure and friction force to lift fluid, and when the pumping aid descends, the pumping aid is opened, and the fluid can freely pass through the pumping aid.
Furthermore, the outer diameter of the pumping aid and the inner diameter of the oil pipe are in clearance seal, when the rod column is arranged upwards, the clearance leakage is smaller than the yielding volume of the pumping aid, and the pumping aid has different optimized intervals according to the characteristics of different fluids.
Further, the liquid lifting pump is an oil well pump with a slide valve and a double-layer pipe capable of hanging a long tail pipe.
In order to achieve the purpose, the invention adopts the following technical scheme that the deep hydrocarbon reservoir grading pumping-assisting efficient lifting pipe column comprises a tail pipe, a vibrator, a liquid lifting pump, a pumping assisting device and a liquid lifting pipe which are sequentially connected from bottom to top, wherein the upper end of the liquid lifting pump is connected with a sucker rod.
Further, the vibrator has slots or holes for throttle, and when fluid passes through, the fluid will flow in variable speed and produce sound wave to act on oil layer to make free sand or loose sand to discharge from stratum and delay the generation of scale in blasthole.
Further, when the pumping aid moves upwards, the pumping aid can be closed under the action of pressure and friction force to lift fluid, and when the pumping aid descends, the pumping aid is opened, and the fluid can freely pass through the pumping aid.
Further, the outer diameter of the pumping aid and the inner diameter of the oil pipe are in clearance seal, and when the rod column is upward, the clearance leakage is smaller than the yielding volume of the pumping aid.
Further, the liquid lifting pump is an oil well pump with a slide valve and a double-layer pipe capable of hanging a long tail pipe.
Compared with the prior art, the invention has the following beneficial effects:
According to the logging information of the oil well, reservoir energy and residual oil are analyzed, the characteristics of oil well fluid and well body structure are combined, a low-permeability oil reservoir long-acting liquid extraction synergistic pipe column with proper size and length is applied, namely, the deep oil and gas reservoir graded pumping assisting efficient lifting pipe column is used for discharging liquid, the tail pipe is deepened to the middle part of the oil layer, vibration is generated near the oil layer due to pipe column movement and fluid flow characteristics, free silt in the oil layer is promoted to vibrate and discharge, scale generation in a blasthole is delayed, an on-pump pumping assisting device is used for dividing pressure in an oil pipe, gas expansion is carried out, wax cores can be dispersed, wax generation is delayed, the gas content in the oil pipe is improved, and the deposition of the scale in the oil pipe is delayed through throttling vibration during pumping assisting.
The oil well reservoir physical properties are considered, a lifting pipe column is optimized, and an anti-corrosion pipe column is applied to a corrosion oil well;
The vibrator is opposite to the reservoir, the matched vibrator is applied according to the quantity of oil layers of an oil well, and the vibrator can generate continuous vibration by utilizing the expansion and contraction of a pipe column, so that the blockage of the reservoir is relieved;
The vibrator is provided with a slit or a hole capable of generating throttling, when fluid passes through the vibrator, the fluid performs variable speed flow and generates sound waves, the sound waves can act on an oil layer, free sand or loose sand is solidified, the free sand or loose sand is discharged from a stratum, and the generation of scale in a blasthole is delayed;
And (5) carrying out distribution optimization of the pumping assisting device according to the fluid characteristics. When the pumping aid moves upwards, the pumping aid can be closed under the action of pressure and friction force to lift fluid;
The outer diameter of the pumping aid is close to the inner diameter of the oil pipe, the two are in clearance seal, and when the rod column is upwards, the clearance leakage is smaller than the yielding volume of the pumping aid;
the liquid lifting pump is an oil pump with a slide valve and a double-layer pipe capable of hanging a long tail pipe.
The plunger stroke loss can be reduced when the liquid lifting pump is in the down stroke.
Drawings
FIG. 1 is a schematic diagram of a deep reservoir staged pumping-assisted high efficiency lifting string in accordance with the present invention.
In the figure, a tail pipe 1, a vibrator 2, a liquid lifting pump 3, a liquid lifting pipe 4, a pumping aid 5 and a sucker rod 6 are arranged.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
Referring to fig. 1, the invention provides a technical scheme of a deep oil and gas reservoir grading pumping-assisting efficient lifting method, which comprises the following steps:
the method comprises the steps of firstly, collecting oil well early-stage production data, analyzing oil-water connectivity corresponding to water well data, and analyzing the thickness degree, sand content, corrosiveness, waxing property, gas content and water content of an oil reservoir;
A second step of selecting an adaptive vibrator according to the analysis result of the oil reservoir;
Thirdly, selecting an applicable oil pipe according to the fluid analysis characteristics;
a fourth step of designing the mutual distance between two or more pumping aids according to the pump depth and the fluid characteristics;
and fifthly, performing construction according to the design result, firstly, putting into a pipe column, then testing the pressure of the pipe column, after the pressure test is qualified, putting into a sucker rod to be connected with a liquid lifting pump, and testing the pressure to be qualified, and performing normal production.
Further, in the second step, the power of the vibrator is proportional to the thickness of the oil in the oil reservoir, the thick oil corresponds to the high-power vibrator, and the thin oil corresponds to the low-power vibrator.
Further, in the second step, the power of the vibrator is proportional to the sand content of the oil in the oil reservoir, the oil layer with high sand content corresponds to the high-power vibrator, and the oil layer with low sand content corresponds to the low-power vibrator.
Further, in the third step, an anti-corrosion oil pipe is applied to a corroded oil well, an anti-hydrogen sulfide oil pipe is applied to an oil well containing hydrogen sulfide, a high-heat-insulation gel lining oil pipe is applied to an oil well with more paraffin precipitation, heat loss is reduced, the temperature of fluid is kept above a paraffin precipitation point, paraffin removal cost is reduced, and suspension point load is reduced, wherein the oil pipe refers to a tail pipe and a liquid lifting pipe in the invention.
Further, in the fourth step, according to the gas content of the fluid, the viscosity of the crude oil and the water content, the distribution of the pumping aids is optimized, that is, the larger the gas content is, the larger the mutual distance between the pumping aids is, the smaller the mutual distance between the pumping aids is, the larger the viscosity of the crude oil is, the smaller the mutual distance between the pumping aids is, the smaller the viscosity of the crude oil is, the larger the mutual distance between the pumping aids is, the larger the water content is, the larger the mutual distance between the pumping aids is, the smaller the water content is, and the mutual distance between the pumping aids is smaller.
Further, in the fifth step, the pipe column includes a tail pipe 1, a vibrator 2, a lifting pump 3, a pumping aid 5 and a lifting pipe 4, which are sequentially connected from bottom to top, and the upper end of the lifting pump is connected with a sucker rod 6.
Further, the vibrator faces the reservoir, the matched vibrator is applied according to the quantity of oil layers of the oil well, and continuous vibration can be generated by the vibrator through stretching and retracting of the pipe column, so that the reservoir blockage is relieved.
Further, the vibrator has slots or holes for throttle, and when fluid passes through, the fluid will flow in variable speed and produce sound wave to act on oil layer to make free sand or loose sand to discharge from stratum and delay the generation of scale in blasthole.
Further, when the pumping aid moves upwards, the pumping aid can be closed under the action of pressure and friction force to lift fluid, and when the pumping aid descends, the pumping aid is opened, and the fluid can freely pass through the pumping aid.
Furthermore, the outer diameter of the pumping aid and the inner diameter of the oil pipe are in clearance seal, when the rod column is arranged upwards, the clearance leakage is smaller than the yielding volume of the pumping aid, and the pumping aid has different optimized intervals according to the characteristics of different fluids.
Further, the liquid lifting pump is an oil well pump with a slide valve and a double-layer pipe capable of hanging a long tail pipe.
The utility model provides a deep oil gas reservoir is hierarchical helps high-efficient tubular column that lifts of taking out, includes tail pipe, vibrator, lifts liquid pump, helps take out ware, lifts the liquid pipe that connects gradually from bottom to top, lift the pump upper end and connect the sucker rod.
Further, the vibrator has slots or holes for throttle, and when fluid passes through, the fluid will flow in variable speed and produce sound wave to act on oil layer to make free sand or loose sand to discharge from stratum and delay the generation of scale in blasthole.
Further, when the pumping aid moves upwards, the pumping aid can be closed under the action of pressure and friction force to lift fluid, and when the pumping aid descends, the pumping aid is opened, and the fluid can freely pass through the pumping aid.
Further, the outer diameter of the pumping aid and the inner diameter of the oil pipe are in clearance seal, and when the rod column is upward, the clearance leakage is smaller than the yielding volume of the pumping aid.
Further, the liquid lifting pump is an oil well pump with a slide valve and a double-layer pipe capable of hanging a long tail pipe.
According to the logging information of the oil well, reservoir energy and residual oil are analyzed, the characteristics of oil well fluid and well body structure are combined, a low-permeability oil reservoir long-acting liquid extraction synergistic pipe column with proper size and length is applied, namely, the deep oil and gas reservoir graded pumping assisting efficient lifting pipe column is used for discharging liquid, the tail pipe is deepened to the middle part of the oil layer, vibration is generated near the oil layer due to pipe column movement and fluid flow characteristics, free silt in the oil layer is promoted to vibrate and discharge, scale generation in a blasthole is delayed, an on-pump pumping assisting device is used for dividing pressure in an oil pipe, gas expansion is carried out, wax cores can be dispersed, wax generation is delayed, the gas content in the oil pipe is improved, and the deposition of the scale in the oil pipe is delayed through throttling vibration during pumping assisting.
The oil well reservoir physical properties are considered, a lifting pipe column is optimized, and an anti-corrosion pipe column is applied to a corrosion oil well;
The vibrator is opposite to the reservoir, the matched vibrator is applied according to the quantity of oil layers of an oil well, and the vibrator can generate continuous vibration by utilizing the expansion and contraction of a pipe column, so that the blockage of the reservoir is relieved;
The vibrator is provided with a slit or a hole capable of generating throttling, when fluid passes through the vibrator, the fluid performs variable speed flow and generates sound waves, the sound waves can act on an oil layer, free sand or loose sand is solidified, the free sand or loose sand is discharged from a stratum, and the generation of scale in a blasthole is delayed;
And (5) carrying out distribution optimization of the pumping assisting device according to the fluid characteristics. When the pumping aid moves upwards, the pumping aid can be closed under the action of pressure and friction force to lift fluid;
The outer diameter of the pumping aid is close to the inner diameter of the oil pipe, the two are in clearance seal, and when the rod column is upwards, the clearance leakage is smaller than the yielding volume of the pumping aid;
the liquid lifting pump is an oil pump with a slide valve and a double-layer pipe capable of hanging a long tail pipe.
The plunger stroke loss can be reduced when the liquid lifting pump is in the down stroke. On the downstroke, the spool valve closes and the plunger then descends, as the fluid compressibility of the deep hypotonic well is high, when the plunger descends, the chamber pressure between the upper portion of the plunger and the spool valve decreases, and when the fluid pressure below the plunger is higher than the pressure between the plunger and the spool valve, the ball opens, but at this time, the pressure below the spool valve is much lower than the pressure above the spool valve, the buoyancy acting on the bottom of the sucker rod to which the plunger is connected is greatly reduced compared to conventional processes, and thus the downstroke stem length is greater than that of conventional processes, and downstroke, stem stroke losses are reduced. And in the upstroke, compared with the conventional process, the length of the pole is consistent with the pump diameter. Therefore, the grading pumping-assisting efficient lifting method can effectively reduce stroke loss and improve pump efficiency.
Example 2:
Referring to fig. 1, the invention provides a technical scheme of a deep oil and gas reservoir grading pumping-assisting efficient lifting method, which comprises the following steps:
the method comprises the steps of firstly, collecting oil well early-stage production data, analyzing oil-water connectivity corresponding to water well data, and analyzing the thickness degree, sand content, corrosiveness, waxing property, gas content and water content of an oil reservoir;
A second step of selecting an adaptive vibrator according to the analysis result of the oil reservoir;
Thirdly, selecting an applicable oil pipe according to the fluid analysis characteristics;
a fourth step of designing the mutual distance between two or more pumping aids according to the pump depth and the fluid characteristics;
and fifthly, performing construction according to the design result, firstly, putting into a pipe column, then testing the pressure of the pipe column, after the pressure test is qualified, putting into a sucker rod to be connected with a liquid lifting pump, and testing the pressure to be qualified, and performing normal production.
Further, in the second step, the power of the vibrator is proportional to the thickness of the oil in the oil reservoir, the thick oil corresponds to the high-power vibrator, and the thin oil corresponds to the low-power vibrator.
Further, in the second step, the power of the vibrator is proportional to the sand content of the oil in the oil reservoir, the oil layer with high sand content corresponds to the high-power vibrator, and the oil layer with low sand content corresponds to the low-power vibrator.
Further, in the third step, an anti-corrosion oil pipe is applied to a corroded oil well, an anti-hydrogen sulfide oil pipe is applied to an oil well containing hydrogen sulfide, a high-heat-insulation gel lining oil pipe is applied to an oil well with more paraffin precipitation, heat loss is reduced, the temperature of fluid is kept above a paraffin precipitation point, paraffin removal cost is reduced, and suspension point load is reduced, wherein the oil pipe refers to a tail pipe and a liquid lifting pipe in the invention.
Further, in the fourth step, according to the gas content of the fluid, the viscosity of the crude oil and the water content, the distribution of the pumping aids is optimized, that is, the larger the gas content is, the larger the mutual distance between the pumping aids is, the smaller the mutual distance between the pumping aids is, the larger the viscosity of the crude oil is, the smaller the mutual distance between the pumping aids is, the smaller the viscosity of the crude oil is, the larger the mutual distance between the pumping aids is, the larger the water content is, the larger the mutual distance between the pumping aids is, the smaller the water content is, and the mutual distance between the pumping aids is smaller.
Further, in the fifth step, the pipe column includes a tail pipe 1, a vibrator 2, a lifting pump 3, a pumping aid 5 and a lifting pipe 4, which are sequentially connected from bottom to top, and the upper end of the lifting pump is connected with a sucker rod 6.
Further, the vibrator faces the reservoir, the matched vibrator is applied according to the quantity of oil layers of the oil well, and continuous vibration can be generated by the vibrator through stretching and retracting of the pipe column, so that the reservoir blockage is relieved.
Further, the vibrator has slots or holes for throttle, and when fluid passes through, the fluid will flow in variable speed and produce sound wave to act on oil layer to make free sand or loose sand to discharge from stratum and delay the generation of scale in blasthole.
Further, when the pumping aid moves upwards, the pumping aid can be closed under the action of pressure and friction force to lift fluid, and when the pumping aid descends, the pumping aid is opened, and the fluid can freely pass through the pumping aid.
Furthermore, the outer diameter of the pumping aid and the inner diameter of the oil pipe are in clearance seal, when the rod column is arranged upwards, the clearance leakage is smaller than the yielding volume of the pumping aid, and the pumping aid has different optimized intervals according to the characteristics of different fluids.
Further, the liquid lifting pump is an oil well pump with a slide valve and a double-layer pipe capable of hanging a long tail pipe.
The utility model provides a deep oil gas reservoir is hierarchical helps high-efficient tubular column that lifts of taking out, includes tail pipe, vibrator, lifts liquid pump, helps take out ware, lifts the liquid pipe that connects gradually from bottom to top, lift the pump upper end and connect the sucker rod.
Example 3:
Referring to fig. 1, the invention provides a technical scheme of a deep oil and gas reservoir grading pumping-assisting efficient lifting method, which comprises the following steps:
the method comprises the steps of firstly, collecting oil well early-stage production data, analyzing oil-water connectivity corresponding to water well data, and analyzing the thickness degree, sand content, corrosiveness, waxing property, gas content and water content of an oil reservoir;
A second step of selecting an adaptive vibrator according to the analysis result of the oil reservoir;
Thirdly, selecting an applicable oil pipe according to the fluid analysis characteristics;
a fourth step of designing the mutual distance between two or more pumping aids according to the pump depth and the fluid characteristics;
and fifthly, performing construction according to the design result, firstly, putting into a pipe column, then testing the pressure of the pipe column, after the pressure test is qualified, putting into a sucker rod to be connected with a liquid lifting pump, and testing the pressure to be qualified, and performing normal production.
Further, in the second step, the power of the vibrator is proportional to the thickness of the oil in the oil reservoir, the thick oil corresponds to the high-power vibrator, and the thin oil corresponds to the low-power vibrator.
Further, in the second step, the power of the vibrator is proportional to the sand content of the oil in the oil reservoir, the oil layer with high sand content corresponds to the high-power vibrator, and the oil layer with low sand content corresponds to the low-power vibrator.
Further, in the third step, an anti-corrosion oil pipe is applied to a corroded oil well, an anti-hydrogen sulfide oil pipe is applied to an oil well containing hydrogen sulfide, a high-heat-insulation gel lining oil pipe is applied to an oil well with more paraffin precipitation, heat loss is reduced, the temperature of fluid is kept above a paraffin precipitation point, paraffin removal cost is reduced, and suspension point load is reduced, wherein the oil pipe refers to a tail pipe and a liquid lifting pipe in the invention.
Further, in the fourth step, according to the gas content of the fluid, the viscosity of the crude oil and the water content, the distribution of the pumping aids is optimized, that is, the larger the gas content is, the larger the mutual distance between the pumping aids is, the smaller the mutual distance between the pumping aids is, the larger the viscosity of the crude oil is, the smaller the mutual distance between the pumping aids is, the smaller the viscosity of the crude oil is, the larger the mutual distance between the pumping aids is, the larger the water content is, the larger the mutual distance between the pumping aids is, the smaller the water content is, and the mutual distance between the pumping aids is smaller.
Further, in the fifth step, the pipe column includes a tail pipe 1, a vibrator 2, a lifting pump 3, a pumping aid 5 and a lifting pipe 4, which are sequentially connected from bottom to top, and the upper end of the lifting pump is connected with a sucker rod 6.
The utility model provides a deep oil gas reservoir is hierarchical helps high-efficient tubular column that lifts of taking out, includes tail pipe, vibrator, lifts liquid pump, helps take out ware, lifts the liquid pipe that connects gradually from bottom to top, lift the pump upper end and connect the sucker rod.
Example 4:
Referring to fig. 1, the invention provides a technical scheme of a deep oil and gas reservoir grading pumping-assisting efficient lifting method, which comprises the following steps:
the method comprises the steps of firstly, collecting oil well early-stage production data, analyzing oil-water connectivity corresponding to water well data, and analyzing the thickness degree, sand content, corrosiveness, waxing property, gas content and water content of an oil reservoir;
A second step of selecting an adaptive vibrator according to the analysis result of the oil reservoir;
Thirdly, selecting an applicable oil pipe according to the fluid analysis characteristics;
a fourth step of designing the mutual distance between two or more pumping aids according to the pump depth and the fluid characteristics;
and fifthly, performing construction according to the design result, firstly, putting into a pipe column, then testing the pressure of the pipe column, after the pressure test is qualified, putting into a sucker rod to be connected with a liquid lifting pump, and testing the pressure to be qualified, and performing normal production.
Further, in the second step, the power of the vibrator is proportional to the thickness of the oil in the oil reservoir, the thick oil corresponds to the high-power vibrator, and the thin oil corresponds to the low-power vibrator. The degree of thinness refers to the viscosity.
Further, in the second step, the power of the vibrator is proportional to the sand content of the oil in the oil reservoir, the oil layer with high sand content corresponds to the high-power vibrator, and the oil layer with low sand content corresponds to the low-power vibrator.
Further, in the third step, an anti-corrosion oil pipe is applied to a corroded oil well, an anti-hydrogen sulfide oil pipe is applied to an oil well containing hydrogen sulfide, a high-heat-insulation gel lining oil pipe is applied to an oil well with more paraffin precipitation, heat loss is reduced, the temperature of fluid is kept above a paraffin precipitation point, paraffin removal cost is reduced, and suspension point load is reduced, wherein the oil pipe refers to a tail pipe and a liquid lifting pipe in the invention.
Further, in the fourth step, according to the gas content of the fluid, the viscosity of the crude oil and the water content, the distribution of the pumping aids is optimized, that is, the larger the gas content is, the larger the mutual distance between the pumping aids is, the smaller the mutual distance between the pumping aids is, the larger the viscosity of the crude oil is, the smaller the mutual distance between the pumping aids is, the smaller the viscosity of the crude oil is, the larger the mutual distance between the pumping aids is, the larger the water content is, the larger the mutual distance between the pumping aids is, the smaller the water content is, and the mutual distance between the pumping aids is smaller.
The utility model provides a deep oil gas reservoir is hierarchical helps high-efficient tubular column that lifts of taking out, includes tail pipe, vibrator, lifts liquid pump, helps take out ware, lifts the liquid pipe that connects gradually from bottom to top, lift the pump upper end and connect the sucker rod.
Example 5:
Referring to fig. 1, the invention provides a technical scheme of a deep oil and gas reservoir grading pumping-assisting efficient lifting method, which comprises the following steps:
the method comprises the steps of firstly, collecting oil well early-stage production data, analyzing oil-water connectivity corresponding to water well data, and analyzing the thickness degree, sand content, corrosiveness, waxing property, gas content and water content of an oil reservoir;
A second step of selecting an adaptive vibrator according to the analysis result of the oil reservoir;
Thirdly, selecting an applicable oil pipe according to the fluid analysis characteristics;
a fourth step of designing the mutual distance between two or more pumping aids according to the pump depth and the fluid characteristics;
and fifthly, performing construction according to the design result, firstly, putting into a pipe column, then testing the pressure of the pipe column, after the pressure test is qualified, putting into a sucker rod to be connected with a liquid lifting pump, and testing the pressure to be qualified, and performing normal production.
Further, in the second step, the power of the vibrator is proportional to the thickness of the oil in the oil reservoir, the thick oil corresponds to the high-power vibrator, and the thin oil corresponds to the low-power vibrator.
Further, in the second step, the power of the vibrator is proportional to the sand content of the oil in the oil reservoir, the oil layer with high sand content corresponds to the high-power vibrator, and the oil layer with low sand content corresponds to the low-power vibrator.
Further, in the fourth step, according to the gas content of the fluid, the viscosity of the crude oil and the water content, the distribution of the pumping aids is optimized, that is, the larger the gas content is, the larger the mutual distance between the pumping aids is, the smaller the mutual distance between the pumping aids is, the larger the viscosity of the crude oil is, the smaller the mutual distance between the pumping aids is, the smaller the viscosity of the crude oil is, the larger the mutual distance between the pumping aids is, the larger the water content is, the larger the mutual distance between the pumping aids is, the smaller the water content is, and the mutual distance between the pumping aids is smaller.
The utility model provides a deep oil gas reservoir is hierarchical helps high-efficient tubular column that lifts of taking out, includes tail pipe, vibrator, lifts liquid pump, helps take out ware, lifts the liquid pipe that connects gradually from bottom to top, lift the pump upper end and connect the sucker rod.
Example 6:
Referring to fig. 1, the invention provides a technical scheme of a deep oil and gas reservoir grading pumping-assisting efficient lifting method, which comprises the following steps:
the method comprises the steps of firstly, collecting oil well early-stage production data, analyzing oil-water connectivity corresponding to water well data, and analyzing the thickness degree, sand content, corrosiveness, waxing property, gas content and water content of an oil reservoir;
A second step of selecting an adaptive vibrator according to the analysis result of the oil reservoir;
Thirdly, selecting an applicable oil pipe according to the fluid analysis characteristics;
a fourth step of designing the mutual distance between two or more pumping aids according to the pump depth and the fluid characteristics;
and fifthly, performing construction according to the design result, firstly, putting into a pipe column, then testing the pressure of the pipe column, after the pressure test is qualified, putting into a sucker rod to be connected with a liquid lifting pump, and testing the pressure to be qualified, and performing normal production.
Further, in the second step, the power of the vibrator is proportional to the thickness of the oil in the oil reservoir, the thick oil corresponds to the high-power vibrator, and the thin oil corresponds to the low-power vibrator.
Further, in the second step, the power of the vibrator is proportional to the sand content of the oil in the oil reservoir, the oil layer with high sand content corresponds to the high-power vibrator, and the oil layer with low sand content corresponds to the low-power vibrator.
The utility model provides a deep oil gas reservoir is hierarchical helps high-efficient tubular column that lifts of taking out, includes tail pipe, vibrator, lifts liquid pump, helps take out ware, lifts the liquid pipe that connects gradually from bottom to top, lift the pump upper end and connect the sucker rod.
Example 7:
Referring to fig. 1, the invention provides a technical scheme of a deep oil and gas reservoir grading pumping-assisting efficient lifting method, which comprises the following steps:
the method comprises the steps of firstly, collecting oil well early-stage production data, analyzing oil-water connectivity corresponding to water well data, and analyzing the thickness degree, sand content, corrosiveness, waxing property, gas content and water content of an oil reservoir;
A second step of selecting an adaptive vibrator according to the analysis result of the oil reservoir;
Thirdly, selecting an applicable oil pipe according to the fluid analysis characteristics;
a fourth step of designing the mutual distance between two or more pumping aids according to the pump depth and the fluid characteristics;
and fifthly, performing construction according to the design result, firstly, putting into a pipe column, then testing the pressure of the pipe column, after the pressure test is qualified, putting into a sucker rod to be connected with a liquid lifting pump, and testing the pressure to be qualified, and performing normal production.
The utility model provides a deep oil gas reservoir is hierarchical helps high-efficient tubular column that lifts of taking out, includes tail pipe, vibrator, lifts liquid pump, helps take out ware, lifts the liquid pipe that connects gradually from bottom to top, lift the pump upper end and connect the sucker rod.
All the above components, which are not described in the expansion, are known in the art, such as vibrators, liquid lifting pumps and pumping aids, and can be directly manufactured or connected after purchase.
In the present invention, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, as they are used in a fixed or removable connection, or as they are integral with one another, as they are directly or indirectly connected through intervening media. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The deep oil and gas reservoir grading pumping-assisting efficient lifting method is characterized by comprising the following steps of:
the method comprises the steps of firstly, collecting oil well early-stage production data, analyzing oil-water connectivity corresponding to water well data, and analyzing the thickness degree, sand content, corrosiveness, waxing property, gas content and water content of an oil reservoir;
A second step of selecting an adaptive vibrator according to the analysis result of the oil reservoir;
Thirdly, selecting an applicable oil pipe according to the fluid analysis characteristics;
a fourth step of designing the mutual distance between two or more pumping aids according to the pump depth and the fluid characteristics;
fifthly, performing construction according to a design result, firstly, putting into a pipe column, then testing the pressure of the pipe column, after the pressure test is qualified, putting into a sucker rod to be connected with a liquid lifting pump, and testing to pull out a pressed lattice for normal production;
in the fifth step, the pipe column comprises a tail pipe, a vibrator, a liquid lifting pump, a pumping aid and a liquid lifting pipe which are sequentially connected from bottom to top, and the upper end of the liquid lifting pump is connected with a sucker rod;
the vibrator faces the reservoir, a matched vibrator is applied according to the quantity of oil layers of the oil well, and the vibrator can generate continuous vibration by utilizing the expansion and contraction of the pipe column, so that the reservoir blockage is relieved;
the vibrator is provided with a slit or a hole capable of generating throttling, when fluid passes through the vibrator, the fluid performs variable speed flow, and generates sound waves which act on an oil layer to enable free sand or loose sand to be solidified, discharge stratum and delay the generation of scale in a blasthole;
In the fourth step, according to the gas content of the fluid, the viscosity of crude oil and the water content, the distribution optimization of pumping aids is carried out, namely, the larger the gas content is, the larger the mutual distance between the pumping aids is, the smaller the mutual distance between the pumping aids is, the larger the crude oil viscosity is, the smaller the mutual distance between the pumping aids is, the larger the water content is, the larger the mutual distance between the pumping aids is, the smaller the water content is, and the mutual distance between the pumping aids is smaller;
the power of the vibrator is in direct proportion to the thickness of the oil in the oil storage layer, the thick oil corresponds to the high-power vibrator, and the thin oil corresponds to the low-power vibrator;
The power of the vibrator is in direct proportion to the sand content of oil in the oil reservoir, an oil layer with high sand content corresponds to the high-power vibrator, and an oil layer with low sand content corresponds to the low-power vibrator.
2. The method for effectively lifting the deep oil and gas reservoir by grading pumping aid according to claim 1 is characterized in that in the third step, an anti-corrosion oil pipe is applied to a corroded oil well, an anti-hydrogen sulfide oil pipe is applied to an oil well containing hydrogen sulfide, a high-heat-preservation gel lining oil pipe is applied to an oil well with more paraffin precipitation, heat loss is reduced, the fluid temperature is kept above a paraffin precipitation point, paraffin removal cost is reduced, and suspension point load is reduced.
3. The method for effectively lifting the deep oil and gas reservoir by grading pumping aid is characterized in that when the pumping aid moves upwards on a pole, the pumping aid can be closed under the action of pressure and friction force to lift fluid, and when the pumping aid descends, the pumping aid is opened, and the fluid can freely pass through the pumping aid.
4. The method for effectively lifting the deep oil and gas reservoir by grading pumping aid is characterized in that the outer diameter of the pumping aid and the inner diameter of the oil pipe are in clearance seal, when a pole is upward, the clearance leakage is smaller than the let-out volume of the pumping aid, and the pumping aid has different optimized intervals according to the characteristics of different fluids.
5. The method for efficient pumping-assisting and lifting of a deep-layer oil and gas reservoir in a grading manner according to claim 1, wherein the liquid lifting pump is an oil well pump with a slide valve and a double-layer pipe capable of hanging a long tail pipe.
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