CN117432375A - Screen pipe well completion horizontal well output profile monitoring physical simulation experiment device based on DAS - Google Patents
Screen pipe well completion horizontal well output profile monitoring physical simulation experiment device based on DAS Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 65
- 238000004088 simulation Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000012530 fluid Substances 0.000 claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 claims abstract description 30
- 238000012856 packing Methods 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 13
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- 238000003745 diagnosis Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 57
- 238000007789 sealing Methods 0.000 claims description 52
- 238000003860 storage Methods 0.000 claims description 35
- 239000004576 sand Substances 0.000 claims description 33
- 239000000835 fiber Substances 0.000 claims description 19
- 239000013307 optical fiber Substances 0.000 claims description 18
- 239000010779 crude oil Substances 0.000 claims description 11
- 238000002474 experimental method Methods 0.000 claims description 10
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- 239000000919 ceramic Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000001802 infusion Methods 0.000 claims description 3
- 230000005514 two-phase flow Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
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- 230000035515 penetration Effects 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
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- 238000005457 optimization Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 11
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/04—Gravelling of 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
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
- E21B43/106—Couplings or joints therefor
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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
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
- E21B43/108—Expandable screens or perforated liners
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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
- E21B47/00—Survey of 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
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
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Abstract
The invention relates to a screen pipe well completion horizontal well output profile monitoring physical simulation experiment device based on DAS, and belongs to the technical field of oil gas exploitation. Including acoustic monitoring systems, horizontal wellbores, fluid injection systems, gravel packing systems, and oil water separation systems. The gravel packing system is connected with the horizontal shaft, and the acoustic wave monitoring system, the horizontal shaft, the injection system and the oil-water separation system are sequentially connected. The method is used for simulating the acoustic wave profile and the output profile of the shaft during single-phase and multiphase flow production of the screen pipe well completion horizontal well under different reservoir temperature and pressure conditions, and a comprehensive diagnosis chart of the output profile based on acoustic wave data is established through a screen pipe well completion horizontal well output profile monitoring physical simulation experiment based on DAS, so that the explanation of the horizontal well output profile through the acoustic wave profile logging data of the horizontal well is realized, and a technical thought is provided for on-site horizontal well production optimization.
Description
Technical Field
The invention belongs to the technical field of oil and gas exploitation, and particularly relates to a screen pipe well completion horizontal well output profile monitoring physical simulation experiment device based on DAS.
Background
The well completion mode refers to a specific communication mode between an oil and gas well shaft and a production destination layer, and well body structures, wellhead devices and technical measures adopted for realizing a certain communication mode. Screen well completion is currently one of the most widely used well completion modes for oil and gas well horizontal wells. Part of oil layers of the oil fields are shallow in burial, loose and easy to produce sand in the production process, and various sand prevention completion modes, namely an open hole high-quality screen pipe, an open hole gravel packing, an in-pipe gravel packing and the like are often adopted in the development process of the oil and gas well for sand prevention. With the progress of the era and the development of economy, through carrying out in-depth analysis and research on optimization of a horizontal well screen well completion mode, the advantages of an open hole high-quality screen sand control well completion mode and an open hole gravel packing sand control well completion mode are found that the open hole high-quality screen sand control well completion mode and the open hole gravel packing sand control well completion mode can enable an oil well to obtain larger shaft radius and penetration area, production pressure difference is reduced, and the uniformity of liquid outlet of a horizontal well section is ensured, so that the development time of the horizontal well is shortened, but the disadvantages are that the well is stable before water breakthrough and blockage easily occurs after water breakthrough, so that productivity is reduced. The method for explaining the screen pipe well completion horizontal well output profile based on the oil and gas well dynamic monitoring data is an important method for solving the problems of deepening geological awareness, reducing the development difficulty of the oil and gas well, optimizing the development scheme and improving the single well output, and plays a role in reducing the cost and enhancing the efficiency of oil and gas field development.
The screen pipe well completion horizontal well mainly uses multiphase flow, has complex flow pattern and flow state, is greatly influenced by well diameter and well inclination, and brings certain difficulty to the dynamic monitoring data and the interpretation of the production profile of the screen pipe well completion horizontal well. With the development of the application of the distributed optical fiber monitoring technology in the petroleum industry, the application of the distributed optical fiber monitoring technology in the petroleum industry in various aspects including measuring the acoustic wave/temperature profile, identifying the production fluid, judging the position of the discharged liquid and the discharged gas, monitoring the working state of a gas lift valve, judging the position of a crack and the like can be realized. The mature distributed optical fiber monitoring technology mainly comprises a distributed optical fiber temperature monitoring technology (DTS) and a distributed optical fiber acoustic wave monitoring technology (DAS), and fluid output conditions are inverted by the distributed optical fiber temperature monitoring technology (DTS) at home and abroad. However, the monitoring technology still has the defects of multiple solutions of data interpretation caused by fewer test parameters, more factors affecting the temperature of a well bore and the like. Therefore, a distributed fiber acoustic monitoring (DAS) technology needs to be studied in depth, so that a mature DAS data quantitative interpretation theoretical model and method are formed, and inversion of fluid output conditions by using the distributed fiber acoustic monitoring (DAS) technology is realized.
At present, theoretical research and physical simulation of a screen pipe well completion horizontal well production profile interpretation technology based on acoustic wave monitoring are not related at home and abroad. Therefore, a set of screen pipe well completion horizontal well output profile monitoring physical simulation experiment device based on DAS is established for researching the response relation between the screen pipe well completion horizontal well acoustic profile and the liquid production amount, and the horizontal well acoustic profile logging data are used for explaining the horizontal well output profile, so that a horizontal well development and development scheme is optimized, and the horizontal well development economic benefit is improved.
Disclosure of Invention
The invention aims to provide a screen pipe well completion horizontal well output profile monitoring physical simulation experiment device based on DAS, and a horizontal well output profile comprehensive diagnosis chart based on sound wave data is established through experiments so as to make up for the defects of the conventional horizontal well screen pipe well completion output profile interpretation technology.
To achieve the above objective, according to the present disclosure, a physical simulation experiment device for monitoring a production profile of a horizontal well of a screen well completion based on DAS is provided, which comprises an acoustic wave monitoring system, a horizontal well bore, a fluid injection system, a gravel packing system and an oil-water separation system, wherein the gravel packing system is connected with the horizontal well bore, and the acoustic wave monitoring system, the horizontal well bore, the fluid injection system and the oil-water separation system are sequentially connected. The acoustic wave monitoring system comprises an optical pulse transmitter, a signal receiving terminal and an armored optical fiber. The horizontal well bore is composed of a screen pipe, a sleeve pipe and a sealing joint, wherein a plurality of vertical holes communicated with the well bore are uniformly formed in the sleeve pipe, the screen pipe is assembled in the sleeve pipe, and an annular space for filling gravel is reserved between the screen pipe and the sleeve pipe. The fluid injection system consists of 2 constant-speed constant-pressure pumps, 2 liquid storage tanks and a transfusion pipeline, and after the fluid is pressurized by the constant-speed constant-pressure pumps and enters the transfusion pipeline for full mixing, the fluid flows into the screen pipe from the vertical holes of the horizontal shaft and passes through the gravels. The gravel packing system packs gravel through a sand wash line into the annular space between the inner casing of the horizontal well bore and the screen. The oil-water separation system consists of a liquid storage tank and an oil-water separator.
The sound wave monitoring system is a distributed optical fiber sound wave monitoring DAS system, wherein the optical fiber is a multi-fiber-core armored optical fiber, and a double-head installation mode is adopted. The armored optical fiber penetrates through the horizontal shaft, and runs from the heel end of the shaft to the toe end of the shaft through the inner part of the sieve tube and extends for a certain length.
The horizontal shaft comprises a sieve tube, a sleeve, a heel end sealing joint, a toe end sealing joint and a sieve tube sealing joint, the length of the sieve tube is smaller than that of the sleeve, the outer diameter of the sieve tube is smaller than the inner diameter of the sleeve and is arranged inside the sleeve, one end of the sieve tube is fixed at the heel end sealing joint, the other end of the sieve tube is arranged in the sleeve and is provided with the sieve tube sealing joint, a centralizer is arranged at the position, close to the sieve tube sealing joint, 2/3 of the sieve tube, outside the sieve tube, two ends of the sleeve are respectively fixed at the heel end sealing joint and the toe end sealing joint, and a plurality of vertical holes communicated with the shaft are uniformly distributed on the sleeve. An annular space exists between the screen pipe and the casing.
The screen pipe is an advanced high-quality screen pipe, and comprises a slotted screen pipe, a wire winding screen pipe, a precise microporous screen cloth screen pipe, a precise microporous composite sand control screen pipe, a reinforced self-cleaning sand control screen pipe, a trapezoid broad-spectrum multilayer variable-precision sand control screen pipe, a spiral stainless steel screen pipe, a star-shaped hole metal fiber sand control screen pipe, a sintered ceramic sand control screen pipe, a metal felt sand control screen pipe, an epoxy resin sand control pipe and a ceramic sand control pipe which are of the same size according to the grain size of simulated filling stratum gravel, the sorting property of stratum sand, the sand control layer structure of the screen pipe and produced fluid. An armored fiber crossing port is formed in the center of the screen pipe sealing joint and used for enabling armored fibers to pass through, and the screen pipe sealing joint is used for sealing the tail end of the screen pipe and preventing gravel and fluid from axially entering the screen pipe.
The heel end sealing joint is integrally of a cylindrical structure, an armored fiber passing through opening is formed in the center of the heel end sealing joint, and the armored fiber passes through the armored fiber passing through opening and is distributed in the inner space of the sieve tube. The periphery of the armored optical fiber crossing port is uniformly provided with 4 fluid discharge ports which are communicated with the infusion pipeline. A gravel outlet is arranged above the fluid outlet and is used for discharging and replacing gravel filled in the horizontal shaft.
The toe end sealing joint is integrally of a cylindrical structure, an armored fiber passing through port is formed in the center of the toe end sealing joint, and the armored fiber passes through the heel end sealing joint and then passes out of the toe end sealing joint after passing through the horizontal shaft. The upper part of the toe end sealing joint is provided with a gravel inflow port through which gravel is injected into the horizontal shaft, so that filling is completed.
The heel end and toe end sealing joints, the sieve tube sealing joints, the crossing ports, the inflow ports and the discharge ports which are arranged on the horizontal shaft are all formed by ellipsoidal high-temperature-resistant and high-pressure-resistant caps and sealing screws, and the whole device is high-temperature-resistant and high-pressure-resistant.
The liquid storage tank is a large square tank made of temperature-resistant glass, and is connected with the constant-speed constant-pressure pump and the oil-water separator through a liquid inlet pipeline and a liquid outlet pipeline respectively, so that the working liquid can be recycled, and the working liquid adopted in the simulation experiment is clear water, crude oil or a mixture of the clear water and the crude oil.
The DAS-based screen pipe well completion horizontal well output profile monitoring physical simulation experiment device is characterized by comprising the following specific use steps:
and S1, installing a screen pipe well completion horizontal well output profile monitoring physical simulation experiment device based on DAS, connecting a gravel inflow port with a sand washing pipeline, filling gravel meeting experiment requirements into a well shaft, and replacing the gravel filling pipeline with a sealing screw with a gasket after the annular space of the horizontal well shaft is filled with the gravel. Adding a proper amount of working solution into the liquid storage tank, and then placing the tail end of the outlet of the liquid outlet pipeline and the inlet end of the liquid inlet pipeline below the liquid level of the working solution in the liquid storage tank;
s2, opening the liquid storage tank to heat and setting the constant temperature of the liquid storage tank to be T 1 Until the end of this set of experiments;
s3, starting the constant-speed constant-pressure pump and setting the initial flow rate to q 1 ；
S4, opening the acoustic wave monitoring system, and recording acoustic wave data lambda of the screen pipe completion interval after the thermometer, the flowmeter reading and the acoustic wave profile data displayed by the acoustic wave monitoring system are stable 11 ；
S5, changing the flow rate of the constant-speed constant-pressure pump to q 2 ；
S6, after the acoustic profile data displayed by the thermometer, the flowmeter reading and the acoustic monitoring system are stable, recording acoustic data lambda at the well completion section of the screen pipe 12 ；
S7, repeating the steps S4 to S6, and recording the flow rate as q 1 ～q n Acoustic data lambda corresponding to screen pipe completion 11 ～λ 1n Finishing the test of the acoustic profile data of the horizontal well simulating different yields;
s8, closing the constant-speed constant-pressure pump, stopping heating the liquid storage tank, opening a gravel outlet of the heel end sealing device, discharging all the gravels in the annular space of the horizontal shaft, replacing different gravels and different types of sieve tubes, and repeating the steps S1-S7 to finish the test of the acoustic profile data of the horizontal shaft for simulating different sieve tube types and yields;
s9, processing the data acquired in the step S8, and drawing comprehensive diagnosis plates of the horizontal well production profile based on acoustic wave data in different screen pipe well completion modes to realize interpretation of the screen pipe well completion horizontal well production profile through the acoustic wave profile logging data of the horizontal well;
and S10, changing the water content of the working fluid, repeating the steps S1 to S9, and establishing a comprehensive diagnosis chart of the horizontal well production profile based on acoustic wave data so as to realize the explanation of the water content change of the screen well completion horizontal well through the acoustic wave profile logging data of the horizontal well.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.
In the drawings:
FIG. 1 is a physical simulation experiment device for monitoring the production profile of a screen well completion horizontal well based on DAS in the invention.
Fig. 2 is a line frame, top, left and right view of a horizontal wellbore module of the present invention.
FIG. 3 is a schematic vertical section and a schematic horizontal section of a horizontal wellbore module of the present invention.
FIG. 4 is a schematic diagram of a comprehensive diagnostic chart of a horizontal well production profile based on acoustic data in the present invention.
In fig. 1:
1-an acoustic wave monitoring system, 101-a laser transmitter, 102-an acoustic wave signal receiving terminal and 103-an armored optical fiber;
2-horizontal shaft, 201-sleeve, 202-screen, 203-experimental gravel, 204-heel end seal joint, 205-toe end seal joint, 206-screen seal joint, 207-gravel outlet, 208-fluid outlet, 209-gravel inlet port, 210-horizontal shaft vertical hole;
3-an oil-water separation system, 301-an oil-water separator and 302-a liquid storage tank;
4-fluid injection system, 401-constant speed constant pressure pump, 402-liquid storage tank, 403-infusion line, 404-pressure gauge, 405-flow meter, 406-flow control valve;
5-gravel packing system, 501-gravel packing pump set, 502-gravel storage pond;
in fig. 3:
O 1 circle center and O of cross section of heel end sealing joint 2 -center of cross section of liquid discharge outlet, O 3 -centre of cross section of gravel outlet port;
D 1 -fluid discharge port cross-sectional outer diameter, D 2 -gravel exit port cross-section straight outer diameter;
Ds 1 screen section inside diameter, ds 2 Screen section outside diameter Dt 1 -a casing inner diameter;
and meets the following relation:
①②/>and->
Detailed Description
Example 1
Screen pipe well completion horizontal well output profile monitoring physical simulation experiment device based on DAS (data acquisition) and used for exploring different viscosities (eta) of screen pipe well completion horizontal well fluids 1 、η 2 、η 3 ) Influence law on two-phase flow acoustic profile:
(the median particle size is selected here as D 50 The gravel has good roundness and sphericity, the solubility in standard earth acid is less than 1 percent, the turbidity of the gravel sample after being stirred in water is not more than 50 degrees, and the requirement of an anti-crushing test is met; selecting a wire-wrapped screen pipe to complete a well; the method of the simulation experiment device according to the present invention and the implementation procedure thereof will be described in detail
S1, installing screen pipe well completion horizontal well output profile monitoring physical model based on DASAnd the gravel inflow port of the device is connected with a sand washing pipeline, gravel meeting the experiment requirement is filled in the well shaft, and after the annular space of the horizontal well shaft is filled with the gravel, the gravel filling pipeline is replaced by a sealing screw with a gasket. The fluid injection system is modified, according to the experimental requirement, only 1 constant-pressure constant-speed pump and 1 liquid storage tank are needed, and the viscosity eta is added into the liquid storage tank 1 The crude oil is placed below the liquid level of the crude oil in the liquid storage tank at the outlet end of the liquid outlet pipeline and the inlet end of the liquid inlet pipeline;
s2, opening the liquid storage tank to heat and setting the constant temperature of the liquid storage tank to be T 1 The constant speed constant pressure pump was turned on and the flow rate was set to q 1 Until the end of this set of experiments;
s3, opening the acoustic wave monitoring system, and recording acoustic wave data lambda of the screen pipe completion interval after the thermometer, the flowmeter reading and the acoustic wave profile data displayed by the acoustic wave monitoring system are stable η1 ；
S4, replacing the viscosity eta of the crude oil in the liquid storage tank 2 The liquid storage tank and the constant-speed constant-pressure pump are T 1 And q 1 ；
S5, after the acoustic profile data displayed by the thermometer, the flowmeter reading and the acoustic monitoring system are stable, recording acoustic data lambda of a screen pipe completion interval η2 ；
S6, replacing the viscosity eta of the crude oil in the liquid storage tank 3 The liquid storage tank and the constant-speed constant-pressure pump are T 1 And q 1 ；
S7, after the acoustic profile data displayed by the thermometer, the flowmeter reading and the acoustic monitoring system are stable, recording acoustic data lambda of a screen pipe completion interval η3 ；
S8, closing the constant-speed constant-pressure pump, stopping heating the liquid storage tank, opening a gravel outlet of the heel end sealing device, discharging all the gravel in the annular space of the horizontal shaft, and recovering experimental crude oil;
and S9, analyzing the data acquired in the steps S3, S5 and S7, exploring the influence rule of the viscosity change of the screen pipe well completion horizontal well fluid on the acoustic profile, and drawing comprehensive diagnosis plates of the horizontal well production profile based on acoustic data in different screen pipe well completion modes to realize the interpretation of the screen pipe well completion horizontal well production profile through the acoustic profile logging data of the horizontal well.
Example 2
Screen pipe well completion horizontal well output profile monitoring physical simulation experiment device based on DAS (data acquisition) and used for exploring different water contents (f w1 、f w2 、f w3 ) Influence law on two-phase flow acoustic profile:
and S1, installing a screen pipe well completion horizontal well output profile monitoring physical simulation experiment device based on DAS, connecting a gravel inflow port with a sand washing pipeline, filling gravel meeting experiment requirements into a well shaft, and replacing the gravel filling pipeline with a packing screw after the annular space of the horizontal well shaft is filled with the gravel. Adding a proper amount of working solution into a liquid storage tank (adding a proper amount of purified water into a water storage tank and adding a proper amount of crude oil into a transfusion tank), and then placing the tail end of an outlet of a liquid outlet pipeline and the inlet end of a liquid inlet pipeline below the liquid level of the working solution in the liquid storage tank;
s2, opening the liquid storage tank to heat and setting the constant temperature of the liquid storage tank to be T 1 Until the experiment of the group is finished;
s3, setting the constant flow rate of the water injection constant-speed constant-pressure pump flow control valve as f w1 ×q 1 Setting the constant flow rate of the oiling constant-speed constant-pressure pump flow control valve as (1-f w1 )×q 1 Attention was paid to observing the flowmeter to ensure that the total injected flow was q 1 ；
S4, opening the acoustic wave monitoring system, and recording acoustic wave data lambda of the screen pipe completion interval after the thermometer, the flowmeter reading and the acoustic wave profile data displayed by the acoustic wave monitoring system are stable fw1 ；
S5, setting the constant flow rate of the water injection constant-speed constant-pressure pump flow control valve as f w2 ×q 1 Setting the constant flow rate of the oiling constant-speed constant-pressure pump flow control valve as (1-f w2 )×q 1 Attention was paid to observing the flowmeter to ensure that the total injected flow was q 1 ；
S6, after the acoustic profile data displayed by the thermometer, the flowmeter reading and the acoustic monitoring system are stable, recording acoustic data lambda at the well completion section of the screen pipe fw2 ；
S7, setting a water injection constant-speed constant-pressure pumpThe constant flow rate of the flow control valve is f w3 ×q 1 Setting the constant flow rate of the oiling constant-speed constant-pressure pump flow control valve as (1-f w3 )×q 1 Attention was paid to observing the flowmeter to ensure that the total injected flow was q 1 ；
S8, after the acoustic profile data displayed by the thermometer, the flowmeter reading and the acoustic monitoring system are stable, recording acoustic data lambda at the well completion section of the screen pipe fw3 ；
S9, closing the constant-speed constant-pressure pump, stopping heating the liquid storage tank, opening a gravel outlet of the heel end sealing device, discharging all the gravel in the annular space of the horizontal shaft, and recovering experimental crude oil;
and S10, analyzing the data acquired in the step S4, the step S6 and the step S8, exploring the change of the water content of the screen pipe well completion horizontal well fluid, and drawing a production profile interpretation chart of the screen pipe well completion horizontal well fluid based on the change of the water content so as to figure out the influence rule of the change of the water content on the acoustic profile. The method comprises the steps of exploring the influence rule of the change of the water content of the fluid of the screen pipe well completion horizontal well on the acoustic profile, drawing a comprehensive diagnosis chart of the single production profile of the horizontal well based on acoustic data under different screen pipe well completion modes, and realizing the interpretation of the production profile of the screen pipe well completion horizontal well through acoustic profile logging data of the horizontal well.
The foregoing description of the exemplary embodiments of the invention is not intended to limit the scope of the invention, but any equivalent changes and modifications, including acoustic wave profiles, materials and implementation steps, which would be apparent to one skilled in the art without departing from the spirit and principles of the invention, shall fall within the scope of the invention.
Claims (9)
1. The invention relates to a screen pipe well completion horizontal well output profile monitoring physical simulation experiment device based on DAS, which comprises an acoustic wave monitoring system, a horizontal well bore, a fluid injection system, a gravel packing system and an oil-water separation system, wherein the gravel packing system is connected with the horizontal well bore, the acoustic wave monitoring system, the horizontal well bore, the fluid injection system and the oil-water separation system are sequentially connected, the acoustic wave monitoring system comprises an optical pulse emitter, a signal receiving terminal and an armored optical fiber, the horizontal well bore is composed of a screen pipe, a sleeve pipe and a sealing joint, a plurality of vertical holes communicated with the well bore are uniformly formed in the sleeve pipe, the screen pipe is assembled in the sleeve pipe, an annular space for packing gravel is formed between the screen pipe and the sleeve pipe, the fluid injection system is composed of 2 constant-speed constant-pressure pumps, 2 liquid storage tanks and a liquid conveying pipeline, after fluid is pressurized by the constant-speed constant-pressure pumps and enters the liquid conveying pipeline and is fully mixed, flows into the screen pipe from the vertical holes of the horizontal well bore and flows into the gravel, the gravel packing system fills gravel into the annular space between the sleeve pipe and the sleeve pipe through the sand flushing pipeline, and the oil-water separation system is composed of a liquid storage tank and an oil-water separator.
2. The DAS-based screen well completion horizontal well production profile monitoring physical simulation experiment device according to claim 1, wherein the acoustic wave monitoring system is a distributed optical fiber acoustic wave monitoring DAS system, wherein the optical fiber is a multi-core armored optical fiber, and the armored optical fiber penetrates through the horizontal well bore in a double-head installation mode, and runs from the heel end of the well bore to the toe end of the well bore through the inner part of the screen and extends for a certain length.
3. The DAS-based screen well completion horizontal well production profile monitoring physical simulation experiment device according to claim 1, wherein the horizontal shaft comprises a screen pipe, a sleeve pipe, a heel end sealing joint, a toe end sealing joint and a screen pipe sealing joint, the screen pipe is smaller than the sleeve pipe in length, the outer diameter of the screen pipe is smaller than the inner diameter of the sleeve pipe and is arranged inside the sleeve pipe, one end of the screen pipe is fixed at the heel end sealing joint, the other end of the screen pipe is arranged inside the sleeve pipe and is provided with the screen pipe sealing joint, a centralizer is arranged at the position, close to the screen pipe sealing joint, 2/3 of the position outside the screen pipe, of the two ends of the sleeve pipe are respectively fixed at the heel end sealing joint and the toe end sealing joint, a plurality of vertical holes communicated with the shaft are uniformly formed in the sleeve pipe, and annular spaces exist between the screen pipe and the sleeve pipe.
4. The DAS-based screen well completion horizontal well production profile monitoring physical simulation experiment device according to claim 1, wherein the screen is an advanced high-quality screen, according to the grain size of simulated filling stratum gravels, the sorting property of stratum sand, the sand control layer structure of the screen and produced fluid, the screen specifically comprises a slotting screen, a wire-wrapped screen, a precise micropore mesh screen, a precise micropore composite sand control screen, a reinforced self-cleaning sand control screen, a trapezoid broad-spectrum multilayer variable-precision sand control screen, a spiral stainless steel screen, a star-hole metal fiber sand control screen, a sintered ceramic sand control screen, a metal felt sand control screen, an epoxy resin sand screen and a ceramic sand screen, wherein an armored fiber crossing port is formed in the center of a screen sealing joint for armored fiber penetration, and the sealing joint is used for sealing the screen end to prevent gravels and fluid from axially entering the screen.
5. The DAS-based screen pipe completion horizontal well output profile monitoring physical simulation experiment device according to claim 1, wherein the whole heel end sealing joint is of a cylindrical structure, an armored fiber passing through port is formed in the center of the heel end sealing joint, the armored fiber passes through the armored fiber passing through port and is distributed in the inner space of the screen pipe, 4 fluid discharge ports are uniformly formed around the armored fiber passing through port and are communicated with an infusion pipeline, and a gravel discharge port is formed above the fluid discharge ports and is used for discharging and replacing gravel filled in a horizontal shaft.
6. The DAS-based screen pipe completion horizontal well production profile monitoring physical simulation experiment device according to claim 1, wherein the whole toe end sealing joint is of a cylindrical structure, an armored fiber passing through port is formed in the center of the toe end sealing joint, the armored fiber passes through the heel end sealing joint and passes out of the toe end sealing joint after passing through a horizontal shaft, a gravel inflow port is formed in the upper portion of the toe end sealing joint, and gravel is injected into the horizontal shaft through the gravel inflow port, so that filling is completed.
7. The DAS-based screen well completion horizontal well production profile monitoring physical simulation experiment device according to claim 1, wherein the heel end and toe end sealing joints, the screen sealing joints, the crossing ports formed in a shaft, the inflow port and the discharge port are all formed by adopting ellipsoidal high-temperature-resistant high-pressure-resistant caps and sealing screws, and the device is wholly high-temperature-resistant and high-pressure-resistant.
8. The DAS-based screen pipe completion horizontal well production profile monitoring physical simulation experiment device according to claim 1, wherein the liquid storage tank is a large square tank made of temperature-resistant glass, and is respectively connected with the constant-speed constant-pressure pump and the oil-water separator through a liquid inlet pipeline and a liquid outlet pipeline, so that the working fluid can be recycled, and the working fluid adopted in the simulation experiment is clean water, crude oil or a mixture of clean water and crude oil.
9. The DAS-based screen well completion horizontal well production profile monitoring physical simulation experiment device of claim 1, wherein the specific experiment steps comprise:
s1, installing a screen pipe well completion horizontal well output profile monitoring physical simulation experiment device based on DAS, connecting a gravel inflow port with a sand flushing pipeline, filling gravel meeting experiment requirements into a shaft, replacing the gravel filling pipeline with a sealing screw with a gasket after the annular space of the horizontal shaft is filled with the gravel, adding a proper amount of working solution into a liquid storage tank, and then placing the outlet end of a liquid outlet pipeline and the inlet end of a liquid inlet pipeline below the liquid level of the working solution of the liquid storage tank;
s2, opening the liquid storage tank to heat and setting the constant temperature of the liquid storage tank to be T 1 Until the end of this set of experiments;
s3, starting the constant-speed constant-pressure pump and setting the initial flow rate to q 1 ；
S4, opening the acoustic wave monitoring system, and recording acoustic wave data lambda of the screen pipe completion interval after the thermometer, the flowmeter reading and the acoustic wave profile data displayed by the acoustic wave monitoring system are stable 11 ；
S5, changing the flow rate of the constant-speed constant-pressure pump to q 2 ；
S6, waiting for the sound displayed by the thermometer, the flowmeter reading and the sound wave monitoring systemAfter the wave profile data is stable, recording acoustic wave data lambda at the well completion section of the screen pipe 12 ；
S7, repeating the steps S4 to S6, and recording the flow rate as q 1 ～q n Acoustic data lambda corresponding to screen pipe completion 11 ～λ 1n Finishing the test of the acoustic profile data of the horizontal well simulating different yields;
s8, closing the constant-speed constant-pressure pump, stopping heating the liquid storage tank, opening a gravel outlet of the heel end sealing device, discharging all the gravels in the annular space of the horizontal shaft, replacing different gravels and different types of sieve tubes, and repeating the steps S1-S7 to finish the test of the acoustic profile data of the horizontal shaft for simulating different sieve tube types and yields;
s9, processing the data acquired in the step S8, and drawing comprehensive diagnosis plates of the horizontal well production profile based on acoustic wave data in different screen pipe well completion modes to realize interpretation of the screen pipe well completion horizontal well production profile through the acoustic wave profile logging data of the horizontal well;
and S10, changing the water content of the working fluid, repeating the steps S1 to S9, and establishing a comprehensive diagnosis chart of the two-phase flow production profile of the horizontal well based on acoustic wave data so as to realize the explanation of the water content change of the screen pipe completion horizontal well through acoustic wave profile logging data of the horizontal well.
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| CN103032065A (en) * | 2011-09-30 | 2013-04-10 | 中国石油化工股份有限公司 | Simulation test device and test method for well completion of horizontal well |
| CN107795303A (en) * | 2017-11-30 | 2018-03-13 | 青岛海洋地质研究所 | Hydrate recovery well cased hole gravel packing analogue system and method |
| CN111411934A (en) * | 2020-03-29 | 2020-07-14 | 中国石油大学(华东) | Horizontal well sand-water cooperative output and control and exploitation well completion multifunctional experimental system and experimental method thereof |
| CN117027782A (en) * | 2023-09-04 | 2023-11-10 | 西南石油大学 | Horizontal well injection and production acoustic wave profile physical simulation experiment device and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032065A (en) * | 2011-09-30 | 2013-04-10 | 中国石油化工股份有限公司 | Simulation test device and test method for well completion of horizontal well |
| CN107795303A (en) * | 2017-11-30 | 2018-03-13 | 青岛海洋地质研究所 | Hydrate recovery well cased hole gravel packing analogue system and method |
| CN111411934A (en) * | 2020-03-29 | 2020-07-14 | 中国石油大学(华东) | Horizontal well sand-water cooperative output and control and exploitation well completion multifunctional experimental system and experimental method thereof |
| CN117027782A (en) * | 2023-09-04 | 2023-11-10 | 西南石油大学 | Horizontal well injection and production acoustic wave profile physical simulation experiment device and method thereof |
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