CN110671087B - Multi-scale crack two-phase flow simulation evaluating device - Google Patents
Multi-scale crack two-phase flow simulation evaluating device Download PDFInfo
- Publication number
- CN110671087B CN110671087B CN201911013869.9A CN201911013869A CN110671087B CN 110671087 B CN110671087 B CN 110671087B CN 201911013869 A CN201911013869 A CN 201911013869A CN 110671087 B CN110671087 B CN 110671087B
- Authority
- CN
- China
- Prior art keywords
- simulation system
- simulation
- pressure
- phase flow
- fracture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
Abstract
The invention provides a multi-scale crack two-phase flow simulation evaluation device. The apparatus may comprise: the system comprises a gas reservoir simulation system, a liquid phase injection system, a production well fracture simulation system, a fracturing well fracture simulation system, a two-phase flow metering system, a temperature simulation system and a monitoring system; the gas reservoir simulation system provides simulated gas; the liquid phase injection system provides simulated liquid; the production well fracture simulation system and the fracturing well fracture simulation system can simulate artificial supporting fractures and natural fracture development zones; the two-phase flow metering system respectively meters the two-phase flow of the fluid discharged by the two simulation systems; the temperature simulation system adjusts the temperature of the two simulation systems; the monitoring system can monitor the temperature and pressure values of the two simulation systems. The beneficial effects of the invention include: the device has scientific and reasonable design, can realize the simulation of the development degree of a real natural crack, can realize the simulation of gas-liquid two-phase flow in the crack and cross flow between the cracks, and can provide experimental support for the prediction technology of the dynamic pressure field of the gas well.
Description
Technical Field
The invention relates to the technical field of yield increase transformation of unconventional oil and gas reservoirs, in particular to a multi-scale fracture internal two-phase flow simulation testing device.
Background
In order to increase clean energy supply, optimize and adjust an energy structure and meet the requirements of rapid development of economic society, continuous improvement of the living standard of people and green low-carbon environment construction, the shale gas exploration and development strength and depth are inevitably improved on the basis of great breakthrough in the former period. However, due to the influence of geological characteristics of the shale reservoir, the stable production capacity after the horizontal well pressure of the shale gas is poor, and the yield is decreased quickly. In order to meet the demand of capacity construction, the gap of decreasing the productivity of the gas well at the early stage is usually made up by increasing the number of drilling wells. Because the distance between the later-stage development well (also called as a transformation operation well) and the bottom of the earlier-stage production well is short, the later-stage development well is influenced by the common factors of pressure drop funnels formed by the earlier-stage production well, natural shale cracks, and the like, the inter-well communication phenomenon is generated between the later-stage development well and the earlier-stage production well in the yield-increasing transformation process of the later-stage development well, and the gas production effect of the earlier-stage production well and the transformation effect of the fracturing transformation well are further influenced.
Currently, aiming at the research of gas-liquid two-phase flow simulation in a fracture, simulation is carried out on gas-water two-phase flow under the underground high-temperature and high-pressure condition through a numerical model, the influence of different gas-phase flow and liquid-phase flow on the two-phase flow is evaluated through the obtained gas-water two-phase flow pattern, or the pressure field distribution and the fracture yield distribution result of the gas-liquid two-phase flow of a shaft of a horizontal well are obtained by adopting a numerical method to solve through establishing a well testing model for coupling the gas-liquid two-phase flow and the stratum seepage of the; in the field of indoor experiments, simulation evaluation is only carried out on flow characteristics of multiphase flow in cracks under different scale conditions (macro-scale natural cracks and micro-scale cracks), and no quantitative test for flow interference physical simulation experiment evaluation devices in cracks under the conditions of hydraulic cracks-natural cracks and multi-scale cracks and pressure distribution in cracks of a production well/fracturing well and gas production change of the production well under the condition of communication between wells in accordance with actual field production exists. Therefore, in order to accurately evaluate the gas production rate of the production well and the change conditions of the pressure in the fracture and the pressure in the fracture of the fracturing well under the condition of communication between the production well and the fracturing well under different production systems, an indoor physical simulation experiment device and a test method need to be developed, and experiment support is provided for establishing a dynamic stress field model of the production well under the condition of interference between the fractures.
Disclosure of Invention
In view of the deficiencies in the prior art, it is an object of the present invention to address one or more of the problems in the prior art as set forth above. For example, one of the objectives of the present invention is to provide a multi-scale fracture two-phase flow simulation evaluation device to accurately simulate natural fracture development and test gas-liquid two-phase conditions under the inter-well communication condition.
In order to achieve the aim, the invention provides a multi-scale fracture two-phase flow simulation evaluation device.
The apparatus may comprise: the system comprises a gas reservoir simulation system, a liquid phase injection system, a production well fracture simulation system, a fracturing well fracture simulation system, a two-phase flow metering system, a temperature simulation system and a monitoring system, wherein the gas reservoir simulation system comprises a gas compressor and is connected with a fluid inlet end of the production well fracture simulation system through a pipeline so as to provide gas for simulation; the liquid phase injection system is respectively connected with the fluid inlet ends of the production well fracture simulation system and the fracturing well fracture simulation system through pipelines so as to provide liquid for simulation; the production well fracture simulation system comprises a first semi-closed shell, a first cover plate and a first rock plate, wherein the first semi-closed shell is provided with a first cavity, an opening is formed in the outer surface of the shell by the cavity, M groups of pore channels distributed in a first direction are formed in the bottom of the first cavity, each group of pore channels comprise a first outer pore channel and a first pressure measuring pore channel which penetrate through the semi-closed shell, a first inlet channel and a first outlet channel which are communicated with the outside and the first cavity and face each other are further arranged on the first semi-closed shell, the axial lines of the first inlet and the outlet channels are perpendicular to the opening direction of the first cavity, the first inlet channel forms a fluid inlet end of the production well fracture simulation system, and the first direction is the direction from the first inlet channel to the first outlet channel; the first cover plate covers the opening of the first semi-closed shell; the first rock plate is arranged in the first cavity, one surface of the first rock plate is connected with the bottom surface of the first cavity, M first inner pore channels which are distributed along the first direction and can correspond to the first outer pore channels are arranged on the first rock plate, the first inner pore channels penetrate through two surfaces of the first rock plate, and the axes of the first outer pore channels and the first inner pore channels which are in corresponding relation are on the same straight line and jointly form a first pipeline connecting pore channel; the first rock plate, the first cover plate and part of the first cavity enclose a first laying belt, and the first inlet channel and the first outlet channel are communicated with the first laying belt; the fracturing well fracture simulation system comprises a second semi-closed shell, a second cover plate and a second rock plate, wherein the second semi-closed shell is provided with a second cavity, an opening is formed in the outer surface of the shell by the cavity, M groups of pore channels distributed in a second direction are formed in the bottom of the second cavity, each group of pore channels comprise a second outer pore channel and a second pressure measuring pore channel which penetrate through the second semi-closed shell, a second inlet channel and a second outlet channel which communicate the outside with the second cavity and face each other are further arranged on the second semi-closed shell, the axes of the second inlet and the outlet channels are perpendicular to the opening direction of the second cavity, the second inlet channel forms a fluid inlet end of the fracturing well fracture simulation system, and the second direction is the direction from the second inlet channel to the second outlet channel; the second cover plate covers the opening of the second semi-closed shell; the second rock plate is arranged in the second cavity, one plate surface of the second rock plate is connected with the bottom surface of the second cavity, M second inner pore channels which are distributed along the second direction and can correspond to the second outer pore channels are arranged on the second rock plate, the second inner pore channels penetrate through two plate surfaces of the second rock plate, and the axes of the second outer pore channels and the second inner pore channels which are in corresponding relation in pairs are on the same straight line and jointly form a second pipeline connecting pore channel; the second rock plate, the second cover plate and part of the second cavity enclose a second laying belt, and the second inlet channel and the second outlet channel are communicated with the second laying belt; the two-phase flow metering system is respectively connected with the fluid discharge ends of the production well fracture simulation system and the fracturing well fracture simulation system so as to meter the flow values of gas phase and liquid phase in the fluid discharged by the production well fracture simulation system and the fracturing well fracture simulation system; the temperature simulation system can adjust the temperature of the production well fracture simulation system and the fracturing well fracture simulation system so as to simulate the temperature under different reservoir burial depth conditions; the monitoring system comprises a pressure monitoring unit and a temperature monitoring unit, the pressure monitoring unit can monitor pressure values in the production well fracture simulation system and the fracturing well fracture simulation system, and the temperature monitoring unit can monitor temperature values of the production well fracture simulation system and the fracturing well fracture simulation system.
According to an exemplary embodiment of the present invention, the liquid phase injection system may include a first liquid tank, a first liquid phase adjusting valve, a pump, a second liquid tank, and a second liquid phase adjusting valve, which are sequentially disposed in a liquid flow direction.
According to an example embodiment of the invention, the production well fracture simulation system may further comprise proppant disposed in the first paved zone, the fractured well fracture simulation system further comprising proppant disposed in the second paved zone.
According to an exemplary embodiment of the present invention, the M first pipe connecting holes and the M second pipe connecting holes may correspond one to one, and the apparatus further includes M communication lines, each of which connects the first and second pipe connecting holes in a corresponding relationship.
According to an exemplary embodiment of the present invention, the apparatus may further include M regulating valves, wherein each regulating valve is disposed on one of the communicating pipes.
According to an exemplary embodiment of the present invention, the production well fracture simulation system may further include a first base capable of placing the first semi-closed casing, and a first lifting mechanism for supporting the first base, the first lifting mechanism including at least two lifting columns connected to different positions on a bottom surface of the first base;
the fracture simulation system for the fracturing well can further comprise a second base capable of placing the second semi-closed shell and a second lifting mechanism used for supporting the second base, wherein the second lifting mechanism comprises at least two lifting columns connected to different positions of the bottom surface of the second base.
According to an exemplary embodiment of the present invention, the first cover plate and the first semi-closed housing, and the second cover plate and the second semi-closed housing may be connected by a fixing member.
According to an exemplary embodiment of the present invention, the first rock plate and the cavity wall of the first cavity are sealed by a sealant, and the second rock plate and the cavity wall of the second cavity are also sealed by a sealant.
According to an exemplary embodiment of the invention, the face of the first rock facing the opening of the first semi-enclosed housing and the face of the second rock facing the opening of the second semi-enclosed housing are artificially etched rough faces. .
According to an exemplary embodiment of the invention, the temperature simulation system may comprise a first housing heating jacket, a second housing heating jacket, wherein the first housing heating jacket is capable of heating the first semi-enclosed housing; the second housing heating jacket is capable of heating the second semi-enclosed housing.
According to an exemplary embodiment of the present invention, the pressure monitoring unit may include a first inlet pressure gauge, a first outlet pressure gauge, a second inlet pressure gauge, a second outlet pressure gauge, wherein the first inlet pressure gauge may monitor a pressure of fluid flowing into the production well fracture simulation system; the first outlet pressure gauge is capable of monitoring the pressure of fluid flowing from the production well fracture simulation system; the second inlet pressure gauge is capable of monitoring the pressure of fluid flowing into the fractured well fracture simulation system; the second outlet pressure gauge is capable of monitoring the pressure of fluid flowing from the fractured well fracture simulation system.
According to an exemplary embodiment of the present invention, the pressure monitoring system may comprise M first pressure sensors, M second pressure sensors, wherein each first pressure sensor is disposed within one of the first pressure measurement channels; each second pressure sensor is disposed within one of the second pressure taps.
According to an exemplary embodiment of the present invention, one or more visualization windows may be disposed on both the first and second cover plates
According to an exemplary embodiment of the invention, the device further comprises a data acquisition system and a control system, wherein the data acquisition system is respectively connected with the two-phase flow metering system and the monitoring system to acquire the values monitored by the two-phase flow metering system and the monitoring system; the control system is respectively connected with the gas reservoir simulation system and the liquid phase injection system so as to control the flow rate of gas provided by the gas reservoir simulation system and the flow rate of liquid provided by the liquid phase injection system.
According to an exemplary embodiment of the invention, the data acquisition system may be connected to a control system.
According to an exemplary embodiment of the invention, the fractured well fracture simulation system may further comprise a regulating valve disposed on the second outlet channel. The regulating valve can enable the second outlet channel to be in a circulating or closed state, and can regulate the opening degree during circulation.
Compared with the prior art, the beneficial effects of the invention can include: the device has simple structure and scientific and reasonable design; the simulation of the development degree of the natural fractures in the real reservoir environment can be realized; the simulation of horizontal well section box body difference or different well arrangement and seam distribution modes can be realized; the simulation of gas-liquid two-phase flow in the gap and cross flow between the gaps can be realized, and experimental support is provided for the prediction technology of the dynamic pressure field of the gas well.
Drawings
The above and other objects and features of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:
FIG. 1 shows a schematic cross-sectional view of the fracture height-width plane of the fractured well fracture simulation system of the present invention;
FIG. 2 shows a schematic top view of a visualization window cover plate of the fractured well fracture simulation system of the present invention;
FIG. 3 shows a schematic top view of a semi-enclosed housing of the fractured well fracture simulation system of the present invention;
FIG. 4 shows a schematic of the base and support columns of the fractured well fracture simulation system of the present invention;
FIG. 5 shows a schematic diagram of a multi-scale fracture two-phase flow simulation evaluation device in an example of the invention;
description of the main reference numerals:
100-gas reservoir simulation system, 110-air compressor, 120-gas injection switch valve; 200-a liquid phase injection system, 210-a clean water tank, 220-a clean water tank switch valve, 230-a constant-current and constant-pressure pump, 240-a liquid storage tank and 250-a liquid storage tank switch valve; 300-a production well fracture simulation system, 310-a first outer pore passage, 320-a first pressure measuring pore passage; 400-a fractured well fracture simulation unit, 410-a second semi-closed shell, 411-a second cavity, 412-a second outer pore channel, 413-a second pressure measuring pore channel, 414-a second inlet channel, 415-a second outlet channel, 416-a groove, 417-a second semi-closed shell connecting pore channel, 420-a second cover plate, 421-a visual window, 422-a second cover plate connecting pore channel, 430-a second rock plate, 431-a second inner pore channel, 440-a second laying belt, 450-a base and 460-a supporting column; 500-two-phase flow metering system, 510 first two-phase flow metering unit, 511-first gas-liquid separator, 512-first gas flow meter, 513-first liquid flow meter, 514-first gas discharge liquid tank, 515-first pressure relief valve, 516-first raffinate metering tank, 520 second two-phase flow metering unit, 521-second gas-liquid separator, 522-second gas flow meter, 523-second gas discharge liquid tank, 524-second liquid flow meter, 525-second pressure relief valve, 526-second raffinate metering tank 526; 600-temperature simulation system, 610-first heating jacket, 620-second heating jacket; 700-temperature pressure monitoring system, 710-temperature monitoring unit, 711-first temperature sensor, 712-second temperature sensor, 720-pressure monitoring unit, 721-first inlet pressure gauge, 722-first outlet pressure gauge, 723-second inlet pressure gauge, 724-second outlet pressure gauge, 730-pressure monitoring unit, 731-first pressure sensor, 732-second pressure sensor; 800-a data acquisition system; 900-control system.
Detailed Description
Hereinafter, the multi-scale fracture two-phase flow simulation evaluating device of the present invention will be described in detail with reference to the accompanying drawings and exemplary embodiments. The first, second, etc. of the present invention do not indicate a sequential order, but are used for distinguishing each other.
The invention provides a multi-scale crack two-phase flow simulation evaluation device. The device can simulate the change conditions of the pressure and the gas production rate in the production well joints of different production systems under the condition of natural crack development and the condition of communication between test wells, can be used for evaluating the influence of the interference factors between wells, such as the existence and the development degree of natural cracks, the box body difference of horizontal well sections, different well spacing and seam crossing modes, the channeling flow among wells and the like, on the gas production effect and the pressure distribution in the joints of a production well, and can provide support for the establishment of a dynamic pressure field model of the production well under the condition of the interference between the joints.
In an exemplary embodiment of the invention, the device for simulating two-phase flow in the multi-scale fracture and evaluating the inter-fracture interference may comprise:
the system comprises a gas reservoir simulation system, a liquid phase injection system, a production well fracture simulation system, a fracturing well fracture simulation system, a two-phase flow metering system, a temperature simulation system and a monitoring system.
Wherein the gas reservoir simulation system is capable of providing a gas for simulation, which may include nitrogen, to the production well fracture simulation system. The gas reservoir simulation system may include a compressor, such as an air compressor. The injection flow of the air compressor can meet the maximum 20L/min, and the precision can be 0.1L/min. The gas reservoir simulation system can be connected with an inlet of the production well crack simulation system through a high-pressure-resistant connecting pipeline, and a gas injection switch valve can be arranged on one section of the high-pressure-resistant connecting pipeline, which is close to the compressor.
The liquid phase injection system can be respectively connected with the production well fracture simulation system and the fracturing well fracture simulation system to provide fracturing fluid for simulation, and the fluid can comprise slickwater, and the viscosity of the slickwater can be 2-3 mpa & s. The liquid phase injection system can comprise a first liquid storage tank, a first liquid phase regulating valve, a pump, a second liquid storage tank and a second liquid phase regulating valve which are sequentially connected through pipelines along the liquid flowing direction. The first liquid storage tank is stored with water; the pump can be a constant-current and constant-pressure pump, so that the liquid injection process can be ensured to be in a constant-displacement state to meet the actual situation; the injection flow of the constant-current constant-pressure pump can meet the maximum 20mL/min, the precision can be 0.1mL/min, and the viscosity range of the liquid injected by the liquid-phase injection system can be 1-100 mPas. The second liquid storage tank can be a piston container, because the upper part of a piston in the piston container is filled with liquid (clear water) by a constant-current and constant-pressure pump, the lower part of the piston is fracturing liquid (slick water), and the constant-current and constant-pressure pump pushes the piston to press downwards after being started, so that the fracturing liquid entering a fracture system is ensured to be suitable for field practice (the explanation of part of reasons can not be specifically explained). The liquid phase injection system can be respectively connected with the production well crack simulation system and the fracturing well crack simulation system through high-pressure-resistant connecting pipelines.
The production well fracture simulation system and the fracturing well fracture simulation system can simulate artificial supporting fractures and natural fracture development zones.
The two-phase flow measurement system is respectively connected with the production well crack simulation system and the fracturing well crack simulation system so as to measure the flow values of the gas and the liquid exhausted by the production well crack simulation system and the fracturing well crack simulation system.
The temperature simulation system can adjust the temperature of the production well fracture simulation system and the fracturing well fracture simulation system so as to simulate the temperature under different reservoir burial depth conditions.
The monitoring system comprises a pressure monitoring unit and a temperature monitoring unit, the pressure monitoring unit can monitor pressure values in the production well fracture simulation system and the fracturing well fracture simulation system, and the temperature monitoring unit can monitor temperature values of the production well fracture simulation system and the fracturing well fracture simulation system.
In this embodiment, the production well fracture simulation system and the pressure well fracture simulation system can be connected through a pipeline.
In this embodiment, the apparatus may further include a fluid conversion unit, and the fluid conversion unit may include a three-way conversion connector, and further may be a high pressure resistant three-way conversion connector. The fluid crossover joint can be controlled to selectively input gas or liquid into the production well fracture simulation system.
In this embodiment, the structures of the production well fracture simulation system and the fracturing well fracture simulation system may be the same or similar, and both may include a semi-closed housing, a cover plate, a rock plate, and the like, which may be determined according to actual requirements.
Taking the example of a fractured well fracture simulation system, as shown in fig. 1, the fractured well fracture simulation system may include a second semi-enclosed housing 410, a second cover plate 420, and a second rock plate 430. Wherein the content of the first and second substances,
the second semi-enclosed housing 410 may have a semi-enclosed cavity 411 (i.e., the second cavity) and the cavity forms a one-way opening on the outer surface of the housing. The bottom of the cavity is provided with M groups of pore channels distributed along the first direction, and each group of pore channels comprises a second outer pore channel 412 and a second pressure measuring pore channel 413 which penetrate through the second semi-closed shell. As shown in fig. 2, the second semi-closed housing 410 is further provided with a second inlet channel 414 and a second outlet channel 415 which are used for communicating the outside with the cavity and face each other, wherein the axes of the second inlet channel 414 and the second outlet channel 415 are both perpendicular to the opening direction of the second cavity 411, and the second inlet channel 414 and the second outlet channel 415 can respectively form an inlet end and an outlet end of the fracture simulation system. The second direction is the direction from the second inlet passage 414 to the second outlet passage 415.
The second cover plate 420 covers over the opening of the second semi-enclosed housing 410. The second cover plate 420 and the second semi-closed housing 410 may be connected by a fixing member. The fixing member may include fastening bolts, and the number of the fastening bolts may be determined according to actual conditions.
The second rock 430 is disposed in the second cavity 411 and one face of the second rock 430 is connected to the bottom of the second cavity 411. The second rock plate 430 is provided with M second inner holes 431 which are distributed along the first direction and can respectively correspond to each second outer hole 412, the second inner holes 431 penetrate through two plate surfaces of the second rock plate 430, and the axes of the second outer holes 412 and the second inner holes 431 which are in corresponding relation in pair are on the same straight line.
The second cavity 411, the second rock 430 and the second cover plate 420 enclose a second laying belt 440, and the second inlet passage 414 and the second outlet passage 415 of the second semi-enclosed housing 410 communicate with the second laying belt 440.
In this embodiment, the fractured well fracture simulation system further includes proppant disposed in the second paved zone 440.
In this embodiment, as shown in fig. 1, the second outer bore 412 and the second inner bore 431 in a corresponding relationship together form a second pipeline connecting bore, and the pipeline connecting bore may be connected with the first pipeline connecting bore of the production well fracture simulation system through a pipeline.
In this embodiment, the surface of the second rock 430 facing the second cover plate 420 is a rough surface formed by artificial etching.
In this embodiment, one or more visualization windows 421, for example, 8 visualization windows 421 shown in fig. 2, may be disposed on the second cover plate 420 for observing fluid flow changes in the fracturing well, for example, the flow state of fluid in the fracture under the condition of communication between wells.
As shown in fig. 3, the center line of the closed surface of the second semi-closed housing is provided with 5 groups of 10 pore channels along the length direction, and the size of each pore channel can be 5mm (aperture) × 30mm (length).
As shown in fig. 2, the second cover 420 may further have a plurality of second cover connecting holes 422, and as shown in fig. 3, the second semi-enclosed casing 410 may further have a plurality of second semi-enclosed casing connecting holes 417 corresponding to the respective cover connecting holes 422. When the second cover plate 420 is placed over the opening side (i.e., the side having the first opening) of the second semi-closed housing 410, the respective openings 422 of the second cover plate 420 and the respective openings 417 of the first semi-closed housing may face each other one by one, and a fastener may be inserted into the corresponding openings 422 and openings 417 to connect the second cover plate 420 and the second semi-closed housing 410.
In the present embodiment, as shown in fig. 3, grooves 416 may be formed on the contact surfaces of the second semi-hermetic case 410 and the second cover plate 420, and sealing may be performed between the second semi-hermetic case 410 and the second cover plate 420 by sealing gaskets placed in the grooves 416.
In the present embodiment, as just one example, the second semi-closed housing 410 may have dimensions of 550mm × 340mm × 50mm, the second semi-closed housing closed surface may have dimensions of 550mm × 340mm × 20mm (thickness), the second cavity 411 may have dimensions of 450mm × 240mm × 30mm, and the groove 416 may have dimensions of 10mm × 500mm × 290 mm. The cover plate can be 550mm × 340mm × 30mm in size, and the visualization window 421 can be 72mm × 72mm in size.
In this embodiment, the production well fracture simulation system may be connected to the fracturing well fracture simulation system via a pipeline to simulate communication between wells. The first pipeline connecting pore canal in the production well fracture simulation system is connected with the second pipeline connecting pore canal in the fracturing well fracture simulation system through pipelines respectively so as to simulate natural fracture development zones among wells.
The first pore channels (namely corresponding outer pore channels) of each group, which are arranged in the middle of the closed surfaces of the first semi-closed shell and the second semi-closed shell along the length direction, are connected through pressure-resistant pipelines and used for simulating natural crack development zones between wells, switch valves are arranged on the pressure-resistant pipelines, the outer diameter of each pressure-resistant pipeline is 5mm, the flowing inner diameter of each pressure-resistant pipeline is 3mm, and the maximum pressure bearing capacity of each pressure-resistant pipeline is 5 MPa. The natural shale rock plate of the production well fracture simulation system and the fracturing well fracture simulation system is provided with a pore canal corresponding to the position of the simulated pore canal of the natural fracture development zone along the length direction, and the outer diameter of the pore canal can be 3 mm.
The M groups of first pipeline connecting pore passages in the production well fracture simulation system and the M groups of second pipeline connecting pore passages in the fracturing well fracture simulation system can be communicated one by one through M communicating pipelines. The communicating pipelines can be high-pressure-resistant pipelines, the outer diameter of the pressure-resistant pipeline can be 5mm, the inner diameter of the pressure-resistant pipeline can be 3mm, and the maximum pressure bearing can be 5 MPa. Each of the communication lines may be provided with a regulating valve, such as a switching valve, which can make the first and second communication lines in a circulating or closed state, and further, can regulate the flow rate of the circulating fluid.
In this embodiment, the production well fracture simulation system and the fracturing well fracture simulation system may further include a base and a plurality of support columns for supporting the base.
The base can be used to house a semi-enclosed housing.
The lifting mechanism can comprise at least two lifting columns connected to different positions of the bottom surface of the base; for example, in the case that the bottom of the base is rectangular, the lifting mechanism may include four lifting columns, and the four lifting columns may be respectively disposed at four corners of the bottom of the base.
FIG. 4 shows a schematic of a base and support columns of a fracture simulation system for a fractured well. The production well fracture simulation system may also include a base 450 and support columns 460 as shown in FIG. 4. The first semi-enclosed housing 410 may be placed on the base 450, the base 350 may be supported by a plurality of support columns 360, the support columns 360 may be hydraulic full-automatic lifting columns, the number of the support columns 360 is at least two, for example, in the case that the base bottom is rectangular, the support columns may be lifting columns and the number thereof is four, and the four lifting columns may be respectively disposed at four corners of the base bottom.
In this embodiment, the two-phase flow metering system may include first and second two-phase flow metering units. The first two-phase flow metering unit is arranged behind the production well fracture simulation system, and the second two-phase flow metering unit is arranged behind the fracturing well fracture simulation system.
Each two-phase flow metering unit comprises a gas-liquid separator, a gas metering assembly and a liquid metering assembly. Wherein, gas metering component is connected with gas-liquid separator's gas exhaust end to including connecting gradually gas flowmeter, gas exhaust liquid groove (for example pressure release basin), gas flowmeter measuring range can be 0 ~ 500SCCM, and measurement accuracy can be 1% F.S. The liquid metering component comprises a liquid flow meter, a safety pressure relief valve and a residual liquid metering tank (also called a residual liquid metering tank) which are connected in sequence.
In this embodiment, the temperature simulation system may include first and second heating jackets.
The first shell heating jacket can heat a semi-enclosed shell of the production well fracture simulation system.
The second shell heating jacket can heat the semi-closed shell of the fractured well fracture simulation system.
In this embodiment, the pressure monitoring unit may include a first inlet pressure gauge, a first outlet pressure gauge, a second inlet pressure gauge, and a second outlet pressure gauge. Wherein the content of the first and second substances,
the first inlet pressure gauge is capable of monitoring the pressure of fluid flowing into the production well fracture simulation system; the first inlet pressure gauge may be disposed on an inlet passage of the production well fracture simulation system housing or a pipeline connected to the production well fracture simulation system inlet passage.
The first outlet pressure gauge is capable of monitoring the pressure of fluid flowing from the production well fracture simulation system; the first outlet end pressure gauge is arranged on an outlet channel of the production well fracture simulation system shell or a pipeline connected with the outlet channel.
The second inlet pressure gauge is capable of monitoring the pressure of fluid flowing into the fractured well fracture simulation system; the second inlet pressure gauge is arranged on an inlet channel of the fracturing well fracture simulation system shell or a pipeline connected with the inlet channel.
The second outlet pressure gauge is capable of monitoring the pressure of fluid flowing out of the fractured well fracture simulation system; and the second outlet pressure gauge is arranged on an outlet channel of the fracturing well fracture simulation system shell or a pipeline connected with the outlet channel.
In this embodiment, the pressure monitoring unit may further include first and second pressure sensors.
The first pressure sensors are arranged in the first pressure measuring hole channels and can monitor the pressure in the pressure measuring hole channels, and the number of the first pressure sensors can be the same as that of the first pressure measuring hole channels.
The second pressure sensors are arranged in the second pressure measuring hole channels and can monitor the pressure in the pressure measuring hole channels, and the number of the second pressure sensors can be the same as that of the second pressure measuring hole channels.
In the flowing process of fluid in the gap, the pressure in the gap is mostly non-uniformly distributed along the length direction of the gap under the influence of the fracture occurrence, and when the pressure in the gap is influenced by a natural fracture development zone under the stratum condition, the pressure in the gap is changed due to the fluid series flow (on the basis of the influence of the fracture occurrence), and the pressure measured by the first pressure sensor and the second pressure sensor is the pressure in the gap after the gap is communicated, so that the influence of the gap communication on the pressure in the gap can be evaluated.
In this embodiment, the temperature monitoring unit may include first and second temperature sensing components. Wherein the first temperature sensing assembly is connectable to a production well fracture simulation system. The second temperature sensing assembly may be connected to a fractured well fracture simulation system.
In this embodiment, the apparatus further comprises a data acquisition system and a control system. Wherein the content of the first and second substances,
the data acquisition system can be respectively connected with the two-phase flow metering system and the monitoring system so as to acquire numerical values monitored by the two-phase flow metering system and the monitoring system;
the control system is respectively connected with the gas reservoir simulation system and the liquid injection system so as to control the flow rate of gas provided by the gas reservoir simulation system and the flow rate of liquid provided by the liquid phase injection system.
The control system may be a computer system. The control system may also be connected to a data acquisition system for analyzing the acquired data.
In order that the above-described exemplary embodiments of the invention may be better understood, further description thereof with reference to specific examples is provided below.
As shown in fig. 5, the test device for two-phase flow simulation and inter-fracture interference evaluation in multi-scale fracture may include:
the system comprises a gas reservoir simulation system 100, a liquid phase injection system 200, a production well fracture simulation system 300, a fracturing well fracture simulation system 400, a two-phase flow metering system 500, a temperature simulation system 600, a temperature and pressure monitoring system 700, a data acquisition system 800 and a control system 900. Wherein the content of the first and second substances,
the gas reservoir simulation system may include an air compressor 110, and a gas injection switch valve 120 is disposed on a pipeline connected to an air outlet of the air compressor. The outlet of the air compressor 110 is connected with the gas injection switch valve 120, the high-pressure resistant three-way adapter and the inlet channel of the production well crack simulation system in sequence through a high-pressure resistant connecting pipeline.
The liquid phase injection system 200 may include a clean water tank 210, a constant flow and pressure pump 230, and a liquid storage tank 240. The outlet end of the clean water tank 210 is provided with a clean water tank switch valve 220, and the outlet of the liquid storage tank 240 is provided with a liquid storage tank switch valve 250. The outlet end of the clean water tank 210 is sequentially connected with a clean water tank switch valve 220 and the suction end of a constant-current and constant-pressure pump 230, the discharge end of the constant-current and constant-pressure pump 230 is connected with the liquid inlet end of a liquid storage tank 240 through a high-pressure-resistant pipeline, and the liquid outlet end of the liquid storage tank 240 is respectively connected with a high-pressure-resistant three-way adapter on a pipeline of a gas reservoir simulation system and the liquid inlet end (also called as an inlet channel) of a.
The connection between the production well fracture simulation system and the fractured well fracture simulation system may be via a pipeline, such as the connecting pipeline between the first outer port 310 and the second outer port 412 in fig. 5, which may also be provided with a regulating valve.
The two-phase flow metering system 500 may include first and second two-phase flow metering units. Each two-phase flow metering unit can comprise a gas-liquid separator, a gas flowmeter and a pressure relief water tank are sequentially connected with the gas discharge end of the gas-liquid separator, and a liquid flowmeter, a safety relief valve and a residual liquid metering tank are sequentially connected with the liquid discharge end of the gas-liquid separator.
As shown in fig. 5, the first two-phase flow metering unit 510 is disposed outside an outlet channel of the production well fracture simulation system, and includes a first gas-liquid separator 511, a first gas flow meter 512, a first liquid flow meter 513, a first gas discharge tank 514, a first pressure relief valve 515, and a first raffinate metering tank 516.
The second two-phase flow metering unit 520 is arranged outside the outlet channel of the first fractured well fracture simulation unit and comprises a second gas-liquid separator 521, a second gas flow meter 522, a second liquid flow meter 524, a second pressure relief valve 525, a second raffinate metering tank 526 and a second gas discharge tank 523.
The temperature simulation system 600 may include housing heating jackets, i.e., a first heating jacket 610, a second heating jacket 620 as shown in fig. 5. The maximum heating temperature of the heating jacket is 150 ℃.
The temperature and pressure monitoring system 700 may include a temperature monitoring unit 710, a pressure measuring unit 720. Wherein the content of the first and second substances,
as shown in fig. 5, the temperature monitoring unit 710 may include a first temperature sensor 711 and a second temperature sensor 712. The measurement precision of the temperature sensor can be within 1 ℃.
The pressure measurement unit 720 may include: a first inlet pressure gauge 721, a first outlet pressure gauge 722, a second inlet pressure gauge 723, and a second outlet pressure gauge 724. The pressure gauge has a measuring range of 0-10 MPa, and the pressure measuring precision can be within 0.01 MPa. Namely, pressure gauges are arranged at the liquid inlet end position and the liquid outlet section position of the production well and the fracturing well crack simulation system. The liquid inlet pore passage of the production well and fracturing well simulated fracture system is connected with a high-pressure resistant pipeline through a double female joint, and the high-pressure resistant pipeline and the upper end surface of the inner cavity of the double female joint are sealed by adopting the end surface of a copper gasket.
As shown in fig. 5, the pressure monitoring unit 730 may include: a first pressure sensor 731 and a second pressure sensor 732. The measurement accuracy of the pressure sensor can be within 0.01 MPa. A first pressure sensor 831 may be disposed in each first pressure measuring hole 320; a second pressure sensor may be disposed in each second pressure tap.
The data acquisition system 800 may include a data acquisition device, as shown in fig. 5, which may be connected to the two-phase flow metering system and the monitoring system, respectively. The control system 900 may be connected to a gas reservoir simulation system, a liquid phase injection system, and a data acquisition system.
In summary, the multi-scale fracture two-phase flow simulation evaluating device of the present invention has the following advantages:
(1) compared with the intra-fracture gas-liquid two-phase flow simulation device used in the current indoor experiment, the device provided by the invention can realize the communication between a production well fracture simulation system and a fracturing well fracture simulation system, and can realize the simulation of the development degree of natural fractures in a real reservoir environment.
(2) Compared with a common gas-liquid two-phase flow simulation device in a fracture seam, the device can quickly adjust the relative heights of the fracture simulation system of the production well and the fracturing well or change the relative positions of the fracture simulation system of the fracturing well and the production well through the hydraulic full-automatic lifting column so as to realize the simulation of horizontal well section box body difference or different well arrangement and seam distribution modes.
(3) Compared with a common simulation device for gas-liquid two-phase flow in a crack gap, the simulation device can convert the gas flow speed in the crack of the production well and the channeling between the cracks after inter-well communication into the liquid-phase injection speed by adopting an on-site actual production system, and can realize the simulation of gas-liquid two-phase flow in the crack and channeling between the cracks as the gas-liquid two-phase injection speed, thereby providing experimental support for the prediction technology of the gas well dynamic pressure field.
(4) The device can effectively simulate the flow interference situation among the fractures under the conditions of different reservoir temperatures, natural shale plates, natural fracture development degrees, well arrangement modes, fracture arrangement modes, proppant types, sand laying amounts, production systems and the like, further evaluate the pressure distribution in the fractures of the fracturing wells and the production wells under the comprehensive action of the factors and the change situation of the production wells under the conditions of different production systems (water content in the fractures), and reveal main control factors influencing the interference among the wells.
(5) The device provided by the invention has the advantages that the structural design and the testing method are scientific and reasonable, the experimental operation is convenient, each component system of the device has pressure resistance and sealing performance meeting the experimental test requirements, and key data can be collected in real time through the data collector and analyzed through the computer control system in the experimental process.
(6) The device of the invention is characterized in that a pressure temperature monitoring system consisting of a temperature sensor, an intra-slit pressure sensor, a pressure gauge and a gas flowmeter is a high-precision data acquisition instrument, and the accuracy of test experimental data can be ensured.
Although the present invention has been described above in connection with exemplary embodiments, it will be apparent to those skilled in the art that various modifications and changes may be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (16)
1. A multi-scale fracture two-phase flow simulation evaluating device is characterized by comprising:
a gas reservoir simulation system, a liquid phase injection system, a production well fracture simulation system, a fracturing well fracture simulation system, a two-phase flow metering system, a temperature simulation system and a monitoring system, wherein,
the gas reservoir simulation system comprises a gas compressor and is connected with a fluid inlet end of the production well fracture simulation system through a pipeline so as to provide gas for simulation;
the liquid phase injection system is respectively connected with the fluid inlet ends of the production well fracture simulation system and the fracturing well fracture simulation system through pipelines so as to provide liquid for simulation;
the production well fracture simulation system comprises a first semi-closed shell, a first cover plate and a first rock plate, wherein the first semi-closed shell is provided with a first cavity, an opening is formed in the outer surface of the shell by the cavity, M groups of pore channels distributed in a first direction are formed in the bottom of the first cavity, each group of pore channels comprise a first outer pore channel and a first pressure measuring pore channel which penetrate through the semi-closed shell, a first inlet channel and a first outlet channel which are communicated with the outside and the first cavity and face each other are further arranged on the first semi-closed shell, the axial lines of the first inlet and the outlet channels are perpendicular to the opening direction of the first cavity, the first inlet channel forms a fluid inlet end of the production well fracture simulation system, and the first direction is the direction from the first inlet channel to the first outlet channel; the first cover plate covers the opening of the first semi-closed shell; the first rock plate is arranged in the first cavity, one surface of the first rock plate is connected with the bottom surface of the first cavity, M first inner pore channels which are distributed along the first direction and can correspond to the first outer pore channels are arranged on the first rock plate, the first inner pore channels penetrate through two surfaces of the first rock plate, and the axes of the first outer pore channels and the first inner pore channels which are in corresponding relation are on the same straight line and jointly form a first pipeline connecting pore channel; the first rock plate, the first cover plate and part of the first cavity enclose a first laying belt, and the first inlet channel and the first outlet channel are communicated with the first laying belt;
the fracturing well fracture simulation system comprises a second semi-closed shell, a second cover plate and a second rock plate, wherein the second semi-closed shell is provided with a second cavity, an opening is formed in the outer surface of the shell by the cavity, M groups of pore channels distributed in a second direction are formed in the bottom of the second cavity, each group of pore channels comprise a second outer pore channel and a second pressure measuring pore channel which penetrate through the second semi-closed shell, a second inlet channel and a second outlet channel which communicate the outside with the second cavity and face each other are further arranged on the second semi-closed shell, the axes of the second inlet and the outlet channels are perpendicular to the opening direction of the second cavity, the second inlet channel forms a fluid inlet end of the fracturing well fracture simulation system, and the second direction is the direction from the second inlet channel to the second outlet channel; the second cover plate covers the opening of the second semi-closed shell; the second rock plate is arranged in the second cavity, one plate surface of the second rock plate is connected with the bottom surface of the second cavity, M second inner pore channels which are distributed along the second direction and can correspond to the second outer pore channels are arranged on the second rock plate, the second inner pore channels penetrate through two plate surfaces of the second rock plate, and the axes of the second outer pore channels and the second inner pore channels which are in corresponding relation in pairs are on the same straight line and jointly form a second pipeline connecting pore channel; the second rock plate, the second cover plate and part of the second cavity enclose a second laying belt, and the second inlet channel and the second outlet channel are communicated with the second laying belt;
the two-phase flow metering system is respectively connected with the fluid discharge ends of the production well fracture simulation system and the fracturing well fracture simulation system so as to meter the flow values of gas phase and liquid phase in the fluid discharged by the production well fracture simulation system and the fracturing well fracture simulation system;
the temperature simulation system can adjust the temperature of the production well fracture simulation system and the fracturing well fracture simulation system so as to simulate the temperature under different reservoir burial depth conditions;
the monitoring system comprises a pressure monitoring unit and a temperature monitoring unit, the pressure monitoring unit can monitor pressure values in the production well fracture simulation system and the fracturing well fracture simulation system, and the temperature monitoring unit can monitor temperature values of the production well fracture simulation system and the fracturing well fracture simulation system.
2. The multi-scale fracture two-phase flow simulation evaluating device according to claim 1, wherein the liquid phase injection system comprises a first liquid storage tank, a first liquid phase regulating valve, a pump, a second liquid storage tank and a second liquid phase regulating valve which are sequentially arranged along a liquid flow direction.
3. The multi-scale fracture two-phase flow simulation evaluation device of claim 1, wherein the production well fracture simulation system further comprises proppant disposed in the first paved zone, and the fractured well fracture simulation system further comprises proppant disposed in the second paved zone.
4. The multi-scale fracture two-phase flow simulation evaluating device according to claim 1, wherein the M first pipeline connecting pore channels and the M second pipeline connecting pore channels can correspond one to one, the device further comprises M communicating pipelines, and each communicating pipeline connects the first and second pipeline connecting pore channels in a corresponding relationship.
5. The multi-scale fracture two-phase flow simulation evaluating apparatus according to claim 4, further comprising M regulating valves, wherein each regulating valve is disposed on one of the communicating pipelines.
6. The multi-scale fracture two-phase flow simulation evaluating device according to claim 1, wherein the production well fracture simulation system further comprises a first base capable of placing the first semi-closed housing, and a first lifting mechanism for supporting the first base, wherein the first lifting mechanism comprises at least two lifting columns connected to different positions of the bottom surface of the first base;
the fracturing well fracture simulation system further comprises a second base capable of placing the second semi-closed shell and a second lifting mechanism used for supporting the second base, wherein the second lifting mechanism comprises at least two lifting columns connected to different positions of the bottom surface of the second base.
7. The multi-scale fracture two-phase flow simulation evaluating device according to claim 1, wherein the first cover plate and the first semi-closed shell, and the second cover plate and the second semi-closed shell are connected through fixing members.
8. The multi-scale fracture two-phase flow simulation evaluating device according to claim 1, wherein the first rock plate is sealed with the cavity wall of the first cavity through a sealant, and the second rock plate is also sealed with the cavity wall of the second cavity through a sealant.
9. The multi-scale fracture two-phase flow simulation evaluating device according to claim 1, wherein the face of the first rock plate facing the opening of the first semi-closed shell and the face of the second rock plate facing the opening of the second semi-closed shell are both artificially etched rough faces.
10. The multi-scale fracture two-phase flow simulation evaluation device according to claim 1, wherein the temperature simulation system comprises a first shell heating jacket and a second shell heating jacket, wherein,
the first housing heating jacket is capable of heating the first semi-enclosed housing;
the second housing heating jacket is capable of heating the second semi-enclosed housing.
11. The multi-scale fracture two-phase flow simulation evaluation device according to claim 1, wherein the pressure monitoring unit comprises a first inlet pressure gauge, a first outlet pressure gauge, a second inlet pressure gauge, and a second outlet pressure gauge, wherein,
the first inlet pressure gauge is capable of monitoring the pressure of fluid flowing into the production well fracture simulation system;
the first outlet pressure gauge is capable of monitoring the pressure of fluid flowing from the production well fracture simulation system;
the second inlet pressure gauge is capable of monitoring the pressure of fluid flowing into the fractured well fracture simulation system;
the second outlet pressure gauge is capable of monitoring the pressure of fluid flowing from the fractured well fracture simulation system.
12. The multi-scale fracture two-phase flow simulation evaluation device according to claim 5, wherein the pressure monitoring system comprises M first pressure sensors and M second pressure sensors, wherein,
each first pressure sensor is arranged in one first pressure measuring pore channel;
each second pressure sensor is disposed within one of the second pressure taps.
13. The multi-scale fracture two-phase flow simulation evaluating device according to claim 1, wherein one or more visualization windows are disposed on both the first and second cover plates.
14. The multi-scale fracture two-phase flow simulation evaluation device according to claim 1, further comprising a data acquisition system and a control system, wherein,
the data acquisition system is respectively connected with the two-phase flow metering system and the monitoring system so as to acquire numerical values monitored by the two-phase flow metering system and the monitoring system;
the control system is respectively connected with the gas reservoir simulation system and the liquid phase injection system so as to control the flow rate of gas provided by the gas reservoir simulation system and the flow rate of liquid provided by the liquid phase injection system.
15. The multi-scale fracture two-phase flow simulation evaluating device according to claim 14, wherein the data acquisition system is connected with a control system.
16. The multi-scale fracture two-phase flow simulation evaluation device according to claim 1, wherein the fractured well fracture simulation system further comprises a regulating valve disposed on the second outlet channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911013869.9A CN110671087B (en) | 2019-10-23 | 2019-10-23 | Multi-scale crack two-phase flow simulation evaluating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911013869.9A CN110671087B (en) | 2019-10-23 | 2019-10-23 | Multi-scale crack two-phase flow simulation evaluating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110671087A CN110671087A (en) | 2020-01-10 |
| CN110671087B true CN110671087B (en) | 2021-06-08 |
Family
ID=69084015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911013869.9A Active CN110671087B (en) | 2019-10-23 | 2019-10-23 | Multi-scale crack two-phase flow simulation evaluating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110671087B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114464067A (en) * | 2022-03-08 | 2022-05-10 | 西南石油大学 | Multi-scale net-sewing experimental device and experimental method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7980312B1 (en) * | 2005-06-20 | 2011-07-19 | Hill Gilman A | Integrated in situ retorting and refining of oil shale |
| CA2583835C (en) * | 2006-04-13 | 2011-08-16 | Schlumberger Canada Limited | Sub-surface coalbed methane well enhancement through rapid oxidation |
| CN102465691A (en) * | 2010-11-10 | 2012-05-23 | 中国石油天然气股份有限公司 | Oil shale in-place destructive distillation mining method and simulated experiment system thereof |
| CN102587886A (en) * | 2012-03-20 | 2012-07-18 | 西南石油大学 | Testing device and testing method for flow conductivity of acid-eroded fractures |
| CN105160134A (en) * | 2015-09-30 | 2015-12-16 | 中国石油天然气股份有限公司 | Mixed medium simulation method and apparatus for oil and gas flow in multiple mediums of tight reservoir |
| CN105298488A (en) * | 2015-12-03 | 2016-02-03 | 中国石油集团川庆钻探工程有限公司 | Diversion capacity testing method under non-continuous filling mode |
| CN105986796A (en) * | 2015-02-10 | 2016-10-05 | 中国石油大学(北京) | Experimental method of fracture interaction of adjacent parallel hydraulic fractures in hydraulic fracturing process |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8392165B2 (en) * | 2009-11-25 | 2013-03-05 | Halliburton Energy Services, Inc. | Probabilistic earth model for subterranean fracture simulation |
| CN102590456B (en) * | 2012-02-20 | 2014-06-25 | 中国石油大学(华东) | Device and method for simulating volume fracturing of horizontal well on shale reservoir stratum |
| CN103277092A (en) * | 2013-05-17 | 2013-09-04 | 常州大学 | Horizontal well multistage fracturing variable mass multiphase flow simulation experiment device |
| CN103485759B (en) * | 2013-09-10 | 2016-09-07 | 中国石油大学(北京) | Oil/gas Well hydraulically created fracture extension visualized experiment method and device thereof |
| CN104033147A (en) * | 2014-06-23 | 2014-09-10 | 西南石油大学 | Low permeability horizontal well staged fracturing coupling flow experimental device |
| CN104614497B (en) * | 2015-03-09 | 2016-04-20 | 中国矿业大学 | True triaxial stream pressure fracturing, slot, seepage flow, gas drive integrated experimental system |
| CN106401551B (en) * | 2016-10-21 | 2018-03-13 | 中国石油大学(北京) | A kind of staged fracturing of horizontal well or synchronous pressure break experimental system for simulating |
| CN107514247A (en) * | 2017-10-23 | 2017-12-26 | 大庆东油睿佳石油科技有限公司 | A kind of device for simulating gas hydrates row's formula horizontal well seawater injection exploitation |
| GB2571338B (en) * | 2018-02-26 | 2021-02-10 | Technoleg Ltd | Extraction of hydrocarbons |
| CN108661604B (en) * | 2018-05-30 | 2020-06-16 | 北京方圆天地油气技术有限责任公司 | Method for extracting coal bed gas by adjacent stratum fracturing modification |
| CN109113692B (en) * | 2018-08-23 | 2021-08-17 | 中国石油大学(华东) | Matrix-fracture dual-medium huff-puff physical simulation device and method for evaluating recovery ratio in huff-puff process |
-
2019
- 2019-10-23 CN CN201911013869.9A patent/CN110671087B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7980312B1 (en) * | 2005-06-20 | 2011-07-19 | Hill Gilman A | Integrated in situ retorting and refining of oil shale |
| CA2583835C (en) * | 2006-04-13 | 2011-08-16 | Schlumberger Canada Limited | Sub-surface coalbed methane well enhancement through rapid oxidation |
| CN102465691A (en) * | 2010-11-10 | 2012-05-23 | 中国石油天然气股份有限公司 | Oil shale in-place destructive distillation mining method and simulated experiment system thereof |
| CN102587886A (en) * | 2012-03-20 | 2012-07-18 | 西南石油大学 | Testing device and testing method for flow conductivity of acid-eroded fractures |
| CN105986796A (en) * | 2015-02-10 | 2016-10-05 | 中国石油大学(北京) | Experimental method of fracture interaction of adjacent parallel hydraulic fractures in hydraulic fracturing process |
| CN105160134A (en) * | 2015-09-30 | 2015-12-16 | 中国石油天然气股份有限公司 | Mixed medium simulation method and apparatus for oil and gas flow in multiple mediums of tight reservoir |
| CN105298488A (en) * | 2015-12-03 | 2016-02-03 | 中国石油集团川庆钻探工程有限公司 | Diversion capacity testing method under non-continuous filling mode |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110671087A (en) | 2020-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106499385B (en) | Device and method for evaluating fracture environment setting of casing integrality | |
| CN113565482B (en) | Simulation device and method for simulating temporary plugging fracturing of horizontal well | |
| CN102590456A (en) | Device and method for simulating volume fracturing of horizontal well on shale reservoir stratum | |
| CN103592205B (en) | Device and method for testing diffusion coefficient of chemical potential in mudstone | |
| CN110593866B (en) | Multi-scale intra-crack gas-liquid two-phase flow simulation and inter-crack interference evaluation testing device | |
| CN108266166B (en) | Experimental device and method for evaluating fluctuation oil recovery micro-jet permeability-increasing mechanism of fractured reservoir | |
| CN110656918B (en) | Multi-scale crack two-phase flow simulation evaluation method | |
| CN111577236B (en) | Multi-section fracturing seepage simulation device for compact oil reservoir horizontal well | |
| CN104807850A (en) | Experimental device and method for measuring thermodynamic parameters of oil gas well shaft fluid and oil well pipe | |
| CN110671087B (en) | Multi-scale crack two-phase flow simulation evaluating device | |
| CN113418851B (en) | Seepage detection tester | |
| RU2589016C1 (en) | Method of determining air-tightness of downhole equipment with dual extraction of fluids from well with sucker-rod and electric-centrifugal pump | |
| CN107271639B (en) | Underground water simulation system and method | |
| CN108196002B (en) | Performance evaluation device and test method for temporary plugging steering fluid for fracture acidizing | |
| CN211008602U (en) | Multi-well type multi-section fracturing simulation system | |
| CN114109362A (en) | Device and method for evaluating performance of well cementation cement sheath with multiple cementing surfaces for oil and gas wells | |
| CN207393190U (en) | The experimental provision that geological structure simulation influences drainage procedure strata pressure | |
| CN111720101B (en) | Simulation system and simulation method for shale gas well fracturing flowback | |
| CN207393191U (en) | The experimental provision that simulation filtrational resistance influences drainage procedure strata pressure | |
| CN110792426A (en) | Visual dynamic fracture self-supporting fracturing process research experimental device | |
| CN211115949U (en) | Shale gas well crack simulation system | |
| CN110821466B (en) | Visual fracturing technology research experimental apparatus with variable seam width | |
| CN210858685U (en) | Acid-etched crack composite flow conductivity testing device | |
| CN116358612A (en) | Simulation experiment system for intelligent optical fiber well completion | |
| CN110685680B (en) | Large-size multi-angle acid etching crack acid liquid evaluation device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |