Fracturing filling performance detection system and method

Abstract

The invention discloses a fracturing filling performance detection system and method. The system comprises a fluid injection device, a flow meter, a first pressure meter, a fracturing filling simulation device, a second pressure meter, a filter, a metering tank, a density meter and a control device. According to the scheme, different fracturing filling scenes are simulated through the fracturing filling simulation device, and the injected fluid flow, the inlet pressure, the outlet pressure, the solid product amount, the liquid product amount and the liquid product density collected by the flow meter, the first pressure meter, the second pressure meter, the filter, the metering tank and the densimeter are utilized; a sand prevention performance index and / or a yield increase performance index are / is obtained through calculation, so that performance quantification of fracturing filling is achieved, and the precision of fracturing filling performance detection is improved; and the scheme is simple in structure, low in cost and suitable for large-scale application and implementation.

Description

Technical Field

[0001] The present application relates to the field of exploration technology, and in particular to a system and method for detecting fracturing and filling performance. Background Art

[0002] Fracturing and filling sand control is an exploration technology that combines hydraulic fracturing with filling technology to solve the sand production problem in loose sandstone reservoirs.

[0003] To study the effectiveness of frac packing in different scenarios, existing technologies often use simulation systems to test frac packing's sand control performance. However, these existing frac packing performance testing systems are limited to qualitative studies of the effects, resulting in insufficient accuracy. Summary of the Invention

[0004] In view of the above problems, the present application is proposed to provide a system and method for detecting fracturing filling performance that overcomes the above problems or at least partially solves the above problems.

[0005] According to a first aspect of the present application, a fracturing filling performance detection system is provided, comprising: a fluid injection device, a flow meter, a first pressure gauge, a fracturing filling simulation device, a second pressure gauge, a filter, a metering tank, a density meter, and a control device;

[0006] Wherein, the fluid injection device injects the displacement fluid into the fracturing and filling simulation device through a pipeline;

[0007] The flow meter is set in the pipeline between the fluid injection device and the fracturing filling simulation device to detect the flow rate of the injected fluid;

[0008] The first pressure gauge is provided in the pipeline between the fluid injection device and the fracturing filling simulation device, and is used to detect the inlet pressure;

[0009] The fracturing and filling simulation device is used to simulate different fracturing and filling scenarios and output the output to the filter;

[0010] The second pressure gauge is provided in the pipeline between the fracturing filling simulation device and the filter, and is used to detect the outlet pressure;

[0011] The filter is used to filter out and store solid output from the output of the fracturing and filling simulation device, measure the amount of solid output, and transfer the filtered liquid output to a metering tank;

[0012] The metering tank is used to measure the amount of liquid output;

[0013] The density meter is installed in the pipeline between the filter and the metering tank to detect the density of the liquid output flowing into the metering tank;

[0014] The control device is respectively communicated with the fluid injection device, the flow meter, the first pressure gauge, the second pressure gauge, the density meter, the filter, and the metering tank, and is used to control the fluid injection of the fluid injection device; and obtain the injected fluid flow, inlet pressure, outlet pressure, solid output amount, liquid output amount and liquid output density; and calculate the sand control performance index and / or the production increase performance index based on the injected fluid flow, inlet pressure, outlet pressure, solid output amount, liquid output amount and liquid output density.

[0015] In an optional embodiment, the fluid injection device includes: a liquid storage tank, a liquid injection pump, an air pump and a mixing tank;

[0016] The injection pump is connected to the liquid storage tank and is used to pump the liquid in the liquid storage tank into the mixing tank;

[0017] The air pump is used to pump gas into the mixing tank;

[0018] The mixing tank is used to mix liquid and gas to obtain displacement fluid.

[0019] In an optional embodiment, the fracturing and filling simulation device includes:

[0020] A cylinder wall with at least one inlet, a cylinder bottom with at least one outlet, a cylinder cover, and a simulated wellbore arranged in the cylinder; wherein the simulated wellbore can allow fluid to penetrate.

[0021] In an optional embodiment, the simulated wellbore includes: a screen capable of allowing fluid to penetrate;

[0022] Alternatively, the simulated wellbore includes: a screen pipe capable of allowing fluid to penetrate, and a casing sleeved on the outside of the screen pipe, wherein at least one perforation is formed on the casing.

[0023] In an optional embodiment, the simulated wellbore includes at least one of the following well types:

[0024] Vertical well simulation wellbore, directional well simulation wellbore, horizontal well simulation wellbore, and branch well simulation wellbore.

[0025] In an optional embodiment, the cylinder wall is composed of a plurality of cylinder wall short sections; a partition is inserted between at least one group of adjacent cylinder wall short sections.

[0026] In an optional embodiment, the fracturing filling performance detection system further includes at least one of the following fracture templates:

[0027] Single-wing crack templates, double-wing crack templates, branch crack templates, and complex crack templates of different sizes.

[0028] According to a second aspect of the present application, a method for detecting the performance of a fracture filling is provided. The method is performed based on the above-mentioned fracture filling performance detection system, and the method includes:

[0029] Fill the fracturing and filling simulation device according to the preset simulation parameters;

[0030] After filling is completed, the control device controls the fluid injection device to inject the displacement fluid into the fracturing filling simulation device;

[0031] The control device obtains the injection fluid flow rate, inlet pressure, outlet pressure, solid output amount, liquid output amount and liquid output density; and calculates the sand control performance index and / or production increase performance index based on the injection fluid flow rate, inlet pressure, outlet pressure, solid output amount, liquid output amount and liquid output density.

[0032] In an optional embodiment, filling the simulated formation into the fracturing filling simulation device according to preset simulation parameters includes:

[0033] Select the simulated wellbore according to the preset well type.

[0034] In an optional embodiment, filling the simulated formation into the fracturing filling simulation device according to preset simulation parameters includes:

[0035] A fracture template is selected according to preset fracture parameters, the fracture template is placed at a preset position in a fracturing and filling simulation device, and proppant is filled into the cavity of the fracture template.

[0036] The present application provides a system and method for detecting the performance of a fracturing filling, comprising a fluid injection device, a flow meter, a first pressure gauge, a fracturing filling simulation device, a second pressure gauge, a filter, a metering tank, a density meter, and a control device. This solution simulates different fracturing filling scenarios through a fracturing filling simulation device, and uses the injected fluid flow, inlet pressure, outlet pressure, solid output volume, liquid output volume, and liquid output density collected by the flow meter, the first pressure gauge, the second pressure gauge, the filter, the metering tank, and the density meter to calculate sand control performance indicators and / or production increase performance indicators, thereby quantifying the performance of the fracturing filling and improving the accuracy of the fracturing filling performance detection. Furthermore, this solution has a simple structure, low cost, and is suitable for large-scale application and implementation.

[0037] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to be limiting in

[0039] Figure 1 A structure diagram of a fracturing and packing performance detection system is shown.

[0040] Figure 2 A structure diagram of a fluid injection device is shown.

[0041] Figure 3 A structure diagram of a fracturing and packing simulation device is shown.

[0042] Figure 4 A structure diagram of another fracturing and packing simulation device is shown.

[0043] Figure 5 A fracture map formed by using different fracture templates is shown.

[0044] Figure 6 A multi-layer fracture map is shown.

[0045] Figure 7 A flow diagram of a fracturing and packing performance detection method is shown. DETAILED DESCRIPTION

[0046] Exemplary embodiments of the present application will be described herein below with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thoroughly and completely understood, and will fully convey the scope of the application to those skilled in the art.

[0047] Figure 1 A structure diagram of a fracturing and packing performance detection system is shown.

[0048] As shown in Figure 1 the fracturing and packing performance detection system includes a fluid injection device 10, a flow meter 20, a first pressure gauge 31, a fracturing and packing simulation device 40, a second pressure gauge 32, a filter 50, a metering tank 60, a density meter 70, and a control device 80.

[0049] The fluid injection device 10 is connected to the fracturing packing simulation device 40 through a pipeline, the fracturing packing simulation device 40 is connected to the filter 50 through a pipeline, and the filter 50 is connected to the metering tank through a pipeline; the control device 80 is connected to the fluid injection device 10, the flow meter 20, the first pressure gauge 31, the second pressure gauge 32, the density meter 70, the filter 50, and the metering tank 60 in communication.

[0050] The fluid injection device 10 injects displacement fluid into the fracturing packing simulation device 40 through a pipeline to start the displacement process. The displacement fluid is a fluid used to push the oil reservoir in the fracturing packing simulation device 40, which can include water, gas, and / or chemicals, etc.

[0051] The fracturing packing simulation device 40 is used to simulate different fracturing packing scenarios and output products to the filter 50. Different fracturing packing scenarios include different formation parameters, different well types, and / or different fracture parameters, i.e., the fracturing packing simulation device 40 contains a simulated formation according to the corresponding fracturing packing parameters. The fracturing packing simulation device 40 has at least one inlet and at least one outlet, the displacement fluid is injected into the fracturing packing simulation device 40 through the inlet, and the crude oil in the simulated formation in the fracturing packing simulation device 40 is displaced, so that the products are output through the outlet.

[0052] The flow meter 20 and the first pressure gauge 31 are arranged in the pipeline between the fluid injection device 10 and the fracturing packing simulation device 40. The flow meter 20 can detect the fluid flow into the fracturing packing simulation device 40, which is referred to as injection fluid flow, and can transmit the detected injection fluid flow to the control device 80 in real time or periodically through the communication connection between the control device 80. The first pressure gauge 31 can detect the pressure at the inlet of the fracturing packing simulation device 40, which is referred to as inlet pressure, and can transmit the detected inlet pressure to the control device 80 in real time or periodically through the communication connection between the control device 80. The specific flow meter is not limited in the present application, for example, the flow meter can be a FR80 turbine flow meter or an external clamp ultrasonic flow meter, etc.

[0053] The filter 50 receives the output from the fracturing and filling simulation device 40, which is typically a solid-liquid-gas mixture. The filter 50 performs a three-phase separation process on the mixed output into solid, liquid, and gas, thereby filtering out the solid output from the output. The filter 50 can then store the solid output and measure the solid output. For example, the filter 50 can be a sand filter with a metering function, which can accommodate the filtered solid output and use the metering function to measure the amount of the solid output, which can be the mass of the solid output or the volume of the solid output. The filter 50 can also transmit the collected solid output amount to the control device 80 via a communication connection with the control device 80.

[0054] A second pressure gauge 32 is installed in the pipeline between the fracturing and filling simulator 40 and the filter 50. This second pressure gauge 32 can detect the fluid pressure at the output side of the fracturing and filling simulator 40, referred to as the outlet pressure. The first pressure gauge 31 and / or the second pressure gauge 32 can be a ZHT-2300 laboratory digital pressure gauge, for example. Alternatively, the first and second pressure gauges 31 and 32 can be replaced with differential pressure sensors, such as a 3051 differential pressure sensor.

[0055] Metering tank 60 is used to receive the liquid output from filter 50 and measure the amount of the liquid output. The amount of the liquid output can be the mass or volume of the liquid output, which is not limited in this application. Metering tank 60 can transmit the measured amount of the liquid output to control device 80 via a communication connection with control device 80.

[0056] A densitometer 70 is provided in the pipeline between the filter 50 and the metering tank 60 . The densitometer 70 can detect the density of the fluid in the pipeline in real time, referred to as the liquid output density, and transmit the liquid output density to the control device 80 via a communication connection with the control device 80 .

[0057] The control device 80 is connected to the fluid injection device 10 and is used to control the fluid injection process of the fluid injection device 10, such as controlling the opening, closing, and injection flow rate of the fluid injection device 10.

[0058] The control device 80 also receives data transmitted by each sensor and processes the data to obtain sand control performance indicators and / or stimulation performance indicators. The sand control performance indicators are used to quantitatively measure sand control and water control performance, and the stimulation performance indicators are used to quantitatively measure stimulation performance. Specifically, the control device 80 obtains the injection fluid flow rate, the inlet pressure, the outlet pressure, the solid product amount, the liquid product amount, and the liquid product density, and calculates the sand control performance indicators and / or the stimulation performance indicators according to the injection fluid flow rate, the inlet pressure, the outlet pressure, the solid product amount, the liquid product amount, and the liquid product density, so as to realize quantitative evaluation of the pressure packing effect.

[0059] In actual implementation, the stimulation performance indicators can include the production pressure difference, the equivalent skin factor, the water-free oil production period, and / or the recovery rate, etc. The production pressure difference can be calculated according to the inlet pressure and the outlet pressure, the equivalent skin factor can be calculated according to the production pressure difference, the injection fluid flow rate, the fluid viscosity, and the reservoir permeability, etc., the water breakthrough time can be determined according to the liquid product density, for example, when the liquid product density detected by the densimeter reaches a preset density threshold, it indicates that water has been seen at present, and then the current time is recorded to calculate the water-free oil production period, and the recovery rate can be obtained according to the liquid product amount combined with the amount of crude oil filled into the fracturing packing simulation device.

[0060] The sand control performance indicators can include the sand production amount, the sand control stable period, etc. Specifically, the solid product amount-time curve can be obtained according to the solid product amount at different times, and the sand production amount in the corresponding period can be obtained according to the curve (for example, the integral of the curve in the corresponding period is the sand production amount), and the sand control stable period can also be determined according to the curve, that is, the continuous time length during which the sand production amount is less than a preset sand production amount threshold. In an optional embodiment, the filter 50 can also be connected to a particle size distribution detection device, so as to facilitate automatic analysis of the particle size distribution of the solid product, and further obtain the sand control performance indicators.

[0061] In addition, the water content of the liquid product can also be calculated according to the liquid product density, and the sand control and stimulation performance can be evaluated according to the water content.

[0062] Therefore, the fracturing packing performance detection system provided by the embodiments of the present application simulates different fracturing packing scenarios through the fracturing packing simulation device, and calculates the sand control performance indicators and / or the stimulation performance indicators according to the injection fluid flow rate, the inlet pressure, the outlet pressure, the solid product amount, the liquid product amount, and the liquid product density collected by the flow meter, the first pressure gauge, the second pressure gauge, the filter, the metering tank, and the densimeter, so as to realize performance quantification of the fracturing packing and improve the accuracy of the fracturing packing performance detection. Moreover, the fracturing packing performance detection system of the embodiments of the present application has simple structure and low cost, and is suitable for large-scale application and implementation.

[0063] In some optional embodiments, reference Figure 2 The fluid injection device 10 includes a liquid storage tank 11, a liquid injection pump 12, an air pump 13 and a mixing tank 14. The liquid injection pump 12 is connected to the liquid storage tank 11, and is used to pump the liquid in the liquid storage tank 11 into the mixing tank 14; the air pump 13 is used to pump gas into the mixing tank 14; and the mixing tank 14 is used to mix the liquid and the gas to obtain a displacement fluid. In this embodiment, the type and capacity of the specific liquid storage tank 11, the liquid injection pump 12, the air pump 13 and the mixing tank 14 are not limited. For example, the liquid storage tank 11 can have the functions of liquid storage and stirring and dissolving, and the effective volume can be 2m 3 The injection pump 12 can be one or more high-pressure double-cylinder plunger pumps with a displacement range of 0-20L / min, 0-50L / min, and a working pressure of 10MPa; the fluid viscosity range is 0-1000mPa·s; the air pump 13 can use a high-pressure piston air compressor with a working pressure of 0-30MPa and a displacement of 0-0.75m 3 / min; the mixing tank 14 can use a small tubular static mixer or the like.

[0064] Further optionally, the fluid injection device 10 can also inject simulated formation fluid into the fracturing and filling simulation device 40. Specifically, in one embodiment, the simulated formation fluid can be pre-configured based on the formation fluid parameters, and the simulated formation fluid can be directly filled into the fracturing and filling simulation device 40, so that in the subsequent displacement process, the fluid injection device 10 only needs to inject the displacement fluid into the fracturing and filling simulation device 40; in another embodiment, the fluid injection device 10 can inject simulated formation fluid into the fracturing and filling simulation device 40 in the stage before the displacement stage. For example, the reservoir production fluid can be prepared using clean water + chemical reagents, or the formation fluid can be generated using formation oil + water, and then the formation fluid is injected into the fracturing and filling simulation device 40.

[0065] In some optional embodiments, reference Figure 3The fracturing and filling simulation device 40 specifically includes: a cylinder wall 41 with at least one inlet 44, a cylinder bottom 43 with at least one outlet 45, a cylinder cover 42, and a simulated wellbore 47 arranged in the cylinder; wherein the simulated wellbore 47 can allow fluid to penetrate. Specifically, the cylinder wall 41, the cylinder bottom 43 and the cylinder cover 42 can constitute a closed cylinder, and the cylinder wall 41 can be provided with an inlet 44 in the circumferential direction (for example, 12 inlets are evenly arranged along the axial direction), and the displacement fluid can enter the fracturing and filling simulation device 40 through the inlet 44. The cylinder cover 42 is connected to the cylinder wall 41 and can be opened or closed freely. After the cylinder cover 42 is opened, the cylinder can be filled with simulated formations, etc. The cylinder bottom is provided with an outlet 45, which can be located at the center or eccentricity of the cylinder bottom, and the outlet 45 can be inserted into the simulated wellbore 47, and the output that penetrates into the simulated wellbore 47 flows out to the pipeline through the corresponding outlet. The simulated wellbore 47 is used to simulate the structure of a real wellbore. Its outer diameter is smaller than the inner diameter of the wellbore, thereby forming an annular three-dimensional space from the outside of the simulated wellbore 47 to the inside of the wellbore. This annular three-dimensional space can be used to fill simulated formation materials, etc. Thus, the fracturing and filling simulation device 40 can perform a fracturing and filling simulation.

[0066] Further optionally, the simulated wellbore 47 includes: a screen pipe that allows fluid to penetrate, thereby simulating logging without casing; or, the simulated wellbore includes: a screen pipe that allows fluid to penetrate, and a casing outside the screen pipe, with at least one perforation formed on the casing, thereby simulating logging with casing.

[0067] Further optionally, the simulated wellbore 47 includes at least one of the following: a vertical well simulated wellbore, a directional well simulated wellbore, a horizontal well simulated wellbore, and a branch well simulated wellbore. Thus, according to actual experimental requirements, a simulated wellbore of a corresponding well type can be selected and assembled into the fracturing and filling simulation device 40 to simulate production scenarios of different well types. Figure 3 and Figure 4 , which can select different simulated wellbores 47.

[0068] Further optional, such as Figure 3 As shown, the cylinder wall 41 is composed of multiple cylinder wall segments. Adjacent cylinder wall segments can be assembled axially, and a partition 46 is inserted between at least one set of adjacent cylinder wall segments. This creates an annular three-dimensional space that is axially layered. Each layer of the annular three-dimensional space can be filled with strata with different physical properties, simulating multi-layer commingled mining and production scenarios in heterogeneous formations. The partitions 46 are impermeable to fluids. Without the partitions 46, a single-layer mining scenario can be simulated.

[0069] In some optional embodiments, the fracturing filling performance detection system further includes at least one of the following fracture templates: single-wing fracture templates, double-wing fracture templates, branch fracture templates, and complex fracture templates of different sizes (such as different fracture widths and fracture lengths). The fracture template is used to simulate fractures of corresponding types and sizes. For example, before displacement, when constructing a simulated formation, at least one fracture template can be selected according to experimental parameters, the fracture template can be set at the corresponding position of the cylinder, proppant can be added to the fracture template cavity, and then the fracture template can be taken out to construct a corresponding fracture in the simulated formation. Figure 5 As shown in the figure, fracture filling can be omitted, such as filling the formation outside the independent screen, or gravel filling can be performed outside the screen; different fracture models can also be used to construct different fractures, such as Figure 5 Double-wing cracks, single-wing cracks, small-size cracks, complex cracks, multi-layer cracks, multi-branch cracks, etc. Among them, multi-layer cracks can be combined Figure 6 As shown, different cracks are constructed in the upper and lower layers using different crack templates, thereby forming multiple layers of cracks. The present embodiment does not limit the specific crack parameters, for example, the crack width can be 5 to 30 mm, the crack length can be 100 to 800 mm, and so on.

[0070] Figure 7 The flow chart of a method for detecting the performance of a fracture filling provided by an embodiment of the present application is shown. The method for detecting the performance of a fracture filling provided by an embodiment of the present application is executed based on the above-mentioned fracture filling performance detection system.

[0071] Specifically, if Figure 7 As shown, the method includes the following steps:

[0072] Step S701: Fill the fracturing and filling simulation device according to preset simulation parameters.

[0073] The predicted simulation parameters are related parameters of the current experiment, including well type parameters, single-layer / multi-layer mining parameters, fracture parameters, formation physical property parameters, sand control parameters, etc.

[0074] During the specific implementation, a simulated wellbore is selected according to the preset well type in the preset simulation parameters and assembled into the fracturing and filling simulation device. Furthermore, when the current multi-layer production simulation is determined based on the single-layer / multi-layer production parameters, spacers are inserted between the wellbore short sections.

[0075] Prepare formation materials based on formation physical properties and, in conjunction with the sand control method being simulated, load the fracturing and packing simulator with the appropriate materials. Ensure that the prepared formation materials align with the simulated formation's parameters, including sand particle size distribution, mud content, and uniformity coefficient. Ensure that the simulated formation's porosity, permeability, and other parameters, formed after the composite sand and binder are mixed and consolidated, are consistent with the simulated formation's parameters. Sand control methods include: no sand control, independent screen sand control, gravel pack sand control, screen + gravel pack sand control, and fracturing and pack sand control. In the absence of sand control measures, a perforated pipe is used in the simulated wellbore, and composite formation sand is directly filled between the simulated wellbore and the barrel to simulate the formation. In the independent screen sand control condition, a screen is used, and the space between the screen and the barrel is filled with a simulated formation. In the gravel pack sand control condition, the simulated wellbore is a screen inside, and a layer of proppant particles is first filled outside as a sand control layer, and the space between the gravel layer and the barrel is filled with a simulated formation, where the gravel packing layer thickness is 10-50mm. In the screen + gravel pack sand control condition, a layer of proppant is first filled outside the screen as a sand control layer, and the space between the gravel layer and the barrel is filled with a simulated formation. In the fracturing filling condition, a fracture template is selected according to the preset fracture parameters, and the fracture template is placed at a preset position in the fracturing filling simulation device, and proppant is filled into the fracture template cavity. The proppant in the fracture can be selected according to actual needs and can include ceramsite, quartz sand, and other functional particles. Ceramic granules in proppant materials can be divided into ultra-light ceramsite, light ceramsite, medium ceramsite, heavy ceramsite (depending on the density range 1.0-3.0g / cm 3 ). Ceramic aggregate and quartz sand in proppant materials can be divided into hydrophobic coated ceramic aggregate and pre-consolidated coated ceramic aggregate according to their functions. Other functional particles in proppant materials include self-suspending proppants, in-situ forming proppants, expandable proppants, etc. The particle size range of commonly used proppant materials is 0.1-1.2mm, and after filling, sand control layers with different sand retaining accuracy are formed. Among them, hydrophobic coated ceramic aggregate is preferably used as the main material, and the functional ceramic aggregate is filled into the crack to analyze the fracturing filling effect.

[0076] In an optional embodiment, the simulated formation fluid can be charged into the fracturing and filling simulation device all at once, or it can be charged using a fluid injection device. When charging using the fluid injection device, the reservoir production fluid is prepared using clean water and chemical reagents, or the simulated formation fluid is generated using formation oil and water, and then injected into the fracturing and filling simulation device.

[0077] Step S702: After filling is completed, the control device controls the fluid injection device to inject the displacement fluid into the fracturing filling simulation device.

[0078] Optionally, the fluid injection device can be pre-activated to inject clean water to test the tightness of the entire system. The post-control device controls the fluid injection device to inject the displacement fluid into the fracturing and filling simulation device. Alternatively, the pump flow rate can be gradually increased according to experimental settings to test the device pipeline friction loss at different flow rates, which can be used to adjust the permeability calculation later.

[0079] In step S703, the control device obtains the injection fluid flow rate, inlet pressure, outlet pressure, solid output amount, liquid output amount, and liquid output density; and calculates the sand control performance index and / or production increase performance index based on the injection fluid flow rate, inlet pressure, outlet pressure, solid output amount, liquid output amount, and liquid output density.

[0080] Finally, the reservoir physical properties, formation sand characteristics, production system, oil and gas well type, sand control method, fracture morphology, filling particle properties and other parameters of this simulation process are recorded and correlated with the calculated performance indicators to provide a basis for subsequent analysis.

[0081] It can be seen that the fracturing filling performance detection method provided in the embodiment of the present application first fills the fracturing filling simulation device according to the simulation parameters so that the filling result meets the simulation parameter requirements, and then starts the fluid injection device for displacement, and finally calculates the fracturing filling performance detection result based on various sensor indicators, thereby improving the performance detection accuracy and detection efficiency of fracturing filling.

[0082] It should be noted that, in the present invention, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not represent any actual relationship or order between the entities or operations.

[0083] The illustrations provided herein are merely schematic illustrations of the basic concept of the present invention. The illustrations only show components relevant to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be varied arbitrarily, and the component layout may also be more complex.

[0084] The "connection" in the present invention includes both direct connection and indirect connection, such as connection through some active devices, passive devices or electrically conductive media; it may also include connection through other active devices or passive devices on the basis of achieving the same or similar functional purposes as is well known to those skilled in the art, such as connection through circuits or components such as switches and follower circuits.

[0085] The description and implementation of the present application herein is illustrative and not intended to limit the scope of the present application. The effects or advantages of the embodiments described in the examples can not be achieved in the examples due to various factors, and the description of the effects or advantages is not intended to limit the examples. Variations and modifications of the disclosed examples can be possible, and alternative and equivalent means for effecting the described examples can be known to those of ordinary skill in the art. It will be apparent to those of ordinary skill in the art that the present application can be implemented in other forms, structures, arrangements, proportions, and with other components, materials, and methodologies, without departing from the spirit or essential characteristics of the present application. Other variations and modifications of the disclosed examples can be made without departing from the scope and spirit of the application.

[0086] In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application can be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been described in detail in order to not obscure the understanding of this description.

[0087] Similarly, it is to be understood that the mechanical details of the application that have been described above in the context of the example embodiments of the application are intended to illustrate and not limit the various aspects of the present application. Accordingly, although specific embodiments have been illustrated and described herein, it should be appreciated that any arrangement which is calculated to achieve the same or similar result can be substituted for the specific embodiments shown. This disclosure is intended to cover any and all adaptations or variations of various embodiments of the application. Therefore, it is manifestly intended that this application be limited only by the following claims and equivalents thereof.

[0088] Those of skill in the art will understand that modifications to the modules of the devices in the embodiments can be made and that the modules can be placed in more than one device in the embodiments. The modules or units or components in the embodiments can be combined into a single module or unit or component and further can be divided into more modules or units or components. In addition, any combination of the features and / or processes or units in the present disclosure (including accompanying claims, abstract and drawings), and any method or device so disclosed, can be applied to any one or more of the embodiments of the disclosure, individually or in any combination. Unless otherwise stated, each feature disclosed in the specification (including accompanying claims, abstract and drawings) can be replaced by alternative features that serve the same, equivalent or similar purpose. The disclosure of a single or a combination of particular features does not exclude other particular features that serve the same, equivalent or similar purpose. For the avoidance of doubt, any feature of the disclosure that is explicitly disclosed in connection with one embodiment, or aspect, of the disclosure can also be used in connection with another embodiment, or aspect, of the disclosure, even if it is not specifically stated that way.

[0089] The various component embodiments of the present application can be implemented in hardware, or in a software module running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or digital signal processor (DSP) can be used in practice to implement some or all of the functions of some or all of the components according to the embodiments of the present application. The application can also be implemented as a device or apparatus program (e.g., computer program and computer program product) for performing a part or all of the methods described herein. Such a program implementing the present application can be stored on a computer-readable medium, or can have the form of one or more signals. Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

Claims

1. A fracturing filling performance detection system, characterized in that: include: Fluid injection device, flow meter, first pressure gauge, fracturing and filling simulation device, second pressure gauge, filter, metering tank, density meter and control device; Wherein, the fluid injection device injects the displacement fluid into the fracturing and filling simulation device through a pipeline; The flow meter is set in the pipeline between the fluid injection device and the fracturing filling simulation device to detect the flow rate of the injected fluid; The first pressure gauge is provided in the pipeline between the fluid injection device and the fracturing filling simulation device, and is used to detect the inlet pressure; The fracturing and filling simulation device is used to simulate different fracturing and filling scenarios and output the output to the filter; The second pressure gauge is provided in the pipeline between the fracturing filling simulation device and the filter, and is used to detect the outlet pressure; The filter is used to filter out and store solid output from the output of the fracturing and filling simulation device, measure the amount of solid output, and transfer the filtered liquid output to a metering tank; The metering tank is used to measure the amount of liquid output; The density meter is installed in the pipeline between the filter and the metering tank to detect the density of the liquid output flowing into the metering tank; The control device is respectively communicated with the fluid injection device, the flow meter, the first pressure gauge, the second pressure gauge, the density meter, the filter, and the metering tank, and is used to control the fluid injection of the fluid injection device; and obtain the injected fluid flow, inlet pressure, outlet pressure, solid output amount, liquid output amount and liquid output density; and calculate the sand control performance index and / or the production increase performance index based on the injected fluid flow, inlet pressure, outlet pressure, solid output amount, liquid output amount and liquid output density.

2. The fracturing filling performance detection system according to claim 1, characterized in that: The fluid injection device includes: a liquid storage tank, a liquid injection pump, an air pump and a mixing tank; The injection pump is connected to the liquid storage tank and is used to pump the liquid in the liquid storage tank into the mixing tank; The air pump is used to pump gas into the mixing tank; The mixing tank is used to mix liquid and gas to obtain displacement fluid.

3. The fracturing filling performance detection system according to claim 1, characterized in that: The fracturing and filling simulation device includes: A cylinder wall with at least one inlet, a cylinder bottom with at least one outlet, a cylinder cover, and a simulated wellbore arranged in the cylinder; wherein the simulated wellbore can allow fluid to penetrate.

4. The fracturing filling performance detection system according to claim 3, characterized in that: The simulated wellbore includes: a screen tube capable of allowing fluid to penetrate; Alternatively, the simulated wellbore includes: a screen pipe capable of allowing fluid to penetrate, and a casing sleeved on the outside of the screen pipe, wherein at least one perforation is formed on the casing.

5. The fracturing filling performance detection system according to claim 4, characterized in that: The simulated wellbore includes at least one of the following well types: Vertical well simulation wellbore, directional well simulation wellbore, horizontal well simulation wellbore, and branch well simulation wellbore.

6. The fracturing filling performance detection system according to claim 3, characterized in that: The cylinder wall is composed of a plurality of cylinder wall short sections; a partition is inserted between at least one group of adjacent cylinder wall short sections.

7. The fracturing filling performance detection system according to claim 1, characterized in that: The fracturing filling performance detection system further includes at least one of the following fracture templates: Single-wing crack templates, double-wing crack templates, branch crack templates, and complex crack templates of different sizes.

8. A method for testing fracturing filling performance, characterized in that: The fracturing filling performance detection method is performed based on the fracturing filling performance detection system according to any one of claims 1 to 7, and the method comprises: Fill the fracturing and filling simulation device according to the preset simulation parameters; After filling is completed, the control device controls the fluid injection device to inject the displacement fluid into the fracturing filling simulation device; The control device obtains the injection fluid flow rate, inlet pressure, outlet pressure, solid output amount, liquid output amount and liquid output density; and calculates the sand control performance index and / or production increase performance index based on the injection fluid flow rate, inlet pressure, outlet pressure, solid output amount, liquid output amount and liquid output density.

9. The method for detecting fracturing filling performance according to claim 8, characterized in that: Filling the simulated formation into the fracturing filling simulation device according to the preset simulation parameters includes: According to the preset well type, select the simulated wellbore.

10. The method for detecting fracturing filling performance according to claim 8, characterized in that: Filling the simulated formation into the fracturing filling simulation device according to the preset simulation parameters includes: A fracture template is selected according to preset fracture parameters, the fracture template is placed at a preset position in a fracturing and filling simulation device, and proppant is filled into the cavity of the fracture template.

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