Device for measuring influence of surfactant on permeability of gas reservoir rock

Abstract

The utility model discloses a device for measuring the influence of a surfactant on the permeability of gas reservoir rock, which particularly belongs to the field of petroleum and comprises an experimental cavity, and clamping devices are connected to two sides of the middle of the experimental cavity in an embedded manner; a sample clamp is fixedly connected to one side of the interior of the clamping device, and a fixing valve is movably connected to one side of the surface of the clamping device. When the device is used, the experiment cavity serves as a main body, the sample clamp is fixed through the clamping device, the stability of an experiment is ensured, the heating system can simulate the formation temperature, the accuracy of the experiment is improved, and the high-pressure gas source provides stable high-pressure gas through the pressure regulating valve; the stratum condition simulation permeability measuring system is combined with a pressure sensor and a flow meter to accurately measure permeability change, the data acquisition and processing system records and analyzes data in real time, a visual window facilitates observation of an experiment process and ensures intuition of an experiment, and the safety protection system and the temperature sensor ensure safety and temperature control precision of the experiment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of petroleum, more specifically, the utility model relates to the device of determining the influence of surfactant on gas reservoir rock permeability. BACKGROUND

[0002] In the development process of low-permeability condensate gas reservoir, the liquid lock damage mechanism is mainly liquid phase aggregation, when the permeability and initial water saturation are lower, the rock surface hydrophilicity is stronger, the interfacial tension is greater, and the liquid phase aggregation is more serious, there are many current liquid lock damage removal technologies, and different liquid lock removal methods have different influences on the reservoir;

[0003] In oil and gas exploration and development, the permeability of gas reservoir rock is one of the key factors affecting oil and gas production capacity, and surfactant is an important means to improve oil and gas production effect, and its influence on reservoir rock permeability is concerned, however, the prior art lacks a device for accurately determining the effect of surfactant, resulting in slow progress of related research;

[0004] Therefore, the device for determining the influence of surfactant on gas reservoir rock permeability is proposed to solve the above problems. INNOVATION CONTENT

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a device for determining the influence of surfactant on gas reservoir rock permeability to solve the problems in the above background art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: the device for determining the influence of surfactant on gas reservoir rock permeability, including experimental cavity, the middle part of experimental cavity both sides is connected with clamping device, the inside one side of clamping device is fixedly connected with sample clamp, the surface one side of clamping device is movably connected with fixed valve, the top middle part of experimental cavity is embeddedly connected with heating system, one side of heating system is connected with high pressure interface through lapping, one side of high pressure interface is fixedly connected with high pressure gas source, the middle part of high pressure gas source is embeddedly connected with pressure regulating valve, the bottom of experimental cavity is fixedly connected with permeability measuring system, one side of permeability measuring system is embeddedly connected with pressure sensor, the middle part of pressure sensor is embeddedly connected with flowmeter, one side of pressure sensor is connected with data acquisition and processing system through lapping, one side of data acquisition and processing system is connected with control system through lapping, one side of heating system is connected with safety protection system through lapping, the other side of heating system is connected with surfactant system through lapping, one side of heating system is connected with temperature sensor through lapping.

[0007] As a further scheme of the utility model, the front surface of the experimental cavity is embeddedly connected with a visual window.

[0008] As a further scheme of the utility model, the outer wall of the sample clamp is connected with the inner wall of the experimental cavity, and is located at the inner middle part of the experimental cavity, and is connected and fixed through the clamping device arranged on the surface.

[0009] As a further scheme of the utility model, the permeability measuring system is located at the bottom part of the experimental cavity, and is connected with the pressure sensor, the data acquisition and processing system and the control system to form a monitoring and observing mechanism.

[0010] As a further scheme of the utility model, the high-pressure gas source and the high-pressure interface are located at the top part of the experimental cavity, form a fixed structure, and the middle part is adjusted and controlled by the pressure regulating valve.

[0011] As a further scheme of the utility model, the safety protection system is located between the experimental cavity and the heating system, forms a protection structure, and the safety protection system is also located between the experimental cavity and the high-pressure gas source.

[0012] The technical effects and advantages of the utility model are as follows:

[0013] Compared with the prior art, the device for determining the influence of the surfactant on the permeability of the gas reservoir rock in use has the experimental cavity as the main body, fixes the sample clamp through the clamping device, ensures the stability of the experiment, the heating system can simulate the formation temperature, improves the accuracy of the experiment, the high-pressure gas source provides stable high-pressure gas through the pressure regulating valve, simulates the formation condition, the permeability measuring system is combined with the pressure sensor and the flowmeter, accurately measures the permeability change, the data acquisition and processing system records and analyzes the data in real time, the visual window facilitates the observation of the experimental process, ensures the intuitiveness of the experiment, and the safety protection system and the temperature sensor ensure the safety and temperature control accuracy of the experiment. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the overall structural schematic view of the utility model.

[0015] Fig. 2 It is the overall structural schematic view of the clamping device of the utility model.

[0016] Fig. 3 It is the overall experimental operation process structural schematic view of the utility model.

[0017] The attached figures are labeled as follows: 1. Experimental chamber; 2. Clamping device; 3. Sample clamp; 4. Fixing valve; 5. Visualization window; 6. High-pressure gas source; 7. High-pressure interface; 8. Heating system; 9. Permeability measurement system; 10. Pressure sensor; 11. Flow meter; 12. Surfactant system; 13. Temperature sensor; 14. Safety protection system; 15. Pressure regulating valve; 16. Data acquisition and processing system; 17. Control system. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1

[0020] As attached Figs. 1-3 The apparatus shown for determining the effect of surfactants on the permeability of gas reservoir rocks includes an experimental chamber 1. Clamping devices 2 are embedded and connected to both sides of the middle portion of the experimental chamber 1. A sample clamp 3 is fixedly connected to one side of the inside of the clamping device 2, and a fixed valve 4 is movably connected to one side of the surface of the clamping device 2. A heating system 8 is embedded and connected to the middle of the top of the experimental chamber 1. A high-pressure interface 7 is connected to one side of the heating system 8, and a high-pressure gas source 6 is fixedly connected to one side of the high-pressure interface 7. A pressure regulating valve 15 is embedded and connected to the middle of the high-pressure gas source 6. A permeability measuring device is fixedly connected to the bottom of the experimental chamber 1. The permeability measurement system 9 has a pressure sensor 10 embedded on one side, a flow meter 11 embedded in the middle of the pressure sensor 10, a data acquisition and processing system 16 connected to one side of the pressure sensor 10, a control system 17 connected to one side of the data acquisition and processing system 16, a safety protection system 14 connected to one side of the heating system 8, a surfactant system 12 connected to the other side of the heating system 8, a temperature sensor 13 connected to one side of the heating system 8, and a visualization window 5 embedded on the front surface of the experimental chamber 1.

[0021] Wherein: the experimental cavity 1 body as the main body, through the clamping device 2 fixed sample clamp 3, ensure the stability of the experiment, heating system 8 can simulate formation temperature, improve the accuracy of the experiment, high pressure gas source 6 through pressure regulating valve 15 provides stable high pressure gas, simulate formation condition permeability measurement system 9 combination pressure sensor 10 and flowmeter 11, accurately measure the permeability change, data acquisition and processing system 16 then real-time record and analyze data, visual window 5 facilitate the observation of the experimental process, ensure the intuitiveness of the experiment, safety protection system 14 and temperature sensor 13 then guarantee the safety and temperature control accuracy of the experiment, the advantages of the device are that it can simulate the real formation condition, accurately determine the influence of surfactant on permeability, realize the real-time acquisition and processing of data, improve the experimental efficiency and accuracy, and the structure design is reasonable and easy to operate.

[0022] The working process of the utility model is as follows:

[0023] The device for determining the influence of surfactant on the permeability of gas reservoir rock in use, the experimental cavity 1 body as the main body, through the clamping device 2 fixed sample clamp 3, ensure the stability of the experiment, heating system 8 can simulate formation temperature, improve the accuracy of the experiment, high pressure gas source 6 through pressure regulating valve 15 provides stable high pressure gas, simulate formation condition permeability measurement system 9 combination pressure sensor 10 and flowmeter 11, accurately measure the permeability change, data acquisition and processing system 16 then real-time record and analyze data, visual window 5 facilitate the observation of the experimental process, ensure the intuitiveness of the experiment, safety protection system 14 and temperature sensor 13 then guarantee the safety and temperature control accuracy of the experiment, the advantages of the device are that it can simulate the real formation condition, accurately determine the influence of surfactant on permeability, realize the real-time acquisition and processing of data, improve the experimental efficiency and accuracy, and the structure design is reasonable and easy to operate, which is the working process and working principle of the device.

[0024] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0025] Secondly: the utility model discloses the embodiment of the drawing, only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, in the case of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;

[0026] Finally: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. Device for determining the effect of surfactants on the permeability of the rock of a gas reservoir, comprising a test chamber (1), characterized in that: The middle part of the experimental cavity (1) is embedded with clamping device (2) on both sides; The inside of the clamping device (2) is fixedly connected with a sample clamp (3), and the surface of the clamping device (2) is movably connected with a fixed valve (4). The middle part of the top of the experimental cavity (1) is embedded with a heating system (8), one side of which is connected with a high pressure interface (7). The high pressure interface (7) is fixedly connected with a high pressure gas source (6) on one side. The middle part of the high pressure gas source (6) is embedded with a pressure regulating valve (15). The bottom of the experimental cavity (1) is fixedly connected with a permeability measuring system (9). One side of the permeability measuring system (9) is embedded with a pressure sensor (10). The middle part of the pressure sensor (10) is embedded with a flowmeter (11). One side of the pressure sensor (10) is connected with a data acquisition and processing system (16). One side of the data acquisition and processing system (16) is connected with a control system (17). The inside of the heating system (8) is connected with a safety protection system (14) on one side. The other side of the heating system (8) is connected with a surfactant system (12). The inside of the heating system (8) is connected with a temperature sensor (13) on one side.

2. The apparatus of claim 1, wherein: The front surface of the experimental cavity (1) is embedded with a visualization window (5).

3. The apparatus of claim 1, wherein: The outer wall of the sample clamp (3) is connected with the inner wall of the experimental cavity (1), which is located in the middle part of the experimental cavity (1), and is connected with the clamping device (2) on the surface.

4. The apparatus of claim 1, wherein: The permeability measuring system (9) is located at the bottom of the experimental cavity (1), which is connected with the pressure sensor (10), the data acquisition and processing system (16) and the control system (17) to form a monitoring and observation mechanism.

5. The apparatus of claim 1, wherein: The high pressure gas source (6) and the high pressure interface (7) are located at the top of the experimental cavity (1) to form a fixed structure, and the middle part is adjusted and controlled by the pressure regulating valve (15).

6. The apparatus of claim 1, wherein: The safety protection system (14) is located between the experimental cavity (1) and the heating system (8) to form a protection structure, and the safety protection system (14) is also located between the experimental cavity (1) and the high pressure gas source (6).

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