Test bed for controlling gas cut monitoring parameters

Abstract

The invention relates to a test bed for controlling gas cut monitoring parameters, which comprises an experiment system main body module, a gas supply module and a monitoring and control module, and is characterized in that the experiment system main body module comprises an experiment rack, a transparent pipe and a simulation drill rod, the transparent pipe and the simulation drill rod are both mounted on the experiment rack, and the transparent pipe sleeves the simulation drill rod; a through hole is formed in the bottom surface of the experiment rack; a one-way valve is mounted at the bottom of the through hole; the gas supply module is connected with the through hole through a gas pipe; the monitoring and control module is connected with the gas supply module and used for controlling the gas supply amount of the gas supply module; the gas cut identification can be timely and effectively realized, so that the overflow phenomenon can be early warned, and the safety of deepwater drilling operation can be guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of gas intrusion monitoring, and in particular relates to a test bench for controlling gas intrusion monitoring parameters. Background Art

[0002] Oil and natural gas have become indispensable energy sources for the development of human society. In recent years, the demand for oil and natural gas has been increasing. After long-term large-scale development, the expansion of production of terrestrial and shallow-water oil and gas resources has been restricted, and deep-water oil and gas resources have become a key source for maintaining global energy supply.

[0003] The potential rich oil and gas reserves in the deep sea can provide a reliable energy supply to meet the growing global energy demand. The development of deepwater oil and gas resources is also accompanied by some challenges, including technical difficulties, environmental protection issues and safety risks. Among them, overflow is the biggest potential risk in the exploration and development of deepwater oil and gas resources; and gas invasion refers to the process in which gas invades the drilling fluid, causing the performance of the drilling fluid to deteriorate. Gas invasion will reduce the density of the drilling fluid and increase the viscosity. In severe cases, it may cause accidents such as blowouts and well collapse.

[0004] It can be seen that if the gas invasion phenomenon cannot be discovered and controlled in time, it will easily lead to a decrease in the density of the drilling fluid and gradually fail to balance the formation pressure, which may lead to a blowout (well kick) accident in severe cases. However, in the field of downhole gas invasion monitoring, there is a problem that the movement state of the gas in the pipe is difficult to analyze, resulting in the inability to make early warnings of overflow phenomena in a timely and effective manner, making it difficult to ensure the safety of deepwater drilling operations. Summary of the invention

[0005] In view of at least one of the problems in the above-mentioned prior art, the purpose of the present invention is to provide a test bench for controlling gas intrusion monitoring parameters, so that gas intrusion identification can be realized in a timely and effective manner, thereby making early warning of overflow phenomena, which is beneficial to ensuring the safety of deep-water drilling operations.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A test bench for controlling gas intrusion monitoring parameters, comprising: The main module of the experimental system includes an experimental bench, a transparent tube and a simulated drill rod, wherein the transparent tube and the simulated drill rod are both installed on the experimental bench, and the transparent tube is sleeved on the outside of the simulated drill rod; a through hole is opened on the bottom surface of the experimental bench, and a one-way valve is installed at the bottom of the through hole; A gas supply module connected to the through hole via a gas pipe; The monitoring and control module is connected to the gas supply module and is used to control the gas supply volume of the gas supply module.

[0007] Preferably, an annular boss is provided on the bottom surface of the experimental bench, and the transparent tube is embedded and connected in the annular boss.

[0008] Preferably, a groove is provided on the bottom surface of the experimental bench, and a protrusion is provided on the bottom of the simulated drill rod, and the protrusion is embedded and connected in the groove. Preferably, at least two grooves are provided, and the plurality of grooves are arranged concentrically with the transparent tube; the innermost groove is provided in a hole shape, and the remaining grooves are provided in a ring shape.

[0009] Preferably, the number of the through holes is at least two, and the plurality of through holes are evenly distributed along the circumference.

[0010] Preferably, the plurality of through holes are evenly distributed along at least two concentric circles, and the circles along which the through holes are distributed are concentric with the transparent tube.

[0011] Preferably, a cavity is arranged inside the simulated drill rod, and a handle is arranged on the top.

[0012] Preferably, the gas supply module comprises an air compressor and a gas storage tank, the air compressor is connected to the gas storage tank, and the gas storage tank is connected to the through hole via the air pipe.

[0013] Preferably, a gas flow control valve and a flow meter are installed on the gas pipe, and the gas flow control valve and the flow meter are respectively connected to the monitoring and control module.

[0014] Preferably, the monitoring and control module comprises a PC, and the PC is connected to the gas flow control valve and the flow meter respectively.

[0015] The present invention adopts the above technical solution, which has the following advantages: 1. The test bench for controlling gas intrusion monitoring parameters provided by the present invention can simulate local watertight pipe gas intrusion situations, and can timely and effectively realize gas intrusion identification, thereby making early warnings for overflow phenomena, which is beneficial to ensuring the safety of deep-water drilling operations; and compared with traditional gas intrusion monitoring experimental systems, it has the advantages of compact structure, small size, light weight, low cost, easy installation, low maintenance difficulty and easy transportation.

[0016] 2. In the test bench for controlling gas intrusion monitoring parameters provided by the present invention, the transparent tube and the simulated drill rod can be disassembled and installed with the experimental bench frame to form a split structure; if the material of the transparent tube needs to be changed, the transparent tube of other materials can be embedded and connected in the annular boss; if the position of the simulated drill rod needs to be changed, the replacement protrusion can be inserted into the position in the groove, which is convenient for adjusting the material of the transparent tube and the eccentricity of the simulated drill rod according to different experimental requirements; if the air intake position needs to be adjusted, the air pipe can be connected to the through holes at other positions; thereby improving flexibility, expanding the scope of application, and meeting diverse experimental requirements.

[0017] 3. The test bench for controlling gas intrusion monitoring parameters provided by the present invention can accurately control the preset experimental parameters, and can control the gas flow control valve through a PC according to the experimental setting requirements, thereby facilitating the precise setting of the experimental parameters, ensuring stable gas supply, and effectively improving the experimental operation efficiency and the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a test bench for controlling gas intrusion monitoring parameters provided in Example 1 of the present invention.

[0019] Figure 2 It is a structural diagram of the main module of the experimental system of the test bench for controlling gas intrusion monitoring parameters provided in the first embodiment of the present invention.

[0020] Figure 3 It is a cross-sectional view of a main module of an experimental system of a test bench for controlling gas intrusion monitoring parameters provided in the first embodiment of the present invention.

[0021] Figure 4 1 is a top view of a test bench for controlling gas intrusion monitoring parameters provided in Embodiment 1 of the present invention.

[0022] Markings in the accompanying drawings: 1 is the main module of the experimental system, 110 is the experimental bench, 111 is the through hole, 112 is the annular boss, 113 is the groove, 120 is the transparent tube, 130 is the simulated drill rod, 131 is the protrusion, 132 is the cavity, 133 is the handle, 2 is the gas supply module, 210 is the one-way valve, 220 is the air pipe, 221 is the gas flow control valve, 222 is the flow meter, 230 is the air compressor, 240 is the gas storage tank, 3 is the monitoring and control module, and 310 is the PC. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the system or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "assembly", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The present invention provides a test bench for controlling gas intrusion monitoring parameters, wherein gas is transported to a transparent tube of a main module of an experimental system through a gas supply module, and the gas flow is controlled through a monitoring and control module, thereby facilitating the execution of gas intrusion monitoring experiments and research work, and being able to timely and effectively identify gas intrusion, thereby providing an early warning of overflow phenomena, and facilitating the safety of deepwater drilling operations.

[0027] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] Example Please refer to Figures 1 to 4 The present embodiment provides a test bench for controlling gas intrusion monitoring parameters, including an experimental system main module 1, a gas supply module 2 and a monitoring and control module 3. The experimental system main module 1 includes an experimental bench 110, a transparent tube 120 and a simulated drill rod 130. The transparent tube 120 and the simulated drill rod 130 are both installed on the experimental bench 110, and the transparent tube 120 is sleeved on the outside of the simulated drill rod 130; a through hole 111 is opened on the bottom surface of the experimental bench 110, and a one-way valve 210 is installed at the bottom of the through hole 111; the gas supply module 2 is connected to the through hole 111 through an air pipe 220; the monitoring and control module 3 is connected to the gas supply module 2 for controlling the gas supply volume of the gas supply module 2.

[0029] In the test bench for controlling gas intrusion monitoring parameters of this embodiment, the one-way valve 210 operates the one-way flow of gas, thereby preventing the liquid in the transparent tube 120 of the main module 1 of the experimental system from flowing back into the air pipe 220, while ensuring that gas can be introduced into the transparent tube 120 from the gas supply module 2 through the air pipe 220 when necessary.

[0030] When in use, the gas supply module 2 transports gas to the transparent tube 120 of the main module 1 of the experimental system through the gas pipe 220, and controls the gas flow through the monitoring and control module 3, so as to perform gas intrusion monitoring experiments and research work, which is conducive to timely and effective gas intrusion identification, early warning of overflow phenomena, and ensuring the safety of deep-water drilling operations.

[0031] Please refer to Figures 1 to 3 The transparent tube 120 can be detachably mounted on the experimental bench frame 110 to form a split structure, so that the overall configuration of the test bench can be adjusted according to the experimental requirements. For example, the transparent tube 120 can be set to a glass tube, a transparent plastic tube or other transparent tubes, thereby achieving both portability and enhancing applicability and expanding the scope of experimental application. The glass tube can be specifically an organic glass tube.

[0032] Please refer to Figures 1 to 4 Specifically, an annular boss 112 is provided on the bottom surface of the experimental bench 110, and the transparent tube 120 is embedded and connected in the annular boss 112; so that the bottom end of the transparent tube 120 is embedded in the annular boss 110 to achieve fixation.

[0033] The experimental bench 110 can be set as a square, the transparent tube 120 can be set as a round tube, and the annular boss 110 can be set as a circular ring.

[0034] Specifically, a groove 113 is disposed on the bottom surface of the experimental bench 110 , and a protrusion 131 is disposed on the bottom of the simulated drill rod 130 , and the protrusion 131 is embedded and connected in the groove 113 .

[0035] Please refer to Figures 1 to 3 The simulated drill rod 130 can be set as a round rod. The protrusion 131 can be set as a cylinder. The protrusion 131 can be set at the center of the bottom surface of the simulated drill rod 130.

[0036] Please refer to Figure 4 Specifically, at least two grooves 113 are provided, and the plurality of grooves 113 are arranged concentrically with the transparent tube 120; the innermost groove 113 is provided in a hole shape, and the remaining grooves 113 are provided in a ring shape; thereby facilitating fixing the simulated drill rod 130 at different positions of the experimental bench 110, so as to be able to adjust the eccentricity and eccentricity angle of the experimental bench 110.

[0037] The innermost groove 113 may be configured as a circular hole and may be disposed at the center of the top surface of the experimental bench 110. The remaining grooves 113 may be configured as circular rings. The plurality of grooves 113 may be distributed at equal intervals.

[0038] Specifically, at least two through holes 111 are provided, and the multiple through holes 111 are evenly distributed along the circumference; a one-way valve 210 is installed at the bottom of each through hole 111, and when the air intake position needs to be adjusted, the air pipe 220 can be connected to the through hole 111 at other positions.

[0039] Specifically, the plurality of through holes 111 are evenly distributed along at least two concentric circles, and the circles on which the through holes 111 are distributed are concentric with the transparent tube 120. The plurality of circles on which the through holes 111 are distributed may be distributed at equal intervals.

[0040] For example, the innermost groove 113 is set at the center point of the test bench 110. With the center point of the test bench 110 as the center of the circle, 8 through holes 111 evenly distributed along the circumference are set at a radius of 35 mm, 24 through holes 111 evenly distributed along the circumference are set at radii of 140 mm and 175 mm, and 36 through holes 111 evenly distributed along the circumference are set at a radius of 210 mm. The annular boss 112 is set outside the through hole 111 and the groove 113.

[0041] Please refer to Figures 1 to 3 Specifically, a cavity 132 is provided inside the simulated drill rod 130 , and a handle 133 is provided on the top.

[0042] Please refer to Figure 1 Specifically, the gas supply module 2 includes an air compressor 230 and a gas storage tank 240 , the air compressor 230 is connected to the gas storage tank 240 , and the gas storage tank 240 is connected to the through hole 111 through the air pipe 220 .

[0043] Specifically, a gas flow control valve 221 and a flow meter 222 are installed on the gas pipe 220, and the gas flow control valve 221 and the flow meter 222 are respectively connected to the monitoring and control module 3. The gas flow control valve 221 is used to control the intake air volume.

[0044] Specifically, the monitoring and control module 3 includes a PC 310 , and the PC 310 is connected to the gas flow control valve 221 and the flow meter 222 respectively.

[0045] The PC 310 may be installed with control software, which is a prior art product software. The control software receives the current gas flow value monitored and displayed by the flow meter 222. When the indication of the flow meter 222 is different from the preset output gas flow value, the control software sends a signal to the gas flow control valve 221 to automatically adjust the opening size of the gas flow control valve 221 until the indication of the flow meter 222 reaches the preset output gas flow value, thereby ensuring stable gas supply.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A test bench for controlling gas intrusion monitoring parameters, characterized in that: include: The experimental system main body module (1) comprises an experimental bench (110), a transparent tube (120) and a simulated drill rod (130), wherein the transparent tube (120) and the simulated drill rod (130) are both mounted on the experimental bench (110), and the transparent tube (120) is sleeved on the outside of the simulated drill rod (130); a through hole (111) is formed on the bottom surface of the experimental bench (110), and a one-way valve (210) is installed at the bottom of the through hole (111); A gas supply module (2) connected to the through hole (111) via a gas pipe (220); The monitoring and control module (3) is connected to the gas supply module (2) and is used to control the gas supply volume of the gas supply module (2).

2. The test bench for controlling gas intrusion monitoring parameters according to claim 1 is characterized in that: An annular boss (112) is provided on the bottom surface of the experimental bench (110), and the transparent tube (120) is embedded and connected in the annular boss (112).

3. The test bench for controlling gas intrusion monitoring parameters according to claim 2 is characterized in that: A groove (113) is provided on the bottom surface of the experimental bench (110), and a protrusion (131) is provided on the bottom of the simulated drill rod (130), and the protrusion (131) is embedded and connected in the groove (113).

4. The test bench for controlling gas intrusion monitoring parameters according to claim 3 is characterized in that: At least two grooves (113) are provided, and the plurality of grooves (113) are arranged concentrically with the transparent tube (120); the innermost groove (113) is provided in a hole shape, and the remaining grooves (113) are provided in a ring shape.

5. The test bench for controlling gas intrusion monitoring parameters according to claim 4 is characterized in that: The through holes (111) are arranged to be at least two, and the plurality of through holes (111) are evenly distributed along the circumference.

6. The test bench for controlling gas intrusion monitoring parameters according to claim 5, characterized in that: The plurality of through holes (111) are evenly distributed along at least two concentric circles, and the circles along which the through holes (111) are distributed are concentric with the transparent tube (120).

7. The test bench for controlling gas intrusion monitoring parameters according to claim 1, characterized in that: The simulated drill rod (130) has a cavity (132) disposed inside and a handle (133) disposed on the top.

8. The test bench for controlling gas intrusion monitoring parameters according to any one of claims 1 to 7, characterized in that: The gas supply module (2) comprises an air compressor (230) and a gas storage tank (240); the air compressor (230) is connected to the gas storage tank (240); and the gas storage tank (240) is connected to the through hole (111) via the gas pipe (220).

9. The test bench for controlling gas intrusion monitoring parameters according to claim 8, characterized in that: A gas flow control valve (221) and a flow meter (222) are installed on the gas pipe (220), and the gas flow control valve (221) and the flow meter (222) are respectively connected to the monitoring and control module (3).

10. The test bench for controlling gas intrusion monitoring parameters according to claim 9, characterized in that: The monitoring and control module (3) comprises a PC (310), and the PC (310) is connected to the gas flow control valve (221) and the flow meter (222) respectively.

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