Separated flow testing device for hydrogen sulfide detection

Abstract

The invention relates to the technical field of petroleum equipment, in particular to a separated flow testing device for hydrogen sulfide detection. Comprising a device inlet, a gas-liquid mixing pipe, a buffer pipe, a gas-liquid separation cavity, a gas pipe, a liquid pipe, an electromagnetic control valve, a gas detection cavity, a one-way gas valve, a hydrogen sulfide gas detector, a warning lamp, a motor assembly, a crude oil moisture content detector, a liquid detection cavity, a crude oil liquid amount tester and a device outlet. Secondary separation of associated gas and associated liquid in the crude oil can be realized, so that the hydrogen sulfide gas in the associated gas in the crude oil is more accurately detected, and the data detection error of the liquid production capacity of the crude oil is smaller.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum equipment, and in particular to a separate flow testing device for detecting hydrogen sulfide. Background Art

[0002] In the field of crude oil testing, the detection of fluid flow and specific gas (such as hydrogen sulfide) concentration is crucial. Traditional testing methods often require the crude oil flow test and hydrogen sulfide concentration test to be performed separately, which not only increases the complexity of the operation, but may also lead to inaccurate hydrogen sulfide detection due to improper gas sampling and processing. Therefore, the market urgently needs a device that can simultaneously realize crude oil flow testing and hydrogen sulfide concentration detection. Summary of the invention

[0003] In order to solve the above technical problems and realize the above technical features, the present invention adopts the following technical solutions.

[0004] A separate flow test device for hydrogen sulfide detection, comprising a device inlet, a gas-liquid mixing tube, a buffer tube, a gas-liquid separation chamber, an air pipe, a liquid pipe, an electromagnetic control valve, a gas detection chamber, a one-way gas valve, a hydrogen sulfide gas detector, a warning light, a motor assembly, a crude oil water content detector, a liquid detection chamber, a crude oil liquid volume tester, and a device outlet; the device inlet is the entrance for the crude oil mixture to enter the device; the gas-liquid mixing tube includes gas-liquid mixing tube section A and gas-liquid mixing tube section B; the buffer tube includes buffer tube section A and buffer tube section B; the gas-liquid separation chamber includes gas-liquid separation chamber A and gas-liquid separation chamber B; the air pipe includes air pipe section A, air pipe section B, air pipe section C, air pipe section D, and air pipe section E; the liquid pipe includes liquid pipe section A, liquid pipe section B, and liquid pipe section C; the device outlet is the outlet of the crude oil mixture discharge device.

[0005] Furthermore, the electromagnetic control valve is located between section C of the air pipe and the gas detection chamber, and the electromagnetic control valve is used to control the flow of crude oil associated gas into the gas detection chamber; the hydrogen sulfide gas detector is located at the top of the gas detection chamber; the one-way gas valve is located on the side of the gas detection chamber, and the one-way gas valve is used to allow air to enter the gas detection chamber in one direction to achieve stable air pressure in the gas detection chamber; the motor assembly includes a motor and a motor push rod, and the motor controls the motor push rod to achieve the introduction and discharge of gas; the crude oil water content detector is connected to section B of the air pipe, and the crude oil water content detector is used to detect the water content data of the crude oil associated liquid; the liquid detection chamber is connected to section C of the liquid pipe, and the liquid detection chamber is used to temporarily store the crude oil associated liquid to be tested; the crude oil liquid volume tester is located at the top of the liquid detection chamber, and the crude oil liquid volume tester is used to test the instantaneous flow rate and cumulative flow rate of the crude oil associated liquid.

[0006] Furthermore, a warning light is provided on the outside of the hydrogen sulfide gas detector, and the warning light comes on when the hydrogen sulfide gas detector detects that the crude oil associated gas contains hydrogen sulfide gas.

[0007] Furthermore, the crude oil water content detector and the crude oil liquid volume tester are both provided with a liquid crystal display screen.

[0008] Furthermore, the electromagnetic control valve has a timer, which is used to control the opening and closing time of the electromagnetic control valve. The opening and closing time set by the timer is related to the action time of the motor assembly to extract and push out the crude oil associated gas.

[0009] The beneficial effects of the present invention are as follows: when a separate flow test device containing hydrogen sulfide detection is working, crude oil flows into the gas-liquid mixing pipe section A through the device inlet, and the crude oil flows into the buffer pipe section A through the gas-liquid mixing pipe section A. If the crude oil flow rate of the oil well is large, the crude oil will flow into the gas-liquid separation chamber A through the buffer pipe section A and the buffer pipe section B at the same time. The crude oil undergoes the first gas-liquid separation in the gas-liquid separation chamber A, and the crude oil associated liquid flows downward into the liquid pipe section A, and the crude oil associated gas flows upward through the air pipe section A, the air pipe section B, and the air pipe section C, and then passes through the electromagnetic control valve opening. At this time, the motor assembly extracts the crude oil associated gas and the outside air passing through the one-way air valve into the gas detection chamber. If the crude oil associated gas flowing into the gas detection chamber is tested by the hydrogen sulfide gas detector to have hydrogen sulfide gas, the warning light will be on. After completing the hydrogen sulfide gas detection, the electromagnetic control valve is closed, and the crude oil associated gas will be pushed out to the air pipe section D through the motor assembly, and the crude oil associated gas will be discharged through the air pipe section D, the air pipe section E, the gas-liquid mixing pipe section B, and the device outlet. After the crude oil passes through the gas-liquid separation chamber A for the first gas-liquid separation, the crude oil associated liquid flows into the gas-liquid separation chamber B through the liquid pipe section A. If the crude oil associated liquid contains a small amount of gas or bubbles, the crude oil associated liquid completes the second gas-liquid separation in the gas-liquid separation chamber B. After the second gas-liquid separation, the crude oil associated gas flows upward into the gas pipe section B, which is the same as the flow direction of the above-mentioned crude oil associated gas and the process of detecting hydrogen sulfide, so it will not be repeated. After the second gas-liquid separation, the crude oil associated liquid flows downward through the liquid pipe section B. At this time, the crude oil water content detector connected to the liquid pipe section B measures the water content data of the crude oil associated liquid. After completing the water content data detection, the crude oil associated liquid flows into the liquid detection chamber through the liquid pipe section C. At this time, the crude oil liquid volume tester provided on the top of the liquid detection chamber tests the instantaneous flow and cumulative flow data of the crude oil associated liquid. After completing the liquid volume test, the crude oil associated liquid is discharged through the gas-liquid mixing pipe section B and the device outlet. A separate flow test device for hydrogen sulfide detection can achieve secondary separation of associated gas and associated liquid in crude oil through the above-mentioned operation, which not only makes the detection of hydrogen sulfide gas in crude oil associated gas more accurate, but also makes the detection error of crude oil liquid production data smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The present invention is a schematic diagram of the rear view structure of a separate flow test device for hydrogen sulfide detection.

[0011] Figure 2 The present invention is a three-dimensional structural diagram of a separate flow testing device for hydrogen sulfide detection.

[0012] In the figure: 101-device inlet, 102-gas-liquid mixing pipe section A, 103-buffer pipe section A, 104-buffer pipe section B, 105-gas-liquid separation chamber A, 106-gas pipe section A, 107-liquid pipe section A, 108-gas-liquid separation chamber B, 109-gas pipe section B, 110-gas pipe section C, 111-electromagnetic control valve, 112-gas detection chamber, 113-one-way gas valve, 114-hydrogen sulfide gas detector, 115-warning light, 116-motor assembly, 201-gas pipe section D, 202-gas pipe section E, 203-liquid pipe section B, 204-crude oil water content detector, 205-liquid pipe section C, 206-liquid detection chamber, 207-crude oil liquid volume tester, 208-gas-liquid mixing pipe section B, 209-device outlet. DETAILED DESCRIPTION

[0013] The embodiment of the present invention provides a separate flow test device for hydrogen sulfide detection, such as Figure 1 , Figure 2As shown, a separate flow test device for hydrogen sulfide detection includes a device inlet 101, a gas-liquid mixing tube, a buffer tube, a gas-liquid separation chamber, a gas pipe, a liquid pipe, an electromagnetic control valve 111, a gas detection chamber 112, a one-way gas valve 113, a hydrogen sulfide gas detector 114, a warning light 115, a motor assembly 116, a crude oil water content detector 204, a liquid detection chamber 206, a crude oil liquid volume tester 207, and a device outlet 209; the device inlet 101 is the entrance for the crude oil mixture to enter the device; the gas-liquid mixing tube includes the gas-liquid mixing tube A section 102 and the gas-liquid mixing tube B section 208; the buffer tube includes the buffer tube A section 103, the buffer tube B section 104; the gas-liquid separation chamber includes gas-liquid separation chamber A105 and gas-liquid separation chamber B108; the air pipe includes air pipe A section 106, air pipe B section 109, air pipe C section 110, air pipe D section 201, and air pipe E section 202; the liquid pipe includes liquid pipe A section 107, liquid pipe B section 203, and liquid pipe C section 205; the device outlet 209 is the outlet of the crude oil mixed substance discharge device; the electromagnetic control valve 111 is located between the air pipe C section 110 and the gas detection chamber 112, and the electromagnetic control valve 111 is used to control the crude oil associated gas to flow into the gas detection chamber 112; the hydrogen sulfide gas detector 114 is located at the top of the gas detection chamber 112; The one-way air valve 113 is located on the side of the gas detection chamber 112, and the one-way air valve 113 is used to allow air to enter the gas detection chamber 112 in one direction to achieve stable air pressure in the gas detection chamber 112; the motor assembly 116 includes a motor and a motor push rod, and the motor controls the motor push rod to achieve the introduction and discharge of gas; the crude oil water content detector 204 is connected to the gas pipe section B 109, and the crude oil water content detector 204 is used to detect the water content data of the crude oil associated liquid; the liquid detection chamber 206 is connected to the liquid pipe section C 205, and the liquid detection chamber 206 is used to temporarily store the crude oil associated liquid to be tested; the crude oil liquid volume tester 207 is located in the liquid detection chamber 206 top, the crude oil liquid volume tester 207 is used to test the instantaneous flow rate and cumulative flow rate of the crude oil associated liquid; the hydrogen sulfide gas detector 114 is provided with a warning light 115 on the outside, and the warning light 115 lights up when the hydrogen sulfide gas detector 114 detects that the crude oil associated gas contains hydrogen sulfide gas; the crude oil water content detector 204 and the crude oil liquid volume tester 207 are both provided with a liquid crystal display screen; the electromagnetic control valve 111 has a timer, and the timer is used to control the opening and closing time of the electromagnetic control valve 111, and the opening and closing time set by the timer is related to the action time of the motor assembly 116 to extract the crude oil associated gas and push out the crude oil associated gas.

[0014] The embodiment of the present invention is a separation flow test device for hydrogen sulfide detection. When the crude oil flows into the gas-liquid mixing pipe section A 102 through the device inlet 101, the crude oil flows into the buffer pipe section A 103 through the gas-liquid mixing pipe section A 102. If the crude oil flow rate of the oil well is large, the crude oil will flow into the gas-liquid separation chamber A 105 through the buffer pipe section A 103 and the buffer pipe section B 104 at the same time. The crude oil undergoes the first gas-liquid separation in the gas-liquid separation chamber A 105, the crude oil associated liquid flows downward into the liquid pipe section A 107, and the crude oil associated gas flows upward through the gas pipe section A 106, the gas pipe section B 109, and the gas pipe section C 110, and then passes through the opening of the electromagnetic control valve 111. At this time, the motor assembly 116 extracts the crude oil associated gas and the outside air passing through the one-way gas valve 113 into the gas detection chamber 112. If the crude oil associated gas flowing into the gas detection chamber 112 is tested by the hydrogen sulfide gas detector 114 to find hydrogen sulfide gas, the warning light 115 is on. After the hydrogen sulfide gas detection is completed, the electromagnetic control valve 111 is closed, and the crude oil associated gas will be pushed out to the gas pipe D section 201 through the motor assembly 116, and the crude oil associated gas will be discharged through the gas pipe D section 201, the gas pipe E section 202, the gas-liquid mixing pipe B section 208, and the device outlet 209. After the crude oil passes through the gas-liquid separation chamber A105 for the first gas-liquid separation, the crude oil associated liquid flows into the gas-liquid separation chamber B108 through the liquid pipe A section 107. If the crude oil associated liquid contains a small amount of gas or bubbles precipitated, the crude oil associated liquid completes the second gas-liquid separation in the gas-liquid separation chamber B108. After the second gas-liquid separation, the crude oil associated gas flows upward into the gas pipe B section 109, which is the same as the flow direction of the crude oil associated gas and the process of detecting hydrogen sulfide, so it will not be repeated. After the second gas-liquid separation, the crude oil associated liquid flows downward through the liquid pipe section B 203. At this time, the crude oil water content detector 204 connected to the liquid pipe section B 203 measures the water content data of the crude oil associated liquid. After the water content data detection, the crude oil associated liquid flows into the liquid detection chamber 206 through the liquid pipe section C 205. At this time, the crude oil liquid quantity tester 207 provided on the top of the liquid detection chamber 206 tests the instantaneous flow rate and cumulative flow rate data of the crude oil associated liquid. After the liquid quantity test, the crude oil associated liquid is discharged through the gas-liquid mixing pipe section B 208 and the device outlet 209, thereby realizing the crude oil gas-liquid separation and realizing the data detection of the hydrogen sulfide gas associated with the crude oil and the crude oil liquid quantity.

[0015] The above are preferred embodiments of the present invention. It should be pointed out that a person skilled in the art may make several improvements and modifications without departing from the principles of the invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A separate flow test device for hydrogen sulfide detection, characterized in that: The device comprises an inlet, a gas-liquid mixing pipe, a buffer pipe, a gas-liquid separation chamber, an air pipe, a liquid pipe, an electromagnetic control valve, a gas detection chamber, a one-way gas valve, a hydrogen sulfide gas detector, a warning light, a motor assembly, a crude oil water content detector, a liquid detection chamber, a crude oil liquid volume tester, and a device outlet; the device inlet is the inlet for the crude oil mixture to enter the device; the gas-liquid mixing pipe includes gas-liquid mixing pipe section A and gas-liquid mixing pipe section B; the buffer pipe includes buffer pipe section A and buffer pipe section B; the gas-liquid separation chamber includes gas-liquid separation chamber A and gas-liquid separation chamber B; the air pipe includes air pipe section A, air pipe section B, air pipe section C, air pipe section D, and air pipe section E; the liquid pipe includes liquid pipe section A, liquid pipe section B, and liquid pipe section C; the device outlet is the outlet of the crude oil mixture discharge device.

2. A separate flow test device for hydrogen sulfide detection according to claim 1, characterized in that: The electromagnetic control valve is located between section C of the air pipe and the gas detection chamber, and the electromagnetic control valve is used to control the flow of crude oil associated gas into the gas detection chamber; the hydrogen sulfide gas detector is located at the top of the gas detection chamber; the one-way gas valve is located on the side of the gas detection chamber, and the one-way gas valve is used to allow air to enter the gas detection chamber in one direction to achieve stable air pressure in the gas detection chamber; the motor assembly includes a motor and a motor push rod, and the motor controls the motor push rod to achieve the introduction and discharge of gas; the crude oil water content detector is connected to section B of the air pipe, and the crude oil water content detector is used to detect the water content data of the crude oil associated liquid; the liquid detection chamber is connected to section C of the liquid pipe, and the liquid detection chamber is used to temporarily store the crude oil associated liquid to be tested; the crude oil liquid volume tester is located at the top of the liquid detection chamber, and the crude oil liquid volume tester is used to test the instantaneous flow rate and cumulative flow rate of the crude oil associated liquid.

3. A separate flow test device for hydrogen sulfide detection according to claim 1, characterized in that: The hydrogen sulfide gas detector is provided with a warning light on the outside, and the warning light turns on when the hydrogen sulfide gas detector detects that the crude oil associated gas contains hydrogen sulfide gas.

4. A separate flow test device for hydrogen sulfide detection according to claim 1, characterized in that: The crude oil water content detector and the crude oil liquid volume tester are both provided with a liquid crystal display screen.

5. A separate flow test device for hydrogen sulfide detection according to claim 1, characterized in that: The electromagnetic control valve has a timer, which is used to control the opening and closing time of the electromagnetic control valve. The opening and closing time set by the timer is related to the action time of the motor assembly to extract and push out the crude oil associated gas.

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