A gas lift distribution device based on orifice meter

Abstract

This utility model relates to the field of oilfield development technology, and particularly to a gas lift distribution device based on an orifice plate flow meter. An embodiment of this utility model provides a gas lift distribution device based on an orifice plate flow meter, comprising: a main pipeline connected to a compressor for distributing high-pressure gas to multiple branch pipelines connected to the main pipeline; branch pipelines for transporting the high-pressure gas flowing into them from the main pipeline to oil wells or gas wells; a flow metering device for real-time acquisition of the flow rate on the branch pipelines; and a control actuator for adjusting the opening of regulating valves on the branch pipelines. This utility model provides a gas lift distribution device based on an orifice plate flow meter capable of distributing high-pressure gas supplied by one compressor to multiple wellheads.

Description

Technical Field

[0001] This utility model relates to the field of oilfield development technology, and in particular to a gas lift distribution device based on an orifice plate flow meter. Background Technology

[0002] Gas lift distribution equipment is a key device used in the oil and gas field development process. It can accurately distribute high-pressure gas, which has been pressurized, to each oil well or gas well according to a preset distribution plan, so as to achieve efficient and stable oil well or gas well production.

[0003] In related technologies, a gas lift device can only supply one wellhead through a pipeline. If an oil well or gas well has multiple wellheads, multiple gas lift devices are needed to supply multiple wellheads. Utility Model Content

[0004] This utility model provides a gas lift distribution device based on an orifice plate flow meter, which can distribute high-pressure gas provided by a compressor to multiple wellheads.

[0005] This utility model embodiment provides an air lift distribution device based on an orifice plate flow meter, comprising:

[0006] The main pipeline, connected to the compressor, is used to distribute high-pressure gas to multiple branch pipelines connected to the main pipeline;

[0007] Branch pipelines are used to transport high-pressure gas flowing into the main pipeline to oil wells or gas wells;

[0008] A flow metering device is used to collect the flow rate on the branch pipe in real time;

[0009] A control actuator is used to adjust the opening degree of the regulating valve on the branch pipe;

[0010] The flow metering device includes an orifice plate flow meter and a differential pressure gauge, wherein the differential pressure gauge is used to detect the pressure difference between the inlet and outlet ends of the orifice plate flow meter.

[0011] One possible design also includes:

[0012] A temperature and pressure acquisition unit is installed at the end of the regulating valve near the main pipeline;

[0013] The temperature and pressure acquisition unit is used to acquire the temperature and pressure of the high-pressure gas to be passed through the regulating valve in real time, and to generate temperature and pressure data.

[0014] The control actuator is used to receive the temperature and pressure data.

[0015] In one possible design, the temperature and pressure acquisition unit is an integrated temperature and pressure transmitter.

[0016] In one possible design, the flow metering device and the temperature and pressure acquisition unit are equipped with a combination of needle valve and three valve groups or a combination of shut-off valve and three valve groups.

[0017] In one possible design, both the main pipe and the branch pipe are equipped with ball valves.

[0018] In one possible design, both the main pipe and the branch pipe are mounted on a skid.

[0019] In one possible design, the main pipe of the air lift distribution device is also connected in series with the main pipes or branch pipes of other air lift distribution devices.

[0020] Compared with the prior art, the present invention has at least the following advantages:

[0021] High-pressure gas from the compressor or other equipment first enters the gas lift main pipeline. Then, according to the production needs of each oil and gas well, a preset gas distribution scheme is set for each branch pipeline. Preset flow rates can be remotely set, and the gas is distributed to the corresponding oil and gas wells through the branch pipelines. During the distribution process, the gas lift flow metering device measures the gas flow rate in real time, obtaining flow data, and transmits this data to the control actuator. Based on the collected flow data, the control actuator automatically adjusts the opening of the control valve to achieve precise control of the gas injection volume of each individual well. This ensures that the gas injection volume remains stable and constant even when the injection pressure of a single well changes, thereby improving the production efficiency and recovery rate of the oil or gas well. Furthermore, this application also allows adjustment of the control valve opening via the touchscreen of the control actuator. It should also be noted that the control valve opening can also be adjusted using a specific wrench. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an air lift distribution device based on an orifice plate flow meter provided in an embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of another air lift distribution device based on an orifice plate flow meter provided in this embodiment of the present invention.

[0025] In the picture:

[0026] 1-Main pipeline;

[0027] 2-branch pipes;

[0028] 3-Control actuator;

[0029] 4-Regulating valve;

[0030] 5-Orifice plate flow meter;

[0031] 6-Differential pressure gauge;

[0032] 7-Lever mount. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0034] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this specification, it should be understood that the directional terms such as "upper" and "lower" used in the description of the embodiments of this utility model are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this utility model. Furthermore, in the context, it should also be understood that when it is mentioned that one element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0036] like Figure 1 As shown, this utility model embodiment provides an air lift distribution device based on an orifice plate flow meter, comprising:

[0037] Main pipe 1, connected to the compressor, is used to distribute high-pressure gas to multiple branch pipes connected to the main pipe;

[0038] Branch pipe 2 is used to transport the high-pressure gas flowing into it from the main pipe to the oil well or gas well;

[0039] Flow metering device, used to collect flow rate on branch pipes in real time;

[0040] The actuator 3 is used to adjust the opening of the regulating valve 4 on the branch pipeline;

[0041] The flow metering device includes an orifice plate flow meter 5 and a differential pressure gauge 6, which is used to detect the pressure difference between the inlet and outlet ends of the orifice plate flow meter 5.

[0042] In this invention, high-pressure gas from a compressor or other equipment first enters the gas lift main pipeline 1. Then, according to the production needs of each oil and gas well, a preset gas distribution scheme is set for each branch pipeline 2. The preset flow rate value can be remotely set, and the gas is distributed to the corresponding oil and gas wells through the branch pipelines 2. During the distribution process, the gas lift flow metering device measures the gas flow rate in real time, obtains flow data, and transmits this data to the control actuator 3. The control actuator automatically adjusts the opening of the control valve based on the collected flow data to achieve precise control of the gas injection volume of each individual well, ensuring that the gas injection volume remains stable and constant when the gas injection pressure of a single well changes, thereby improving the production efficiency and recovery rate of the oil or gas well. In addition, this application also allows manual adjustment of the opening of the regulating valve via the touch screen of the control actuator. It should also be noted that the opening of the regulating valve can also be adjusted using a specific wrench.

[0043] In this embodiment, the standard orifice plate of the orifice plate flow meter 5 is installed between the orifice plate flanges. When the fluid flows through the standard orifice plate, a pressure difference will be generated between its upstream and downstream sides. The flow rate through the orifice plate can be calculated according to Bernoulli's equation (or other equations).

[0044] In some embodiments of this utility model, a temperature and pressure acquisition unit is provided at the end of the regulating valve near the main pipeline 1;

[0045] The temperature and pressure acquisition unit is used to acquire the temperature and pressure of the high-pressure gas to be passed through the regulating valve 4 in real time, and generate temperature and pressure data.

[0046] The control actuator is used to receive temperature and pressure data.

[0047] In this embodiment, the data collected by the temperature and pressure acquisition unit is transmitted to the control actuator 3. The control actuator 3 stores a preset safety range. The control actuator 3 determines whether the received temperature and pressure data is within the safety range. If it is, it indicates that the current situation is relatively safe. If it is not, there is a risk. The control actuator 3 will then issue an alarm or close the regulating valve 4 for maintenance.

[0048] In addition, after receiving the temperature and pressure data, the control actuator 3 can also calculate the flow rate in the branch pipe 2 based on the temperature and pressure data and the pressure difference of the differential pressure gauge.

[0049] In some embodiments of this utility model, the temperature and pressure acquisition unit is an integrated temperature and pressure transmitter.

[0050] In some embodiments of this utility model, the flow metering device and the temperature and pressure acquisition unit are equipped with a combination of needle valve and three valve groups or a combination of shut-off valve and three valve groups.

[0051] In this embodiment, the combination of needle valve and three valve groups or the combination of shut-off valve and three valve groups is used to switch on and off each gas detection module. When repairing or replacing the detection unit, maintenance can be carried out without interrupting production.

[0052] In some embodiments of this utility model, both the main pipeline 1 and the branch pipeline 2 are equipped with ball valves. The ball valves allow for manual closure of both the main pipeline 1 and the branch pipeline 2. Specifically, a ball valve is installed at the outlet of the main pipeline 1, and the ball valve of the branch pipeline 2 is installed upstream of the regulating valve.

[0053] In some embodiments of this utility model, both the main pipeline 1 and the branch pipeline 2 are installed on the skid base 7. The skid base 7 is a basic support structure that supports other components. It is made of high-strength steel and has sufficient strength and stability to adapt to the harsh environment of the oilfield.

[0054] like Figure 2 As shown, in some embodiments of this utility model, the main pipe 1 is also connected in series with the main pipe 1 or branch pipe 2 of other air lift distribution devices.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A gas lift distribution device based on an orifice plate flow meter, characterized in that, include: The main pipeline, connected to the compressor, is used to distribute high-pressure gas to multiple branch pipelines connected to the main pipeline; Branch pipes are used to transport high-pressure gas flowing into them from the main pipe to oil wells or gas wells; A flow metering device is used to collect the flow rate on the branch pipe in real time; A control actuator is used to adjust the opening degree of the regulating valve on the branch pipe; The flow metering device includes an orifice plate flow meter and a differential pressure gauge, wherein the differential pressure gauge is used to detect the pressure difference between the inlet and outlet ends of the orifice plate flow meter. A temperature and pressure acquisition unit is installed at the end of the regulating valve near the main pipeline; The temperature and pressure acquisition unit is used to acquire the temperature and pressure of the high-pressure gas to be passed through the regulating valve in real time, and to generate temperature and pressure data. The control actuator is used to receive the temperature and pressure data; After receiving the temperature and pressure data, the controller calculates the flow rate in the branch pipe based on the temperature and pressure data and the pressure difference from the differential pressure gauge. The temperature and pressure acquisition unit is an integrated temperature and pressure transmitter; The flow metering device and the temperature and pressure acquisition unit are equipped with a combination of needle valve and three valve groups or a combination of shut-off valve and three valve groups. Both the main pipeline and the branch pipeline are equipped with ball valves; Both the main pipeline and the branch pipeline are installed on the skid mount; The main pipe of the gas lift distribution device is also connected in series with the main pipes or branch pipes of other gas lift distribution devices.

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