Pressure release device and wellhead device with same
A port and connecting port technology, applied in the field of oil production, can solve the problem of high labor intensity of workers, and achieve the effect of reducing labor intensity
Active Publication Date: 2020-02-07
PETROCHINA CO LTD
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- Application Information
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Problems solved by technology
[0003] The main purpose of the present invention is to provide a pressure relief device and a wellhead device with it, so as to solve the problem of high labor intensity of workers due to the need for manual pressure relief in the prior art
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[0023] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0024] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0025] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that wh...
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The invention provides a pressure release device and a wellhead device with the same. The pressure release device includes a main pipe and a branch pipe. The main pipe includes a blocking section anda communication section, and the communication section is provided with a first communication port. A first adjusting rod is internally provided with an overflowing channel. The communication sectioncan communicate with the branch pipe through the overflowing channel. The overflowing channel is provided with a second communication port, and a one-way mechanism is arranged at the second communication port. The first adjusting rod is provided with a blocking position and a communication position. When the first adjusting rod is in the blocking position and the fluid pressure in the communication section is less than or equal to the working pressure of the one-way mechanism, the communication section does not communicate with the branch pipe. When the first adjusting rod is in the blocking position and the fluid pressure in the communication section is greater than the working pressure of the one-way mechanism, or when the first adjusting rod is in the communication position, the communication section communicates with the branch pipe. Through application of the technical scheme of the pressure release device, the problem of high labor intensity of workers in the prior art due to theneed for manual pressure release can be effectively solved.
Description
technical field [0001] The invention relates to the field of petroleum production, in particular to a pressure relief device and a wellhead device having the same. Background technique [0002] Heavy oil production generally adopts oil well pumps for suction. Oil well pumps are easily affected by casing gas pressure during the suction process to form air locks, resulting in a drop in the dynamic fluid level and a decrease in the submergence of the pump, which directly affects the fluid production of the oil well. , leading to a reduction in crude oil production. In the prior art, it is generally necessary to frequently open the valve manually for discharge, which makes the labor intensity of the workers high. Contents of the invention [0003] The main purpose of the present invention is to provide a pressure relief device and a wellhead device with the same, so as to solve the problem in the prior art that the labor intensity of workers is high due to the need for manual...
Claims
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Login to View More IPC IPC(8): E21B34/02E21B33/03
CPCE21B34/02E21B33/03
Inventor 李海军李登儒何静王桂兵
Owner PETROCHINA CO LTD