A tie-type gas well opening slow plugging device and its application method
An application method and technology of bonding, which can be applied to the valve device of wellbore/well, wellbore/well components, earth-moving drilling and production, etc., can solve the problems of difficult management and maintenance of gas wells, save manpower and material resources, and have broad application prospects. , the effect of reducing the difficulty of maintenance
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Embodiment 1
[0021] When a gas well in a gas field is opened, when the pressure recovery is high, it is necessary to manually operate the needle valve gently to throttle and reduce the pressure during the well opening, so as to prevent the pressure of the pipeline downstream of the needle valve from exceeding the design 6.3MPa pressure, because the throttling process is inevitable When the temperature drops, a certain amount of hydrate will gradually be formed in the wellhead pipeline downstream of the needle valve, and due to the throttling and cooling phenomenon of the needle valve at the wellhead during the well opening process, some hydrate particles formed during the well opening will go down with the air flow and block the wellhead surface The swirling vortex flowmeter downstream of the pipeline caused ice blockage in the pipeline. In order to solve pipeline ice blockage and dredge pipelines, this embodiment provides a tie-type gas well opening slow blocking device, such as figure 1 ...
Embodiment 2
[0027] On the basis of Example 1, such as figure 1 with image 3 As shown, the inner cavity of the oil pipe 2 is also provided with a hydrate filter plate 4, and the hydrate filter plate 4 is placed in the inner cavity of the downstream of the oil pipe 2 perpendicular to the central axis of the oil pipe 2, and is located downstream of the tie-type vortex generator 3.
[0028] The working process and working principle of the tie-type gas well opening slow plugging device are as follows;
[0029] A tie-type gas well opening slow plugging device is connected between the gas well needle valve and the gas well flowmeter. When the gas well is opened, the wellhead pipeline downstream of the needle valve produces extremely low temperature, hydrates are formed in the pipeline, and the hydrates grow gradually. The bonded vortex generator 3 induces the gas flow in the pipeline to generate a relatively regular vortex flow pattern, and utilizes the sweeping characteristics of the vortex. ...
Embodiment 3
[0031] On the basis of Example 2, such as figure 2 As shown, the ribbon-type vortex generator 3 is a wavy ribbon-shaped structure, and the wavy ribbon-shaped structure has a plurality of vortex waveform periods, and the waveform of each vortex waveform period is twisted. The included angle between the tangent line of the outer edge of the tie of the tie-type vortex generator 3 and the central axis of the oil pipe 2 is 50 degrees. The bond type vortex generator 3 has two vortex waveform periods.
[0032] The bond-type vortex generator 3 can induce the airflow in the pipeline to generate a relatively regular vortex flow pattern, and use the sweeping characteristics of the vortex to enhance the liquid-carrying of the airflow, reduce the liquid phase adhesion on the pipe wall, and alleviate the formation of hydrate particles. And the grown hydrate particles are stripped from the pipe wall and blown downstream to prevent them from adhering to the pipe wall downstream of the needl...
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