A multi-channel swirling automatic liquid control device

Abstract

The invention provides a multi-channel swirl automatic liquid control device, which relates to the technical field of petroleum and natural gas exploitation. It includes a valve cover (1) and a valve body (2), the valve body (2) has two liquid inlets (A(3), B(4)), one liquid outlet (5) and multi-stage flow channels; The flow channels include an outer swirl flow channel (6), a tangential flow channel (7), an intermediate flow channel (8) and an inner swirl flow channel (9). Using different inertial forces generated by different fluids in the flow channel, the fluid can flow through the multi-stage flow channel in sequence to generate multiple split flows, and form multi-circle swirl flow in the flow channels at all levels, resulting in a large pressure loss of the target controlled fluid. It solves the problem of uneven fluid production profiles in oil and gas reservoirs, can automatically control the output of different fluids, meets the requirements of balanced control of fluid production profiles in horizontal wells, can effectively reduce the water content of horizontal wells, prolong the water breakthrough time of oil and gas wells, and improve oil and gas production. Yield.

Description

technical field [0001] The invention relates to the technical field of oil and natural gas exploitation, in particular to a multi-channel swirl automatic liquid control device. Background technique [0002] The use of horizontal wells in oil and gas field development can improve productivity and recovery, but the heterogeneity of the reservoir may lead to uneven production in horizontal wells and lead to early water breakthrough in part of the wellbore, and the increase in water content will This led to a rapid decline in production from production wells. In the development of oil and gas fields, some oil and gas wells see water very early, often in the stage of mining or even just putting into production, which greatly reduces the benefits of oil and gas wells. In order to achieve efficient production of horizontal wells, it is necessary to realize multi-layer control in single wells, selective production and injection in horizontal wells and multi-branch wells, and real-t...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of the existing inflow controller, such as insignificant phase separation effect and insufficient fluid swirl, and provide a multi-channel swirl automatic liquid control device. The device is provided with multi-stage flow channels, and the fluid passes through the device After multiple phase separations, the phase separation effect is greatly improved, and the target controlled fluid with a large inertial force is fully swirled, resulting in a large pressure loss and controlling the output of the controlled fluid

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