Environment-friendly anti-overflow control device

Abstract

An environment-friendly anti-overflow control device is characterized in that a sliding sleeve with a valve is fitted in a body, an incoming liquid passage is arranged in each of the sliding sleeve and the body, a fixed valve of an oil pump is replaced to allow normal production, a tool is connected between a pump barrel and a porous pipe so that the requirements of various daily underground operations are met, and pump operation and normal production are unaffected; conventional measures, such as packer expansive sealing, underground filtering, hot washing and moving level test, can be performed. The body is provided with the sliding sleeve that is of shear pin type; anti-blowout and oil discharge functions can be freely selected according to underground pressure; when tubing pressure reaches shear pin breaking pressure, a shear pin is broken, the sliding sleeve moves down, the lower incoming liquid passage is sealed, and an oil discharge hole is opened; when the tubing pressure is higher than casing pressure, the oil discharge hole is opened to discharge oil; when the tubing pressure is lower than the casing pressure, the oil discharge hole is sealed to prevent blowout. A sand settling chamber is designed inside to prevent sand from entering the pump; so that an anti-sand function is provided.

Description

technical field [0001] The invention is applied to the field of oil production in oil fields, the tool is mainly used for the control of oil well blowout prevention and oil leakage, is connected between the pump barrel and the flower tube, replaces the original fixed valve, and can realize sand settling, leak detection, leakage detection, etc. Blowout prevention and oil spill purpose. The device plays the role of sand settling during normal production. When the production well is operating, the internal pressure of the oil pipe is transmitted to realize the casing pressure and the oil pipe leak detection. When the production layer is high pressure, the pipe is blocked by blowout. A safety and environmental protection tool suitable for oilfield environmental protection operations. Background technique [0002] With the deepening of oilfield development, the proportion of production wells with mechanical water plugging has gradually increased, and the mechanical water pluggin...

AI Technical Summary

Problems solved by technology

The current tools cannot achieve the purpose of normal production during production and high-pressure pipe plugging and low-pressure oil drainage during operation. Under such technical conditions, there are many personnel safety risks and environmental protection risks during high-pressure well operations, resulting in extreme damage to oilfield production. According to this situation, an environmentally friendly anti-spill control device was designed, which can effectively control the risk on site

Images