Gas well fine silt ground separation and silt discharge device

Abstract

The invention relates to a fine silt ground separation and discharge device for separating and discharging silt in a gas well. By using the device, the problems of abrasion, ablation, blocking and the like of collecting and conveying equipment caused by difficulty in separation of natural gas containing fine silt are solved. The technical scheme is as follows: a flocculant pool is connected with a centrifugal pump through a pipeline; a filter is installed in a sedimentation pool and connected with the centrifugal pump through a pipeline; a sedimentation liquid inlet is located at the left side of the sedimentation pool and connected with the bottom of an effusion storage tank; the outlet of the centrifugal pump is connected to a nozzle pipeline allocated on the upper part of a separator; the exterior of the separator is provided with a metal shell, the lower end of the inner cavity of the separator is provided with a sedimentation region, a turbulence ball group is arranged above the sedimentation region, two groups of nozzles are arranged above the inner cavity, and a fog capturing device is arranged above the nozzles; and the right side of the separator is provided with a liquidlevel alarming device, the lower end of the separator is provided with a raw material gas inlet, the top of the separator is provided with a purified gas outlet, the bottom of the separator is provided with a silt-containing deposit liquid outlet, and the lower part of the separator is provided with a reserve washing liquid inlet. The device has high fine silt separation efficiency and small energy consumption, and can be used for ground separation treatment of wet natural gas and dry gas.

Description

Technical field [0001] The invention relates to a ground separation and sand discharge device for fine silt sand used for ground separation and balanced sand discharge of natural gas containing fine silt sand in a natural gas well. technical background [0002] Some loose sandstone gas reservoirs in China belong to Quaternary siltstone and argillaceous siltstone, which are characterized by undercompaction, poor diagenesis, loose cementation, high clay, high argillaceous, high salinity, strong sensitivity and severe sand production. Most production wells can only be produced by controlling the pressure difference, which greatly restricts the productivity of gas wells. At present, conventional sand control technologies are basically ineffective or have poor effects. Sand control is extremely difficult, which severely restricts the efficient development of gas fields. In addition, due to gas fields The stratum cementation is loose, the cementing quality of the second cementing inter...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of series of potential safety hazards such as wear of equipment components in the gathering and transportation system caused by the difficulty of separating fine silt in sand-bearing natural gas, erosion and blockage of pipelines, instruments and other components, and provides a gas well fine Silt ground separation sand discharge device

Images