Original scientific paper

https://doi.org/10.17559/TV-20230413000528

The Sand Removal Performance and Erosion Characteristics of Shale Gas Wellhead Desander

Jian Zhang ; Safety, Environment and Technology Supervision Research Institute of Southwest Oil and Gas Field Company, Chengdu 610000, Sichuan, China
Chang Liu ; Safety, Environment and Technology Supervision Research Institute of Southwest Oil and Gas Field Company, Chengdu 610000, Sichuan, China
Dong Lin ; Safety, Environment and Technology Supervision Research Institute of Southwest Oil and Gas Field Company, Chengdu 610000, Sichuan, China
Jian Gao ; Safety, Environment and Technology Supervision Research Institute of Southwest Oil and Gas Field Company, Chengdu 610000, Sichuan, China
Changchao Qi ; Safety, Environment and Technology Supervision Research Institute of Southwest Oil and Gas Field Company, Chengdu 610000, Sichuan, China
Jun Jiang ; Chongqing Gas Mine of Southwest Oil and Gas Field Company, Chongqing 400707, China
Bo Kou ; Southwest Petroleum University, Petroleum Engineering School, Chengdu 610500, China
Shanbi Peng ; Southwest Petroleum University, School of Civil Engineering and Geomatics, Chengdu 610500, China *

* Corresponding author.

Abstract

In the process of shale gas extraction, fracturing technology is often used, and the extracted gas contains large amounts of sand, resulting in the risk of blockage and erosion of surface gathering equipment, which seriously affects safe production. To address this problem, this paper presents a numerical study of the sand removal performance and erosion characteristics of the filter desander used in Sichuan shale gas fields under different operating conditions (flow velocity, sand mass flow rate, operating pressure, and sand particle size) using CFD method. The results show that the increase of shale gas velocity is not conducive to the efficient operation of the filter desander. So the flow velocity should be controlled within 10 m/s as much as possible to avoid the rapid drawdown of separation efficiency and overly high erosion rate. When the sand size increases from 10μm to 100μm, the erosion area of the filter desander changes to sheet-like distribution, and the separation efficiency increases to 85%, a 2.3-fold increase. In addition, the change in operating pressure has a relatively small impact on the erosion wear of the desander.

Keywords

desander; erosion; separation efficiency; numerical simulation; shale gas

Hrčak ID:

309233

URI

https://hrcak.srce.hr/309233

Publication date:

25.10.2023.

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