低压含硫气藏井筒解堵工艺浅析

Analysis of Wellbore Plugging Removal Technology in Low Pressure Sulfur-Containing Gas Reservoirs

摘要: 磨溪气田L气藏进入开采中后期，气井井筒堵塞现象频发，采用常规修井解堵受地层压力低等因素影响，效果不佳。文章从L气藏井筒解堵工艺出发，分析了低压含硫气井井筒堵塞原因，针对气藏性质探讨了解堵剂与泡排剂相结合的井筒解堵工艺在低压含硫气藏的适用性，为今后同类型气藏井筒解堵及现场工艺提供借鉴。

Abstract: L gas reservoir in Moxi gas field has entered the middle and late stage of production, and the gas wellbore plugging occurs frequently. Conventional workover is not effective due to low formation pressure and other factors. Starting from the wellbore plugging removal process of L gas reservoir, this paper analyzes the causes of wellbore plugging in low pressure sour gas wells, and discusses the applicability of the wellbore plugging removal process combining chemical agents and foaming agents in low pressure sour gas reservoirs according to the nature of the gas reservoir, which provides a reference for the wellbore plugging removal and field process of the same type of gas reservoirs in the future.