南川区块气举工艺研究与应用

Research and Application of Nanchuan Block Gas Lift Technology

近年来,随着部分页岩气田开发进入中后期,由于地层能量减弱,井筒积液问题日益突出,严重影响气田高效平稳开发。本文通过在南川区块页岩气气藏地质特征和开发现状进行分析的基础上,利用自喷井临界携液模型深入分析南川区块井筒积液原因,同时利用气举压缩机为气举动力,向产水气井的井筒内注入高压天然气,降低管柱内液柱的密度,补充地层能量,提高举升能力,排除井底积液,恢复气井的生产能力并展开气举效果对比分析。

In recent years,along with some shale gas field development entered the later period,because the formation energy is abate,wellbore fluid problem increasingly prominent,seriously affect the gas field efficiently smooth development.Through shale gas reservoir geological characteristics and development on the nanchuan blocks based on the analysis of the status quo,using both liquid flowing well critical model analyzed the nanchuan block wellbore fluid,at the same time the gas lift compressor was used for gas lift the power,to inject high-pressure natural gas in water production of gas well,the density of the liquid column in the string was reduced,formation energy was complemented,the ability of lifting was improved,hole liquid was eliminated and the gas well production capacity was restored and gas lift effect analysis was expanded.