Foam drainage technology is a low-cost and effective way of liquid drainage gas recovery,which is widely used in gas field's water discharge management.Some gas wells have the problem of sand coming out of the formation during liquid drainage gas recovery,which affects the effect of foam drainage gas recovery.Therefore,this paper carried out the evaluation and preferential selection experi-ments of foam drainage gas recovery based on ROSS-Miles method to provide a basis for the selection of foaming agents for gas field foam drainage gas recovery.Evaluation experiments on the foaming ability and foam stabilizing capability of the foaming agent in forma-tion water with different sand contents were conducted for gas wells,so as to analyze the degree of influence of sand content on the foa-ming agent performance,and to compare the liquid carrying ability of different foaming agents using an improved airflow method device.The research results indicate that in the same medium,the liquid carrying rate of the foaming agent decreases with the increase of liquid carrying time.Considering the degree of influence of sand content,it has been comprehensively judged that XHY-4 foaming agent has good foaming property,foam stabilization capability,liquid carrying rate,and liquid carrying speed rate,which is suitable for drainage and gas production in sand bearing gas fields.At the same time,it provides a reference for the optimization of foaming agent in sand bearing gas fields.
关键词
泡沫排水采气/砂含量/携液能力/起泡性能/稳泡能力
Key words
foam drainage gas recovery/sand content/liquid carrying ability/foaming property/foam stabilizing capability
维普
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