As development technologies change in South Yanchuan Gas Field,particularly with the in-troduction of effective support fracturing technology characterized by large displacement,large liquid volume and large sand volume,coupled with the high-efficiency drainage system.This paper analyzes the causes of sand production.It studies the countermeasures for sand control from both the formation and wellbore perspectives and introduces three sand control technologies,including fiber fracturing sand control technology,oil pump dynamic adjustment sand control technology and hydraulic jet pump sand control technology.Field experiments show that these three technologies effectively addressed the sand production problem in coalbed methane wells using effective support fracturing.
Development technologiescauses of sand productionsand control technologyfield experi-ments
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