煤矿安全2024，Vol.55Issue(2)：35-40,6.DOI:10.13347/j.cnki.mkaq.20221671
薄互层煤层气井出砂综合治理研究
Research on sand control in thin interbed CBM wells
摘要
Abstract
Coalbed methane well sand(pulverized coal)problem restricts the production life of coalbed methane well,resulting in high maintenance costs,reduce productivity,and because of the large contact area between thin interbed coal seam and surrounding rock,the problem of sand production(pulverized coal)is prominent.In the Surat Basin of Australia,the coal seam cementation is loose and the coal/mud/sandstone interlayer is complex.In the statistical wells,100%of the production wells have different degrees of sand production problems,and 33.5%of which have serious sand production,frequent workover operations,and high production costs.Based on the systematic analysis of the reservoir characteristics,sand production characteristics and production rules in Surat Basin,the comprehensive sand discharge prevention technology of"expansion packer + blind tube"and"screw pump + slurry ro-tor + automatic shunt valve + drilling through casing shoes"is adopted according to the research on the particle settlement law,com-bined with the prediction of sand production level and the optimization of sand control technology.The problem of sand production in coal measure strata in Surat Basin has been solved in stages.The field application results show that the average continuous produc-tion time of a single well increases from 275 days to nearly 400 days,and the workover frequency is reduced by nearly 50%.关键词
薄互层/煤层气井/出砂/苏拉特盆地/防砂/携砂生产Key words
thin interbed/coalbed methane well/sand production/Surat Basin/sand control/sand carrying production分类
矿山工程引用本文复制引用
张越,于姣姣,李又武,吴晓丹,蒋时馨,谷峰,崔景云,高英..薄互层煤层气井出砂综合治理研究[J].煤矿安全,2024,55(2):35-40,6.基金项目
中国海洋石油集团公司自主创新科研资助项目(QDKY-2019-YFZX-23) （QDKY-2019-YFZX-23）
