裂缝孔洞型地层试油堵漏压井工艺探讨
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摘要
磨溪高石梯灯影组是较为典型的裂缝孔洞型地层,由于裂缝孔洞非常发育,试油完毕后压井期间会发生大量漏失,必须堵漏才能安全起钻,而测试管柱结构的复杂性给堵漏压井带来了极大风险,文章从地质工程角度,结合实测的井底压力曲线等方面总结了现场堵漏压井作业现象和存在的不足,提出了磨溪高石梯灯影组试油堵漏压井可操作性的方法,对现场有一定的指导意义。
For fracture porosity reservoir in Moxi formation has developmental fracture pore, the drilling fluid will leak largely during well killing. In order to ensure drilling safety,the leakage formation must plug firstly. The existent problems and risk on conventional killing technologies were analyzed, and based on the geologic features in Moxi formation and combining with bottom pressure curve,the plugging methods suited for Moxi formation were put forward and applied successfully in Moxi gas field,and some suggestions on selecting lost circulation material for high- capacity well and low producing well were also proposed.
For fracture porosity reservoir in Moxi formation has developmental fracture pore, the drilling fluid will leak largely during well killing. In order to ensure drilling safety,the leakage formation must plug firstly. The existent problems and risk on conventional killing technologies were analyzed, and based on the geologic features in Moxi formation and combining with bottom pressure curve,the plugging methods suited for Moxi formation were put forward and applied successfully in Moxi gas field,and some suggestions on selecting lost circulation material for high- capacity well and low producing well were also proposed.
引文
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[3]邹永清,吴俊,肖吉华.裸眼封隔器完井注低密度液的井控风险及对策[J].天然气工业,2014,34(7):75-81.
[4]李黔,杨先伦,伍贤柱.压井过程中井底压力的控制方法[J].天然气工业,2013,33(9):87-90.
[5]丁海峰.长裸眼中途测试钻井液技术[J].石油钻探技术,2008,36(1):38-41.
[2]程维恒,王立军,李光辉.阿姆河右岸高温高压高含硫气田DST测试管柱优化设计[J].天然气工业,2014,34(4):76-82.
[3]邹永清,吴俊,肖吉华.裸眼封隔器完井注低密度液的井控风险及对策[J].天然气工业,2014,34(7):75-81.
[4]李黔,杨先伦,伍贤柱.压井过程中井底压力的控制方法[J].天然气工业,2013,33(9):87-90.
[5]丁海峰.长裸眼中途测试钻井液技术[J].石油钻探技术,2008,36(1):38-41.
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