气藏型储气库井安全风险及其应对措施  

Safety risks and countermeasures on the wells in underground gas storage rebuilt from depleted gas reservoir

作　　者：张刚雄[1,2] 郭凯 丁国生[1,2] 郑得文[1,2] 魏欢[1,2] 钱品淑[1] ZHANG Gangxiong GUO Kai DING Guosheng ZHENG Dewen WEI Huan QIAN Pinshu(Langfang Branch of PetroChina Research Institute of Petroleum Exploration ＆ Development CNPC Key Laboratory of Underground Oil and Gas Storage Engineering PetroChina Natural Gas ＆ Pipeline Company)

机构地区：[1]中国石油勘探开发研究院廊坊分院 [2]中国石油天然气集团公司油气地下储库工程重点实验室 [3]中国石油天然气与管道分公司

出　　处：《油气储运》2016年第12期1290-1295,共6页Oil & Gas Storage and Transportation

基　　金：中石油集团公司重大科技专项课题"储气库运营模式及经济技术研究";2015E-4001

摘　　要：为了解决地质条件复杂性给储气库钻井工程带来的漏失、卡钻、固井质量差、周期长、成本高等问题,结合储气库实际地质情况,采取优化井身结构、气体钻井、分层承压堵漏、双级固井,改进固井水泥浆体系(双密度水泥浆固井、柔性自应力水泥浆体系),低压碳酸盐岩储层暂堵及压井技术、超细堵漏水泥浆体系、老井封堵配套技术等技术措施,有效降低了储气库钻完井事故风险、提高了固井质量,同时有效控制了投资成本。研究成果对后续储气库钻完井工程实施具有指导和借鉴意义。The geological complexity results in multiple risks in the drilling engineering of underground gas storage （UGS）, e.g. leakage, sticking, poor cementing quality, long period and high cost. In order to reduce these risks, a series of technical measures were taken according to the actual geological situation of the underground gas storage, such as casing program optimization, gas drilling, layered plugging under pressure, two-stage cementing, cementing slurry system improvement （double-density slurry cementing and flexible self-stress slurry system）, temporary plugging and well killing technology for low-pressure carbonate reservoir, ultrafine plugging slurry system and supporting technology for old well plugging. By virtue of these measures, the accident risk of UGS well drilling and completion is reduced significantly, the cementing quality is improved and the investment cost is controlled effectively. The research results can be used as the guidance and reference for the implementation of subsequent UGS well drilling and completion engineering. （5 Figures, 2 Tables, 16 References）

关 键 词：储气库 气体钻井 承压堵漏 水泥浆体系 老井封堵 风险 

分 类 号：TE822[石油与天然气工程—油气储运工程]