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玉门油田水平井固井技术 被引量:8

Horizontal Well Cementing Technology Used in Yumen Oilfield
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摘要 针对玉门油田水平井开发、多级压裂的作业特点,以建立长期有效的层间封隔为目标,通过开展固井材料、水泥环失效分析和固井工艺技术研究,开发了驱油前置液、增韧防窜水泥浆、水泥环完整性评价等固井技术。通过工艺配套和材料集成,形成玉门油田水平井开发固井技术。2015年以来,在玉门油田完成全部水平井固井应用7井次,固井一次合格率为100%,优质井4口。已投产的3口水平井,压裂后平均含水率在30%以下,比同区块的井位明显降低。该技术还在玉门油田小间隙固井推广使用8井次,固井优质率达到了75%。水平井固井技术取得了良好的应用效果,该项技术具有广阔的市场应用前景。 A set of well cementing technologies, such as oil-displacing prepad fluid, toughness-enhanced anti-channeling cement slurries, and the evaluation of the integrity of cement sheath, was developed to improve the job quality of cementing horizontal wells(in which multistage fracturing will be performed) in Yumen Oilfield. These technologies, special for cementing horizontal wells drilled in Yumen Oilfield,were aimed at establishing long-termzonal isolation, and were developed based on the studies on cementing materials,the failure of cement sheath, and cementing techniques. These technologies have been applied on seven horizontal wells in Yumen since2015, and the cementing job quality of each well was satisfactory at the first try, and four wells out of the seven wells had excellent cementing job quality. Each of three wells that have been cemented with these technologies and have put into production has average water cut that is less than 30% after fracturing, lower than the water cut of the wells drilled in the same block. These technologies have also been applied on eight wells with small annular spaces, and 75% of the cementing job was excellent. These technologies are promising and have gained good results in horizontal well cementing.
出处 《钻井液与完井液》 CAS 北大核心 2016年第5期98-102,共5页 Drilling Fluid & Completion Fluid
关键词 驱油前置液 增韧防窜水泥浆 水泥环完整性 水平井固井 小间隙 Oil-displacing prepad fluid Toughness-enhanced anti-channeling cement slurry Integrity of cement sheath Horizontal well cementing Small annular space
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