镇泾油田PDC钻头优选分析  

Optimal Selection of PDC Drill Bits for Zhenjing Oilfield

作　　者：游炎平[1] 汪国琴[2] 熊念[3] 钟磊[4] 游艺[1] 高斐[1] 

机构地区：[1]长江大学石油工程学院,湖北武汉430100 [2]江汉油田测录井工程公司开发所,湖北潜江433121 [3]延长油田股份有限公司南泥湾采油厂,陕西延安716000 [4]中海油田服务股份有限公司深圳分公司,广东深圳518067

出　　处：《辽宁化工》2013年第10期1261-1262,1265,共3页Liaoning Chemical Industry

摘　　要：由于镇泾油田地层承压能力低,岩石可钻性较低,孔隙裂缝发育,钻井液浸泡超过一定时间,极易引起井漏或井壁垮塌掉块等井下复杂事故,影响钻井周期。本文针对镇泾油田地层特性,对近两年的已完井资料中的PDC钻头的型号、机械钻速、单只钻头进尺和钻遇地层特性进行统计,对已使用PDC钻头进行优选分析。利用主成分法对优选PDC钻头结果进行评价,并通过现场使用验证优选结果,最终优选出S5665型号钻头。Due to the weak bearing capacity of stratum, the low drill ability of rock and the development of fissure-existing rock in Zhenjing oilfield, when drilling fluid soaks for a certain time, it＇s easy to cause downhole complex accidents, such as lost circulation, wellbore collapse and so on, which can affect the cycle of drilling. In this article, based on formation characteristics of Zhenjing oilfield, PDC drill bit type, mechanical drilling rate, footage per bit and encountered formation characteristics in well completion data in recent two years were analyzed, then optimal selection of PDC drill bits was carried out. Selected PDC bit was estimated by using principal component method, and verified by field use. The results show that S5665 drilling bit is the best.

关 键 词：PDC钻头 钻头优选 主成分法 镇泾油田 

分 类 号：TE921[石油与天然气工程—石油机械设备]