利用岩屑波速随钻检测地层可钻性及优选钻头类型  

Rock-drillability evaluation and bit selection through ultrasonic velocity measurement on cuttings

作　　者：邹德永[1] 程远方[1] 查永进[2] 李维轩[2] 

机构地区：[1]石油大学石油工程学院,山东东营257061 [2]中国石油天然气集团公司新疆油田公司,新疆克拉玛依834000

出　　处：《石油大学学报（自然科学版）》2005年第1期37-40,共4页Journal of the University of Petroleum,China(Edition of Natural Science)

摘　　要：研制了随钻测量钻井岩屑声波速度的便携式钻屑波速测试系统,并对岩屑波速进行了测试,建立了岩屑波速与可钻性级值的关系模型。利用该模型,可随钻标定地层的可钻性级值。对数百只钻头的使用资料进行了统计分析,建立了钻头类型与地层可钻性级值的对应关系。根据地层可钻性的随钻标定结果及变化趋势,利用钻头类型与地层可钻性级值的对应关系,即可优选出适合于待钻井段的钻头类型。在DW 1井上进行了钻头优选现场试验,证明该方法是有效的。A convenient device for ultrasonic velocity measurements on cuttings was designed. The correlations between the ultrasonic velocity on cuttings and the rock-drillability index values were given after laboratory tests. The relationship between bit types and the rock-drillability index values was given based on a number of field bit data. According to the rock-drillability index values obtained from cuttings and the relationship between the bit types and the rock-drillability index values, the most appropriate bit for any hole section can be selected. The case was given and verified the method validity.

关 键 词：钻头类型 随钻测量 可钻性 岩屑 钻井 地层 优选 声波速度 标定 变化趋势 

分 类 号：TE921.1[石油与天然气工程—石油机械设备] TE142