基于灰色关联的地层岩性随钻测井解释方法  

Formation Lithology Interpretation of LWD Based on Grey Relation

作　　者：谭开俊[1] 刘之的[1] 夏宏泉[1] 关银录[2] 杨志冬[3] 

机构地区：[1]西南石油大学,四川成都610059 [2]中国石油勘探开发研究院西北分院,甘肃兰州730020 [3]中国石油新疆油田分公司,新疆克拉玛依834000

出　　处：《测井技术》2007年第6期550-553,共4页Well Logging Technology

基　　金：中国石油天然气股份有限公司预探项目"准噶尔盆地西北缘精细勘探与有利目标选择"部分成果(编号:060108-3)

摘　　要：随钻测井地层岩性解释的准确性直接影响水平井地质导向钻井的作业质量,地层岩性判别错误会直接导致钻探工作的失利。介绍了一种基于灰色关联的随钻测井实时识别近钻头处地层岩性的方法。该方法从测井相分析的角度出发,充分利用随钻测井资料并从中提取反映岩性的特征参数,建立随钻岩性统计模式,并采用灰色关联分析法实时处理随钻测井资料,进而识别近钻头处的地层岩性。将该方法应用于×油田×井区等2口水平井的地质导向钻井中,及时提供了较为准确的岩性剖面,提高了水平井钻井中的随钻跟踪地质目标层的能力。Formation lithology interpretation of logging while drilling(LWD) is an important problem in geosteering of horizontal well drilling.Introduced is a practical method for real-time recognizing lithology of formation near drill bit in LWD based on grey relation.With the view angle of log-facies geological analysis,the method extracts some characteristic lithology parameters from information while drilling to construct a lithology statistical mode while drilling,and uses grey relation analysis to process the information while drilling to recognize lithology of formation near drill bit.The method timely provided relatively accurate lithology profile in geosteering well drilling of 2 horizontal wells in an oilfield,in which the ability of target tracking in horizontal well drilling was improved.

关 键 词：随钻测井 水平井钻井 岩性实时识别 岩性 灰色关联分析 

分 类 号：P631.84[天文地球—地质矿产勘探]