随钻电磁波电阻率和电缆电阻率测井联合反演及应用  

Joint Inversion of Electromagnetic Wave Resistivity Logging While Drilling(LWD)and Wireline Resistivity Logging and Its Applications

作　　者：冯进 张中庆[2,3] 罗虎 

机构地区：[1]中海油深圳分公司研究院,广东广州510240 [2]浙江大学,浙江杭州310012 [3]杭州迅美科技有限公司,浙江杭州310012

出　　处：《测井技术》2015年第1期21-26,共6页Well Logging Technology

摘　　要：针对海上油气田电阻率测井受泥浆侵入影响严重的现象,提出随钻电缆电阻率测井联合反演方法,以获取可靠地层电阻率和泥浆侵入深度。对于ARC675和HRLA这2种仪器,利用Marquardt方法,采取联合反演方式计算不同测井时刻的泥浆侵入半径和侵入带电阻率以及原状地层电阻率等参数。数值模拟结果显示,各参数联合反演相对误差小于0.5%。根据南海东部随钻测井与电缆测井资料开展的联合反演应用研究显示,联合反演结果符合泥浆动态侵入特征,与试油结果吻合,表明随钻电缆电阻率测井联合反演技术具有实用价值。In view of the facts that the measurement results of resistivity logging in offshore oil field are badly affected by mud-filtrate invasion, a joint inversion method of resistivity logging while drilling （LWD） and wireline resistivity logging is proposed to obtain accurate formation resistivity and invasion depth. For ARC675 and HRLA resistivity logging tool, the Marquardt method is used to compute the invasion radius, flushed zone resistivity and virgin formation resistivity at different time by joint inversion method. Numerical simulation results show that the relative error of all the inversion parameters is less than 0. 5%. Resistivity joint inversion application study is carried out according to logging data in eastern South China Sea. Application study shows that the joint inversion results are in line with the dynamic characteristics of mud invasion and are consistent with oil testing results, and indicates that the ioint inversion technique of LWD and wireline resistivity logging has practical value.

关 键 词：随钻测井 电缆测井 联合反演 电阻率 时间推移测井 

分 类 号：P631.84[天文地球—地质矿产勘探]