多深度电阻率曲线分异特征研究及地质导向应用  

Study on differentiation characteristics of multi depth resistivity curves and its geological guidance application

作　　者：王光 王晓飞[2,3] 孙宝龙 王彦晚[2,3] 梁云祥 WANG Guang;WANG Xiaofei;SUN Baolong;WANG Yanwan;LIANG Yunxiang(Zhanjiang Branch,CNOOC Limited(China),Zhanjiang 524057,Guangdong;Zhanjiang Operation Company,Well-Tech Department,COSL,Zhanjiang 524057,Guangdong;Key Laboratory of Deep Sea Deep Formation Energy Engineering of Hainan Province,Haikou 570100,Hainan)

机构地区：[1]中海石油(中国)有限公司湛江分公司,广东湛江524057 [2]中海油田服务股份有限公司油田技术事业部湛江作业公司,广东湛江524057 [3]海南省深海深层能源工程重点实验室,海南海口570100

出　　处：《长江大学学报（自然科学版）》2024年第6期60-67,共8页Journal of Yangtze University(Natural Science Edition)

摘　　要：现有的常规测量数据在进行地质导向时存在不确定性大、人工干预多等缺点,难以在业内推广,随着勘探开发的深入,薄油层、断块油层、底水和边水层开发成为常态,对常规随钻工具地质导向配套技术提出了更高的要求。基于此,对常规随钻电磁波电阻率仪器在薄层、近边界、远边界、各向异性地层、倾斜地层等不同地层条件下进行模拟,根据电阻率曲线分异特征与地层产状的关系,定义指示地层各向异性、边界位置、倾角等关键导向参数的分异信号,并给出量化方法;再依据分异信号良好的地层产状参数指示,借助反演技术对实时测量数据进行地层产状参数信息的实时解读;最后通过测量电阻率数据获取地层边界指示、储层产状预判、井眼周围电阻率提取等地质导向关键参数提取,用于指导地质导向。该方法具有人工干预少、信息获取速度快、基于实测数据计算可靠性高等优势,为常规仪器地质导向技术的推广应用提供了新方法。At present,the resistivity LWD tool without azimuth recognition function is difficult to popularize in the industry due to its large uncertainty and many manual interventions.With the deepening of oil exploration and development,the development of thin oil layer,fault block oil layer,bottom water and edge water layer has become the norm,which puts forward higher requirements for geological guidance technology of LWD.For this reason,this paper simulates LWD in thin layer,near boundary,far boundary,anisotropic formation,inclined formation,etc.According to the relationship between curve differentiation characteristics and formation occurrence,the indication signals indicating key geological parameters such as formation anisotropy,boundary position and dip angle are defined,and the quantitative calculation method of indication signals is given.According to the good correspondence between signals and formation occurrence parameters,the formation occurrence information of real-time LWD data is interpreted with the help of inversion technology.The formation boundary distance is obtained by logging while drilling resistivity data,the reservoir occurrence is predicted,and the resistivity information around the borehole is extracted to guide geological guidance.This method has the advantages of no manual intervention,fast calculation speed and high reliability based on measured data.It provides a new method for the popularization and application of instrument geological guidance technology without azimuth recognition ability.

关 键 词：电阻率 曲线分异 极化角 各向异性 地质导向 

分 类 号：TE132.14[石油与天然气工程—油气勘探] P631.84[天文地球—地质矿产勘探]