测井地质学研究中的典型误区与科学思维  

Typical misunderstandings and scientific ideas in well logging geology research

作　　者：赖锦[1,2] 庞小娇 赵鑫 赵仪迪 王贵文[1,2] 黄玉越 李红斌 黎雨航 LAI Jin;PANG Xiaojiao;ZHAO Xin;ZHAO Yidi;WANG Guiwen;HUANG Yuyue;LI Hongbin;LI Yuhang(State Key Laboratory of Petroleum Resource and Prospecting//China University of Petroleum,Beijing 102249,China;College of Geosciences,China University of Petroleum,Beijing 102249,China)

机构地区：[1]油气资源与探测国家重点实验室·中国石油大学(北京) [2]中国石油大学(北京)地球科学学院

出　　处：《天然气工业》2022年第7期31-44,共14页Natural Gas Industry

基　　金：国家自然科学基金项目“陆相湖盆细粒沉积岩多尺度纹层结构与微观孔隙结构特征关联性研究及其测井评价新方法”(编号:42002133);中国石油大学(北京)科研启动基金项目“基于纹层结构的页岩油甜点高分辨率测井评价”(编号:2462021YXZZ003);中国石油—中国石油大学(北京)战略合作科技专项项目“准噶尔盆地玛湖中下组合和吉木萨尔陆相页岩油高效勘探开发理论及关键技术研究”(编号:ZLZX2020-01-06-01)。

摘　　要：测井地质学方法理论体系在基础地质、石油地质和工程地质等领域得到广泛应用,但不同测井系列对地质信息响应敏感性的差异、多重测井信息地球物理属性与岩石地质成因不对应性等都将导致测井地质学研究过程中常出现误区,亟需解剖测井地质学研究中的典型错误案例以探索相应的科学思维与对策。为此,在分析测井地质学研究中存在的典型误区的基础上,分析了不同测井系列纵向分辨率尺度及其与探测深度的矛盾,阐明了不同尺度数据融合的重要性,明确了引起测井“伪资料”的因素及其对解释评价的影响,并提出了一套针对地质解释测井评价的思路。研究结果表明:①测井地质学研究中的典型误区可归纳为地质体解释和储层属性参数计算两个方面误区;②高密度、高电阻率泥岩等特殊地质现象会导致测井资料的多解性,测井地质解释时应注重其岩石物理响应机理;③非常规油气测井评价需要电成像、偶极声波和核磁共振测井等新技术的融合,且岩心资料的刻度以及地质思维的融入可提高解释精度;④在测井井旁构造解析、沉积学响应、地应力评价以及裂缝识别等过程中,应融合地质思维,来规避不同地质现象在测井上的同一响应导致的测井解释误区。结论认为,从地质到测井再到地质,从实践到认识再到实践,从“一孔之见”到“一孔百见”的辩证和系统性思维,可以为测井地质学综合研究提供科学思路。The method and theorectical system of well logging geology has been widely used in the fields of basic geology,petroleum geology and engineering geology,but the different response sensitivity of different logging series to geological information and the mismatching between geophysical properties of multiple well logs and geological genesis of rocks frequently result in misunderstandings in the research process of well logging geology.Therefore,it is in an urgent need to analyze the typical misunderstanding cases in the research of well logging geology and explore the corresponding scientific ideas and countermeasures.After analyzing the typical misunderstandings in the research of well logging geology,this paper investigates vertical resolution scale of various logging series and its contradiction with detection depth and illustrates the importance of the integration of different scales of data.In addition,the factor inducing"fake logging data"and its influence on interpretation evaluation are clarified and a set of ideas for logging evaluation of geological interpretation is put forward.And the following research results are obtained.First,the typical misunderstandings in the research of well logging geology can be classified into categories,namely geological body interpretation misunderstanding and reservoir property parameter calculation misunderstanding.Second,special geological phenomena,such as high density and high resistivity mudstone can lead to logging data ambiguity,so attention shall be paid to petrophysical response mechanisms during geological logging interpretation.Third,to carry out logging evaluation of unconventional oil and gas,it is necessary to integrate new technologies of electric imaging logging,dipole acoustic logging and nuclear magnetic resonance logging,and the calibration of core data and the integration of geological ideas can improve the interpretation accuracy.Fourth,In the process of borehole structural logging analysis,sedimentological response,in-situ stress evaluation and fract

关 键 词：测井地质学 测井系列 特殊地质现象 多解性 岩石物理响应机理 新技术融合 综合解释 误区与对策 

分 类 号：P631.81[天文地球—地质矿产勘探] P618.13[天文地球—地质学]