Typical misinterpretations and scientific concepts in well-logging geologic studies

• DOI: 10.1016/j.ngib.2023.02.003
• Publication Date: 2023-03-16T14:01:44Z
• Authors: Jin Lai; Xiaojiao Pang; Xin Zhao; Yidi Zhao; Guiwen Wang; Yuyue Huang; Hongbin Li; Yuhang Li
• Keywords: Petrophysics; Formation evaluation

The method and theoretical system of well logging geology have been widely used in the fields basic geology, petroleum engineering but different response sensitivity series to geological information mismatching between geophysical properties multiple logs genesis rocks frequently result misunderstandings research process geology. Therefore, it is an urgent need analyze typical misunderstanding cases explore corresponding scientific ideas countermeasures. After analyzing this paper investigates vertical resolution scale various its contradiction with detection depth illustrates importance integration scales data. In addition, factor inducing "fake data" influence on interpretation evaluation are clarified a set for put forward. And following results obtained. First, can be classified into two categories, namely body reservoir property parameter calculation misunderstanding. Second, special phenomena, such as high-density high-resistivity mudstone lead data ambiguity, so attention shall paid petrophysical mechanisms during interpretation. Third, carry out unconventional oil gas, necessary integrate new technologies electric imaging logging, dipole acoustic nuclear magnetic resonance calibration core improve accuracy. Fourth, borehole structural analysis, sedimentary response, geostress fracture identification, integrated avoid caused by same phenomena logs. conclusion, dialectical systematic thinking from then practice recognition "a narrow view" broad provide comprehensive