天然气勘探与开发2023，Vol.46Issue(4)：148-153,6.DOI:10.12055/gaskk.issn.1673-3177.2023.04.015
烃源岩测井响应特征及定性识别方法
Well-logging response characteristics and qualitative identification of source rocks:An example from Maokou 1 Member,southeastern Sichuan Basin
摘要
Abstract
Quickly and accurately identifying source rocks through well-logging data is the main thing in source-rock evaluation.The source rocks of Middle Permian Maokou 1 Member in southeastern Sichuan Basin feature strong heterogeneity and difficulty in lith-ological identification.So,for the Maokou 1 source rocks,the logging response characteristics were clarified by using core data cali-brated with logging data.In addition,three methods such as sensitive log superposition,crossplot and ratio were employed for quali-tative source-rock identification and evaluation.Results show that(i)the logging response of quality source rocks is characterized by two-high in acoustic wave and neutron as well two-low in density and resistivity;(ii)among these three methods,superposition and crossplot are simple and easy to do in this identification,but achieving a poor effect in the other source rocks rich in shale content.However,another method of acoustic time to resistivity ratio is a rapid and effective option;and(iii)after logging-data processing and core correlation conducted for 3 wells in the study area,the qualitative source-rock identification accuracy reaches 92%by using the ratio method.关键词
烃源岩/中二叠世/定性识别/叠合法/比值法/四川盆地Key words
Source rock/Middle Permian/Qualitative identification/Stacking method/Ratio method/Sichuan Basin引用本文复制引用
程丽,严伟,王昆..烃源岩测井响应特征及定性识别方法[J].天然气勘探与开发,2023,46(4):148-153,6.基金项目
中石化科技部项目"四川盆地二叠系海相页岩气富集高产主控因素及目标评价"(编号:P22135). （编号:P22135）
