物探与化探2024，Vol.48Issue(3)：629-639,11.DOI:10.11720/wtyht.2024.1289
川中地区茅口组碳酸盐岩储层类型测井识别
Log-based identification of the types of the Maokou Formation carbonate reservoirs in the central Sichuan Basin
摘要
Abstract
The Maokou Formationcarbonate reservoirs in the central Sichuan Basinexhibit well-developed dissolutionpores,vugs,and fractures,pronounced heterogeneity,and diverse types.This study aims to identify their types and establish the log-based identification criteria for various reservoir types.First,this study classified the reservoir types based on the analysis of casting thin sections,core photos,and micro-resistivity imaging logs.Moreover,it determined the conventional log response characteristics of different reservoir types.Finally,it conducted log-based identification of reservoir types using the fracture porosity(φf)-secondary porosity index(RP)cross-plotting method.The results are as follows:(1)The Maokou Formation carbonate reservoirs in the central Sichuan Basin can be-classified into four types,i.e.,fractured-vuggy,fractured-porous,porous-vuggy,and matrix porous reservoirs;(2)Fracture porosities calculated from different models are more similar in the case of more developed fractures,and dissolution pores and vugscan affect the fracture porositycalculation results to some extent;(3)The φf-RP cross-plotting method can effectively identify reservoir types.These research results provide technical support for the log-based identification of carbonate reservoir types.关键词
茅口组/酸盐岩储层/储层类型划分/测井识别Key words
Maokou Formation/carbonate reservoir/reservoir type classification/log-based identification分类
能源科技引用本文复制引用
刘宇,王亮,罗洋,苏树特,姚蔺芳,刘瑜超,周纯润,胡梦蝶..川中地区茅口组碳酸盐岩储层类型测井识别[J].物探与化探,2024,48(3):629-639,11.基金项目
国家自然科学基金项目"热液作用下的深部含铀油蚀变砂岩地球物理响应及铀油监探方法"(U2003102) （U2003102）
国家科技重大专项"四川盆地大型碳酸盐岩气田开发示范工程"(2016ZX05052) （2016ZX05052）
