中国地质2018，Vol.45Issue(2)：304-318,15.DOI:10.12029/gc20180207
基于测井资料的辫状河三角洲沉积储层精细描述
Detailed description of the sedimentary reservoir of a braided delta based on well logs
摘要
Abstract
The sedimentary reservoir of Lower Cretaceous Bashijiqike Formation in Kuqa depression was studied by making full use of core observation as well as conventional and image logs.The results show that the Bashijiqike Formation was formed in the sedimentary facies zone of braided delta front subfacies,of which the underwater distributary channel and mouth bar depositional microfacies constitute the main framework of sandbodies.A suite of recognition models for typical lithologies and sedimentary structures were built by core-log calibration methods.Then the well logging recognition and division standards were built,and the control of depositional microfacies on reservoir quality was discussed.The depositional microfacies were further divided into lithologies and lithofacies such as medium-grained sandstones of underwater distributary channel and fine-grained sandstones of underwater distributary channel based on the medium grain size and compositional maturity index.In addition,the logging evaluation methods of medium grain size and compositional maturity index were built.At last,the vertical distribution law of lithologies and lithofacies in single wells were figured out by making full use of image logs,shapes of conventional logs and core observations as well as the logging calculation of medium grain size and compositional maturity index.The research results lay a solid foundation for detailed description of sedimentary reservoir as well as the natural gas exploration and development in the future.关键词
辫状河三角洲前缘/成像测井/沉积微相/巴什基奇克组/库车坳陷Key words
braided delta/image logs/sedimentary microfacies/Bashijiqike Formation/Kuqa depression分类
能源科技引用本文复制引用
赖锦,韩能润,贾云武,季玉山,王贵文,庞小娇,贺智博,王松..基于测井资料的辫状河三角洲沉积储层精细描述[J].中国地质,2018,45(2):304-318,15.基金项目
国家自然科学基金(41472115)、国家科技重大专项(2011ZX05020-008、2016ZX05019-005-007).Supported by National Natural Science Foundation of China (No.41472115)and National Science and Technology Major Project (No.2011ZX05020-008,2016ZX05019-005-007). （41472115）
