The classification and significance of fine-grained deposits of micro-laminae rich in unconventional oil and gas resources  

作　　者：Li DONG Ying LI Dongdong WANG Haiyan LIU Guangzeng SONG Zengxue LI Fanfei KONG Lusheng YIN 

机构地区：[1]Petroleum Exploration and Production Research Institute,Sinopec,Beijing 102206,China [2]Shandong Provincial Key Laboratory of Depositional Mineralization&Sedimentary Minerals,Shandong University of Science and Technology,Qingdao 266590,China [3]Shandong Jiaotong University,Jinan 250357,China [4]School of Water Conservancy and Environment,University of Jinan,Jinan 250022,China

出　　处：《Frontiers of Earth Science》2022年第3期635-656,共22页地球科学前沿（英文版）

摘　　要：In this study,an in-depth analysis of the types,characteristics,and formation mechanisms of microlaminae and microscopic laminae was conducted in order to precisely examine the link or intersection of stratigraphy and petrology.This study was essentially a sedimentary examination of the minuteness-macro and micro-tiny layers between laminae and pore structure,as well as the types of structures and sedimentation.The results of this study bear important basic subject attributes and significance,as well as practical value for the basic theories and exploration applications of unconventional oil and gas geology.The quantitative data were obtained using the following:field macroscopic observations;measurements;intensive sampling processes;XRD mineral content analysis;scanning electron microscopy;high-power polarizing microscope observations;and micro-scale measurements.The quantitative parameters,such as laminae thicknesses,laminae properties,organic matter laminae,and laminae spatial distributions were unified within a framework,and the correlations among them were established for the purpose of forming a fine-grained deposition micro-laminae evaluation system.The results obtained in this research investigation established a basis for the classification of micro-laminae,and divided the micro-laminae into four categories and 20 sub-categories according to the development thicknesses,material compositions,organic matter content levels,and the spatial distributions of the micro-laminae.The classification scheme of the micro-laminae was divided into two categories and 12 sub-categories.Then,in accordance with the comprehensive characteristics of spatial morphology,the micro-laminae was further divided into the following categories:continuous horizontal laminae;near horizontal laminae;slow wavy laminae;wavy laminae;discontinuous laminae;and lenticular laminae.According to the structural properties of the laminae development,the micro-laminae was divided into the following categories:single laminae structures;laminated lam

关 键 词：fine-grained deposits recognition of laminae types microscopic laminae recognition of fine laminae laminae origins 

分 类 号：P53[天文地球—古生物学与地层学]