南华北地区二叠系烃源岩分布及地化特征  

DISTRIBUTION AND GEOCHEMICAL CHARACTERISTICS OF PERMIAN SOURCE ROCKS IN THE SOUTHERN NORTH-CHINA

作　　者：林小云[1] 陈倩岚[1] 李静[1] 

机构地区：[1]油气资源与勘探技术教育部重点实验室(长江大学)长江大学地球科学学院,湖北荆州434023

出　　处：《海洋地质前沿》2011年第4期21-26,共6页Marine Geology Frontiers

基　　金：全国油气资源战略选区调查与评价专项(XQ-2007-02-3-3)

摘　　要：南华北地区二叠系烃源岩主要发育于太原组、山西组、下石盒子组和上石盒子组,以煤系烃源岩为主。通过对各类烃源岩丰度、类型和成熟度的分析认为,煤系泥岩为主要的有效烃源岩,太原组、山西组和下石盒子组有机质丰度较高;母质类型以Ⅲ型(腐殖型)为主,也有少量Ⅱ2型(腐泥腐殖型);二叠系下统有机质处于过成熟—成熟阶段,中上统处于低成熟—成熟阶段,具有较高生烃潜力。The coal prone source rocks are well developed in Southern North China in the Permian deposits of Taiyuan Formation,Shanxi Formation,and Lower and Upper Shihezi Formations.The abundance,type and maturity of source rocks indicate that coal measure bearing mudstone is the main effective source rock.The Taiyuan Formation,Shanxi Formation,and Lower Shihezi Formation are all high in the abundance of organic matters,of which the matrix belongs to the type III（humic type） with little of typeⅡ2（sapropelic-humic type）.The Lower Permian organic matters are matured or even over matured,but Upper Permian ones non-matured or just matured.Therefore,the Upper Permian in this region is high in hydrocarbon generation potential.

关 键 词：南华北地区 二叠系 有效烃源岩 地化特征 

分 类 号：P618.130.2[天文地球—矿床学]