临清坳陷上古生界煤成气资源评价  

Evaluation of Coal-derived Gas Resources in Upper Paleozoic in Linqing Depression

作　　者：杨思迪 周瑶琪[1] 胡小成 

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580

出　　处：《中州煤炭》2015年第4期116-119,共4页Zhongzhou Coal

基　　金：全国油气资源战略选区调查与评价项目(2009-GYXQ17)

摘　　要：临清坳陷上古生界发育良好的烃源岩,由于其经历了多期次、不同规模盆地的叠合,其间又经历多期次的抬升、剥蚀与改造,上古生界烃源岩生烃过程十分复杂。录井和岩心资料表明,临清坳陷上古生界山西组和太原组发育有3类烃源岩:煤岩、炭质泥岩和湖相泥岩,其中以煤岩和炭质泥岩生烃条件较好。印支期是华北盆地古生界的一次生烃期,但演化程度不高,油气生成和排烃运移量有限;燕山晚期—喜山期的再次大面积沉陷背景下,发生二次生烃,其演化程度因后期古近纪的沉积、埋藏而不同。采用热模拟产烃率法估算了临清坳陷上古生界各主要凹陷的煤成气资源量。The upper Paleozoic in the Linqing depression has high quality source rock. Linqing depression undergone multi-stage evolution,strata uplift,strata denudation,strati-graphic reconstruction,so it＇s upper Paleozoic source rock maybe have multi-stage hydro-carbon generating process. Logging and core data indicates that,Shanxi formation and Taiyuan formation of upper Paleozoic in Linqing depression develops three kinds of hydro- carbon source rocks： coal,carbonaceous mudstone and lake facies mudstone. Indosinian period is a period of primary hydrocarbon in North China Basin Paleozoic with low evolution degree and expulsion amount of hydrocarbon. Secondary hydrocarbon generation began in Yanshan period to the Himalayan period,and it＇s evolution degree depends on deposition and burial diagenesis in Paleogene Period. By thermal simulation method of the hydrocarbon generation rate,a calculation was made on coal-derived gas resource in upper Paleozoic in major sags of Linqing depression.

关 键 词：临清坳陷 上古生界 生烃史 煤成气 资源评价 

分 类 号：P618.11[天文地球—矿床学]