阜新盆地东梁区浅层致密砂岩气气源岩特征  

CHARACTERIZATION OF SOURCE ROCK OF SHALLOW TIGHT SAND GAS IN DONGLIANG DISTRICT IN THE FUXIN BASIN

作　　者：朱志敏[1] 陈岑 孙祥[3] 

机构地区：[1]中国地质科学院矿产综合利用研究所,成都610041 [2]辽宁有色地质勘查研究院,沈阳110002 [3]辽宁工程技术大学资源与环境工程学院,辽宁阜新123000

出　　处：《地质找矿论丛》2007年第1期71-75,共5页Contributions to Geology and Mineral Resources Research

摘　　要：为了解阜新盆地浅层致密砂岩气成藏条件,应用有机岩石学和有机地球化学方法,对气源岩特征开展研究。认为该区浅层致密砂岩气气源岩为沙海组四段泥岩、沙海组三段煤层和泥岩;气源岩厚度大且埋藏浅(<1500 m),有机质丰度高(TOC>2%),生烃潜力强;有机质类型沙海组四段为Ⅲ(偏ⅡB)型干酪根,沙海组三段为Ⅲ型干酪根;气源对比显示沙海组三段和沙海组四段气源岩与沙海组三段浅层致密砂岩气同源,浅层致密砂岩气紧邻源岩。表明研究区气源岩能生成大量天然气,利于形成浅层致密砂岩气藏。In order to know the conditions of shallow tight sand gas reservoir formation, the gas-source rock was studied in Dongliang district in the Fuxin basin on the basis of organic petrological and geochemical study. The source rock is mudstone of the fourth member and mudstone and coal-bed of the third member of Sahai Formation. The source rock is thick and buried shallowly （〈1 500 m）with high organic matter （TOC〉2%） and kerogen type Ⅲ and Ⅱ B. Gas source correlation shows that the gas of Sahai formation and shallow tight sand is allied. The gas host and the source rocks occur closely together indicating that it is favorable for the huge volume of gas generated by the source rock to form gas reservoir in the shallow tight sand.

关 键 词：浅层致密砂岩气 气源岩 沙海组 阜新盆地 

分 类 号：P618.130.21[天文地球—矿床学]