大民屯凹陷源控油气作用及有利勘探区带预测  

Hydrocarbon-Controlling Function of Source Rock and Prediction of Favorable Exploration Zone in the Damintun Depression

作　　者：李建华[1,2] 宋兵[1,2] 庞雄奇[1,2] 张占文 耿辉[4] 

机构地区：[1]中国石油大学(北京)盆地与油藏研究中心,北京102249 [2]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [3]中国石油天燃气股份有限公司辽河油田分公司,辽宁盘锦124010 [4]中国石油天然气集团公司东方地球物理勘探有限公司研究院,河北涿州072750

出　　处：《科技导报》2011年第30期18-23,共6页Science & Technology Review

基　　金：国家重点基础研究发展计划(973计划)项目(2006CB202308)

摘　　要：为评价大民屯凹陷剩余资源潜力,指出有利勘探区带,研究了大民屯凹陷的源控油气作用,即大民屯凹陷有效烃源岩对油气的来源特征、主要成藏期次、油气分布范围和资源潜力的控制作用。结合油气成藏体系和地质门限控烃理论,评价了大民屯凹陷各个油气成藏体系的排烃量、资源量和剩余资源量。大民屯凹陷划分为上、下两套成藏组合,10个油气成藏体系,总的排烃量为14.66×108t,资源量为6.34×108t,剩余资源量为3.098×108t,勘探前景较大;其中,最有利的勘探区带有3个,分别为成藏体系为Ⅰ下、Ⅲ上和Ⅱ上,剩余油气资源量分别为1.163×108,0.567×108和0.409×108t。In order to evaluate the residual oil and gas resources and identify the favorable exploration areas, the hydrocarbon-controlling function of hydrocarbon source rocks in Damintun Depression is studied in this paper. The origin, the accumulation period, the distribution extent and resource potential of oil and gas in Damintun Depression are found to be controlled by the effective hydrocarbon source rocks. The volumes of hydrocarbon expulsion, the resources and the residual resources are calculated based on the theories of the hydrocarbon accumulation system and the hydrocarbon-controlling function of the geological threshold. The Damintun Depression is divided into two reservoir-forming combinations of the upper and the lower parts, with a total of ten hydrocarbon accumulation systems. The total volumes of hydrocarbon expulsion are 14.66×10^8t, the volumes of the resources are 6.34×10^8t and the volumes of the residual resources are 3.098×10^8t. There are three most favorable exploration areas, including the hydrocarbon accumulation system Ilowey, the hydrocarbon accumulation system IIIo~ and the hydrocarbon accumulation system IIapper. Their volumes of residual resources are, respectively, 1.163×10^8, 0.567×10^8 and 0.409×10^9t.

关 键 词：源控油气作用 成藏体系 地质门限 资源评价 大民屯凹陷 

分 类 号：P618.13[天文地球—矿床学]