松辽盆地北部嫩江组一段源岩排烃特征及潜力评价  

Hydrocarbon-expulsion Characteristics and the Potential Resource Evaluation of Source Rocks from the First Member of Nenjiang Formation of Northern Songliao Basin

作　　者：马中振 庞雄奇[2] 付秀丽[3] 戴国威[3] 

机构地区：[1]中国石油天然气勘探开发公司 [2]中国石油大学盆地与油藏研究中心 [3]大庆油田有限责任公司勘探开发研究院,黑龙江大庆1637122

出　　处：《石油天然气学报》2008年第3期24-28,共5页Journal of Oil and Gas Technology

基　　金：国家重点基础研究发展计划("973"计划)项目(2006CB202300)

摘　　要：随着勘探程度的加深,松辽盆地北部增储上产的难度逐渐加大,其主力源岩层嫩一段排烃特征及资源潜力的研究亟待加强。依据排烃门限理论,利用生烃潜力法对松辽盆地北部嫩一段源岩排烃特征进行详细研究并对其资源潜力进行了评价。研究表明,嫩一段源岩排烃门限深度为1000m,在1450m达到最大排烃速率38.35mg/(g.100m),地质过程中累计排烃量为142.04×108t,主要排烃期为明水组和泰康组沉积时期,嫩一段源岩远景资源量为56.8×108～85.2×108t,平均为71.0×108t。因此,嫩一段作为松辽盆地主力源岩层具有良好的资源勘探潜力,齐家古龙凹陷和三肇凹陷2个排烃中心周围区域具有很大的勘探潜力。With the deepening of hydrocarbon exploration,simulation in the upper position of Songliao Basin was more and more difficulty,it was badly needed to strengthen the study of hydrocarbon-expulsion characters and hydrocarbon potential in the first member of Nenjiang Formation.Based on the theory of hydrocarbon expulsion threshold,method of hydrocarbon generation was used to evaluate the hydrocarbon-expulsion characters and hydrocarbon potential in the first member of Nenjiang Formation of Songliao Basin.The study shows that its depth of hydrocarbon expulsion is 1000m,at 1450m the highest expulsion rate is 38.35mg(g.100m),geologically the cumulated expulsion rate is 142.04×108t.main expulsion periods are at depositional periods of Mingshui Formation and Taikong Formation.The total reserves are from 56.8×108t to 85.2×108t,the average rate is 71.0×108t.Therefore,its main hydrocarbon source rocks have good hydrocarbon potential,around the center of Qijia-Gulong and Sanzhao Depressions,there exist a great hydrocarbon potential of exploration.

关 键 词：松辽盆地北部 嫩江组一段 排烃特征 排烃门限 资源评价 

分 类 号：P618.13[天文地球—矿床学]