盐间非砂岩有效烃源岩体特征及油气资源潜力  

Distributing charactes of effective source rock and oil & gas resource potential in inter-salt non-sandstone in the Qianjiang depression

作　　者：周文斌[1] 旷理雄[2] 江继刚[3] 李广才[3] 宋阳[3] 

机构地区：[1]中南大学信息与物理工程学院,湖南长沙410083 [2]中南大学地学与环境工程学院,湖南长沙410083 [3]中国石化江汉油田分公司勘察开发研究院,湖北潜江433124

出　　处：《合肥工业大学学报（自然科学版）》2008年第1期100-104,共5页Journal of Hefei University of Technology：Natural Science

基　　金：;国家专项课题资助项目(zp-c-02-06)

摘　　要：潜江凹陷潜江组盐间非砂岩油藏是少见的特殊类型油藏。从有效烃源岩评价的角度,利用盆地模拟法,综合分析了潜江凹陷潜江组盐间非砂岩段有效烃源岩体分布特征、生烃量及油气资源潜力,提出了下一步油气勘探方向;分析结果表明,盐间非砂岩段未熟有效烃源岩体有机碳质量分数下限值为0.60%,成熟有效烃源岩体有机碳质量分数下限值为0.40%;盐间非砂岩段有效烃源岩厚度大,有机质丰度较高,生油母质好,且主要分布于蚌湖向斜和吊堤口向斜,有效烃源岩主体处于成熟-高成熟阶段,其生油中心位于蚌湖向斜和吊堤口向斜;剩余资源潜力较大,且主要分布于王广油气聚集区,其剩余资源量约4 000×104t;最有利的油气勘探区带为王广油气聚集区。Inter-salt non-sandstone reservoir in the Qianjiang depression is an exceptional particular res ervoir all over the world. Based on effective source rock assessment, this paper analyzes the characters of effective source rock in inter-salt non-sandstone of the Qianjiang depression, the amount of hydrocarbon generation and the oil ＆ gas resource potential by using the methods of basin modeling, and the best plays for prospecting are evaluated. The results are as follows： in inter-salt non-sandstone, the lower limit of content of organic matters in immature effective source rock is 0.60% and the lower limit of content of organic matters in mature effective source rock is 0.40%; the thickness of effective source rock in inter-salt non sandstone is larger, the abundance of organic matters is high, the types of organic matters are better, the effective source rock is mainly located in the Banghu syncline and the Diaotikou syncline with the main effective source rock being at the stage from maturity to high maturity, and the center of hydrocarbon generation is also mainly located in the Banghu syncline and the Diaotikou syncline; the residual potential of oil ＆ gas resource in inter-salt non-sandstone of the depression is bigger, which is mainly located in the Wangguang oil ＆ gas accumulation play with the residual resource of oil ＆ gas being about 4 000 × 10^4t; the best play is the Wangguang oil ＆ gas accu mulation play.

关 键 词：盐湖盆地 盐间非砂岩 有效烃源岩 资源潜力 盆地模拟 潜江组 潜江凹陷 

分 类 号：P618.130.2[天文地球—矿床学]