中国碳酸盐岩油气藏探明储量分布特征

Distribution Features of Proved Reserves of Carbonate Oil and Gas Pools in China

通过对我国1465个碳酸盐岩油气藏(或储量计算单元)探明储量的统计分析研究,提出了"生储组合分类法",并把这些碳酸盐岩油气藏类型划分为湖相型、海生海储型、新生古储型和新生新储型四类。石油地质储量以海生海储型和新生古储型为主,分别占碳酸盐岩油气藏石油总储量的40.11%和37.12%;天然气地质储量则以海生海储型独占绝对优势,占碳酸盐岩油气藏天然气总储量的93.28%。从油公司、盆地、层系、埋深以及油品等多角度进行了探明储量分布特征的研究,揭示了各种分布规律。

Carbonate reservoirs are divided into 4 types, including lacustrine carbonate reservoir one, marine source-marine reservoir one, young continental source-old marine reservoir one, and young continental source-young marine reservoir one, by employing statistics of 1465 carbonate oil and gas pools （or reserve calculation units） in China. The marine source-marine reservoir type and the young continental source-old marine reservoir type give priority to proved oil reserves in place, leave each other account for 40.11% and 37.12% in general. The marine source-marine reservoir type monopolizes absolute predominance to proved gas reserves in place, occupy 93.28% in all. The distribution of proved reserves from petroleum corporations, basins, geological ages,buried depths and oil ranks reveal many distributing rules. This research has some signification for direction of petroleum exploration in carbonate rocks and is favorable for increasing benefit of exploration.