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我国碳酸盐岩分布面积广泛,从震旦纪到三迭纪各地质时代均有分布,并见有不同程度的油气显示。在四川盆地碳酸盐岩中已获工业性气流,在华北已发现碳酸盐岩古潜山油田等,但海相碳酸盐岩原生油藏,目前在国内尚没有发现。句容坳陷位于江苏南部,共构造位置属下扬子—南黄海盆地。该坳陷发育了以海相沉积为主的中、古生界地层,不仅广泛见到油气显示,而且共句容构造上的容2、3井在三迭系下青龙组碳酸盐岩储层中首次获得了工业油流。根据观察分析,句容原油呈棕褐、墨绿色,此重为0.8063-0 8833,含蜡量低(容3井下青龙组原油含蜡量为3.8％),含硫量中等(0.37-0.53％)、含氮量低(365ppm)、钒/镍此
The distribution of carbonate rocks in our country is widespread. From the Sinian to the Triassic, the geologic age has been distributed, and the oil and gas shows to varying degrees. Industrial gas flow has been obtained from carbonate rocks in the Sichuan Basin and carbonate buried hill oil fields have been found in northern China. However, the marine carbonate carbonate crude oil reservoirs have not yet been discovered in China. Jurong depression is located in southern Jiangsu, a total structure of the Yangtze-South Yellow Sea basin. In this depression, marine and sedimentary-dominated Meso-Paleozoic strata are developed. Not only are oil and gas displays widely seen, The first layer of industrial oil flow. According to the observation and analysis, Jurong crude oil is dark brown and dark green with a weight of 0.8063-0 8833, a low wax content (crude wax content of 3.8% in Qinglong Formation of Yung-3), moderate sulfur content (0.37-0.53% ), Low nitrogen content (365ppm), vanadium / nickel this