南黄海盆地南五凹油气资源潜力再评价——基于生烃动力学数值模拟方法

发布时间：2018-05-15 01:19

本文选题：南黄海盆地 + 南五凹　；参考：《中国海上油气》2017年01期

【摘要】：南黄海盆地南部坳陷南五凹至今无商业油气发现,前人对其油气资源前景的评价也较差,而邻区与其地质背景相似的苏北盆地高邮凹陷截至2011年底已发现探明石油地质储量2亿t。为了进一步阐明南五凹的油气资源潜力,采用目前国际上通用的生烃动力学方法模拟烃源岩的生排烃史。通过烃源岩岩屑和原油沥青质样品的热模拟实验数据计算生烃动力学参数,并以原油储量的成熟度分布数据进行验证。研究结果表明,南五凹阜宁组烃源岩的生烃活化能仅为209 k J/mol,低于典型湖相烃源岩的生烃活化能,烃源岩在低熟阶段就可以大量生烃,具有早生、早排的特点;南五凹的排烃量可达29.5亿m~3,石油地质资源量约为2.7亿~4.1亿m~3,资源潜力可与苏北盆地高邮凹陷媲美,下一步应选择汇油面积大、圈闭条件好的构造实施钻探。
[Abstract]:No commercial oil and gas have been found in South five sag South depression of South Huanghai basin to the present, and the future of oil and gas resources in the Gaoyou depression, similar to its geological background, has been found by the end of 2011, and the oil and gas reserves of 200 million T. have been discovered by the end of 2011 in order to further clarify the potential of oil and gas resources in the South five concave. The general hydrocarbon generation kinetics method is used to simulate the history of hydrocarbon generation and expulsion of source rocks. The kinetic parameters of hydrocarbon generation are calculated by the thermal simulation experimental data of source rock and crude oil asphaltene samples, and the data of maturity distribution of crude oil reserves are verified. The results show that the hydrocarbon generation activation energy of the source rocks of the South five concave Funing formation is only 209 K J/mol, Under the hydrocarbon generation activation energy of the typical lacustrine source rocks, the hydrocarbon source rocks can produce a large amount of hydrocarbon generation in the low maturity stage and have the characteristics of early generation and early row. The amount of hydrocarbon expulsion of the South five concave can reach 2 billion 950 million m~3, the petroleum geological resources are about 270 million ~4.1 billion m~3, and the potential of the resources can be comparable to the Gaoyou sag in the northern Jiangsu Basin. The next step should be to select the large oil sink area and trap conditions. A good structure implements drilling.

【作者单位】：中海油研究总院;中国石油大学(北京)地球科学学院;
【基金】：“十二五”国家科技重大专项“近海富烃凹陷资源潜力再评价和新区、新领域勘探方向(编号:2011ZX05023-001)”部分研究成果
【分类号】：P618.13

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