CHARACTERISTICS OF FLUID INCLUSIONS IN THE SHIWANDASHAN BASIN OF GUANGXI PROVINCE AND ITS APPLICATION IN PETROLEUM GEOLOGY
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摘要: 荆丘油田是一个构造相对简单、油层多而厚度大的未饱和层状油藏,经过10多年的开发而处于高含水开发阶段。为了挖掘开发中后期的潜力开展了精细油藏描述。根据荆丘油田的实际特点,描述工作以储层为主,进行了纵向沉积单元细分、沉积岩石微相、厚油层层内非均质特征、岩石物理相和剩余油分布等研究。工作中,首次利用神经网络模拟预测储层的物性、沉积、成岩参数,分析并定量表征了沉积岩石微相,进一步对岩石物理相及剩余油分布等展开深入研究,为改善油藏开发效果提供了可靠的地质基础,并通过实施取得了良好效果。Abstract: The Jingqiu oilfield is coomprised of an unsaturated layer-shaped oil reservoir with simple structure, multi-oil-bearing formation and big thickness.It has been in high water cut stage as it has been developed for more than ten years.The fine oil-reservoir descripton has been applied in order to evaluate its potentials in the middle and late period of development. In according with its own feature, the description was mainly focused on the reservoir itself including fractionizing sedimentation cell, sedimentary and petrographic microfacies, features of heterogeneity of thick oil layers, petrophysical facies, and distribution of remaining oil, etc. The nerve-network method was used for the first time to simulate and to predict the parameter of physical property, sedimentation and diagenic metamophism, and quantitatively pointed out sedimentary-petrography microfacies. The study of petrophysical facies and the distribution of the remaining oil provided geological foundation for impro-ving its development, and gained good result in the developing implementation
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