胜利油区车古20潜山储层岩石物理特征

胜利油区车古20潜山在下古生界碳酸盐岩地层中发现商业油气流,为了揭示该潜山油藏分布规律,以岩心分析、测试资料研究为基础,充分利用测井资料对潜山储层岩石物理特征进行系统研究:应用测井资料,采用模糊数学方法,建立识别碳酸盐岩储层岩性模型,划分储集岩和非储集岩;利用大岩样校正小岩样,与测井解释有效孔隙度建立关系,求取有效孔隙度;利用双侧向电阻率,在识别裂缝类型基础上,建立裂缝孔隙度解释模型;根据不同裂缝类型,利用双侧向测井资料,建立流体饱和度解释模型;综合上述情况,制定有效厚度划分标准.应用实测资料对所建模型进行可行性评价,达到较高的符合一致性,取得理想效果.

Petrophysical Feature of Reservoir in Chegu 20 Buried Hill of Shengli Oilfield

The Petrophysical study of carbonate rocks is very importance in Chegu 20 buried hill of Shengli Oilfield, because commercial oil and gas flow has been discovered in carbonate reservoir. Based on the characteristics of oil and gas reservoir, the paper introduces the thinking and methodology for making successful petrophysical study-identifying reservoir rocks and non-reservoir rocks by fuzzy mathematics using logging data on the basis of core analysis and test information; establishing the explanting model of the effective porosity and the crack porosity; establishing the model of saturation by deep and sallow lateroresistivity of logging data base on the different crack types; establishing partition standard of effective thickness on the basis of these study data. The study can not only play an important role in further researching this buried hill reservoir in the area, also offer a kind of train of thought and method for this kind of reservoir.