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三塘湖盆地马朗凹陷芦草沟组云质岩油藏属于自生自储式源岩油藏,储层基质孔隙度2-7%,渗透率<0.05mD,属于非常规致密油藏。主要以多口出油井储层研究为基础,充分利用现有的钻井、测井资料和地震数据,井震结合寻找储层敏感性地震参数。根据裂缝检测理论和油气检测理论,运用裂缝分析和烃类检测分析等方法,对芦草沟组云质岩非常规储层进行综合预测。理清了裂缝有利发育部位与烃类检测有利区叠合部位即为有利储层的分布区。
The Lucaogou Formation dolostone reservoir in the Malang Sag of the Santanghu Basin belongs to a self-generating self-storage source rock reservoir with a porosity of 2-7% and a permeability of <0.05mD, which belongs to an unconventional tight oil reservoir. Based on the study of multi-well reservoirs, the authors make full use of existing drilling, well logging data and seismic data, and well-seismic combining to find reservoir-sensitive seismic parameters. According to the theory of fracture detection and the theory of oil and gas detection, the unconformity prediction of unconformity reservoirs in Lucaogou Formation is carried out by means of fracture analysis and hydrocarbon detection and analysis. It is clear that the fractured favorable development site and the favorable area of hydrocarbon detection coincide with the favorable reservoir distribution area.