利用复杂孔隙结构参数研究储层油水分布规律

RESEARCHES ON THE OIL-WATER DISTRIBUTION LAWS OF THE RESERVOIRS BY COMPLEX PORE STRUCTURE PARAMETERS

葡萄花油层组油水关系复杂,不但存在上油下水、油水同层的情况,而且存在低电阻率油层。因此,首先从泥质、钙质含量等方面分析了葡萄花油藏孔隙结构客观存在的复杂性,然后利用压汞实验数据证实储集层孔隙结构是油气聚集成藏的重要条件。最后,通过建立储层孔隙结构参数与含油性质关系揭示了葡萄花油层油水分布特征,形成的规律性认识为研究区葡萄花油层的识别、开发提供了可靠依据。

The relationship of the oil and water in Putaohua reservoir group is complex. In detail, it is characterized by oil upside, water downside, and the eostrata between oil and water; but also low-resistivity oil reservoirs. Therefore, from the viewpoints of the contents of mud and calcium, the complexity of the pore structures is analyzed, and then with the help of the experimental data of mercury penetration, the above structures are the important conditions of petroleum enrichment and reservoir formation. At last, by the established relation between the parameters and oil-bearing property＇ the distribution characteristics of the oil and water in Putaohua oil reservoirs are disclosed, the known regularity＂ understandings have provided the reliable foundations for the identification and de- velopment of Putaohua oil reservoirs in the study area.