海上中高渗透率砂岩油藏油水相渗曲线合理性综合分析技术

Comprehensive analytical techniques of oil-water phase permeability curve rationality in offshore medium and high permeability sandstone reservoirs

为解决相渗曲线合理性分析的技术难题,从渤海油田大量的相渗曲线基础资料出发,通过分析相渗曲线的曲线形态,统计油相指数和水相指数分布范围,开展相渗曲线端点值与空气渗透率变化规律研究,并建立一套由“曲线形态分析法”、“油相指数和水相指数分析法”、“端点值分析法”组成的海上油田中高渗透率砂岩油藏相渗曲线合理性综合分析技术.应用结果表明,该项技术能够指导矿场技术人员分析相渗曲线的合理性,可确保油藏研究成果的可靠性,具有较好的推广应用价值.

In order to solve the technical problem of rationality analysis of phase permeability curve, based on a large amount of basic data of phase permeability curve in Bohai oilfield, the curve form of phase permeability curve was analyzed, the distribution range of oil-phase index and water-phase index was calculated, and the change regularity of end-point value of phase permeability curve and air permeability was studied. A set of comprehensive analytical techniques for phase permeability curve rationality of medium and high permeability sandstone reservoirs in offshore oilfields were established, which consisted of "curve morphology analysis method", "oil-phase index and water-phase index analysis method" and "endpoint value analysis method".The application results show that these techniques can provide guidance for technicians to analyze the rationality of the phase permeability curve, to ensure the reliability of reservoir research results and has good application value.