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在介绍７种国内外原油饱和压力计算相关式的基础上，根据油层流体物性参数和有关资料，运用回归分析理论，建立了萨中地区萨葡高油层原油饱和压力相关式，并使用５种误差参数和一个相对性能因数来评价７种相关式的计算精度。对现场获取的油气水试样，用ＧＦ７３１型高压物性仪，测得原油饱和压力值。结果表明，油藏含水率上升，原油饱和压力下降，但不同层位的下降幅度有所差异。又根据现场实际状况给出了不同含水条件下萨中地区原油饱和压力表达式。
Based on the correlation equations of seven kinds of crude oil saturation pressures at home and abroad, according to the fluid physical parameters and the related data, the paper uses the regression analysis theory to establish the correlation formula of the saturation pressure of crude oil in the Saugu high oil layer in Sazhong area, and uses five kinds of errors Parameters and a relative performance factor to evaluate the accuracy of seven kinds of correlation calculation. Oil and gas samples obtained on the site, with GF731-type high-pressure physical properties measured crude oil saturation pressure value. The results show that the reservoir moisture content increases, the saturation pressure of crude oil decreases, but the decline of different layers have some differences. Based on the actual situation of the site, the expression of crude oil saturation pressure in Sazhong area under different water conditions is also given.