毛管压力资料在合水地区延长组长6油藏储量参数确定中的应用

Application of Capillary Pressure Data to Determination of Chang6 Oil Reservoirs Parameters of Yanchang Formation of Heshui Area

利用毛管压力资料确定合水地区延长组长6油藏的原始含油饱和度，需注意几个重要的环节和步骤。从实际确定的具体过程看，采用多种方法确定合理的储层有效喉道半径下限，是利用毛管压力资料确定舍水地区延长组长6油藏的原始舍油饱和度的关键。另外，在储层有效喉道半径下限确定的前提下。采用毛管压力资料对储层的物性下限的确定方法，是孔渗丢失图版方法之外的一种有效的辅助方法。

It needs to pay attention to a number of important steps and links when determining the original oil saturation of the Yanchang Formation Chang6 reservoirs in Heshui area, Eastern Gansu,by use of capillary pressure data. From the actual process of determining the specific values, using various methods to deternfine the effective reasonable minimum radius of the throats of reservoirs is the key factor of determining the original oil saturation of the Yanchang Formation Chang6 reservoirs in Heshui area, by use of capillary pressure data. In addition, under the premise of the effective minimum radius of the throat determined, the determination method of lower limit of reservoir properties by using capillary pressure information is an assistance of the porosity-and-permeability plate method.