流动单元划分及其在地质中的应用

Division of Flow Unit and Its Application in Geology

流动单元是侧向和垂向上连续的具有相同影响的流体流动特征参数的储层单元。流动单元的确定可以更加合理地划分储集层,预测储集层的分布及性质;提高储层岩石及流体物性参数模型的解释精度,更加准确地认识油藏;提高水淹层解释精度,确定剩余油的分布,选择加密调整及挖潜的对象,进而提高原油采收率;建立和确定更加符合生产动态的油藏模型和油藏特征参数,提高油藏数值模拟的精度。借鉴国内外油田开发经验,总结了流动单元划分的几种方法及其在地质中的应用。

A flow unit is defined as a volume of reservoir rocks that are laterally and vertically continuous and has similar averages of those rock properties that affect fluid flow. Flow unit method allows for an accurate zona-tion, evaluates distribution and properties of reservoirs for the study of reservoirs, enhances accuracy of the physical parameters model of reservoirs and fluids so to acquaint information of the reservoirs accurately. Meanwhile this approach can enhance accuracy of interpretation of watered-out zones to decide the distribution of remaining oil and choose the infillers, thus improving the recovery ratio. Beside, the flow unit method can establish the reservoir model and reservoir parameters which are accorded with the producing performance and enhance precision of numerical reservoir simulatioa Based on the developing experiences at home and abroad, summarized are several methods of dividing the flow units and applications in geology.