油气藏流体相态数据现场应用方法研究

Study on field application method of PVT data for reservoir fluids

将油气藏流体高压物性实验数据直接应用于现场生产动态分析,目前国内还没有相关文献报道,主要受限于闪蒸分离和差异分离等实验过程与实际生产情况有较大差异,国外文献报道的公式都是利用大量的实验数据回归得到,没有理论证明或实验验证,导致公式并不统一。为解决此问题,首次设计了饱和压力下不同压力的多级分离器模拟实验,通过实验数据验证各公式的准确性,明确了油藏流体高压相态数据现场直接应用方法,为油田现场生产动态的认识提供了方法保障。

In domestic research,now no relevant literature has been reported on the experimental data of high pressure physical properties directly applied in dynamic analysis of field production.This mainly is limited by bigger difference between actual production conditions and experimental process of flash separation and differential liberation.The formulas reported by foreign literature are obtained by fitting lots of experimental data.Because these formulas are not verified by the theory or experiments,they are inconsistent with each other.To solve the problems,it was for the first time designed the simulation experiments of various pressures for the multi-stage separator under saturation pressure.Firstly,the accuracy of every formula was verified by experimental data.And then it was specified the field application method of PVT data for reservoir fluids.So this can provide technical guarantee for recognizing the dynamic production of oilfields.