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凝析气藏取样和PVT实验分析对于此类油气田开发有着重要的意义。由于取样和PVT实验等原因会造成取得的流体样品与其表征的性质存在较大的偏差,甚至出现不相符合的现象。针对存在的问题,依据物质平衡原理和烃类组分的物理化学性质,判断PVT实验特别是CVD实验与其样品的一致性。根据正常的流体样品和PVT实验数据建立其一致性检验的经验图版。对某油田的地层烃类流体样品和其PVT性质进行判断,为其流体样品恢复和此类油气田的开发提供依据。
Condensate gas reservoir sampling and PVT experimental analysis for the development of such oil and gas fields is of great significance. Due to sampling and PVT experiments and other reasons will result in fluid samples and their characterization of the existence of a large deviation, or even appear not consistent with the phenomenon. In view of the existing problems, according to the principle of material balance and the physicochemical properties of hydrocarbon components, the consistency of PVT experiment, especially CVD experiment and its sample is judged. Empirical plates of consistency tests were constructed based on normal fluid samples and PVT experimental data. The judgment of formation hydrocarbon fluid sample and its PVT property in an oilfield provides the basis for the recovery of fluid sample and the development of such oil and gas fields.