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油气藏流体高压物性资料(PVT)对正确认识和评价油气层非常的重要。本文综合分析了南海西部海域178个PVT样品的取样过程,认为影响油气藏PVT取样的成败的原因主要存在两种,即取样方式选择不当和取样层位饱和压力预测失误。提出在取样时需要充分考虑流体性质以及钻完井、测试过程的影响,选择合理的取样方式;认为区域高压物性资料之间存在着较好的关系,通过区域关系计算饱和压力比经验公式预测更加的准确,可以有效的指导今后的取样工作,提高PVT取样的成功率。
The reservoir high-pressure fluid properties data (PVT) are very important for correctly understanding and evaluating the hydrocarbon reservoir. In this paper, the sampling process of 178 PVT samples in the western South China Sea is analyzed. It is considered that there are mainly two reasons that affect the success or failure of PVT sampling in oil and gas reservoirs, that is, improper sampling methods and prediction error of sampling saturation pressure. It is suggested that the sampling should take full account of the fluid properties and the influence of drilling, well completion and testing process, and choose a reasonable sampling method. It is believed that there is a good relationship between the regional high pressure physical data and the saturated pressure calculated by the regional relationship more than the empirical formula Accurate, can effectively guide the future sampling work, improve the success rate of PVT sampling.