深水近临界油藏动态分析及产能评价探索研究

深水近临界油藏是近年来不断发现和投入开发的一类特殊油藏，国内外对其开展的研究工作还相当有限。而在高投入、高风险的深水环境下，近临界流体的特殊性使油藏的高效开发更具挑战性。到目前为止，未曾见到针对该类油藏经济高效开发方面相关的公开研究成果。本文从实际油藏丰富的流体和生产资料出发，首次对深水近临界油藏复杂生产动态及深水油藏稀井高产高速流动下单井产能评价进行了探索研究。通过在Forchheimer高速流动产能模型中引入生产表皮系数，有效的考虑了该类油藏线性流动和非线性流动不同流动形态对单井产能的影响及其在各生产阶段中的变化，为确定合理生产压差和产能提供依据和指导。通过研究发现保压开采是该类油藏的首选，保持合理生产压差生产是该类油藏长期高产稳产的重要保障。研究成果对深水近临界流体油藏开发具有重要的指导意义，且能对同类油气藏的开发提供很好的借鉴。

Dynamic Feature and Deliverability Analysis of Near-Critical Deep Water Reservoir

Near-Critical deep water reservoir is one of special type which had been ever discovered and developed in recent years.The research on that is so much limited.By far,there isn’t any open research on the reservoir economical and high efficiency development.Based on the actual reservoir fluid and dynamic data,a pioneer researched on the complicated dynamic feature and deliverability analysis of single well with high velocity in this type of reservoir had been on.Add production skin factor into Forchheimer high velocity deliverability model,the effect and change rules of the flow patterns(linear and nonlinear flow) on deliverability of single well in every production phases had been considered.These can provide systemic approach and guideline to estimate feasible drawdown pressure and production potential.From the research,keeping up pressure development is the best method and keeping up the reasonable drawdown pressure is the most important guarantee to high and permanent production for a long time in this type of reservoir.A practical estimation method of feasible drawdown pressure and production potential from the actual dynamic data had been built.The result of the paper will contribute to the development of near-critical deep water reservoirs,and also be good reference for other similar ones.