深层低渗透凝析气藏衰竭开发特征模拟研究

Research on depletion exploitation characteristics simulation on deep zone & lowpermeability condensate gas reservoir.

以埋藏深度大、储层低渗致密的桥口复杂断块凝析气藏为目标,开展了地层流体相态全分析和衰竭式开发特征仿真模拟实验,研究了气藏衰竭过程中地层反凝析液饱和度分布、采出井流物组成变化、井流物采出程度、一级分离器凝析油和天然气累积采出量、采出气中重质组分含量变化等相态开采指标,为气藏衰竭式开发效果的物质平衡概念评价提供依据。

In this paper a series of production indices of phase state during the depletion course is investigated on saturation distribution of retrograde condensate liquid, composition change and produced degree of well effluent, accumulated output of condensate oil and natural gas in the first separator and content change of heavy component in the produced gas through phase overall a-nalysis of the formation fluid and emulative simulation experiment of depletion exploitation characteristics in Qiaokou complex tight faulted block condensate gas reservoir with deep burial depth and low-permeability . The research results will provide foundation for material equilibrium evaluation on the effect of depletion exploitation.