火山岩气藏开发早期产能特征及其影响因素分析

Research of Early Productivity Distinction and Effect Factors about Volcanic Gas Reservoir

通过应用大庆徐深气田开发取得的矿场资料,分析了火山岩气藏的产能特征。论述了其影响因素。火山岩气藏主要表现为井间产能及井控动态储量差异大、气井动态特征及稳产能力各不相同。受裂缝水窜的影响出水、常规评价技术对产能适应性差。同时也指出储层的物性、井控流动区域形态与物性差异、连通的高渗带(体)的规模、储层微观渗流特性等是气井产能的主要影响因素。这些结论和认识对火山岩气藏的开发具有重要指导意义。

The productivity distinction is analysed,the effect factors are expounded by the development datas in Daqing Xushen Gas Fields.The productivity and dynamic reserve volume are large divergence in wells.The behavioral characteristics and rate maintenance capability are different in wells.The water flowing is controlled by cracks.The customs technique is not adapted to the productivity.The main effect factors include physic parameters,shape of flow-region,the scale of high permeability zone connected and the microflow characteristics.These knowledges and conclusions are important guide in the volcanic gas reservoir development.