徐深气田火山岩气藏勘探与开发产能对比分析

Analogy on Exploration and Development Productivity of Xushen Volcanic Gas Reservoir

徐深气田营城组火山岩气藏,受构造与岩性双重因素控制成藏,气藏类型复杂,岩性岩相变化较快,储层致密且非均质性严重。主要表现为各区块产能、气井动态特征及稳产能力各不相同,即使同一口井在勘探、开发不同阶段产量变化也大不相同。通过产能评价对该气田4个区块的勘探、开发产能动态特征和差异进行了原因分析,对一些区块提出合理性的开发部署建议,对后期开发配产与认识有着重要指导意义。

Volcanic gas reservoirs of Yingcheng formation,Xushen gas field,are influenced by factors such as structure and lithology.As a result,the gas reservoirs are complex in types,the lithology and lightface change quickly,and the reservoirs are tight with severe heterogeneity.It has been found that the dynamic performance and rate maintenance capability are different.Even for the same well,the production history can show large differences in different stages.By testing the four blocks in this gas field,we have analyzed the reasons leading to the dynamic characteristics and differences in exploratory and development.Moreover,reasonable proposals are provided for the development of several blocks.Proration plan of later stage can be carried out under the guidance of this study.