深盆气藏开发方式初探

Discussion on the Development of Deep Basin Gas Accumulations

深盆气藏为一种主要发育在碎屑岩致密储层中的非常规气藏 ,产气储层的基本特性是低孔隙度、低渗透率、高含水饱和度以及异常 (低 )地层流体压力等 .这些特点的存在使得深盆气藏的地质开发具有很多特殊性 ,以地质分析为基础 ,结合钻井工程和开发工艺等进行全面分析 ,最终目的是降低生产成本 ,提高开发效益 .对深盆气藏地质开发的多种技术进行了简单讨论 .深盆气藏的主要开发目标是其中的甜点、黄油层以及与其相邻发育的共、次生油气成藏组合 ,井位部署需要仔细的地质资料分析 ,储层保护需要特殊的钻井技术 ,产量提高需要有效地增产措施 .因此 ,深盆气藏的开发需要综合配套技术 .

Deep basin gas accumulations are the abnormal gas accumulations developing mainly in tight clastic rock. Gas producing reservoirs are of the characteristics of low porosity, low permeability, high water saturation and abnormal formation fluid pressure. These features make the development of them very unusual. It is necessary to take an overall analysis of geological characteristic, drilling engineering and development technology. It is held that the development objects of them are the sweet spots and butters in them, and dependent combinations of secondary pools. So it is essential to make a geological analysis for pattern arrangement, to apply a special drilling technology for reservoir protection, and to take well stimulation for production increasing. In a word, integrated matching techniques are essential for the development of the deep basin gas accumulations.