岩性油气藏 ›› 2017, Vol. 29 ›› Issue (1): 1120.doi: 10.3969/j.issn.1673-8926.2017.01.002
魏新善1,2, 胡爱平1,2, 赵会涛1,2, 康锐1,2, 石晓英1,2, 刘晓鹏1,2
WEI Xinshan1,2, HU Aiping1,2, ZHAO Huitao1,2, KANG Rui1,2, SHI Xiaoying1,2, LIU Xiaopeng1,2
摘要: 随着致密砂岩气勘探开发实践的不断深入,传统的地质认识暴露出很多局限性及与实际地质情况不相符的特性。在调研国内外致密砂岩气勘探开发历史经验的基础上,以鄂尔多斯盆地致密砂岩大气田勘探开发揭示的实际资料为依据,通过核磁共振及气水相渗分析、等温吸附实验、气藏地层压力恢复等研究,对传统的致密砂岩气地质特征认识进行了补充与完善。结果表明:致密砂岩气一般为多个压力系统气藏组成的大气田,这一特征决定了致密砂岩气勘探开发需要密井网,而不是常规气藏勘探开发的稀井网;致密砂岩气储层含水饱和度变化较大,具有超低含水饱和度特征,容易形成水锁伤害,在开发过程中必须做好储层伤害保护;致密砂岩气藏开发后期产水严重,如何“治水”是开发的关键问题;致密砂岩气储层中存在一定量的吸附气,这对于致密砂岩气储层含气特征及渗流规律描述、单井产能预测、资源量计算与储量评估都具有重要意义。
中图分类号:
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