岩性油气藏 ›› 2020, Vol. 32 ›› Issue (2): 7889.doi: 10.12108/yxyqc.20200208
李宏涛, 马立元, 史云清, 胡向阳, 高君, 李浩
LI Hongtao, MA Liyuan, SHI Yunqing, HU Xiangyang, GAO Jun, LI Hao
摘要: 为了评价川西什邡地区蓬莱镇组三段气藏的开发潜力,优选有利区,通过岩心→测井→地震标定,对该气藏及主要目的层的沉积相、储层特征和有利含气储层分布进行分析。结果表明:该气藏可进一步划分为5个砂组,各砂组厚度稳定,沉积时期构造稳定,地势平缓,沉积类型属于浅水湖盆河控三角洲前缘,水下分流河道是砂体发育的最有利沉积微相。目的层JP35砂组储集岩主要为中—低孔隙度特低渗透率溶孔细粒岩屑砂岩,渗流能力差,是影响储层评价的重要因素。井-震结合的储层展布与含气性综合分析结果显示,相对水下分流河道砂体分布,研究区优质含气储层范围局限,呈不连续条带状,其展布受到沉积微相、河道规模以及局部构造高部位的控制。该方法和研究结果可为研究区及类似地区沉积相分析和储层特征、展布与评价研究以及有利区带优选等提供参考。
中图分类号:
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