碳酸盐岩串珠状地震相储层自身要素研究及高效井轨迹优化——以塔里木盆地塔中西部奥陶系为例

作    者:王 平1,胡太平1,谢 恩1,江 杰1,张 敏1,丁肇媛1,齐凤林2
单    位:(1中国石油塔里木油田公司勘探开发研究院;2中国石油塔里木油田公司塔中项目经理部)
基金项目:国家科技重大专项“塔里木盆地海相碳酸盐岩油气资源潜力、有利区带评价与目标优选”资助
摘    要:
综合利用地震、钻井、测井及开发动态等资料,研究了塔里木盆地塔中西部地区高效井与串珠状地震相储层的关系。提出了峰谷能量指数的概念,指数越大,串珠状地震相储层越发育。若强串珠状地震相发育伴生断裂,则储层发育规模较大;串珠状地震相位于缝洞系统的相对高部位,则一般油柱高度大,有较长的无水采油期。对于强串珠状地震相,水平井水平段轨迹设计在最大波谷处较为合适;对于弱串珠状地震相,水平井水平段轨迹设计在最大波谷之下的零相位之上较为合适。塔中西部实际应用结果表明,具备四项要素(峰谷能量指数大于17 000、伴生断裂发育、处于缝洞体系高部位、目的层井轨迹位于储层顶部)的强串珠状地震相储层,钻井易高产稳产。
关键词:塔里木盆地;碳酸盐岩储层;地震相;高效井轨迹

Characteristics Study of Moniliform Seismic Facies and Optimization for Efficient Well Trajectory in Carbonate Reservoirs: A Case of Ordovician Reservoirs in the West of Tazhong Uplift, Tarim Basin

Author's Name: Wang Ping, Hu Taiping, Xie En, Jiang Jie, Zhang Min, Ding Zhaoyuan, Qi Fenglin
Institution: Research Institute of Exploration and Development, PetroChina Tarim Oilfield Company
Abstract:
According to seismic, well logging and production data, the relationship between moniliform seismic-facies Ordovician carbonate reservoirs and efficient wells is studied in the west of Tazhong Uplift, Tarim Basin. It is proved that carbonate reservoirs mostly develop in those strong seismic-facies beads that is characterized by the basic factors: (1) peak to trough amplitude index more than 17000, (2) developing associated faults, (3) in relatively high locations of fractured-vuggy system, and (4) the well trajectory of target zone at the tops of reservoirs. These are the important prerequisites for keeping long period of high and stable yield.
Keywords: Carbonate reservoir; Seismic facies; Efficient well trajectory; Tarim Basin
投稿时间: 2015-08-24  
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