Acta Scientiarum Naturalium Universitatis Pekinensis

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Research on the Effectiveness of Fractures in Sinian-Cambrian Dolomite Reservoir in Tarim Basin

ZHANG Peng1, HOU Guiting1, PAN Wenqing2, QI Yingmin2, Chen Yongquan2, ZHANG Qinglian1, MENG Qingfeng1   

  1. 1. The Key Laboratory of Orogenic Belts and Crustal Evolution MOE, School of Earth and Space Sciences, Peking University, Beijing 100871; 2. Research Institute of Exploration and Development, Tarim Oil Field Company, PetroChina, Korla 841000;
  • Received:2012-12-20 Online:2013-11-20 Published:2013-11-20



  1. 1. 教育部造山带与地壳演化重点实验室, 北京大学地球与空间科学学院, 北京 100871; 2. 中国石油天然气股份有限公司塔里木油田分公司勘探开发研究院, 库尔勒 841000;

Abstract: Combining the core observation and related logging data of the drillings in Sinian-Cambrain stratum, the dolomite reservoir section fractures were studied. It shows that fractures have a connected effect on native holes and some secondary holes, and plays a certain role in the transformation of the dolomite reservoir. After studying the relation between the fracture efficiency and fracture opening degree or fracture dip angle in four blocks of the Tarim Basin, Tazhong Area,Yaha Area, Yingmaili Area, and Bachu area, it is concluded that dolomite fractures which have narrower opening degree and higher angle have a higher effectiveness, and such kind of fractures play an important role in the transformation of dolomite reservoir.

Key words: reservoirs, dolomite, effective fracture, opening degree, inclination

摘要: 通过对塔里木盆地震旦?寒武系白云岩储层构造裂缝的测量、统计和研究, 结合岩芯观察和测井数据分析, 认为构造裂缝对白云岩的原生孔洞和部分次生孔洞起一定的连通作用, 对白云岩储层起一定的改造作用。对塔里木盆地塔中地区、牙哈地区、英买力地区和巴楚地区4个区块构造裂缝有效性与开度和倾角的关系研究后认为, 塔里木盆地震旦?寒武系白云岩开度较窄的裂缝和高角度裂缝的有效性较高, 该类构造裂缝对白云岩储层起良好的改造作用。

关键词: 储层, 白云岩, 有效裂缝, 开度, 倾角

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