Acta Scientiarum Naturalium Universitatis Pekinensis ›› 2016, Vol. 52 ›› Issue (2): 241-248.DOI: 10.13209/j.0479-8023.2015.079

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Nonlinear Characterization Method of Fracturing Stimulation Scale on Heterogeneous Reservoir by Combining Logging and Seismic Data

DU Shuheng1, SHI Yongmin1, XU Qi2, FANG Yuanyuan1, SHENG Yingshuai1   

  1. 1. School of Earth and Space Science, Peking University, Beijing 100871
    2. The 10th Oil Production Plant, Daqing Oilfield Company, PetroChina, Daqing 166405
  • Online:2016-03-20 Published:2016-03-20
  • Contact: SHI Yongmin, E-mail: sym(at)vip.163.com

井震联合非均质储层改造规模的非线性表征方法

杜书恒1, 师永民1, 徐启2, 方媛媛1, 盛英帅1   

  1. 1. 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大庆油田分公司第十采油厂, 大庆 166405
  • 通讯作者: 师永民, E-mail: sym(at)vip.163.com
  • 基金资助:
    国家重点基础研究发展计划(2009CB219300)资助

Abstract:

After two infilling adjustment and repeated fracturing on the third type of Chaoyanggou oil field, effective drive systems are still unable to be established in part of the reservoirs, and the measure effect and oil recovery degree is poor. Considering the insufficient understanding on fracture extending and fracturing stimulation scale of heterogeneous reservoir, 3D modeling on reservoir are performed by combining logging and seismic data and the asymmetric cracks are predicted based on elastic theory. Concepts named “relative stress” and “stimulation ratio” are raised, and the nonlinear relation between these two parameters is given. The scale of “relative stress” which could produce the supporting fracture is confirmed, and the fracturing stimulation scale could be judged. It would play important role on the layers selecting during the late development of oilfield and eventually to improve oilfield recovery degree.

Key words:  logging and seismic data combination, heterogeneous reservoir, 3D modeling on stress field, relative stress, stimulation ratio

摘要: 朝阳沟油田Ⅲ类区块井网经过两次加密调整和重复压裂, 部分储层仍无法建立有效驱动体系, 油水井措施效果差, 剩余油采出程度低。考虑到对压裂缝扩展条件及非均质储层改造程度认识不足的实际情况, 通过测井与地震联合的手段开展油藏三维地应力场建模, 以弹性理论为基本依据, 预测非对称压裂缝全缝长扩展情况, 提出“相对应力”和“改造因子”概念, 给出相对应力?改造因子非线性经验关系式, 划定形成填砂裂缝的相对应力值范围, 并据此判断储层压裂后改造规模情况。研究结果对油田开发中后期开发层系的选定, 提高油田最终采收程度将起到较重要的指导作用。

关键词: 井震联合, 非均质储层, 应力场建模, 相对应力, 改造因子

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