Study of hydraulic fracturing morphology based on damage mechanics analysis

WANG Su-ling; JIANG Min-zheng; LIU He

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Study of hydraulic fracturing morphology based on damage mechanics analysis

更新时间：2026-06-25

- Study of hydraulic fracturing morphology based on damage mechanics analysis
- Vol. 32, Issue 7, (2011)
- 作者机构：
  
  1. 东北石油大学机械科学与工程学院,黑龙江,大庆,163318
  2. 中国石油勘探开发研究院,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC： O346
- Online First：30 June 2011，
  
  Published：2011
- 稿件说明：
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WANG Su-ling, JIANG Min-zheng, LIU He. Study of hydraulic fracturing morphology based on damage mechanics analysis[J]. 2011, 32(7).
DOI：

WANG Su-ling, JIANG Min-zheng, LIU He. Study of hydraulic fracturing morphology based on damage mechanics analysis[J]. 2011, 32(7). DOI：

摘要

水力压裂三维裂缝形态及延伸的预测是评价水力压裂效果的主要因素，采用了损伤力学与断裂力学相结合的方法，描述了裂缝表面岩体的力学行为，建立了裂缝面上的损伤判据与损伤演化方程。根据岩石力学与渗流力学，采用有限元方法建立了低渗透储层岩体的流固-损伤耦合方程，并采用Newton-Raphson与线性搜索相结合的方法进行求解，获得了低渗透油层水力压裂三维裂缝的动态扩展过程及最终形态，揭示其力学本质。通过算例验证了理论及计算方法的正确性。在此基础上，分析了影响裂缝扩展的主要因素，其结果可为水力压裂设计提供较为可靠和准确的预测手段，以提高油层水力压裂措施的成功率

Abstract

The prediction of three-dimensional hydraulic fracturing morphology and extension is the main factor to evaluate the effects of hydraulic fracturing; adopting the method that combining damage mechanics and fracture mechanics to describe the mechanical behavior of cracks in the surface rock

and then the damage criterion and damage evolution equation in the crack surface are established. The equation is solved by using the method combining Newton-Raphson and the linear search; and then the dynamic crack extension process and the final morphology of hydraulic fracturing three-dimensional are obtained; and the mechanical essence is revealed. The correctness of the theory and calculation is verified through numerical examples; based on which

the main factor of crack extension is analyzed. The results provide more reliable and accurate prediction methods for hydraulic fracturing design

so as to improve reservoir hydraulic fracturing success rate.

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