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Volume 36 Issue 3
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ZHANG Ran, LI Gen-sheng, ZHAO Zhi-hong, SHENG Mao, FAN Xin, CHI Huan-peng. New criteria for hydraulic fracture crossing natural fractures[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(3): 585-588. DOI: 10.11779/CJGE201403024
Citation: ZHANG Ran, LI Gen-sheng, ZHAO Zhi-hong, SHENG Mao, FAN Xin, CHI Huan-peng. New criteria for hydraulic fracture crossing natural fractures[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(3): 585-588. DOI: 10.11779/CJGE201403024
shu

New criteria for hydraulic fracture crossing natural fractures

  • 1. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China; 2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China

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  • Received Date: April 09, 2013
  • Published Date: March 19, 2014
    Abstract
  • The complexity of a hydraulic fracture network depends on the behaviors of induced hydraulic fractures as they intersect natural fractures, so it is important to understand the mechanism of fracture intersection under particular field conditions of in-situ stresses, rock and natural fracture properties. An accurate criterion for the fracture propagation across natural fractures is established, and the direction of the reinitiated fracture is also studied. The results show that for a given approaching angle there exits a certain range of stress ration when crossing occurs, beyond this range crossing will not occur. Under high horizontal differential principle stress and approaching angle, hydraulic fracture is more likely to cross the natural fracture. As the stress ration increases, the direciton of reinitiated fracture draws closer to the direction of the incremental principle stress. This new criterion can be applied in the general analysis of fracture network and simulation of numerical fracture network.
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    • References (12)
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    • 1. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China; 2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China

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