西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (2): 79-86.DOI: 10.3863/j.issn.1674-5086.2010.02.015

• 地质勘探 • Previous Articles     Next Articles

EXPERIMENT OF ARTIFICIAL BARRIER CREATED BY BUOYANT DIVERTER FOR CONTROLLING FRACTURE HEIGHT

HU Yong-quan1 ZHAO Jin-zhou1 LIN Tao2 XIE Zhao-yang3ZHANG Ye2

  

  1. 1.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation，Southwest Petroleum University，Chengdu Sichuan 610500，China；2.Research Institute of Engineering Technology Branch，Northwest Oilfield Company，SINOPEC，Urumqi Xinjiang 830011，China，3.Hailar Branch，Daqing Oilfield Company，CNPC，Hulunbuir Inner Mongolia 021000，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-04-20 Published:2010-04-20

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Abstract:

It is necessary for low-permeability formation with weak barriers to control fracture height hydraulically by creating artificial barriers.In this paper，influential factors on resistance role of artificial barriers are analysized.Then，the core flow test device is modified by affixing an intermediate container in order to keep the buoyant dispersing during experiment.The particle size distribution is tested with Malvern laser counter.The crack is made about 2/3 length in artificial core for simulating artificial barrier process by core flow test which is accomplished based on recommended practice of petroleum industry.Lastly，successive regression method is applied and a statistical relationship of the barrier strength with carrying fluid viscosity，buoyant diverter concentration and core permeability obtained.The results provide a design foundation for controlling the fracture height growth.

Key words: hydraulically fracturing, artificial barrier, buoyant diverter, fracture height, flow test

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