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< Natural Gas and Oil > Editorial Department
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China Petroleum Engineering & Construction Corporation
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Du Tonglin
Vice Editor in Chief:
Tang Xiaoyong,Pu Liming
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Issue:ISSN 1006-5539
          CN 51-1183/TE

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    Your Position ：Home->Past Journals Catalog->2011 Vol.6

    Discussion on Hydraulic Fracturing for Deep Buried CBM
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    Key Words：Deep buried coalbed methane； Ultra-low-density propping agent； Multifunctional fracturing fluid：Reservoir stimulation volume
    Abstract：Coalbed methane （CBM） is one kind of unconventional natural gas and its exploration and development have very strong specificity. Hydraulic fracturing technology has already been widely applied in shallow CBM development. China has enormous CBM resources and 61. 2 % of which is buried deeper than 1000m. Compared with shallow coal seams， there are such special engineering mechanics features in deep coal seams as high subterranean stress， high subterranean temperature and high karsts water pressure. Thus， fracturing stimulation of deep buried CBM will face some difficulties， such as difficult borehole wall stabilization， poor manmade fracture extension regularity， difficult propping agent transportation， difficult coal seam permeability protection， complex CBM adsorption and analytical regularity. In order to enhance hydraulic fracturing treatment capacity of deep buried CBM， it is suggested that ultra low dense propping agent， multifunctional fracturing fluid and supporting technologies for increasing reservoir stimulation volume shall be developed according to shallow buried CBM stimulation techniques obtained already.
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