Journal of Petroleum & Environmental Biotechnology

Journal of Petroleum & Environmental Biotechnology
Open Access

ISSN: 2157-7463

+44 7480022449

Yanmin Liu

School of Petroleum Engineering, China University of Petroleum, Qingdao 266580, P.R. China

  • Review Article   
    Quantitative Classification of Shallow Gas Blowout during Offshore Drilling Process
    Author(s): Shaoran Ren*, Yanmin Liu, Feng Huang and Panfeng Zhang

    Shallow gas is in form of natural gas accumulation at abnormal pressure, which may exist in shallow sediments below the seabed. Gas can blowout unexpectedly during well drilling that can pose a great hazard to drilling safety. In this paper, the occurrence and geological feature of shallow gas in offshore sediments are described and a quantitative classification of shallow gas hazards is given based on gas blowout rate, which can provide guidelines for the assessment and control of the shallow gas hazards. Several measures for prevention of shallow gas blowout in offshore drilling are described, including dynamic well killing technology... Read More»

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