欠平衡钻井技术知识产权保护的分析与对策

为推动欠平衡钻井技术进步和提高中国石油企业对该技术知识产权的保护水平，阐述了欠平衡钻井技术发展概况及中国石油企业与发达国家的差距；通过全面检索国内外欠平衡钻井专利文献及相关技术文献，分析了国内外相关技术领域知识产权保护现状，指出了常规欠平衡钻井和气体欠平衡钻井领域在井控装备、压力控制、充气设备、欠平衡钻完井工艺技术等方面知识产权保护的热点、难点和薄弱环节，以及中国石油企业在欠平衡钻井技术中提高井下安全、实施全过程欠平衡钻井、欠平衡定向钻井等方面的技术创新方向，并提出了加强欠平衡钻井基础专利的申请、保护欠平衡钻井核心技术等知识产权保护策略。

ANALYSIS AND POLICY ON THE INTELLECTUAL PROPERTY RIGHTS PROTECTION OF UNDERBALANCED DRILLING

In order to stimulate the progress in underbalanced drilling (UBD) technology and help Chinese oil companies protect well the intellectual property right of UBD technology, this paper outlined how UBD technology developed at present and how far Chinese oil companies would catch up with the developed countries in UBD technology. Through searching through all patent literatures and related technical documentation at home and abroad involved UBD technology, this paper analyzed the status quo of intellectual property protection about UBD technology, pointed out all kinds of points of view on intellectual property protection about the conventional and gas UBD technology such as well control equipment, pressure control, gas pumping device, and drilling &; completion techniques, etc., and finally introducing many achievements by Chinese oil companies had been obtained about UBD technology including borehole safety, UBD drilling as a whole process, and UBD directional wells, suggested that oil companies should think highly on how to apply for the patent on any techniques involved UBD technology, and how to protect well essential techniques about UBD technology.