文章采用合享(Incopat)全球专利数据库商业专利检索系统对煤炭地下气化(UCG)领域的专利技术进行检索，以此探究全球UCG发展态势。研究显示:从对全球UCG专利申请数量、申请趋势、布局地区、主要专利申请人的分析来看，目前UCG产业正处于高速发展阶段。自2001年以来，UCG专业领域的专利逐年上升，尤其是在2013年以后，U C G技术领域的专利申请量进入快速增长的阶段，申请的专利囊括了整个UCG的产业链，专利技术功效也主要集中于经济、高效、灵活可控、安全、稳定运行等方面。本轮UCG产业的发展主要得益于我国相关技术的快速发展，我国UCG专利申请量从2013年开始进入飞速增长的阶段。总体来说，随着石油工程类高精尖技术应用，深层煤炭地下气化体现出强大的活力和经济优势。
Global Development Trend and Prospect of Underground Coal Gasification—Based on Patent Analysis
In order to explore the development trend of global underground coal gasification(UCG),this paper uses commercial patent search system of Incopat Global Patent Database to search the patented technologies in the field of UCG.The research shows that the UCG industry is currently in a stage of rapid development from the analysis of the number,application trends,distribution regions,and main patent applicants of global UCG patent applications.Since 2001,the number of patents in the professional field of UCG has increased year by year,especially after 2013,the number of patent applications in the field of UCG technology has entered a stage of rapid growth;the patents applied include the entire UCG industrial chain,and the efficiency of patent technology is mainly concentrated in economic,efficient,flexible and controllable,safe and stable operation.The development of this round of UCG industry is mainly due to the rapid development of related technologies in China with the number of UCG patent applications in China having entered a stage of rapid growth since 2013.In general,with the application of advanced technology in petroleum engineering,deep coal underground gasification has shown strong vitality and economic advantages.
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