关键词: 哈里伯顿, 固井, 水泥外加剂, 专利分析, 知识产权保护示

Abstract: Halliburton is an international leader in cementing technology and has applied for 111 patents for cementing additives (retarder, fluid loss agent, dispersant and accelerator). This paper makes in-depth analysis of the related patents worldwide and in Halliburton and elaborates distribution of countries and regions applying for patents, time of applications and content of patented technology. It points out the R&D focuses and development trends of Halliburton’s cementing additives. The company has paid more and more attention to development of polymer-based cementing additives, particularly retarder and fluid-loss additive. The relevant patents of retarder are in large quantities, reaching 50 in a wide range and taking a favorable market position worldwide. In addition, the R&D efforts are also focused on the special additives satisfying the harsh downhole conditions (such as high temperature and corrosion). Patent analysis can help learn patent application and protective strategy from foreign companies, allowing the domestic companies to have the mindset for application of the relevant patents, protection of intellectual property rights and development of new technologies.