关键词: 中国石油, 连续管, 作业技术与装备, 自主技术, 应用推广

Abstract: China’s coiled tubing technological development has experienced three stages – introduction of technology, independent development and promotion of application. Jianghan Machinery Research Institute of CNPC Drilling Research Institute has always committed itself to the study in this area during this period of time. As the organizer unit of projects, Jianghan Machinery Research Institute has been in charge of a series of research, experiment and promotion projects for the State and CNPC since 2006, independently developing a number of coiled tubing service technologies and equipment. First of all, the key technology of coiled tubing unit has been developed to entirely replace the imported equipment so that the domestic families of coiled tubing equipment can be used in the mountainous areas and complicated conditions. Secondly, a total of 24 coiled tubing service tools in four families and 35 processes were independently developed to facilitate integrity of tools and workover process, effectively improving the CT service efficiency. Thirdly, the process technology was developed for coiled tubing fracturing and well completion, thus increasing oil production cost-effectively by means of coiled tubing service. Fourthly, the research institute, as an organizer of projects, was involved in formulation of a series of relative technological standards, specification of products and service. The coiled tubing technological industrial chain was preliminarily established in the efforts to provide after-sales service, personnel training and on-the-site demonstration of technology, thus leading to a wider application of coiled tubing technology. Independent technological development substantially raised China’s coiled tubing service technological level and widened its application areas, promoting continual conversion of downhole service technological pattern.