关键词: 连续管作业, 径向井, 超深井, 超长水平井, 储层改造, 悬挂方式, 排水采气

Abstract: China National Petroleum Corporation (CNPC) has made significant progress in coiled tubing service technology and scored a rapid business growth in service volume following the continuous efforts for research and extension of coiled tubing service in the 13th Five-year Plan period. In the four areas of radial drilling sidetracking, ultra-deep well and deep-layer shale/tight oil and gas coiled tubing service, coiled tubing directional sand blasting perforation fracturing, and coiled tubing suspension completion and oil/gas production, CNPC has made important achievements in research of coiled tubing process technology and key tools, manufacture of equipment and software development. The coiled tubing service business has rapidly risen 22 percent year by year in the efforts to promote four main processes – coiled tubing rapid workover, coiled tubing velocity string and completion string, coiled tubing reservoir stimulation and coiled tubing logging and testing. With oil and gas development extending into deeper layers and longer horizontal section, coiled tubing technology will face a series of new challenges during the 14^th Five-year Plan period. It is necessary to improve coiled tubing equipment and service competence, enhance promotion of the whole series of coiled tubing service technology, accelerate construction of technology sharing service platform and digitalized and intelligent software platform, and provide effective technological support for the dual strategy of “keeping oil production stable while increasing gas production and improving quality for higher efficiency”.