Study and application of setting-completion integrated technology

Temporary plugging technology is an important protection to ensure well control safety during the modification of wellhead device, but it has the defects of low well completion efficiency, high tool cost and serious reservoir contamination by drilling fluid. To this end, this paper developed a two-setting packer and achieved a setting-completion integrated technology. Two-setting packer integrates mechanical setting and hydraulic setting together and both setting modes are independent, so after either of them is unset, the other mode can be started for the second setting. The setting-completion integrated technology can give full play to the advantage of the two-setting packer to conduct temporary plugging and production in one trip, so that well completion efficiency is improved greatly while wellbore integrity and well control safety are ensured in the process of well completion. The setting-completion integrated technology has been successfully tried out on site. And thanks to the simplicity, convenient operation and high reliability of its support tools, this technology has already been popularized and applied in Tahe Oilfield.