Recently, Shengli Oilfield Drilling Well Completion Technology applied expansion pipe technology to successfully seal wells in perforated wells in wells 111-2 and QK-8 of Sinopec Huadong Branch, marking the expansion pipe of Shengli Oilfield Drilling Yard. Technology officially opened the East China branch market.

The expansion pipe technology is to put the pipe string into the bottom of the well and use the drive head to deform the pipe material by hydraulic or mechanical force so as to increase the inner diameter of the production string or wellbore, which can be applied to drilling, completion and oil recovery. , well repair and other operational processes. The expansion sleeve subsidy technology is sealed with a rubber tube, which has large suspension force, reliable sealing, and high temperature resistance. It can repair hundreds of meters or even thousands of meters of casing damage.

The wells of Taiwan 111-2 and QK-8 wells were not able to produce properly due to the serious water discharge and sand production in the perforation wells. In order to solve the problem of similar well casing subsidies, in April this year, Sinopec Huadong Branch Company and Shengli Oilfield Drilling Yard reached an agreement on the prices, service methods, and technical requirements for expansion casing subsidies, and signed a long-term technical service framework contract. In order to do a good job in the technical service of these two wells, technical staff of the drilling rigs before the construction have formulated a detailed construction plan. During construction, technicians overcome the adverse effects of high-temperature weather, carefully organized and successfully completed construction tasks.