Tianjin, September 9 (Zhongxin Net) -- The reporter learned from CNOOC Tianjin Branch that the first horizontal well cable compartment jamming technology in Bohai Oilfield has been successfully applied for the first time in the F24H32 well of the WHPF platform of Qinhuangdao 6-04 oilfield. After the measures, the water content of the well decreased by more than 3 percentage points, and the daily precipitation of a single well exceeded 3 cubic meters, which can save about 1600 million kWh of electricity per year, which is equivalent to saving 500 tons of standard coal per year, and the successful application of this technology has opened up a new situation for the exploration of Bohai Oilfield in oil stability and water control, energy saving and consumption reduction.

The first horizontal well cable compartment stuck water technology in Bohai Oilfield was successfully applied for the first time in Qinhuangdao 32-6 oilfield. Photo courtesy of CNOOC Tianjin Branch

Qinhuangdao 32-6 oilfield currently has more than 80% of the producing wells, and horizontal wells account for more than 7%. The horizontal well cable compartment water jamming technology is specially aimed at the characteristics of horizontal wells, and the production layer of horizontal wells is segmented by using annular chemical packer + mechanical sealing in the pipe to form a relatively independent mining chamber; The cable mining process is used to carry out rotation mining test and production of potential layers, and the high aquifer can be quickly sealed by online layer adjustment, and the low aquifer can be exploited independently. The traditional layered test and switch layer operation requires a team of 3 people at every turn, at least 5-<> days of continuous implementation to complete, horizontal well cable compartment technology can greatly liberate the labor force, platform production personnel in the central control computer "open the software, input the opening, click OK", "three-step operation" can be completed.

"The successful application of the WHPF platform F04H3 well has reached the expected water control goal of the reservoir after implementing the cable compartment jamming technology, and the successful application of this technology is a good start; We initially selected more than 32 horizontal wells in Qinhuangdao 6-10 oilfield for simultaneous research and demonstration, and more potential wells will be arranged to apply this new technology in the future. It is believed that with continuous practice, summary and improvement, we will have more and better methods in stabilizing oil and water control, saving energy and saving electricity, and make greater contributions to the country's energy security. The relevant person in charge of Qinhuangdao 32-6 operation company said. (End)