The first development well operation of the "Deep Sea No.1" Phase II project has been successfully completed

On October 16th, the reporter learned from CNOOC that the first development well operation of the "Deep Sea No.1" Phase II project was successfully completed, with a daily production of over 1 million cubic meters of natural gas and over 230 cubic meters of condensate tested, far exceeding design expectations

On October 16th, the reporter learned from CNOOC that the first development well operation of the "Deep Sea No.1" Phase II project was successfully completed, with a daily production of over 1 million cubic meters of natural gas and over 230 cubic meters of condensate tested, far exceeding design expectations.

The picture shows the blowout test of the first development well of the "Deep Sea No.1" Phase II project. (Courtesy of CNOOC)

Jiang Donglei, the manager of the second phase drilling and completion project of China National Offshore Oil Corporation's "Deepsea No.1", introduced that the "Deepsea No.1" second phase project is located in the southern sea area of Hainan Island, with 12 underwater gas wells deployed in three well zones: south, north, and east. The Lingshui 25-1 deepwater block, located approximately 70 kilometers away from the "Deepsea No.1" energy station, has a maximum formation pressure of 69 MPa. The first development well completed this time has a water depth of nearly one kilometer, with a completed drilling depth of over 5000 meters. The horizontal distance between the end of the wellbore structure and the wellhead exceeds 2000 meters, and the maximum inclination angle of the well reaches 91 degrees. It is a highly difficult to implement deep water large displacement horizontal well.

The on-site operation team of the "Deep Sea No.1" Phase II project collaborated to complete the replacement of drilling tools. (Courtesy of CNOOC)

Liu Shujie, Chief Engineer of China National Offshore Oil Corporation Hainan Branch, stated that the total drilling footage of the second phase of the "Deep Sea No.1" project has reached 2.2 times that of the first phase, and the total progress of the project's drilling operations has reached 80% by the time the first well is completed. The speed of the operation has been significantly improved.

It is reported that after the completion of the second phase of the "Deep Sea No.1" project, the natural gas reserves of the "Deep Sea No.1" atmospheric field will increase from 100 billion cubic meters to 150 billion cubic meters, and the peak annual production will increase from 3 billion cubic meters to 4.5 billion cubic meters.

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