Vertical drilling system successfully applied in Dawan 1 well
Recently, the new vertical drilling technology developed by American Baker Hughes Company was successfully implemented in the Dawan 1 well, a key exploration well located in the northeastern Sichuan Basin. This breakthrough effectively addressed the long-standing challenge of maintaining wellbore stability in formations with steep dip angles, significantly improving drilling efficiency. The mechanical drilling speed saw a remarkable increase, tripling compared to previous operations.
Dawan 1 is the first major exploration well drilled by the company on the Dawan structure, with a total designed depth of 5,995 meters. During the initial phase of drilling, from 1,704 meters to 1,794 meters, the well deviation increased rapidly, rising from 3 degrees to 45 degrees. To manage this issue, and with support from Sinopec Headquarters, the Southern Company coordinated with the construction team to deploy Baker Hughes’ vertical drilling system starting at 1,829.96 meters. The operation continued smoothly, and by February 16th, the well had reached a depth of 2,444 meters, covering a total footage of 555.04 meters.
Notably, the well inclination was reduced to just 0.3 degrees, demonstrating the effectiveness of the technology. The average mechanical drilling rate improved to 1.94 meters per hour, far exceeding previous performance. As of now, the well has been drilled deeper than 2,700 meters, and the project continues to progress steadily. This successful application marks a significant milestone for the company, showcasing the potential of advanced drilling technologies in complex geological conditions.
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