Recently, the Dabei 401 well of PetroChina Tarim Oilfield, which is the deepest gas well designed in China with a design depth of 8,457 meters, started drilling with a whistle, and is currently drilling into the ultra-deep formation at a speed of 100 meters per day to find high-quality gas for the West-East Gas Pipeline. source.

Well Dabei 401 is located at the southern foot of the Tianshan Mountains in Xinjiang and is a world-class restricted area for exploration. The formation pressure in this area is close to 140 MPa. For this reason, engineers and technicians are equipped with ultra-deep drilling technology to challenge ultra-deep drilling problems.

The Bozi-Dabei gas region where Well Dabei 401 is located is a demonstration area for efficient exploration and development of ultra-deep and complex gas reservoirs in China. In recent years, the average annual increase of gas volume is more than 1 billion cubic meters, and an atmospheric area with an annual production capacity of 7 billion cubic meters has been built.Editor/Ma Xue