Abstract On March 27, the reporter learned from the Tarim Oilfield that a modified individualized PDC bit with a diameter of 168.3 mm was successfully tested in the Keshen 8-11 well in the Kuqa Mountain, Tarim Oilfield. Compared with the average index of imported drill bits in the same layer, the drill speed of this drill has increased by 31...
On March 27, the reporter learned from the Tarim Oilfield that a modified individualized PDC bit with a diameter of 168.3 mm was successfully tested in the Keshen 8-11 well in the Kuqa Mountain, Tarim Oilfield. Compared with the average index of imported drill bits in the same layer, the drill speed of this drill has increased by 31%, the single drill has increased by 33%, and the comprehensive performance has reached the advanced level of similar foreign drills. The low rate of mechanical drilling and single drill bit is an important factor that restricts the speeding and improvement of the front of the Kuqa mountain in the Tarim Oilfield. In response to this problem, the Tarim Oilfield actively explored individualized and efficient PDC bits. Tarim Oilfield Oil and Gas Engineering Research Institute, Kuqa Exploration and Development Project Manager, and PetroChina Houston Technology Research Center, aiming at the problem of speeding up the drilling of the front of the Kuqa Mountain, carrying out the optimization of the composite sheet, the individual design of the PDC bit, the mechanical properties of the drill bit and the optimization of the hydraulic parameters. And other basic research work. On the basis of the previous field test, after three optimizations and improvements, the “third generation†personalized high-resistance grinding PDC bit was designed.
At present, this series of drills has completed field tests in 6 wells including Keshen 2-2-18 well. Among them, in the drilling of Keshen 8-11 well, the drill bit was drilled into the well at a depth of 7077 meters, drilled to a well depth of 7146.3 meters, and the mechanical drilling speed reached 1.71 meters per hour.
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