Drilling in horizontal well of deep heavy oil in Tuha Oilfield
CNPC news November 20th, in the Turpan Hami oilfield, Yuxi 1-102H well used to drill well to 4251 meters in 39.2 days, and completed well successfully. The drilling cycle was shortened by 53.4% and the penetration rate increased by 251.1%, which refreshed the new record of Yuxi deep heavy oil horizontal well drilling.
The Yuxi 1-102H well is a technical breakthrough well. In the process of drilling, Turpan Hami engineering and Technology Research Institute strengthens technological research and on-site production organization. Through adjusting drilling parameters and optimizing drilling fluid performance, we implement "one well one strategy, one stage and one strategy" as the core technology. In the upper part of the salt layer, soft rock easily reducing section using two-way well tools and supporting technology in horizontal vertical section, using PDC drill bit + high torque screw design for efficient control of oblique pressure composite drilling, in the oblique section with high whipstocking screw sliding drilling.
Through the depth of drilling speed and the application of new technology, the wells average penetration rate of 8.11 meters per hour, the drilling rate of 100%, the effective realization of the unity of drilling speed, reservoir protection, good quality wellbore and wellbore quality, provide new directions for deep and ultra deep horizontal well drilling technology the development of.
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