On May 20, 139.7 mm casing-side drilling special drill rods were successfully developed in the drilling and fittings engineering office of Zhongyuan Oilfield and put into mass production. Its successful development has filled a gap in the research and development of non-standard drill rods in China, which indicates that Zhongyuan Oilfield has been at the forefront of the development of non-standard drill rods in China.
Deep-side drilling with side windows uses conventional drill pipes and has high cycle pressure consumption, which is prone to well leakage and other downhole accidents. The 139.7 mm casing-side drilling special drill rod developed by the Department can reduce the cycle pressure consumption and meet the requirements for safe construction of sidetrack drilling in deep wells. It can effectively solve the problem of high pump pressure, easy-to-leakage, and easy-to-drill production caused by the use of conventional drill rods. Damage and other problems.
Deep-side drilling with side windows uses conventional drill pipes and has high cycle pressure consumption, which is prone to well leakage and other downhole accidents. The 139.7 mm casing-side drilling special drill rod developed by the Department can reduce the cycle pressure consumption and meet the requirements for safe construction of sidetrack drilling in deep wells. It can effectively solve the problem of high pump pressure, easy-to-leakage, and easy-to-drill production caused by the use of conventional drill rods. Damage and other problems.
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