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作者£º ¹ù¶«ºì£¬ÌÀ°ØËÉ£¬ÕŲ©£¬ÕԽܣ¬ÁÖº£ ¡¾ 转载 ¡¿ À´Ô´£º »¯Ñ§¹¤³ÌÓë×°±¸ 2024-08-14

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Exploration and application of the environmentally-friendly synthetic base drilling fluid in highly-deviated wells in Bohai sea

Guodonghong£¬TANG Baisong£¬zhangbo£¬zhaojie£¬LIN Hai

1.CNOOC EnerTech-Drilling & Production Co.£¬Tianjin£¬300452£¬China

2.Tianjin Branch of CNOOC Ltd.£¬Tianjin 300450£¬China


Abstract£ºIn the drilling process of highly deviated exploration wells, high friction and torque, wellbore instability and other risks are encountered. Traditional water-based drilling fluids are difficult to overcome these problems, and oil-based drilling fluids are also faced with environmental problems. To solve this difficulty, comprehensive consideration of biodegradable, non-toxic, non-corrosive, etc, to carry out the research and development of environmentally friendly synthetic based drilling fluid, and the system of the rheological properties of drilling fluid performance, ability to resist pollution, reservoir protection and environmental protection performance was evaluated. The drilling fluid system performance by Kenli in Bohai oilfield, a successful trial in high Angle Wells, Results show that the drilling fluid system has excellent performance. The successful trial in Kenli exploration well of Bohai oilfield shows that this drilling fluid system is suitable for drilling in exploration well of Bohai oilfield.  This paper provides valuable reference for the application of biodegradable synthetic drilling fluid system in offshore oil fields.

Key words£ºBohai oilfield; highly-deviated exploration well£»synthetic based drilling fluid£» performance evaluation


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