The field tests in six wells show that this system can effectively solve the unstable well bore during drilling recent brittle shale oration in Jiangsu and has achieved remarkable economic benefits.

• 6口井的现场实验表明,该钻井液体系有效地解决了江苏新生代脆性泥页岩破碎地层的井壁失稳问题,取得了显著的经济效益。