Chinese steelmaker Baogang United Steel has independently developed a rare-earth, high-strength, high-toughness oil casing, which was used for the first time in an 8,000-meter-deep well in North China ...

Planning, modeling, collecting data, and maintaining flexible response options are necessary to drill thick, highly mobile salt sections successfully. A continuous circulation system to monitor and ...

New equations for calculating the collapse strength of worn casing can aid future casing string design. During any drilling, it is inevitable that drill pipe rotation and tripping will cause casing ...