The Driller and the Derrickman must be able to communicate at all times when the Derrickman is working on the derrick board.
当井架工在二层台工作时，司钻和井架工一定要能时刻保持联系。
The mud engineer also works closely with the rig's derrickman, who is charged with making scheduled additions to the mud during his work period.
泥浆工程师也要和司钻紧密合作，因为司钻负责在工作期间按计划加入泥浆添加剂。
We not only organized captains to proceed operation, but also looked upon the operation training to the post personnel, especially the driller, assistant driller, derrickman and crane driver.
我们不仅组织大班进行实操，同时也重视各岗位员工的实际操作训练，尤其对司钻、副司钻、井架工和吊机等岗位。
We not only organized captains to proceed operation, but also looked upon the operation training to the post personnel, especially the driller, assistant driller, derrickman and crane driver.
我们不仅组织大班进行实操，同时也重视各岗位员工的实际操作训练，尤其对司钻、副司钻、井架工和吊机等岗位。
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