井下作业英语100句Thetractorhoistshouldbelocatedbehindthederrick.通井机应就位在井架后面。Thetubingbridgesarearrangedinthree(3)lines.摆放油管架,三行。Thelinespacingisthreemeters.行距为3米。Thetubingsarearrangedingroupsoften(10)jointsandmarkedproperly.排放油管,十根一组,做好标记。ThewellheadprotectingcapisremovedandtheriserandtheX-treeareinstalled.卸井口帽,安装升高短节及采油树。Besurethethreadi...