The selection and master design of guide drill tool are important problems usually met by field drillingoperator and manufacturer.
导向钻具的选型与总体设计，是现场钻井工作者与制造厂家经常碰到的重要问题。
2
The contract depth is specified in a legal agreement between the operator, who pays for the well, and the drilling contractor, who owns and operates the drilling rig.
合同深度特规定在作业商(为井眼付款方)与钻井承包商(钻机拥有并作业的一方)的法定合同中。
3
In the oil exploitaion, drilling pressure and drilling moment are very important parameters for operator, and he must be very experienced with them.