دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a mechanism used to regulate the amount of weight 00 the bit without the presence of personnel. Automatic drillers free the driller from the sometimes tedious task of manipulating the drawworks brake to maintain correct weight on the bit. Also called an automatic drilling control unit.

n: Mechanism to automatically control the weight on the bit.

n: The equipment controlling the bit weight automatically during drilling.

n: The automatic operation that lands the drill stem automatically through the device controlling bit pressure to make the bit pressure sustained during drilling.

n: a device usually installed on the first joint of casing to regulate automatically the amount of mud in the casing. The valve in this shoe keeps mud from entering the casing until mud pressure causes the valve to open, allowing mud to enter.

n: The float shoe that is installed in the bottom of the casing string and can adjust the volume of drilling fluid in the casing. There is a valve in the float shoe. Only when the pressure of drilling fluid is big enough to open the valve can the drilling fl

n: a measuring device installed on the outside of a tank to permit observation of the depth of the liquid inside.

n: the flexible measuring or connecting element that is used to measure the liquid level in tanks by the automatic gauge method.

n: a mechanism in packers and other tools in which straight pickup or setdown action will set or release the tool. Rotation is not needed to set or release a tool with an automatic J.

n: an automatically operated station installed on a pipeline to provide pressure when a fluid is being transported.