دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: refer todown-the-hole hammer drill

n: refer to down-the-hole hammer

n: a serial of drilling equipments with the shocking devices connected to the bit or the core bit through the core barrel,and the fluid driving the rotating head or the rotary table on the ground to propel the bit

n: refer todown-the-hole hammer drill

n: refer todown-the-hole hammer drill

n: a kind of compressor whose wind pressure and wind rate
range is fit for the down the hole air hammer tool and turntable air drill

n: a kind of tool with tungsten carbide insert filleted in the bottom surface ,used to break rocks under the impact force offered by hammer tool

n: a hammer like noise produced when fuel is not burned properly in a cylinder.

n: tool used to drive the conductor pipe into the ground. The single-acting diesel is the most popular. as it has the most foot -pounds of energy for the weight of the hammer. Other types of hammer include impact and vibrating.