Rotary Well Drilling Stem

Item Name Code (INC) 13672

Petroleum Production and Distribution Equipment: Federal Supply Class: FSC 3835; NATO Supply Classification Class: NSC 3835
Construction, Mining, Excavating, and Highway Maintenance Equipment: Federal Supply Group: FSG 38; NATO Supply Classification Group: NSG 38
Item Hits: 3

The uppermost joint of a string of drill pipe. It passes through the rotating mechanism of a rotary well drilling machine and may be rotated and simultaneously moved vertically by means of evenly spaced driving flutes or flats running lengthwise to within a few inches of either end. The upper end usually has a left-hand thread for connection by means of an adapter to the body of a swivel, but may also be connected to the adapter or swivel by means of a coupling. The lower end has a right-hand thread for connection to a short length of drill pipe.

Additional Information for Rotary Well Drilling Stem

Rotary well drilling stems are a type of equipment used in the petroleum production and distribution industry. They are specifically designed for rotary drilling operations, which involve the use of a rotating drill bit to penetrate the earth's surface and extract oil or gas.

The rotary well drilling stem is a critical component of the drilling rig and consists of several interconnected sections. These sections include the drill pipe, drill collars, and the drill bit. The drill pipe is a long, hollow tube that serves as the conduit for drilling fluid (also known as drilling mud) and provides structural support to the drill string. The drill collars are heavy, thick-walled steel pipes that add weight to the drill bit, helping to maintain the downward force required for drilling.

The drill bit is the cutting tool at the bottom of the drill string, responsible for breaking and crushing the rock formations. It comes in various types, such as roller cone bits or diamond bits, depending on the specific drilling requirements.

Rotary well drilling stems are essential for efficient and effective drilling operations in the petroleum industry. They are designed to withstand high pressures, torque, and vibrations encountered during drilling. These stems are typically made of high-strength steel alloys to ensure durability and longevity.

In summary, rotary well drilling stems are crucial components of drilling rigs used in the petroleum industry. They facilitate the drilling process by providing the necessary support, fluid circulation, and cutting capabilities to extract oil or gas from the earth's subsurface.