drill stem

He crossed a cattle guard built from salvaged drill stem.

The Zululand bore eventually bottomed out at 6,000 metres with a drill stem and no oil.

All wells were drill stem tested.

Well testing taking place before permanent well completion is referred to as drill stem testing.

The operator's hand does not have to reach the end of the drill pipe and drill stem extensions can be several meters long.

The drill stem houses the drill bit, and the vibrations push the bit into the material.

The bit is mounted onto a drill stem, which is connected to a rotary drill.

The structure was anchored by a recycled oil field drill stem that was reused to make a central mast more than 55 feet high.

Potential productive zone are isolated and performed formation testing and drill stem testing.

Used drill stem is often sent to a yard for inspection, sorted, and stored until new drill sites can be explored.

During normal well drilling, drilling mud is pumped through the drill stem and out of the drill bit.

The repetitive impact on the drill stem by the free mass, creates stress pulses that transmit to the tip of the bit and into the rock.

Maintaining the drill stem centered has many beneficial effects, its primary one being minimizing unintentional hole-angle directional drilling.

Directional drilling stem is made from heat-treated high-carbon steel for strength and ships in diameters of 8 - 15 cm.

His third well, the "Daisy Bradford No. 3", struck "black gold" in the Woodbine sand at 3592 feet on a drill stem test.

At this point only a few regiments had been equipped with rifles, notably the 60th and the 95th whose special rifle drill stems from this time.

Drill stem sections are manufactured in 3.0 or 4.6 and also 9.1 meter lengths and have male threading on one end, and female on the other.

The company's services include well logging, cementing and acidizing, drill stem test, well testing, training and development, and general services.

Shut-in procedures are usually developed and practiced for every rig activity, such as drilling, tripping, logging, running tubular, performing a drill stem test, and so on.

The drill string consists of both drill pipe and the drill stem which is the tubular portion closest to the bit or downhole assembly.

One poor devil had been bisected by a huge, thin spear of metal, apparently one of the drilling stems stowed aboard the Regina Mavis.

The free mass vibrates between the drill stem and the horn of the actuator to transmit the vibrations down the drill stem.

Percussion action is performed by lifting the drill stem with a rope over a pulley, attached to a simple derrick, made with whatever available wood or bamboo poles.

A valve is opened, reducing the pressure in the drill stem to surface pressure, causing fluid to flow out of the packed-off formation and up to the surface.

Additionally, the second function of a roller reamer is to keep the drill stem in the center of the hole at the specific position of placement of the roller-reamer.