Drill Pipe Introduction

Drill pipe, is hollow, thin-walled, steel or aluminium alloy piping that is used on drilling rigs. It is hollow to allow drilling fluid to be pumped down the hole through the bit and back up the annulus. It comes in a variety of sizes, strengths, and wall thicknesses, but is typically 27 to 32 feet in length (Range 2). Longer lengths, up to 45 feet, exist (Range 3).

Drill stems must be designed to transfer drilling torque for combined lengths that often exceed several miles down into the Earth's crust, and also must be able to resist pressure differentials between inside and outside (or vice versa), and have sufficient strength to suspend the total weight of deeper components. For deep wells this requires tempered steel tubes that are expensive, and owners spend considerable efforts to reuse them after finishing a well.

Drill Pipe Feature

1. Light weight (lighter than the old-fashioned drill pipe 45%)

2. Footage soon, dust small vertical holes left after drilling cuttings, into a hole clear.

3. Card beans quickly and easily connect and save banding material.

Drill Pipe Size available:

"Q" Series: BQ, NQ, HQ, PQ

"W" Series: RW, EW, AW, BW, NW, HW

"WJ" Series: AWJ, BWJ, NWJ, KWJ, HWJ

Metric Series: 33, 42, 50

Drill Pipe Parameters

Drill Pipe Pictures