Sentence examples for between the drill string from inspiring English sources

The new model, seen from the derivation, considered the heat transfer between the drill string and the annulus.

How to reduce the WOB error due to slide friction between the drill string and the borehole wall?

The high-pressure air passes through the ground high-pressure air trachea, injection pipeline and air injection connector into the annulus between the drill string and casing.

The drill string is hollow so that drilling fluid can be pumped down through it and circulated back up the annulus, creating clearance between the drill string and the casing/open hole (ASME 2011).

The rotation of a compression-buckling rotation drill string can increase the frictional force between the drill string and borehole wall, induce lateral vibration and whirl of the drill string, generate borehole wall instability and drill string damage, and even cause a drilling failure.

Lubricant additives are added to drilling fluids to lower the drag and torque between the drill strings and rock formation.

Direct circulation requires that the drilling mud flows from the slush pump into the annulus space between the outside of the drill string and the inside of the borehole.

In gas-drilling operations, the gas pressure in the drill string is in a narrow range between 7 and 10 MPa.

The law of rock fragmentation during drill string impacts is investigated using simulations; later, relationships between the rock fragmentation volume and the drill string impact are developed under different conditions (contact lengths of the drill string, impact speeds, rotation speeds, well depths and rock softening).

Therefore, it is expected that there would be a direct relationship between drilling mud density and the stress applied on the drill string.

One potential solution is Intellipipe, a telemetry system that relies on cables embedded in the pipe walls of the drill string, with inductive coupling to transmit data between pipe segments.