Other Functions of drilling fluids - PRIMARY FUNCTIONS OF A...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Stabilizing the wellbore o To achieve hole stability, the mud cake, the mud density, the flow properties, and the chemical activity of the mud may have to be adjusted and special coating material added to the drilling fluid Controlling formation pressures o The drilling fluid density should be adequate to contain any formation pressures encountered to prevent the influx of formation fluids into the wellbore and provide a safety margin while tripping pipe. o It must not be so high as to create excessive differential pressures, which will slow drilling rate and may also cause lost circulation and differential sticking. Transmitting hydraulic horsepower to the bit o The drilling fluid is the medium through which hydraulic horsepower is transmitted to the bit. o The viscoelastic drilling fluid will minimize the friction losses and maximize the available hydraulic horsepower at the bit. Cool and Lubrication of the Bit
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/27/2009 for the course PETROLEUM 384 taught by Professor Alighalambar during the Spring '08 term at University of Louisiana at Lafayette.

Page1 / 6

Other Functions of drilling fluids - PRIMARY FUNCTIONS OF A...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online