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Electronic drifting of Tubulars
19 June 2009
We [BHPB Drilling, Australia] are looking into upgrading procedures for internally-drifting tubulars, wondering if it can be done with a laser or similar electronic means.

We are trying to avoid the need for personnel to handle heavy drifts.

Doug Hodson
BHP Billiton, Australia
2 answer(s)
Total Posts: 1
Join Date: 25/03/09
You may want to look at the approach of BJ Tubular Services: Electronic ID Measurement
Managing Director (
Relentless Pursuit Of Perfection Ltd.
Total Posts: 395
Join Date: 10/01/05

That's a great concept. The first thoughts that pop into my head are :
1. Whatever system would still have to serve to prove assemblies will pass through (so the drift would have to "mimic" a stiff stabiliser/bit combination).
2. If it could be done with great accuracy it would be an excellent tool for wellsite teams to use for displacement calculations.

I hope you get some excellent contributions.

Best wishes

Dave Taylor
Relentless Pursuit of Perfection Ltd
Posted by

Doug Hodson

Drilling Engineer

Chevron Corporation

Total Posts: 24
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