I read with interest your article "R&D programs yield advances in drilling technologies" (OGJ, Nov. 10, 2003, p, 55), in particular the sections on TTRD and coiled tubing.
You draw attention to the logging challenges in slim TTRD wells (similar challenges are faced in CTD wells). I was surprised and disappointed not to see the contribution of Reeves Oilfield Services acknowledged in this context. We pioneered the use of full logging suites in most of the North Sea fields you mention, and as I write this we are logging on Alaska's North Slope in a situation where no other logging company has a solution.
For the record, we were the first company to log triple combo measurements in a CTD well (back in 1993), and remain the only company capable of acquiring full-suite logs on CT without integral wireline. We pioneered full-suite TTRD logging in the North Sea in the first of the Cormorant wells you refer to. We logged the Bruce A13 and A22 wells you mention, and the Magnus B7 well.
The reason we logged these is that the service companies you acknowledge did not have a full logging solution. Most of them have had minimal, if any logging involvement in TTRD and CTD.
Peter Elkington
Reeves Oilfield Services
East Leake, UK
