Two questions

[hlb]

Re: TCM

Na, we understand every fink. You should see my new Black and Decker. It will drill through anything. If you wobble it about a bit, you can have any shaped holes. Colin should get one of these!!

<font color=blue>Haydn

 

[ccscott49]

Re: TCM

Mud pulse transmitted, inside the drill string, the subsea ones are dead now. Only land based ones, used for foam and air drilling, which is not a lot these days. This one is very smart, magnetic surveying, inside the casing, no gyros!! This technology canbe used for all types of stuff, including steel ships compasses, withoiut need ing gyro compasses, very clever!