"Tom Miller" wrote in message
...
Yep. That's about right as I remember. I didn't have anything to do
with
calculating the hardener, so don't know about that. The drilling engineer
used to come over and look at the calliper log to determine how much
cement
to run though. He'd just glance down the log and select a volume. Must
have
had divine assistance cause I sure couldn't have determined it from that.
One point though, Its actually casing that they stabilize with cement. The
drill pipe is out of the hole standing in the derrick. They case the hole
with a larger diameter casing and cement it in. They then use a smaller
bit
to drill from the bottom of the casing to total depth. On some of the deep
hole there would be three layers of casing between the formation & the
drill
pipe.



Casing. Right. Should have known that. That's what it's called in my well
out back too.

Garrett