bottom-hole assembly

bottom-hole assembly

[′bäd·əm ¦hōl ə‚sem·blē]
(petroleum engineering)
That portion of the drilling assembly that extends beyond the drill pipe.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Currently picking up bottom-hole assembly, including log while drilling equipment ("LWD"), to drill ahead.
"A wireline system will cost from $75,000 to $125,000, depending on the outside diameter size of the non-magnetic bottom-hole assembly and type of probe."
He says that the technological adaptation was made possible by careful analysis of bottom-hole assembly procedures in oil drilling, combined with an advanced computer modeling capability.