What Does it Stand For

What Does BHA Stand For?

BHA stands for Bottom Hole Assembly

The bottom-hole assembly (BHA) is the component of the drill string that includes the core bit, outer core barrel, various subs, and the drill collars. It hangs below the drill pipe and provides weight to the drill or core bit to induce the teeth to penetrate the formation, thereby drilling a hole or recovering core to meet the scientific objectives of the cruise. The Ocean Drilling Program (ODP) employs different coring tools to obtain continuous, relatively undisturbed cores in all types of oceanic sediments and igneous basement.

Category : Scientific

URL : http://www-odp.tamu.edu/publications/tnotes/tn31/bha/bha.htm

Added on 11/02/2009 | Edit this acronym