posted on Nov, 7 2010 @ 04:09 PM
Today they did a BHA weight test. BHA stands for Bottom Hole Assembly....here is the definition....
bottomhole assembly
1. n. [Drilling] ID: 1231
The lower portion of the drillstring, consisting of (from the bottom up in a vertical well) the bit, bit sub, a mud motor (in certain cases),
stabilizers, drill collar, heavy-weight drillpipe, jarring devices ("jars") and crossovers for various threadforms. The bottomhole assembly must
provide force for the bit to break the rock (weight on bit), survive a hostile mechanical environment and provide the driller with directional control
of the well. Oftentimes the assembly includes a mud motor, directional drilling and measuring equipment, measurements-while-drilling tools,
logging-while-drilling tools and other specialized devices. A simple BHA consisting of a bit, various crossovers, and drill collars may be relatively
inexpensive (less than $100,000 US in 1999), while a complex one may cost ten or more times that amount.
Alternate Form: BHA
See: antiwhirl bit, crossover, directional drilling, dogleg, jar, logging while drilling, measured depth, stand, sub, threadform