Figure F1. BHA schematic showing close up diagram of LWD/MWD tools. Drill strings for 12¼ and 10⅝ inch holes are sketched. Both configurations from bottom bit to arcVISION sensor, stabilizer, MWD, and drill collar are slightly different in length between bottom of bit to measurement points shown. DP = drill pipe, XO = crossover, NMDC = nonmagnetic drill collar, GR_MP = gamma ray measurement point, Res_MP = resistivity measurement point.
Close | Next | Top of page