RE:buyreallow do you frace the end of drill to get gas readingNo, not opinion, other than interpretation of the data. The well bore has several sensors that measure things such as pressure, density and other data about the downhole. This allows better direction of the drillhead, to remain within the intended target zone. Provides as they drill data about the hole. Drill bits no longer have to be drilled straight down. They are able to be STEERED in the direction desired.