Drilling log
From Wikimarcellus
Driling logs are the sometimes called the currency of natural gas drillers. Each well has a detailed record of the rock types found as the well is drilled. Geophysical logs are also kept as the drilling proceeds.
Driling logs are the sometimes called the currency of natural gas drillers. Each well has a detailed record of the rock types found as the well is drilled. Geophysical logs are also kept as the drilling proceeds.