... Abstract To maximize the coal seam gas production, it is critical to use geosteering to maintain the drill bit within coal seams. The gamma ray log is usually used as the coal/noncoal indicator to maintain the drill bit; however, the gamma ray log is a lagging indicator because its sensors...

... Reservoir Characterization complex reservoir organic matter permittivity bitumen delle piane log analysis Upstream Oil & Gas dielectric permittivity gamma ray siderite thermal maturity shale gas formation shale rock property porosity Marcellus Shale resistivity well logging...

... set of experiments (multiple well experiments) use the training data from multiple nearby wells, which can predict coal pay zones in a new well. The most important feature is gamma ray. After placing slotted casings, all wells have over 90% coal identification rates and three wells have over 99% coal...