Related by context. Frequent words. (Click for all words.) 60 Barnett Shale formation 57 Paradox Basin 56 hydrocarbon reservoirs 56 sandstone reservoirs 55 Woodford shale 54 Upper Jurassic 53 Marcellus shale formation 53 previously undrilled 53 drilled horizontally 53 seismically defined 53 #,#-#,# ft. Loc 53 Lower Cretaceous 52 Notikewin 52 clastic 52 unconventional reservoirs 52 Montney formation 52 undrilled 52 Chicxulub crater 52 South Timbalier 52 graben 52 horizontal lateral 52 Bakken shale 52 Chattanooga Shale 52 diatreme 52 Lower Tertiary 52 Piceance Uinta Basins 51 sandstone reservoir 51 Bakken shale formation 51 Wolfcamp 51 Woodford Shale 51 stockwork zone 51 Appalachian basin 51 Utica shale 51 mineralized breccia 51 Horizontal drilling 51 Bakken formation 51 Upper Cretaceous 51 areal extent 51 surface outcrops 51 tungsten mineralization 51 Paleocene 50 geochemically anomalous 50 Coalbed methane 50 porosities 50 favorable stratigraphy 50 skarn mineralization 50 IP chargeability 50 conductive zones 50 gossanous 50 quartz feldspar porphyry 50 northerly trending 50 Shaft Zone 50 Footwall Zone 50 Ebouri 50 vuggy silica 50 stockwork veining 50 El Compas 50 Filo de Oro 50 Beaverhill Lake 49 Paluxy 49 breccia pipes 49 Mesaverde 49 QEP Energy 49 Yegua 49 diatomite 49 Raton Basin 49 Main Homestake 49 Coal seam 49 breccia pipe 49 geologic formation 49 Homestake Silver 49 wellbores 49 Williston basin 49 surface bulk tonnage 49 sandstone formations 49 Barnett shale 49 deepwater discoveries 49 horizontal wells drilled 49 Haynesville shale 49 directionally drilled 49 hydrothermal breccia 49 gravity anomalies 49 alluvium 49 MCFPD TD #,# 49 sedimentary basins 49 sq. mi 49 carbonate reservoirs 49 Niobrara Shale 49 Cooper Eromanga Basin 49 drillable 48 stibnite 48 Permian basin 48 lateritic 48 copper molybdenum porphyry 48 geologic formations 48 Veta Madre 48 Marcellus wells 48 magnetite mineralization 48 lava tubes 48 erosional 48 Nikanassin