dipmeter computation sheet, 392 



dipmeter surveys, 389 



directional drilling, 677 



documentation, 788, 789 



Dolan, J. P., 743, 863 



dolomite and calcite, differentiation, 



109-110 

 drafting of maps, 525-530 

 drill-stem testing, 350 

 drilling, core, 695 

 drilling, development, 857, 858 

 drilling, directional, 677 

 drilling fluids, 715 

 drilling mud, 363 

 drilling, off-shore, 687-689 

 drilling rate, 370 

 drilling, salt dome, 693 

 drilling time logging, 367 

 drilling-time logs, 52, 53, 385 

 drilling-time record, 382 

 drilling, turbine, 665 

 drilling, with gas and air, 735 

 DST pressure data, 743 

 DTA, 119 



DTA logs, 129, 130 

 Dunn, T. H., 715, 864 

 duties of petroleum geologists, 7 



Eckel, J. E., 763 



effective porosity, 232 



Einersen, C. A., 743, 864 



electric log profile, 268 



electric logging, 267 



electric logs, interpretation of, 316-326 



electric pilot, 396, 397 



electron-microscopic analysis, 141 



emission X-ray, spectrographic analysis, 



172 

 emulsion muds, 725, 726 

 engineering valuation, 796, 797 

 environments, microfossils, 205, 206 

 etch methods, 113-117 

 evaluation, formation, 766 

 examination of well cutting, 17 

 exploration planning, 815 

 exploration, reconnaissance, 821-826 



facies correlation, 443-445 



facies maps, 482-497 



Fairbanks method, 109, 110 



feldspar and quartz, differentiation, 110, 



111 

 feldspar, staining method, 110, 111 

 filter loss, 719, 720 

 Fitzgerald, P. E., 395, 865 

 fluid-velocity surveys, 401 

 fluoroanalysis, 629 

 fluorescence, oil, 359-361 



fluorologs, 629 

 foraminifera, 216, 217 

 formation evaluation, 766 

 formation factor graph, 271 

 formation resistivity, 269-273 

 formation resistivity, fluid saturation, 



272, 273 

 future of subsurface petroleum 



exploration, 9 



Gallatin limestone, glow curve, 187 



gamma-ray and neutron instrument, 333 



gas-base muds, 726 



gas detector, 358 



gas detector chart, 365 



gas displacement, 236 



gas logging, 624 



gas properties, 806-810 



gel strength, 719 



geochemical logging, 628 



geochemical prospecting, 621 



geologic maps, coloring, 518-524 



geological report, 784, 785 



Geolograph chart, 380 



geophysical operations, 829-835 



geophysical prospecting, 553 



geophysics, velocity logs, 420-422 



glauconite, 85 



glow curve, 180 



glow-curve apparatus, 184 



grain size, 33, 66 



grain-size classification, 34 



grain-size graph, 45 



gravity and magnetic effects of 



subsurface bodies, 585 

 grinding laps, 62 



H 



Hamilton, R. G., 389, 865 



Hasbrouck, W. P., 555, 866 



Haun, John D., 3, 866 



Hayes, John R., 95, 867 



heavy minerals, 103-108 



heavy-mineral identification, 107, 108 



heavy mineral separation, 104 



Hill, G. A., 743, 867 



histogram, 99 



Hoffmeister, William S., 203, 868 



Hollister, John C., 555, 868 



hot-wire gas detector, 358 



hot-wire tool, fluid velocity, 402-404 



hydrochloric acid etch, 114, 116 



I 



induction logging, 298-306, 428-430 

 inorganic crystals, thermoluminescence, 



186-194 

 insoluble residues, 75 

 insoluble residues, chart, 77, 78 



884 



