SUBJECT INDEX 



1189 



Potential (continued) 



-drop, ratio-compensator, 545, 546 



electric-, 448, 449, 457, 466 



-gradient method (electrical), 545 



gravitational", 258, 294-298 



-logging method {see Self-potential logging) 



methods (electrical), 459, 535 

 * of gravity, 258, 294-298 



self-, {see Self-potential) 



-sonde, 1025 

 Potentiometer, 448 

 Pressure control, 1140 

 Pressure-wave method: 



calculating depth to fluid, 1129 



fluid-level reflections in, 1127-1129 



Reflectogram equipment in, 1128 



Reflectogram field procedure, 1129 



tubing collar reflections in, 1127, 1129 



wave created by cartridge, 1127, 1129 



wave created by compressed gas, 1127 

 Primacord detonating fuse, 862, 863 

 Production problems: 



bottom-hole pressure, 1122-1125, 1133 



casing-head pressure, 1134-1136 



condition affecting production rate, 1135 



fluid-density, 1130-1132 



fluid-level {see Fluid-level measurements and 

 Pressure-wave method) 



formation pressure, 1133 



"friction pressure" loss, 1123, 1124 



patents, 1141, 1142 



principles underlying, 1122-1124 



productivity determinations, 1134-1136 



subsurface pressures, 1130, 1133, 1134 



solution of pumping problems {see Pumping 

 problems), 1136-1139 

 Productivity determinations: 



index measurements, 1135 



pressure-rate curve, 1134, 1135 



under casing-head pressure, 1136 



wells with low casing-head pressure, 1134 

 Proportional counter, 1004, 1005 

 Public liability and property damage insurance, 



1152, 1153 

 Pulsator, 1055-1056, 1070 

 Pulse chamber, 1003, 1004 

 Pulse correlation (seismic), 703-704 

 Pulsed radio navigation system, 905, 906 



Radar beacons pulse system, 908, 909 



Radar system, 906, 907 



Shoran system, 908, 909 

 Pumping problems, solution of: 



dynamic measurements, 1136-1138 



maximum efficiencies, 1138, 1139 

 Pyrrhotite: 



density of, 265 



resistivity of, 442 



susceptibility of, 161, 164 



Quartz: 



density of, 264 



Q 



Quartz (continued) 



magnetic susceptibility of, 165 

 resistivity of, 442 



R 



Radar navigational system, 906, 909 

 Radio surveying techniques, 905-911 

 C. W. phase system, 905, 906, 909 

 Decca system, 909 

 Lorac system, 909, 910 

 navigational radar, 906, 907 

 Pulsed system, 905, 906 

 Radar Beacon pulse system, 908 

 Ratran system, 908 

 Raydist system, 910, 911 

 Shoran system, 908 

 Radioactive elements, 991-993 

 Radioactive marker: 

 applications, 1090 

 bullets, 1089, 1090 

 field operation, 1090 

 Radioactivity, theory of: 



absorption of radiation, 989-991 



alpha emission, 988 



beta emission, 988 



equilibrium, 993, 994 



electron-volts (and Mev), 988 



natural radioactive elements, 991-993 



quanta, 988 



statistical error, 994 



types of nuclear decay, 988 



alpha emission, 988 



beta emission, 988, 989 

 K-capture, 989 

 Radioactivity interpretation: 

 effect of casing, 1105 

 for contaminated or interbedded 



formations, 1103, 1104 

 for formations of unusually high 



intensity, 1104, 1105 

 for surface formations, 1103, 1104 

 for uncontaminated formations, 1103, 1104 

 formation intensity ranges, 1102, 1103 

 of neutron curve, 1105-1107 

 Radioactivity logging instruments: 

 amplifiers, 1098, 1100 

 electrometer, 1099 

 gamma-ray and neutron logging 



instruments, 1097 

 instrument truck, 1098 

 ionization chamber, 1098, 1099, 1100 

 recorder, 1100, 1101 

 Radioactivity measuring devices: 

 counting, by ear, 999 

 counting rate and statistical error, 994 

 counting rate meter, 1000-1003, 1007 

 electronic equipment, 1004, 1005 

 Geiger-Miiller counters {see Geiger counters) 

 G-M tube, 1003 



ionization chamber, 996, 997, 1002 

 photographic nuclear emulsion, 1005 

 portable instruments, 997 



