Page 25 - Practical Petroleum Geology, 2nd Edition

Index PRACTICAL PETROLEUM GEOLOGY

predicting costs for, 161 development of theories of origins of, 83–84
three-dimensional seismic surveying in, 122 differentiation, 97–98
Petroleum Extension-The University of Texas at Austin
oil and gas accumulations. See also traps formation of, 1–2, 1f, 14
history of, 83 limestone and, 69
migration, 89–93 migration of, 89–93
origins of, 84–89 physical factors in formation of, 88
trapping and differentiation, 94–96 reasons for failure to survive, 112
oil saturation, 97–98, 136 sandstones and, 66
oil shale, 69 shale and, 67
oil–water contact, 97f, 98, 108 source rocks for, 89
olefins, 85f time for formation and accumulation of, 89
trapping, 94
oolites, 40, 41f undiscovered, 5f
open-hole wells, 196 petroleum engineer, 189
operators/owners, of one reservoir, 201–202, 201f petroleum exploration. See also explorationist, petroleum;
Ordovician period, 77, 214 exploratory wells; offshore exploration
organic theory, 1, 11, 83–84 collecting data for, 117
original horizontality, law of, 70, 71f, 78 geophysical surveys, 118–128
original lateral continuity, law of, 78 reservoir development tools, 129–145
orthoclase, 29 risks in, 151, 165–167, 181
orthorectified Landsat data, 114 surface geological studies, 113–117
Outer Continental Shelf, leasing of, 156 petroleum explorationist, 113, 114, 150. See also
outer core, 17, 17f geologist, duties of; petroleum exploration
overriding royalties, 156 petroleum gas, 84
overthrust fault, 80f, 81, 102f petroleum migration. See migration of petroleum
overturned fold, 79, 79f petroleum window, 88, 88f
oxbow lake, 51 petrophysical evaluations, 181
oxidation, 38 petrophysicist, 186
oxygen, petroleum formation and, 87 Petty, Dabney E., 124
Petty, O. Scott, 124
Petty Geophysical Engineering Company, 124
Pacific plate, 26 Petty-Ray Geophysical, 124
packers, 190, 192, 193f phosphorite, 69
paleoenvironmental analysis, 139 photosynthesis, 12, 17, 18
Paleozoic era, 12–13, 13f, 77, 112 physical laws, 6
Palmieri, Luigi, 123 physical weathering, 36–38
Pangaea, 14, 22, 23f piezoelectric transducer, 188
paraffin, 84, 85f pinchout trap, 106, 106f
party chief, 121 pitch, 84
pay zone, 157, 196, 197, 218 plagioclase, 29
Pennsylvanian period, 57 plate convergence, 27–28, 27f
percentage method, 160 plate tectonics, 19–21, 25–26
perforations, 191, 192, 193f, 195, 195f playas, 51
permeability plugged and abandoned wells, 150, 204
changes in creating traps, 106–107, 106f plunging fold, 79, 79f
effective, 94 plutonic rock, 31
heterogeneities and, 226 plutons, 28
petroleum and, 2, 2f polarity, Earth, 21
relative, 94 pooling, 155, 155f
in secondary migration, 93, 93f porosity
Permian period, 23f, 57, 77 cementation and, 64
petroleum. See also hydrocarbons in estimating reserves, 218–219
biological factors in formation of, 86–87 petroleum and, 2, 2f
chemical factors in formation of, 84, 85f petroleum migration and, 90

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