Page 279 - Gas Wettability of Reservoir Rock Surfaces with Porous Media

Index 263

Q influence of gas wettability on, Single-straight capillaries, 164
Qualitative evaluation 161 gas wettability, 164 175
of gas wettability, 40 Rock evaluation of gas/oil system,
methods, 30 cuttings, 214 215 183
Quantum chemistry research, parameter and treatment of rock gas-displacing-oil in capillaries,
113 118 samples, 186t 173 175, 176f
calculation method, 114 115 property, 127 gas-displacing-oil in capillary,
calculation result Roll angle, 20 169 172
frontier molecular orbit of Routine performance test of main oil-displacing-gas in capillaries,
models, 115 117 surfactant, 235 172 173, 174f
effect of water molecules on water-displacing-gas in
model surface, 117 118 S capillaries, 164 168
establishment of calculation “Slipping” effect, 19
model Sandstone model, 114, 114f Soaking process, 60, 61f
gas-wetting alteration agent Saturated formation water, effect of Sodium bentonite, 203 205
model, 114 wettability on electrical Sodium carbonate, 7 8
sandstone model, 114 resistance of, 150 151 Sodium dodecylbenzene sulfonate,
Quantum chemistry theory of gas electrical resistance of cores with 16
adsorption capacity of rocks, different wettabilities, 151 Sodium sulfate (SDS), 100
131 141 experimental procedure, 150 151 Sol-gel processing, 21 24
adsorbed substance calculation, Scanning electron microscopy, Solid surface, 50, 164
134 141 146 147, 201, 202f free energy effect of solid surface
adsorption of different fluids on Screening on gas wettability
solids, 131 132 of cores, 185 experimental study, 69
calculation method selection, method, 219 theoretical study, 62, 66
132 133 SDS. See Sodium sulfate (SDS) preferential wettability of liquid
physicochemical parameters, 132t Second law of thermodynamics, 60 on, 1 2
wettability models, 133 134 Selective wetting isotherm, 3 4 Solid(s)
Quartz sand adsorbing methane Self-oil-adsorption gas recovery, adsorption of different fluids on,
experiment, 129 131 157 158 131 132
Quasistatic gas-displacing-water Self-water-adsorption gas recovery, solid/gas interface, 165 166
experiment, 171 157 158 Space steric effect, 105 106
Separation test, 241 SPAN80, 198
Sessile drop method, 30 31, Spin coating, 177
R 50 54, 164, 173. See also Spontaneous core imbibitions,
Relative permeability, 36 Bubble capture method experimental study of, 97 98
curve loop identification method, evaluation effect of wettability change on
35 36 index, 50 51 imbibition degree
curves method, 35 36 principle, 50 of gas/water system, 98f
Research status of gas wettability experimental evaluation of gas of oil/gas system, 98f
advancements in super- wettability, 51 54 Spreading process, 61, 61f
hydrophobic theory research, experimental materials, 52 Straight capillary wall surface,
19 24 experimental method, 52 quantitative evaluation of gas
in china, 10 19 experimental result and wettability of, 167
overseas, 6 10 discussion, 52 54 Styrene (St), 200
Reservoir Physics, 5, 194 measuring matrix effects, 75 76 Sulphur, 86
Reservoir rocks, 31 studying influence of surface free Super hydrophilic surfaces, 20
preferential wettability of gas on energy, 62 65 Super oleophilic surfaces, 20
reservoir rock surface, 5 6, 6f surface roughness effects, 78 79 Super-amphiphobic surface, 20
wettability, 2 4, 3f Silica nano particles, 21 Super-hydrophobic surface, 21 24
Reverse imbibition, 153 154. Silicon, 86 Super-hydrophobic theory research,
See also Unidirection Silicon dioxide, standard models of, advancements in, 19 24
imbibition 133, 133f Super-hydrophobicity, 23 24
process of cores, 160 161 Silicon oxide model, 133 Supercritical CO 2 extraction
experimental procedure, 160 Single variable method, 245 246 technology, 231