Page 456 - Hydrocarbon Exploration and Production Second Edition

Subject Index 443

floating roof, 296 unconformity, 155
settling, 276, 295 underpressured, 79
skimming, 276 fluid pressures, 133
wash, 276, 295 undersaturated, 122
target oil, 227 oil, 122
tariff, 6, 421 unfavourable displacement, 220
tax, 342 unit costs, 356
tax and royalty scheme, 342 unit of production method, 344
tax and royalty system, 9 unit technical costs, 356
TD. See total depth unitisation, 16
TDT. See thermal decay time unitised, 16
technical cost, 342 unmanned operations, 318
technical integrity, 319 unwanted fluids, 391
telecommunications, 318 uptime, 323, 397
tender assisted drilling, 50 UR. See ultimate recovery
tendering, 327, 335 utilities systems, 318
test separator, 315
testing, 315, 397
thermal decay time, 389 vaporisation, 122
thermal decay time log, 389 vapour pressure, 116, 117
curve, 116
thermal techniques, 226
variable OPEX, 342
thin oil rims, 227
venting, 317
through-tubing bridge plug, 391
vertical seismic profiling, 33
time value of money, 351
vibrating sources, 32
time-lapse seismic surveys (4D seismic),
45 viscosity, 58, 125, 267
time-lapse TDTs, 389 viscous forces, 221
timing, 24 volatile oil, 122, 127
tools volumetric estimation, 173, 178
neutron, 162 deterministic, 173
sonic, 163 probabilistic, 173
toolstring, 148
top hole, 62 waste
topdrive system, 53, 56 disposal, 317
tornado plot, 373 management, 93
total depth, 62 water
transit time, 163 alternating gas, 411
transition zone, 140 based muds (WBM), 58
transport of material, 96 connate, 97
traps, 19, 23 cut, 206
anticlinal, 23 density, 132
combination, 23 drive, 208
fault, 23 guns, 32
stratigraphic, 23 injection, 122, 206, 291
tri-ethylene glycol, 281 irreducible, 140
triple point, 116 pressure gradient, 134
true vertical depth subsea, 154 resistivity, 164
tubing, 391 treatment, 276, 413
corrosion, 391 viscosity, 133
performance, 241 wax, 131
string design, 392 weathering, 96
turndown ratio, 395 well
turnkey contract, 80 abandonment, 422
TVSS. See true vertical depth subsea completions, 244
two-phase envelope, 117 horizontal, 234
type log, 155 jackets, 299
killing, 422
ultimate recovery, 190 objectives, 60
umbilicals, 305 performance, 225, 390
uncertainty, 4, 177, 178, 187, 195, 338 planning, 47
ranking, 194 wildcat, 25