Oilfield Glossary
Oilfield Glossary
Search by Discipline
Terms beginning with:
# A B C D E F

Search Results

Searched for "IM" in All Fields (2255 result(s) found)

Variables and Numbers

a 1-D seismic data 2-way traveltime 4D seismic data
n 2D survey 3D survey 6FF40
1D seismic data


a adapter spool amines array
abnormal pressure additivity amplitude array laterolog
absolute age adhesion tension amplitude anomaly array sonic
absolute open flow potential adjusted flow time amplitude variation with offset arrival
absorbing boundary conditions advective transport modeling amplitude variation with offset and azimuth arrival time
abyss aeolian analog artificial intelligence
abyssal aeolotropy angle of approach artificial lift
accelerator aerated layer angle of incidence ASP flooding
accommodation AFE anhydrite asphalt
accumulator AGC anisotropic asphaltene onset concentration
acetic acid AGC time constant anisotropic formation asphaltenes
acid effect agglomeration anisotropy asthenosphere
acid inhibitor aggradation annular flow ASTM
acid job aggradational annular velocity attapulgite
acid stimulation aggregate annulus attenuation resistivity
acid wash aggregation antialias filter attitude
acidity air drill anticlinal attribute
acoustic air drilling anticline audio measurement
acoustic basement air wave antiwhirl bit aulacogen
acoustic impedance Alford rotation aperture authority for expenditure
acoustic impedance section alias filter API automatic gain control
acoustic log alidade API fluid loss test autotrack
acoustic mode aliphatic compound API fluid-loss test autotracking
acoustic positioning alkaline-surfactant-polymer flooding API unit AVAZ
acoustic transparency alkalinity apparent anisotropy average reservoir pressure
acoustic traveltime alkalinity test apparent dip average velocity
acoustic velocity allochthon apparent matrix AVO
acoustic velocity log allochthonous appraisal AVOAZ
acquisition allogenic Archie rock axial surface
acrylamide acrylate polymer alluvial areal displacement efficiency azimuth
acrylamide-acrylate polymer alluvium areal sweep efficiency azimuthal
active margin alpha processing arenaceous azimuthal density
active sulfide altered zone argillaceous azimuthal laterolog
activity of aqueous solutions aluminum activation log aromatic hydrocarbon azimuthal resolution
acyclic compound


back flow battery bitumen bottoms up
back in Bc black list bottoms-up
back pressure beam bland coring fluid Bouguer correction
back propagation bean choke blast joint Bouma sequence
back up ring Bearden units of consistency blasting cap bound fluid
back wash bed blended crude bound water
backflow bed thickness blender bound-fluid log
background gas bed wrap blind box box plots
back-in bedrock blow out Boyle's Law
back-pressure beneficiate blow out preventer break circulation
back-propagation beneficiation blow-by breakdown pressure
back-up ring BGG blowdown valve (BDV) breaker
backward multiple-contact test BHA blowout breakout tongs
backwash BHCT blowout preventer bridging agent
bactericide BHST Boltzmann probability distribution bridging material
bad hole BHT Bond number Briggs color cube
balanced plug bicenter bit Boolean simulation bright spot
ball out big hole charge booster brine
ballout big-hole charge BOP Brookfield viscometer
band bilinear flow BOP stack brownfield
band limited function bimetallic corrosion borehole correction BS&W
band pass bimetallism borehole gravity bubble count
band reject bin borehole gravity meter bubble flow
band-limited function Bingham plastic model borehole orientation bubble-tight shutoff
band-pass bioaccumulation borehole seismic data bucking coil
band-reject bioassay borehole televiewer bucking current
bank firing biocide Born method buffer
barite bioconcentration bottle test bulk relaxation
barrel equivalent biodegradation bottom log interval bullhead
base exchange biostratigraphic bottom sample bundle
base log biostratigraphy bottomhole assembly buoyancy method
base map Biot theory bottomhole circulating temperature burn shoe
baseline biphasic bottomhole gas separator butt weld
basement bit nozzle bottomhole static temperature button resistivity
basin bit resistivity bottomhole temperature bypass velocity
batch treatment


C pump centrifugal pump coal controlled time survey
cable-tool drilling centrifuge coating convergence
cake chalk COD convergent
calcite channel COFCAW convolution
calcium carbonate channeling cogeneration convolve
calcium chloride Charpy test coherence core
calcium hydroxide check shot survey coiled tubing core analysis
calcium mud check-shot survey coiled tubing connector core image
calcium oxide chelating agent coiled tubing drilling core testing
calcium sulfate chelation coiled tubing string coreflooding
calibration chemical barrel coiled tubing unit coring fluid
caliche chemical cutter cokriging correlation
caliper log chemical diversion cold heavy oil production with sand corrosion
cap chemical diverter cold production corrosion control
cap rock chemical flooding collapse pressure corrosion coupon
capacitance meter chemical injection collision corrosion inhibitor
capillary number chemical neutron source combination string corrosion rate
capillary pressure curve chemical oxygen demand commingled completion cosolvent
capillary suction time test chemical potential common midpoint method coupon
capillary-suction-time test chert compaction CPMG
caprock cherty compaction correction cracking
capsule gun chlorite compartment craton
carbide lag test chrome lignite compatibility critical damping
carbon dioxide chrome tubing compensated density log critical flow rate
carbonate chronostratigraphic chart compensated neutron log critical gas flow rate
carbonate ion churn flow compensated-density log critical moment
carbonate scale circle shooting completion critical rate
carboxymethyl hydroxyethylcellulose circulate completion quality (CQ) cross section
carboxymethyl starch circulation sub composite log crosscorrelate
carboxymethylcellulose circulation time compositional fluid analysis crosscorrelation
carrier fluid classical reservoir modeling Compton scattering crosscorrelation flowmeter
casing clastic intrusion computed tomography crossflow
casing centralizer clastic sediment concentric crosslinker
casing grade clathrate conceptual model crossplot
casing inspection log clay concession crossplot porosity
casing point clay bound water condensate liquids crosswell electromagnetic tomography
casing shoe test clay extender condensed section crosswell reflection tomography
casing string clay stabilizer conditional simulation crosswell seismic tomography
casing-inspection log clay swelling conductance crown block
catagenesis clay-bound water conductive rock matrix model crushed zone
cathodic protection clean conductivity crust
cation exchange capacity cleanup conductometric titration crystallization temperature
cation-exchange capacity clear brine conductor pipe CSS
catwalk closed chamber testing conformable CT
caustic potash closed in well conical projection cubic packing
cavitation closed mud system connate water cumulative production
CEC closed-chamber testing consistency curve matching
cellulosic polymer closed-in well consistometer cushion
cement closure consolidated cut and thread fishing technique
cement accelerator cluster consolidation cut point
cement bond log cluster analysis contact angle cut-and-thread fishing technique
cement dispersant CMC contact time Cutt point
cement retainer CMC-Hi Vis contaminant cycle skip
cement retarder CMC-HVT continental shelf cycle time
cement squeeze CMC-Lo Vis continuous reservoir cyclic steam injection
cementation CMC-LVT contour cycling plant
cementing plug CMHEC contract depth cyclothem
centralizer CMS control line


damage depth section dipole drill noise vertical seismic profile
damping depth-derived dipole field drill ship
darcy derrick floor dipping bed drill solids
Darcy units derrickman directional driller drillable packer
data rate desiccant directional drilling drilled solids
datum detectable limit directional permeability driller
datum correction detector directional survey drill-in fluid
datum level deterministic methods directivity drilling break
day rate detonating cord dirty drilling contractor
DD detonator disconformity drilling crew
Dean-Stark extraction detrital dispersant drilling detergent
deconvolution detritus dispersed bubble flow drilling procedure
deep penetrating charge deviated drilling dispersion drilling program
deep-penetrating charge deviation survey displacement drilling rig
deepwater play diagenesis distributed temperature log drilling riser
deep-water play diagenetic distributed-temperature log drilling-fluid engineer
deflector flowmeter diameter of invasion distribution drill-noise vertical seismic profile
deflocculated mud diameter of investigation diurnal variation drillship
dehydrate diamond bit divergence drillstem test
delay rental diatom diversion droop
delta diatomaceous diverter drop bar
delta t diatomite diverter flowmeter dropoff gun
delta t stretch dielectric propagation log diverting agent drop-off gun
deltaic difference map Dix formula dry bed dehydrator
delta-t stretch differential compaction DMO dry hole
density contrast differential pressure dog leg dry oil
density current differential pressure sticking dogleg dry-bed dehydrator
density measurement differential spectrum dolomite DST
depletion differential sticking dolomitization DST pressure chart
deposit differential weathering correction dolostone dual completion
depositional energy diffraction stack domain dual induction
depositional environment diffusion dope dual-permeability reservoir
depositional system diffusion equation downhole sensors dual-porosity reservoir
depth conversion dike downward continuation dump bailer
depth derived dilatancy theory drainage volume dye penetrant inspection
depth map dilution water drained test dyke
depth matched dim spot drape dynamic correction
depth migration dip drawworks dynamic filter press
depth of invasion dip correction drift dynamic filtration
depth of investigation dip fault drill collar dynamic-aging test
depth reference point dip moveout drill in fluid


early time transient data elastic limit emulsion mud escape line
early-time transient data elastic moduli end point estimated ultimate recovery
eccentric elastic neutron scattering endless tubing Euclidian dimension
eccentricity elasticity endpoint Euclidian distance
ECD electric probe enhanced diffusion eustasy
echo spacing electrical coupon enhanced oil recovery eustatic
EDA electrical impedance probe entrance hole evaporite
eddy current electrical log eolian evaporitic
eddy current measurement electrical resistance probe EOR event
eddy-current measurement electrical stability test Eötvös number excess cement
effective laminar flow electrical survey epithermal neutron porosity measurement exit velocity
effective medium theory electrode device equalizing valve expanding cement
effective permeability electrode resistivity equivalent circulating density expectation
effective porosity electrokinetic potential equivalent water resistivity expendable gun
effective wellbore radius electromagnetic caliper equivalent weight expert system
eigenvector electromagnetic propagation measurement erode extensive dilatancy anisotropy
elastic electromagnetic thickness erosion external cutter
elastic anisotropy emulsifier error external disturbance field
elastic constants emulsion ES test external pulling tool
elastic deformation emulsion flow


facies fish fluid flow frac gel
facies modeling fishing fluid loss control frac gun
farmout fishing diagram fluid-density log frac job
fast formation arrival fishing tool fluid-friction reducer frac manifold
fast-formation arrival five spot fluid-loss control fractal
fatty acid five-spot fluoboric acid fractal analysis
fatty acid soap f-k domain fluoroscopy fracture
fatty-acid soap flag flushed zone fracture acidizing
fault flange flux leakage fracture conductivity
FD flat gels foam diversion fracture networks
feldspar flattened section foam flooding fractured well analysis
fence diagram flexural mode fold fractured-well analysis
Fermat's principle FLNG formaldehyde fracturing fluid
field float collar formation damage fracturing manifold
field weld float joint formation evaluation while drilling fracturing sleeve
filter float shoe formation exposure time free gas
filter cake flooding pattern formation factor free water
filter cell flow after flow formation pressure frequency domain
filter press flow after flow tests formic acid fresh core
filtercake flow assurance forward modeling fresh water
filters flow efficiency forward multiple-contact test Fresnel zone
filtrate slump flow line forward problem friction reducer
filtrate tracer flow model fossil froth flow
filtration test cell flow regime four dimensional seismic data FT
filtration tester flow simulation four-dimensional seismic data full waveform
final flow period flow structure Fourier analysis Full-azimuth towed-streamer acquisition
final shut in period flow-after-flow tests Fourier synthesis fullbore
final shut-in period flowline Fourier transform fullbore spinner
fines migration flue gas Fourier transform infrared spectroscopy funnel viscosity
fingerboard fluid density log frac fluid


gamma ray densitometer gelled mud geosteer gravel-pack gun
gas anchor gelled up mud geosteering gravel-pack log
gas buster gelled-up mud geothermal gradient gravity
gas cap generation Geronimo line gravity drainage
gas chimney geochemical log gilsonite gravity toolface
gas drive geochronology gin pole gravity units
gas holdup log geologic time scale glauconite greedy algorithm
gas hydrate geomagnetic polarity reversal glycol green gas
gas lock geomagnetic polarity time scale glyph green list
gas processing plant geomagnetic secular variation GPTS gridding algorithm
gas show geomechanics gradiomanometer gross production
gas well geometrical factor grain density growth fault
gasdrive geophone granite guard electrode
gas-holdup log geophone offset granular LCM guide shoe
gauge hole geopressure granular lost circulation material gumbo
gauge ring geopressured granular lost-circulation material gun
Gaussian collocated cosimulation geostatistical methods gravel pack gun zero
Gaussian techniques geostatistical modeling gravel pack gun gyp mud
gel strength geostatistics gravel pack log


halite high explosive horizon slice hydraulic fracture monitoring
hard rock high shot density gun horizontal drilling hydraulic fracturing
harmonic high side toolface horizontal tree hydraulic head
harmonic distortion high-pressure air injection hostile environment hydraulic horsepower
heater treater high-pressure, high-temperature filtration test hot lime hydraulic power pack
heavy metal high-pressure, high-temperature viscometer hot oiler hydraulic power unit
HEC high-shot density gun Hough transform hydrocarbon
hectorite highside toolface HP starch hydrocarbon indicator
held by production high-side toolface HPHT filtration test hydrochloric acid
Herschel Bulkley fluid history matching HPHT viscometer hydrofluoric acid
Herschel-Bulkley fluid hodogram HPU hydrofluoric hydrochloric acid
heterogeneity holdup HSE hydrofluoric-hydrochloric acid
heterogeneous holdup image Humble formula hydrostatic bailer
HF holdup log humping hydrostatic head
HHP holdup map hydrate hydrostatic pressure
hiatal holdup meter hydraulic bypass hydroxyethylcellulose
hiatus hook hydraulic centralizer hydroxypropyl starch
hierarchical cluster analysis hook load


ICD indicator methods injection test invaded zone
ideal gas induced particle plugging injection well invasion
igneous induced polarization injection well testing inverse filter
IM induction injection/pulsed neutron log inverse problem
image inertial resistance injection-well testing ion exchange
image well infill drilling injectite IP
imbibition infinite acting radial flow injectivity test IPA
immature infinite acting reservoir intelligent well iron stabilizer
immiscible infinite-acting reservoir intensifier iron sulfide
impedance inflatable packer interfacial tension irreducible water
impeller inflow control device interference testing isochron
impermeable information theory internal pulling tool isochron map
impermeable barrier initial flow period international nautical mile isochronal test
impressed current anodes initial shut in period interpretation isopropanol
improved oil recovery initial shut-in period interval method isopropyl alcohol
impulse activation injection line interval time isotropic formation
impulsive seismic data injection pattern interval transit time iterative forward modeling
incident angle injection pulsed neutron log


J slot jet jet nozzle junk basket
jar jet hopper J-slot junk pusher


kelly kh Kirchhoff migration Koch curve
kelly hose Kirchhoff equation knot kriging weights


lacustrine leakoff liner long path multiple
lag leakoff test line-source solution long spacing sonic log
lag gas leaky mode liquid saturation method longitudinal relaxation
lag time leonardite listric fault long-path multiple
laminar flow licensing round lithification long-spacing sonic log
lamination life of the well lithosphere lost circulation
landing collar lifting sub live cement lost returns
Laplace equation lignite load cell lost-circulation material
late time transient data lignosulfonate local holdup LOT
late-time transient data lime mud local probe low colloid oil mud
latex limestone log low solids mud
layer cake geometry limestone compatible scale logging run low-colloid oil mud
layer-cake geometry limestone-compatible scale logging tool low-pressure, low-temperature filtration test
lbm/bbl limited entry logging unit low-solids mud
LC50 line source solution logging while drilling LS
lead acetate test lineament logging-while-drilling LWD
leak off linear flow


Mf measure point minimum miscibility concentration mud cleaner
magnetic field measurement after drilling minimum miscibility enrichment mud cup
magnetic flux leakage measurement range minimum miscibility pressure mud engineer
magnetic reversal sequence measurements while drilling minimum restriction mud hopper
magnetic toolface measurements-while-drilling mis tie mud out
magnetic-flux leakage mechanical specific energy miscible displacement mud out sample
magnetics mechanical sticking mist drilling mud pit
magnetotelluric method meniscus mist flow mud program
main magnetic field metamorphic mis-tie mud report
make up water metamorphism mixed metal silicate mud return line
makeup cathead meter capacity mixed-metal silicate mud tracer
make-up water methane hydrate MMC mud-aging cell
managed pressure drilling methyl orange alkalinity MME mudcake
marginal well methylene blue dye MMS mudding off
marine microannulus mobility buffer mud-out sample
marine drilling riser microbial enhanced oil recovery mobility control mudrock
marine flooding surface microcylindrical log model Multiazimuth towed-streamer acquisition
marl microemulsion modified isochronal test multi-capacitance flowmeter
marsh microlaterolog modulus of compression multipass method
Marsh funnel microlog modulus of elasticity multiphase
Marsh funnel viscosity micropaleontology Moho multiphase flow
mass balance microporosity Mohorovicic discontinuity multiphase fluid flow
mast microresistivity Monte Carlo risk analysis multiphase holdup log
master valve microseismic monitoring Monte Carlo sampling multiphase meter
material balance microspherical log Monte Carlo simulation multiphase pump
material balance equation middle time transient data mousehole multiple completion
Material Safety Data Sheet middle-time transient data moveable hydrocarbons multiple isotope log
material-balance equation midoceanic ridge moved hydrocarbons multiple rate tests
matrix migrate moveout multiple reflection
matrix acidizing migration MRS multiple regression
matrix stimulation Milankovitch cycles MSDS multiple-isotope log
maturation mill out MT multiple-rate tests
maturity mill shoe mud mute
maximum flooding surface milligrams per liter mud acid mutual solvent
maximum treating pressure milling mud aging cell MWD
maximum working pressure (MWP) mineral mud cell mysid shrimp
Maxwell's equations


n net profits interest NMR normality
naphthenic hydrocarbon neural networks NODAL* analysis normal-moveout correction
natural fracture neutral point noise NPDES
natural gamma ray spectroscopy neutron capture noise log NRM
natural gas neutron log nonconformity nuclear fluid densimeter
natural remanent magnetism neutron porosity non-Newtonian fluid nuclear magnetic resonance
nautical mile Newtonian fluid normal fault nuclear magnetic resonance measurement
near surface correction nitrified fluid normal incidence numerical model
near-surface correction nitrogen injection normal moveout numerical reservoir simulation
neat cement NMO normal moveout correction


Occam's inversion oil pool one way time OSPAR
OCMA oil sand one-dimensional seismic data ovality limit
offset oil swelling one-way time over travel
offset vertical seismic profile oil water contact open flow potential overbalance
offset VSP oil well open hole overflush
offset well oil wet open-flow potential overpressure
Ohm's law oil-base mud openhole overshot
oil and gas lease oil-emulsion mud openhole test overtravel
oil and gas separator oilfield operating gas-lift valve (OGLV) OWC
oil bank oil-mud emulsifier optical probe oxide closure model
oil base mud oil-water contact organic acid oxide-closure model
oil emulsion mud oil-wet OSHA oxygen activation
oil field one dimensional seismic data


Pf phase velocity log pore pressure transmission primary production
Pm phase-shift resistivity pore-pressure gradient primary recovery
PAC phase-velocity log pore-pressure transmission primary reflection
packer fluid phosphate salt porosity primary term
packing gland photon log porosity exponent prime mover
paid up lease PHPA porous primer cord
paid-up lease PHPA mud porous plate technique principal axis
paleontology pick positive displacement motor principal component analysis
paludal pickle post probability
palynology pickling fluid potassium ion produced fluid
PAO pickup potassium mud produced water
paraffin inhibitor pick-up potential field production
paraffinic hydrocarbon pig pounds per barrel production casing
paraformaldehyde pill pour point production log
parameter pilot test power law fluid production payment
PARCOM pilot-operated regulator power-law fluid production penalty
particle plugging apparatus pipe dope PPA production period
particle-plugging apparatus pipe rack PPT production string
partitioning pipeline capacity precipitate profile modification
party chief pipeline oil precipitation progradation
passive margin PIT precision progressive gels
pay pitting preflush propagation resistivity
PDM plankton prehydrated bentonite propagation time
peak plant prehydration propylene glycol normal propyl ether
PEF plate tectonics premium thread prorated well
peg leg multiple platform preservative prospect
peg-leg multiple play back preserved core proximity log
pendant-drop tensiometer playback pressure buildup pseudoplastic
perforate plug flow pressure buildup analysis pseudopressure plot
perforating acid plunger lift pressure capability pseudosteady state
perforating gun plunger overtravel pressure drawdown pull up
permanent datum PNP pressure gauge pull-up
permanent well monitoring POD pressure gradient pulse echo
permeability point bar pressure hunt pulsed neutron holdup log
permeability thickness point of departure pressure integrity test pulsed neutron spectroscopy measurement
permeable Poisson's ratio pressure squared plot pulsed-neutron holdup log
petrographic polarity standard pressure transient analysis pulse-echo
petrography polarization time pressure transient well test pumpability
petroleum system polyalphaolefin pressure transient well tests pumper
petroleum systems modeling polyanionic cellulose pressure-squared plot pumping time
petrophysical model polyglycerol pressure-transient analysis pumping well
pH test polymer flooding pressure-transient well tests pumping well tests
phase polymer plug pressurized mud balance push down
phase shift polyphosphates primary cementing push-down
phase shift resistivity pore pressure primary completion components pyrophosphate
phase velocity pore pressure gradient


Q quartz quick lime quicklook
quadrant density quebracho quick look quitclaim


racking back pipe reef reservoir characterization model rheological property
radial faulting reefal reservoir description rheology
radial response reel reservoir heterogeneities rheology modifier
radio safe detonator reeled tubing reservoir pressure rhombohedral packing
radio silence reference point reservoir simulation rich gas
radioactive tracer log reflection residence time Rich-azimuth towed-streamer acquisition
radioactive-tracer log reflection coefficient residual bend rig
radio-safe detonator reflection tomography residual oil rig floor
radius of curvature reflectivity residual oil saturation right angle set
radius of investigation refractor resin right-angle set
ram blowout preventer refracturing resistivity ring resistivity
random error regression resolution ringworm corrosion
random walk method regressive resolution matched rising-bubble apparatus
random-walk method relative age response matched RM
range of load relative filtrate volume retarder rock
rate of shear relative permeability retention time roll a tank
raw natural gas relaxation time retort method roller cone bit
ray tracing relaxed filtrate oil mud retort solids roller-cone bit
real time data relaxed-filtrate oil mud retrievable bridge plug rolling aging test
real-time data remaining oil saturation retrievable gun rolling-aging test
ream remedial cementing retrogradation ROS
receiver repeat section reverse circulating valve rotary hose
reciprocate repeatability reverse circulation rotary steerable system
recorded data replacement velocity reverse fault rotary table
recoverable gas lift gas reproducibility reverse-circulating valve roughneck
recovery factor reserve pit reversing out round trip
recovery forecast reservoir rheologic rugosity
red mud reservoir characterization rheological running tool


S wave seismic-while-drilling vertical seismic profile sloughing shale standpipe
s.g. seismograph slow formation starch
sabkha seismology slowing-down time static aging test
safety joint seismometer slowness static correction
safety spacer selective perforating slowness time coherence static filtration
salt selective running tool slowness-time coherence static pressure
salt dome semisubmersible sludge static-aging test
salt proximity survey sensitivity slug statics
salt proximity vertical seismic profile separator slug flow stationarity
salt proximity VSP sepiolite slugging compound steady state
salt-proximity vertical seismic profile sequence boundary slurry stability steady state behavior
salt-proximity VSP sequence stratigraphy small pore water steady-state behavior
saltwater flow sequential Gaussian simulation small-pore water steam
saltwater mud sequestering agent snubbing force steam chamber
sample frequency setting tool sodium acid pyrophosphate steam management
sample interval severance sodium bicarbonate steam oil ratio
sample rate shaker sodium phosphate steam-oil ratio
sampling error shale sodium silicate stearate
sampling interval shale baseline soft rock step profile
sand bailer shale shaker Solar terrestrial rhythms stimulation
sand cleanout shaly solid desiccant stimulation byproduct
sand lifting shear rate solubility stimulation fluid
sand production shear stock solution gas Stoneley permeability
sand trap shear strength sonde error Stoneley wave
sandface shear stress sonic log storm choke
sandstone shear wave sonic measurement strap
sandstone petrography shelf sonolog strata
SARA analysis shifting tool SOR stratified flow
saturation equation shoe sorting stratigraphic trap
saturation exponent shoe joint sour corrosion stratum
saver sub shoe track source pattern stress corrosion cracking
scale inhibitor shoot a level source rock stress induced anisotropy
scattergram shoot a well SP stress-corrosion cracking
SCC short trip space frequency domain stress-induced anisotropy
scintillation detector short-path multiple space out strike
scout ticket shrimp test space-frequency domain strike fault
scraper shutoff valve spacer strip gun
scratcher side pocket mandrel spacer fluid stripping
screen side scan sonar specific gravity stripping ram
screen out side-pocket mandrel spectrum structural steering
screening side-scan sonar spherical flow structure map
screenout sidewall spinner flowmeter stuck
scrub Sierpinski gasket spinning chain subduction
seal sieve analysis spontaneous potential submersible drilling rig
secondary cementing signature deconvolution spot subsalt
secondary migration silicate mud spot sample subsidence
secondary porosity index siliciclastic sediment spotting sulfate reducing bacteria
secondary production similar fold spotting fluid sulfate-reducing bacteria
secondary recovery simple multiple spread sulfide
secondary reflection simulated annealing spreading loss sulfide stress cracking
secondary term simultaneous operation (SIMOP) spud superposition
secondary-porosity index single pass method spud mud superposition in space
sediment single-pass method spurt loss superposition in time
sedimentary sized calcium carbonate square log surface casing
sedimentary basin sized salt squeeze cementing surface pipe
sedimentation skin squeeze packer surfactant flooding
seep skin depth squeeze pressure surfactant-alternating gas
seismic skin effect squeeze tool surge reliever
seismic acquisition slaked lime SRB survey
seismic impedance slant stack stability meter suspended solids
seismic interpretation slide stabilization swaging tool
seismic line slim hole well stabilized gas well S-wave
seismic modeling slime forming bacteria stable arch sweet corrosion
seismic reflection tomography slime-forming bacteria stack sweet crude
seismic section slimhole well stacking velocity swellable packer
seismic stratigraphy slim-tube test stage separation syncline
seismic trace slip and cut staged fracturing synthetic fault
seismic velocity slip lock stand pipe synthetic seismogram
seismic wave slip-and-cut standoff systems tract
seismic while drilling vertical seismic profile


T1 thermal simulation TOC traveltime
T2 thickening time toe to heel air injection treater
tadpole thief tomography treatment fluid
tail cement thixotropic tool joint trend
tail mute thixotropy top drive trough
tail pipe thorium topdrive true dip
Taitel Dukler thread protector torque flowmeter true vertical depth
Taitel-Dukler three dimensional survey total organic carbon tube wave
tangential wave three phase flow total solids tubing puncher
tank bottoms three-dimensional survey tracer ejector measurement tubing-end locator
tank calibration three-phase flow tracer loss measurement tubingless completion
tapered cutoff threshold velocity tracer-ejector measurement tubular jar
tapered string through-conduit tracer-loss measurement tuning effect
TE through-tubing track turbidite
tectonics tick mark transgression turbidity current
telluric current method tie transgressive turbulent flow
telluric-current method tight transient drainage radius TVD
temperature gradient tight gas transient pressure two dimensional survey
temperature log tight oil transient-pressure testing two pass method
tensor methods time after bit transit time two phase flow
term lease time domain transition flow two way traveltime
terrestrial time lapse transition zone two-dimensional survey
tertiary recovery time lapse seismic data transpression two-pass method
test separator time migration transtension two-phase flow
Texas deck time slice transverse electric mode two-way traveltime
thermal capture timed slug analysis transverse magnetic mode TWT
thermal diffusion length timed-slug analysis transverse relaxation type curve analysis
thermal gradient time-lapse trap type curves
thermal neutron absorber time-lapse seismic data trapped oil type-curve analysis
thermal neutron porosity measurement TM traveling valve


Udden-Wentworth scale uncertainty unconventional resource uniformitarianism
ultralow interfacial tension uncertainty principle underream unsteady state
ultrasonic caliper unconfined compressive strength undrained test upgrader
ultrasonic inspection unconformity uniaxial compressive strength upward continuation


VAPEX velocity velocity string viscosity
vapor extraction velocity analysis velocity-shot measurement viscosity and gel-strength test
variable-density log velocity correction vertical resolution vitrinite
varimax rotation velocity image vertical response vitrinite reflectance
variogram velocity layering vertical seismic profile volumetric efficiency
varve velocity map vibratory seismic data VSP
vee door velocity shot measurement vinyl polymer vugular porosity


WAG water drive weak point wet oil
wait on cement water flood weathering correction wettability
wait time water flow log weevil wettability change
walk above vertical seismic profile water gun weight indicator whole core
walk above VSP water influx weight material Wide-azimuth towed-streamer acquisition
walk-above vertical seismic profile water loss weighting agent wiggle trace
walk-above VSP water mud weighting material wildcat
walkaway vertical seismic profile water production well cleanup window
walkaway VSP water wet well control Winsor phase behavior
wall cake water-alternating gas well interference testing wiper plug
wall sticking water-base drilling fluid well log wire clamp
Walsh-Hadamard transform water-base mud well placement wire wrapped screen
Walther's law water-cut meter well plan wireline
wash out waterdrive well potential wireline cutter
wash over waterflood well production rate wireline formation tester
washout waterflooding well shoot wireline grab
washover water-flow log well stimulation wireline log
washover shoe water-wet wellbore diagram wire-wrapped screen
water alternating gas wave equation wellbore orientation WOC
water base drilling fluid waveform well-interference testing workover
water base mud wavelet Wentworth scale worm
water block wavelet extraction wet combustion wormhole
water cut meter


X signal X-radiography X-signal


yield yield point YP


Z/A effect zinc bromide zip collars zipper manifold
zero phase zinc chloride zip groove zone