Oilfield Glossary
Oilfield Glossary
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Well Testing

226 result(s) found.

well testing  Pressure measurements recorded near the productive interval form the basis for transient well-test analysis, and are primarily used for determining reservoir-rock properties and producing-formation limits. To understand this important discipline, well-testing experts have developed definitions ranging from average reservoir pressure to DST and well-interference testing. All definitions have been reviewed by experts in this field, and many are augmented by high-quality graphics. 

A

adjusted flow time anisotropic formation annulus average reservoir pressure
afterflow

B

back flow bottomhole pressure boundary conditions bubblepoint
backflow bottomhole shut in bounded reservoir buildup test
bilinear flow bottomhole shut-in bubble point

C

closed chamber testing commercial rate constant rate convolve
closed in well commingled completion continuity equation correcting pressure to a datum
closed-chamber testing compressibility convolution cushion
closed-in well condensate

D

Darcy units dewpoint drawdown test dual permeability reservoir
datum level diffusion equation drillstem test dual porosity reservoir
deconvolution directional permeability DST dual-permeability reservoir
depletion drainage area DST pressure chart dual-porosity reservoir
dew point drainage volume dual completion

E

early time transient data early-time transient data effective wellbore radius equation of state

F

fall off test finite conductivity fracture flow regime fracture conductivity
falloff test finite wellbore solution flow unit fracture gradient
final flow period finite-conductivity fracture flow-after-flow tests fracture half-length
final flow rate finite-wellbore solution flowing pressure fractured well analysis
final flowing pressure flow after flow tests flowing well fractured-well analysis
final shut in period flow efficiency fluid compressibility fracturing pressure
final shut-in period flow period formation fracture pressure free gas

G

gas condensate gas gravity gas well deliverability gas-well deliverability
gas deviation factor gas solubility factor gas/oil ratio (GOR) GOR
gas formation volume factor gas well gas-solubility factor

H

hammer union homogeneous formation humping hydrogen sulfide
heterogeneous formation Horner slope

I

ideal gas infinite conductivity fracture initial shut in period interference testing
image well infinite-acting reservoir initial shut-in period isochronal test
impermeable barrier infinite-conductivity fracture injection well testing isotropic formation
infinite acting radial flow initial flow period injection-well testing isotropic permeability
infinite acting reservoir initial reservoir pressure

K

kh

L

late time transient data layered reservoir testing line source solution line-source solution
late-time transient data limited entry linear flow liquid level
layer

M

material balance middle-time transient data modified isochronal test multiple rate tests
middle time transient data mobility multiphase flow multiple-rate tests

N

naturally flowing well non-Darcy flow nonideal gas

O

oil formation volume factor oil well open flow potential open-flow potential

P

partial completion pressure pressure transient analysis producing well
partial penetration pressure buildup pressure transient well tests production period
permeability pressure depletion pressure-drawdown analysis prorated well
permeability thickness pressure drawdown pressure-squared plot pseudopressure plot
phase redistribution pressure falloff pressure-transient analysis pseudosteady state
pore pressure gradient pressure gauge pressure-transient well tests pumping well
pore-pressure gradient pressure gradient producing formation pumping well tests
porous medium pressure squared plot

R

radius of investigation rate dependent skin effect rate-dependent skin effect reservoir heterogeneities

S

single phase flow spherical flow steady-state behavior superposition in time
single-phase flow stabilization subsurface pressure surface pressure
skin stabilized gas well superposition surface shut-in
skin effect static pressure superposition in space swivel flange
skin factor steady state behavior

T

three phase flow transient rate and pressure test analysis transient-rate and pressure-test analysis type curve analysis
three-phase flow transient-pressure response two phase flow type curves
transient drainage radius transient-pressure testing two-phase flow type-curve analysis
transient pressure

U

unitized production units conversion factor

V

variable rate

W

water formation volume factor well interference wellbore damage wellbore-storage effects
water influx well interference testing wellbore fill up well-interference testing
well cleanup well potential wellbore fill-up wireline formation test
well flow rate well production rate wellbore storage effects wireline formation tester

Z

zone