Equations: Well testing and pressure transient analysis
The equations of the “Well testing and pressure transient analysis” lessons with their conditions and units, and what each symbol means in this discipline.
This discipline has many equations, so its reference is split by subject: each subject page lists its equations with their conditions and units, and a table of symbols.
224 equations6 topics
Inflow to a well62 equations · 183 symbolsWell inflow: the well performance diagram · Steady-state radial flow · Pseudo-steady-state flow and the shape factor · Skin factor · Partial penetration and well deviation · Water and gas coning · Inflow at high rates: non-Darcy flowTransient testing: fundamentals21 equations · 57 symbolsWell testing: purposes and types of test · Dimensionless well solutions: skin, radius of investigation and units · Pressure drawdown analysis · Pressure build-up analysisWellbore storage and type curves41 equations · 112 symbolsWellbore storage · Type-curve matching · Diagnosis with the pressure derivative · Effect of producing time on build-up analysis · Nonideal wellbore storage, well clean-up and changing skinBoundaries and late-time behaviour29 equations · 81 symbolsA sealing fault near the well: the method of images · Several boundaries: parallel faults and wedge-shaped blocks · Semi-infinite systems: theory and test analysis · Partially communicating faultsBounded drainage area26 equations · 77 symbolsReservoir limit test · Build-up in a bounded reservoir and average reservoir pressure · Equivalent producing time and synthetic flowing time · Testing in a developed reservoir: Slider's methodDistributed pressure measurements45 equations · 185 symbolsPressure measurement with the wireline formation tester · Supercharging and permeability from formation-tester pretests · Comparing formation-tester, core and well-test data · Pressure gradients, fluid contacts and capillary equilibrium · Forced-gradient technique and multi-well analysis · Perched and tilted contacts, trapped water · Pressure measurements in producing reservoirs: barriers and accuracy · Two-phase flow and reservoir description from formation-tester data · Lumped multi-tank material balance model