Well Test Description pdf


 Chapter 1 - PVT Property Correlations
PVT property correlations....................................................................................................................................................1-1
Chapter 2 - SCAL Correlations
SCAL correlations................................................................................................................................................................2-1
Chapter 3 - Pseudo variables
Chapter 4 - Analytical Models
Fully-completed vertical well................................................................................................................................................4-1
Partial completion ................................................................................................................................................................4-3
Partial completion with gas cap or aquifer ...........................................................................................................................4-5
Infinite conductivity vertical fracture.....................................................................................................................................4-7
Uniform flux vertical fracture ................................................................................................................................................4-9
Finite conductivity vertical fracture.....................................................................................................................................4-11
Horizontal well with two no-flow boundaries......................................................................................................................4-13
Horizontal well with gas cap or aquifer ..............................................................................................................................4-15
Homogeneous reservoir ....................................................................................................................................................4-17
Two-porosity reservoir .......................................................................................................................................................4-19
Radial composite reservoir ................................................................................................................................................4-21
Infinite acting ...... ..............................................................................................................................................................4-23
Single sealing fault ............................................................................................................................................................4-25
Single constant-pressure boundary...................................................................................................................................4-27
Parallel sealing faults.........................................................................................................................................................4-29
Intersecting faults ..............................................................................................................................................................4-31
Partially sealing fault..........................................................................................................................................................4-33
Closed circle ....... ..............................................................................................................................................................4-35
Constant pressure circle ....................................................................................................................................................4-37
Closed Rectangle ..............................................................................................................................................................4-39
Constant pressure and mixed-boundary rectangles..........................................................................................................4-41
Constant wellbore storage.................................................................................................................................................4-43
Variable wellbore storage ..................................................................................................................................................4-44
Chapter 5 - Selected Laplace Solutions
Introduction......... ................................................................................................................................................................5-1
Transient pressure analysis for fractured wells ...................................................................................................................5-4
Composite naturally fractured reservoirs .............................................................................................................................5-5
Chapter 6 - Non-linear Regression
Introduction......... ................................................................................................................................................................6-1
Modified Levenberg-Marquardt method...............................................................................................................................6-2
Nonlinear least squares.......................................................................................................................................................6-4
Appendix A - Unit Convention
Unit definitions .... ............................................................................................................................................................... A-1
Unit sets.............. ............................................................................................................................................................... A-5
Unit conversion factors to SI............................................................................................................................................... A-8