Well Test Analysis

Analysis of a flow test with smoothly varying rates

3.1

Analysis of a post-fracture – Constant-rate flow test with boundary effects

3.2

Analysis of a post-fracture pressure buildup test with wellbore-storage distortion

3.3

Analysis of a well from a PI test

3.4

Analysis of DST flow data with Ramey type curves

3.5

Average fracture permeability (pseudo-steady state case for pressure build-up test)

3.6

Bottomhole flowing pressure during infinite-acting pseudoradial flow

3.7

Calculation of pressure beyond the wellbore (line-source solution)

3.8

Conventional DST design without a water cushion (collapse pressure calculation)

3.9

Diffusion depth in a geothermal well

3.10

Dimensionless buildup pressure for field calculations

3.11

Dimensionless buildup pressure for liquid flow

3.12

Dimensionless buildup pressure for steam or gas flow

3.13

Dimensionless buildup time

3.14

Dimensionless cumulative production (radial flow constant-pressure production)

3.15

Dimensionless drawdown correlating parameter by Carter

3.16

Dimensionless length (linear flow constant rate production/hydraulically fractured wells)

3.17

Dimensionless length (linear flow/constant-rate production/general case)

3.18

Dimensionless pressure (linear flow/constant rate production/general case)

3.19

Dimensionless pressure (linear flow/constant rate production/hydraulicallyfractured wells)

3.20

Dimensionless pressure (radial-flow/constant pressure production)

3.21

Dimensionless pressure (radial-flow/constant rate production)

3.22

Dimensionless pressure drop across a skin at the well face

3.23

Dimensionless pressure drop during pseudo-steady state flow for a fractured vertical well in a square drainage area

3.24

Dimensionless pressure drop during pseudo-steady state flow for a horizontal well in a bounded reservoir

3.25

Dimensionless production time

3.26

Dimensionless rate (radial flow/constant pressure production)

3.27

Dimensionless shut-in time for MDH method

3.28

Dimensionless storage constant for gases

3.29

Dimensionless storage constant for liquids

3.30

Dimensionless time (linear flow/constant rate production/general case)

3.31

Dimensionless time (linear flow/constant rate production/hydraulically fractured wells)

3.32

Dimensionless time (radial flow/constant rate production)

3.33

Dimensionless time function (transient heat transfer to the formation)

3.34

Dimensionless wellbore storage coefficient (compressible fluids for pressure build-up test)

3.35

Flow period duration (hydraulically fractured wells)

3.36

Fracture conductivity (bilinear-flow regime in gas wells)

3.37

Fracture conductivity during bilinear flow

3.38

Inflow performance relationship (IPR) for horizontal wells in solution gas-drive reservoirs (Fetkovich)

3.39

Inflow performance relationship (IPR) for horizontal wells in solution gas-drive reservoirs (Vogel)

3.40

Interporosity flow coefficient in pressure build-up test

3.41

Minimum shut-in time to reach pseudo-steady state for tight gas reservoirs being hydraulically fractured

3.42

Permeability and reservoir pressure from buildup tests

3.43

Permeability and skin factor from a constant-rate flow test

3.44

Pressure buildup equation (Horner equation)

3.45

Radius of investigation

3.46

Radius of investigation (flow time)

3.47

Radius of investigation (shut-in time)

3.48

Raymer hunt transform (porosity/transit time relationship)

3.49

Reservoir permeability

3.50