Changes

|+ {{table number|1}}Comparison of steady-state and unsteady-state techniques

|+ {{table number|1}}Comparison of steady-state and unsteady-state techniques

|-

|-

! Steady-State

! Steady-State || Unsteady-State

! Unsteady-State

|-

|-

| Industry standard for 30 years

| Industry standard for 30 years || Determines more representative permeability ''k''_∞ instead of ''k''_air at reservoir conditions

| Determines more representative permeability ''k''_∞ instead of ''k''_air at reservoir conditions

|-

|-

| Convenient to use

| Convenient to use || Enhanced accuracy results from measurement of pressure versus time instead of rate

| Enhanced accuracy results from measurement of pressure versus time instead of rate

|-

|-

| Permeability is determined at low confining pressures

| Permeability is determined at low confining pressures || Measures additional reservoir description parameters: β and ''b''

| Measures additional reservoir description parameters: β and ''b''

|-

|-

|

| || Develops practical link with historical data

 

| Develops practical link with historical data

|}

|}