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Line 59:
Line 59: − + − ! Overpressure − ! Underpressure − + − − − + − − − + − − − + − − − + − − − + − − − + − − − + − −
Pressure prediction: analysis of well-log and seismic data (view source)
Revision as of 16:06, 8 July 2014
, 16:06, 8 July 2014→Summary of log and seismic responses
{| class = "wikitable"
{| class = "wikitable"
|-
|-
! Log type
! Log type || Overpressure || Underpressure
|-
|-
| Drilling rate
| Drilling rate || Faster || Slower
| Faster
| Slower
|-
|-
| SP
| SP || May shift to negative || May shift to positive
| May shift to negative
| May shift to positive
|-
|-
| Gamma ray
| Gamma ray || May decrease slightly || May increase slightly
| May decrease slightly
| May increase slightly
|-
|-
| Resistivity
| Resistivity || Lower || Higher
| Lower
| Higher
|-
|-
| Conductivity
| Conductivity || Higher || Lower
| Higher
| Lower
|-
|-
| Density
| Density || Lower || Higher
| Lower
| Higher
|-
|-
| Travel time
| Travel time || Slower || Faster
| Slower
| Faster
|-
|-
| Seismic interval velocity
| Seismic interval velocity || Low || High
| Low
| High
|}
|}