Sandstone porosity as a function of thermal maturity
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Abstract
Sandstone porosity decreases in the subsurface as a power function of thermal maturity: ϕ = A(M)B, where ϕ is porosity and M is a measure of thermal maturity representing integrated time-temperature history; A and B are constants for a given sandstone of homogeneous properties but vary between data sets. The commonly observed exponential dependence of sandstone porosity upon depth follows as a special case from this power-function relation when temperature increases linearly with depth. The consideration of sandstone porosity in terms of time-temperature exposure offers advantages in the comparison of porosity data from diverse geologic settings, the recognition of unusual porosity within a sandstone sequence, and the prediction of porosity ahead of the drill and at times in the geologic past.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Sandstone porosity as a function of thermal maturity |
| Series title | Geology |
| DOI | 10.1130/0091-7613(1988)016<1007:SPAAFO>2.3.CO;2 |
| Volume | 16 |
| Issue | 11 |
| Year Published | 1988 |
| Language | English |
| Publisher | Geological Society of America |
| Description | 4 p. |
| First page | 1007 |
| Last page | 1010 |
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