About This Item
- Full TextFull Text(subscription required)
- Pay-Per-View PurchasePay-Per-View
Purchase Options Explain
Share This Item
The AAPG/Datapages Combined Publications Database
Rocky Mountain Section (SEPM)
Abstract
Regional Trends of Sandstone Porosity Versus Vitrinite Reflectance—A Preliminary Framework
Abstract
The porosity of sandstones is commonly observed to decrease during burial. Such decrease is frequently treated as a function of burial depth, but depth is a position coordinate that may not reflect the time-temperature history by which all subsurface processes are influenced. An alternative approach that is adapted in this study is to consider porosity decrease during burial as a function of thermal maturity. Such an approach links porosity evolution in the subsurface and the maturation of kerogen and petroleum, in that the vitrinite-reflectance measurements used to define porosity trends can also be used to characterize petroleum generation and destruction.
Trends of porosity versus vitrinite reflectance (Rm) of the form f=ARmB (where B is a negative number), characterizing both typical and highest sandstone porosities, are derived from 131 measurement suites incorporating 4,353 individual porosity measurements. Diverse sandstone facies and geologic settings are represented, and the data span a maturity range of Rm=0.25-1.7%. The porosity-Rm data form trends which are projected to maturities as high as Rm=7% in order to speculate upon the distribution of sandstone porosities in the very deep (mature) portions of sedimentary basins.
Pay-Per-View Purchase Options
The article is available through a document delivery service. Explain these Purchase Options.
Watermarked PDF Document: $14 | |
Open PDF Document: $24 |