General Setting
Information Search and Selection

Com ments

on

Geo logic

Para meters

1 Depth:

2 Permeability/Hydraulic Conductivity:

3 Formation Thickness:
4 Net Sand Thickness:
5 Percent Shale:
6 Continuity:
7 Top Seal Thickness:
8 Continuity of top seal:
9 Hydrocarbon Production:
10 Fluid Residence Time:
11 Flow Direction Elevation:

12

CO2 Solu bility Brine

 12a Temperature:
12b Pressure:
12c Salinity:
13 Rock/Water Reaction:
14 Porosity:
15 Water Chemistry:
16 Rock Mineralogy:

Paluxy Sandstone, East Texas Basin

Comments on Geologic Parameters

7 Top Seal Thickness:

There are several low permeability units above the Paluxy sand in the area of interest, including the Goodland Formation and Edwards Limestone. However, argillite/carbonate facies in these units are not mapped in detail in this area. Therefore, we have chosen the Kiamichi Formation as the top seal for the Paluxy aquifer. The Kiamichi is widespread throughout the area. In electric-log cross sections presented by Anderson (1989) it appears to be a fine-grained, low-resistivity unit. Anderson mentioned that it is composed of terrigenous clastics. Neeley (1991) described the Kiamichi in southeastern Oklahoma outcrops as being composed of mostly argillaceous oyster biostromes with minor interbedded, dark-gray clay and shale and a few hard, argillaceous limestone beds. We assume that basinward (in the study area), the Kiamichi consists of mostly clay and shale. Thus, we identified the Kiamichi as a seal for the Paluxy and gridded the data (c7paluxyg).

7 Map:

7 Reference:

Anderson, L. M., 1989, Stratigraphy of the Fredericksburg Group, East Texas Basin: Baylor Geological Studies, Bulletin 47, 40 p.

Neeley, R. A., 1991, Facies analysis of the Lower Cretaceous (Albian) Goodland and lower Kiamichi Formations of Southeast Oklahoma: Shale Shaker, v. 41, no. 5, p. 116–145.