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:

Frio Formation, Texas Gulf Coast

Comments on Geologic Parameters

12b Formation Pressure:

Kreitler and others (1988) used final shut-in pressures from drill-stem tests and bottom-hole pressures to construct pressure-depth profiles and potentiometric surfaces to determine flow gradients. In order to characterize this thick formation with heterogeneous salinity, Kreitler and others (1988) plotted averaged Frio data slices defined on depth. We include the output from 4,000 to 6,000 ft and 6,000 to 8,000 ft as best matching our target. Data quality is an issue with this data set, as are large vertical and horizontal variables related to natural overpressure and pumpage-induced underpressure.

12b Reference:

Kreitler, C. W., Akhter, M. S., Donnelly, A. C. A, and Wood, W. T., 1988, Hydrology of formations for deep-well injection, Texas Gulf Coast: The University of Texas at Austin, Bureau of Economic Geology, unpublished contract report, 204 p.