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:

Jasper Interval, East Texas Gulf Coast

Comments on Geologic Parameters

6 Continuity:

These sands are largely winnowed beach and barrier-island deposits, and therefore sand continuity in the thicker units is excellent (Ambrose, 1990). Local faulting, however, significantly influences sand-body continuity in the Texas City area. The net-sand map of the lower Miocene (6,150 ft) interval, as mapped by Ambrose (1990), was selected for use in the GIS because it highlights the continuity of the sand bodies in an orientation parallel to the present shoreline and because it highlights the importance of local faults in controlling the lateral continuity of these beach/barrier-island sands.

6 Map:

 

6 Reference:

Ambrose, W. A., 1990, Facies heterogeneity and brine-disposal potential of Miocene barrier-island, fluvial, and deltaic systems: examples from northeast Hitchcock and Alta Loma Fields, Galveston County, Texas: The University of Texas at Austin, Bureau of Economic Geology, Geological Circular 90-4, 35 p.