Researchers in crosswell seismic tomography attempt to image interwell velocity fields by using traveltimes of transmitted waves generated by a downhole source and recorded by downhole receivers.

This report summarizes results of an integrated geological, geophysical, petrophysical, and engineering study of a representative Delaware Mountain Group field to identify constraints on producibility in the deep-water sandstone reservoir exhibiting low primary recovery efficiency.

A multidisciplinary reservoir-characterization study of the Ellenburger Group was conducted over a 176-mi2 3-D seismic grid in Pecos, Reeves, and Ward Counties in the southern Delaware Basin of West Texas.

Between 1951 and 1996, groundwater pumpage from the Carrizo-Wilcox aquifer, one of Texas' major aquifer systems, increased in the area between the Colorado and Brazos Rivers from approximately 10,600 to 37,900 acre-ft/yr, primarily as a result of mining needs.

Salinization of soil and water is a chronic environmental and agricultural problem in arid regions.