An exploitation model of the Cerro Prieto geothermal system is needed to assess the energy capacity of the field, estimate its productive lifetime and develop an optimal reservoir management plan. The model must consider the natural state (i.e., pre-exploitation) conditions of the system and be able to predict changes in the reservoir thermodynamic conditions (and fluid chemistry) in response to fluid production (and injection). This paper discusses the results of a three-dimensional numerical simulation of the natural state conditions of the Cerro Prieto field and compares computed and observed pressure and temperature/enthalpy changes for the 1973--1987 production period. 16 refs., 24 figs., 2 tabs.

A comprehensive analytical model is presented to study the pressure transient behavior of a naturally fractured reservoir with a continuous matrix block size distribution. Geologically realistic probability density functions of matrix block size are used to represent reservoirs of varying fracture intensity and uniformity. Transient interporosity flow is assumed and interporosity skin is incorporated. Drawdown and interference pressure transient tests are investigated. The results show distinctions in the pressure response from intensely and sparsely fractured reservoirs in the absence of interporosity skin. Also, uniformly and nonuniformly fractured reservoirs exhibit distinct responses, irrespective of the degree of fracture intensity. The pressure response in a nonuniformly fractured reservoir with large block size variability, approaches a nonfractured (homogeneous) reservoir response. Type curves are developed to estimate matrix block size variability and the degree of fracture intensity from drawdown and interference well tests.

This is the fourth Annual Water Quality Data Report for the Waste Isolation Pilot Plant (WIPP) in southeastern New Mexico. The WIPP project is operated by the United States Department of Energy (DOE) for the purpose of providing a research and development facility to demonstrate the safe disposal of transuranic radioactive wastes generated by the defense activities of the United States Government. This report presents water quality data collected from January 1988 through December 1988 from 16 designated pre-operational (WIPP facility) monitoring wells, two additional wells, and 10 privately-owned wells in the vicinity of the WIPP. Additionally, water samples were collected from the Air Intake Shaft during shaft construction activities at the WIPP. This report lists pertinent information regarding the monitoring wells sampled, sampling zone, dates pumped, and types of samples collected during 1988. Comparative data from previous samplings of all wells can be found in Uhland and Randall (1986), Uhland et al. (1987), Randall et al. (1988), as well as in this report. The data reported by the Water Quality Sampling Program in this and previous reports indicate that serial sampling is a very useful tool in determining sample representativeness from wells in the WIPP vicinity. Serial sample field …

Over 4100 ft (1100 ft oriented) of Mesaverde core was taken during the drilling of the three Multiwell Experiment (MWX) wells, for study in a comprehensive core analysis program. This core traversed five separate depositional environments (shoreline/marine, coastal, paludal, fluvial, and paralic), and almost every major sand in the Mesaverde at the site was sampled. This paper summarizes MWX core analysis and describes the petrophysical properties at the MWX site; reservoir parameters, including permeabilities of naturally fractured core; and mechanical rock properties including stress-related measurements. Some correlations are made between reservoir properties and mineralogy/petrology data. Comparisons are made between the properties of lenticular and blanket sandstone morphologies existing at the site. This paper provides an overview of a complete core analysis in a low-permeability sandstone reservoir. 66 refs., 17 figs. , 9 tabs.

Monthly magazine published by the Maverick Region of the Porsche Club of America containing stories related to the organization or of interest to the group's members including news, upcoming and past events, other feature articles, and classified advertisements.

Weekly newspaper from Jacksboro, Texas that includes local, state, and national news along with extensive advertising.

Weekly newspaper from Jacksboro, Texas that includes local, state, and national news along with extensive advertising.

Weekly newspaper from Jacksboro, Texas that includes local, state, and national news along with extensive advertising.

Magazine discussing natural resources, parks, hunting and fishing, and other information related to the outdoors in Texas.

Weekly newspaper from Jacksboro, Texas that includes local, state, and national news along with extensive advertising.

Weekly student newspaper from Tarleton State University in Stephenville, Texas that includes local, state and campus news along with advertising.

Weekly newspaper from Teague, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.

Semiweekly newspaper from Levelland, Texas that includes local, state, and national news along with advertising.

Weekly student newspaper from Howard Payne University in Brownwood, Texas that includes local, state and campus news along with advertising.

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.

Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state, and campus news along with advertising. Formerly The Campus Chat.

Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state, and campus news along with advertising. Formerly The Campus Chat.

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.

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Daily newspaper from Sulphur Springs, Texas that includes local, state, and national news along with advertising.