Evaluation of Oil-Industry Stimulation Practices for Engineered Geothermal Systems (open access)

Evaluation of Oil-Industry Stimulation Practices for Engineered Geothermal Systems

Geothermal energy extraction is typically achieved by use of long open-hole intervals in an attempt to connect the well with the greatest possible rock mass. This presents a problem for the development of Enhanced (Engineered) Geothermal Systems (EGS), owing to the challenge of obtaining uniform stimulation throughout the open-hole interval. Fluids are often injected in only a fraction of that interval, reducing heat transfer efficiency and increasing energy cost. Pinnacle Technologies, Inc. and GeothermEx, Inc. evaluated a variety of techniques and methods that are commonly used for hydraulic fracturing of oil and gas wells to increase and evaluate stimulation effectiveness in EGS wells. Headed by Leen Weijers, formerly Manager of Technical Development at Pinnacle Technologies, Inc., the project ran from August 1, 2004 to July 31, 2006 in two one-year periods to address the following tasks and milestones: 1) Analyze stimulation results from the closest oil-field equivalents for EGS applications in the United States (e.g., the Barnett Shale in North Texas) (section 3 on page 8). Pinnacle Technologies, Inc. has collected fracture growth data from thousands of stimulations (section 3.1 on page 12). This data was further evaluated in the context of: a) Identifying techniques best suited to developing a …
Date: October 17, 2007
Creator: Dyke, Peter Van; Weijers, Leen; Robertson-Tait, Ann; Warpinski, Norm; Mayerhofer, Mike; Minner, Bill et al.
Object Type: Report
System: The UNT Digital Library
Cherokeean Herald (Rusk, Tex.), Vol. 158, No. 34, Ed. 1 Wednesday, October 17, 2007 (open access)

Cherokeean Herald (Rusk, Tex.), Vol. 158, No. 34, Ed. 1 Wednesday, October 17, 2007

Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date: October 17, 2007
Creator: Whitehead, Marie
Object Type: Newspaper
System: The Portal to Texas History
The GV Tribune (Grandview, Tex.), Vol. [112], No. [32], Ed. 1 Friday, August 17, 2007 (open access)

The GV Tribune (Grandview, Tex.), Vol. [112], No. [32], Ed. 1 Friday, August 17, 2007

Weekly newspaper from Grandview, Texas that includes local, state, and national news along with advertising.
Date: August 17, 2007
Creator: Ray, Teri
Object Type: Newspaper
System: The Portal to Texas History
Věstník (Temple, Tex.), Vol. 95, No. 3, Ed. 1 Wednesday, January 17, 2007 (open access)

Věstník (Temple, Tex.), Vol. 95, No. 3, Ed. 1 Wednesday, January 17, 2007

Weekly Czech and English language newspaper from Temple, Texas published as the official organ of the Slavonic Benevolent Order of the State of Texas that includes news of interest to members along with advertising.
Date: January 17, 2007
Creator: Zavodny, Melanie
Object Type: Newspaper
System: The Portal to Texas History
The Nocona News (Nocona, Tex.), Vol. 101, No. 49, Ed. 1 Thursday, May 17, 2007 (open access)

The Nocona News (Nocona, Tex.), Vol. 101, No. 49, Ed. 1 Thursday, May 17, 2007

Weekly newspaper from Nocona, Texas that includes local, state, and national news along with advertising.
Date: May 17, 2007
Creator: Mesler, Tracy R. & Mesler, Linda L.
Object Type: Newspaper
System: The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 125, No. 39, Ed. 1 Thursday, May 17, 2007 (open access)

Polk County Enterprise (Livingston, Tex.), Vol. 125, No. 39, Ed. 1 Thursday, May 17, 2007

Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date: May 17, 2007
Creator: White, Barbara
Object Type: Newspaper
System: The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 131, No. 50, Ed. 1 Thursday, May 17, 2007 (open access)

The Albany News (Albany, Tex.), Vol. 131, No. 50, Ed. 1 Thursday, May 17, 2007

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date: May 17, 2007
Creator: Lucas, Melinda L.
Object Type: Newspaper
System: The Portal to Texas History
Direct Carbon Sequestration: Capturing and Storing CO2 (open access)

Direct Carbon Sequestration: Capturing and Storing CO2

None
Date: January 17, 2007
Creator: Folger, Peter
Object Type: Report
System: The UNT Digital Library
Final Report and Strategic Plan on the Feasibility Study to Assess Geothermal Potential on Warm Springs Reservation Lands. (open access)

Final Report and Strategic Plan on the Feasibility Study to Assess Geothermal Potential on Warm Springs Reservation Lands.

In 2005 the Confederated Tribes of Warm Springs Tribal Council authorized an evaluation of the geothermal development potential on the Confederated Tribes of Warm Springs Reservation of Oregon. Warm Springs Power & Water Enterprises obtained a grant from the U.S. Department of Energy to conduct a geological assessment and development estimate. Warm Springs Power & Water Enterprises utilized a team of expert consultants to conduct the study and develop a strategic plan. The resource assessment work was completed in 2006 by GeothermEx Inc., a consulting company specializing in geothermal resource assessments worldwide. The GeothermEx report indicates there is a 90% probability that a commercial geothermal resource exists on tribal lands in the Mt. Jefferson area. The geothermal resource assessment and other cost, risk and constraints information has been incorporated into the strategic plan.
Date: May 17, 2007
Creator: Manion, James & McClain, David
Object Type: Report
System: The UNT Digital Library
Comanche Chief (Comanche, Tex.), No. 3, Ed. 1 Thursday, May 17, 2007 (open access)

Comanche Chief (Comanche, Tex.), No. 3, Ed. 1 Thursday, May 17, 2007

Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date: May 17, 2007
Creator: Wilkerson, James C., III
Object Type: Newspaper
System: The Portal to Texas History
De Leon Free Press (De Leon, Tex.), Vol. 116, No. 45, Ed. 1 Thursday, May 17, 2007 (open access)

De Leon Free Press (De Leon, Tex.), Vol. 116, No. 45, Ed. 1 Thursday, May 17, 2007

Weekly newspaper from De Leon, Texas that includes local, state, and national news along with advertising.
Date: May 17, 2007
Creator: Kestner, Laura
Object Type: Newspaper
System: The Portal to Texas History
SEADS 3.0 Sectoral Energy/Employment Analysis and Data System (open access)

SEADS 3.0 Sectoral Energy/Employment Analysis and Data System

SEADS 3.0, the Sectoral Energy/Employment Analysis and Data System, is a revision and upgrading of SEADS–PC, a software package designed for the analysis of policy that could be described by modifying final demands of consumer, businesses, or governments (Roop, et al., 1995). If a question can be formulated so that implications can be translated into changes in final demands for goods and services, then SEADS 3.0 provides a quick and easy tool to assess preliminary impacts. And SEADS 3.0 should be considered just that: a quick and easy way to get preliminary results. Often a thorough answer, even to such a simple question as, “What would be the effect on U. S. energy use and employment if the Federal Government doubled R&D expenditures?” requires a more sophisticated analytical framework than the input-output structure embedded in SEADS 3.0. This tool uses a static, input-output model to assess the impacts of changes in final demands on first industry output, then employment and energy use. The employment and energy impacts are derived by multiplying the industry outputs (derived from the changed final demands) by industry-specific energy and employment coefficients. The tool also allows for the specification of regional or state employment impacts, though …
Date: December 17, 2007
Creator: Roop, Joseph M.; Anderson, David A.; Schultz, Robert W. & Elliott, Douglas B.
Object Type: Report
System: The UNT Digital Library
Temporary Tax Provisions (“Extenders”) Expiring in 2007 (open access)

Temporary Tax Provisions (“Extenders”) Expiring in 2007

None
Date: October 17, 2007
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Rio Grande Herald (Rio Grande City, Tex.), Vol. 94, No. 19, Ed. 1 Thursday, May 17, 2007 (open access)

Rio Grande Herald (Rio Grande City, Tex.), Vol. 94, No. 19, Ed. 1 Thursday, May 17, 2007

Weekly newspaper from Rio Grande City, Texas that includes local, state and national news along with extensive advertising.
Date: May 17, 2007
Creator: Roberts, Kenneth
Object Type: Newspaper
System: The Portal to Texas History
The Llano News (Llano, Tex.), Vol. 119, No. 16, Ed. 1 Wednesday, January 17, 2007 (open access)

The Llano News (Llano, Tex.), Vol. 119, No. 16, Ed. 1 Wednesday, January 17, 2007

Weekly newspaper from Llano, Texas that includes local, state, and national news along with advertising.
Date: January 17, 2007
Creator: Stephenson, Jimmy
Object Type: Newspaper
System: The Portal to Texas History
Cherokeean Herald (Rusk, Tex.), Vol. 157, No. 48, Ed. 1 Wednesday, January 17, 2007 (open access)

Cherokeean Herald (Rusk, Tex.), Vol. 157, No. 48, Ed. 1 Wednesday, January 17, 2007

Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date: January 17, 2007
Creator: Whitehead, Marie
Object Type: Newspaper
System: The Portal to Texas History
Archer County News (Archer City, Tex.), No. 20, Ed. 1 Thursday, May 17, 2007 (open access)

Archer County News (Archer City, Tex.), No. 20, Ed. 1 Thursday, May 17, 2007

Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date: May 17, 2007
Creator: Lewis, Shelley
Object Type: Newspaper
System: The Portal to Texas History
The Odem-Edroy Times (Odem, Tex.), Vol. 61, No. 20, Ed. 1 Thursday, May 17, 2007 (open access)

The Odem-Edroy Times (Odem, Tex.), Vol. 61, No. 20, Ed. 1 Thursday, May 17, 2007

Weekly newspaper from Odem, Texas that includes local, state, and national news along with advertising.
Date: May 17, 2007
Creator: Mogonye, Kurt R.
Object Type: Newspaper
System: The Portal to Texas History
Water, law, science (open access)

Water, law, science

In a world with water resources severely impacted bytechnology, science must actively contribute to water law. To this end,this paper is an earth scientist s attempt to comprehend essentialelements of water law, and to examine their connections to science.Science and law share a common logical framework of starting with apriori prescribed tenets, and drawing consistent inferences. In science,observationally established physical laws constitute the tenets, while inlaw, they stem from social values. The foundations of modern water law inEurope and the New World were formulated nearly two thousand years ago byRoman jurists who were inspired by Greek philosophy of reason.Recognizing that vital natural elements such as water, air, and the seawere governed by immutable natural laws, they reasoned that theseelements belonged to all humans, and therefore cannot be owned as privateproperty. Legally, such public property was to be governed by jusgentium, the law of all people or the law of all nations. In contrast,jus civile or civil law governed private property. Remarkably, jusgentium continues to be relevant in our contemporary society in whichscience plays a pivotal role in exploiting vital resources common to all.This paper examines the historical roots of modern water law, followstheir evolution through the centuries, and examines how …
Date: October 17, 2007
Creator: Narasimhan, T.N.
Object Type: Article
System: The UNT Digital Library
The Bastrop Advertiser (Bastrop, Tex.), Vol. 154, No. 23, Ed. 1 Thursday, May 17, 2007 (open access)

The Bastrop Advertiser (Bastrop, Tex.), Vol. 154, No. 23, Ed. 1 Thursday, May 17, 2007

Semi-weekly newspaper from Bastrop, Texas that includes local, state and national news along with advertising.
Date: May 17, 2007
Creator: McAuley, Davis
Object Type: Newspaper
System: The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 117, No. 20, Ed. 1 Thursday, May 17, 2007 (open access)

The Canadian Record (Canadian, Tex.), Vol. 117, No. 20, Ed. 1 Thursday, May 17, 2007

Weekly newspaper from Canadian, Texas that includes local, state and national news along with some advertising.
Date: May 17, 2007
Creator: Brown, Laurie Ezzell
Object Type: Newspaper
System: The Portal to Texas History
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, September 17, 2007 (open access)

The Express-Star (Chickasha, Okla.), Ed. 1 Monday, September 17, 2007

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: September 17, 2007
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Goldthwaite Eagle (Goldthwaite, Tex.), Vol. 113, No. 14, Ed. 1 Wednesday, October 17, 2007 (open access)

The Goldthwaite Eagle (Goldthwaite, Tex.), Vol. 113, No. 14, Ed. 1 Wednesday, October 17, 2007

Weekly newspaper from Goldthwaite, Texas that includes local, state, and national news along with extensive advertising.
Date: October 17, 2007
Creator: Bridges, Steven W.
Object Type: Newspaper
System: The Portal to Texas History
Boerne Star & Recorder (Boerne, Tex.), Vol. 101, No. 57, Ed. 1 Tuesday, July 17, 2007 (open access)

Boerne Star & Recorder (Boerne, Tex.), Vol. 101, No. 57, Ed. 1 Tuesday, July 17, 2007

Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date: July 17, 2007
Creator: Cartwright, Brian
Object Type: Newspaper
System: The Portal to Texas History