Surfactant-enhanced alkaline flooding field project (open access)

Surfactant-enhanced alkaline flooding field project

The Tucker sand of Helper (KS) field is a candidate for surfactant-enhanced alkaline flooding. The geology of the Helper site is typical of many DOE Class I reservoirs. The Tucker sand of Helper field was deposited in a fluvial dominated deltaic environment. Helper oil can be mobilized with either chemical system 2 or chemical system 3, as described in this report. Oil fields in the Gulf Coast region are also good candidates for surfactant-enhanced alkaline flooding. The results from laboratory tests conducted in Berea sandstone cores with oil brine from Helper (KS) field are encouraging. The crude oil is viscous and non-acidic and, yet, was mobilized by the chemical formulations described in this report. Significant amounts of the oil were mobilized under simulated reservoir conditions. The results in Berea sandstone cores were encouraging and should be verified by tests with field core. Consumption of alkali, measured with field core, was very low. Surfactant loss appeared to be acceptable. Despite the good potential for mobilization of Helper oil, certain reservoir characteristics such as low permeability, compartmentalization, and shallow depth place constraints on applications of any chemical system in the Tucker sand. These constraints are typical of many DOE Class I reservoirs. …
Date: October 1, 1991
Creator: French, T. R.
Object Type: Report
System: The UNT Digital Library
University of Minnesota Aquifer Thermal Energy Storage (ATES) project report on the first long-term cycle (open access)

University of Minnesota Aquifer Thermal Energy Storage (ATES) project report on the first long-term cycle

The technical feasibility of high-temperature (>100{degrees}C) aquifer thermal energy storage (IOTAS) in a deep, confined aquifer was tested in a series of experimental cycles at the University of Minnesota`s St. Paul field test facility (FTF). This report describes the additions to the FTF for the long-term cycles and the details of the first long-term cycle (LT1) that was conducted from November 1984 through May 1985. Heat recovery; operational experience; and thermal, chemical, hydrologic, and geologic aspects of LT1 are reported. The permits for long-term cycles required the addition of a monitoring well 30.5 m from the storage well for monitoring near the edge of the thermally affected area and allowed the addition of a cation-exchange water softener to enable continuous operation during the injection phase. Approximately 62% of the 9.47 GWh of energy added to the 9.21 {times} 10{sup 4} m{sup 3} of ground water stored in the aquifer LT1 was recovered. Ion-exchange water softening of the heated and stored ground water prevented scaling in the system heat exchangers and the storage well and changed the major-ion chemistry of the stored water. Temperatures at the storage horizons in site monitoring wells reached as high as 108{degrees}C during the injection phase …
Date: October 1, 1991
Creator: Walton, M.
Object Type: Report
System: The UNT Digital Library
Surfactant-enhanced alkaline flooding field project. Annual report, Revision (open access)

Surfactant-enhanced alkaline flooding field project. Annual report, Revision

The Tucker sand of Helper (KS) field is a candidate for surfactant-enhanced alkaline flooding. The geology of the Helper site is typical of many DOE Class I reservoirs. The Tucker sand of Helper field was deposited in a fluvial dominated deltaic environment. Helper oil can be mobilized with either chemical system 2 or chemical system 3, as described in this report. Oil fields in the Gulf Coast region are also good candidates for surfactant-enhanced alkaline flooding. The results from laboratory tests conducted in Berea sandstone cores with oil brine from Helper (KS) field are encouraging. The crude oil is viscous and non-acidic and, yet, was mobilized by the chemical formulations described in this report. Significant amounts of the oil were mobilized under simulated reservoir conditions. The results in Berea sandstone cores were encouraging and should be verified by tests with field core. Consumption of alkali, measured with field core, was very low. Surfactant loss appeared to be acceptable. Despite the good potential for mobilization of Helper oil, certain reservoir characteristics such as low permeability, compartmentalization, and shallow depth place constraints on applications of any chemical system in the Tucker sand. These constraints are typical of many DOE Class I reservoirs. …
Date: October 1, 1991
Creator: French, T. R.
Object Type: Report
System: The UNT Digital Library
University of Minnesota Aquifer Thermal Energy Storage (ATES) project report on the first long-term cycle (open access)

University of Minnesota Aquifer Thermal Energy Storage (ATES) project report on the first long-term cycle

The technical feasibility of high-temperature (>100{degrees}C) aquifer thermal energy storage (IOTAS) in a deep, confined aquifer was tested in a series of experimental cycles at the University of Minnesota's St. Paul field test facility (FTF). This report describes the additions to the FTF for the long-term cycles and the details of the first long-term cycle (LT1) that was conducted from November 1984 through May 1985. Heat recovery; operational experience; and thermal, chemical, hydrologic, and geologic aspects of LT1 are reported. The permits for long-term cycles required the addition of a monitoring well 30.5 m from the storage well for monitoring near the edge of the thermally affected area and allowed the addition of a cation-exchange water softener to enable continuous operation during the injection phase. Approximately 62% of the 9.47 GWh of energy added to the 9.21 {times} 10{sup 4} m{sup 3} of ground water stored in the aquifer LT1 was recovered. Ion-exchange water softening of the heated and stored ground water prevented scaling in the system heat exchangers and the storage well and changed the major-ion chemistry of the stored water. Temperatures at the storage horizons in site monitoring wells reached as high as 108{degrees}C during the injection phase …
Date: October 1, 1991
Creator: Walton, M. (Minnesota Geological Survey, St. Paul, MN (United States))
Object Type: Report
System: The UNT Digital Library
Heavy oil recovery process: Conceptual engineering of a downhole methanator and preliminary estimate of facilities cost for application to North Slope Alaska (open access)

Heavy oil recovery process: Conceptual engineering of a downhole methanator and preliminary estimate of facilities cost for application to North Slope Alaska

The West Sak (Upper Cretaceous) sands, overlaying the Kuparuk field, would rank among the largest known oil fields in the US, but technical difficulties have so far prevented its commercial exploitation. Steam injection is the most successful and the most commonly-used method of heavy oil recovery, but its application to the West Sak presents major problems. Such difficulties may be overcome by using a novel approach, in which steam is generated downhole in a catalytic Methanator, from Syngas made at the surface from endothermic reactions (Table 1). The Methanator effluent, containing steam and soluble gases resulting from exothermic reactions (Table 1), is cyclically injected into the reservoir by means of a horizontal drainhole while hot produced fluids flow form a second drainhole into a central production tubing. The downhole reactor feed and BFW flow downward to two concentric tubings. The large-diameter casing required to house the downhole reactor assembly is filled above it with Arctic Pack mud, or crude oil, to further reduce heat leaks. A quantitative analysis of this production scheme for the West Sak required a preliminary engineering of the downhole and surface facilities and a tentative forecast of well production rates. The results, based on published information …
Date: October 31, 1991
Creator: Gondouin, M.
Object Type: Report
System: The UNT Digital Library
Calendar years 1989 and 1990 monitoring well installation program Y-12 plant, Oak Ridge, Tennessee (open access)

Calendar years 1989 and 1990 monitoring well installation program Y-12 plant, Oak Ridge, Tennessee

This report documents the well-construction activities at the Y-12 Plant in Oak Ridge, Tennessee during 1989 and 1990. The well- construction program consisted of installing seventy-five monitoring wells. Geologists from ERCE (formally the Engineering, Design and Geosciences Group) and Martin Marietta Energy Systems (Energy Systems), supervised and documented well-construction activities and monitored for health and safety concerns. Sixty-seven monitoring wells were installed under the supervision of an ERCE geologist from March 1989 to September 1990. Beginning in September 1990, Energy Systems supervised drilling activities for eight monitoring wells, the last of which was completed in December 1990. 9 refs., 3 figs., 2 tabs.
Date: October 1, 1991
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Slipstream, Volume 29, Number 10, October 1991 (open access)

Slipstream, Volume 29, Number 10, October 1991

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.
Date: October 1991
Creator: Porsche Club of America. Maverick Region.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
The Grass Burr (Weatherford, Tex.), Vol. 71, No. 2, Ed. 1 Thursday, October 31, 1991 (open access)

The Grass Burr (Weatherford, Tex.), Vol. 71, No. 2, Ed. 1 Thursday, October 31, 1991

Student newspaper of Weatherford High School in Weatherford, Texas that includes school news and information along with advertising.
Date: October 31, 1991
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Sanger Courier (Sanger, Tex.), Vol. 92, No. 41, Ed. 1 Thursday, October 10, 1991 (open access)

Sanger Courier (Sanger, Tex.), Vol. 92, No. 41, Ed. 1 Thursday, October 10, 1991

Weekly newspaper from Sanger, Texas that includes local, state, and national news along with extensive advertising.
Date: October 10, 1991
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Texas Parks & Wildlife News, October 4, 1991 (open access)

Texas Parks & Wildlife News, October 4, 1991

Weekly newsletter discussing natural resources, parks, hunting and fishing, and other information related to the outdoors in Texas.
Date: October 4, 1991
Creator: Texas. Parks and Wildlife Department.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 85, No. 37, Ed. 1 Wednesday, October 30, 1991 (open access)

The Paducah Post (Paducah, Tex.), Vol. 85, No. 37, Ed. 1 Wednesday, October 30, 1991

Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date: October 30, 1991
Creator: Taylor, Jimmye C.
Object Type: Newspaper
System: The Portal to Texas History
The J-TAC (Stephenville, Tex.), Ed. 1 Thursday, October 24, 1991 (open access)

The J-TAC (Stephenville, Tex.), Ed. 1 Thursday, October 24, 1991

Weekly student newspaper from Tarleton State University in Stephenville, Texas that includes local, state and campus news along with advertising.
Date: October 24, 1991
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Stamford American (Stamford, Tex.), Vol. 70, No. 29, Ed. 1 Thursday, October 17, 1991 (open access)

Stamford American (Stamford, Tex.), Vol. 70, No. 29, Ed. 1 Thursday, October 17, 1991

Weekly newspaper from Stamford, Texas that includes local, state, and national news along with advertising.
Date: October 17, 1991
Creator: Mathis, Chandra
Object Type: Newspaper
System: The Portal to Texas History
The J-TAC (Stephenville, Tex.), Ed. 1 Thursday, October 3, 1991 (open access)

The J-TAC (Stephenville, Tex.), Ed. 1 Thursday, October 3, 1991

Weekly student newspaper from Tarleton State University in Stephenville, Texas that includes local, state and campus news along with advertising.
Date: October 3, 1991
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Hopkins County Echo (Sulphur Springs, Tex.), Vol. 116, No. 43, Ed. 1 Friday, October 25, 1991 (open access)

The Hopkins County Echo (Sulphur Springs, Tex.), Vol. 116, No. 43, Ed. 1 Friday, October 25, 1991

Weekly newspaper from Sulphur Springs, Texas that includes local, state, and national news along with advertising.
Date: October 25, 1991
Creator: Keys, Clarke & Davis, Mary Grant
Object Type: Newspaper
System: The Portal to Texas History
The J-TAC (Stephenville, Tex.), Ed. 1 Thursday, October 31, 1991 (open access)

The J-TAC (Stephenville, Tex.), Ed. 1 Thursday, October 31, 1991

Weekly student newspaper from Tarleton State University in Stephenville, Texas that includes local, state and campus news along with advertising.
Date: October 31, 1991
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 85, No. 36, Ed. 1 Wednesday, October 23, 1991 (open access)

The Paducah Post (Paducah, Tex.), Vol. 85, No. 36, Ed. 1 Wednesday, October 23, 1991

Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date: October 23, 1991
Creator: Taylor, Jimmye C.
Object Type: Newspaper
System: The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 116, No. 17, Ed. 1 Thursday, October 3, 1991 (open access)

The Albany News (Albany, Tex.), Vol. 116, No. 17, Ed. 1 Thursday, October 3, 1991

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date: October 3, 1991
Creator: Lucas, Donnie A.
Object Type: Newspaper
System: The Portal to Texas History
Stamford American (Stamford, Tex.), Vol. 70, No. 31, Ed. 1 Thursday, October 31, 1991 (open access)

Stamford American (Stamford, Tex.), Vol. 70, No. 31, Ed. 1 Thursday, October 31, 1991

Weekly newspaper from Stamford, Texas that includes local, state, and national news along with advertising.
Date: October 31, 1991
Creator: Mathis, Chandra
Object Type: Newspaper
System: The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 85, No. 33, Ed. 1 Wednesday, October 2, 1991 (open access)

The Paducah Post (Paducah, Tex.), Vol. 85, No. 33, Ed. 1 Wednesday, October 2, 1991

Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date: October 2, 1991
Creator: Taylor, Jimmye C.
Object Type: Newspaper
System: The Portal to Texas History
The Olney Enterprise (Olney, Tex.), Vol. 82, No. 40, Ed. 1 Thursday, October 3, 1991 (open access)

The Olney Enterprise (Olney, Tex.), Vol. 82, No. 40, Ed. 1 Thursday, October 3, 1991

Weekly newspaper from Olney, Texas that includes local, state, and national news along with advertising.
Date: October 3, 1991
Creator: Penn, David H.
Object Type: Newspaper
System: The Portal to Texas History
The Comanche Chief (Comanche, Tex.), Vol. 119, No. 23, Ed. 1 Thursday, October 24, 1991 (open access)

The Comanche Chief (Comanche, Tex.), Vol. 119, No. 23, Ed. 1 Thursday, October 24, 1991

Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date: October 24, 1991
Creator: Wilkerson, James C., III
Object Type: Newspaper
System: The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 85, No. 34, Ed. 1 Wednesday, October 9, 1991 (open access)

The Paducah Post (Paducah, Tex.), Vol. 85, No. 34, Ed. 1 Wednesday, October 9, 1991

Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date: October 9, 1991
Creator: Taylor, Jimmye C.
Object Type: Newspaper
System: The Portal to Texas History
The Olney Enterprise (Olney, Tex.), Vol. 82, No. 43, Ed. 1 Thursday, October 24, 1991 (open access)

The Olney Enterprise (Olney, Tex.), Vol. 82, No. 43, Ed. 1 Thursday, October 24, 1991

Weekly newspaper from Olney, Texas that includes local, state, and national news along with advertising.
Date: October 24, 1991
Creator: Penn, David H.
Object Type: Newspaper
System: The Portal to Texas History