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Mechanistic Studies of Improved Foam EOR Processes

Description: The objective of this research is to widen the application of foam to enhanced oil recovery (EOR) by investigating fundamental mechanisms of foams in porous media. This research is to lay the groundwork for more-applied research on foams for improved sweep efficiency in miscible gas, steam and surfactant-based EOR. Task 1 investigates the pore-scale interactions between foam bubbles and polymer molecules. Task 2 examines the mechanisms of gas trapping, and interaction between gas trapping and f… more
Date: March 16, 2005
Creator: Rossen, William R.
Partner: UNT Libraries Government Documents Department
open access

Development of More-Efficient Gas Flooding Applicable to Shallow Reservoirs: Final Report

Description: The objective of this research is to widen the applicability of gas flooding to shallow oil reservoirs by reducing the pressure required for miscibility using gas enrichment and increasing sweep efficiency with foam. Task 1 examines the potential for improved oil recovery with enriched gases. Subtask 1.1 examines the effect of dispersion processes on oil recovery and the extent of enrichment needed in the presence of dispersion. Subtask 1.2 develops a fast, efficient method to predict the exten… more
Date: August 21, 2003
Creator: Rossen, William R.; Johns, Russell T. & Pope, Gary A.
Partner: UNT Libraries Government Documents Department
open access

Mechanistic Studies of Improved Foam EOR Processes

Description: The objective of this research is to widen the application of foam to enhanced oil recovery (EOR) by investigating fundamental mechanisms of foams in porous media. This research will lay the groundwork for more applied research on foams for improved sweep efficiency in miscible gas, steam and surfactant-based EOR. Task 1 investigates the pore-scale interactions between foam bubbles and polymer molecules. Task 2 examines the mechanisms of gas trapping, and interaction between gas trapping and fo… more
Date: January 5, 2005
Creator: Rossen, William R.
Partner: UNT Libraries Government Documents Department
open access

Improved Miscible Nitrogen Flood Performance Utilizing Advanced Reservoir Characterization and Horizontal Laterals in a Class I Reservoir - East Binger (Marchand) Unit

Description: The reservoir characterization and investigation of the benefits of horizontal wells in the East Binger Unit miscible nitrogen flood as been completed. A significant work program was implemented from 2002 to 2005 in an effort to reduce gas cycling and economically increase ultimate oil recovery. Horizontal and vertical infill wells were drilled and existing producers were converted to injection. Due to successful infill drilling based on the improved flow characterization, more drilling was don… more
Date: June 30, 2006
Creator: Sinner, Joe
Partner: UNT Libraries Government Documents Department
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Augmenting a Microbial Selective Plugging Technique with Polymer Flooding to Increase the Efficiency of Oil Recovery - A Search for Synergy

Description: The overall objective of this project was to improve the effectiveness of a microbial selective plugging technique of improving oil recovery through the use of polymer floods. More specifically, the intent was to increase the total amount of oil recovered and to reduce the cost per barrel of incremental oil.
Date: February 10, 2003
Creator: Brown, Lewis R.; Pittman Jr., Charles U.; Lynch, Leo F. & Vadie, Alex A.
Partner: UNT Libraries Government Documents Department
open access

Augmenting a Microbial Selective Plugging Technique with Polymer Flooding to Increase the Efficiency of Oil Recovery - A Search for Synergy

Description: The overall objective of this project was to improve the effectiveness of a microbial selective plugging technique of improving oil recovery through the use of polymer floods. More specifically, the intent was to increase the total amount of oil recovered and to reduce the cost per barrel of incremental oil.
Date: February 10, 2003
Creator: Brown, Lewis R.; Vadie, Alex A.; Pittman Jr., Charles U. & Lynch, Leo F.
Partner: UNT Libraries Government Documents Department
open access

Augmenting a Microbial Selective Plugging Technique with Polymer Flooding to Increase the Efficiency of Oil Recovery - A Search for Synergy

Description: The overall objective of this project was to improve the effectiveness of a microbial selective plugging technique of improving oil recovery through the use of polymer floods. More specifically, the intent was to increase the total amount of oil recovered and to reduce the cost per barrel of incremental oil.
Date: February 10, 2003
Creator: Brown, Lewis R.; Pittman Jr., Charles & Lynch, F. Leo
Partner: UNT Libraries Government Documents Department
open access

Development of More-Efficient Gas Flooding Applicable to Shallow Reservoirs Progress Report

Description: The objective of this research is to widen the applicability of gas flooding to shallow oil reservoirs by reducing the pressure required for miscibility using gas enrichment and increasing sweep efficiency with foam. Task 1 examines the potential for improved oil recovery with enriched gases. Subtask 1.1 examines the effect of dispersion processes on oil recovery and the extent of enrichment needed in the presence of dispersion. Subtask 1.2 develops a fast, efficient method to predict the exten… more
Date: January 28, 2003
Creator: Rossen, William R.; Johns, Russell T. & Pope, Gary A.
Partner: UNT Libraries Government Documents Department
open access

An Integrated Approach to Characterizing Bypassed Oil in Heterogeneous and Fractured Reservoirs Using Partitioning Tracers

Description: We explore the use of efficient streamline-based simulation approaches for modeling partitioning interwell tracer tests in hydrocarbon reservoirs. Specifically, we utilize the unique features of streamline models to develop an efficient approach for interpretation and history matching of field tracer response. A critical aspect here is the underdetermined and highly ill-posed nature of the associated inverse problems. We have investigated the relative merits of the traditional history matching … more
Date: December 31, 2006
Creator: Datta-Gupta, Akhil
Partner: UNT Libraries Government Documents Department
open access

Augmenting a Microbial Selective Plugging Technique with Polymer Flooding to Increase the Efficiency of Oil Recovery - A Search for Synergy

Description: The objective of this project was to determine if the effectiveness of a microbial permeability profile modification technique can be improved through polymer flooding.
Date: February 10, 2003
Creator: Brown, Lewis R.; Pittman Jr., Charles U.; Lynch, Leo F.; Vadie, Alex A. & French, Todd W.
Partner: UNT Libraries Government Documents Department
open access

Development of More-Efficient Gas Flooding Applicable to Shallow Reservoirs Progress Report

Description: The objective of this research is to widen the applicability of gas flooding to shallow oil reservoirs by reducing the pressure required for miscibility using gas enrichment and increasing sweep efficiency with foam. Task 1 examines the potential for improved oil recovery with enriched gases. Subtask 1.1 examines the effect of dispersion processes on oil recovery and the extent of enrichment needed in the presence of dispersion. Subtask 1.2 develops a fast, efficient method to predict the exten… more
Date: January 28, 2003
Creator: Rossen, William R.; Johns, Russell T. & Pope, Gary A.
Partner: UNT Libraries Government Documents Department
open access

Mechanistic Studies of Improved Foam EOR Processes

Description: The objective of this research is to widen the application of foam to enhanced oil recovery (EOR) by investigating fundamental mechanisms of foams in porous media. This research will lay the groundwork for more applied research on foams for improved sweep efficiency in miscible gas, steam and surfactant-based EOR. Task 1 investigates the pore-scale interactions between foam bubbles and polymer molecules. Task 2 examines the mechanisms of gas trapping, and interaction between gas trapping and fo… more
Date: March 31, 2003
Creator: Rossen, William R.
Partner: UNT Libraries Government Documents Department
open access

Additional Reserve Recovery Using New Polymer Treatment on High Water Oil Ratio Wells in Alameda Field, Kingman County, Kansas

Description: The Chemical Flooding process, like a polymer treatment, as a tertiary (enhanced) oil recovery process can be a very good solution based on the condition of this field and its low cost compared to the drilling of new wells. It is an improved water flooding method in which high molecular-weight (macro-size molecules) and water-soluble polymers are added to the injection water to improve the mobility ratio by enhancing the viscosity of the water and by reducing permeability in invaded zones durin… more
Date: October 1, 2005
Creator: Spillane, James
Partner: UNT Libraries Government Documents Department
open access

A Study of the Effect of Mobility Ratios on Pattern Displacement Behavior and Steamlines to Infer Permeability Media, SUPRI TR-115

Description: Pattern geometry plays a major role in determining oil recovery during secondary and enhanced oil recovery operations. Although simulation is an important tool for design and evaluation, the first step often involves rough calculations based upon areal sweep efficiencies of displacements in homogeneous, two-dimensional, scaled, physical models. These results are available as a function of the displacement pattern and the mobility ratio, M. The mobility ratio is simply the mobility of the displa… more
Date: August 9, 1999
Creator: Brigham, William E.; Kovscek, Anthony R. & Wang, Yuandong
Partner: UNT Libraries Government Documents Department
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Anisotropy and spatial variation of relative permeability and lithologic character of Tensleep Sandstone reservoirs in the Bighorn and Wind River Basins, Wyoming. Second quarterly, second year, technical progress report, January 1, 1995--March 31, 1995

Description: This study is designed to provide improvements in reservoir characterization techniques. Activities include: an examination of the spatial variation and anisotropy of relative permeability in the Tensleep Sandstone reservoirs of Wyoming; the placement of that variation and anisotropy into paleogeographic, depositional and diagenic frameworks; the development of pore system imagery techniques for the calculation of relative permeability; and reservoir simulations testing the impact of permeabili… more
Date: April 13, 1995
Creator: Dunn, T. L.
Partner: UNT Libraries Government Documents Department
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Improved oil recovery in fluvial dominated deltaic reservoirs of Kansas -- near-term. Eighth quarterly report, April 1, 1995--June 30, 1995

Description: The objective of this project is to address waterflood problems of the type found in Cherokee Group reservoirs in southeastern Kansas and in Morrow sandstone reservoirs in southwestern Kansas. Two demonstration sites operated by different independent oil operators are involved in the project. The Nelson Lease (an existing waterflood) is located in Allen County, Kansas in the N.E. Savonburg Field and is operated by James E. Russell Petroleum, Inc. The Stewart Field (on latter stage of primary pr… more
Date: July 15, 1995
Creator: Green, D.W.; Willhite, G.P.; Walton, A.; Schoeling, L.; Reynolds, R.; Michnick, M. et al.
Partner: UNT Libraries Government Documents Department
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A Numerical Analysis of the Single-Well Steam Assisted Gravity Drainage (SW-SAGD) Process, SUPRI TR-124

Description: Results from this study include cumulative recoveries, temperature distributions, and production rates. It was found that cyclic steaming of the reservoir offers the most favorable option for heating the near-wellbore area to create conditions that improve initial SAGD response. More favorable reservoir conditions such as low viscosity, thick oil zones, and solution gas, improved reservoir response. Under unfavorable conditions, response was limited.
Date: July 23, 2001
Creator: Elliot, K. T. & Kovscek, A. R.
Partner: UNT Libraries Government Documents Department
open access

Surfactant-polymer interaction for improved oil recovery. Semi-annual report, September 1, 1996--March 1, 1997

Description: The goal of the proposed research is to use the interaction between a surfactant and a polymer for efficient displacement of tertiary oil by improving slug integrity, adsorption and mobility control. The focus of this proposal is to design an inexpensive surfactant-polymer mixture that can efficiently recover tertiary oil by avoiding surfactant slug degradation, high adsorption and viscous/heterogeneity fingering. The strategy of the proposed research is to use a scaled physical areal model to … more
Date: December 31, 1997
Partner: UNT Libraries Government Documents Department
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The Utilization of the Microflora Indigenous to and Present in Oil-Bearing Formations to Selectively Plug the More Porous Zones Thereby Increasing Oil Recovery During Waterflooding

Description: The objective of this work is to demonstrate the use of indigenous microbes as a method of profile control in waterfloods. It is expected that as the microbial population is induced to increase, that the expanded biomass will selectively block the more permeable zones of the reservoir thereby forcing injection water to flow through the less permeable zones which will result in improved sweep efficiency. This increase in microbial population will be accomplished by injecting a nutrient solution … more
Date: October 20, 1996
Creator: Brown, Lewis R. & Vadie, Alex A.
Partner: UNT Libraries Government Documents Department
open access

SURFACTANT - POLYMER INTERACTION FOR IMPROVED OIL RECOVERY

Description: The goal of this research is to use the interaction between a surfactant and a polymer for efficient displacement of tertiary oil by improving slug integrity, adsorption and mobility control. Surfactant--polymer flooding has been shown to be highly effective in laboratory-scale linear floods. The focus of this proposal is to design an inexpensive surfactant-polymer mixture that can efficiently recover tertiary oil by avoiding surfactant slug degradation high adsorption and viscous/heterogeneity… more
Date: October 1, 1998
Partner: UNT Libraries Government Documents Department
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SURFACTANT BASED ENHANCED OIL RECOVERY AND FOAM MOBILITY CONTROL

Description: Surfactant flooding has the potential to significantly increase recovery over that of conventional waterflooding. The availability of a large number of surfactants makes it possible to conduct a systematic study of the relation between surfactant structure and its efficacy for oil recovery. Also, the addition of an alkali such as sodium carbonate makes possible in situ generation of surfactant and significant reduction of surfactant adsorption. In addition to reduction of interfacial tension to… more
Date: July 1, 2004
Creator: Hirasaki, George J.; Miller, Clarence A.; Pope, Gary A. & Jackson, Richard E.
Partner: UNT Libraries Government Documents Department
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Stimuli-Responsive Polymers with Enhanced Efficiency in Reservoir Recovery Processes

Description: This sixth and final progress report for DOE Award Number DE-FC26-01BC15317 describes research during the period March 01, 2004 through August 31, 2004 performed at the University of Southern Mississippi on ''Stimuli Responsive Polymers with Enhanced Efficiency in Reservoir Recovery'' processes. Significantly, terpolymers that are responsive to changes in pH and ionic strength have been synthesized, characterized, and their solution properties have been extensively examined. Terpolymers compose… more
Date: September 30, 2004
Creator: McCormick, Charles & Hester, Roger
Partner: UNT Libraries Government Documents Department
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Development of Shallow Viscous Oil Reserves in North Slope: Final Report

Description: North Slope of Alaska has huge oil deposits in heavy oil reservoirs such as Ugnu, West Sak and Shrader Bluff etc. The viscosity of the last two reservoir oils vary from {approx}30 cp to {approx}3000 cp and the amount in the range of 10-20 billion barrels. High oil viscosity and low formation strength impose problems to high recovery and well productivity. Water-alternate-gas injection processes can be effective for the lower viscosity end of these deposits in West Sak and Shrader Bluff. Several… more
Date: December 1, 2004
Creator: Mohanty, Kishore K.
Partner: UNT Libraries Government Documents Department
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Application of Integrated Reservoir Management and Reservoir Characterization

Description: Reservoir performance and characterization are vital parameters during the development phase of a project. Infill drilling of wells on a uniform spacing, without regard to characterization does not optimize development because it fails to account for the complex nature of reservoir heterogeneities present in many low permeability reservoirs, especially carbonate reservoirs. These reservoirs are typically characterized by: (1) large, discontinuous pay intervals; (2) vertical and lateral changes … more
Date: March 1, 2000
Creator: Bergeron, Jack; Blasingame, Tom; Doublet, Louis; Kelkar, Mohan; Freeman, George; Callard, Jeff et al.
Partner: UNT Libraries Government Documents Department
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