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Gelled polymer systems for permeability modification in petroleum reservoirs

Description: The research program described in this report was conducted to improve the performance and predictability of in situ gelation processes designed to increase volumetric sweep efficiency of fluid displacement processes. A principal objective of this research was to develop procedures for design and evaluation of permeability modification processes. Research was conducted in three broad areas: (1) Physical and Chemical Characterization of Gelling Systems (2) In situ Gelation and (3) Mathematical M… more
Date: September 1, 1991
Creator: Willhite, G.P.; Green, D.W.; Thiele, J.L.; McCool, C.S. & Mertes, K.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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(National Institute for Petroleum and Energy Research) monthly progress report, February 1992

Description: For this period, research is divided into Energy Production Research and Fuels Research. Energy Production Research includes reservoir characterization, microbial enhanced oil recovery, thermal EOR, alkaline flooding, gas flooding, flood process modelling, permeability and porosity research. Fuels Research included analysis of heavy crudes, and thermochemistry of organic nitrogen- and diheteroatom-containing compounds. The research of the Supplemental Government Program is also discussed.
Date: March 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Predictability of formation damage: An assessment study and generalized models

Description: The project objective is to develop improved generalized predictive models to be used for investigation of reservoir formation damage and control for various fluid and rock conditions and to account for these effects in reservoir simulation. To accomplish its objective the proposed study will first critically study and evaluate the previous modeling efforts and the experimental studies reported in the literature. Then, generalized predictive models will be formulated by combining the previous a… more
Date: January 1, 1991
Creator: Civan, F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of luminescent bacteria as tracers for geological reservoir characterization

Description: This research project resulted from recognizing the problem of being unable to accurately distinguish communication between wells in producing oil zones which may or may not be continuous. Such a determination is necessary when considering Enhanced Oil Recovery (EOR) whether it is water flooding, carbon dioxide, or other methods which increase the sweep efficiency. Various kinds of chemical tracers are available, but they are expensive and many might be considered hazardous for underground aqui… more
Date: January 1, 1991
Creator: King, J.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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(National Institute for Petroleum and Energy Research) monthly progress report for April 1992

Description: Accomplishments for this period are described briefly under tasks for: Energy Production Research; Fuels Research; and Supplemental Government Program. Energy Production Research includes: reservoir assessment and characterization; TORIS research support; development of improved alkaline flooding methods, surfactant flooding methods; mobility control and sweep improvement in chemical flooding; gas flood performance prediction improvement; mobility control, profile modification, and sweep improv… more
Date: June 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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National Institute for Petroleum and Energy Research 1990 annual report, October 1, 1989--September 30, 1990

Description: Research programs at NIPER cover a wide spectrum of specific technical tasks, all of which relate to three broad technology areas: (1) Enhanced oil recovery and all of the associated technical activities such as reservoir characterization and imaging techniques; (2) Alternative fuels evaluation and testing, including the supporting technologies of thermodynamics research and fuels characterization; (3) Environmentally technology related to production, transportation, and utilization of oil and … more
Date: May 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Microbial field pilot study

Description: The objective of this project is to perform a microbially enhanced oil recovery field pilot test in the Southeast Vassar Vertz Sand Unit in Payne County, Oklahoma. Indigenous, anaerobic, nitrate-reducing bacteria will be stimulated to selectively plug flow paths which have been preferentially swept by a prior waterflood. This will force future flood water to invade bypassed regions of the reservoir and increase sweep efficiency. 1 fig., 2 tabs.
Date: January 1, 1991
Creator: Knapp, R.M.; McInerney, M.J. & Menzie, D.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Microbial field pilot study

Description: The objective of this project is to perform a microbially enhanced oil recovery field pilot test in the Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. Indigenous, anaerobic, nitrate-reducing bacteria will be stimulated to selectively plug flow paths which have been preferentially swept by a prior waterflood. This will force future flood water to invade bypassed regions or the reservoir and increase sweep efficiency. Injection of nutrient stimulates the growth and metabolis… more
Date: January 1, 1991
Creator: Knapp, R.M.; McInerney, M.J. & Menzie, D.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Heat Extraction Project, geothermal reservoir engineering research at Stanford

Description: The main objective of the SGP Heat Extraction Project is to provide a means for estimating the thermal behavior of geothermal fluids produced from fractured hydrothermal resources. The methods are based on estimated thermal properties of the reservoir components, reservoir management planning of production and reinjection, and the mixing of reservoir fluids: geothermal, resource fluid cooled by drawdown and infiltrating groundwater, and reinjected recharge heated by sweep flow through the reser… more
Date: January 1, 1989
Creator: Kruger, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Improved Miscible Nitrogen Flood Performance Utilizing Advanced Reservoir Characterization and Horizontal Laterals in a Class I Reservoir - East Binger (Marchand) Unit

Description: The DOE-sponsored project at the East Binger Unit is an investigation into the benefits of reservoir characterization and horizontal wells in this particular setting of geologic and recovery method. The geologic setting is a tight (average porosity of 7% and average permeability of less than 1 millidarcy) Pennsylvanian-age sandstone at about 10,000 feet, and the recovery method is a miscible nitrogen flood. The projected oil recovery of the East Binger Unit, prior to the initiation of this proj… more
Date: June 30, 2004
Creator: Sinner, Joe
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Class III Mid-Term Project, "Increasing Heavy Oil Reserves in the Wilmington Oil Field Through Advanced Reservoir Characterization and Thermal Production Technologies"

Description: The overall objective of this project was to increase heavy oil reserves in slope and basin clastic (SBC) reservoirs through the application of advanced reservoir characterization and thermal production technologies. The project involved improving thermal recovery techniques in the Tar Zone of Fault Blocks II-A and V (Tar II-A and Tar V) of the Wilmington Field in Los Angeles County, near Long Beach, California. A primary objective has been to transfer technology that can be applied in other he… more
Date: March 31, 2007
Creator: Hara, Scott
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Technology on In-Situ Gas Generation to Recover Residual Oil Reserves

Description: This final technical report covers the period October 1, 1995 to February 29, 2008. This chapter begins with an overview of the history of Enhanced Oil Recovery techniques and specifically, CO2 flood. Subsequent chapters conform to the manner consistent with the Activities, Tasks, and Sub-tasks of the project as originally provided in Exhibit C1 in the Project Management Plan dated September 20, 1995. These chapters summarize the objectives, status and conclusions of the major project activitie… more
Date: February 29, 2008
Creator: Bakhtiyarov, Sayavur
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Flow Instabilities During Injection of CO2 into SalineAquifers

Description: Injection of carbon dioxide (CO{sub 2}) into saline aquifers has been proposed as a means to reduce greenhouse gas emissions (geological carbon sequestration). The injection process can be classified as immiscible displacement of an aqueous phase by a less dense and less viscous gas phase. Under disposal conditions (supercritical CO{sub 2}) the viscosity of carbon dioxide can be less than the viscosity of the aqueous phase by a factor of 15. Because of the lower viscosity, the CO{sub 2} displac… more
Date: April 15, 2003
Creator: Garcia, Julio E. & Pruess, Karsten
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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PH Sensitive Polymers for Improving Reservoir Sweep and Conformance Control in Chemical Flooring

Description: There is an increasing opportunity to recover bypassed oil from depleted, mature oilfields in the US. The recovery factor in many reservoirs is low due to inefficient displacement of the oil by injected fluids (typically water). The use of chemical flooding methods to increase recovery efficiencies is severely constrained by the inability of the injected chemicals to contact the bypassed oil. Low sweep efficiencies are the primary cause of low oil recoveries observed in the field in chemical fl… more
Date: March 31, 2008
Creator: Sharma, Mukul; Bryant, Steven & Huh, Chun
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Simulation of EOR (enhanced oil recovery) processes in stochastically generated permeable media

Description: Many enhanced oil recovery (EOR) processes involve injecting an agent, such as steam or CO{sub 2}, that is much more mobile than the resident oil. Other EOR processes attempt to improve sweep efficiency by adding polymer or surfactant to the injected water to create a favorable mobility ratio. This study examines the effect of statistically generated heterogeneity on miscible displacements at unfavorable and favorable mobility ratios. The principal goal is to delineate the effects of fingering,… more
Date: January 1, 1990
Creator: Waggoner, J. R.; Castillo, J. L. & Lake, L. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Microbial field pilot study

Description: The objective of this project is to perform a microbial enhanced oil recovery field pilot test in the Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. Indigenous, anaerobic, nitrate-reducing bacteria will be stimulated to selectively plug flow paths which have been preferentially swept by a prior waterflood. This will force future flood water to invade bypassed regions of the reservoir and increase sweep efficiency. During this quarter an additional tracer study was performe… more
Date: December 6, 1991
Creator: Knapp, R.M.; McInerney, M.J. & Menzie, D.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Improvement of CO sub 2 flood performance

Description: This is the final report of a six-year research project devoted to the study of processes of oil displacement using dense carbon dioxide. The topics studied have included phase behavior and physical properties of mixtures of crude oil with CO{sub 2}, the phenomena involved in the displacement of oil through reservoir rock under oilfield conditions, the influence of stabilized lamella or CO{sub 2}-foam on this displacement and the development of computer programs to simulate the displacement. In… more
Date: June 1, 1991
Creator: Martin, D.F. & Heller, J.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Improved CO sub 2 enhanced oil recovery -- Mobility control by in-situ chemical precipitation

Description: The overall objective of this study has been to evaluate the feasibility of chemical precipitation to improve CO{sub 2} sweep efficiency and mobility control. The laboratory experiments have indicated that carbonate precipitation can alter the permeability of the core samples under reservoir conditions. Furthermore, the relative permeability measurements have revealed that precipitation reduces the gas permeability in favor of liquid permeability. This indicates that precipitation is occurring … more
Date: June 1, 1991
Creator: Ameri, S.; Aminian, K.; Wasson, J. A. & Durham, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Microbial field pilot study

Description: A multi-well microbially enhanced oil recovery field pilot has been performed in the Southeast Vassar Vertz Sand Unit in Payne County, Oklahoma. The primary emphasis of the experiment was preferential plugging of high permeability zones for the purpose of improving waterflood sweep efficiency. Studies were performed to determine reservoir chemistry, ecology, and indigenous bacteria populations. Growth experiments were used to select a nutrient system compatible with the reservoir that encourage… more
Date: May 1, 1993
Creator: Knapp, R.M.; McInerney, M.J.; Menzie, D.E.; Coates, J.D. & Chisholm, J.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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National Institute for Petroleum and Energy Research quarterly technical report, January 1--March 31, 1993

Description: Accomplishments for the past quarter are briefly described for the following tasks: chemical flooding -- supporting research; gas displacement -- supporting research; thermal recovery -- supporting research; geoscience technology; resource assessment technology; and microbial technology. Chemical flooding covers: surfactant flooding methods; development of improved alkaline flooding methods; mobility control and sweep improvement in chemical flooding; and surfactant-enhanced alkaline flooding f… more
Date: June 1, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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FY 91 Annual Research Plan

Description: In line with the Federal Oil Research Program to maximize the economic producibility of the domestic oil resource, the National Institute for Petroleum and Energy Research (NIPER) presents this FY91 Annual Research Plan. NIPER is organized into two research departments -- Energy Production Research (EPR) and Fuels Research (FR). Projects in EPR deal with various aspects of enhanced oil recovery and include reservoir characterization, chemical flooding, gas injection, steam injection, microbial … more
Date: December 1, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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National Institute for Petroleum and Energy Research monthly progress report, May 1993

Description: Accomplishments for the month of May are described briefly under tasks for: Energy Production Research; Fuels Research; and Supplemental Government Program. Energy Production Research includes: reservoir assessment and characterization; TORIS research support; development of improved microbial flooding methods; development of improved chemical flooding methods; development of improved alkaline flooding methods; mobility control and sweep improvement in chemical flooding; gas flood performance p… more
Date: June 1, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Microbial field pilot study. [Quarterly report], July 1, 1992--September 30, 1992

Description: The objective of this project is to perform a microbial enhanced oil recovery field pilot test in the Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. Indigenous, anaerobic, nitrate-reducing bacteria will be stimulated to selectively plug flow paths which have been preferentially swept by a prior waterflood. This will force future flood water to invade bypassed regions of the reservoir and increase sweep efficiency. During this quarter an additional tracer study was performe… more
Date: December 6, 1991
Creator: Knapp, R. M.; McInerney, M. J. & Menzie, D. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of Advanced Drilling, Completion, and Stimulation Systems for Minimum Formation Damage and Improved Efficiency: A Program Overview

Description: The Department of Energy`s (DOE) Natural Gas Resource and Extraction Program consists of industry/government co-sponsored research, development, and demonstration (RD&D) projects, which focus on gas recovery from both conventional and nonconventional resources. The Drilling, Completion, and Stimulation (DCS) Project focuses on advanced, non-damaging technology systems and equipment for improving gas recovery from conventional and nonconventional reservoirs. As operators move from development of… more
Date: July 1, 1994
Creator: Layne, A. W. & Yost, A. B., II
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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