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An integrated study of the Grayburg/San Andres reservoir, Foster and south Cowden fields, Ector County, Texas. Quarterly report, January 1--March 31, 1996

Description: The principal objective of this research is to demonstrate in the field that 3D seismic data can be used to aid in identifying porosity zones, permeability barriers and thief zones and thereby improve waterflood design. Geologic and engineering data will be integrated with the geophysical data to result in a detailed reservoir characterization. Reservoir simulation will then be used to determine infill drilling potential and the optimum waterflood design for the project area. This design will be implemented and the success of the waterflood evaluated.
Date: June 17, 1996
Creator: Trentham, R.C.; Weinbrandt, R. & Reeves, J.J.
Partner: UNT Libraries Government Documents Department

Application of integrated reservoir management and reservoir characterization to optimize infill drilling. Quarterly technical progress report, September 13--December 12, 1996

Description: Eighteen 10-acre infill wells have been drilled and completed as part of the Field Demonstration phase of the project at the North Robertson (Clearfork) Unit (NRU). The fourteen producing wells are pumped-off and producing at stable rates. The four injection wells are completed and have been on injection for three to four weeks. Current Unit production is approximately 3,400 STBO/D, of which approximately 900 STBO/D is being produced from the 10-acre infill wells. A change in the Statement of Work has been approved so that additional 10-acre infill wells can be drilled and/or 20-acre producing wells can be converted to injection during the next quarter as budget constraints and rig availability allow. Technical progress is described for the quarter in many related areas: implementation of the field demonstration; reservoir characterization; reservoir management activities and performance analysis; reservoir simulation; and technology transfer.
Date: December 12, 1996
Partner: UNT Libraries Government Documents Department

Application of integrated reservoir management and reservoir characterization to optimize infill drilling. Annual report, June 13, 1994--June 12, 1995

Description: This project has used a multi-disciplinary approach employing geology, geophysics, and engineering to conduct advanced reservoir characterization and management activities to design and implement an optimized infill drilling program at the North Robertson (Clearfork) Unit in Gaines County, Texas. The activities during the first Budget Period have consisted of developing an integrated reservoir description from geological, engineering, and geostatistical studies, and using this description for reservoir flow simulation. Specific reservoir management activities are being identified and tested. The geologically targeted infill drilling program will be implemented using the results of this work. A significant contribution of this project is to demonstrate the use of cost-effective reservoir characterization and management tools that will be helpful to both independent and major operators for the optimal development of heterogeneous, low permeability shallow-shelf carbonate (SSC) reservoirs. The techniques that are outlined for the formulation of an integrated reservoir description apply to all oil and gas reservoirs, but are specifically tailored for use in the heterogeneous, low permeability carbonate reservoirs of West Texas.
Date: November 1, 1996
Creator: Pande, P.K.
Partner: UNT Libraries Government Documents Department

Increased oil production and reserves utilizing secondary/teritiary recovery techniques on small reservoirs in the Paradox Basin, Utah. Quarterly report, July 1 - September 30, 1996

Description: The primary objective of this project is to enhance domestic petroleum production by demonstration and technology transfer of an advanced oil recovery technology in the Paradox basin, southeastern Utah. If this project can demonstrate technical and economic feasibility, the technique can be applied to approximately 100 additional small fields in the Paradox basin alone, and result in increased recovery of 150 to 200 million barrels of oil. This project is designed to characterize five shallow-shelf carbonate reservoirs in the Pennsylvanian (Desmoinesian) Paradox Formation and choose the best candidate for a pilot demonstration project for either a waterflood or carbon dioxide flood project. The field demonstration, monitoring of field performance, and associated validation activities will take place in the Paradox basin within the Navajo Nation. The results of this project will be transferred to industry and other researchers through a petroleum extension service, creation of digital databases for distribution, technical workshops and seminars, field trips, technical presentations at national and regional professional meeting, and publication in newsletters and various technical or trade journals. Four activities continued this quarter as part of the geological and reservoir characterization: (1) interpretation of outcrop analogues; (2) reservoir mapping, (3) reservoir engineering analysis of the five project fields; and (4) technology transfer.
Date: October 1, 1996
Creator: Allison, M.L.
Partner: UNT Libraries Government Documents Department

Developing the R&D 100 award-winning lattice Boltzmann permeameter toward a marketable product

Description: This is the final report of a one-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). Computational models of oil, gas, and water flow through porous reservoir rock are used in reservoir management to decide whether or not, and how, to develop and produce hydrocarbon reserves. The flow models have major impact on these decisions so their accuracy, cost, and speed is paramount. The accuracy of the flow models is strongly dependent on the accuracy of the physical characterization of the reservoir rock`s pore-fluid system. System characterization is typically done in the laboratory. As an alternative, we have developed a numerical approach for determining the constitutive information. The project sought to use computational techniques that could incorporate all of the basic physical processes that influence fluid movement through the porous rock yet remain computationally efficient. The lattice Boltzmann (LB) numerical technique fits these requirements, and is able to incorporate complex pore geometries exactly and reproduce behavior of multiple fluids. The flexibility of the LB approach allows the numerical model, called the lattice Boltzmann Permeameter (LBP), to determine constitutive relationships (i.e., relative permeabilities) over a much wider range of conditions than can be achieved in a laboratory. Our project was directed toward improving the LBP to make it available to a wide range of users. Improvements were made in computational speed and efficiency, user interfaces, and visualization capabilities.
Date: November 1, 1996
Creator: Soll, W.E.; Chen, Shi-Yi; Doolen, G.D. & Eggert, K.G.
Partner: UNT Libraries Government Documents Department

Advanced reservoir characterization in the Antelope Shale to establish the viability of CO{sub 2} enhanced oil recovery in California`s Monterey formation siliceous shales. Quarterly report, April 1, 1996 - June 30, 1996

Description: The primary objective of this research is to conduct advanced reservoir characterization and modeling studies in the Antelope Shale reservoir. Characterization studies will be used to determine the technical feasibility of implementing a CO{sub 2} enhanced oil recovery project in the Buena Vista Hills field. The Buena Vista Hills pilot CO{sub 2} project will demonstrate the economic viability and widespread applicability Of CO{sub 2} flooding in fractured siliceous shales reservoirs of the San Joaquin Valley. The research consists of four primary work processes: Reservoir Matrix and Fluid Characterization; Fracture Characterization; Reservoir Modeling and Simulation; and, CO{sub 2} Pilot Flood and Evaluation. Work done in these areas can be subdivided into two phases or budget periods. The first phase of the project will focus on the application of a variety of advanced reservoir characterization techniques to determine the production characteristics of the Antelope Shale reservoir. Reservoir models based on the results of the characterization work will be used to evaluate how the reservoir will respond to secondary recovery and EOR processes. The second phase of the project will include the implementation and evaluation of an advanced EOR pilot in the West Dome of the Buena Vista Hills field. The Buena Vista Hills project realized it`s first major milestone in the second quarter of 1996 with the pending drilling of proposed project injection well. Regional fracture characterization work was also initiated in the second quarter. This report summarizes the status of those efforts.
Date: June 1, 1996
Creator: Smith, S.C.
Partner: UNT Libraries Government Documents Department

Recovery of bypassed oil in the Dundee formation using horizontal drains. Quarterly progress report, October 1, 1995--December 31, 1995

Description: The principal objective of this project is to demonstrate the feasibility and economic success of producing oil from abandoned or nearly abandoned fields in the Dundee Formation of Central Michigan using horizontal drilling technology. A site for a horizontal well was selected in Crystal Field, a nearly-abandoned Dundee oil field in Michigan. This field had produced over 8 million barrels of oil, mostly in the 1930`s and 1940`s. At the height of development, Crystal Field produced from 193 wells, but by 1995, only seven producing wells remained, each producing less than 10 bbls/day. A horizontal well was drilled as a field demonstration pilot, funded through this DOE project, and was immensely successful. Core and logs from the Dundee interval were recovered from a vertical borehole at the same surface location. The horizontal well was brought on production at a rate of 100 bbls/day and is probably capable of producing at a higher rate. The addition of several horizontal wells, similar to the demonstration well, will likely add another 2 million bbls (or more) to the cumulative production of the field over the next few years. The presence of untapped oil in this Dundee field was dramatically demonstrated and the favorable economics were made clearly evident. If other abandoned Dundee fields are re-developed in a similar manner, the additional oil produced domestically will probably be about 80 to 100 million bbls.
Date: January 29, 1996
Creator: Wood, J.R.
Partner: UNT Libraries Government Documents Department

Feasibility of optimizing recovery and reserves from a mature and geological complex multiple turbidite offshore California reservoir through the drilling and completion of a trilateral horizontal well. Quarterly report, January 1--March 31, 1996

Description: The main objective of this project is to devise an effective re-development strategy to combat producibility problems related to the Repetto turbidite sequences of the Carpinteria Field. The lack of adequate reservoir characterization, high-water cut production, and scaling problems have in the past contributed to the field`s low productivity. To improve productivity and enhance recoverable reserves, the following specific goals are proposed: develop an integrated database of all existing data from work done by the former ownership group; expand reservoir drainage and reduce sand problems through horizontal well drilling and completion; operate and validate reservoir`s conceptual model by incorporating new data from the proposed trilateral well; transfer methodologies employed in geologic modeling and drilling multilateral wells to other operators with similar reservoirs. This report is an overview of the work that has been completed since the prior reporting period and is broken out by task number.
Date: May 20, 1996
Creator: Coombs, S.F.
Partner: UNT Libraries Government Documents Department

Advanced oil recovery technologies for improved recovery from slope basin clastic reservoirs, Nash Draw Brushy Canyon Pool, Eddy County, NM. Quarterly technical progress report, October 1--December 31, 1995

Description: Objective is to demonstrate that a development program based on advanced reservoir management methods can significantly improve oil recovery and to transfer this technology to oil and gas producers in the Permian Basin. The demonstration plan includes developing a control area using standard reservoir management techniques and comparing the performance of the control area with an area developed using advanced management methods. Specific goals are (1) to demonstrate that a development drilling program and pressure maintenance program, based on advanced reservoir management methods, can significantly improve oil recovery compared with existing technology applications, and (2) to transfer the advanced technologies to oil and gas producers in the Permian Basin and elswhere in the US oil and gas industry. This is the first quarterly progress report on the project; results to date are summarized.
Date: January 22, 1996
Partner: UNT Libraries Government Documents Department

Increased oil production and reserves from improved completion techniques in the Bluebell Field, Uinta Basin, Utah. Annual report, October 1, 1994--September 30, 1995

Description: The Bluebell field produces from the Tertiary lower Green River and Wasatch Formations of the Uinta Basin, Utah. The productive interval consists of thousands of feet of interbedded fractured clastic and carbonate beds deposited in a fluvial-dominated deltaic lacustrine environment. Wells in the Bluebell field are typically completed by perforating 40 or more beds over 1,000 to 3,000 vertical feet (300-900 m), then applying an acid-fracture stimulation treatment to the entire interval. This completion technique is believed to leave many potentially productive beds damaged and/or untreated, while allowing water-bearing and low-pressure (thief) zones to communicate with the wellbore. Geologic and engineering characterization has been used to define improved completion techniques. The study identified reservoir characteristics of beds that have the greatest long-term production potential.
Date: May 1, 1996
Creator: Allison, M.L. & Morgan, C.D.
Partner: UNT Libraries Government Documents Department

An example of using oil-production induced microseismicity in characterizing a naturally fractured reservoir

Description: Microseismic monitoring was conducted using downhole geophone tools deployed in the Seventy-Six oil field, Clinton County, Kentucky. Over a 7-month monitoring period, 3237 microearthquakes were detected during primary oil production; no injection operations were conducted. Gross changes in production rate correlate with microearthquake event rate with event rate lagging production-rate changes by about 2 weeks. Hypocenters and first-motion data have revealed low-angle, thrust fracture zones above and below the currently drained depth interval. Production history, well logs and drill tests indicate the seismically-active fractures are previously drained intervals that have subsequently recovered to hydrostatic pressure via brine invasion. The microseismic data have revealed, for the first time, the importance of the low-angle fractures in the storage and production of oil in the study area. The seismic behavior is consistent with poroelastic models that predict slight increases in compressive stress above and below currently drained volumes.
Date: June 1, 1996
Creator: Rutledge, J.T.; Phillips, W.S.; Schuessler, B.K. & Anderson, D.W.
Partner: UNT Libraries Government Documents Department

Improved oil recovery in fluvial dominated deltaic reservoirs of Kansas - near - term. Technical progress report, June 17, 1994--June 17, 1995

Description: Common oil field problems exist in fluvial dominated deltaic reservoirs in Kansas. The problems are poor waterflood sweep and lack of reservoir management. The poor waterflood sweep efficiency is due to (1) reservoir heterogeneity, (2) channeling of injected water through high permeability zones or fractures, and (3) clogging of water injection wells with solids as a result of poor water quality. In many instances the lack of reservoir management is due to lack of (1) data collection and organization, (2) integrated analysis of existing data by geological and engineering personnel, and (3) identification of optimum recovery techniques. Two demonstration sites operated by different independent oil operators are involved in the project. The Stewart Field (on the latter stage of primary production) is located in Finney County, Kansas, and was operated by Sharon Resources, Inc. and is now operated by North American Resources Company. 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 objective is to increase recovery efficiency and economics in these type of reservoirs. The technologies being applied to increase waterflood sweep efficiency are (1) in situ permeability modification treatments, (2) infill drilling, (3) pattern changes, and (4) air flotation to improve water quality. The technologies being applied to improve reservoir management are (1) database development, (2) reservoir simulation, (3) transient testing, (4) database management, and (5) integrated geological and engineering analysis.
Date: July 1, 1996
Partner: UNT Libraries Government Documents Department

A simulation-based reservoir management program

Description: There are more than 5,200 independent oil and gas producers operating in the US today (based on current IPAA membership figures). These companies are playing an increasingly important role in production of hydrocarbons in California and elsewhere in the US. Pacific Operators Offshore, Inc., in a historic collaboration with its government royalty owners, the California State Lands Commission and the Minerals Management Service of the US Department of Interior, is attempting to redevelop the Carpinteria Offshore Field after two-and-a-half decades of production and partial abandonment by a previous operator. This paper will describe a project which focuses on the distribution of advanced reservoir management technologies (geological, petrophysical, and engineering) to independent producers like Pacific Operators Offshore, Inc. The evolving information highway, specifically the World Wide Web (WWW), serves as the distribution medium. The project to be described in this paper is an example of the implementation of a reservoir management tool which is supported by distributed databases, incorporates a shared computing environment, and integrates stochastic, geological, and engineering modeling.
Date: May 1, 1996
Creator: Voskanian, M.M.; Kendall, R.P.; Whitney, E.M.; Coombs, S.; Paul, R.G. & Ershaghi, I.
Partner: UNT Libraries Government Documents Department

Coupled transport and chemical interactions in petroleum reservoirs: Multicomponent tracer demonstration large scale application

Description: This is the final report for a two-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). Enhanced tracer approaches for characterization of oil reservoirs were demonstrated and evaluated for both transport and chemical interactions. Existing tracer technology is limited in numbers of tracers and relies heavily on radioactive species. Using expertise developed at Los Alamos through applications of chemical, analytical, and geologic techniques to testing, alternative energy and environmental programs, we have defined new classes of conservative and reactive non-radioactive tracers for both laboratory and field experiments. Reservoir experiments are critical to improved reservoir management, characterization of CO{sub 2} flooding, and validation/development of significantly enhanced simulators utilizing advanced computational technology. A demonstration field tracer experiment has been performed in the Salt Creek Field Unit in West Texas to characterize a section of the reservoir under water-flood. An initial robust set of tracers, field experience in their application, and interpretation methodology was demonstrated for large scale multi-well, multi-tracer flow and connectivity tests.
Date: July 1, 1996
Creator: Janecky, D.R.; Spall, W.D.; Sandoval, W. & Williams, S.
Partner: UNT Libraries Government Documents Department

Advanced oil recovery technologies for improved recovery from slope basin clastic reservoirs, Nash Draw Brushy Canyon Pool, Eddy County, NM. Quarterly technical progress report, April 1, 1996--June 30, 1996

Description: The overall objective of this project is to demonstrate that a development program based on advanced reservoir management methods can significantly improve oil recovery. The demonstration plan includes developing a control area using standard reservoir management techniques and comparing the performance of the control area with an area developed using advanced reservoir management methods. Specific goals to attain the objective are: (1) to demonstrate that a development drilling program and pressure maintenance program, based on advanced reservoir management methods, can significantly improve oil recovery compared with existing technology applications, and (2) to transfer the advanced methodologies to oil and gas producers in the Permian Basin and elsewhere in the U.S. oil and gas industry.
Date: July 26, 1996
Creator: Murphy, M.B.
Partner: UNT Libraries Government Documents Department

Permeability-thickness determination from transient production response at the southeast geysers

Description: The Fetkovich production decline curve analysis method was extended for application to vapor-dominated geothermal reservoirs for the purpose of estimating the permeability-thickness product (kh) from the transient production response. The analytic dimensionless terms for pressure, production rate, decline rate, and decline time were derived for saturated steam using the real gas potential and customary geothermal production units of pounds-mass per hour. The derived terms were numerically validating using ``Geysers-line`` reservoir properties at initial water saturation of 0 and at permeabilities of 1, 10, and 100 mD. The production data for 48 wells in the Southeast Geysers were analyzed and the permeability-thickness products determined from the transient production response using the Fetkovich production decline type curve. The kh results were in very good agreement with the published range at the Southeast Geysers and show regions of high permeability-thickness.
Date: August 1, 1996
Creator: Faulder, D.D.
Partner: UNT Libraries Government Documents Department

CO2 Huff-n-Puff process in a light oil shallow shelf carbonate reservoir. Annual report, January 1, 1995--December 31, 1995

Description: The application of cyclic CO{sub 2}, often referred to as the CO{sub 2} Huff-n-Puff process, may find its niche in the maturing waterfloods of the Permian Basin. Coupling the CO{sub 2} H-n-P process to miscible flooding applications could provide the needed revenue to sufficiently mitigate near-term negative cash flow concerns in the capital intensive miscible projects. Texaco Exploration & Production Inc. and the U.S. Department of Energy have teamed up in an attempt to develop the CO{sub 2} Huff-n-Puff process in the Grayburg/San Andres formation; a light oil, shallow shelf carbonate reservoir within the Permian Basin. This cost-shared effort is intended to demonstrate the viability of this underutilized technology in a specific class of domestic reservoir. A significant amount of oil reserves are located in carbonate reservoirs. Specifically, the carbonates deposited in shallow shelf (SSC) environments make up the largest percentage of known reservoirs within the Permian Basin of North America. Many of these known resources have been under waterflooding operations for decades and are at risk of abandonment if crude oil recoveries cannot be economically enhanced. The selected site for this demonstration project is the Central Vacuum Unit waterflood in Lea County, New Mexico.
Date: September 1, 1996
Creator: Wehner, S.C.; Boomer, R.J.; Cole, R.; Preiditus, J. & Vogt, J.
Partner: UNT Libraries Government Documents Department

Improved oil recovery for independent oil and gas producers

Description: There are more than fifty-two hundred independent oil and gas producers operating in the US today (based on current IPAA membership figures). Many of these companies have instituted improved oil recovery programs in some form, but very few have had access to the state-of-the-art modeling technology routinely used by major producers to manage these projects. Since independent operators are playing an increasingly important role in production of hydrocarbons in the US, it is important to promote state-of-the-art management practices, including the planning and monitoring of improved oil recovery projects, within this community. This is one of the goals of the Strategic Technologies Council, a special interest group of Independent Oil and Gas producers. This paper describes a project which focuses on the distribution of advanced reservoir management technologies (geological, petrophysical, and engineering) to independent producers. The evolving information highway serves as the distribution medium, specifically the World Wide Web (W3). The procedure for launching petrotechnical applications and retrieving results over the W3 will be presented. A paradigm for the interaction between the independents, the petroleum service sector, and government will also be presented. Of principal concern is the cost of making high-tech modeling applications accessible to independent operators.
Date: April 1, 1996
Creator: Sgro, A.G.; Kendall, R.P.; Kindel, J.M.; Webster, R.B. & Whitney, E.M.
Partner: UNT Libraries Government Documents Department

An integrated study of the Grayburg/San Andres Reservoir, Foster and South Cowden fields, Ector County, Texas. Quarterly report, April 1--June 31, 1996

Description: The principal objective of this research is to demonstrate in the field that 3D seismic data can be used to aid in identifying porosity zones, permeability barriers and thief zones and thereby improve waterflood design. Geologic and engineering data will be integrated with the geophysical data to result in a detailed reservoir characterization. Reservoir simulation will then be used to determine infill drilling potential and the optimum waterflood design for the project area. This design will be implemented and the success of the waterflood evaluated.
Date: October 17, 1996
Creator: Trentham, R.C.; Weinbrandt, R. & Robertson, W.
Partner: UNT Libraries Government Documents Department

Multigrid applied to implicit well problems

Description: This paper discusses the application of multigrid techniques to the solution of implicit well equations, which arise in the numerical simulation of oil reservoirs. The emphasis is on techniques which can exploit parallel computation.
Date: October 1, 1996
Creator: Dendy, J.E. Jr. & Tchelepi, Hamdi
Partner: UNT Libraries Government Documents Department

Integration of advanced geoscience and engineering techniques to quantify interwell heterogeneity. Quarterly technical report, April 1, 1996--June 30, 1996

Description: The objective of this project is to integrate advanced geoscience and reservoir engineering concepts with the goal of quantifying the dynamics of fluid-rock and fluid-fluid interactions as they relate reservoir architecture and lithologic characterization. This interdisciplinary effort will integrate geological and geophysical data with engineering and petrophysical results through reservoir simulation. Subcontractors from Stanford University and the University of Texas at Austin are collaborating on the project. Several members of the Petroleum Recovery Research Center are participating in the development of the improved reservoir description by integration of the field and laboratory data, as well as in the development of quantitative reservoir models to aid performance predictions. Technical progress is summarized for geologic studies and field operations at Sulimar Queen Field, New Mexico, and technology transfer from this study.
Date: October 1, 1996
Creator: Buckley, J.S. & Ouenes, A.
Partner: UNT Libraries Government Documents Department

Geological and petrophysical characterization of the ferron sandstone for 3-D simulation of a fluvial-deltaic reservoir. Annual report, October 1, 1994--September 30, 1995

Description: The objective of the Ferron Sandstone project is to develop a comprehensive, interdisciplinary, quantitative characterization of a fluvial-deltaic reservoir to allow realistic interwell and reservoir-scale models to be developed for improved oil-field development in similar reservoirs world-wide. Quantitative geological and petrophysical information on the Cretaceous Ferron Sandstone in east-central Utah was collected. Both new and existing data is being integrated into a three-dimensional model of spatial variations in porosity, storativity, and tensorial rock permeability at a scale appropriate for inter-well to regional-scale reservoir simulation. Simulation results could improve reservoir management through proper infill and extension drilling strategies, reduction of economic risks, increased recovery from existing oil fields, and more reliable reserve calculations. Transfer of the project results to the petroleum industry is an integral component of the project. This report covers research activities for fiscal year 1994-95, the second year of the project. Most work consisted of developing field methods and collecting large quantities of existing and new data. We also continued to develop preliminary regional and case-study area interpretations. The project is divided into four tasks: (1) regional stratigraphic analysis, (2) case studies, (3) reservoirs models, and (4) field-scale evaluation of exploration strategies.
Date: May 1, 1996
Creator: Chidsey, T.C. Jr. & Allison, M.L.
Partner: UNT Libraries Government Documents Department

Optimization of a steam-assisted gravity drainage project in the Monarch sands of the south Midway-Sunset field

Description: This report presents several scenarios for oil recovery optimization of Berry Petroleum Company`s properties in the Midway-Sunset field in Kern County, California. The primary goal was to evaluate reservoir performance with a number of vertical wells recompleted in the lower half of the existing oil bank and with a number of horizontal infill wells. Case comparisons and recommendations are based solely on oil production rates and cumulative oil production obtained from the simulations; no economic analyses were performed as part of this study. The results indicate that recompleting two thirds of the vertical wells in the lower half of the existing oil bank will give the most improvement in oil recovery. The models also show that accelerated oil recovery will be obtained from the horizontal well scenario (Case h3), with initial oil rates higher than the vertical well recompletion scenario (Case 3). However, in the long term (11 year period), the cumulative oil production of the horizontal well will fall below that of the vertical well recompletion scheme (Case h3 vs. Case 3). Additionally, a combination of horizontal wells with recompletion of 1/3 of the vertical wells will give a significant improvement in oil recovery (Case h8). We recommend that further studies focus on optimizing the amount of steam injected in horizontal wells, frequency and length of the steam-injection and steam-soak periods, optimal horizontal well spacing, and ideal location of horizontal well in the oil bank. This study used Western Atlas` VIP-THERM numerical simulator to generate the history match and all of the alternative strategies presented in this report. The results presented in this report are based on information and field data provided by Berry Petroleum Company.
Date: February 1, 1996
Creator: Chona, R.A.; Hazlett, W.G. & Rajtar, J.M.
Partner: UNT Libraries Government Documents Department

Application of integrated reservoir management and reservoir characterization to optimize infill drilling. Quarterly progress report, June 13, 1996--September 12, 1996

Description: At this time, eighteen (18) 10-acre infill wells have been drilled as part of the Field Demonstration phase of the project. Of the fourteen producing wells drilled to date, twelve are currently on production, and ten are pumped-off and producing at stable rates. Current Unit production is approximately 3,600-3,700 STBO/D, and approximately 850 STBO/D incremental production has been added to date. The remaining producing well and four injection wells are currently being completed. A change in the Statement of Work has been approved so that we can drill additional 10-acre infill wells during the next quarter as budget constraints allow. Production flowlines are laid for each new producing well as they are put on production. Injection lines are being laid for the injection wells as they are completed. All data required for the validation of the Budget Period I Reservoir Characterization, Reservoir Management, and Reservoir Simulation Studies are being acquired and analyzed during the Field Demonstration Period.
Date: September 12, 1996
Partner: UNT Libraries Government Documents Department