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Joint Chalk Research Experiences and Plans

Joint Chalk Research Experiences and Plans. What is JCR?. Consortium to Perform Common Research on :. Geology of Chalk Rock Properties of Chalk Well Productivity in Chalk Fields Improved Oil Recovery in Chalk Rock Mechanical Properties of Chalk. What Is JCR ?. Past and Current Sponsors

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Joint Chalk Research Experiences and Plans

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  1. Joint Chalk ResearchExperiences and Plans

  2. What is JCR? Consortium to Perform Common Research on : • Geology of Chalk • Rock Properties of Chalk • Well Productivity in Chalk Fields • Improved Oil Recovery in Chalk • Rock Mechanical Properties of Chalk

  3. What Is JCR ? • Past and Current Sponsors • Agip • Amerada Hess • BP (Amoco) • Conoco • Dansk Olie og Naturgas • Elf • Enterprise • Fina • Hydro • Mærsk • Phillips • RWE-DEA • Statoil • Texas Eastern • Total • Veba Supported by NPD and DEA

  4. Why Was Chalk Research Important? • Relatively Unknown Geological Territory • Experiences From Other Parts of the World Did Not Apply • Real Challenge To Produce Oil From These Fields

  5. Why Was JCR Needed ?

  6. Why Was JCR Needed ? Estimated Recovery Factor - 18 - 23%

  7. JCR I JCR II JCR III JCR IV JCR V JCR VI ? 1995 2000 1980 1985 1990 JCR History Total Expenditure Through 2000: 77 million NOK

  8. JCR Topics By Expenditure

  9. JCR - Technical Merits IOR - Waterflooding Works In Chalk Fields Assisted in Providing Theoretical Foundation

  10. JCR - Technical Merits Improved Reservoir Compaction Understanding 1984 1975 5 Drainholes 3 Drainholes

  11. JCR - Technical Merits

  12. JCR - Cooperative Merits • Forum For Technical Discussions • Mechanism For Networking • Mechanism For Experience Transfer • Share Critical Data and Information

  13. JCR - Cooperative MeritsAccomplishments • Chalk Expertise Building at Commercial Laboratories, Universities and R&D Institutions • Informal Network Building Across Companies • Recruitment of New Players in New Plays

  14. JCR - Future • Still Many Technical Challenges To Address • High Interest Among Companies to Continue Into A Next Phase

  15. JCR VI - Focus Areas • Reduce Uncertainty in Waterflood Efficiency Assessments • Evaluate Alternative Methods to Further Decrease Remaining Oil • Improved Well Productivity • Improve Modeling of Geomechanical Effects • Improved Models/Descriptions for Well Placement

  16. JCR VI - Waterflood Evaluations Objectives • Reduce uncertainty in log interpretations • Identify needs for new tools/procedures for improved interpretations • Identify flank waterflood potential

  17. JCR VI - Improved Recovery • Objective • Assess the potential for additional oil recovery from water flooded chalk reservoirs by alternating CO2 and water orCO2 enriched water injection • assess the uncertainty associated with the practical implementation of the method • Scope • Evaluate microscopic processes • Define and execute experimental program • Perform large scale uncertainty assessments

  18. JCR VI - Well Productivity Objectives • Recommend field specific well completion and stimulation design criteria for optimum well performance and well life • Benchmark analytical tools for fracture growth predictions • Develop processes/tools for well life cycle cost optimization

  19. JCR VI - Geomechanical Projects Objectives • Implementation, verification and refinement of a unified geomechanical model • Experimental work to improve definition of constitutive behavior of chalk • Evaluation of coupled geomechanics and fluid flow models

  20. JCR VI - Reservoir Characterization • Objective • Improve understanding/description of the major depositional systems with focus on • Heterogeneity • Anisotropy • Rock type • Develop acoustic model for behavior of fractured chalk under depletion and waterflooding for use in 4D monitoring using P/S waves

  21. JCR VI - Way Forward • Project Definitions Currently Ongoing • Contractor Selections Currently Ongoing • Final Project Reviews - Q2, 2002 • Contract Signing - Q2/Q3, 2002 • Expected Budget - 15 - 20 mill. NOK over two - three year program

  22. JCR Phase I - 1982-85 • Projects: • Chalk Characterization • Chemical Interaction, Wettability, Imbibition • Mechanical Properties of Chalk • Stimulation Methods and Practices • Project Leaders: Agip, Elf, Fina, Phillips • Budget: 15.7 MMNOK

  23. JCR Phase II - 1987-90 • Projects: • Mechanical Properties of Chalk • Well Stability in Soft Chalk • Chemical Aspects of Acidizing Chalk Reservoirs • Quantitative Chalk Characterization • Long Term Effects of Water Injection on Strain in Chalk • Evaluation of Water Injection in Fractured Chalk • Project Leaders: Agip, DEA, Fina, Phillips, Total • Budget: 11.1 MMNOK

  24. JCR Phase III - 1990-92 • Projects: • Fractures • Productivity - Water/Oil Systems • Productivity - Permeabilities • Productivity - Gas/Oil Systems • Productivity - Mechanical Properties • Completions • Project Leaders: Enterprise, Fina, Hydro, Mærsk, Phillips, Total • Budget: 15.7 MMNOK

  25. JCR Phase IV - 1994-96 • Projects: • Chalk Monograph • Geostatistical Simulation of Chalk Properties • Waterflood Efficiency in Chalk Reservoirs • Rock Mech. Data & Constitutive Models of Chalk • Rock Mechanics and Water Injection • Compaction, Subsidence & Well Stability in Chalk • Horizontal Well Acidization • Project Leaders: Amerada Hess, Amoco, Enterprise, Mærsk, NPD, Phillips • Budget: 17.6 MMNOK

  26. JCR Phase V - 1997-99 • Projects: • Joint Stratigraphic Framework • Well Performance in Fractured Chalk Reservoirs • Characterization & Upscaling of Fractured Chalk • Chalk Rock Catalog • Air Injection in a North Sea Environment • Trapped Gas / WAG Program • Chalk Reservoir Simulation Forums • Chalk Geomechanics • Project Leaders: Amoco, Conoco, DEA, Mærsk, NPD, Phillips • Budget: 16.8 MMNOK

  27. JCR V Budget Breakdown By Country

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