1. Status of Task 1 (Monitoring) March 27 - 30, 2001 - Milan, Italy

2. Task 1 - Monitoring Monitoring Methods Conventional methods completed Need to add fiber optics Need to finalize PLTs Need to improve fractured monitoring Need to incorporate specific Best Practices – suggestions?

3. Task 1 – Monitoring Methods Falloff –Introduction discussing differences between production and injection –Mobility –Injectivity and falloff definitions –Analytical relationships –Analogs to buildup testing –Injectivity – liquid-filled, unit mobility –Falloff – liquid-filled, unit mobility

4. Task 1 – Monitoring Methods Falloff –Multiple-rate testing –Injection – Non-Unit Mobility –Falloff – Non-Unit Mobility –Example Falloff – Non-Unit Mobility –Example Falloff – Two-Rate (needs to be completed) –Fractures – needs to be completed –Have analyzed Elf and Maersk data and need to include it in the Best Practices.

5. Task 1 – Monitoring Methods Average Reservoir Pressure –Why is it important? –How is it determined? Analytical methods are shown even though software or reservoir simulation might and should be carried out because of the complexity of well interactions. –Generic example shown highlighting false pressure. - Add example from provided field data - e.g. Phillips’ examples – already processed

6. Task 1 – Monitoring Methods Hall Plots –Introduction –Theory –Simplified Version to be avoided –Modified Hall Plot –Add Heriot-Watt developments and example. –Horizontals –Fractured –Meaning of the Slope –Applications –Add Advantek moving average considerations as a supplement or a separate method.

7. Task 1 – Monitoring Methods Step Rate Testing –Has been presented previously –New Statoil data to be included –Include some previously processed Maersk data

8. Task 1 – Monitoring Methods Pulse Testing –Basic Theory for Single and Multiple Pulses –Designing a Pulse Test

9. Task 1 – Monitoring Methods Interference Testing –Basic Theory is given even though you would probably use simulation –Single injecting well and a monitoring well –Two well interference with flow/injection –Analysis –Precautions –References

10. Task 1 – Monitoring Methods Drillstem Testing –Very brief overview only

11. Task 1 – Monitoring Methods Hydraulic Impedance Testing –Has been previously discussed.

12. Task 1 – Monitoring Methods Production Logging Testing –Needs to be written. –Include fiber optics here.

13. Task 1 – Monitoring Methods Conventional Leakoff Testing Extended Leakoff Testing Micro-Hydraulic Fracturing

14. Task 1 – Monitoring Methods Tiltmeters –Contacts –Introduction –Surface Systems –Examples –Downhole Systems –Additional References

15. Task 1 – Monitoring Methods Microseismic Monitoring –Contacts –Introduction –Placement of Receivers –Limitations –Interpretation –Field Examples –Methodology –Additional References

16. Task 1 – Monitoring Methods Real-Time Diagnostics –For acidizing – done –For fracturing – in progress

17. Task 1 - Monitoring Fracture Models –Audit and Summary Completed –Navigation in the ToolBox needs to be improved –Add “high-level” comparison to Best Practices –Any missing models? Yes – are being added

18. Task 1 - Monitoring Well Performance Prepared introductory level presentation on Well Performance for Injectors Radial flow completed Wellbore Hydraulics Completed – more on restrictions Completions

19. Task 1 - Monitoring How is this integrated into the Best Practices Site.Best Practices Site Currently is in Operational Considerations and Performance Needs further tie in with radial flow models and with models that are functional for soft formations.