1. Pedro Rodriguez Strategic Accounts Manager Improve Mature Fields

2. Agenda Maturing Fields – A Historical Perspective Wireline in the Life of a Field Dealing with Mature Fields: A Remediation Planning Cycle Horizontal Wells – Brownfield of the future

3. Maturing Fields – A Historical Perspective Courtesy Baker Hughes/WTRG Economics Recent focus has been in Shale and Horizontal Fields Attention to Shales neglects production realities

4. Maturing Fields – A Historical Perspective Significant Wells Drilled in the 20-30 year age range Most of these are possible candidates for remediation Many of these wells are sold over time to new owner/operators

5. Maturing Fields – A Historical Perspective Courtesy ZDNet/ International Energy Agency Production from Conventional Fields will remain significant This cannot be discounted Our primary discussion will be mature vertical wells

6. Wireline in the Life of a Field

7. Dealing with Mature Fields: A Remediation Cycle

8. Determining the Candidate Historical Production Economic Value Bypassed potential Fluids Produced Caustic / Corrosive? Issues Sanding, Asphaltene, Casing Collapse Legalities Lease or Mineral Right Issues?

9. Determine Well Condition Casing Integrity Logs Caliper Metal Thickness Cement Bond Logs Radial UltraSonic Mechanical Gauge Ring / CCL Gamma Ray (correlative) Pull/Set Plugs, etc. Other Downhole Camera Noise/Temperature Log Courtesy - www.drillingcourse.com Courtesy – Allied-Horizontal

10. Determining Well Condition- Sample Sample of Caliper Log Deformity not big enough to prevent logging tools Deformity WILL prevent Packer Deployment Plugs May Reveal structural weakness Courtesy Allied Horizontal Wireline

11. Evaluating Formation Evaluating Formation through Casing Resistivity and Density Not normally viable (some CH Res., but limited) Sonic Tools Dependent on Centralization and Acoustic Coupling Neutron NL vs. CNL Pulsed Neutron Courtesy Baker Atlas and PetroWiki (SPE)

12. Evaluating Formation - Sample “Stagefinder” is Courtesy Allied Horizontal Wireline Pulsed Neutron Typically the best option for formation Evaluation Can provide Neutron Porosity Sigma (to calculate Sw) Time Lapse NOTE: Knowledge of formation water important.

13. Design & Execute: Perforating Design and Systems Downhole Environment Geological attributes Type of Charge Configuration and Orientation Uphole Environment Operational Footprint Proximity to RF sources / RF safe needed Proximity to public “FocusShot” and “FAST” are Courtesy of Allied Horizontal Wireline

14. Design & Execute : Example ConventionalEngineered Result NOTE: A change in formation MAY REQUIRE a change in Perf Design!

15. Measuring Results Production Results Surface Results Production tests Downhole Results PLT’s or Fiber Optic Residual Issues Changes in Production (ex: Corrosive)

16. Horizontal Wells Brownfield of Future Environmental Challenges Temperatures Undulation Effect (Peak and Trough) Sanding and Water flowback Zonal Interaction Conveyance Challenges Tractor vs. Pump Down Perforating vs. Sleeve vs. TCP Need to Skip Guns Candid planning Photos Courtesy www.offshore-mag.com (norsk Hydro) and Welltecwww.offshore-mag.com

17. Pedro Rodriguez Strategic Accounts Manager