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Method to Help Improve Long-Term Production Following Shale Fracture Treatments. Dave Allison October 31, 2011. AccessFrac SM Service. Poor Proppant Distribution. Not Contacting Enough of the Reservoir. Hindered Hydrocarbon Production.

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Method to Help Improve Long-Term Production Following Shale Fracture Treatments


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    1. Method to Help Improve Long-Term Production Following Shale Fracture Treatments Dave Allison October 31, 2011

    2. AccessFracSM Service Poor Proppant Distribution Not Contacting Enough of the Reservoir Hindered HydrocarbonProduction Method to Help Improve Long-Term Production Following Shale Fracture Treatments

    3. AccessFrac Service Dave Allison Tenet Manager – MSRV

    4. AccessFrac Service Poor Proppant Distribution Not Contacting Enough of the Reservoir Hindered HydrocarbonProduction Method to Help Improve Long-Term Production Following Shale Fracture Treatments

    5. AccessFrac Service Improved Proppant Distribution Computer Modeling Studies Analysis of Microseismic Mapping Analysis of Production Logs Lower than Expected Initial Production Fasterthan Expected Production Declines

    6. Improved Proppant Distribution

    7. Improved Proppant Distribution Near Wellbore • Temporary Blockage • Self Removing • Environmentally Friendly • Highly Compatible BioVert® NWB material

    8. AccessFrac Service Traditionally use drillable bridge plugs to isolate clusters • Physical barrier • Means to deliver perforating guns • Highly reliable • Drillable Improvement Opportunities / Risk Mitigation • Reduce time – installation • Reduce time – removal • Reduce risk – premature set or perforating • Reduce cost – displacement fluids What other mechanism can we use to isolate clusters? Biovert ® NWB Self-Degrading Diverting Agent

    9. Traditional - Plug and Perforate • Pump perforating gun and frac plug on depth • Set the frac plug • Correlate perforating gun and perforate • Pull out of the hole • Time requirements 3-5 hours • Repeat the process 15 – 30 times • Equipment standby time between 2 and 7 days • At conclusion the plugs have to be drilled out using a rig

    10. AccessFrac Service • Group 2 or 3 perforation clusters • Pump perforating guns and frac plug on depth • Pump frac treatments followed by diverters • Repeat as needed to cover lateral • Savings – Time 6-10 hours (perf & plug ops) per group • Savings – Time 1-4 days (equipment stand-by ) per well • Savings – Safety: reduce perforating exposure • Reduce - Risk of bridge plug setting prematurely • Savings – Cost of 66% of bridge plugs • Savings – Time reduce drill out ops by 66% • To clean well out: • Diverter self degrades • Plugs drilled out using rig Achieve much better access to complex fracture networks • Savings – Reduced displacement fluid by 66% • Savings – Time (faster) for fluid flow back

    11. New Completion - Denton County – Horizontal Well Replace Pump Down Plug Case History 21 - 2010 Treatment Chart: 1st Biovert NWB on perforations +60 psi increase 2nd Diverter gives 115 psi increase 3rd Diverter gives 1542 psi increase 2nd 1st 3rd

    12. New Completion - Denton County – Horizontal Well Replace Pump Down Plug Case History 22 - 2010 Treatment Chart: BiovertNWB agent on perforations +916 psi increase Biovert NWB Results: Saved considerable time and expense. Production equals offsets.

    13. AccessFrac Service Poor Proppant Distribution Not Contacting Enough of the Reservoir Hindered HydrocarbonProduction Method to Help Improve Long-Term Production Following Shale Fracture Treatments

    14. AccessFrac Service Enhanced Reservoir Contact Analysis of Microseismic Mapping Analysis of Production Logs Lower than Expected Initial Production Fasterthan Expected Production Declines

    15. 1 2 3 4 Deep Reservoir Diversion Candidate Non Stimulated Area Stage 3 Non Stimulated Area Stage 4

    16. Enhance Reservoir Contact Deep Reservoir • Temporary Blockage • Self Removing • Environmentally Friendly • Highly Compatible BioVert CF material

    17. AccessFrac Service Poor Proppant Distribution Not Contacting Enough of the Reservoir Hindered HydrocarbonProduction Method to Help Improve Long-Term Production Following Shale Fracture Treatments

    18. Customizable Conductivity 26% Porosity 48% Porosity 65+% Porosity 85+% Porosity

    19. Customizable Conductivity Surface Modification Agent • Enhanced Conductivity • Water Based System • Highly Compatible • SandWedge Enhancer Family • 100,000+ applications 30% more conductivity SandWedge® ABC enhancer

    20. SandWedge Enhancer SandWedge No. 2 No. 3 No. 4 No. 5 No. 6 No. 7 No. 8 No. 9 No. 10 No. 11 No. 12 No. 13 No. 14 No. 15 No. 16

    21. AccessFrac Service Complex fracture network with proppant using AccessFrac service Typical shale fracture without diversion Method to Help Improve Long-Term Production Following Shale Fracture Treatments

    22. AccessFrac Service Poor Proppant Distribution BioVert NWB BioVert CF Not contacting enough of the reservoir SandWedge ABC Hindered HydrocarbonProduction Method to Help Improve Long-Term Production Following Shale Fracture Treatments

    23. AccessFrac Service Thank you Halliburton Energy Services