Match to low pressure profile geothermal low pressure

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Unformatted text preview: ure Figure 7: Steady state comparison of the temperature response between (red) all zones with the same drawdown and (blue) the middle zone having a lower drawdown – but with the same flow rate. Match to low pressure profile Geothermal Low pressure middle layer Match flow profile Match Joule-Thomson inflow temperature Flow profile Low pressure JouleThomson temperature Figure 8: Steady state comparison of the temperature response between middle zone having a lower drawdown (blue) – but with the same flow rate and the middle zone having a higher drawdown and lower flow rate (red) giving the same temperature response. SPE 115816 11 Well shut-in Well Well flowing Stable inflow zone Figure 9: Example 1 3D view of the reservoir DTS data during the flowing and shut-in periods. Shut-in data points Flowing temperature Line fit Extrapolated shutin temperature Figure 10: Example 1 geothermal baseline estimation using extrapolated log Horner time data. 12 SPE 115816 Geothermal Geothermal “Pivot” point Flowing temperature 12 hour shut-in temperature Figure 11: Example 1 selected DTS curves showing flowing and shut-in profiles. Geothermal Spinner flow Model fit Calculated flow rate Flowing temperature Figure 12: Example 1 simulator flow analysis compared to a PLT spinner log. SPE 115816 13 Flowing well pressure Reservoir Reservoir zone pressures Figure 13: Example 1 simulator reservoir pressure analysis. W hu ls el W in t- ell g win flo Figure 14: Example 2 3D view of the reservoir DTS data during the flowing and shut-in periods. 14 SPE 115816 Geothermal Geothermal Flowing temperature Immediate shutin temperature 10 hour shut-in temperature “Pivot” point Cross-flow Crosson shut-in shut- Figure 15: Example 2 selected DTS curves showing flowing and shut-in profiles. Geothermal Model fit Calculated flow rate Flowing temperature 10 hour shut-in temperature Figure 16: Example 2 simulator flow analysis. SPE 115816 15 Flowing well pressure Reservoir Reservoir zone pressures Figure 17: Example 2 simulator reservoir pressure analysis....
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