Transcription of Drilling Technology and Costs
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Drilling Technology and Costs
CHAPTER 6 Drilling Technology and Costs Scope and Approach _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _6 3 Review of geothermal Drilling Technology _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _6 4 Early geothermal /EGS Drilling development _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _6 4 Current EGS Drilling Technology _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _6 5 Historical well Cost Data _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _6 8 General trends in oil and gas well completion Costs _ _ _ _ _ _ _ _ _ _ _ _ _ _6 9 MIT Depth Dependent (MITDD) Drilling cost index _ _ _ _ _ _ _ _ _ _ _ _ _ _ _6 12 Updated geothermal well Costs _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _6 17 Predicting geothermal well Costs with the Wellcost Lite Model _ _ _ _ _ _6 18 History of the Wellcost Lite model _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _6 18 Wellcost Lite model description _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _6 19 Drilling Cost Model Validation _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _6 19 Base case geothermal wells _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _6 19 Comparison with geothermal wells _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _6 22 Comparison with oil and gas wells _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _6 22 6 1 Model input parameter sensitivities a
the sparse data on geothermal well costs from the past three decades to current currency values, so that the wells can be compared on a common dollar basis. Oil and gas trends can then be combined with existing geothermal well costs to make rough estimates of EGS drilling costs as a function of depth. ...
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