Downhole Techniques

From Open Energy Information

Exploration Technique: Downhole Techniques

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Exploration Technique Information
Exploration Group: Downhole Techniques
Exploration Sub Group: None
Parent Exploration Technique: Exploration Techniques
Information Provided by Technique
Lithology: Determination of lithology, grain size
Stratigraphic/Structural: Thickness and geometry of rock strata, fracture identification
Hydrological: Porosity, permeability, water saturation
Thermal: Formation temperature with depth
Dictionary.png
Downhole Techniques:
Downhole techniques are measurements collected from a borehole environment which provide information regarding the character of formations and fluids intersected by a well. These petrophysical data are fundamental to developing the understanding of a geothermal reservoir.
Other definitions:Wikipedia Reegle


 
Introduction
  • "The first downhole measurements are generally attributed to the Schlumberger brothers who developed the first geophysical resistivity log in 1927, followed by the spontaneous potential log in 1931. However, the earliest recorded well log was obtained by Lord Kelvin in 1869 with the collection of downhole temperature measurements.'"`UNIQ--ref-00000000-QINU`"'<br><br>

    Downhole measurements have become commonplace for any exploration or production well drilled because these data provide a relatively cost-effective means to evaluate a prospect.'"`UNIQ--ref-00000001-QINU`"' Through borehole measurements, it is possible to obtain a vast amount of information which is not necessarily accessible from surface measurements, drill cuttings, and core sampling alone.'"`UNIQ--ref-00000002-QINU`"' <br><br>

    Well logs provide information on physical properties versus depth while well testing enables an understanding of the behavior of the reservoir." cannot be used as a page name in this wiki.
  • The given value was not understood.
The first downhole measurements are generally attributed to the Schlumberger brothers who developed the first geophysical resistivity log in 1927, followed by the spontaneous potential log in 1931. However, the earliest recorded well log was obtained by Lord Kelvin in 1869 with the collection of downhole temperature measurements.[1]

Downhole measurements have become commonplace for any exploration or production well drilled because these data provide a relatively cost-effective means to evaluate a prospect.[2] Through borehole measurements, it is possible to obtain a vast amount of information which is not necessarily accessible from surface measurements, drill cuttings, and core sampling alone.[1]

Well logs provide information on physical properties versus depth while well testing enables an understanding of the behavior of the reservoir.

 
Use in Geothermal Exploration
  • "Downhole measurements can be interpreted to allow the determination of rock type, formation thickness, porosity, permeability, resistivity, bulk density, fracture zones, fluid characteristics and fluid saturation.'"`UNIQ--ref-00000003-QINU`"' Since the measurements are collected in-situ within the well, downhole techniques are capable of accurately constraining these reservoir parameters relative to depth.'"`UNIQ--ref-00000004-QINU`"'<br><br> Gaining an understanding of these reservoir parameters greatly assists in the exploration, resource assessment and reservoir confirmation phases of geothermal energy development.'"`UNIQ--ref-00000005-QINU`"'" cannot be used as a page name in this wiki.
  • The given value was not understood.
Downhole measurements can be interpreted to allow the determination of rock type, formation thickness, porosity, permeability, resistivity, bulk density, fracture zones, fluid characteristics and fluid saturation.[1] Since the measurements are collected in-situ within the well, downhole techniques are capable of accurately constraining these reservoir parameters relative to depth.[2]

Gaining an understanding of these reservoir parameters greatly assists in the exploration, resource assessment and reservoir confirmation phases of geothermal energy development.[3]





The given value was not understood.


No exploration activities found.



      Document #Analysis
      Type
      ApplicantGeothermal
      Area
      Lead
      Agency
      District
      Office
      Field
      Office
      Mineral
      Manager
      Surface
      Manager
      Development
      Phase(s)
      Techniques
      BLM-NV-WN-ES-08-01-1310, NV-020-08-01EANevada Geothermal PowerBlue Mountain Geothermal AreaBLMBLM Winnemucca District OfficeBLM Humboldt River Field OfficeBLMBLMGeothermal/Power PlantDownhole Techniques
      Well Testing Techniques
      Drilling Techniques
      Development Drilling
      DOI-BLM-NV-C010-2010-0006-EAEAOrmat Technologies IncGabbs Valley Geothermal AreaBLMBLM Carson City District OfficeBLM Stillwater Field OfficeBLMBLMGeothermal/ExplorationDownhole Techniques
      Well Testing Techniques
      Drilling Techniques
      Exploration Drilling
      DOI-BLM-NV-C010-2010-0008-EAEAMagma EnergySoda Lake Geothermal AreaBLMBLM Carson City District OfficeBLM Stillwater Field OfficeBLMBLMGeothermal/ExplorationDownhole Techniques
      Well Testing Techniques
      Drilling Techniques
      Exploration Drilling
      DOI-BLM-NV-C010-2010-0010-EAEATerra-Gen Power LLCDixie Valley Geothermal AreaBLMBLM Carson City District OfficeBLM Stillwater Field OfficeBLMBLMGeothermal/ExplorationDownhole Techniques
      Well Testing Techniques
      Drilling Techniques
      Exploration Drilling
      DOI-BLM-NV-C010-2012-0029-EAEAOrmat Technologies IncTungsten Mountain Geothermal AreaBLMBLM Carson City District OfficeBLM Stillwater Field OfficeBLMBLMGeothermal/Well FieldDownhole Techniques
      Well Testing Techniques
      Drilling Techniques
      Exploration Drilling
      DOI-BLM-NV-W010-2012-0057-EAEABrady Power PartnersBrady Hot Springs Geothermal AreaBureau of Land ManagementBLM Winnemucca District OfficeBLM Humboldt River Field OfficeBureau of Land ManagementBureau of Land ManagementGeothermal/Well FieldDownhole Techniques
      DOI-BLM-NV-W010–2012–0005–EAEATerra-Gen Power LLCNew York Canyon Geothermal AreaBLMBLM Winnemucca District OfficeBLM Humboldt River Field OfficeBLMBLMGeothermal/Power Plant
      Geothermal/Grid Connection
      Geothermal/Well Field
      Downhole Techniques
      Development Drilling


      <metadesc> About Downhole Techniques, a geothermal exploration technique, including areas of use. </metadesc>