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Caliper Log
BestPractices A single axis caliper provides a single di
A single axis caliper provides a single diameter at a specific chord across the borehole. A multi-axis caliper has multiple arms and can measure the diameter of the well bore in multiple locations simultaneously. This provides useful information as to the shape of the borehole and when run in conjunction with a orientation tool can give understanding to the stress orientation.
e understanding to the stress orientation.  +
DataAcquisition Caliper logs are usually measured mechanically, with only a few using ultrasonic devices which provide full azimuthal coverage with high resolution. The tools measure diameter at a specific chord across the well.  +
EstimatedCostHighUSD 300 centUSD (0.003 kUSD, 3.0e-6 MUSD, 3.0e-9 TUSD)  +
EstimatedCostLowUSD 40 centUSD (4.0e-4 kUSD, 4.0e-7 MUSD, 4.0e-10 TUSD)  +
EstimatedCostMedianUSD 78 centUSD (7.8e-4 kUSD, 7.8e-7 MUSD, 7.8e-10 TUSD)  +
EstimatedTimeHigh 0.00189 years (16.56 hours, 0.69 days, 0.0986 weeks, 0.0227 months)  +
EstimatedTimeLow 9.582478e-4 years (8.4 hours, 0.35 days, 0.05 weeks, 0.0115 months)  +
EstimatedTimeMedian 0.00126 years (11.04 hours, 0.46 days, 0.0657 weeks, 0.0151 months)  +
ExplorationCostPerMetric foot  +
ExplorationGroup Downhole Techniques +
ExplorationSubGroup Well Log Techniques +
ExplorationTimePerMetric job  +
FieldProcedures The geophysical/well logging service company conducts the down hole logging operation and produces both digital and hard copy logs. The Drilling contractor trips the drill pipe and bit and conditions the well bore for logging.  +
NEPAanalysis Well logging is a standard operation associated with the drilling permit approval and is included in the down hole analysis of the drilling program.  +
Name Caliper Log  +
OpenEI/PageDescription About Caliper Log, a geothermal exploration technique, including areas of use.  +
OpenEI/PageKeyword geothermal  + , exploration  + , techniques  + , Caliper Log  + , areas  +
Pitfalls An unstable well bore (sluffing, wash outs
An unstable well bore (sluffing, wash outs, etc) can be of concern in any well logging operation. In extreme condition, the loss of the logging tool down hole could possibly result in the loss of the hole and would require premature abandonment or the necessity to side track to complete the well drilling operation.
k to complete the well drilling operation.  +
References [http://www.glossary.oilfield.slb.com/Display.cfm?Term=caliper%20log Schlumberger Oilfield Glossary- Caliper Log]  +
TypeOf Well Log Techniques +
Has query
"Has query" is a predefined property that represents meta information (in form of a subobject) about individual queries and is provided by Semantic MediaWiki.
Caliper Log + , Caliper Log + , Caliper Log + , Caliper Log + , Caliper Log + , Caliper Log + , Caliper Log + , Caliper Log + , Caliper Log + , Caliper Log +
Has processing error
"Has processing error" is a predefined property provided by Semantic MediaWiki and represents errors that appeared in connection with improper value annotations or input processing.
Caliper Log + , Caliper Log +
Categories Exploration Techniques , Geothermal , Well Log Techniques , Caliper Log
Modification date
"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by Semantic MediaWiki.
20:03:43, 10 October 2013  +
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Caliper Log At Valles Caldera - Redondo Geothermal Area (Rowley, Et Al., 1987) + ExplorationTechnique
 
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