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Author Spichak, V. ♦ Zakharova, O. ♦ Rybin, A.
Source CiteSeerX
Content type Text
File Format PDF
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Electromagnetic Data Result ♦ Neuronet Analysis ♦ Minimum Level ♦ Surface Observation ♦ Indirect Electromagnetic Geothermometer ♦ Practical Application ♦ Extreme Condition ♦ 6-8 Temperature Log ♦ Northern Tien Shan ♦ Optimal Technique ♦ Temperature Log ♦ New Method ♦ Relative Error ♦ Well Temperature ♦ Sub-surface Temperature ♦ Mt Measurement ♦ Traditional Geothermometers ♦ Extrapolation Mode ♦ Contactless Remote Temperature Estimation ♦ Prior Geological Information ♦ Mt Field ♦ Temperature Estimation ♦ Temperature Data ♦ Remote Temperature Estimation Error ♦ Whereas Availability ♦ Precise Temperature Prediction ♦ Magnetotelluric Sounding ♦ Supercritical Geothermal Reservoir
Description A new method of the temperature estimation in the earth's interior is developed, which is based on using the measurements of magnetotelluric (MT) field at the ground. Basing on the neuronet analysis of MT and temperature data measured at the Bishkek geodynamical testing site in the northern Tien Shan, a feasibility of indirect electromagnetic geothermometer is substantiated. An optimal technique for MT measurements and involvement of temperature logs available is developed. It provides a reduction of the remote temperature estimation errors down to their minimum level. It is shown that the use of 6-8 temperature logs for calibration of electromagnetic data results in 12 % relative error of the temperature estimation, whereas availability of prior geological information about the region under study makes it possible to decrease this error furthermore. Practical application of this method will enable one, first, to refine the temperature estimates in cases when the amount of temperature logs available is insufficient; second, to perform more precise temperature prediction in extrapolation mode; third, to monitor the well temperature basing on surface observations of MT field and, at last, to carry out contactless remote temperature estimation in wells with extreme conditions (in particular, typical for supercritical geothermal reservoirs) unsuitable for traditional geothermometers.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Proceeding
Publisher Date 2007-01-01
Publisher Institution Stanford University