Method an system of geophysical exploration

A system and method of geophysical exploration is described whereby composition logs of the minerals comprising the formations surrounding a wellbore can be obtained. Samples of the formations surrounding a wellbore are obtained at selected intervals along the length of the wellbore. Each of the cor...

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Bibliographic Details
Main Authors SONDERGELD; CARL H, RAI; CHANDRA S
Format Patent
LanguageEnglish
Published 26.02.1991
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:A system and method of geophysical exploration is described whereby composition logs of the minerals comprising the formations surrounding a wellbore can be obtained. Samples of the formations surrounding a wellbore are obtained at selected intervals along the length of the wellbore. Each of the core samples is irradiated with electromagnetic radiation and a spectral response signal, representative of the electromagnetic response of each sample to the electromagnetic radiation is recorded. Peaks in the spectral response signals are located and correlated with minerals exhibiting similar electromagnetic characteristic response peaks. Since the samples were obtained from known depths within the wellbore, a composition log of the minerals comprising the formations surrounding the wellbore can be prepared displaying the minerals identified as a function of depth in the wellbore.
Bibliography:Application Number: US19880264926