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Machine translation
1. (WO1980002053) METHOD OF CONTINUOUS LOGGING OF BOREHOLE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/002053    International Application No.:    PCT/SU1979/000118
Publication Date: 02.10.1980 International Filing Date: 28.11.1979
IPC:
E21B 21/08 (2006.01), E21B 47/00 (2012.01), E21B 49/00 (2006.01)
Applicants:
Inventors:
Priority Data:
2736516 27.03.1979 SU
Title (EN) METHOD OF CONTINUOUS LOGGING OF BOREHOLE
(FR) METHODE DE CONSIGNATION CONTINUE D"UN TROU DE FORAGE
Abstract: front page image
(EN)A method of continuous logging the borehole in the course of drilling with the use of drilling mud, comprising subjecting the drilling mud, which is fed into the borehole, to the unipolar electro-treatment with simultaneously measuring its redox-potential; the value thereof being maintained at an essentially permanent preset level The redox-potential value of the drilling mud emerging from the borehole is continuously measured and compared with the preset redox-potential value for the drilling mud to be fed into the borehole. Depending on their difference the mineralogical composition of the rocks adjoining the borehole is determined by way of comparison of the difference thus obtained with the known normal redox-potentials of minerals.
(FR)Une methode de consignation continue d"un trou de forage pendant le forage avec une boue de forage consiste a soumettre la boue de forage, qui est injecte e dans le trou de forage, a un traitement electrique unipolaire en mesurant simultanement son potentiel redox, dont la valeur est maintenue a un niveau essentiellement constant predetermine. La valeur du potentiel redox de la boue de forage sortant du trou de forage est mesuree en permanence et comparee a la valeur du potentiel redox predeterminee de la boue de forage injectee dans le trou de forage. En fonction de leur difference, la composition mineralogique des roches adjacentes au trou de forage est determinee par comparaison de la difference ainsi obtenue avec les potentiels redox normaux connus des mineraux.
Designated States:
Publication Language: Russian (RU)
Filing Language: Russian (RU)