Reservoir facies zonation using wireline logs
Journal Article
·
· Am. Assoc. Pet. Geol., Bull.; (United States)
OSTI ID:6261694
Sedimentary rocks can be described and distinguished from others not only by their lithology, geometry, sedimentary structures, and fossil content but also by their overall response on the electric logs - their electrofacies. FACIOLOG processing zones together those sections of a lithological sequence which have a comparable suite of electric log responses to give an electrofacies zonation. Geologists have traditionally used electric logs as a basis for zonation when drawing up composite (lithological) columns. FACIOLOG processing now offers the potential of treating all the logs, including the dipmeter, on an objective and quantitative basis. Because of the usually good match between the electrofacies zonation and the lithological zonations in cored sequences (especially in siliclastic sequences), FACIOLOG processing can be used to extrapolate the results of core analysis into those sections in the well where there is no core. Presenting all the logs together and having the additional advantage of the quantitative electrofacies zonation is clearly an aid to well-to-well correlation. With data banks, specific electrofacies zones may now be automatically traced across complete reservoirs. The FACIOLOG approach is designed not to compete with conventional facies analysis but to put electric logs into a framework which the geologist can easily intergrate with his own studies and thereby squeeze the maximum amount of geological information out of them.
- Research Organization:
- Schlumberger, London, England
- OSTI ID:
- 6261694
- Journal Information:
- Am. Assoc. Pet. Geol., Bull.; (United States), Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Vol. 67:3; ISSN AAPGB
- Country of Publication:
- United States
- Language:
- English
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