Actions for Deep-burial diagenesis. Annual progress report, 1982-1983

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Deep-burial diagenesis. Annual progress report, 1982-1983

Author
Friedman, G. M.
Published
United States : [publisher not identified], 1983
Springfield, Va.: National Technical Information Service, [approximately 1983]
Physical Description
microfiche : negative ; 11 x 15 cm

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Summary
This program emphasizes the effects of deep burial on creation and elimination of porosity with depth and on changes in textures of carbonate rocks. Two parallel lines of investigation have been employed: (1) experimental compaction tests at various temperatures, pressures, and interstitial fluid compositions of natural carbonate sediments; and (2) petrographic and mechanical-log analysis of carbonate rocks from boreholes of some of the world's deepest carbonate hydrocarbon (gas) reservoirs. In compacted ooids in the presence of distilled water neomorphic microspar of calcite pseudomorphically replaced aragonite, with survival in places, in the ooids of parts of their original fabric. Most of the ooids, replaced neomorphically, retained concentric rims however. Ooids and skeletal particles compressed at 150, 200 and 250/sup 0/C and at 1.5 and 2.4 kilobars, consistent with burial depth of 6 and 9 km showed appreciable volume reduction. Skeletal particles showed greater response to pressures than ooids and coarser particles lost more void space than finer ones. Except for crushed and split particles which increase at higher temperatures, other kinds of breakage are unrelated to temperature effects. Our study of boreholes reveals that among the world's deepest producing hydrocarbon (gas) reservoirs in the Anadarko Basin of Oklahoma porosity in carbonates is chiefly confined to dolomites.
Report Numbers
DE83009378; DOE/ER/10921-T1
Other Subject(s)
Collection
NTIS collection.
Note
DOE contract number: AC02-81ER10921
OSTI Identifier 6519926
Research organization: Rensselaer Polytechnic Inst., Troy, NY (USA). Dept. of Geology.
View MARC record | catkey: 47329875