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Titolo:
The effect of allochthonous salt evolution and overpressure development onsource rock thermal maturation: a two-dimensional transient study in the northern Gulf of Mexico Basin
Autore:
Stover, SC; Weimer, P; Ge, SM;
Indirizzi:
Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA Univ Colorado BoulderCO USA 80309 , Dept Geol Sci, Boulder, CO 80309 USA Univ Colorado, Dept Geol Sci, Energy Minerals & Appl Res Ctr, Boulder, CO 80309 USA Univ Colorado Boulder CO USA 80309 & Appl Res Ctr, Boulder, CO 80309 USA
Titolo Testata:
PETROLEUM GEOSCIENCE
fascicolo: 3, volume: 7, anno: 2001,
pagine: 281 - 290
SICI:
1354-0793(200108)7:3<281:TEOASE>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
DRIVEN GROUNDWATER-FLOW; OF-MEXICO; MODEL; LOUISIANA; DOMES;
Keywords:
Gulf of Mexico; thermal alteration; maturation; salt flow; evaporite deposition; overpressured reservoir;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Stover, SC BP, UTG Geol Petr Syst, 200 Westlake Pk Blvd,WL4,Off 832, Houston, TX 77079 USA BP 200 Westlake Pk Blvd,WL4,Off 832 Houston TX USA 77079 79 USA
Citazione:
S.C. Stover et al., "The effect of allochthonous salt evolution and overpressure development onsource rock thermal maturation: a two-dimensional transient study in the northern Gulf of Mexico Basin", PETR GEOSCI, 7(3), 2001, pp. 281-290

Abstract

Sequential two-dimensional forward modelling of source rock maturation along a north-south 600 km megaregional profile across the northern Gulf of Mexico Basin illustrates the coupled influence of allochthonous salt evolution and overpressure development on source rock maturation. Model results indicate that allochthonous salt evolution strongly affected local and regional source rock maturation, while overpressure development had a minor impact. Within the lower slope portion of the profile (south of the Sigsbee escarpment to the Tabular Salt/Minibasin province), localized thermal lows associated with salt stock development locally retarded the maturation of sourcerocks, while the slow development of overpressures effected little influence on the maturation. Within the centre of the profile (offshore Louisiana shelf, however, the evolution of allochthonous salt sheets and shallow saltstructures locally and regionally lowered the oil generation window. The timing of overpressures in this region, related to the progradation of the Cenozoic marine depocentre, may have accelerated the maturation of middle Eocene source rocks, although the deeper Turonian source rocks had reached maturation at the time of greatest overpressure development. In the northern portion of the profile (southern Louisiana), the Terrebonne salt sheet lowered the oil generation window and retarded the maturation of the middle Eocene source rocks.

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Documento generato il 27/09/20 alle ore 01:00:56