November Bulletin
November Bulletin is available for you with more NEW features:
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- Audio abstracts are also available! (See below)
As always, we look forward to .
IN THIS SPECIAL ISSUE:
Structurally controlled hydrothermal dolomite reservoir facies: An overview
Hydrothermal dolomitization typically occurs under shallow burial conditions by saline fluids with a temperature and pressure higher than that of the host formation, commonly limestone. Recognition and exploration of these reservoirs, which are major producers in North America, continues to expand. Read more… Or listen to the audio abstract now.
Origin and reservoir characteristics of Upper Ordovician Trenton-Black River hydrothermal dolomite reservoirs in New York
Recently discovered gas fields within the laterally discontinuous dolomites of the Black River Group, New York State, escaped previous detection due to an unconventional location around fault-bounded structural lows. Additional fields may be discovered, in this and similar settings, through application of appropriate techniques. Read more… Or listen to the audio abstract now.
Evidence against the Dorag (mixing-zone) model for dolomitization along the Wisconsin arch-A case for hydrothermal diaganesis
Field, petrologic, and geochemical evidence indicates that carbonates near the Wisconsin arch, the type locality for mixing-zone (Dorag) dolomitization in ancient rocks, are genetically linked to the MVT and K-silicate minerals of the region and were produced by a Late Devonian-Mississippian regional hydrothermal system. Read more… Or listen to the audio abstract now.
Pervasive dolomitization with subsequent hydrothermal alteration in the Clarke Lake gas field, Middle Devonian Slave Point Formation, British Columbia, Canada
Evidence and criteria for the recognition of hydrothermal alteration of dolostones is presented and applied to the Clarke Lake gas field, British Columbia, to demonstrate that many dolomites previously interpreted as hydrothermal are likely hydrothermal alteration products of older dolostones formed in colder fluids. Read more… Or listen to the audio abstract now.
Fractured hydrothermal dolomite reservoirs in the Devonian Dundee platform carbonates, Deep Panuke reservoir, Nova Scotia, Canada
Secondary porosity within dolostones in the Deep Panuke field of the Abenaki Formation, offshore Nova Scotia, resulted from post-stylotization dissolution of dolomite in a deep-burial setting. Fluids, either calcium-rich or highly acidic, migrated through fault and fracture systems related to reactivated basement faults. Read more… Or listen to the audio abstract now.
Three-dimensional seismic-based definition of fault-related porosity development Trenton-Black River interval, Saybrook, Ohio
3-D seismic and wireline data are integrated to document the relationship between porosity development and fault geometry at Saybrook field, Ohio. Predicted porosity is related to the structural framework of the field and used as a proxy for dolomite distribution.. Read more… Or listen to the audio abstract now.
Burial dolomitization and dissolution of Upper Jurassic Abenaki Formation of the central Michigan Basin
Carbonate reservoirs within the Mississippian Madison Formation of Montana and Wyoming contain abundant fractures and breccias produced by explosive injection of fluid during crustal shortening. Rapid precipitation of carbonate cement reduced porosity and permeability resulting in locally unpredictable horizontal flow barriers and compartments. Read more… Or listen to the audio abstract now.
Tectonic-hydrothermal brecciation associated with calcite precipitation and permeability destruction in Mississippian carbonate reservoirs, Montana and Wyoming
Chemical analyses of oil, gas, and condensate recovered from upper Miocene sandstones in the deep-water Kutei Basin, Indonesia, indicate a land-plant source. Laminar coaly fragments, the dominant organic constituent, are interpreted to be derived from leaves. Read more… Or listen to the audio abstract now.