Conybeare C. Geomorphology of Oil and Gas Fields in Sandstone Bodies

Elsevier, 1976. — 353 p. — ISBN: O-444-41398-7.This book is essentially about stratigraphic traps for oil and gas. Many of the examples discussed are geomorphologic features having inherent closures without any secondary structural element; others are primarily geomorphologic features modified by folding or faulting t o produce local closures. The first category comprises traps that are purely stratigraphic, although the accumulation
of hydrocarbons may have been assisted by regional or local tilting of the strata, or by deformation caused by compaction of the underlying sediments. The second category, which includes a much larger number of known examples, comprises structural-stratigraphic traps. Many of these traps have proved t o be elusive, particularly those of the first category which commonly defy detection by seismic methods. In some cases, discovery has been accidental, and further exploration t o delineate the accumulation has been empirical.
The purport of this book is to briefly present examples illustrating the main geological characteristics of geomorphologic features that have controlled or influenced the accumulation of oil and gas in particular fields, with a view to using such examples as models in the search for new fields in sandstone bodies. Many of the examples presented have been so well documented that they stand as classic examples of stratigraphic fields in which oil and gas accumulations are controlled by geomorphologic features. Others have yet t o be defined unequivocally, but are included as additional references to assist in the interpretation of geophysical and sub-surface geological data.River channels
Distributary and delta-fringe sand
Barrier and other offshore bars
Regressive marine shoreline sand
Transgressive marine shoreline deposits
Submarine valleys
Tidal current sand bodies
Alluvial fans and sheets
Eolian sand