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Regional Studies of Environment of DepositionExploration for the accumulations of oil and natural gas is aided greatly by studies of the depositional environment in which these resources accumulate. Studies of the depositional environment of ancient carbonate and detritial sediments are generally carried out from continuous core and/or outcrop exposures where vertical successions of textures and sedimentary structure can be examined. However, in some areas of subsurface exploration, small rock samples such as cuttings or sidewall cores can be utilized evaluate the environment of deposition. This enhances the ability to predict areas of favorable hydrocarbon accumulations. Regional studies of environments of deposition include the geological analysis of existing rock samples, logs, and published literature to determine regional distribution of environments of deposition, diagenesis, and controls on production. Establish reservoir characteristics of producing and prospective formations. Data includes core descriptions of environment of deposition and diagenetic effects on porosity development. Thin section descriptions are integrated into interpretation of results. Total deliverables are dependent on size and scope of project and core material available. The scope of this evaluation includes detailed core descriptions with associated petrographic analysis. The objective is to develop an understanding of the depositional characteristics and their regional variation. The overprint of diagenesis on these depositional settings is also determined and related to reservoir quality. This understanding allows for a general understanding of the variations in reservoir quality on a localized and regional basis. Understanding the depositional and diagenetic changes spatially will aid in development strategies for the area. Petrophysical measurements on core samples (if available) is integrated with petrographic interpretation to determine causes for porosity and permeability variations and how these variations relate to deposition and diagenesis. Data output includes lithologic logs of described section with a written description of the effects of deposition and diagenesis on reservoir quality. Thin section analysis necessary for interpretation is in addition to this service cost. Contact GeoSystems
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