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GEOCHEMICAL SOLUTIONS INTERNATIONAL INC. (GSI) has completed a geochemical study of oils from the basins along the Equatorial margin of Brazil designed to identify and compare the petroleum systems that have contributed to accumulations in this important area. The studied basins include Foz do Amazonas, Pará Maranhão, Barreirinhas, Ceará and Potiguar. Approximately 250 crude oils representing the major fields and producing horizons have been analyzed using state-of-the-art oil fingerprinting techniques to evaluate the major factors governing oil quality and quantity including: (1) source facies, (2) thermal maturity, (3) distance of migration from source to trap, (4) extent and timing of biodegradation, and (5) degree of oil mixing.
We have also completed a geochemical characterization of potential source rock samples from the Foz do Amazonas, Pará Maranhão, Ceará, and Marajo basins of equatorial Brazil. Samples included in this study represent rift, transition, drift and passive margin sections. This study is designed to evaluate the organic richness, hydrocarbon-generating potential, oil proneness, and thermal maturity level of all potential source rock intervals in each of the four basins in order to assist exploration efforts in the less developed regions. This was accomplished by the detailed geochemical analysis of approximately one hundred and fifty (150) well cuttings and/or core samples. These samples were selected based on total organic carbon (TOC) data from more than 8,500 samples representing more than 180,000 m of section from more than 80 wells.
Crude oil and source rock analyses have been performed at BRI-DGSI laboratories in Houston. The analytical data and the associated interpretative report are available for immediate delivery.
Results of the study are presented in both analytical and interpretive formats to insure that all findings are accessible to explorationists and research personnel. All geochemical data will be provided in hard copy and in digital format in a database contained on CD, which includes a proprietary data browser to facilitate access. A synthesis and interpretation of all information is presented in a series of comprehensive final reports including oil-oil and oil-source rock correlations, oil quality, hydrocarbon source potential, oil proneness and thermal maturity.
For interested companies, basin-specific quantitative modeling studies can be performed as a supplementary product.
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