- Summary of Analytical Results
This report contains the results of Fluid Inclusion Stratigraphy for a well penetrating the Tertiary section of Southern Louisiana and was prepared for General Distribution by Fluid Inclusion Technologies, Inc. Graphical representation of the FIT analytical results together with client-supplied electronic well logs are presented below. Particularly noteworthy features regarding the FIT analysis of this well include:
- Within the analyzed section (10020-19170 ft), the interval above approximately 14580 ft is characterized by detectable gas and liquid-range petroleum species within fluid inclusions. Generally, signals encompass C1-C8, with rare responses to C12. Strongest responses within this interval are obtained on samples from shallower than 12000 ft. Thin sections from 10080 ft, 13050 ft and 14580 ft contain rare, high gravity, liquid petroleum bearing fluid inclusions; possibly representing rich condensate or volatile oil. No emplacement timing relationships were obtained on these rare occurrences.
- The interval from approximately 14500 ft to 17340 ft contains detectable gas and liquid-range petroleum species within fluid inclusions (generally to C8), but is distinct from the shallower section in that it is relatively enriched in low molecular weight gas (C1-C2) and other water-soluble species including benzene, toluene and acetic acid. Strongest petroleum responses are obtained at 15000-15400 ft and 17100-17400 ft. Strongest responses on the water-soluble species occur at 14580 ft, 15480-15690 ft, 16350 ft, 16500-17200 ft and 17340 ft. The presence of enhanced water-soluble hydrocarbons is interpreted as indicating proximity to reservoired petroleum, including, possibly, pay zones within the penetrated section. The presence of acetic acid as one of the anomalous species, coupled with detectable liquid-range petroleum species, suggests a liquid component to the reservoired petroleum (probably condensate in this case). Thin sections from 15660 ft and 17160 ft contain blue-fluorescent petroleum inclusions, and residual fluorescent petroleum and stain within shale microporosity. Fine-grained pyrite is common.
- The section from 17500 ft to 18100 ft is characterized by low to non-detectable concentrations of petroleum species.
- The section from 18100 ft to 18400 ft is characterized by detectable gas and liquid-range petroleum species (to C8) within fluid inclusions.
- The section from 18570 ft to 19170 ft is characterized by very strong responses on low molecular weight gas (C1-C2) and other water-soluble species including benzene, toluene and acetic acid. As with the shallower section, the co-occurrence of water-solubles (including acetic acid) and gas and liquid-range petroleum inclusions suggests proximity to reservoired liquid petroleum (probably condensate) or potential pay zones within the borehole. Thin sections from 18570 ft, 18660 ft, and 19170 ft contain blue-fluorescent petroleum inclusions and residual fluorescent petroleum and stain within shale microporosity. Fine-grained pyrite is common.
- Within the analyzed section, potential fluid compartment boundaries (e.g., seals or fluid contacts) are interpreted at 12000 ft, 14500 ft, 16800 ft, 17500 ft, 18100 ft, and 18600 ft.
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