Seismic Signature Of The Lower Mannviile Channel Sandstones At Hayter Field, Eastern Alberta, Canada


The principal reservoir facies at Hayter Field, the Lower Mannnville sandstones (Figure 1), are preserved as a tabular body of varying thickness that accumulated in a regional low of eroded Paleozoic rock and are overlain by Lower Mannviile siltstones and shales. These sandstones are locally up to 50 m thick, with pay in some wells on the order of 20 m. They depositionally thin updip of the field and are considered to be stratigraphically trapped. As a result of the differential compaction of the encompassed sediment, the Lower Mannviile drapes across the thicker sandstones. The Lower Mannviile is underlain by higher velocity Paleozoic strata and overlain by lower velocity Middle Mannviile sediment. Both of these interfaces generate relatively high amplitude events which effectively mask the internal reflection pattern. While modelling suggests that the amplitude of the reflection from the top of the Lower Mannviile (Lower Mannviile event) can vary as a function of shale/siltstone/sandstone ratios, gross sandstone thicknesses are better estimated from Lower Mannviile isopach and time-structural relief measurements.


Geosciences and Geological and Petroleum Engineering

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Article - Conference proceedings

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Publication Date

01 Jan 1998