Huasna Field, Geographic Overview
The onshore Santa Maria Basin is a triangular shaped structural basin located north of Los Angeles in the state of California.
Sedimentation commenced when Lower Miocene strata were deposited during a period of regional crustal extension.
During much of the ensuing Miocene time the Monterey Formation was deposited, the major reservoir zone and only source rock in the basin.
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The Monterey Formation ranges in thickness from 1,000-4,000 feet.
Much of the oil in the Santa Maria Basin is trapped in the northwest trending faulted anticlines.
The oil is usually heavy and typically ranges from 10° to 20° API.
Matrix porosity is typically 10%- 35% but permeability within the matrix is negligible.
The recoverable oil is predominantly located in the fracture system for which the porosity ranges from 1%- 2% or less.
The Huasna Field is located in the northern portion of the Santa Maria Basin.
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