Washover Fans: A Modern Geomorphologic Analysis and Proposed Classification Scheme To Improve Reservoir Models

摘要: Abstract Washover fan deposits are part of a much larger system highly heterolithic barrier and shoreline-margin which form notoriously hard to produce hydrocarbon reservoirs. This survey modern morphologies identifies common geometries, considers the preservation potential range probable geometries facies in subsurface datasets outcrops, aims improve recovery barrier-island reservoir systems. We use satellite imagery conduct spatial analysis 118 fans quantify attributes fans, including throat width, intrusion length, area, width. A new classification scheme for is proposed that refines current model. In this classification, initially divided into channelized non-channelized fans. Channelized subdivided according location primary deposition: depocenter or lagoonal depocenter. Non-channelized based on morphology: dissipative, lobate, apron-sourced. Quantitative cross-plots morphologic parameters analyzed define geometric relations morphologies. The probability identifying discussed. Our results indicate most commonly used model washover fan, 52 km2 St. Joseph Island anomalous does not reflect sizes suggest our be instead capture Although study encountered non-channelized, line-sourced, lobate with an area less than 1 more frequently any other types exhibit diverse morphologies; therefore entire should considered when interpreting exploration data looking identify subsurface.