Exxonmobil Upstream Research Company

John W Snedden

Neal L Adair

Mary Ellen Meurer

Peter J Vrolijk

David M Chorneyko

Charlie S Kim

Michael L Sweet

Lawrence T Sumpter

Method for quantitatively assessing connectivity for well pairs at varying frequencies. A time series of measurements () is chosen for each of the two wells such that the particular measurements will be sensitive to subsurface connectivity if it exists (). The two time series may then be pre-processed by resampling to time intervals commensurate with response time between the two wells (), detrending the measurements (), and detecting and eliminating spiking noises (). Then the time series are transformed to the frequency domain where coherence and phase between the two series are compared for varying frequencies (). This comparison is used to make a determination of connectivity.

Method for quantitatively assessing connectivity for well pairs at varying frequencies

Methods, computer-readable mediums, and systems analyze hydrocarbon production data from a subsurface region to determine geologic time scale reservoir connectivity and production time scale reservoir connectivity for the subsurface region. Compartments, fluid properties, and fluid distribution are interpreted to determine geologic time scale reservoir connectivity and production time scale reservoir connectivity for the subsurface region. A reservoir connectivity model based on the geologic time scale and production time scale reservoir connectivity for the subsurface region is constructed, wherein the reservoir connectivity model includes a plurality of production scenarios each including reservoir compartments, connections, and connection properties for each scenario. Each of the production scenarios is tested and refined based on production data for the subsurface region.

Dynamic connectivity analysis

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Leander, TX, United States of America

John W Snedden