Use of effective properties for characterisation of a naturally fractured reservoir in East Venezuela

D.W. Boardman, R. Porjesz, J.R. Cabrera
1999 Proceedings of Latin American and Caribbean Petroleum Engineering Conference   unpublished
TX 75083-3836, U.S.A., fax 01-972-952-9435. Abstract This paper present the results of an integrated reservoir characterisation study, and the methodology used to confirm the existence of an additional reservoir drive mechanism based on natural fractures, which has been used to explain the significant discrepancies between material balance and volumetric estimates of STOIIP. A detailed core-based sedimentological study has defined the depositional environment and facies connectivity. Core, log,
more » ... drilling and production analyses have been integrated to provide information on the natural fracture network, and geomechanical interpretation has been used to prove that the fractures seen in core are natural, and to explain the impact of regional stress variations on fracture properties and flow performance. Effective parameters have been estimated to represent the fracture network in the simulation model. A non-stationary geostatistical simulation has been used to model the reservoir facies distributions, and the static model has been conditioned with interpreted DST permeability, to represent effective flow properties. A full field history matched simulation model has been used to confirm STOIIP, and to develop an exploitation strategy.
doi:10.2523/53881-ms fatcat:eikvvkfqwzdolmumc7aejigvxq