Seismic-dependent Facies, Porosity, and Permeability Modeling

Rajendra K. Shrestha(1), Manfred Boeckmann(2), Mo-Kiang Wang(1) and Sohail Faruqi(1)

(1) Veritas DGC, Inc., USA. (2) RWE-DEA Exploration & Development, Germany.

Contacts: Rajendra_Shrestha@veritasdgc.com (Rajendra K. Shrestha)


Abstract

The 3D reservoir property models were built to aid the reevaluation and development of the Upper Permian Roliegend Gas Field in northwestern Germany.

Deterministic and stochastic seismic inversions were performed and acoustic impedance models were constructed by integrating the seismic and well data. The high-resolution stochastic inversion impedance model was utilized as the soft data for property modeling.

The reservoir property modeling of the study area was accomplished in three stages: a) build a facies model based on facies proportion curves from histograms of facies-dependent acoustic impedance data and the impedance model, b) create porosity models using facies model constrained by acoustic impedance data, and c) construct permeability models using the facies based porosity-permeability cloud transform. Reservoir models of the Wustrow, Ebstorf and Dethlingen zones were built separately. At the end, the individual models were vertically stacked to construct the unified 3D models of facies, porosity, and permeability including all the three reservoir zones.


raeg2003@tansa.kumst.kyoto-u.ac.jp
Last modified: Mon Sep 9 15:33:51 JST 2002