One hundred fractured reservoirs from around the world were evaluated to determine how
ultimate recovery was affected by inherent reservoir and fluid properties, such as porosity …

In this paper we address two fairly difficult problems. The first is the problem of matching
production data (in this case, production and injection rates) by adjustment of the locations …

Numerical simulation integrates extensive geoscience and engineering data with complex
process models to examine reservoir behavior. Reservoir studies commonly consider many …

The process of conditioning the geological or the static model to production data is typically
known as history matching (HM). The economic viability of a petroleum recovery project is …

This paper describes the results of a two-year EC-sponsored project which uses new
information provided by repeated seismic acquisitions (4D seismic data) jointly with …

For large-scale history-matching problems, optimization algorithms which require only the
gradient of the objective function and avoid explicit computation of the Hessian appear to be …

The use of time-lapse data, or 4D seismic, in conjunction with production data in computer
aided history matching of reservoir models requires that the various types of data are …

In reservoir characterization, the value of each piece of data does not lie in its isolated use,
but rather in the value it adds to the analysis when integrated with other data. Earth scientists …

Abstract 4D seismic or time-lapse seismic is the process of repeating 3D seismic surveys
over a producing reservoir to monitor changes in saturation and pressure. Repetition of …

Reservoir modeling aims at understanding static and dynamic components of the reservoir
in order to make decisions about future surface operations. The practice of reservoir …