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 …

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 …

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 …

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 …

Gradient-based optimization techniques are increasingly adopted by oil industries for
computer-aided history matching because of the great timesaving they can offer over …

Our purpose is to evaluate the benefit of using time-lapse seismic in addition to production
history for reservoir characterization. A new inversion methodology, based on the gradual …