The Use of Models in Reservoir Engineering Studies - An Appraisal
- Walter Rose (Texas Petroleum Research Committee) | Ralph E. Gilchrist (Texas Petroleum Research Committee)
- Document ID
- Society of Petroleum Engineers
- Fall Meeting of the Petroleum Branch of AIME, 3-5 October, Oklahoma City, Oklahoma
- Publication Date
- Document Type
- Conference Paper
- 1951. Original copyright American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc. Copyright has expired.
- 4.1.5 Processing Equipment, 2.4.3 Sand/Solids Control, 5.1 Reservoir Characterisation, 5.7.2 Recovery Factors, 5.6.2 Core Analysis, 4.3.4 Scale, 1.6.9 Coring, Fishing, 5.8.8 Gas-condensate reservoirs, 4.6 Natural Gas, 5.5.2 Core Analysis, 5.3.1 Flow in Porous Media, 4.1.2 Separation and Treating
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An examination is made of the subject matter of the science of reservoirengineering. It is seen that of the several remaining unsolved aspects, theestimation of reserves and recovery presents a problem of practical importance.This problem, as well as many others encountered in the study of reservoirengineering, is of such complexity that rigorous analytical solution is notpossible. In special cases approximate solutions are possible but these usuallygive information of only qualitative significance. The conclusion is thus madethat study of these complex reservoir engineering problems by models might bean acceptable substitute procedure.
Therefore, the basic postulates of dimensional analysis are reviewed, andthe theory of model construction is described. Model types are classified asphysical and analog models, scaled and unscaled models, and exact andverification models. Examples of these types are given, followed by a generaldiscussion of the application of models for the solution of reservoir problems.Reference is also made to the limitations of model work and to the practicaldifficulties encountered in the laboratory construction of models. Finally, anew type of model called the fluid mapper, which heretofore has not beendescribed in the literature of reservoir engineering, is discussed both withregard to the underlying theory and with regard to possible specificapplications.
The general conclusion is drawn that some of the advantages of model studyhave been largely overlooked by reservoir engineers. Specifically, it isconcluded that model study provides the most suitable procedure for evaluationof reserve and recovery factors. It is also concluded that the fluidmapper model technique offers promise of solving certain reservoir engineeringproblems which heretofore have defied analytical description.
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