Implementation of a Reservoir Management Program
- G.C. Thakur (Chevron U.S.A. Inc.)
- Document ID
- Society of Petroleum Engineers
- SPE Annual Technical Conference and Exhibition, 23-26 September, New Orleans, Louisiana
- Publication Date
- Document Type
- Conference Paper
- 1990. Society of Petroleum Engineers
- 1.10.1 Drill string components and drilling tools (tubulars, jars, subs, stabilisers, reamers, etc), 3.2.3 Hydraulic Fracturing Design, Implementation and Optimisation, 2.2.2 Perforating, 2.4.3 Sand/Solids Control, 5.1 Reservoir Characterisation, 4.6 Natural Gas, 1.6 Drilling Operations, 1.6.9 Coring, Fishing, 4.1.5 Processing Equipment, 5.3.2 Multiphase Flow, 5.5 Reservoir Simulation, 4.3.4 Scale, 5.5.8 History Matching, 5.6.4 Drillstem/Well Testing, 5.4.1 Waterflooding, 3 Production and Well Operations, 1.2.3 Rock properties
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Reservoir management can be defined as the judicious use of various means available to maximize benefits or economic recovery from a reservoir. Although there are numerous reasons why reservoir management programs sometimes do not succeed, perhaps the most important reason is the lack of perhaps the most important reason is the lack of team effort in developing and implementing such programs. A step-by-step procedure to improve programs. A step-by-step procedure to improve success in this effort is outlined.
Two distinct approaches have been utilized: one is a comprehensive approach for large reservoirs and the other is a problem solving approach for small (and/or less profitable) reservoirs. Although the approaches are philosophically quite different, each has produced useful results. It is not necessary for all reservoirs to have the most comprehensive management program; rather, it should be dictated based upon need, keeping the cost-benefit analysis in mind.
Reservoir Management has received significant interest within the petroleum industry in recent years. Although reservoir management had been in practice in various forms since the 1930s, it has practice in various forms since the 1930s, it has gone through evolutionary stages. Before 1970, reservoir engineering and reservoir management were considered synonymous by many. However, during the 1970s and 1980s, considerable changes in this philosophy were instigated, and the value of synergism between engineering, geology, and geophysics was realized. Note that although these alterations were beneficial, reservoir management still did not fully value the merits of other disciplines, e.g. production operations, drilling, and non-petroleum engineering functions.
Recently the management of reservoirs has been explained as judicious use of various mean available to maximize benefits from a reservoir. Wiggins and Startzman describe reservoir management as "that set of operations and decisions by which a reservoir is identified, measured, produced, developed, monitored, and evaluated from produced, developed, monitored, and evaluated from its discovery through depletion and final abandonment. " Also, they explain it as the application of state-of-the-art technology to a reservoir system within a given management environment. In summary, the function of reservoir r management is to provide facts, information, and knowledge necessary to control operations and obtain the maximum possible economic recovery from a reservoir.
The purpose of this paper is to provide an overview of reservoir management, discuss why some reservoir management programs fail, and offer alternative methods to manage reservoirs utilizing two case studies.
WHY DO SOME RESERVOIR MANAGEMENT PROGRAMS FAIL? PROGRAMS FAIL? There are numerous reasons why reservoir management programs have failed. Some are listed below:
A) It was not considered as a part of a coupled system consisting of wells, surface facilities, and the reservoir. Not all of these were emphasized in a balanced way. For example, one could do well in studying the fluids and their interaction with rock, i.e. reservoir engineering; but, by not considering the well and/or the surface system design, the recovery of oil and/or gas was not optimized.
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