Optimization of Injection Scheduling in Geothermal Fields
Abstract/Contents
- Abstract
- This study discusses the application of algorithms developed in Operations Research to the optimization of brine reinjection in geothermal fields. Reinjection optimization problem is broken into two sub-problems: (1) choosing a configuration of injectors from an existing set of wells, and (2) allocating a total specified injection rate among chosen injectors. The allocation problem is solved first. The reservoir is idealized as a network of channels or arcs directly connecting each pair of wells in the field. Each arc in the network is considered to have some potential for thermal breakthrough. This potential is quantified by an arc-specific breakthrough index, based on user-specified parameters from tracer rests, field geometry, and operating considerations. The sum of values for all arcs is defined as the fieldwide breakthrough index, B. Injection is optimized by choosing injection wells and rates so as to minimize B subject to constraints on the number of injectors and the total amount of fluid to be produced and reinjected. The study presents four computer programs which employ linear or quadratic programming to solve the allocation problem. In addition, a program is presented which solves the injector configuration problem by a combination of enumeration and quadratic programming. The use of the various programs is demonstrated with reference both to hypothetical data and an actual data set from the Wairakei Geothermal Field in New Zealand.
Description
| Type of resource | text |
|---|---|
| Date created | May 1987 |
Creators/Contributors
| Author | Lovekin, James |
|---|---|
| Primary advisor | Horne, Roland N. |
| Degree granting institution | Stanford University, Department of Petroleum Engineering |
Subjects
| Subject | School of Earth Energy & Environmental Sciences |
|---|---|
| Subject | Stanford Geothermal Program |
| Genre | Thesis |
Bibliographic information
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Preferred citation
- Preferred Citation
- Lovekin, James. (1987). Optimization of Injection Scheduling in Geothermal Fields. Stanford Digital Repository. Available at: https://purl.stanford.edu/mw351dy6792
Collection
Master's Theses, Doerr School of Sustainability
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- brannerlibrary@stanford.edu
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