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Efficiency of horizontal and vertical well patterns on the performance of micellar-polymer flooding

Title
Efficiency of horizontal and vertical well patterns on the performance of micellar-polymer flooding
Author
이근상
Keywords
Micellar-polymer flood; Horizontal well; Anisotropy; Injectivity
Issue Date
2012-03
Publisher
Canadian Research & Development Center of Sciences and Cultures
Citation
Energy Science and Technology, 2012, 3(1), P.38-44
Abstract
There is increasing interest in micellar-polymer flooding because of the need to increase oil production from depleted and waterflooded reservoirs. Using horizontal wells for injection and production in a micellar-polymer flood process, higher sweep efficiency is expected compared with the use of conventional patterns by vertical wells. However, the use of horizontal wells is very sensitive to the well pattern designed to operate the process. This paper presents an analysis of how the overall performance of a micellar-polymer flood process in anisotropic reservoirs is influenced by the well pattern using horizontal injector and producer in different configurations. A three-dimensional numerical simulator for fluid flow and mass transport is used to analyze the effectiveness of well combinations in micellar-polymer applications. The potential for a horizontal well application was assessed through different situations in combinations of injection and production wells and degree of reservoir anisotropy. Results from the study have demonstrated that significant amount of oil can be recovered additionally and injectivity was remarkably improved by utilizing a combination of horizontal wells. The improvement of injectivity through a horizontal injection well was higher when it was combined with horizontal producer parallel to the injector. The overall performances in anisotropic reservoirs strongly depend on the type of wells considered and the orientation of the horizontal wells with respect to the permeability directions. Combination of horizontal wells placed parallel to the low permeability direction yields the best performance. In high permeability ratio reservoirs, the presence of horizontal injectors is more significant in defining the efficiency of the micellar-polymer flood than the horizontal producers.
URI
http://www.cscanada.net/index.php/est/article/view/2348http://repository.hanyang.ac.kr/handle/20.500.11754/69597
ISSN
1923-8460; 1923-8479
DOI
10.3968/j.est.1923847920120301.162
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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