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Well Configuration Design for Water Alternating Gas

Mohd Ashraf Bin Nor Azrol, Mohd Ashraf Bin Nor Azrol (2012) Well Configuration Design for Water Alternating Gas. Universiti Teknologi Petronas. (Unpublished)

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Abstract

Water Alternating Gas (WAG) is one of the popular EOR techniques to displace oil after natural depletion. Essentially, WAG is a sequential injection of water and gas in specific ratio to sweep oil from the pores. It is a popular technique because of availability of water and gas as well as cheaper cost than chemical injection technique. More importantly, this project discovered that there is a relationship between well configuration design and efficiency of WAG in a 5 spot injection pattern. For example, the ideal WAG ratio of 1:1 that supposedly allows piston-like displacement is not always efficient for all well configurations. Only a horizontal injector and a vertical producer configuration gave the highest oil recovery while the other configurations did not. Ultimately, this project proposed approaches for both new field and mature field. For a new field, one might want to consider well configuration that gives the highest oil recovery to be drilled. On the other hand, for a mature field, the well configuration is already present. Therefore, it is proposed that a WAG scheme that yield the highest oil recovery for that well configuration design should be used.

Item Type: Final Year Project
Academic Subject : Academic Department - Petroleum Geosciences - Petroleum Engineering - Reservoir management - Reservoir monitoring and surveillance
Subject: T Technology > TN Mining engineering. Metallurgy
Divisions: Geoscience and Petroleum Engineering
Depositing User: Users 2053 not found.
Date Deposited: 08 Mar 2013 10:22
Last Modified: 25 Jan 2017 09:40
URI: http://utpedia.utp.edu.my/id/eprint/5862

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