Comparative analysis of remaining oil saturation in waterflood patterns based on analytical modeling and simulation

In assessing the economic viability of a waterflood project, a key parameter is the remaining oil saturation (ROS) within each pattern unit. This information helps in identifying the areas with the highest ROS and thus potential for further development. While special core analysis, log-inject-log, a...

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Main Author: Azimov, Anar Etibar
Other Authors: Barrufet, Maria
Format: Others
Language:en_US
Published: Texas A&M University 2006
Subjects:
Online Access:http://hdl.handle.net/1969.1/3823
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spelling ndltd-tamu.edu-oai-repository.tamu.edu-1969.1-38232013-01-08T10:38:13ZComparative analysis of remaining oil saturation in waterflood patterns based on analytical modeling and simulationAzimov, Anar EtibarRemaining oil saturation evaluationcomperative analysisIn assessing the economic viability of a waterflood project, a key parameter is the remaining oil saturation (ROS) within each pattern unit. This information helps in identifying the areas with the highest ROS and thus potential for further development. While special core analysis, log-inject-log, and thermal-decay time-log-evaluation techniques are available, they provide only single-point values and a snapshot in time near a wellbore. Also, they can quickly add up to an expensive program. The analytical areal distribution method estimates ROS in a waterflood pattern unit from material balance calculations using well injection and production data with no pressure information required. Well production and injection volumes are routinely measured in oilfield operations, making the method very attractive. The areal distribution technique estimates two major uncertainties: vertical loss of injected water into nontarget areas or areal loss into surrounding patterns, and injected water for gas fill-up. However, developers tested it only in low-pressure conditions, which are increasingly rare in oilfield operations. The main purpose of my research, then, was to verify whether or not the areal distribution method is valid in higher pressure conditions. Simulation of various waterflood patterns confirmed that the areal distribution method with its estimated ROS is capable of precise estimation of actual ROS, but at high pressures it requires consideration of pressure data in addition to injection and production data.Texas A&M UniversityBarrufet, MariaMamora, Daulat2006-08-16T19:05:10Z2006-08-16T19:05:10Z0001-052006-08-16T19:05:10ZBookThesisElectronic Thesistext421540 byteselectronicapplication/pdfborn digitalhttp://hdl.handle.net/1969.1/3823en_US
collection NDLTD
language en_US
format Others
sources NDLTD
topic Remaining oil saturation evaluation
comperative analysis

spellingShingle Remaining oil saturation evaluation
comperative analysis

Azimov, Anar Etibar
Comparative analysis of remaining oil saturation in waterflood patterns based on analytical modeling and simulation
description In assessing the economic viability of a waterflood project, a key parameter is the remaining oil saturation (ROS) within each pattern unit. This information helps in identifying the areas with the highest ROS and thus potential for further development. While special core analysis, log-inject-log, and thermal-decay time-log-evaluation techniques are available, they provide only single-point values and a snapshot in time near a wellbore. Also, they can quickly add up to an expensive program. The analytical areal distribution method estimates ROS in a waterflood pattern unit from material balance calculations using well injection and production data with no pressure information required. Well production and injection volumes are routinely measured in oilfield operations, making the method very attractive. The areal distribution technique estimates two major uncertainties: vertical loss of injected water into nontarget areas or areal loss into surrounding patterns, and injected water for gas fill-up. However, developers tested it only in low-pressure conditions, which are increasingly rare in oilfield operations. The main purpose of my research, then, was to verify whether or not the areal distribution method is valid in higher pressure conditions. Simulation of various waterflood patterns confirmed that the areal distribution method with its estimated ROS is capable of precise estimation of actual ROS, but at high pressures it requires consideration of pressure data in addition to injection and production data.
author2 Barrufet, Maria
author_facet Barrufet, Maria
Azimov, Anar Etibar
author Azimov, Anar Etibar
author_sort Azimov, Anar Etibar
title Comparative analysis of remaining oil saturation in waterflood patterns based on analytical modeling and simulation
title_short Comparative analysis of remaining oil saturation in waterflood patterns based on analytical modeling and simulation
title_full Comparative analysis of remaining oil saturation in waterflood patterns based on analytical modeling and simulation
title_fullStr Comparative analysis of remaining oil saturation in waterflood patterns based on analytical modeling and simulation
title_full_unstemmed Comparative analysis of remaining oil saturation in waterflood patterns based on analytical modeling and simulation
title_sort comparative analysis of remaining oil saturation in waterflood patterns based on analytical modeling and simulation
publisher Texas A&M University
publishDate 2006
url http://hdl.handle.net/1969.1/3823
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