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The improvement of modelling in carbonate reservoir by dual porosity via geological and engineering approach

Carbonate heterogeneity has complex post-depositional diagenesis, superimposed on the original microstructures inherited from the initial deposition environment during sedimentation. This causes massive complexity in pore shape, pore size, pore connectivity, and distribution of pores in carbonate, w...

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Main Author: Lim, Danycia Li Oon
Format: Thesis
Language:English
Published: 2022
Subjects:
Q Science (General)
TA Engineering (General). Civil engineering (General)
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/102577/1/DanyciaLimMSChE2022.pdf
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spelling my.utm.1025772023-09-09T01:34:28Z http://eprints.utm.my/id/eprint/102577/ The improvement of modelling in carbonate reservoir by dual porosity via geological and engineering approach Lim, Danycia Li Oon Q Science (General) TA Engineering (General). Civil engineering (General) TP Chemical technology Carbonate heterogeneity has complex post-depositional diagenesis, superimposed on the original microstructures inherited from the initial deposition environment during sedimentation. This causes massive complexity in pore shape, pore size, pore connectivity, and distribution of pores in carbonate, which leads to the complexity in carbonate reservoir modelling domestically. The porosities of carbonate rocks can be separated into three types: macro-porosity (connected porosity), mesoporosity (unconnected vugs and pores result from diagenesis dissolution) and micro-porosity (isolated porosity). This thesis focuses to propose an improved dual porosity carbonate modelling approach. The main contribution of this work is to determine the method to recognize and quantify dual porosity in carbonate through six (6) information that can be obtained from a reservoir, namely geological core description and photomicrographs, RCA and SCAL analysis, nuclear magnetic resonance NMR, mercury-injection capillary pressure MICP, pressure transient analysis and a bonus for brownfield, production pressure profile. To test the effectiveness to quantify dual porosity, Field B in Central Luconia, Sarawak is selected as a study candidate. Data from conventional core provide direct observation of the rock pore geometry via photomicrograph, a diagenetic process which leads to segregation of macro and micro-porosity. Other petrophysical properties obtained via routine core analysis (RCA) and special core analysis (SCAL) provide the reservoir poro-perm condition. The mercury injection capillary pressure (MICP) curves translate the reservoir pore throat efficiency into macro and micro-porosity. Nuclear magnetic resonance (NMR) T2 relaxation distribution yields a bimodal trend for the dual-porosity reservoir. The pressure derivative transient analysis graph exhibits a Vshape yielding a dual-porosity reservoir. The pressure surveillance plot in the brownfield shows a flattening pressure depletion trend indicating microporosity charging to the production. These results are incorporated into a multiscale model and the simulation matches the reservoir's historical data and the type of dual porosity is identified as a matrix (connected) – matrix (isolated) type. Identifying the dual porosity in the carbonate reservoir enables the management to understand the reservoir hydrocarbon production and subsequently, lay out a proper reservoir management plan. 2022 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/102577/1/DanyciaLimMSChE2022.pdf Lim, Danycia Li Oon (2022) The improvement of modelling in carbonate reservoir by dual porosity via geological and engineering approach. Masters thesis, Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:152372
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic Q Science (General)
TA Engineering (General). Civil engineering (General)
TP Chemical technology
spellingShingle Q Science (General)
TA Engineering (General). Civil engineering (General)
TP Chemical technology
Lim, Danycia Li Oon
The improvement of modelling in carbonate reservoir by dual porosity via geological and engineering approach
description Carbonate heterogeneity has complex post-depositional diagenesis, superimposed on the original microstructures inherited from the initial deposition environment during sedimentation. This causes massive complexity in pore shape, pore size, pore connectivity, and distribution of pores in carbonate, which leads to the complexity in carbonate reservoir modelling domestically. The porosities of carbonate rocks can be separated into three types: macro-porosity (connected porosity), mesoporosity (unconnected vugs and pores result from diagenesis dissolution) and micro-porosity (isolated porosity). This thesis focuses to propose an improved dual porosity carbonate modelling approach. The main contribution of this work is to determine the method to recognize and quantify dual porosity in carbonate through six (6) information that can be obtained from a reservoir, namely geological core description and photomicrographs, RCA and SCAL analysis, nuclear magnetic resonance NMR, mercury-injection capillary pressure MICP, pressure transient analysis and a bonus for brownfield, production pressure profile. To test the effectiveness to quantify dual porosity, Field B in Central Luconia, Sarawak is selected as a study candidate. Data from conventional core provide direct observation of the rock pore geometry via photomicrograph, a diagenetic process which leads to segregation of macro and micro-porosity. Other petrophysical properties obtained via routine core analysis (RCA) and special core analysis (SCAL) provide the reservoir poro-perm condition. The mercury injection capillary pressure (MICP) curves translate the reservoir pore throat efficiency into macro and micro-porosity. Nuclear magnetic resonance (NMR) T2 relaxation distribution yields a bimodal trend for the dual-porosity reservoir. The pressure derivative transient analysis graph exhibits a Vshape yielding a dual-porosity reservoir. The pressure surveillance plot in the brownfield shows a flattening pressure depletion trend indicating microporosity charging to the production. These results are incorporated into a multiscale model and the simulation matches the reservoir's historical data and the type of dual porosity is identified as a matrix (connected) – matrix (isolated) type. Identifying the dual porosity in the carbonate reservoir enables the management to understand the reservoir hydrocarbon production and subsequently, lay out a proper reservoir management plan.
format Thesis
author Lim, Danycia Li Oon
author_facet Lim, Danycia Li Oon
author_sort Lim, Danycia Li Oon
title The improvement of modelling in carbonate reservoir by dual porosity via geological and engineering approach
title_short The improvement of modelling in carbonate reservoir by dual porosity via geological and engineering approach
title_full The improvement of modelling in carbonate reservoir by dual porosity via geological and engineering approach
title_fullStr The improvement of modelling in carbonate reservoir by dual porosity via geological and engineering approach
title_full_unstemmed The improvement of modelling in carbonate reservoir by dual porosity via geological and engineering approach
title_sort improvement of modelling in carbonate reservoir by dual porosity via geological and engineering approach
publishDate 2022
url http://eprints.utm.my/id/eprint/102577/1/DanyciaLimMSChE2022.pdf
http://eprints.utm.my/id/eprint/102577/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:152372
_version_ 1778160750868561920
score 13.211869

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