Revisit a mature oil field’s facilities to extend its economic life

Mature fields hold large volume of remaining hydrocarbon in reservoir. However, they are exposed to many challenges, for example increasing GOR, increasing water cut, and integrity issue of facilities which restrict the economic viability of the fields. The net operating cash flow is on a decreasing...

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Main Author:	Mat Shaari, Nursyawalini
Format:	Thesis
Language:	English
Published:	2019
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/86224/1/NursyawaliniMatShaariMSChE2019.pdf
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spelling	my-utm-ep.862242020-08-31T14:03:33Z Revisit a mature oil field’s facilities to extend its economic life 2019 Mat Shaari, Nursyawalini TP Chemical technology Mature fields hold large volume of remaining hydrocarbon in reservoir. However, they are exposed to many challenges, for example increasing GOR, increasing water cut, and integrity issue of facilities which restrict the economic viability of the fields. The net operating cash flow is on a decreasing trend and the economic limit is approaching closer. Multidisciplinary approach which involves subsurface strategies and surface optimization are required to extend the economic life of mature fields. The purpose of this study is evaluate the impact of rejuvenation of mature fields by integrating subsurface optimization through infill wells and surface facilities optimization by converting a manned Central Processing Platform (CPP) to an unmanned Wellhead Platform (WHP) on the extension of mature fields’ economic life. Isolation of rotating equipment and reduction of equipment count on the CPP are required to reduce the maintenance frequency and gives opportunity to unman the CPP. However, the additional gas production from the new infill wells introduces another challenge on the surface facilities’ capacity limit of the platform. Process changes are required on the existing platform and were evaluated using hydraulic simulation tool, PIPESIM to determine the new operating condition at the existing platform after conversion of that CPP to WHP. Brownfield modifications required to accommodate high gas production from new infill wells were evaluated based on the results of adequacy check on existing equipment. CAPEX and OPEX required for the subsurface and surface optimization plan were estimated to evaluate the economics of the mature fields based on the new scenario. From the results, it is shown that conversion of the manned platform to unmanned platform can reduce the OPEX by 12% and economic limit is extended four years longer. 2019 Thesis http://eprints.utm.my/id/eprint/86224/ http://eprints.utm.my/id/eprint/86224/1/NursyawaliniMatShaariMSChE2019.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:131610 masters Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering Faculty of Engineering - School of Chemical & Energy Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Mat Shaari, Nursyawalini Revisit a mature oil field’s facilities to extend its economic life
description	Mature fields hold large volume of remaining hydrocarbon in reservoir. However, they are exposed to many challenges, for example increasing GOR, increasing water cut, and integrity issue of facilities which restrict the economic viability of the fields. The net operating cash flow is on a decreasing trend and the economic limit is approaching closer. Multidisciplinary approach which involves subsurface strategies and surface optimization are required to extend the economic life of mature fields. The purpose of this study is evaluate the impact of rejuvenation of mature fields by integrating subsurface optimization through infill wells and surface facilities optimization by converting a manned Central Processing Platform (CPP) to an unmanned Wellhead Platform (WHP) on the extension of mature fields’ economic life. Isolation of rotating equipment and reduction of equipment count on the CPP are required to reduce the maintenance frequency and gives opportunity to unman the CPP. However, the additional gas production from the new infill wells introduces another challenge on the surface facilities’ capacity limit of the platform. Process changes are required on the existing platform and were evaluated using hydraulic simulation tool, PIPESIM to determine the new operating condition at the existing platform after conversion of that CPP to WHP. Brownfield modifications required to accommodate high gas production from new infill wells were evaluated based on the results of adequacy check on existing equipment. CAPEX and OPEX required for the subsurface and surface optimization plan were estimated to evaluate the economics of the mature fields based on the new scenario. From the results, it is shown that conversion of the manned platform to unmanned platform can reduce the OPEX by 12% and economic limit is extended four years longer.
format	Thesis
qualification_level	Master's degree
author	Mat Shaari, Nursyawalini
author_facet	Mat Shaari, Nursyawalini
author_sort	Mat Shaari, Nursyawalini
title	Revisit a mature oil field’s facilities to extend its economic life
title_short	Revisit a mature oil field’s facilities to extend its economic life
title_full	Revisit a mature oil field’s facilities to extend its economic life
title_fullStr	Revisit a mature oil field’s facilities to extend its economic life
title_full_unstemmed	Revisit a mature oil field’s facilities to extend its economic life
title_sort	revisit a mature oil field’s facilities to extend its economic life
granting_institution	Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2019
url	http://eprints.utm.my/id/eprint/86224/1/NursyawaliniMatShaariMSChE2019.pdf
_version_	1747818508287213568

Revisit a mature oil field’s facilities to extend its economic life

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