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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/92732/1/NursyawaliniMatShaariMSChE2019.pdf
http://eprints.utm.my/id/eprint/92732/
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spelling my.utm.927322021-10-28T10:25:24Z http://eprints.utm.my/id/eprint/92732/ Revisit a mature oil field's facilities to extend its economic life 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 NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/92732/1/NursyawaliniMatShaariMSChE2019.pdf Mat Shaari, Nursyawalini (2019) Revisit a mature oil field's facilities to extend its economic life. Masters thesis, Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:131610
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 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
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
publishDate 2019
url http://eprints.utm.my/id/eprint/92732/1/NursyawaliniMatShaariMSChE2019.pdf
http://eprints.utm.my/id/eprint/92732/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:131610
_version_ 1715189681791959040
score 13.211869

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