Architecture mode, sedimentary evolution and controlling factors of deepwater turbidity channels: A case study of the M Oilfield in West Africa

Abstract Turbidity channels have been considered as one of the important types of deepwater reservoir, and the study of their architecture plays a key role in efficient development of an oil field. To better understand the reservoir architecture of the lower Congo Basin M oilfield, semi-quantitative...

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Autores principales:	Wen-Biao Zhang, Tai-Zhong Duan, Zhi-Qiang Liu, Yan-Feng Liu, Lei Zhao, Rui Xu
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2017
Materias:	Reservoir architecture Turbidity channel Sedimentary evolution Deep water Shallow seismic Controlling factors Science Q Petrology QE420-499
Acceso en línea:	https://doaj.org/article/3bccb49dae7c444eabe0b3d0625469d4
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spelling	oai:doaj.org-article:3bccb49dae7c444eabe0b3d0625469d42021-12-02T07:58:35ZArchitecture mode, sedimentary evolution and controlling factors of deepwater turbidity channels: A case study of the M Oilfield in West Africa10.1007/s12182-017-0181-21672-51071995-8226https://doaj.org/article/3bccb49dae7c444eabe0b3d0625469d42017-07-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-017-0181-2https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract Turbidity channels have been considered as one of the important types of deepwater reservoir, and the study of their architecture plays a key role in efficient development of an oil field. To better understand the reservoir architecture of the lower Congo Basin M oilfield, semi-quantitative–quantitative study on turbidity channel depositional architecture patterns in the middle to lower slopes was conducted with the aid of abundant high quality materials (core, outcrop, logging and seismic data), employing seismic stratigraphy, seismic sedimentology and sedimentary petrography methods. Then, its sedimentary evolution was analyzed accordingly. The results indicated that in the study area, grade 3 to grade 5 architecture units were single channel, complex channel and channel systems, respectively. Single channel sinuosity is negatively correlated with the slope, as internal grains became finer and thickness became thinner from bottom to top, axis to edge. The migration type of a single channel within one complex channel can be lateral migration and along paleocurrent migration horizontally, and lateral, indented and swing stacking in section view. Based on external morphological characteristics and boundaries, channel systems are comprised of a weakly confining type and a non-confining type. The O73 channel system can be divided into four complex channels named S1–S4, from bottom to top, with gradually less incision and more accretion. The study in this article will promote deeper understanding of turbidity channel theory, guide 3D geological modeling in reservoir development and contribute to efficient development of such reservoirs.Wen-Biao ZhangTai-Zhong DuanZhi-Qiang LiuYan-Feng LiuLei ZhaoRui XuKeAi Communications Co., Ltd.articleReservoir architectureTurbidity channelSedimentary evolutionDeep waterShallow seismicControlling factorsScienceQPetrologyQE420-499ENPetroleum Science, Vol 14, Iss 3, Pp 493-506 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Reservoir architecture Turbidity channel Sedimentary evolution Deep water Shallow seismic Controlling factors Science Q Petrology QE420-499
spellingShingle	Reservoir architecture Turbidity channel Sedimentary evolution Deep water Shallow seismic Controlling factors Science Q Petrology QE420-499 Wen-Biao Zhang Tai-Zhong Duan Zhi-Qiang Liu Yan-Feng Liu Lei Zhao Rui Xu Architecture mode, sedimentary evolution and controlling factors of deepwater turbidity channels: A case study of the M Oilfield in West Africa
description	Abstract Turbidity channels have been considered as one of the important types of deepwater reservoir, and the study of their architecture plays a key role in efficient development of an oil field. To better understand the reservoir architecture of the lower Congo Basin M oilfield, semi-quantitative–quantitative study on turbidity channel depositional architecture patterns in the middle to lower slopes was conducted with the aid of abundant high quality materials (core, outcrop, logging and seismic data), employing seismic stratigraphy, seismic sedimentology and sedimentary petrography methods. Then, its sedimentary evolution was analyzed accordingly. The results indicated that in the study area, grade 3 to grade 5 architecture units were single channel, complex channel and channel systems, respectively. Single channel sinuosity is negatively correlated with the slope, as internal grains became finer and thickness became thinner from bottom to top, axis to edge. The migration type of a single channel within one complex channel can be lateral migration and along paleocurrent migration horizontally, and lateral, indented and swing stacking in section view. Based on external morphological characteristics and boundaries, channel systems are comprised of a weakly confining type and a non-confining type. The O73 channel system can be divided into four complex channels named S1–S4, from bottom to top, with gradually less incision and more accretion. The study in this article will promote deeper understanding of turbidity channel theory, guide 3D geological modeling in reservoir development and contribute to efficient development of such reservoirs.
format	article
author	Wen-Biao Zhang Tai-Zhong Duan Zhi-Qiang Liu Yan-Feng Liu Lei Zhao Rui Xu
author_facet	Wen-Biao Zhang Tai-Zhong Duan Zhi-Qiang Liu Yan-Feng Liu Lei Zhao Rui Xu
author_sort	Wen-Biao Zhang
title	Architecture mode, sedimentary evolution and controlling factors of deepwater turbidity channels: A case study of the M Oilfield in West Africa
title_short	Architecture mode, sedimentary evolution and controlling factors of deepwater turbidity channels: A case study of the M Oilfield in West Africa
title_full	Architecture mode, sedimentary evolution and controlling factors of deepwater turbidity channels: A case study of the M Oilfield in West Africa
title_fullStr	Architecture mode, sedimentary evolution and controlling factors of deepwater turbidity channels: A case study of the M Oilfield in West Africa
title_full_unstemmed	Architecture mode, sedimentary evolution and controlling factors of deepwater turbidity channels: A case study of the M Oilfield in West Africa
title_sort	architecture mode, sedimentary evolution and controlling factors of deepwater turbidity channels: a case study of the m oilfield in west africa
publisher	KeAi Communications Co., Ltd.
publishDate	2017
url	https://doaj.org/article/3bccb49dae7c444eabe0b3d0625469d4
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_version_	1718398716425011200

Architecture mode, sedimentary evolution and controlling factors of deepwater turbidity channels: A case study of the M Oilfield in West Africa

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