Hierarchy and subsurface correlation of muddy baffles in lacustrine delta fronts: a case study in the X Oilfield, Subei Basin, China

Abstract Muddy baffles are one of the major geological factors controlling the underground fluid flow as well as the remaining oil distribution. This study used detailed drilling data from the E1 f 1 reservoir in the X Oilfield, Subei Basin, China, to investigate the hierarchical muddy baffles devel...

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Autores principales:	Kun Qi, Xiao-Ming Zhao, Li Liu, Yi-Qing Su, Hua Wang, Cheng-Peng Tan, Yi-Ting Sun
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2018
Materias:	Delta front muddy Baffle Genetic analysis Hierarchy division Strata correlation Science Q Petrology QE420-499
Acceso en línea:	https://doaj.org/article/c1e6cfb59d5e423bae5b0b16cf8546b9
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spelling	oai:doaj.org-article:c1e6cfb59d5e423bae5b0b16cf8546b92021-12-02T06:37:00ZHierarchy and subsurface correlation of muddy baffles in lacustrine delta fronts: a case study in the X Oilfield, Subei Basin, China10.1007/s12182-018-0239-91672-51071995-8226https://doaj.org/article/c1e6cfb59d5e423bae5b0b16cf8546b92018-07-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-018-0239-9https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract Muddy baffles are one of the major geological factors controlling the underground fluid flow as well as the remaining oil distribution. This study used detailed drilling data from the E1 f 1 reservoir in the X Oilfield, Subei Basin, China, to investigate the hierarchical muddy baffles developed on lacustrine delta fronts and their precise cross-well correlation. According to the theories on allogenic and autogenic cycles as well as the genesis and scales of muddy baffles, five orders of muddy baffles were classified, which provided various degrees of difficulty when attempting interwell correlation. Under the guidance of a reliable stratigraphic model, the precise cross-well correlation of muddy baffles could be achieved and the key point of establishment of this stratigraphic model was to calculate foreset angles of hierarchical muddy baffles during deposition. During calculation, the relationships between sediment flow direction, higher-order strata dipping direction, well types and well trajectory direction should all be taken into consideration and some other angles (referred to here as θ 1, θ 2 and θ 3) should also be measured. Such new methods of cross-well correlation for hierarchical muddy baffles could greatly reduce the uncertainties and multiple solutions, which in turn would be significant for efficient development and oil recovery enhancement in the reservoirs.Kun QiXiao-Ming ZhaoLi LiuYi-Qing SuHua WangCheng-Peng TanYi-Ting SunKeAi Communications Co., Ltd.articleDelta front muddyBaffleGenetic analysisHierarchy divisionStrata correlationScienceQPetrologyQE420-499ENPetroleum Science, Vol 15, Iss 3, Pp 451-467 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Delta front muddy Baffle Genetic analysis Hierarchy division Strata correlation Science Q Petrology QE420-499
spellingShingle	Delta front muddy Baffle Genetic analysis Hierarchy division Strata correlation Science Q Petrology QE420-499 Kun Qi Xiao-Ming Zhao Li Liu Yi-Qing Su Hua Wang Cheng-Peng Tan Yi-Ting Sun Hierarchy and subsurface correlation of muddy baffles in lacustrine delta fronts: a case study in the X Oilfield, Subei Basin, China
description	Abstract Muddy baffles are one of the major geological factors controlling the underground fluid flow as well as the remaining oil distribution. This study used detailed drilling data from the E1 f 1 reservoir in the X Oilfield, Subei Basin, China, to investigate the hierarchical muddy baffles developed on lacustrine delta fronts and their precise cross-well correlation. According to the theories on allogenic and autogenic cycles as well as the genesis and scales of muddy baffles, five orders of muddy baffles were classified, which provided various degrees of difficulty when attempting interwell correlation. Under the guidance of a reliable stratigraphic model, the precise cross-well correlation of muddy baffles could be achieved and the key point of establishment of this stratigraphic model was to calculate foreset angles of hierarchical muddy baffles during deposition. During calculation, the relationships between sediment flow direction, higher-order strata dipping direction, well types and well trajectory direction should all be taken into consideration and some other angles (referred to here as θ 1, θ 2 and θ 3) should also be measured. Such new methods of cross-well correlation for hierarchical muddy baffles could greatly reduce the uncertainties and multiple solutions, which in turn would be significant for efficient development and oil recovery enhancement in the reservoirs.
format	article
author	Kun Qi Xiao-Ming Zhao Li Liu Yi-Qing Su Hua Wang Cheng-Peng Tan Yi-Ting Sun
author_facet	Kun Qi Xiao-Ming Zhao Li Liu Yi-Qing Su Hua Wang Cheng-Peng Tan Yi-Ting Sun
author_sort	Kun Qi
title	Hierarchy and subsurface correlation of muddy baffles in lacustrine delta fronts: a case study in the X Oilfield, Subei Basin, China
title_short	Hierarchy and subsurface correlation of muddy baffles in lacustrine delta fronts: a case study in the X Oilfield, Subei Basin, China
title_full	Hierarchy and subsurface correlation of muddy baffles in lacustrine delta fronts: a case study in the X Oilfield, Subei Basin, China
title_fullStr	Hierarchy and subsurface correlation of muddy baffles in lacustrine delta fronts: a case study in the X Oilfield, Subei Basin, China
title_full_unstemmed	Hierarchy and subsurface correlation of muddy baffles in lacustrine delta fronts: a case study in the X Oilfield, Subei Basin, China
title_sort	hierarchy and subsurface correlation of muddy baffles in lacustrine delta fronts: a case study in the x oilfield, subei basin, china
publisher	KeAi Communications Co., Ltd.
publishDate	2018
url	https://doaj.org/article/c1e6cfb59d5e423bae5b0b16cf8546b9
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Hierarchy and subsurface correlation of muddy baffles in lacustrine delta fronts: a case study in the X Oilfield, Subei Basin, China

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