Paleogeomorphy evolution of the Ordovician weathering crust and its implication for reservoir development, eastern Ordos Basin

Gas reservoir development of the Ordovician weathering crust in the Ordos Basin is closely controlled by the pre-Carboniferous paleogeomorphy. Previous studies show that the paleogeomorphy is high in the west and low in the east, and the karst highland, karst slope and karst basin are developed from...
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Autor*in:	Xinshan Wei [verfasserIn] Junfeng Ren [verfasserIn] Junxing Zhao [verfasserIn] Daofeng Zhang [verfasserIn] Shunshe Luo [verfasserIn] Liubin Wei [verfasserIn] Juanping Chen [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2018

Übergeordnetes Werk:	In: Petroleum Research - KeAi Communications Co., Ltd., 2019, 3(2018), 1, Seite 77-89
Übergeordnetes Werk:	volume:3 ; year:2018 ; number:1 ; pages:77-89

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1016/j.ptlrs.2018.03.004

Katalog-ID:	DOAJ055295444

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520			\|a Gas reservoir development of the Ordovician weathering crust in the Ordos Basin is closely controlled by the pre-Carboniferous paleogeomorphy. Previous studies show that the paleogeomorphy is high in the west and low in the east, and the karst highland, karst slope and karst basin are developed from west to east. With further exploration in recent years, many karst breccia that represent strong karstification, are found in the east area which previously is considered to be the Ordovician karst basin. Thus, it is necessary to revaluate controlling factors of karst paleogeomorphy development from a viewpoint of the dynamic paleogeomorphy evolution, to investigate the paleogeomorphy evolution of the Ordovician weathering crust in geological history and guide further research and prediction of development law of reservoir spaces. In order to reconstruct the paleogeomorphy of the weathering crust in the top of Ordovician in the east Ordos Basin, paleogeography, thickness of residual strata and paleokarst characteristics are well studied. The result shows that a wide range of paleokarst highland occurred in the central to east part of Ordos Basin in the early period, and the karst reservoir spaces were formed; but in the late period, the east part of the basin gradually evolved into the paleokarst basin, the current pre-Carboniferous paleogeomorphy was thus formed, and the dissolution reservoir spaces formed in the early period were mostly filled, accordingly the reservoirs were tight. However fracture networks formed by cave collapse connect intercrystalline pores of dolomite, therefore, the reservoirs can still be well preserved locally and are worthy targets for hydrocarbon exploration. Keywords: The Ordovician weathering crust, Paleogeomorphy, Karst highland, Karst slope, Karst basin, Karst reservoir, Majiagou Formation, The eastern Ordos Basin
653		0	\|a Oils, fats, and waxes
653		0	\|a Petroleum refining. Petroleum products
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700	0		\|a Juanping Chen \|e verfasserin \|4 aut
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spelling	10.1016/j.ptlrs.2018.03.004 doi (DE-627)DOAJ055295444 (DE-599)DOAJb02c2002923840b487c9b1038bb23c14 DE-627 ger DE-627 rakwb eng TP670-699 TP690-692.5 Xinshan Wei verfasserin aut Paleogeomorphy evolution of the Ordovician weathering crust and its implication for reservoir development, eastern Ordos Basin 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Gas reservoir development of the Ordovician weathering crust in the Ordos Basin is closely controlled by the pre-Carboniferous paleogeomorphy. Previous studies show that the paleogeomorphy is high in the west and low in the east, and the karst highland, karst slope and karst basin are developed from west to east. With further exploration in recent years, many karst breccia that represent strong karstification, are found in the east area which previously is considered to be the Ordovician karst basin. Thus, it is necessary to revaluate controlling factors of karst paleogeomorphy development from a viewpoint of the dynamic paleogeomorphy evolution, to investigate the paleogeomorphy evolution of the Ordovician weathering crust in geological history and guide further research and prediction of development law of reservoir spaces. In order to reconstruct the paleogeomorphy of the weathering crust in the top of Ordovician in the east Ordos Basin, paleogeography, thickness of residual strata and paleokarst characteristics are well studied. The result shows that a wide range of paleokarst highland occurred in the central to east part of Ordos Basin in the early period, and the karst reservoir spaces were formed; but in the late period, the east part of the basin gradually evolved into the paleokarst basin, the current pre-Carboniferous paleogeomorphy was thus formed, and the dissolution reservoir spaces formed in the early period were mostly filled, accordingly the reservoirs were tight. However fracture networks formed by cave collapse connect intercrystalline pores of dolomite, therefore, the reservoirs can still be well preserved locally and are worthy targets for hydrocarbon exploration. Keywords: The Ordovician weathering crust, Paleogeomorphy, Karst highland, Karst slope, Karst basin, Karst reservoir, Majiagou Formation, The eastern Ordos Basin Oils, fats, and waxes Petroleum refining. Petroleum products Junfeng Ren verfasserin aut Junxing Zhao verfasserin aut Daofeng Zhang verfasserin aut Shunshe Luo verfasserin aut Liubin Wei verfasserin aut Juanping Chen verfasserin aut In Petroleum Research KeAi Communications Co., Ltd., 2019 3(2018), 1, Seite 77-89 (DE-627)102832507X (DE-600)2938121-6 25241729 nnns volume:3 year:2018 number:1 pages:77-89 https://doi.org/10.1016/j.ptlrs.2018.03.004 kostenfrei https://doaj.org/article/b02c2002923840b487c9b1038bb23c14 kostenfrei http://www.sciencedirect.com/science/article/pii/S2096249518300267 kostenfrei https://doaj.org/toc/2096-2495 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2018 1 77-89
allfields_unstemmed	10.1016/j.ptlrs.2018.03.004 doi (DE-627)DOAJ055295444 (DE-599)DOAJb02c2002923840b487c9b1038bb23c14 DE-627 ger DE-627 rakwb eng TP670-699 TP690-692.5 Xinshan Wei verfasserin aut Paleogeomorphy evolution of the Ordovician weathering crust and its implication for reservoir development, eastern Ordos Basin 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Gas reservoir development of the Ordovician weathering crust in the Ordos Basin is closely controlled by the pre-Carboniferous paleogeomorphy. Previous studies show that the paleogeomorphy is high in the west and low in the east, and the karst highland, karst slope and karst basin are developed from west to east. With further exploration in recent years, many karst breccia that represent strong karstification, are found in the east area which previously is considered to be the Ordovician karst basin. Thus, it is necessary to revaluate controlling factors of karst paleogeomorphy development from a viewpoint of the dynamic paleogeomorphy evolution, to investigate the paleogeomorphy evolution of the Ordovician weathering crust in geological history and guide further research and prediction of development law of reservoir spaces. In order to reconstruct the paleogeomorphy of the weathering crust in the top of Ordovician in the east Ordos Basin, paleogeography, thickness of residual strata and paleokarst characteristics are well studied. The result shows that a wide range of paleokarst highland occurred in the central to east part of Ordos Basin in the early period, and the karst reservoir spaces were formed; but in the late period, the east part of the basin gradually evolved into the paleokarst basin, the current pre-Carboniferous paleogeomorphy was thus formed, and the dissolution reservoir spaces formed in the early period were mostly filled, accordingly the reservoirs were tight. However fracture networks formed by cave collapse connect intercrystalline pores of dolomite, therefore, the reservoirs can still be well preserved locally and are worthy targets for hydrocarbon exploration. Keywords: The Ordovician weathering crust, Paleogeomorphy, Karst highland, Karst slope, Karst basin, Karst reservoir, Majiagou Formation, The eastern Ordos Basin Oils, fats, and waxes Petroleum refining. Petroleum products Junfeng Ren verfasserin aut Junxing Zhao verfasserin aut Daofeng Zhang verfasserin aut Shunshe Luo verfasserin aut Liubin Wei verfasserin aut Juanping Chen verfasserin aut In Petroleum Research KeAi Communications Co., Ltd., 2019 3(2018), 1, Seite 77-89 (DE-627)102832507X (DE-600)2938121-6 25241729 nnns volume:3 year:2018 number:1 pages:77-89 https://doi.org/10.1016/j.ptlrs.2018.03.004 kostenfrei https://doaj.org/article/b02c2002923840b487c9b1038bb23c14 kostenfrei http://www.sciencedirect.com/science/article/pii/S2096249518300267 kostenfrei https://doaj.org/toc/2096-2495 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2018 1 77-89
allfieldsGer	10.1016/j.ptlrs.2018.03.004 doi (DE-627)DOAJ055295444 (DE-599)DOAJb02c2002923840b487c9b1038bb23c14 DE-627 ger DE-627 rakwb eng TP670-699 TP690-692.5 Xinshan Wei verfasserin aut Paleogeomorphy evolution of the Ordovician weathering crust and its implication for reservoir development, eastern Ordos Basin 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Gas reservoir development of the Ordovician weathering crust in the Ordos Basin is closely controlled by the pre-Carboniferous paleogeomorphy. Previous studies show that the paleogeomorphy is high in the west and low in the east, and the karst highland, karst slope and karst basin are developed from west to east. With further exploration in recent years, many karst breccia that represent strong karstification, are found in the east area which previously is considered to be the Ordovician karst basin. Thus, it is necessary to revaluate controlling factors of karst paleogeomorphy development from a viewpoint of the dynamic paleogeomorphy evolution, to investigate the paleogeomorphy evolution of the Ordovician weathering crust in geological history and guide further research and prediction of development law of reservoir spaces. In order to reconstruct the paleogeomorphy of the weathering crust in the top of Ordovician in the east Ordos Basin, paleogeography, thickness of residual strata and paleokarst characteristics are well studied. The result shows that a wide range of paleokarst highland occurred in the central to east part of Ordos Basin in the early period, and the karst reservoir spaces were formed; but in the late period, the east part of the basin gradually evolved into the paleokarst basin, the current pre-Carboniferous paleogeomorphy was thus formed, and the dissolution reservoir spaces formed in the early period were mostly filled, accordingly the reservoirs were tight. However fracture networks formed by cave collapse connect intercrystalline pores of dolomite, therefore, the reservoirs can still be well preserved locally and are worthy targets for hydrocarbon exploration. Keywords: The Ordovician weathering crust, Paleogeomorphy, Karst highland, Karst slope, Karst basin, Karst reservoir, Majiagou Formation, The eastern Ordos Basin Oils, fats, and waxes Petroleum refining. Petroleum products Junfeng Ren verfasserin aut Junxing Zhao verfasserin aut Daofeng Zhang verfasserin aut Shunshe Luo verfasserin aut Liubin Wei verfasserin aut Juanping Chen verfasserin aut In Petroleum Research KeAi Communications Co., Ltd., 2019 3(2018), 1, Seite 77-89 (DE-627)102832507X (DE-600)2938121-6 25241729 nnns volume:3 year:2018 number:1 pages:77-89 https://doi.org/10.1016/j.ptlrs.2018.03.004 kostenfrei https://doaj.org/article/b02c2002923840b487c9b1038bb23c14 kostenfrei http://www.sciencedirect.com/science/article/pii/S2096249518300267 kostenfrei https://doaj.org/toc/2096-2495 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2018 1 77-89
allfieldsSound	10.1016/j.ptlrs.2018.03.004 doi (DE-627)DOAJ055295444 (DE-599)DOAJb02c2002923840b487c9b1038bb23c14 DE-627 ger DE-627 rakwb eng TP670-699 TP690-692.5 Xinshan Wei verfasserin aut Paleogeomorphy evolution of the Ordovician weathering crust and its implication for reservoir development, eastern Ordos Basin 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Gas reservoir development of the Ordovician weathering crust in the Ordos Basin is closely controlled by the pre-Carboniferous paleogeomorphy. Previous studies show that the paleogeomorphy is high in the west and low in the east, and the karst highland, karst slope and karst basin are developed from west to east. With further exploration in recent years, many karst breccia that represent strong karstification, are found in the east area which previously is considered to be the Ordovician karst basin. Thus, it is necessary to revaluate controlling factors of karst paleogeomorphy development from a viewpoint of the dynamic paleogeomorphy evolution, to investigate the paleogeomorphy evolution of the Ordovician weathering crust in geological history and guide further research and prediction of development law of reservoir spaces. In order to reconstruct the paleogeomorphy of the weathering crust in the top of Ordovician in the east Ordos Basin, paleogeography, thickness of residual strata and paleokarst characteristics are well studied. The result shows that a wide range of paleokarst highland occurred in the central to east part of Ordos Basin in the early period, and the karst reservoir spaces were formed; but in the late period, the east part of the basin gradually evolved into the paleokarst basin, the current pre-Carboniferous paleogeomorphy was thus formed, and the dissolution reservoir spaces formed in the early period were mostly filled, accordingly the reservoirs were tight. However fracture networks formed by cave collapse connect intercrystalline pores of dolomite, therefore, the reservoirs can still be well preserved locally and are worthy targets for hydrocarbon exploration. Keywords: The Ordovician weathering crust, Paleogeomorphy, Karst highland, Karst slope, Karst basin, Karst reservoir, Majiagou Formation, The eastern Ordos Basin Oils, fats, and waxes Petroleum refining. Petroleum products Junfeng Ren verfasserin aut Junxing Zhao verfasserin aut Daofeng Zhang verfasserin aut Shunshe Luo verfasserin aut Liubin Wei verfasserin aut Juanping Chen verfasserin aut In Petroleum Research KeAi Communications Co., Ltd., 2019 3(2018), 1, Seite 77-89 (DE-627)102832507X (DE-600)2938121-6 25241729 nnns volume:3 year:2018 number:1 pages:77-89 https://doi.org/10.1016/j.ptlrs.2018.03.004 kostenfrei https://doaj.org/article/b02c2002923840b487c9b1038bb23c14 kostenfrei http://www.sciencedirect.com/science/article/pii/S2096249518300267 kostenfrei https://doaj.org/toc/2096-2495 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2018 1 77-89
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The result shows that a wide range of paleokarst highland occurred in the central to east part of Ordos Basin in the early period, and the karst reservoir spaces were formed; but in the late period, the east part of the basin gradually evolved into the paleokarst basin, the current pre-Carboniferous paleogeomorphy was thus formed, and the dissolution reservoir spaces formed in the early period were mostly filled, accordingly the reservoirs were tight. However fracture networks formed by cave collapse connect intercrystalline pores of dolomite, therefore, the reservoirs can still be well preserved locally and are worthy targets for hydrocarbon exploration. 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callnumber-first	T - Technology
author	Xinshan Wei
spellingShingle	Xinshan Wei misc TP670-699 misc TP690-692.5 misc Oils, fats, and waxes misc Petroleum refining. Petroleum products Paleogeomorphy evolution of the Ordovician weathering crust and its implication for reservoir development, eastern Ordos Basin
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topic_title	TP670-699 TP690-692.5 Paleogeomorphy evolution of the Ordovician weathering crust and its implication for reservoir development, eastern Ordos Basin
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title	Paleogeomorphy evolution of the Ordovician weathering crust and its implication for reservoir development, eastern Ordos Basin
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title_full	Paleogeomorphy evolution of the Ordovician weathering crust and its implication for reservoir development, eastern Ordos Basin
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author_browse	Xinshan Wei Junfeng Ren Junxing Zhao Daofeng Zhang Shunshe Luo Liubin Wei Juanping Chen
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title_sort	paleogeomorphy evolution of the ordovician weathering crust and its implication for reservoir development, eastern ordos basin
callnumber	TP670-699
title_auth	Paleogeomorphy evolution of the Ordovician weathering crust and its implication for reservoir development, eastern Ordos Basin
abstract	Gas reservoir development of the Ordovician weathering crust in the Ordos Basin is closely controlled by the pre-Carboniferous paleogeomorphy. Previous studies show that the paleogeomorphy is high in the west and low in the east, and the karst highland, karst slope and karst basin are developed from west to east. With further exploration in recent years, many karst breccia that represent strong karstification, are found in the east area which previously is considered to be the Ordovician karst basin. Thus, it is necessary to revaluate controlling factors of karst paleogeomorphy development from a viewpoint of the dynamic paleogeomorphy evolution, to investigate the paleogeomorphy evolution of the Ordovician weathering crust in geological history and guide further research and prediction of development law of reservoir spaces. In order to reconstruct the paleogeomorphy of the weathering crust in the top of Ordovician in the east Ordos Basin, paleogeography, thickness of residual strata and paleokarst characteristics are well studied. The result shows that a wide range of paleokarst highland occurred in the central to east part of Ordos Basin in the early period, and the karst reservoir spaces were formed; but in the late period, the east part of the basin gradually evolved into the paleokarst basin, the current pre-Carboniferous paleogeomorphy was thus formed, and the dissolution reservoir spaces formed in the early period were mostly filled, accordingly the reservoirs were tight. However fracture networks formed by cave collapse connect intercrystalline pores of dolomite, therefore, the reservoirs can still be well preserved locally and are worthy targets for hydrocarbon exploration. Keywords: The Ordovician weathering crust, Paleogeomorphy, Karst highland, Karst slope, Karst basin, Karst reservoir, Majiagou Formation, The eastern Ordos Basin
abstractGer	Gas reservoir development of the Ordovician weathering crust in the Ordos Basin is closely controlled by the pre-Carboniferous paleogeomorphy. Previous studies show that the paleogeomorphy is high in the west and low in the east, and the karst highland, karst slope and karst basin are developed from west to east. With further exploration in recent years, many karst breccia that represent strong karstification, are found in the east area which previously is considered to be the Ordovician karst basin. Thus, it is necessary to revaluate controlling factors of karst paleogeomorphy development from a viewpoint of the dynamic paleogeomorphy evolution, to investigate the paleogeomorphy evolution of the Ordovician weathering crust in geological history and guide further research and prediction of development law of reservoir spaces. In order to reconstruct the paleogeomorphy of the weathering crust in the top of Ordovician in the east Ordos Basin, paleogeography, thickness of residual strata and paleokarst characteristics are well studied. The result shows that a wide range of paleokarst highland occurred in the central to east part of Ordos Basin in the early period, and the karst reservoir spaces were formed; but in the late period, the east part of the basin gradually evolved into the paleokarst basin, the current pre-Carboniferous paleogeomorphy was thus formed, and the dissolution reservoir spaces formed in the early period were mostly filled, accordingly the reservoirs were tight. However fracture networks formed by cave collapse connect intercrystalline pores of dolomite, therefore, the reservoirs can still be well preserved locally and are worthy targets for hydrocarbon exploration. Keywords: The Ordovician weathering crust, Paleogeomorphy, Karst highland, Karst slope, Karst basin, Karst reservoir, Majiagou Formation, The eastern Ordos Basin
abstract_unstemmed	Gas reservoir development of the Ordovician weathering crust in the Ordos Basin is closely controlled by the pre-Carboniferous paleogeomorphy. Previous studies show that the paleogeomorphy is high in the west and low in the east, and the karst highland, karst slope and karst basin are developed from west to east. With further exploration in recent years, many karst breccia that represent strong karstification, are found in the east area which previously is considered to be the Ordovician karst basin. Thus, it is necessary to revaluate controlling factors of karst paleogeomorphy development from a viewpoint of the dynamic paleogeomorphy evolution, to investigate the paleogeomorphy evolution of the Ordovician weathering crust in geological history and guide further research and prediction of development law of reservoir spaces. In order to reconstruct the paleogeomorphy of the weathering crust in the top of Ordovician in the east Ordos Basin, paleogeography, thickness of residual strata and paleokarst characteristics are well studied. The result shows that a wide range of paleokarst highland occurred in the central to east part of Ordos Basin in the early period, and the karst reservoir spaces were formed; but in the late period, the east part of the basin gradually evolved into the paleokarst basin, the current pre-Carboniferous paleogeomorphy was thus formed, and the dissolution reservoir spaces formed in the early period were mostly filled, accordingly the reservoirs were tight. However fracture networks formed by cave collapse connect intercrystalline pores of dolomite, therefore, the reservoirs can still be well preserved locally and are worthy targets for hydrocarbon exploration. Keywords: The Ordovician weathering crust, Paleogeomorphy, Karst highland, Karst slope, Karst basin, Karst reservoir, Majiagou Formation, The eastern Ordos Basin
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title_short	Paleogeomorphy evolution of the Ordovician weathering crust and its implication for reservoir development, eastern Ordos Basin
url	https://doi.org/10.1016/j.ptlrs.2018.03.004 https://doaj.org/article/b02c2002923840b487c9b1038bb23c14 http://www.sciencedirect.com/science/article/pii/S2096249518300267 https://doaj.org/toc/2096-2495
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up_date	2024-07-03T14:08:13.015Z
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The result shows that a wide range of paleokarst highland occurred in the central to east part of Ordos Basin in the early period, and the karst reservoir spaces were formed; but in the late period, the east part of the basin gradually evolved into the paleokarst basin, the current pre-Carboniferous paleogeomorphy was thus formed, and the dissolution reservoir spaces formed in the early period were mostly filled, accordingly the reservoirs were tight. However fracture networks formed by cave collapse connect intercrystalline pores of dolomite, therefore, the reservoirs can still be well preserved locally and are worthy targets for hydrocarbon exploration. 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Paleogeomorphy evolution of the Ordovician weathering crust and its implication for reservoir development, eastern Ordos Basin

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