The Experts below are selected from a list of 89148 Experts worldwide ranked by ideXlab platform
Ligui Xu - One of the best experts on this subject based on the ideXlab platform.
-
three dimensional seismic geomorphology and analysis of the ordovician paleoKarst drainage system in the central tabei uplift northern tarim basin western china
AAPG Bulletin, 2011Co-Authors: Hongliu Zeng, Guizhong Wang, Xavier Janson, Robert G Loucks, Bingheng Yuan, Ligui XuAbstract:High-quality three-dimensional seismic data acquired in the central Tabei Uplift, Tarim Basin, western China, provide a rare opportunity to characterize in exceptional detail the three-dimensional geomorphology of a deeply buried (5500–6500 m [18,045–21,325 ft]) Ordovician unconformity and the related paleoKarst drainage system. An integrated approach was applied that emphasized integration of seismic data with available conventional core, wireline logs, and age-equivalent outcrops. The exceptional quality of the seismic data allowed a seismic detection limit of Karstified features of less than 75 75 m (246 246 ft) horizontally and 6 m (20 ft) vertically. Interpreted geomorphologic and depositional elements include fluvial channels and canyons, fluvial valleys, sinkholes, and tower Karsts and hills. The modern tower Karst-drainage system in Guilin, China, is very similar to the mapped Ordovician Karst-drainage system and is used as a modern analog. The interaction between the surface Karst-drainage system and the shallow-subsurface cave-passage system is evidenced by the observation that surface canyons appear to initiate in areas associated with intense sinkhole development. Also, surface river valleys tend to correspond to dip-oriented surface depressions partly related to near-surface cave collapse. During burial into the deeper subsurface, the combination of intrastratal collapse (Karstified strata) and suprastratal collapse (postKarst-deposited strata) created large damage zones hundreds of meters thick and kilometers wide. Coalesced-collapsed paleocave systems can be interpreted from the unique circular pattern of faults (observed in map view) that are associated with seismic bright spots.
Hongliu Zeng - One of the best experts on this subject based on the ideXlab platform.
-
three dimensional seismic geomorphology and analysis of the ordovician paleoKarst drainage system in the central tabei uplift northern tarim basin western china
AAPG Bulletin, 2011Co-Authors: Hongliu Zeng, Guizhong Wang, Xavier Janson, Robert G Loucks, Bingheng Yuan, Ligui XuAbstract:High-quality three-dimensional seismic data acquired in the central Tabei Uplift, Tarim Basin, western China, provide a rare opportunity to characterize in exceptional detail the three-dimensional geomorphology of a deeply buried (5500–6500 m [18,045–21,325 ft]) Ordovician unconformity and the related paleoKarst drainage system. An integrated approach was applied that emphasized integration of seismic data with available conventional core, wireline logs, and age-equivalent outcrops. The exceptional quality of the seismic data allowed a seismic detection limit of Karstified features of less than 75 75 m (246 246 ft) horizontally and 6 m (20 ft) vertically. Interpreted geomorphologic and depositional elements include fluvial channels and canyons, fluvial valleys, sinkholes, and tower Karsts and hills. The modern tower Karst-drainage system in Guilin, China, is very similar to the mapped Ordovician Karst-drainage system and is used as a modern analog. The interaction between the surface Karst-drainage system and the shallow-subsurface cave-passage system is evidenced by the observation that surface canyons appear to initiate in areas associated with intense sinkhole development. Also, surface river valleys tend to correspond to dip-oriented surface depressions partly related to near-surface cave collapse. During burial into the deeper subsurface, the combination of intrastratal collapse (Karstified strata) and suprastratal collapse (postKarst-deposited strata) created large damage zones hundreds of meters thick and kilometers wide. Coalesced-collapsed paleocave systems can be interpreted from the unique circular pattern of faults (observed in map view) that are associated with seismic bright spots.
-
characterizing seismic bright spots in deeply buried ordovician paleoKarst strata central tabei uplift tarim basin western china
Geophysics, 2011Co-Authors: Hongliu Zeng, Guizhong Wang, Xavier Janson, Robert G Loucks, Yiping Xia, Bingheng YuanAbstract:Anomalous seismic-amplitude bright spots are a common feature in deeply buried (5500 to 6500 m) Ordovician limestone strata in the Central Tabei Uplift area of the Tarim Basin in northwest China. Those anomalies have proven to be useful indicators of reservoir quality. The bright spots as seen on seismic data are tied to high-gamma ray, low-velocity zones in wireline logs, and correspond to clastic cave sediment-fills in the host limestone in core. Synthetic seismic models confirm this relationship between seismic bright spots and cave-sediment fills. A seismic traveltime map of the top Ordovician unconformity illustrates erosional topography and seismic geomorphologic patterns associated with the unconformity with numerous sinuous fluvial channels and canyons, fluvial valleys, sinkholes, and tower Karsts and hills. A mature surface drainage system interacted with a near-surface Karst system and allowed terrigenous sediments to enter an underground cave system. Karst-related bright spots probably correspo...
Bingheng Yuan - One of the best experts on this subject based on the ideXlab platform.
-
three dimensional seismic geomorphology and analysis of the ordovician paleoKarst drainage system in the central tabei uplift northern tarim basin western china
AAPG Bulletin, 2011Co-Authors: Hongliu Zeng, Guizhong Wang, Xavier Janson, Robert G Loucks, Bingheng Yuan, Ligui XuAbstract:High-quality three-dimensional seismic data acquired in the central Tabei Uplift, Tarim Basin, western China, provide a rare opportunity to characterize in exceptional detail the three-dimensional geomorphology of a deeply buried (5500–6500 m [18,045–21,325 ft]) Ordovician unconformity and the related paleoKarst drainage system. An integrated approach was applied that emphasized integration of seismic data with available conventional core, wireline logs, and age-equivalent outcrops. The exceptional quality of the seismic data allowed a seismic detection limit of Karstified features of less than 75 75 m (246 246 ft) horizontally and 6 m (20 ft) vertically. Interpreted geomorphologic and depositional elements include fluvial channels and canyons, fluvial valleys, sinkholes, and tower Karsts and hills. The modern tower Karst-drainage system in Guilin, China, is very similar to the mapped Ordovician Karst-drainage system and is used as a modern analog. The interaction between the surface Karst-drainage system and the shallow-subsurface cave-passage system is evidenced by the observation that surface canyons appear to initiate in areas associated with intense sinkhole development. Also, surface river valleys tend to correspond to dip-oriented surface depressions partly related to near-surface cave collapse. During burial into the deeper subsurface, the combination of intrastratal collapse (Karstified strata) and suprastratal collapse (postKarst-deposited strata) created large damage zones hundreds of meters thick and kilometers wide. Coalesced-collapsed paleocave systems can be interpreted from the unique circular pattern of faults (observed in map view) that are associated with seismic bright spots.
-
characterizing seismic bright spots in deeply buried ordovician paleoKarst strata central tabei uplift tarim basin western china
Geophysics, 2011Co-Authors: Hongliu Zeng, Guizhong Wang, Xavier Janson, Robert G Loucks, Yiping Xia, Bingheng YuanAbstract:Anomalous seismic-amplitude bright spots are a common feature in deeply buried (5500 to 6500 m) Ordovician limestone strata in the Central Tabei Uplift area of the Tarim Basin in northwest China. Those anomalies have proven to be useful indicators of reservoir quality. The bright spots as seen on seismic data are tied to high-gamma ray, low-velocity zones in wireline logs, and correspond to clastic cave sediment-fills in the host limestone in core. Synthetic seismic models confirm this relationship between seismic bright spots and cave-sediment fills. A seismic traveltime map of the top Ordovician unconformity illustrates erosional topography and seismic geomorphologic patterns associated with the unconformity with numerous sinuous fluvial channels and canyons, fluvial valleys, sinkholes, and tower Karsts and hills. A mature surface drainage system interacted with a near-surface Karst system and allowed terrigenous sediments to enter an underground cave system. Karst-related bright spots probably correspo...
Robert G Loucks - One of the best experts on this subject based on the ideXlab platform.
-
three dimensional seismic geomorphology and analysis of the ordovician paleoKarst drainage system in the central tabei uplift northern tarim basin western china
AAPG Bulletin, 2011Co-Authors: Hongliu Zeng, Guizhong Wang, Xavier Janson, Robert G Loucks, Bingheng Yuan, Ligui XuAbstract:High-quality three-dimensional seismic data acquired in the central Tabei Uplift, Tarim Basin, western China, provide a rare opportunity to characterize in exceptional detail the three-dimensional geomorphology of a deeply buried (5500–6500 m [18,045–21,325 ft]) Ordovician unconformity and the related paleoKarst drainage system. An integrated approach was applied that emphasized integration of seismic data with available conventional core, wireline logs, and age-equivalent outcrops. The exceptional quality of the seismic data allowed a seismic detection limit of Karstified features of less than 75 75 m (246 246 ft) horizontally and 6 m (20 ft) vertically. Interpreted geomorphologic and depositional elements include fluvial channels and canyons, fluvial valleys, sinkholes, and tower Karsts and hills. The modern tower Karst-drainage system in Guilin, China, is very similar to the mapped Ordovician Karst-drainage system and is used as a modern analog. The interaction between the surface Karst-drainage system and the shallow-subsurface cave-passage system is evidenced by the observation that surface canyons appear to initiate in areas associated with intense sinkhole development. Also, surface river valleys tend to correspond to dip-oriented surface depressions partly related to near-surface cave collapse. During burial into the deeper subsurface, the combination of intrastratal collapse (Karstified strata) and suprastratal collapse (postKarst-deposited strata) created large damage zones hundreds of meters thick and kilometers wide. Coalesced-collapsed paleocave systems can be interpreted from the unique circular pattern of faults (observed in map view) that are associated with seismic bright spots.
-
characterizing seismic bright spots in deeply buried ordovician paleoKarst strata central tabei uplift tarim basin western china
Geophysics, 2011Co-Authors: Hongliu Zeng, Guizhong Wang, Xavier Janson, Robert G Loucks, Yiping Xia, Bingheng YuanAbstract:Anomalous seismic-amplitude bright spots are a common feature in deeply buried (5500 to 6500 m) Ordovician limestone strata in the Central Tabei Uplift area of the Tarim Basin in northwest China. Those anomalies have proven to be useful indicators of reservoir quality. The bright spots as seen on seismic data are tied to high-gamma ray, low-velocity zones in wireline logs, and correspond to clastic cave sediment-fills in the host limestone in core. Synthetic seismic models confirm this relationship between seismic bright spots and cave-sediment fills. A seismic traveltime map of the top Ordovician unconformity illustrates erosional topography and seismic geomorphologic patterns associated with the unconformity with numerous sinuous fluvial channels and canyons, fluvial valleys, sinkholes, and tower Karsts and hills. A mature surface drainage system interacted with a near-surface Karst system and allowed terrigenous sediments to enter an underground cave system. Karst-related bright spots probably correspo...
Xavier Janson - One of the best experts on this subject based on the ideXlab platform.
-
three dimensional seismic geomorphology and analysis of the ordovician paleoKarst drainage system in the central tabei uplift northern tarim basin western china
AAPG Bulletin, 2011Co-Authors: Hongliu Zeng, Guizhong Wang, Xavier Janson, Robert G Loucks, Bingheng Yuan, Ligui XuAbstract:High-quality three-dimensional seismic data acquired in the central Tabei Uplift, Tarim Basin, western China, provide a rare opportunity to characterize in exceptional detail the three-dimensional geomorphology of a deeply buried (5500–6500 m [18,045–21,325 ft]) Ordovician unconformity and the related paleoKarst drainage system. An integrated approach was applied that emphasized integration of seismic data with available conventional core, wireline logs, and age-equivalent outcrops. The exceptional quality of the seismic data allowed a seismic detection limit of Karstified features of less than 75 75 m (246 246 ft) horizontally and 6 m (20 ft) vertically. Interpreted geomorphologic and depositional elements include fluvial channels and canyons, fluvial valleys, sinkholes, and tower Karsts and hills. The modern tower Karst-drainage system in Guilin, China, is very similar to the mapped Ordovician Karst-drainage system and is used as a modern analog. The interaction between the surface Karst-drainage system and the shallow-subsurface cave-passage system is evidenced by the observation that surface canyons appear to initiate in areas associated with intense sinkhole development. Also, surface river valleys tend to correspond to dip-oriented surface depressions partly related to near-surface cave collapse. During burial into the deeper subsurface, the combination of intrastratal collapse (Karstified strata) and suprastratal collapse (postKarst-deposited strata) created large damage zones hundreds of meters thick and kilometers wide. Coalesced-collapsed paleocave systems can be interpreted from the unique circular pattern of faults (observed in map view) that are associated with seismic bright spots.
-
characterizing seismic bright spots in deeply buried ordovician paleoKarst strata central tabei uplift tarim basin western china
Geophysics, 2011Co-Authors: Hongliu Zeng, Guizhong Wang, Xavier Janson, Robert G Loucks, Yiping Xia, Bingheng YuanAbstract:Anomalous seismic-amplitude bright spots are a common feature in deeply buried (5500 to 6500 m) Ordovician limestone strata in the Central Tabei Uplift area of the Tarim Basin in northwest China. Those anomalies have proven to be useful indicators of reservoir quality. The bright spots as seen on seismic data are tied to high-gamma ray, low-velocity zones in wireline logs, and correspond to clastic cave sediment-fills in the host limestone in core. Synthetic seismic models confirm this relationship between seismic bright spots and cave-sediment fills. A seismic traveltime map of the top Ordovician unconformity illustrates erosional topography and seismic geomorphologic patterns associated with the unconformity with numerous sinuous fluvial channels and canyons, fluvial valleys, sinkholes, and tower Karsts and hills. A mature surface drainage system interacted with a near-surface Karst system and allowed terrigenous sediments to enter an underground cave system. Karst-related bright spots probably correspo...
