Results 21 to 30 of about 482 (176)
Petroleum Exploration and Development, 2022 Geological conditions and main controlling factors of gas accumulation in subsalt Ma 4 Member of Ordovician Majiagou Formation are examined based on large amounts of drilling, logging and seismic data.
Haiqing HE +8 more
doaj +4 more sources
Genesis and pore evolution of dolomite reservoir in the Majiagou Formation, Ordos Basin, China [PDF]
Energy Exploration & Exploitation, 2022 In gypsum–carbonate rock assemblages, multistage and complex fluids control the formation of dolomite reservoirs that are a focus of hydrocarbon exploration. It is difficult to determine the types of dolomite reservoirs and their formation mechanisms due
Baobao Wang +8 more
doaj +3 more sources
Genesis of dolomite in the upper assemblage of the Ordovician Majiagou Formation in the southeastern Sulige gas field, Ordos Basin, China: Evidence from C, O, and Sr isotopes and major and trace elements [PDF]
Energy Exploration & Exploitation, 2020 Typical dolomite reservoirs exist in the upper assemblage of the Ordovician Majiagou Formation in the southeastern Sulige gas field, Ordos Basin, however, the current understanding of dolomite genesis needs to be clarified.
Liwen Zhu +5 more
doaj +3 more sources
Petroleum Exploration and Development, 2014 The trace elements, rare earth elements (REE), carbon and oxygen isotopic compositions and strontium isotopes were analyzed to study systematically the geochemical characteristics and origin of the middle assemblage dolomites from the Ordovician Majiagou
Xunyun HE +7 more
doaj +3 more sources
Petroleum, 2019 The diagenetic evolution of the moldic-pore-containing gypsum dolomites of the Middle Ordovician Majiagou Formation in the eastern Ordos Basin, central China, was studied by means of petrological, mineralogical, and geochemical analyses, to improve our ...
Tong Niu +5 more
doaj +3 more sources
Quantitative Interpretation of TOC in Complicated Lithology Based on Well Log Data: A Case of Majiagou Formation in the Eastern Ordos Basin, China [PDF]
Applied Sciences, 2021 Source rock evaluation plays a key role in studies of hydrocarbon accumulation and resource potential. Total organic carbon (TOC) is the basis of source rock evaluation and it is a key parameter that influences petroleum resource assessment. The Majiagou
Shuiqing Hu +4 more
doaj +3 more sources
Experimental Study on the Acid Fracturing Fracture Propagation Law of a Fractured Carbonate Reservoir in the Majiagou Formation [PDF]
ProcessesAcid fracturing is a crucial method for reservoir reconstruction in carbonate reservoirs, and the propagation pattern of acid-etched fractures plays a key role in determining the scope of reservoir enhancement and post-fracturing productivity. However, large-scale physical simulations directly using acid solutions in fracturing experiments are limited,
Yongchun Zhang +4 more
core +3 more sources
GeofluidsTaking the carbonate of the Majiagou Formation in the Ordos Basin as an example, this paper introduces a method for predicting the S-wave velocity of carbonate based on rock physics modeling.
Xiangzhong Chen +4 more
doaj +3 more sources
Petroleum Exploration and DevelopmentBased on logging, core, thin section and geochemical analysis, the tectonic-lithofacies paleogeographic pattern of first member to third member of Ordovician Majiagou Formation (O1m1–O1m3 for short) in Ordos Basin is reconstructed, and the tectono ...
Shoukang ZHONG +7 more
doaj +4 more sources
Multiple-Stage Injection of Deep Hydrothermal Fluids in the Dolostone Reservoirs of Ordovician Majiagou Formation, Southern Ordos Basin [PDF]
Frontiers in Earth Science, 2022 The Middle Ordovician Majiagou Formation in the southern Ordos Basin develops a set of sub-and peri-tidal carbonate successions that were extensively dolomitized.
Zhaolin Yang +14 more
doaj +3 more sources