Results 71 to 80 of about 231 (148)

Ordovician stratigraphy and sedimentary characteristics of Caojiagou section in Qishan County, southern margin of Ordos Basin

open access: yesYouqicang pingjia yu kaifa, 2022
The Caojiagou section in Qishan County, Shaanxi Province is located in the southern margin of the Ordos Basin. The well-exposed section deposited complete Ordovician strata and developed various sedimentary types, and its location has convenient ...
CHEN Qiang   +5 more
doaj  

Pore Types and Dolomite Reservoir Genesis of the Fifth Member of the Ordovician Majiagou Formation in the Central and Eastern Ordos Basin

open access: yesApplied Sciences
The Ordovician dolomite in the Ordos Basin is an important natural gas reservoir. Exploring dolomite genesis and the factors influencing reservoir characteristics is essential for deep carbonate rock exploration.
Shilei Chen, Rong Dai, Shunshe Luo
doaj   +1 more source

Genesis and source of natural gas in Well Mitan-1 of Ordovician Majiagou Formation, middle-eastern Ordos Basin, China

open access: yesJournal of Natural Gas Geoscience
The Well Mitan-1 has achieved a major breakthrough in the exploration of Ordovician subsalt natural gas in the mid-eastern Ordos Basin, demonstrating a high-yield industrial gas flow in fourth member of the Majiagou Formation of Ordovician (O1m4). Despite this success, there are ongoing disputes regarding the origin of the natural gas found in Well ...
Qiang Meng   +7 more
openaire   +2 more sources

Experimental Study on the Acid Fracturing Fracture Propagation Law of a Fractured Carbonate Reservoir in the Majiagou Formation

open access: yesProcesses
Acid 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
openaire   +1 more source

Genetic Types and Source of the Upper Paleozoic Tight Gas in the Hangjinqi Area, Northern Ordos Basin, China

open access: yesGeofluids, 2017
The molecular and stable isotopic compositions of the Upper Paleozoic tight gas in the Hangjinqi area in northern Ordos Basin were investigated to study the geochemical characteristics.
Xiaoqi Wu   +5 more
doaj   +1 more source

Sedimentary and Early Diagenetic Responses to the Huaiyuan Movement During the Early–Middle Ordovician Transition in the Ordos Basin, North China

open access: yesGeosciences
The early Paleozoic Huaiyuan Movement created a major unconformity in the Ordos Basin, significantly influencing sedimentation and early diagenesis in both the overlying and underlying strata near the unconformity.
Hao Quan   +8 more
doaj   +1 more source

Multiple tests for identifying hydraulic conductivities of south and north boundary faults at Ganhe field, Huozhou Coal Electricity Group Co., Ltd, China

open access: yesGeomatics, Natural Hazards & Risk, 2018
Hydraulic conductivities of faults influence the mining design and safety of a coalmine badly. Results of field and indoor tests on hydraulic conductivities of the boundary faults in Ganhe coalfield in China are illustrated.
Jifeng Liu   +4 more
doaj   +1 more source

Origin of Dolomite in the Majiagou Formation (Ordovician) of the Liujiang Basin, China: Evidence from Crystal Structure, Isotope and Element Geochemistry

open access: yesMinerals
Research on dolomite has long been central in geoscience, yet understanding the origin of Middle Ordovician dolomite in the northeast of the North China Platform remains limited. Based on this, this study focuses on dolomite of Majiagou Formation in Liujiang Basin, and analyzes its genetic process.
Huaiyu Xue, Jianping Qian, Wentan Xu
openaire   +1 more source

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