Results 11 to 20 of about 231 (148)

Characteristics, formation and evolution of pre-salt dolomite reservoirs in the fifth member of the Ordovician Majiagou Formation, mid-east Ordos Basin, NW China

Petroleum Exploration and Development, 2019
The characteristics and formation of the pre-salt dolomite reservoirs in the fifth member of Ordovician Majiagou Formation in the mid-east Ordos Basin are investigated through observation of cores and thin sections, and geochemical analysis.
Siyi FU, Chenggong ZHANG, Hongde CHEN, Anqing CHEN, Junxing ZHAO, Zhongtang SU, Shuai YANG, Guo WANG, Wentian MI   +8 more
doaj   +4 more sources

Restoration of formation processes of dolomite reservoirs based on laser U-Pb dating: A case study of Ordovician Majiagou Formation, Ordos Basin, NW China

Petroleum Exploration and Development, 2022
To address the issue of non-unique interpretation of dolomite reservoir diagenetic and porosity evolution in the previous qualitative or semi-quantitative studies, we investigate two dolomite reservoir types, i.e.
Jingao ZHOU, Zhou YU, Dongxu WU, Junfeng REN, Daofeng ZHANG, Shaoyi WANG, Chen YIN, Yuxin LIU   +7 more
doaj   +4 more sources

Reservoir characteristics and distribution of the Majiagou Formation in the Fuxian area of Ordos Basin, China

Energy Geoscience
The Majiagou Formation in the Fuxian area of the southeastern Ordos Basin has undergone a complex diagenetic evolution history under the influence of eustacy and the Caledonian karstification, resulting in several complex reservoir types.
Ning Gu, Juntao Zhang, Xiaohui Jin, Jiaqi Yang, Fei Yang, Lu Liu   +5 more
doaj   +4 more sources

Diagenetic Evolution of Marine Carbonate Reservoirs: A Case Study from M51-2 Submember of Middle Ordovician Majiagou Formation in SE Ordos Basin, China

Geofluids, 2023
In the Yan’an gas field, southeast of Ordos Basin, the discovered natural gas reserves are 114 billion cubic meters. Highly productive gas reservoirs were formed in paleokarst.
Haiyan Wu, Ting Liang, Chao Gao, Yanjun Wu, Hongxia Cao, Jun Yu, Fenfei Bai, Jianbo Sun, Keyong Li, Yanqin Guo   +9 more
doaj   +2 more sources

Vertical zonation of weathered crust ancient karst and reservoir evaluation and prediction—A case study of M55–M51 sub-members of Majiagou Formation in gas fields, central Ordos Basin, NW China

Petroleum Exploration and Development, 2013
The M55–M51 sub-members of the Middle Ordovician Majiagou Formation in the gas fields of the central Ordos Basin were taken as a case to analyze the vertical zonation characteristics of weathered crust ancient karst and to evaluate and predict reservoirs
Jiang HE, Shaoxian FANG, Fanghao HOU, Ronghui YAN, Zhongjun ZHAO, Jian YAO, Xiujun TANG, Guorong WU   +7 more
doaj   +3 more sources

Geochemical characteristics and origin of dolomite: A case study from the middle assemblage of Ordovician Majiagou Formation Member 5 of the west of Jingbian Gas Field, Ordos Basin, North China

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, Jianfeng SHOU, Anjiang SHEN, Xingning WU, Yongsheng WANG, Yuanyuan HU, Yin ZHU, Dongxiao WEI   +7 more
doaj   +3 more sources

New understandings on gas accumulation and major exploration breakthroughs in subsalt Ma 4 Member of Ordovician Majiagou Formation, Ordos Basin, NW China

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, Xujie GUO, Zhenyu ZHAO, Shengli XI, Jufeng WANG, Wei SONG, Junfeng REN, Xingning WU, He BI   +8 more
doaj   +3 more sources

Characteristics and the formation mechanism of the dolomite reservoirs for Lower Ordovician Majiagou Formation, central Ordos Basin, China

Frontiers in Earth Science
The distribution of anhydrite contributes to the formation of high-quality dolomite reservoirs. However, the lower part of the Lower Ordovician Majiagou Formation in the central Ordos Basin shows significant natural gas potential despite in anhydrite ...
Kun Tian, Jinsong Zhou, Xiao Yin, Chunqi Xue, Jun Cao, Ling Ma, Weibo Zhao   +6 more
doaj   +2 more sources

Multiple-Stage Injection of Deep Hydrothermal Fluids in the Dolostone Reservoirs of Ordovician Majiagou Formation, Southern Ordos Basin

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, Zhaolin Yang, Xinshe Liu, Xinshe Liu, Xu Han, Xu Han, Hu Zhou, Hu Zhou, Sha Zhan, Sha Zhan, Xiaojun Gui, Xiaojun Gui, Jihong Niu, Jihong Niu, Ke Wang   +14 more
doaj   +2 more sources

Thermal History and Hydrocarbon Accumulation Stages in Majiagou Formation of Ordovician in the East-Central Ordos Basin

Energies
The marine carbonates in the Ordovician Majiagou Formation in the Ordos Basin have significant exploration potential. Research has focused on their thermal history and hydrocarbon accumulation stages, as these are essential for guiding the exploration ...
Hua Tao, Junping Cui, Fanfan Zhao, Zhanli Ren, Kai Qi, Hao Liu, Shihao Su   +6 more
doaj   +2 more sources