Results 61 to 70 of about 231 (148)

Carbonate reservoir fracture‐cavity system identification based on the improved YOLOv5s deep learning algorithm

Energy Science &Engineering, Volume 12, Issue 6, Page 2643-2660, June 2024.
Flowchart for identifying carbonate fractures and caves based on improved YOLOv5s. Abstract In carbonate reservoirs characterized by the fracture‐cavity system as storage spaces, the drilling process is highly prone to the loss of drilling fluid.
Xiaoyong Feng, Kai Zhao, Jianguo Zhang, Jinkai Wang   +3 more
wiley   +1 more source

Intense Human Activities Induce the Dynamic Changes of Interaction Pattern Between Karst Water‐Quaternary Groundwater in the Basin‐Mountain Coupling Belt Over the Past 60 Years

Water Resources Research, Volume 60, Issue 2, February 2024.
Abstract Karst water are important for water supply and ecological protection. However, climate changes and human activities have caused severe water supply crisis. The Jinci spring, one of the famous karst springs in China, is located at the basin‐mountain coupling belt and dried up since 1994.
Chengcheng Li, Xubo Gao, Xuanli Xiang, Chunfang Jiang, Yan Duan, Wanzhou Wang, Xin Zhang, Ting Tan, Quanrong Wang, Yanxin Wang   +9 more
wiley   +1 more source

Ordovician reservoirs in Fuxian area: Gas accumulation patterns and their implications for the exploration of lower Paleozoic carbonates in the southern Ordos Basin

Energy Geoscience
In recent years, the Fuxian area in the southeastern Ordos Basin has undergone significant exploration, with industrial gas flow tested in wells drilled into the Ordovician marine carbonates.
Ning Gu, Juntao Zhang, Xiaohui Jin, Fei Yang, Lu Liu   +4 more
doaj   +1 more source

Quantitative Interpretation of TOC in Complicated Lithology Based on Well Log Data: A Case of Majiagou Formation in the Eastern Ordos Basin, China

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, Haowei Zhang, Rongji Zhang, Lingxuan Jin, Yuming Liu   +4 more
doaj   +1 more source

Origin and characteristics of grain dolomite of Ordovician Ma55 Member in the northwest of Ordos Basin, NW China

Petroleum Exploration and Development, 2019
The origin of grain dolomite in M55 Member of Ordovician Majiagou Formation in northwestern Ordos Basin was studied by geochemical and petrological tests on core samples.
Xi ZHANG, Tingshan ZHANG, Bianjun LEI, Jingxuan ZHANG, Ji ZHANG, Zhongjun ZHAO, Jinjie YONG   +6 more
doaj   +1 more source

Estimating the Total Organic Carbon in Complex Lithology From Well Logs Based on Convolutional Neural Networks

Frontiers in Earth Science, 2022
The total organic carbon content is an important indicator for evaluating source rocks. The lithology of the Majiagou Formation in the Tao 112 well area in the eastern Ordos Basin is complex and changeable.
Yun He, Zhanyang Zhang, Xixin Wang, Zhenyu Zhao, Wei Qiao   +4 more
doaj   +1 more source

Characteristics and formation mechanism of stratified deformation of Lower Paleozoic faults in Gaojiapu area, eastern Ordos Basin

Shiyou shiyan dizhi
In recent years, exploration breakthroughs have been successively achieved in the strata deeper than the fifth member of the Lower Ordovician Majiagou Formation in the Ordos Basin, revealing its tremendous exploration potential.
Ping CHEN, Mingrui LI, Wei LI, Min QIANG, Pengcheng LU, Xiaowei YU, Wei HAN   +6 more
doaj   +1 more source

Lithological composition and reservoir properties of Lower Ordovician Majiagou formation in the gas field Tabamiao (Ordos Basin, China)

Moscow University Bulletin. Series 4. Geology, 2016
Ordos Basin is concentrated rich areas of coal, natural gas and oil. In last years it is becoming an important mineral resource and energy base of China. To the most well-known and good studied gas fields belong Sulige and Tabamiao, where natural gas takes place in carbonate rocks of Early Ordovician time. As the result of an investigation that made by
openaire   +2 more sources

Genetic types of weathering-induced fractures in carbonate reservoirs in Fuxian area of Ordos Basin and their impact on hydrocarbon enrichment

Youqi dizhi yu caishoulu
The Lower Paleozoic carbonate rocks in the Ordos Basin are characterized by substantial depositional thickness and extensive distribution， with reservoirs exhibiting tight lithology， low porosity， and low permeability.
MAO Jinxin, HE Jianhua, XIE Xinhui, DENG Hucheng, WANG Xia, CAO Feng, XING Zimeng   +6 more
doaj   +1 more source

Transformation of the middle–upper ordovician sedimentary environment of the north China plate under the caledonian tectonic background: a case study of the ordovician majiagou formation in the qishan area

Frontiers in Earth Science
This study documents an abrupt sedimentary and petrographic transition near the top of the Ordovician Majiagou Formation in the Qishan area, southwestern Ordos Basin, North China Plate.
Di Zhao, Di Zhao, Xiang Wei, Rongxi Li, Bangsheng Zhao, Xiaoli Wu, Anquan Xia, Anquan Xia, Kaixin Feng   +8 more
doaj   +1 more source