Results 31 to 40 of about 105,423 (180)

Characterization, Classification, and Evaluation of the Reservoir Pore Structure Features of Lacustrine Fine-Grained Sedimentary Rocks. A Case Study of the Fourth Member of the Shahejie Formation in the Chenguanzhuang Area of the Southern Gently Sloping Zone of the Dongying Depression, Bohai Bay Basin

Frontiers in Earth Science, 2022
With the development of unconventional oil and gas exploration “from sea to land,” lacustrine fine-grained sedimentary rocks (FSR) have gradually attracted the attention of scholars and become an important topic in the field of unconventional oil and gas,
Yiming Yang, Jun Peng, Tianyu Xu, Yubin Wang, Yao Zeng   +4 more
doaj   +1 more source

Influence of the microstructure and roughness of weakness planes on the strength anisotropy of a foliated clay-rich fault gouge

, 2021
Cataclastic rocks, as clay-rich fault gouges, are commonly present in brittle rock masses when fault zones appear during geological engineering projects.
J. Insua-Arévalo, Meaza Tsige, J. L. Sánchez‐Roldán, E. Rodríguez-Escudero, J. Martínez-Díaz   +4 more
semanticscholar   +1 more source

Resolving Cl and SO4 Profiles in a Clay-Rich Rock Sequence

Procedia Earth and Planetary Science, 2013
The chloride and sulfate concentration profiles in a 260 m thick clay-rich Mesozoic sediment sequence have been analyzed by various methods. Chloride data generally indicate a good consistency between different methods if anion exclusion is accounted for in leaching tests.
Wersin, Paul, Waber, Niklaus, Mazurek, Martin, Mäder, Urs, Gimmi, Thomas, Rufer, Daniel, Traber, Daniel   +6 more
openaire   +1 more source

Characteristics and environment indication of mud shale undergone low temperature metamorphism: a case study of Neoproterozoic Binggounan Formation, Hongliugou Ⅰ section, Altyn Tagh fault

Shiyou shiyan dizhi, 2021
The Neoproterozoic Binggounan Formation mud shale in the Hongliugou Ⅰ section on the northwestern margin of the Altyn Tagh fault was deposited in a passive continental margin.
Yixiong QIAN, Chenglin CHU, Yuejun LI, Yi WANG, Zhongpei ZHANG, Xin YANG, Wangpeng LI, Hongqiang MA, Yue CHEN, Zhibing SHAO, Xinbing ZHUANG   +10 more
doaj   +1 more source

Utilizing landsat-8 sensor operational land image data for hydrothermal alteration mapping within Anka Schist Belt, northwestern Nigeria [PDF]

Zbornik radova Departmana za geografiju, turizam i hotelijerstvo, 2020
Exploring for mineral deposits within the Anka Schist Belt involves the use of traditional geological techniques such as geochemical and geophysical studies that are very expensive and time consuming. There is therefore need for a better alternative that
Aliyu Ohinowi Umaru, Aliyu Kankara Ibrahim   +1 more
doaj   +1 more source

Subcritical crack growth behavior of clay‐rich unconventional tight rocks under water‐saturated conditions

Energy Science & Engineering, 2022
AbstractHydraulic fracturing is the most widely used primary method for the stimulation of unconventional oil and gas resources. While knowledge of hydraulic fracture parameters is critical to reservoir productivity, predicting the fracture initiation is important for determining the complexity of the fracture network.
Wei Yan, Xin Huang, Nguu Dickson Muchiri, Han Cao   +3 more
openaire   +1 more source

Measurement of Cl− : Br− Ratios in the Porewater of Clay-Rich Rocks—A Comparison of the Crush-and-Leach and the Paper-Absorption Methods

, 2018
Characterization of porewater chemistry in low-permeability, clay-rich rocks provides insights into solute transport mechanisms and the origin and residence time of porewater.
M. Celejewski, D. Barton, T. Al
semanticscholar   +1 more source

The Research Progress and Problems of Rare Earth Elements of Rare Earth Rich Clay Rock Permian Xuanwei Formation in the Yunnan–Guizhou Border Region

Kuangchan zonghe liyong, 2022
A set of rare earth rich clay rocks is widely distributed in the lower part of The Permian Xuanwei Formation and upper the Emeishan basalt in the Yunnan-Guizhou border region.
Xiaoli Jiang, Daxing Gong, Jiayun Zhou, Enyuan Tian, Wenwen Chao   +4 more
doaj   +1 more source

Chemo‐mechanical behavior of clay‐rich fault gouges affected by CO₂‐brine‐rock interactions [PDF]

Greenhouse Gases: Science and Technology, 2018
AbstractThe impact of long‐term CO2‐brine‐rock interactions on the frictional properties of faults is one of the main concerns when ensuring safe geological CO2 storage. Mineralogical changes may alter the frictional strength and seismogenic potential of pre‐existing faults bounding a storage complex. However, most of these reactions are too slow to be
Elisenda Bakker, John Kaszuba, Sabine den Hartog, Suzanne Hangx   +3 more
openaire   +3 more sources

Lithofacies characteristics and reservoir capacity of fine-grained sedimentary rocks of second member of Qianfoya Formation in Yuanba area, Sichuan Basin

Shiyou shiyan dizhi
The shale oil and gas exploration potential of the Jurassic Qianfoya Formation in the Sichuan Basin is promising. However, there is still a lack of understanding regarding the basic sedimentary characteristics and development patterns of fine-grained ...
Jun PENG, Xinyi ZHANG, Tianyu XU, Lixue CHENG, Kun ZHANG, Bin LI   +5 more
doaj   +1 more source