Results 41 to 50 of about 3,985,421 (167)

[Retracted] Influence of Gestational Hypertension on Cardiovascular Health Behaviors and Factors

Computational Intelligence and Neuroscience, Volume 2022, Issue 1, 2022., 2022
Objective. A survey was conducted to analyze the epidemiological differences in ideal cardiovascular health (CVH) behaviors and factors after delivery in females with and without gestational hypertension (GH) and evaluate the influence of GH on cardiovascular health behaviors and factors. Methods. The present study adopted a cross‐sectional design.
Haiyan Zhao, Yuntao Wu, Junyan Sun, Changhao Zu, Chunyu Ruan, Kai Cui, Honghong He, Shouling Wu, Xiaojing Peng, Rahim Khan   +9 more
wiley   +1 more source

Floor Disturbance and Failure Characteristics of Super‐Large Mining Height Working Face

Geofluids, Volume 2022, Issue 1, 2022., 2022
The failure depth of the working face floor caused by mining is a key parameter to predict water inrush from the working face floor. Extensive research has been conducted on the floor failure zone of the working face. However, in recent years, there have been few studies on the floor failure law of the working face with a super‐large mining height ...
Cunjin Lu, Jinpeng Xu, Hui Zhao, Heng Zhang, Yian Zhang, Mingyue Chen, Wensong Wang   +6 more
wiley   +1 more source

Probabilistic Evaluation of Hydraulic Fracture Performance Using Ensemble Machine Learning

Geofluids, Volume 2022, Issue 1, 2022., 2022
Evaluation of hydraulic fracture (HF) performances is critical to develop unconventional resources such as tight oil and gas. We present a probabilistic evaluation approach that integrates ensemble machine learning with Monte Carlo simulation. In the method, we employ the ensemble learning to develop a predictive model between well productivity and its
Xiaoping Xu, Xianlin Ma, Jie Zhan, Yating Wang   +3 more
wiley   +1 more source

Pore Structures of the Lower Permian Taiyuan Shale and Limestone in the Ordos Basin and the Significance to Unconventional Natural Gas Generation and Storage

Geofluids, Volume 2022, Issue 1, 2022., 2022
In the Ordos Basin, multiple sets of coal seams, organic‐rich shale, and limestone are well developed in the Permian Taiyuan Formation, which are favorable targets for collaborative exploration of various types of unconventional natural gas resources, including coalbed methane, shale gas, and tight gas.
L. Zhang, Q. Zhao, C. Wu, Z. Qiu, Q. Zhang, Y. Wang, D. Liu, D. Dong, S. Zhou, Jing Wu   +9 more
wiley   +1 more source

Evolution of prototype basin and change of tectonic-sedimentary pattern in Paleozoic, Ordos Basin

Shiyou shiyan dizhi, 2022
The Ordos Basin is a craton basin developed based on the Precambrian rift system during Permian. It has experienced two stages of evolution including the Early Paleozoic craton marginal depression and Late Paleozoic intra-craton depression.
Faqi HE, Fubin WANG, Liguo GUO, Chuan AN
doaj   +1 more source

Dolomitization of the Ordovician subsalt Majiagou Formation in the central Ordos Basin, China: fluid origins and dolomites evolution [PDF]

Petroleum Science, 2020
AbstractThe Middle Ordovician subsalt Majiagou Formation in the Ordos Basin comprises pervasively dolomitized shallow marine limestone and is a major reservoir rich in natural gas resources. Four types of dolomite matrix and cement were identified based on petrographic textures: (very) finely crystalline, non-planar to planar-s matrix dolomite (Md1 ...
Ying Xiong, Li-Chao Wang, Xiu-Cheng Tan, Yun Liu, Ming-Jie Liu, Zhan-Feng Qiao   +5 more
openaire   +1 more source

Geochemical Characteristics of Formation Water in Carbonate Reservoirs and Its Indication to Hydrocarbon Accumulation

Geofluids, Volume 2022, Issue 1, 2022., 2022
The migration path of formation water plays an indispensable role in hydrocarbon accumulation and preservation. The hydrodynamic field controls the content of various ions in formation water and is an important participant in hydrocarbon evolution. Formation water can basically be used to judge the preservation status of oil/gas reservoirs, especially ...
Zhen Sun, Zhen Yang, Xiaoning He, Cixuan Wan, Gang He, Qiang Ren, Shihu Zhao, Wei Cheng, Sisi Chen, Zhehui Jin   +9 more
wiley   +1 more source

Constraints on Diagenetic Fluid Source and Genesis in Tight Dolostone Reservoir of Submember Ma55 of Ordovician Majiagou Formation in Northwestern Ordos Basin, China: Evidence from Petrology and Geochemistry

Geofluids, Volume 2022, Issue 1, 2022., 2022
Diagenetic fluids is one of the most important reservoir modifiers, their differences can result in various petrography, storage capacity, and geochemical characteristics, so clarifying the diagenetic fluids is vital for understanding dolostone origin.
Baiqiang Li, Zhenzhen Wu, Taofa Zhou, Bin Chen, Qicong Wang, Xiaoli Zhang, Fan Yang   +6 more
wiley   +1 more source

Optimization of Acid Fracturing Process for Carbonate Reservoirs in Daniudi Gas Field

Energies, 2022
The Daniudi gas field is located in the Ordos Basin’s northern section of the Yishan slope. The intertidal–subtidal depositional environment dominates the lithology of the Ma55 sub-member, resulting in a stable, thick-layered dark gray–gray–black ...
Yongchun Zhang, Haijun Mao, Hao Zhang, Yueli Li, Yanfang Jiang, Jiarui Li   +5 more
doaj   +1 more source

The effect of meteoric water on the very fine crystalline dolomite reservoir in the shallow burial zone: A case study of the Ma55 submember of Majiagou Formation in Ordos Basin

Frontiers in Energy Research, 2023
The meteoric water has obviously changed the physical properties of dolostone reservoirs in the vertical vadose zone and the horizontal phreatic zone, but its influence on the dolostone reservoirs in the shallow burial zone beneath the phreatic surface ...
Haoxiang Lan, Min Guo, Min Guo, Meiyan Fu, Meiyan Fu, Hucheng Deng, Hucheng Deng, Jon Gluyas, Wang Xu, Wang Xu, Mingyuan Tang, Dong Wu, Dong Wu, Yilin Li, Hengwei Guo   +14 more
doaj   +1 more source