Showing 881 - 900 results of 2,575 for search '"Rock ', query time: 0.13s Refine Results
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    Impact of Rock Cuttings on Downhole Fluid Movement in Polycrystalline Diamond Compact (PDC) Bits, Computational Fluid Dynamics, Simulation, and Optimization of Hydraulic Structures by Lihong Wei, Jaime Honra

    Published 2025-01-01
    “…The flow occurring at the bottom of a polycrystalline diamond compact (PDC) drill bit involves a complex process made up of drilling fluid and the drilled rock cuttings. A thorough understanding of the bottom-hole flow conditions is essential for accurately evaluating and optimizing the hydraulic structure design of the PDC drill bit. …”
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    Analysis on the Difference of Energy Evolution in the Process of Energy Storage Failure of Strong Coal Rush Rock Samples under Different Adaptive Modification Regulation Measures by Fangfang Zhang

    Published 2022-01-01
    “…Current energy to “release” after accumulating + first for the mechanism of rock bursts occurred in analysis of the strategy is accepted by many scholars, based on the existing means of prevention and control of percussive ground pressure, from the angle of the prevention and control of design of the mechanism of impact ground pressure energy regulation, namely, “weakened after the first release +” softened water injection measures and “lead after the first release +” drilling pressure relief measures, for the study of mining under the action of a strong shock tendentiousness rock energy regulatory mechanism; based on rock mechanics experiment, the analysis under different modification measures should be variant energy storage mechanisms of induced damage evolution of rock energy. …”
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  13. 893

    Investigating Multiphase Flow Phenomena in Fine-Grained Reservoir Rocks: Insights from Using Ethane Permeability Measurements over a Range of Pore Pressures by Eric Aidan Letham, Robert Marc Bustin

    Published 2018-01-01
    “…Blockage of these pores cuts off the main fluid flow pathways in the rock, thereby drastically decreasing effective permeability to ethane gas.…”
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  14. 894

    Stability Analysis and Derived Control Measures for Rock Surrounding a Roadway in a Lower Coal Seam under Concentrated Stress of a Coal Pillar by Zhuoyue Sun, Yongzheng Wu, Zhiguo Lu, Youliang Feng, Xiaowei Chu, Kang Yi

    Published 2020-01-01
    “…Finally, stability control measures for the rock surrounding the roadway in the lower coal seam were proposed. …”
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    Double-layered wrap-around sensor network for three-dimensional positioning of acoustic emission sources and its effect on monitoring crack propagation in rock samples by Jing Yang, Zonglong Mu, Guangjian Liu, Shaokun Gong, Atif Javed, Jinglong Cao, Bofei Yang, Fang Yuan

    Published 2018-09-01
    “…The present sensor arrangement in a cubic way for monitoring crack propagation in rock samples exhibits shortfalls of blind monitoring zone and large deviation. …”
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  19. 899

    The control of effective source rocks on the distribution of hydrocarbon reservoirs in a lacustrine rift-basin: insights from a 3D basin modeling study by Bang Zeng, Jianhua Qu, Zhongrong Mi, En Xie, Hui Fu, Sibo Yang, Yang Shi, Meijun Li

    Published 2025-02-01
    “…To overcome these shortcomings, 3D basin modeling was employed to assess the influence of effective source rocks on the distribution of hydrocarbons. The findings reveal that reservoirs in lacustrine rift-basins are closely linked to effective source rocks, exhibiting lateral migration patterns that form rings around the source kitchen, as well as vertical migration patterns concentrated above the effective source rock centers. …”
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  20. 900

    Efficient Excavation and Support Cooperation Technology for Surrounding Rock of Deep Buried Long-Distance and Large Section Gob-Side Roadway: A Case Study by Houqiang Yang, Changliang Han, Nong Zhang, Xudong Li, Yitao Liu, Wentao Liu, Kai Song, Yuxin Guo, Wei Yao

    Published 2022-01-01
    “…However, it is still difficult to control the stability of surrounding rock in gob-side roadway under deeper mining depth and more complex stress environment. …”
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