Results 161 to 170 of about 905,932 (309)

Research on Precise Identification of Rock Strength Based on Bolt Drilling Parameters

Energy Science &Engineering, EarlyView.
Drilling detection test platform. ABSTRACT During roadway excavation, the presence of weak interlayers and fractured rock masses significantly affects roof stability. To achieve timely and effective roadway support, it is crucial to identify and predict different rock types based on drilling signals from roof bolters.
Qiang Zhu, Sheng Biao Wang, Da Jiang Wen, Chong‐Yu Song, Kang Zhou   +4 more
wiley   +1 more source

Analysis of water-resisting ability of aquiclude in coal seam floor based on GIS and entropy weight method: a case study of Longfeng coal mine. [PDF]

Sci Rep
Jiang E, Li B, Kong X, Zhang W, Che L, Yang Y, Wang Z.   +6 more
europepmc   +1 more source

Quantifying Parametric Influence on Cuttings Transport in Deviated Deep Wells Using Global Sensitivity Analysis Methods

Energy Science &Engineering, EarlyView.
Cuttings transport simulation workflow. ABSTRACT Efficient cuttings transport is essential for wellbore stability and minimizing non‐productive time in deviated and horizontal wells. This study applies global sensitivity analysis (GSA) to evaluate the influence of 14 drilling parameters on cuttings transport using WellPlanTM hydraulic simulations ...
Esraa A. Refaie, Said K. El‐Sayed, Ahmed Z. Noah, Mostafa M. Abdelhafiz   +3 more
wiley   +1 more source

Numerical analysis on the drilling force of pneumatic impactors under different working conditions and structural parameters. [PDF]

Sci Rep
Li D, Tong L, Huang Z, Xu X, Wang S, Mao J, Zhu H, Deng Y, Chen X.   +8 more
europepmc   +1 more source

Organic Geochemical Characterization and Exploration Prospects of Hydrocarbon Source Rocks in Nepal

Energy Science &Engineering, EarlyView.
It provides a more detailed introduction to the current situation of oil and gas exploration in Nepal, as well as the properties and distribution characteristics of source rocks. ABSTRACT This study aims to evaluate the hydrocarbon generation potential and exploration prospects of hydrocarbon source rocks in the Dailekh to Dang–Tansen area of Nepal ...
Guoqiang Zhang, Rui Wang, Yinglie Li, Xinhe Wu, Yanming Qu   +4 more
wiley   +1 more source

Study of the mechanism of enhanced gas extraction by pressure relief and permeability enhancement in protective mining in a coal seam group. [PDF]

Sci Rep
Jianguo Z, Man W, Banghua Y, Leilei SI, Zhihui W, Zhaofan C, Benqing Y, Zhe P.   +7 more
europepmc   +1 more source

Investigation of the Dynamic Evolution Mechanism of Bed Separation in Karst Aquifers and Risk Assessment of Water Inrush

Energy Science &Engineering, EarlyView.
This study reveals the temporal and spatial evolution law of roof separation under the karst aquifer and the dynamic water inrush mechanism of roof separation. The FAHP–EWM–CRITIC combination weighting method was established to obtain the risk zoning of bed separation water inrush in a karst landform mining area. ABSTRACT Coalfields in northern Guizhou
Xilong Zhu, Lulin Zheng, Bo Li, Weide Ren, Xiong Liu, Ximin Zhou   +5 more
wiley   +1 more source

Fine Detection Method of Strata Information While Drilling-From the Perspective of Frequency Concentrated Distribution for Torque. [PDF]

Sensors (Basel)
Cheng J, Sun X, Wan Z, Zhang X, Xing K, Yi J.   +5 more
europepmc   +1 more source

Characteristics of Lacustrine Diamictite and Analysis of Diagenetic Reservoir Facies in the Neogene Lower Youshashan Formation in the Dafengshan Tectonic Belt in the Qaidam Basin

Energy Science &Engineering, EarlyView.
Based on field outcrop data, core descriptions, comprehensive thin section data (plain, cast, and fluorescent), scanning electron microscopy, whole rock analysis via X‐ray diffraction, physical property tests, element logging, core recording, and oil pilot tests, we propose utilizing a mature and practical three component classification method for ...
Lin Xie, Chang Liu, Hui He, Xianming Li, Mingqiu Hou, Pengshan Ma, Yu‐Jianjun Xue, Liang Qiao   +7 more
wiley   +1 more source

Disaster-causing mechanism and control technology of interlayer rock breakage in gently inclined close distance coal seams mining. [PDF]

Sci Rep
Yuchi X, Du X, Shu P, Yu L, Lei W, Yang W, Zhang Z.   +6 more
europepmc   +1 more source