Results 21 to 30 of about 912,950 (301)

Evaluating the maximum rate of penetration for drilling borehole in soft coal seam

Energy Science & Engineering, 2020
Most coal seams in China are characterized by high‐gas pressure and high‐gas content, which seriously threaten the safety of coal mines. Gas extraction is an effective measure for preventing gas disasters. However, the drilling process in soft coal seams
Shuo Yang, Guangcai Wen, Fazhi Yan, Mingjie Zhang, Xusheng Zhao   +4 more
doaj   +1 more source

Data Knowledge Dual-Driven Rate of Penetration Prediction Method for Horizontal Wells

Applied Sciences, 2023
The prediction and optimization of the rate of penetration (ROP) for horizontal wells are more complicated than for vertical wells, but most of the current ROP prediction studies are for vertical wells, which cannot be adapted to the complex drilling ...
Xiuwen Zhao, Hu Yin, Qian Li
doaj   +1 more source

A Note on Predicting Rate of Penetration Using Machine Learning Models [PDF]

JES: Journal of Engineering Sciences
Rate of Penetration (ROP) is a critical parameter influencing drilling efficiency and accelerating field development. Although conventional ROP models (e.g., Bourgoyne, Hareland) provided reasonable results, they often struggle with limited accuracy and ...
Ahmad Husseiny, Attia Attia, Ahmed Hagag
doaj   +1 more source

Experimental Investigation of Inhibitive Drilling Fluids Performance: Case Studies from United States Shale Basins

Energies, 2020
Shale formations are attractive prospects due to their potential in oil and gas production. Some of the largest shale formations in the mainland US, such as the Tuscaloosa Marine Shale (TMS), have reserves estimated to be around 7 billion barrels ...
Nabe Konate, Saeed Salehi
doaj   +1 more source

Interpretable Feature Construction and Incremental Update Fine-Tuning Strategy for Prediction of Rate of Penetration

Energies, 2023
Prediction of the rate of penetration (ROP) is integral to drilling optimization. Many scholars have established intelligent prediction models of the ROP.
Jianxin Ding, Rui Zhang, Xin Wen, Xuesong Li, Xianzhi Song, Baodong Ma, Dayu Li, Liang Han   +7 more
doaj   +1 more source

EXPERIMENTAL STUDY OF THE EFFECT OF COOLING LUBRICATING FLUIDS ON PENETRATION RATE IN A HARD AND SOFT ROCK DRILLING PROCESS

Rudarsko-geološko-naftni Zbornik, 2021
Rock drilling is the process of penetrating and crushing rocks, which is characterized by the low rate of penetration (ROP) and drilling rate because of the amount of cuttings that remain in the drilling environment and the thermal stresses generated at ...
Shahrokh Khosravimanesh, Masoud Cheraghi Seifabad, Reza Mikaeil, Raheb Bagherpour   +3 more
doaj   +1 more source

Measurements of Penetration and Detoxification of PS II Herbicides in Whole Leaves by a Fluorometric Method [PDF]

, 1984
The effect of herbicides that inhibit the photosynthetic electron transport at the photosystem II acceptor side has been analyzed in whole plants by using a fluorometric method.
Gräber, Peter, Kötter, C., Renger, Gernot, Voss, M.   +3 more
core   +1 more source

Experimental research into the effect of some operation factors and rock properties on the rate of penetration [PDF]

, 2020
Purpose. The purpose of this research is to investigate the effect of weight on bit (WOB), rotary speed (RPM), and some rock properties on the rate of penetration (ROP). Methods.
Ali, Mahrous A.M., Boghdady, Gamal Y., Mohamed, Ahmed S., Sayed, Mohamed A., Yassien, Mohamed A.   +4 more
core   +1 more source

Cuttings Carrying Behavior of Coring Tools Based on Fluent⁃EDEM Coupling Model

Shiyou jixie
To improve cuttings carrying efficiency in coring operation of ultra⁃deep wells， the cuttings carrying performance of coring tools under complex conditions was studied.
Yang Liuqing, Liu Bin, Liu Bin
doaj   +3 more sources

Influence of corrosion rate on rust penetration in concrete

Shenzhen Daxue xuebao. Ligong ban, 2023
Rust penetration in pore structure of concrete cover happens after the reinforcement corrosion, which impedes the cracking development. To improve the accuracy of deducing the corrosion level of reinforcement from the crack width, reinforcements are ...
HONG Shuxian, ZHENG Fan, XING Feng, DONG Biqin   +3 more
doaj   +1 more source