Results 241 to 250 of about 3,562,404 (304)

A Hybrid ISSA-XGBoost Model for Predicting Wellbore Leakage. [PDF]

Sensors (Basel)
Bai K, Chen J, Yin S, Wei C, Yan Y, Liu J.   +5 more
europepmc   +1 more source

Optimization Research on the Drilling Parameters of the RC-DTH Air Hammer by Employing Smoothed Particle Hydrodynamics. [PDF]

ACS Omega
Qiao J, Shi L, Yan L, Hou Y, Li X, Wei T, Guo J, Liu Z.   +7 more
europepmc   +1 more source

Experimental Study on Grinding for Hole-Making of 2.5D C/SiC Composites Using Diamond Core Drills. [PDF]

Materials (Basel)
Chen B, Liu X, Sun S, Liu R, Quan W, Yi J, Guo Y.   +6 more
europepmc   +1 more source

Risk Scrutiny and Future Opportunities of Robot-Assisted Implant Surgery: A Narrative Review. [PDF]

Int Dent J
Wang G, Lin Y, Zheng X, Shi J, Huang F, Zhao Y, Wen S, Gan Y, Wang Q, Kong J, Lai H, Rong M.   +11 more
europepmc   +1 more source

Root Canal Location Accuracy: Dynamic Navigation Verses Freehand in Extracted Human Molars - A Randomized In Vitro Study. [PDF]

Int Dent J
Chen F, Han T, Guo H, Wang G, Qiu L, Tang J, Li J, Dong L, Huang Y, Wang L, Luo Q, He H, Li H, Xue P.   +13 more
europepmc   +1 more source

Energy Efficiency of Drilling Operations

, 2017
This chapter presents a review of the literature on energy efficiency of drilling operations in mineral industries. It introduces the drilling systems, factors affecting drilling work, and general relations between type of drilling systems and rock properties. First, the basic features of rock drilling and the role of drilling work in energy efficiency
Celal Karpuz, Karpuz, Celal
openaire   +2 more sources

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Effect of penetration force on drilling efficiency for seabed drilling robot

2020 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), 2020
Seabed mineral resources have been discovered on the bottom of the ocean; to utilize them, samples must be obtained and analyzed. In this study, a seafloor robotic explorer that can excavate and sample seafloor soil is developed. In a previous study, we developed a drilling robot that could excavate 650 mm into the ground while being underwater.
Wataru Toyama, Keita Isaka, Kazuki Tsumura, Tomoki Watanabe, Manabu Okui, Hiroshi Yoshida, Taro Nakamura 0001   +6 more
openaire   +1 more source

Experimental investigation on drilling efficiency of a percussive ultrasonic drill

2017 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2017
Drilling is an important method to obtain samples on a minor planet for deep-space exploration. Conventional drilling devices driven by electromagnetic motors usually need large weight on bit to fracture hard rocks. It is a great challenge for conventional drilling devices to drill on a minor planet which has a weak gravitational field.
Deen Bai, Zhijun Zhao, Yubao Cao, Qiquan Quan, He Li 0005, Zongquan Deng   +5 more
openaire   +1 more source

Drilling Performance is a Function of Power at the Bit and Drilling Efficiency

IADC/SPE Drilling Conference and Exhibition, 2012
Abstract Today’s sophisticated data acquisition systems for both surface and downhole drilling data have greatly enhanced the understanding of the basic drilling mechanics and helped in the identification of major dysfunctions particularly harmful downhole vibrations.
Rolf Pessier, Steven Wallace, Hatem Oueslati   +2 more
openaire   +1 more source

Improving Drilling Performance Using Drilling Efficiency Optimization (DEO)

ADIPEC, 2022
Abstract Petroleum Development Oman (PDO) is the leading Exploration and Production company in The Sultanate of Oman, and it delivers the majority of the country's crude oil and natural gas supply. It also has a great focus on delivering excellence, growth, and sustainable value creation within and beyond the Oil and Gas Industry.
Abdullah Al Braiki, Ahmad Taha, Hilal Al Rubaiey, Hashil Al Naabi, Yasin Al Lawati, Anees Al Subhi, Qasim Al Hinai, Mohammed Radwan   +7 more
openaire   +1 more source