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Influence of Heavy Weight Drill Pipe Material and Drill Bit Manufacturing Errors on Stress State of Steel Blades Open
Drilling volumes should be increased in order to increase hydrocarbon production, but this is impossible without the usage of high-quality drilling tools made of modern structural materials. The study has to analyze the design, technologic…
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Finite element modelling of rock mass cutting by cutters for PDC drill bits Open
A finite element model of the process of polycrystalline diamond compact (PDC) drill bit cutters cutting rocks was built, and the rock linear and circular cutting processes for different shapes of PDC drill bit cutters were simulated. The …
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Drill Bit Deformations in Rotary Drilling Systems under Large-Amplitude Stick-Slip Vibrations Open
In oil and gas industry, rotary drilling systems are used for energy exploration and productions. These types of systems are composed of two main parts: mechanical and electrical parts. The electrical part is represented by rotating motor …
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New Artificial Neural Networks Model for Predicting Rate of Penetration in Deep Shale Formation Open
Rate of penetration (ROP) means how fast the drilling bit is drilling through the formations. It is known that in the petroleum industry, most of the well cost is taken by the drilling operations. Therefore, it is very crucial to drill car…
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Analysis of Materials and Modern Technologies for PDC Drill Bit Manufacturing Open
The article presents a review of polycrystalline diamond composite (PDC) drill bit manufacturing technologies and used metals in order to provide surface quality and accuracy as well as to attract a wider range of scientists to find new te…
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Thrust and torque force analysis in the drilling of aramid fibre-reinforced composite laminates using RSM and MLPNN-GA Open
Aramid Fibre Reinforced Plastic composites are difficult to be drilled due to anisotropic material properties. Currently, soft computing techniques are used as alternatives to conventional mathematical models, which is robust and can deal …
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Optimization of Cutting Parameters in Drilling of AISI 304 Stainless Steel Using Taguchi and ANOVA Open
The present work deals with the effect of cutting parameters namely cutting speed, feed rate and helix angle on the tool life. The experiments were performed on drilling of AISI304 steel with carbide drill bits. Design of experiments was p…
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Modeling of burr size in drilling of aluminum silicon carbide composites using response surface methodology Open
Exit burrs produced during various machining processes degrade the product quality and functionality of different parts of assembly. It is essential to select the optimum tool geometry and process parameters for minimizing the burr formati…
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Stochastic modeling for hysteretic bit–rock interaction of a drill string under torsional vibrations Open
This paper aims at constructing a stochastic model for the hysteretic behavior of the nonlinear bit–rock interaction of a drill string under torsional vibrations. The proposed model takes into account the fluctuations of the stick–slip osc…
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Thermo-Mechanical and Delamination Properties in Drilling GFRP Composites by Various Drill Angles Open
This manuscript aims to study the effects of drilling factors on the thermal-mechanical properties and delamination experimentally during the drilling of glass fiber reinforced polymer (GFRP). Drilling studies were carried out using a CNC …
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Preliminary estimation of rock mass strength using diamond bit drilling operational parameters Open
In many mining engineering applications such as prospecting, development, production and grouting, diamond bit drilling is widely used due to high penetration rate, core recovery and its ability to drill with less deviation. It has been we…
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3D Numerical Simulation and Experiment Validation of Dynamic Damage Characteristics of Anisotropic Shale for Percussive-Rotary Drilling with a Full-Scale PDC Bit Open
The lower rate of penetration (ROP) is one of the key technical difficulties during drilling of shale reservoirs. Percussive-rotary drilling (PRD) is crucial for increasing ROP. One of the core problems of ROP optimization for PRD are the …
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Experimental and numerical study of drill bit drop tests on Kuru granite Open
This paper presents an experimental and numerical study of Kuru grey granite impacted with a seven-buttons drill bit mounted on an instrumented drop test machine. The force versus displacement curves during the impact, so-called bit–rock i…
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Enhancing the drilling efficiency through the application of machine learning and optimization algorithm Open
This article presents a novel Artificial Intelligence (AI) workflow to enhance drilling performance by mitigating the adverse impact of drill-string vibrations on drilling efficiency. The study employs three supervised machine learning (ML…
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Dynamic Characteristics of Downhole Bit Load and Analysis of Conversion Efficiency of Drill String Vibration Energy Open
The longitudinal vibration of the drill pipe contains considerable energy which can be used to improve the rock-breaking efficiency during drilling. It is very important to the development of drilling speed-up tools to have a comprehensive…
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WEAR BEHAVIOR OF DRILL BITS IN WOOD DRILLING RESISTANCE MEASUREMENTS Open
The objectives of this study were to investigate the wear behavior of drill bits in wood drilling resistance measurements and to understand how the blunting of the cutting edges may affect the cutting forces and ultimately the measurement …
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Rotary ultrasonic machining of rocks: An experimental investigation Open
Rock drilling is widely used to explore and mine energy resources. It has also been used to extract samples to study the earth’s geological composition and topography and to explore different planets. Percussive drilling is, as of right no…
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Effects of the drill flute number on drilling of a casted AZ91 magnesium alloy Open
This experimental study aims to reveal the effect of the drill flute number on the thrust force, tool wear, tool life, chip morphology, surface hardness and microstructure in the drilling of a cast AZ91 magnesium alloy. The results showed …
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THERMAL ANALYSIS IN DRILLING OF <i>EX VIVO</i> BOVINE BONES Open
Bone drilling is a common procedure in Medicine, mainly in traumatology and orthopedic procedure for fractures fixation and in reconstructive surgery. The success of this surgical procedure is dependent on many factors, namely, on heat gen…
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Measurement of bit-rock interface temperature and wear rate of the tungsten carbide drill bit during rotary drilling Open
Rock drilling is an essential operation in mining industries. Temperature at the bit-rock interface plays a major role in the wear rate of the drill bit. This paper primarily focuses on the wear rate of tungsten carbide (WC) drill bit and …
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Numerical simulation of percussive drilling Open
Summary This paper presents a novel dynamical model to analyze the long‐term response of a percussive drilling system. This departs from existing approaches that usually consider a single activation and bit/rock interaction cycle for the a…
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Drill bit wear monitoring and failure prediction for mining automation Open
This article introduces a novel approach for tricone bit wear condition monitoring and failure prediction for surface mining applications. A successful bit health monitoring system is essential to achieve fully autonomous blasthole drillin…
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Characterization of a New Dry Drill-Milling Process of Carbon Fibre Reinforced Polymer Laminates Open
Carbon Fibre Reinforced Polymer (CFRP) composites are widely used in aerospace applications that require severe quality parameters. To simplify the assembly operations and reduce the associated costs, the current trend in industry is to op…
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Full-scale experimental investigation of the performance of a jet-assisted rotary drilling system in crystalline rock Open
Full-scale drilling experiments (8½ in. bit size) with a high-pressure fluid jet assisted rotary drilling system were performed in hard to drill crystalline rock. Besides the development of novel drill bits and high-pressure components, an…
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Stick-Slip Vibration Suppression in Drill String Using Observer-Based LQG Controller Open
Hydrocarbon exploration and production activities are guaranteed through various operations including the drilling process, which is realized by using rotary drilling systems. The process involves crushing the rock by rotating the drill bi…
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Drilling Process of GFRP Composites: Modeling and Optimization Using Hybrid ANN Open
This paper aims to optimize the machining parameters of the drilling process of woven-glass-fiber reinforced epoxy (WGFRE) composites. It will focus on modeling and optimizing drill spindle speed and feed with different laminate thicknesse…
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Development of mathematical model for prediction of bone drilling temperature Open
During orthopaedic drilling for screw fixation, if temperature rises above a certain level, thermal damage to bone cells occurs. This damage is in the form of cell death and is permanent in nature. The cell death, termed as thermal necrosi…
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Effect of Various Parameters on the Temperature Distribution in Conventional and Diamond Coated Hollow Tool Bone Drilling: A Comparative Study Open
Bone drilling is performed around the world in surgical operations to repair the fractured parts of bones. Significant amount of heat is generated during the bone drilling process which may be one of the causes of thermal necrosis and oste…
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Design and numerical analysis of a large‐diameter air reverse circulation drill bit for reverse circulation down‐the‐hole air hammer drilling Open
Reverse circulation down‐the‐hole (RC‐DTH) air hammer drilling is a fast and cost‐effective method for hard rock drilling. As the air RC drill bit is the heart for RC‐DTH air hammer drilling system to form the reverse circulation, a large‐…
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Rock-Breaking Properties of Multi-Nozzle Bits for Tree-Type Drilling in Underground Coal Mines Open
Tree-type drilling is a new technique for drilling radial tree-type boreholes in coal seams in underground mines using water jets to break the coal. The aim is to drain gas from the coal seams in larger quantities and from larger areas tha…