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Author : Wen-der Tsai
Publisher :
ISBN 13 :
Total Pages : 654 pages
Book Rating : 4.:/5 (89 download)
Download or read book Drill Geometry Models and Dynamics of Drilling written by Wen-der Tsai and published by . This book was released on 1977 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jane-Lin Wang
Publisher :
ISBN 13 :
Total Pages : 398 pages
Book Rating : 4.3/5 (91 download)
Download or read book Development of New Drilling Force Models for Improving Drill Point Geometries written by Jane-Lin Wang and published by . This book was released on 1994 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Marcos Silveira
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (82 download)
Download or read book A Comprehensive Model of Drill-string Dynamics Using Cosserat Rod Theory written by Marcos Silveira and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The drill-strings used in drilling operate under extreme condi-tions, therefore, an accurate understanding of their dynamics is necessary and has attracted much interest. Although a bottom hole assembly (BHA) is to a great ex- tent responsible for the dynamics of the system, the in uence of the drill-pipes has been increasingly neglected by current models. Their dynamics and geometrical behaviour should be better analysed for a deeper understanding of underlying phe- nomena. For example, under stick-slip oscillations, the torque on the drill-string may cause torsional buckling of the drill-pipes, incurring in helical con guration, in which the apparent length is reduced, a ecting the forces at the bit{rock interface. With such behaviour and interactions in mind, this work focuses on elaborating a comprehensive mathematical model to investigate the dynamics of drill-strings, with attention to the drill-pipes section. Firstly, lower dimensional models are used to analyse the stick-slip limit cycle and its limits of existence. Then, a model developed for MEMS is used as a base for a comprehensive model using the formu- lation of Cosserat rods. Relevant boundary conditions are applied and a numerical simulation procedure is established. Simulations are performed for a range of sce- narios under stick-slip occurrence, and the behaviour of the drill-pipes is analysed. Focus is then given to axial vibrations with bit-bounce and the in uence on stick- slip, later to lateral vibrations with whirling motion of the drill-pipes, and nally to helical con gurations, taken by the drill-string under combined torsional, axial and lateral loads, showing the consequent shortening of the drill-string.
Author : Iheanyi Eronini Eronini
Publisher :
ISBN 13 :
Total Pages : 422 pages
Book Rating : 4.:/5 (29 download)
Download or read book A Dynamic Model for Optimization and Control of Rock Drilling written by Iheanyi Eronini Eronini and published by . This book was released on 1978 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert King
Publisher : Springer Science & Business Media
ISBN 13 : 1468464213
Total Pages : 473 pages
Book Rating : 4.4/5 (684 download)
Download or read book Handbook of High-Speed Machining Technology written by Robert King and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States now spends approximately $115 billion annually to perform its metal removal tasks using conventional machining technology. Of this total amount, about $14 billion is invested in the aerospace and associated industries. It becomes clear that metal removal technology is a very important candidate for rigorous investigation looking toward improvement of productivity within the manufacturing system. To aid in this endeavor, work has begun to establish a new scientific and technical base that will provide principles upon which manufacturing decisions may be based. One of the metal removal areas that has the potential for great economic advantages is high-speed machining and related technology. This text is concerned with discussions of ways in which high-speed machining systems can solve immediate problems of profiling, pocketing, slotting, sculpturing, facing, turning, drilling, and thin-walled sectioning. Benefits to many existing programs are provided by aiding in solving a current management production problem, that of efficiently removing large volumes of metal by chip removal. The injection of new high-rate metal removal techniques into conventional production procedures, which have remained basically unchanged for a century, presents a formidable systems problem, both technically and man agerially.The proper solution requires a sophisticated, difficult process whereby management-worker relationships are reassessed, age-old machine deSigns reevaluated, and a new vista of product/process planning and design admitted.
Author : Diana Rincón
Publisher :
ISBN 13 :
Total Pages : 276 pages
Book Rating : 4.3/5 (91 download)
Download or read book Coupled Force and Vibration Modeling of Drills with Complex Cross Sectional Geometries written by Diana Rincón and published by . This book was released on 1994 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Thirumalaiswamy Radhakrishnan
Publisher :
ISBN 13 :
Total Pages : 440 pages
Book Rating : 4.:/5 (89 download)
Download or read book Drill Point Geometry Optimization and On-line Monitoring of Drill Condition written by Thirumalaiswamy Radhakrishnan and published by . This book was released on 1980 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : George Phiching Hsu
Publisher :
ISBN 13 :
Total Pages : 258 pages
Book Rating : 4.:/5 (891 download)
Download or read book A Development of Mathematical Models of Twist Drill written by George Phiching Hsu and published by . This book was released on 1983 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jia'en Lin
Publisher : Springer Nature
ISBN 13 : 9819919649
Total Pages : 7600 pages
Book Rating : 4.8/5 (199 download)
Download or read book Proceedings of the International Field Exploration and Development Conference 2022 written by Jia'en Lin and published by Springer Nature. This book was released on 2023-08-05 with total page 7600 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on reservoir surveillance and management, reservoir evaluation and dynamic description, reservoir production stimulation and EOR, ultra-tight reservoir, unconventional oil and gas resources technology, oil and gas well production testing, and geomechanics. This book is a compilation of selected papers from the 12th International Field Exploration and Development Conference (IFEDC 2022). The conference not only provides a platform to exchanges experience, but also promotes the development of scientific research in oil & gas exploration and production. The main audience for the work includes reservoir engineer, geological engineer, enterprise managers, senior engineers as well as professional students.
Author : Martha Belem Saldivar Márquez
Publisher : Springer
ISBN 13 : 3319157477
Total Pages : 294 pages
Book Rating : 4.3/5 (191 download)
Download or read book Analysis and Control of Oilwell Drilling Vibrations written by Martha Belem Saldivar Márquez and published by Springer. This book was released on 2015-03-09 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports the results of exhaustive research work on modeling and control of vertical oil well drilling systems. It is focused on the analysis of the system-dynamic response and the elimination of the most damaging drill string vibration modes affecting overall perforation performance: stick-slip (torsional vibration) and bit-bounce (axial vibration). The text is organized in three parts. The first part, Modeling, presents lumped- and distributed-parameter models that allow the dynamic behavior of the drill string to be characterized; a comprehensive mathematical model taking into account mechanical and electric components of the overall drilling system is also provided. The distributed nature of the system is accommodated by considering a system of wave equations subject to nonlinear boundary conditions; this model is transformed into a pair of neutral-type time-delay equations which can overcome the complexity involved in the analysis and simulation of the partial differential equation model. The second part, Analysis, is devoted to the study of the response of the system described by the time-delay model; important properties useful for analyzing system stability are investigated and frequency- and time-domain techniques are reviewed. Part III, Control, concerns the design of stabilizing control laws aimed at eliminating undesirable drilling vibrations; diverse control techniques based on infinite--dimensional system representations are designed and evaluated. The control proposals are shown to be effective in suppressing stick-slip and bit-bounce so that a considerable improvement of the overall drilling performance can be achieved. This self-contained book provides operational guidelines to avoid drilling vibrations. Furthermore, since the modeling and control techniques presented here can be generalized to treat diverse engineering problems, it constitutes a useful resource to researchers working on control and its engineering application in oil well drilling.
Author : Mohamed Haddar
Publisher : Springer Science & Business Media
ISBN 13 : 3642371434
Total Pages : 653 pages
Book Rating : 4.6/5 (423 download)
Download or read book Design and Modeling of Mechanical Systems written by Mohamed Haddar and published by Springer Science & Business Media. This book was released on 2013-03-12 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 5th International Congress on Design and Modeling of Mechanical Systems (CMSM) was held in Djerba, Tunisia on March 25-27, 2013 and followed four previous successful editions, which brought together international experts in the fields of design and modeling of mechanical systems, thus contributing to the exchange of information and skills and leading to a considerable progress in research among the participating teams. The fifth edition of the congress (CMSM ́2013), organized by the Unit of Mechanics, Modeling and Manufacturing (U2MP) of the National School of Engineers of Sfax, Tunisia, the Mechanical Engineering Laboratory (MBL) of the National School of Engineers of Monastir, Tunisia and the Mechanics Laboratory of Sousse (LMS) of the National School of Engineers of Sousse, Tunisia, saw a significant increase of the international participation. This edition brought together nearly 300 attendees who exposed their work on the following topics: mechatronics and robotics, dynamics of mechanical systems, fluid structure interaction and vibroacoustics, modeling and analysis of materials and structures, design and manufacturing of mechanical systems. This book is the proceedings of CMSM ́2013 and contains a careful selection of high quality contributions, which were exposed during various sessions of the congress. The original articles presented here provide an overview of recent research advancements accomplished in the field mechanical engineering.
Author : Sergii Glazunov
Publisher : Cambridge Scholars Publishing
ISBN 13 : 1527542564
Total Pages : 512 pages
Book Rating : 4.5/5 (275 download)
Download or read book Modelling Emergency Situations in the Drilling of Deep Boreholes written by Sergii Glazunov and published by Cambridge Scholars Publishing. This book was released on 2019-10-31 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: The era of easily acquiring oil and gas is over. Now, to extract these resources, deep vertical and curvilinear, off-shore and ground-based boreholes are drilled in inclement climate conditions and in complex heterogeneous tectonic rocks. Additional novelties have also been assimilated into these technologies by the shale revolution. The techniques and methods of borehole drivage are developing so fast that scientific understanding and substantiation have no time to refine them. Therefore, as a rule, different unpredictable emergency effects and overall failures accompany these procedures. The gravest of these are buckling of the drill strings, their resonant vibrations, their sticking during dragging and twisting, the self-triggering of torsional relaxation vibration, and the self-excitation of forward, backward, and superfast bit whirlings. To analyse these phenomena, this volume elaborates new mathematic models and numerical methods. On the basis of these, a special software was created, which allowed new results concerning the peculiarities of the affected phenomena to be achieved. The book will be of interest to borehole designers and specialists in mechanics and applied mathematics.
Author : Viktor P. Astakhov
Publisher : CRC Press
ISBN 13 : 1466584343
Total Pages : 890 pages
Book Rating : 4.4/5 (665 download)
Download or read book Drills written by Viktor P. Astakhov and published by CRC Press. This book was released on 2014-04-08 with total page 890 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a presentation that balances theory and practice, Drills: Science and Technology of Advanced Operations details the basic concepts, terminology, and essentials of drilling. The book addresses important issues in drilling operations, and provides help with the design of such operations. It debunks many old notions and beliefs while introducing scientifically and technically sound concepts with detailed explanations. The book presents a nine-step drilling tool failure analysis methodology that includes part autopsy and tool reconstruction procedure. A special feature of the book is the presentation of special mechanisms of carbide (e.g. cobalt leaching) and polycrystalline (PCD) tool wear and failure presented and correlated with the tool design, manufacturing, and implementation practice. The author also introduces the system approach to the design of the drilling system formulating the coherency law. Using this law as the guideline, he shows how to formulate the requirement to the components of such a system, pointing out that the drilling tool is the key component to be improved. Teaching how to achieve this improvement, the book provides the comprehensive scientific and engineering foundations for drilling tool design, manufacturing, and applications of high-performance tools. It includes detailed explanations of the design features, tool manufacturing and implementation practices, metrology of drilling and drilling tools, and the tool failure analysis. It gives you the information needed for proper manufacturing and selection of a tool material for any given application.
Author : Vinod Kumar Varala
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (962 download)
Download or read book Modeling of Horizontal Drilling written by Vinod Kumar Varala and published by . This book was released on 2016 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: While majority of today’s oil wells employ directional drilling technology (deviated, extended reach and horizontal wells), a thorough understanding of the drill string dynamics is necessary to increase the drilling efficiency. Wellbore in such wells spans long horizontal distances through the shale to extract oil and natural gas effectively. Very long slender drill pipes transmit the required torque and cutting force through miles of distance from the earth’s surface to the drill bit. Drill string is subjected to different loads and torques which can cause coupled random excitations and failure of its components (drill pipes, bit, sensor tools and wellbore) eventually. If left unnoticed, these vibrations can cause stuck pipe and reduced rate of penetration, both of which are heavily cost dependent. Identifying the conditions causing harmful vibrations hence would significantly reduce cost and time. Controlling the drill string and bottom hole assembly is one way of mitigating the dynamic instability, which is currently done by means of controlling the rotational speed, torque applied and axial force applied to the drill string. This article presents modeling of horizontal drilling and the comparison of horizontal and vertical drill string dynamics. Drill string components are discretized into lumped elements based on their curvature. A vertical wellbore structure with same drill string components is considered for comparison. The computations are performed in MATLAB. Results and discussions are presented in the later part of the report.
Author : Hiroshi Shikata
Publisher :
ISBN 13 :
Total Pages : 584 pages
Book Rating : 4.:/5 (89 download)
Download or read book Evaluation of Drill Performance Via Dynamic Data System Methodology written by Hiroshi Shikata and published by . This book was released on 1979 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Faruk Civan
Publisher : Elsevier
ISBN 13 : 0080471439
Total Pages : 1135 pages
Book Rating : 4.0/5 (84 download)
Download or read book Reservoir Formation Damage written by Faruk Civan and published by Elsevier. This book was released on 2011-08-30 with total page 1135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reservoir Formation Damage, Second edition is a comprehensive treatise of the theory and modeling of common formation damage problems and is an important guide for research and development, laboratory testing for diagnosis and effective treatment, and tailor-fit- design of optimal strategies for mitigation of reservoir formation damage. The new edition includes field case histories and simulated scenarios demonstrating the consequences of formation damage in petroleum reservoirsFaruk Civan, Ph.D., is an Alumni Chair Professor in the Mewbourne School of Petroleum and Geological Engineering at the University of Oklahoma in Norman. Dr. Civan has received numerous honors and awards, including five distinguished lectureship awards and the 2003 SPE Distinguished Achievement Award for Petroleum Engineering Faculty. Petroleum engineers and managers get critical material on evaluation, prevention, and remediation of formation damage which can save or cost millions in profits from a mechanistic point of view State-of-the-Art knowledge and valuable insights into the nature of processes and operational practices causing formation damage Provides new strategies designed to minimize the impact of and avoid formation damage in petroleum reservoirs with the newest drilling, monitoring, and detection techniques
Author : Sagar Chandrakant Kadam
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (11 download)
Download or read book Static and Dynamic Analysis of Twist Drills Subjected to Cutting Loads written by Sagar Chandrakant Kadam and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Continuous models for a fluted twist drill are developed to study its static and dynamic bending characteristics. The static model is numerically simulated within Matlab for point loads at the free end of a twist drill. The bending curves are plotted and the bending stiffness of a twist drill is estimated. Effect of orientation of the spirally fluted cross-section at the fixed end on end deflection is studied. Characteristic bending curves for one pitch length of drill are plotted and region of minimum deflection is identified. Dynamic model is numerically simulated in Matlab over a range of rotating speeds and the first two natural frequencies and corresponding mode shapes are identified for the twist drill. New formulation for estimation of work stiffness is proposed considering the interaction of drill with the hole-wall. A new lumped mass model for studying lateral vibration behavior of the twist drill is developed using this work stiffness. The bending stiffness and fundamental natural frequency estimated using continuous models above and work stiffness calculated using proposed formulation are used in this new model. This model is numerically simulated in Matlab for different set of parameters and drill orbital motions are obtained. Results are analyzed to study the influence of various parameters on dynamics of drill and an explanation is given for generation of lobed holes and drill wandering phenomenon and surface roughness. Torsional stiffness of set of twist drills in clockwise and counter clockwise directions are measured experimentally in order to verify the stiffness symmetry. Appearance of cutting resistance when direction of twist coincides with the direction of cutting leads to periodic change in torsional stiffness of the twist drill during actual drilling. Lumped mass model is developed wherein the effect of this periodic change in torsional stiffness on torsional vibration is studied. Numerical simulations are carried out in Matlab for stiffness change of bilinear and combined linear and half sinusoidal nature. Lateral deflection of drill against hole wall is always associated with a small amount of angular twist. Lumped mass model to study bending-torsional coupling is developed. Numerical simulations are carried out in Matlab and results are compared with results for uncoupled torsional model.
