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The Statistical Analysis Of Drill Bit Swarfs
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Book Synopsis The Statistical Analysis of Drill Bit Swarfs by : Helen Chan (M.S.)
Download or read book The Statistical Analysis of Drill Bit Swarfs written by Helen Chan (M.S.) and published by . This book was released on 2012 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Firearms and toolmarks identification have been practiced for many years. Recently, the field has been criticized for the lack of scientific basis and statistical foundation compared to other forensic science fields because of the subjectivity in rendering a conclusion on a toolmark analysis. This research was undertaken to provide a potential way of building a strong scientific foundation with quantifiable error rate estimates. The method used for collecting data can be done without any special instrumentation or software application. The statistical analysis works with most types of vector data. The estimated error rates for the classification of debris, known as swarfs, for five drill bits were 6.90% and 3.97% for hold-out-one cross validation and bootstrap, respectively.
Book Synopsis Data Analytics for Drilling Engineering by : Qilong Xue
Download or read book Data Analytics for Drilling Engineering written by Qilong Xue and published by Springer Nature. This book was released on 2019-12-30 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the signal processing and data mining challenges encountered in drilling engineering, and describes the methods used to overcome them. In drilling engineering, many signal processing technologies are required to solve practical problems, such as downhole information transmission, spatial attitude of drillstring, drillstring dynamics, seismic activity while drilling, among others. This title attempts to bridge the gap between the signal processing and data mining and oil and gas drilling engineering communities. There is an urgent need to summarize signal processing and data mining issues in drilling engineering so that practitioners in these fields can understand each other in order to enhance oil and gas drilling functions. In summary, this book shows the importance of signal processing and data mining to researchers and professional drilling engineers and open up a new area of application for signal processing and data mining scientists.
Book Synopsis Grain Size Analysis of Drill Bit Cuttings by : James William Owens
Download or read book Grain Size Analysis of Drill Bit Cuttings written by James William Owens and published by . This book was released on 1971 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Time Series Analysis of Drill Bit Forces by : Bernt Sigve Aadnøy
Download or read book Time Series Analysis of Drill Bit Forces written by Bernt Sigve Aadnøy and published by . This book was released on 1985 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Statistical Investigation on the Effect of Drill Bit Geometric Parameters on Its Quality by : Solayappan Chidambaram
Download or read book Statistical Investigation on the Effect of Drill Bit Geometric Parameters on Its Quality written by Solayappan Chidambaram and published by . This book was released on 2000 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Drilling Data Vortex by : Carlos Damski
Download or read book Drilling Data Vortex written by Carlos Damski and published by Genesis Publishing and Services Pty Limited. This book was released on 2014-11-10 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: In today's world, traditional methods of drilling oil wells don't work. Yesterday's practices are being superseded by a universal trend towards the extensive use of historical and real-time data to understand, learn and predict all well intervention operations. This book explores the impact of data analytics on well operations. Drawn from the author's extensive experience in data analysis, it examines, in easily understandable terms, today's data management processes. The book explores issues related to: Basic concepts of data management for drilling; Methods of using data as a basis for improving and optimizing process control; Achieving a common understanding of the issues involved among information technology personnel and field engineers; A roadmap for the implementation of a drilling process improvement system; Business Intelligence as the ultimate goal of any data management process; Discussions about data acquisition, quality control, storage, retrieval and analyses; Map intelligence; Understanding operational time and trouble analyses; learning curve, technical limit and benchmarking; Real business cases to illustrate the concepts explored in the book. The book is designed for a broad audience, including drilling personnel, managers, data analysts, and all professionals involved in the use of data to improve drilling operations.
Book Synopsis A Methodology to Identify Root Cause of Drill Bit Failure from Surface Drilling Data and Bit Images by : Ysabel Josephine Katharina Witt-Doerring
Download or read book A Methodology to Identify Root Cause of Drill Bit Failure from Surface Drilling Data and Bit Images written by Ysabel Josephine Katharina Witt-Doerring and published by . This book was released on 2021 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polycrystalline diamond compact (PDC) drill bits are exposed during drilling operations to various downhole conditions, ranging from benign (normal) conditions to various states of dysfunction. These include stick slip, whirl, bit bounce, and structural overload when drilling heterogeneous formations. It is well-known that these conditions can lead to PDC damage and eventual failure. However, little work has been published describing PDC damage modes and their origins. A workflow is introduced in this thesis to locate the point of “bit failure” from an analysis of relevant surface data, with key information provided by the PDC dull images. The root cause of the failure is then inferred from this analysis. This information can be used during well planning for optimized bit selection and BHA design, and for drilling parameter and tool selection guidance. It can also be used to optimize future bit runs, improving ROP and extending bit life, through observation of suitable drilling parameters
Book Synopsis Dynamic analysis of drill bit interaction with a transveresely isotropic rock by : Kirk Eldon Christensen
Download or read book Dynamic analysis of drill bit interaction with a transveresely isotropic rock written by Kirk Eldon Christensen and published by . This book was released on 1987 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of drill bit performance taking into account the in situ stresses by :
Download or read book Evaluation of drill bit performance taking into account the in situ stresses written by and published by . This book was released on 1906 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: O presente estudo descreve uma correlação entre o desempenho obtido por brocas de perfuração e o estado de tensões atuante na formação rochosa localizada imediatamente abaixo do fundo do poço. Os dados de desempenho de brocas de seis poços perfurados na costa marítima brasileira foram coletados e analisados. Tendo em vista reduzir o empirismo associado com este tipo de análise, é implementado um estudo que considera o perfil geomecânico do poço. O perfil geomecânico de uma dada formação rochosa é composto de suas propriedades mecânicas (módulo de Young, relação de Poisson, resistência à compressão simples, ângulo de atrito interno etc.), das pressões dos fluidos das formações e das tensões totais in situ. A dissertação mostra a sistemática utilizada para avaliar as tensões no fundo do poço através de um programa de elementos finitos 3D. Através destas tensões é possível definir um índice de plastificação à frente da broca de perfuração e o rendimento da mesma é avaliado levando este índice em conta. Alguns dos poços analisados foram perfurados em águas profundas, sendo que os resultados obtidos até o momento mostraram um grande potencial para a melhor compreensão de altos e baixos rendimentos com respeito à taxa de penetração da broca, de uma maneira racional. Baseados nesta análise novos estudos para avaliação de brocas poderão ser implementados indicando que reduções significativas de custo de perfuração poderão ser obtidas.
Book Synopsis Analysis of the Wear of Oil Well Drill Bits by : Rafid Kadhim Abbas
Download or read book Analysis of the Wear of Oil Well Drill Bits written by Rafid Kadhim Abbas and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Study of Drill Bit Cutter Wear and the Forces They Encounter by : Luke Restorick
Download or read book The Study of Drill Bit Cutter Wear and the Forces They Encounter written by Luke Restorick and published by . This book was released on 1997 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1986 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Diffraction Focusing Velocity Analysis and Drill Bit Tracking by SWD by : Baichun Sun
Download or read book Diffraction Focusing Velocity Analysis and Drill Bit Tracking by SWD written by Baichun Sun and published by . This book was released on 2013 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: The motivation: Seismic-while-drilling (SWD) utilises drill bit vibrations as a seismic source to obtain a reverse VSP profile, which can be used to calibrate the surface seismic image, predict infront-of-bit geo-hazards, and/or for general imaging around the bore hole. However, using the drill bit as a source has known issues of narrow band spectrum and weak energy; the extent of these issues varies with different types of drill bits. As such, different data processing and imaging methods might be needed for different drill bits. In this work, we try to estimate formation velocity based on drill bit position and to locate the drill bit in the cross correlation domain, so as to test the viability of using a diamond impregnated drill bit as an effective seismic source in hard rock imaging.
Book Synopsis Analysis of the Wear of Oil Wells Drill Bits by : Rafid Kadhim Abbas
Download or read book Analysis of the Wear of Oil Wells Drill Bits written by Rafid Kadhim Abbas and published by . This book was released on 2015 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical and Field Data Analysis of Drill Stem Vibration by : Mohammed Fayez Al Dushaishi
Download or read book Numerical and Field Data Analysis of Drill Stem Vibration written by Mohammed Fayez Al Dushaishi and published by . This book was released on 2015 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Drill stem vibration is a major cause of premature failure of drill stem components and drilling inefficiency. In severe cases, drill stem vibration may lead to wellbore instability that could lead to increased operational cost. Drill stem vibrations are affected by design decisions and the drilling environment. Examples are; bottom hole assembly configurations, selection of operational parameters, and frequent changes in lithology. Vibration modeling, analysis of vibration data, and specialized vibration reduction tools are methods in use to prevent and mitigate severe vibrations. A drill stem vibration model was created using nonlinear strain formulation which couples the axial, lateral and torsional vibration of the entire drill stem. The model includes the effect of geometric stiffening arising from the applied axial load, two new developed vibration reduction tools used to reduce drill stem vibrations and fluid flow inside and outside the drill stem taking into account two different fluid rheological models. The obtained equation of motion was assembled using the finite element analysis which was solved numerically in Matlab®. The sensitivity analysis using Euler-Bernoulli and Timoshenko models, showed that the Euler-Bernoulli assumption is satisfactory when modeling drill stem vibrations at typical drilling conditions. Analyzing three adjacent wells in the North Sea with different bottom hole assembly and recorded vibration data, revealed that including drill stem vibration reduction tools reduces drill stem vibration and decreases stick-slip tendency. Including drilling fluid circulation, by imposing dynamic pressures on the inside and outside of the drill stem, affect lateral natural frequencies. High flow rate and wrong selection of total flow area at the drill bit could lead to vibrations"--Abstract, page iii.
Book Synopsis Application of Statistical Learning Models to Predict and Optimize Rate of Penetration of Drilling by : Chiranth Manjunath Hegde
Download or read book Application of Statistical Learning Models to Predict and Optimize Rate of Penetration of Drilling written by Chiranth Manjunath Hegde and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling the rate of penetration of the drill bit has been essential to optimizing drilling operations. Optimization of drilling - a cost intensive operation in the oil and gas industry- is essential, especially during downturns in the oil and gas industry. This thesis evaluates the use of statistical learning models to predict and optimize ROP in drilling operations. Statistical Learning Models can range from simple models (linear regression) to complex models (random forests). A range of statistical learning models have been evaluated in this thesis in order to determine an optimum method for prediction of rate of penetration (ROP) in drilling. Linear techniques such as regression have been used to predict ROP. Special linear regression models such as lasso and ridge regression have been evaluated. Dimension reduction techniques like principal components regression are evaluated for ROP prediction. Non-linear algorithms like trees have been introduced to address the low accuracy of linear models. Trees suffer from low accuracy and high variance. Trees are bootstrapped and averaged to create the random forests algorithm. Random forests algorithm is a powerful algorithm which predicts ROP with high accuracy. A parametric study was used to determine the ideal training sets for ROP prediction. It was conclude that data within a formation forms the best training set for ROP prediction. Parametric analysis of the length of the training set revealed that 20% of the formation interval depth was enough to train an accurate predictor for ROP. The ROP model built using statistical learning models were then used as an equation to optimize ROP. An optimization algorithm was used to compute ideal values of input feature to improve ROP in the test set. Surface controllable input features were varied in an effort to improve ROP. ROP was improved to save a predicted total of 22 hours of active drilling time using this method. This thesis introduces statistical learning techniques for predicting and optimizing ROP during drilling. These methods use input data to model ROP. Input features (surface parameters which are controllable on the rig) are then changed to optimize ROP. This methodology can be utilized for reducing nonproductive time (NPT) in drilling, and applied to optimize drilling procedures
Book Synopsis Statistical study for optimization the from bosch applied statistical distributions of lifetime and speed measurements for masonry and hammer drill bits by : Robert Kaiser
Download or read book Statistical study for optimization the from bosch applied statistical distributions of lifetime and speed measurements for masonry and hammer drill bits written by Robert Kaiser and published by . This book was released on 2011 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:
