نتایج جستجو برای: drilling process

تعداد نتایج: 1323028  

Journal: :journal of chemical and petroleum engineering 2014
abdolnabi hashemi afshin ghanbarzadeh siamak hosseini

the dogleg severity is one of the most important parameters in directional drilling. improvement of these indicators actually means choosing the best conditions for the directional drilling in order to reach the target point. selection of high levels of the dogleg severity actually means minimizing well trajectory, but on the other hand, increases fatigue in drill string, increases torque and d...

2007
Scott F. Miller Albert J. Shih

Friction drilling uses a rotating conical tool to penetrate the workpiece and create a bushing in a single step without generating chips. This research investigates the threedimensional (3D) finite element modeling (FEM) of large plastic strain and hightemperature work-material deformation in friction drilling. The explicit FEM code with temperature-dependent mechanical and thermal properties, ...

2013
B. B. Satapathy

In order to service and grow in the present day of global competition, every manufacturing concern focuses mostly on two factors i.e. productivity and quality. Laser drilling is a popular non-traditional machining technique for producing large numbers of cooling holes of various sizes (less than mm diameter) and angles in modern aerotech components such as turbine blades, injector nozzles, and ...

2009
Amor Messaoud Claus Weihs

Deep hole drilling methods are used for producing holes with a high length-to-diameter ratio, good surface finish and straightness. The process is subject to dynamic disturbances that is classified as either chatter vibration or spiralling. In this work, nonlinear time series modeling is used to setup an on-line modeling approach of the time varying dynamics of the process. An on-line monitorin...

Journal: :Computers & Industrial Engineering 2011
Susana Ferreiro Basilio Sierra Itziar Irigoien Eneko Gorritxategi

Drilling process is one of the most important operations in aeronautic industry. It is performed on the wings of the aeroplanes and its main problem lies with the burr generation. At present moment, there is a visual inspection and manual burr elimination task subsequent to the drilling and previous to the riveting to ensure the quality of the product. These operations increase the cost and the...

2014
Pingting Liu Zhiyu Huang Hao Deng Rongsha Wang Shuixiang Xie

Oil-based drilling fluid is used more and more in the field of oil and gas exploration. However, because of unrecyclable treating agent and hard treatment conditions, the traditional treating technologies of waste oil-based drilling fluid have some defects, such as waste of resource, bulky equipment, complex treatment processes, and low oil recovery rate. In this work, switchable deoiling agent...

2017
Zhiqiang Liang Suyan Zhang Xibin Wang Haixin Guo Tianfeng Zhou Li Jiao Pei Yan

During the micro-drilling process of stainless steel, the wear, fracture, and breakage of the micro-drill easily occur. Micro-drill geometry parameters have significant influence on the drilling performance of the micro-drill. Nowadays, the helical point micro-drill is proposed and its improved drilling performance is validated by some researchers. In this study, to analyze the effect of geomet...

Journal: :اکو هیدرولوژی 0
یونس نوراللهی دانشکدة علوم و فنون نوین دانشگاه تهران حسین یوسفی دانشکدة علوم و فنون نوین دانشگاه تهران سعیده صادقی دانشکدة علوم و فنون نوین دانشگاه تهران سعید محمد زاده بینا دانشکدة انرژی و محیط زیست، دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران سارا صادقی دانشکدة علوم و فنون دریایی، دانشگاه آزاد اسلامی واحد تهران شمال

in this paper, the results of surface and ground water quality monitoring during drilling of three deep exploratory wells in geothermal project in north west of sabalan in meshkinshahr are analyzed. the region has been investigated by various researchers to generate electricity using geothermal energy. drilling in deep geothermal projects, a variety of materials such as cement, bentonite, barit...

Journal: :The International Journal of Advanced Manufacturing Technology 2016

Journal: :QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 2011

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید