Results 211 to 220 of about 565,672 (242)
Some of the next articles are maybe not open access.
Reducing Drilling Costs by Drilling Faster
Proceedings of SPE Annual Technical Conference and Exhibition, 1997Abstract A new synthetic-based Penetration Rate Enhancer designed as an environmentally acceptable alternative to terpenes is shown to be an effective treatment for increasing penetration rates by preventing or minimizing bit balling while drilling active shales prone to forming "gumbo".
Ron Bland +2 more
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A Drilling Contractor's View of Underbalanced Drilling
Proceedings of IADC/SPE Drilling Conference, 2002Abstract This paper is not a technical discussion of under balanced drilling (UBD). Nor is it a filled with "tricks of the trade" advocating a better technical means of drilling wells using UBD. It is a discussion about the best method, from one drilling contractor's view, to execute a safe and productive UBD project.
P.B. Thompson, R.D. Murphy
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Drilling Holes with the Bow-Drill
Technology and Culture, 1970miliar to most carpenters and joiners in Britain, which appears to corroborate the authors' analysis of the action of the ancient Egyptian stone-boring tool. Fitted preferably with a rosehead countersink bit, it is also used one-handed for countersinking. The rotation is started by tilting the brace, thus making use of the gravity couple similar to the
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British Dental Journal, 1997 It is now widely recognised that dentistry based mainly on the restoration of teeth has failed to deliver dental health to our patients. There is an urgent need for GDPs to face up to the full implications of this failure and implement a truly preventive practice philosophy. We must also recognise the particular plight of our patients with very heavily
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1994
The production of a hole in a mechanical component is usually done by using a drill. Although drilling a hole appears to be a simple operation, the accurate drilling of a hole of the right size at the right location, can be difficult. A large number of tools and machines have been designed for the drilling of holes economically, accurately, and quickly,
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The production of a hole in a mechanical component is usually done by using a drill. Although drilling a hole appears to be a simple operation, the accurate drilling of a hole of the right size at the right location, can be difficult. A large number of tools and machines have been designed for the drilling of holes economically, accurately, and quickly,
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Twist Drills and Drilling Processes [PDF]
, 1976 Abstract : This report brings together in one volume the vast information on drills and drilling processes published in numerous journals and technical papers. A review of more than 800 articles was conducted; the result being a collection of 271 of the most valuable articles in the field of drilling from worldwide publications dated 1896 to present. A
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2015
In the epic search for a Northwest Passage, the narratives of explorers often described the Arctic landscape as picturesque or sublime, depending on the place, the circumstances, and the seasons. Ships that carried those intrepid explorers through this new world had ominous names such as the Terror and Erebus, that dark place between Earth and Hell. As
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In the epic search for a Northwest Passage, the narratives of explorers often described the Arctic landscape as picturesque or sublime, depending on the place, the circumstances, and the seasons. Ships that carried those intrepid explorers through this new world had ominous names such as the Terror and Erebus, that dark place between Earth and Hell. As
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Journal of Biomechanics, 1976
Abstract An investigation is described of the drilling process in bone. Experimental results are presented which show the interrelationships among thrust pressure, feed rate, torque, and specific cutting energy for three types of drill bits. The three types of drill bits used included a common surgical twist bit, general purpose twist bits of various
K.L. Wiggins, S. Malkin
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Abstract An investigation is described of the drilling process in bone. Experimental results are presented which show the interrelationships among thrust pressure, feed rate, torque, and specific cutting energy for three types of drill bits. The three types of drill bits used included a common surgical twist bit, general purpose twist bits of various
K.L. Wiggins, S. Malkin
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To Drill Or Not To Drill: A Synthesis of Expert Judgments
2001Petroleum exploration is a costly venture which always involves a great deal of uncertainties and unknown factors. A decision to drill could result in a giant discovery, a modest discovery, or a dry hole. The factors influencing drilling decisions could be of geologic, economic and personal nature. When making a decision based on geologic factors alone,
Luis G. Vargas, Thomas L. Saaty
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2005
Publisher Summary In this chapter, after a brief outline of the floating drilling equipment and subsea systems, the riser components and vessel data are outlined. This chapter also presents various methods of riser analysis. Floating drilling risers are used on drilling semisubmersibles and drilling ships.
Yong Bai, Qiang Bai
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Publisher Summary In this chapter, after a brief outline of the floating drilling equipment and subsea systems, the riser components and vessel data are outlined. This chapter also presents various methods of riser analysis. Floating drilling risers are used on drilling semisubmersibles and drilling ships.
Yong Bai, Qiang Bai
openaire +2 more sources