General Considerations for Drill System Design

General Considerations for Drill System Design PDF Author: Malcolm Mellor
Publisher:
ISBN:
Category : Boring
Languages : en
Pages : 44

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Book Description
Drilling systems are discussed in general terms, component functions common to all systems are identified, and a simple classification is drawn up in order to outline relations between penetration, material removal, hole wall support, and ground conditions. Energy and power requirements for penetration of ice and frozen ground are analyzed for both mechanical and thermal processes. Power requirements for removal of material and for hoisting of drill strings are considered, and total power requirements for complete systems are assessed. Performance data for drilling systems working in ice and frozen ground are reviewed, and results are analyzed to obtain specific energy values. Specific energy data are assembled for drag-bit cutting, normal impact and indentation, liquid jet attack, and thermal penetration. Torque and axial force capabilities of typical rotary drilling systems are reviewed and analyzed. The overall intent is to provide data and quantitative guidance that can lead to systematic design procedures for drilling systems for cold regions.

General Considerations for Drill System Design

General Considerations for Drill System Design PDF Author: Malcolm Mellor
Publisher:
ISBN:
Category : Boring
Languages : en
Pages : 44

Get Book Here

Book Description
Drilling systems are discussed in general terms, component functions common to all systems are identified, and a simple classification is drawn up in order to outline relations between penetration, material removal, hole wall support, and ground conditions. Energy and power requirements for penetration of ice and frozen ground are analyzed for both mechanical and thermal processes. Power requirements for removal of material and for hoisting of drill strings are considered, and total power requirements for complete systems are assessed. Performance data for drilling systems working in ice and frozen ground are reviewed, and results are analyzed to obtain specific energy values. Specific energy data are assembled for drag-bit cutting, normal impact and indentation, liquid jet attack, and thermal penetration. Torque and axial force capabilities of typical rotary drilling systems are reviewed and analyzed. The overall intent is to provide data and quantitative guidance that can lead to systematic design procedures for drilling systems for cold regions.

CRREL Technical Publications, 1950-1975

CRREL Technical Publications, 1950-1975 PDF Author: Cold Regions Research and Engineering Laboratory (U.S.)
Publisher:
ISBN:
Category : Arctic regions
Languages : en
Pages : 284

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Book Description


CRREL Technical Publications

CRREL Technical Publications PDF Author: Cold Regions Research and Engineering Laboratory (U.S.)
Publisher:
ISBN:
Category : Engineering
Languages : en
Pages : 178

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Special Report

Special Report PDF Author:
Publisher:
ISBN:
Category : Arctic regions
Languages : en
Pages : 20

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Technical Report

Technical Report PDF Author: Cold Regions Research and Engineering Laboratory (U.S.)
Publisher:
ISBN:
Category : Frozen ground
Languages : en
Pages : 610

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Book Description


Monthly Catalogue, United States Public Documents

Monthly Catalogue, United States Public Documents PDF Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 944

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Monthly Catalog of United States Government Publications

Monthly Catalog of United States Government Publications PDF Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1388

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CONTROL SYSTEMS, ROBOTICS AND AUTOMATION – Volume XIX

CONTROL SYSTEMS, ROBOTICS AND AUTOMATION – Volume XIX PDF Author: Heinz D. Unbehauen
Publisher: EOLSS Publications
ISBN: 1848261586
Category :
Languages : en
Pages : 496

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Book Description
This Encyclopedia of Control Systems, Robotics, and Automation is a component of the global Encyclopedia of Life Support Systems EOLSS, which is an integrated compendium of twenty one Encyclopedias. This 22-volume set contains 240 chapters, each of size 5000-30000 words, with perspectives, applications and extensive illustrations. It is the only publication of its kind carrying state-of-the-art knowledge in the fields of Control Systems, Robotics, and Automation and is aimed, by virtue of the several applications, at the following five major target audiences: University and College Students, Educators, Professional Practitioners, Research Personnel and Policy Analysts, Managers, and Decision Makers and NGOs.

Handbook of Ground Water Development

Handbook of Ground Water Development PDF Author: Roscoe Moss Company
Publisher: John Wiley & Sons
ISBN: 9780471856115
Category : Technology & Engineering
Languages : en
Pages : 514

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Book Description
The definitive work on the subject, it offers you comprehensive and accurate coverage of the theory and techniques of ground water development. Provides not only a general overview of the topic with applications but also incorporates sufficient detail to be of use to professionals involved in any phase of ground water. Divided into three parts, the text traces the progression of the study of ground water from its origin through its development and exploitation. Part one deals mainly with the nature of ground water and where it can be found. Part two considers the parameters related to water well design and construction. In part three, there is a thorough review of well and well field operation, including monitoring for environmental protection. Although the focus is on high-capacity ground water producing installations, most of the material is also applicable to lower-yield wells.

Greenland Ice Core

Greenland Ice Core PDF Author: Chester C. Langway
Publisher: American Geophysical Union
ISBN: 0875900577
Category : Greenland Ice Sheet Program
Languages : en
Pages : 127

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Book Description