Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/11941
Title: Large mobile drilling rigs used along the Alaska Pipeline
Authors: Sellmann, P. V. (Paul V.)
Mellor, Malcolm.
Keywords: Alaska
Drilling machinery
Drilling machines
Boring machinery
Boring machines
Drilling vertical-support-member holes
Pipeline
Equipment
Supplies
Frozen ground
Frozen soil
Permafrost
Trans-Alaska Pipeline
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Special report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 78-4.
Description: Special Report
Abstract: The requirement for installing more than 70,00 vertical support members along elevated sections of the Alaska Pipeline resulted in an extremely large drilling program. Several large drilling units, some specially designed, including rotary (auger), percussive, and combination rotary-percussive units, were selected for this job. This selection of equipment and techniques provided the potential to drill in all conceivable material types. An examination of these drills in the field, together with product literature, provided some insight into the characteristics of these drills compared with other commercially available drilling units. The pipeline drilling program provided a major impetus for design and development of new equipment in the area of large rotary-percussive, and percussive drilling units. The pipeline drills in general showed sound design characteristics in weight, power, thrust, torque, and speed. Many of the auger boring heads could benefit from improvements in shape, angles, cutter position, and in consideration of "the center of the hole" problem. Need for work in this area was indicated by drilling rates, as well as by noticeable improvements in some augers following contractors' field modifications.
Rights: Approved for public release; distribution is unlimited.
URI: http://hdl.handle.net/11681/11941
Appears in Collections:Special Report

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