Forces required to roll an idealized drill bit across a Coulomb plastic material

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dc.contributor.advisorCheatham, John B., Jr.
dc.creatorBiggs, Michael Don
dc.date.accessioned2016-04-21T12:01:31Z
dc.date.available2016-04-21T12:01:31Z
dc.date.issued1968
dc.description.abstractThis thesis presents a systematic method for determining the forces on a simplified roller bit. The kinematics of an actual roller bit drilling in rock is complex; nevertheless, it is desirable to obtain an accurate analytical model. As a preliminary study, the roller bit is replaced in this thesis by a simple, two-dimensional bit and the rock is replaced by a Coulomb plastic material. Results from previous work, plus additional assumptions, were incorporated into a computer program to determine the forces required to move the bit in a specified manner. Twelve problems were worked to test the program. By studying similar simplified drilling problems, accompanied by supporting laboratory work, one could eventually obtain an accurate analytical model for drilling of an actual roller bit. This could lead to the compilation of a catalog of results which, in turn, would allow selection of the optimum drill bit for any given situation.
dc.format.digitalOriginreformatted digitalen_US
dc.format.extent56 ppen_US
dc.identifier.callnoThesis M.E. 1968 BIGGSen_US
dc.identifier.citationBiggs, Michael Don. "Forces required to roll an idealized drill bit across a Coulomb plastic material." (1968) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/89118">https://hdl.handle.net/1911/89118</a>.
dc.identifier.digitalRICE0155en_US
dc.identifier.urihttps://hdl.handle.net/1911/89118
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.titleForces required to roll an idealized drill bit across a Coulomb plastic material
dc.typeThesis
dc.type.materialText
thesis.degree.departmentMechanical Engineering
thesis.degree.disciplineEngineering
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science
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