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    • Microhole drilling technology utilizing a golden section search algorithm

    Metadata Updated: January 20, 2025

    A fundamental issue in microhole drilling is that delivering high weight-on-bit (WOB), high torque rotational horsepower to a conventional drill bit does not scale down to the hole sizes necessary to realize the envisioned cost savings An optimization algorithm called a golden section search (GSS) was used to systematically identify the preferred WOB for a given set of conditions. This research focused on implementing and evaluating two low WOB drilling technologies for microhole drilling: - Laser-assisted mechanical drill, which was tested in the laboratory - Lightly modified commercial off-the-shelf (COTS) percussive hammer, which was tested in a limited field test.

    Data were collected for microhole GSS using WOB optimization via simulation as well as at the Blue Canyon Dome Site in Socorro, NM.

    Information on the attached files and folders are as follows: - the .tdms files are LabView data files, which can be opened within Excel using a .tdms add-in or using a Matlab .tdms converter - the .tdms_index files are part of the .tdms file structure - sampling rate, column headers, and length data within the .tdms files follow SOP when utilizing Excel and/or Matlab as described above

    Access & Use Information

    Public: This dataset is intended for public access and use. License: Creative Commons Attribution

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    Dates

    Metadata Created Date January 11, 2025
    Metadata Updated Date January 20, 2025

    Metadata Source

    Harvested from OpenEI data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 11, 2025
    Metadata Updated Date January 20, 2025
    Publisher Sandia National Laboratories
    Maintainer
    Doi 10.15121/1995008
    Identifier https://data.openei.org/submissions/7473
    Data First Published 2021-06-23T06:00:00Z
    Data Last Modified 2023-08-15T22:39:39Z
    Public Access Level public
    Bureau Code 019:20
    Metadata Context https://openei.org/data.json
    Metadata Catalog ID https://openei.org/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Data Quality True
    Datagov Dedupe Retained 20250120155001
    Harvest Object Id 596437de-6b01-477a-92e1-96be73b870c2
    Harvest Source Id 7cbf9085-0290-4e9f-bec1-91653baeddfd
    Harvest Source Title OpenEI data.json
    Homepage URL https://gdr.openei.org/submissions/1360
    License https://creativecommons.org/licenses/by/4.0/
    Old Spatial {"type":"Polygon","coordinates":-106.52201554221298,35.0106493792649,-106.52201554221298,35.0106493792649,-106.52201554221298,35.0106493792649,-106.52201554221298,35.0106493792649,-106.52201554221298,35.0106493792649}
    Program Code 019:006
    Projectlead Eric Hass
    Projectnumber FY16 AOP 3214
    Projecttitle Microhole Drilling
    Source Datajson Identifier True
    Source Hash 4f8f898e64e9ae4ca57367836819a26f14977103e9afa5e3460831f5c993cf1b
    Source Schema Version 1.1
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