Machine Design
  • Resources
  • Members
  • Directory
  • Webinars
  • WISE
  • CAD Models
  • Advertise
    • Search
  • 3D Printing & CAD
  • AUTOMATION & IIOT
  • Robotics
  • Motion Systems
  • Materials
  • Video
  • Data Sheets
  • Topics
    Industry Markets3D Printing & CADAutomation & IIoTFastening & JoiningMaterialsMechanical & Motion Systems Medical DesignRobotics
    Resources
    Machine Design ResourcesWISE (Workers in Science & Engineering)Company DirectorySearch Data SheetsContributeDigital Edition ArchivesCSIA Exchange
    Members
    ContentBenefitsSubscribe
    Advertise
    https://www.facebook.com/MachineDesignMagazine/
    https://www.linkedin.com/company/10998894
    https://twitter.com/MachineDesign
    https://www.youtube.com/channel/UCXKEiQ9dob20rIqTA7ONfJg
    Machinedesign 5992 Elisabeth Eitel 0 0
    1. Community
    2. Editorial Comment

    The statistics and water of blind-hole rock bursting

    Sept. 1, 2011
    495,000 That's how many wells produce natural gas in the United States, and the number is (as they say) exploding. What's more, the Baker Hughes Rig Count,
    Elisabeth Eitel
    Motionsystemdesign Com Images Elisabeth Eitel
    495,000 — That's how many wells produce natural gas in the United States, and the number is (as they say) exploding. What's more, the Baker Hughes Rig Count, a real-time measure of gas production, reports for August that actively working rigs have increased by 319 in the last year to 1,959.

    Roughly 60% of these rigs are designed to hydraulically fracture or frack for natural gas. Unlike rigs of yesteryear, outputting up to 9,000 psi for several-hour stretches, new designs are tougher and parked at wells for longer, more grueling periods: Stronger steel frames, super-duty quintuplex pumps, fully welded supports, and bigger bearings mean some rigs output 2,400 bhp to 13,500 psi for days of multi-hour cycles — horizontally ramming water, chemicals, and proppant sand (increasingly, synthetic bauxites) down holes thousands of feet deep to crack shale and jailbreak precious fuel.

    However, fracking is scientifically linked to some incidents of flammable water and chemical contamination. In April, Duke University researchers confirmed what the Sundance documentary called Gasland and others have sensationalized: Well water 1,000 m or less from Pennsylvania and New York fracking sites contains an average of 17 times the normal amount of methane in drinking water — sometimes enough to allow one to set it ablaze. Isotropic analysis confirms that this isn't common biogenic methane (say, from cows in the next field) but thermogenic methane found deep in Earth's crust, where fracking takes place. Similarly, EPA studies verify fracking chemical leaks in Wyoming and Colorado.

    Energy-company representatives stress that contamination is rare and fracking offers the promise of independence from foreign oil. In fact, fracking was made exempt from federal Safe Drinking Water Act regulations in 2005, so it's now up to states (many cash strapped) to both permit and police fracking. The FRAC Act — languishing in Congress — would repeal fracking's Safe-Water exemption. In the mean time, Pennsylvania, Texas, Wyoming, Michigan, and Arkansas have passed laws requiring gas-drilling companies to divulge, in varying degrees of detail, the secret sauce of chemicals used to more effectively coax natural gas from the Earth. Perhaps in contrast, New York is lifting its 2008 moratorium on fracking, and one commissioner underscores that state oil and gas rights trump those of local bans — a suspect idea already asserted in West Virginia courts.

    Indeed, what we have here is a problem of odds. It isn't that all fracking is dangerous; rather, occasional explosions, spills, and earthquakes are simply results of garden-variety human error coupled with significant increases in the inherently unpredictable activity of large-scale blind-hole rock bursting. It's statistically likely that with the rise in fracking, there will be a small but ecologically significant increase in accidents.

    Similarly, the sheer scale of the fracking process requires huge amounts of water — and in my opinion, this is the gravest issue. According to Chesapeake Energy of Oklahoma City, between 65,000 and 600,000 gallons of water are used in the initial vertical drill of a well; an average of 4.5 million more gallons are used for each fracking session; one well can be fracked many times. Do the math. Though frack water is often reused repeatedly for more fracking, remaining water must either be dumped, left in the ground, industrially filtered, or hauled to other locations willing to accept and store industrial wastewater and partially evaporated slurries (thanks, Ohio). That adds up to a lot of fouled H20 — and at a time when freshwater distribution and scarcity are already issues, even in many parts of the U.S.

    Find supporting links and more information at motionsystemdesign.com/fracking.

    Continue Reading

    Changemakers: Expanding our Understanding of the STEM Field

    Survey of Engineers: Pushing Roles to the Edge of Possibility

    Sponsored Recommendations

    Smart Factory Solutions that Connect and Protect from Amphenol RF

    Nov. 28, 2023

    Stay Connected and In Control of Your Future Factories with Littelfuse

    Nov. 28, 2023

    Turn to NKK Switches for the Widest Range of Industrial-Savvy Electromechanical Switches

    Nov. 28, 2023

    Unlocking Operational Flexibility in Manufacturing with Industria IoT

    Nov. 28, 2023

    Voice your opinion!

    To join the conversation, and become an exclusive member of Machine Design, create an account today!

    I already have an account

    New

    Universal Robots Unveils UR30: Relief for Heavy Lifting

    A Beginner’s Guide to Design Failure Mode and Effects Analysis (DFMEA)

    Deliver Robust Automated Systems Through Servo Maintenance

    Most Read

    For Better or For Worse, Multimodal AI Cultivates New Frontiers

    Brushed vs Brushless Motors: Which is Best for your Application?

    Why it’s Time to Replace Hydraulic and Pneumatic Actuators with Electric Cylinders

    Sponsored

    Top Tips Why You Should Select RFID Non-Contact Safety Sensors Over Mechanical Components

    The Altech Full Line of Terminal Blocks

    ULTIMATE BATTERY CARE

    Machine Design
    https://www.facebook.com/MachineDesignMagazine/
    https://www.linkedin.com/company/10998894
    https://twitter.com/MachineDesign
    https://www.youtube.com/channel/UCXKEiQ9dob20rIqTA7ONfJg
    • About Us
    • Contact Us
    • Advertise
    • Do Not Sell or Share
    • Privacy & Cookie Policy
    • Terms of Service
    © 2023 Endeavor Business Media, LLC. All rights reserved.
    Endeavor Business Media Logo