Rock Drilling Articles

  • Do you need to rapidly analyse Coltan?

    The need for a rapid, simple analysis (carried out by non-laboratory staff) at mines makes a handheld X-ray analyser the ideal analytical technique for analysis of Coltan. The solution Hitachi High-Tech’s X-MET8000 Expert Geo provides fast and accurate on-site analysis of a wide variety of mining sample types, such as drill cores, rocks, cuttings and powders. Results ...

  • PRB Installation at Superfund Site Using Angled Drilling - Case Study

    ABSTRACT BOS 100® was injected adjacent to and beneath a stream using a direct push angle drilling technique to successfully create a PRB and limit PCE flux from the upgradient source area into the stream. CHALLENGES The Superfund site is a former textiles facility where tetrachloroethylene (PCE) was used in dry-cleaning operations. Approximately ...

  • KASTHEW GEOTECH DRILLING SOLUTIONS CO. UGANDA LTD (EAST AFRICA)

    KASTHEW GEOTECH Solutions Co. Uganda Ltd. offers Geophysical and Hydro-geological surveys, Water well drilling, coring and Geotechnical with services (works, Consultation, project supervision and contracting) across the East African Region. KASTHEW GEOTECH WORKS / SERVICES;- 1.    SITE INVESTIGATIONS (Dam sites, Bridges, Roads, Buildings, Quarries, Mines, Windmills, Towers) ...

  • Case Study - GTD’s new EW4 PDC Cutters Deliver Excellent Results in East Siberian Oilfield Drilling.

    Drill Bit: 8.5” diameter, vertical bit. | PDC Cutters: GTD EW4 R1313 mm | Location: East Siberia | Results: 1,438 meters depth, ROP range 23-25 m/hr | Following significant investment in research and development, GTD have manufactured a new grade of PDC cutter, EW4, with exceptional abrasion resistant and toughness. GTD EW4 has a significant comparative ...

  • Q&A: A look at Shell Oil and Arctic offshore drilling

    Shell Oil drill vessels are heading to the Arctic. But they will not be permitted to drill into petroleum-bearing rock until a key piece of blowout response equipment, a capping stack, is on site. The capping stack is carried on the icebreaker Fennica, which arrived early Saturday for repairs in Portland, Oregon. Arctic offshore drilling opponents plan to demonstrate while the Fennica is ...


    By Associated Press

  • The mechanism and law of wellbore instability due to drill string impact in air drilling

    Due to the low density and small damping factor of gas, drill string vibration in air drilling is much more violent than that in mud. Drill string impact on wellbore wall has a vital effect on wellbore stability in many cases. However, there are few researches about drill string impact on wellbore wall so far. In this paper, the calculation model of drill string impact on wellbore wall was ...


    By Inderscience Publishers

  • Crosshole resistivity survey case study 2

    Crosshole resistivity survey to search out industrial waste water This exploration survey used the crosshole resistivity technique to observe whether or not an industrial waste water plant is leaking. Chemical analyses found that this specific waste water has a low resistivity compare to normal groundwater. Our recent example shows at depth of 45m a comparatively high resistive zone fabricated ...

  • Acoustic fingerprinting for rock identification during drilling

    During the process of mining, it is imperative to know the type and properties of the rocks being handled. The current technology for this involves core drilling, and subsequently subjecting the drilled cores to various tests in the laboratory, to identify the rocks and establish their properties. In many cases, obtaining a sample may be cumbersome and/or non–profitable. This paper presents a ...


    By Inderscience Publishers

  • Leakage from drill pipe casing subject to shear deformation

    The possibility of fluids leaking from a pressurised drill pipe casing subject to shear deformation caused by various events, including geological activity (such as seismic activity or deformations associated with subsidence related to excavation and construction) in the vicinity of the bore hole, is investigated. An experimental laboratory scoping investigation has been conducted to determine ...


    By Inderscience Publishers

  • Coiled Tube Turbodrilling: a proposed technology to optimise drilling deep hard rocks for mineral exploration

    The need to drill deep boreholes more efficiently for mineral exploration has raised the attention to investigate the feasibility of recent drilling technologies for such applications. The two principal methods of Reverse Circulation (RC) and diamond core drilling are usually used in combination by mine operators are subjected to certain limitations and inefficiencies. Considering that delivering ...


    By Inderscience Publishers

  • Fracture and Cavity Detection and Mapping in construction foundations case study-2

    Area of Implementation: Rethymno, Crete, Hellas System Used : SIR-10A (GSSI) w Antenna 300MHz (GSSI) Scope : To detect and map fractures and cavities in bedrock at a water tank construction site Method of investigation: Profile Grid: Profiles A to D and 1 to 10. Α1, Α2, Α3, A4 & A5: drill holes, profile ...


    By Geomorph Instruments

  • Case Study: Granite Rock

    The world is changing. Consider the environment: In just a couple of decades, our knowledge of the world around us and how we affect it has caused significant shifts in the way we act. The best example of this lies with our corporate culture, as companies have to consider their impact on the world as well as their overall profitability. Industries that rely on the earth are in a precarious ...


    By Willowstick Technologies LLC

  • Thermal stress on bottom hole rock of gas drilling

    Gas drilling has higher penetration than mud drilling. The greatest reason for this phenomenon with gas is that the gas is greatly cooled by expansion as it passes through the bit and thereby cools the bottom of the hole. The thermal stress at bottom–hole occurs during this process. The concept of thermal crushing of rocks is analysed in this study. The theoretical methods are developed to ...


    By Inderscience Publishers

  • Oil shale is not a viable fuel source - Study

    While many are celebrating the end of the 'Peak Oil' concerns because of abundent new sources of oil in shale deposits, a true accounting for all economic and environmental costs to exploit this energy source suggests it may not be a viable proposition at all. Scientists' best estimates of the Energy Return on Investment (EROI) of oil shale suggest it is very inefficient compared to conventional ...


    By GLOBE SERIES

  • Oil & gas exploration access road (Orito - Putumayo, Colombia)

    Background: Ecopetrol, one of the principal petroleum companies in latin america, has been expanding its reach deeper into the forests of Colombia. Drilling exploratory wells in remote locations such as the Putumayo basin concurs with a very aggressive growth strategy. The area around Orito is an extremely dense, undulating forest with poor soils and wet subgrades, nearly impossible to ...


  • A new approach for estimation of properties of metamorphic rocks

    Rock properties play an important role in the preliminary design of structures. This research focuses on developing empirical models using multiple regression technique for prediction of physical properties of metamorphic rocks. The model considers the following parameters: drill bit diameter, bit speed, penetration rate and equivalent sound level produced during drilling. The F-test was used to ...


    By Inderscience Publishers

  • Backreaming through rock — with AXIS Guided Boring System

    Taking on a challenge is nothing out of the ordinary for the experienced trenchless installation experts at Midwest Mole. Since its founding in 1982, the Indianapolis-based contactor has earned a reputation for installation innovation; overcoming obstacles and defying the odds. So, these trenchless pros didn’t hesitate to take on another challenge despite the recognition that they would ...


    By Vermeer

  • Ask a FLUMP Expert. Seven ways to Secure your Traverse System

    -For full article with pictures go here:  http://www.crisafullipumps.com/dredging-world-news/   When using an unmanned dredge, the propulsion system is critical.  The FLUMP, SRS Crisafulli's unmanned dredge, propels itself along a traverse cable. The drive system ...


    By SRS Crisafulli, Inc.

  • Installing gravity sewer in tough Georgia rock

    It took a contractor who was receptive to an innovative new installation approach, a good deal of patience and a whole lot of determination — after two previous attempts by other contractors using drills and air hammers were unsuccessful — to finally conquer a pesky 800-foot (243.8 m) stretch of tough Georgia blue granite. Hence, project owner Coweta County Water and Sewer Authority ...


    By Vermeer

  • Q&A: will shale revolutionise gas?

    "If shale gas fails to deliver on current expectations, then in 10 years or so, gas supplies could face serious constraints." So says Paul Stevens, a senior fellow at the international affairs think tank, Chatham House. He's penned a report that raises serious doubts about whether shale gas will indeed deliver. So what is shale gas, why is it such a big deal, and what will ...


    By Biolargo, Inc.

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you