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Hardening

Hardening news and technical articles from Oil & Gas Journal. Search Hardening latest and archived news and articles

  1. DRILLING CONSORTIUM—2 (Conclusion): Drilling campaign obtains continuous improvement

    Magazine Articles

    Mon, 1 Aug 2011

    experiences and best practices in similar incidents. The project meetings for the following wells decided to continue using rapid hardening industry cement systems for the 30-in. casing. 2 The next sections frequently included foam cement for improving well

  2. Pacific Rubiales seeks downstream integration

    Online Articles

    Tue, 9 Nov 2010

    search for growth while diversifying the company’s resource base. Competition for deep conversion refining capacity is hardening regionally. Pacific Rubiales does not plan to buy refinery assets but will move into mitigating the volatility in netbacks

  3. TECHNOLOGY More precise pipe wall calculations developed

    Magazine Articles

    Mon, 29 Apr 1996

    purposes, we will use an elastic, linearly hardening stress-strain diagram, which is simpler ..... thickness. Equation 32 for calculating hardening modulus is based on the assumption that ..... 70% of yield strength and the linear hardening lasts up to the yield strength. The

  4. Permafrost Cement - Conclusion: Ceramicrete blends produce strong, low-permeability cements for arctic use

    Magazine Articles

    Mon, 16 May 2005

    yield a pumping time longer than 5 hr. At the same time, its hardening also took much longer. Click here to enlarge image To reduce ..... time. As MgO content increased, the thickening as well as hardening time became shorter. Thus, adjusting the MgO content allows

  5. Doha's collapse will cut energy use the hard way

    Online Articles

    Fri, 1 Aug 2008

    is finished. The outlook, though, isn't cheery. If anything, protectionism, especially involving farm products, is hardening . China and India, with growing populations beginning to reap the fruits of industrialization, have received blame for holding

  6. Doha’s collapse will cut energy use the hard way

    Magazine Articles

    Mon, 11 Aug 2008

    finished. The outlook, though, isn’t cheery. If anything, protectionism, especially involving farm products, is hardening . China and India, with growing populations beginning to reap the fruits of industrialization, have received blame for holding

  7. SPECIAL REPORT: BP, Baker run first expandable monobore liner extension system

    Magazine Articles

    Mon, 12 Feb 2007

    Controlled plastic deformation leads to an increase in tensile strength and, subsequently, increased hardness due to cold work hardening . The casing is nominally supplied with a hardness of about 90 Hardness Rockwell ‘B’ scale (HRB); 95HRB max per Baker

  8. Equipment / Software / Literature

    Magazine Articles

    Mon, 3 Mar 2008

    generates 25-35% less heat at the contact point (minimizing premature seal failure due to heat checking, blistering, hardening , or lubricant breakdown); generates 20% less friction torque or drag; curbs shaft wear; and provides greater lip lubrication

  9. North Sea data yield insight on fatigue life of drill pipe

    Magazine Articles

    Mon, 8 Jan 2007

    have a yield of about 2 million psi. But, dislocations are metallurgical boundaries responsible for fatigue behavior. Work hardening of material is done so that these dislocations cannot move as easily as before. This type of material imperfection means

  10. SPECIAL REPORT: LNG shipping world changing; gas carriers expanding rapidly

    Magazine Articles

    Mon, 9 Apr 2007

    time, charter rates have been dropping during the last few years. Competition within the mainstream of the LNG carriers is hardening as a result. Pressure on cost and lower charter rates compared to previous years will require discipline by vessel operators

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