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


    Magazine Articles

    Mon, 11 Mar 1991

    Bailer Consultant Tananger, Norway Such equipment as casing, drillstrings , mud, logging, and rigs that were adequate to drill most ..... with magnetic markers for relief-well path determination. DRILLSTRING Presently, HP wells are being drilled with 5-in. drill

  2. Three drillships ordered for deep water

    Magazine Articles

    Mon, 16 Mar 1998

    derricks to enable deployment of two complete drillstrings at once. They will be able to operate ..... s newbuild will be equipped with one drillstring , while Navion's will have two drillstrings , one of which will be used only as an

  3. TECHNOLOGY Logging while tripping cuts time to run gamma ray

    Magazine Articles

    Mon, 10 Jun 1996

    A new logging tool, sent down the drillstring before a pipe trip out of the hole ..... requirements, holds the tools in the drillstring without interfering with the logging ..... tool is run inside or pumped down the drillstring , the log is made as the pipe is pulled

  4. Penetration rates optimized by aligning torque and rotary speed

    Magazine Articles

    Mon, 22 Feb 1999

    optimizing penetration rates and reducing drillstring failures by balancing rotary speed and ..... optimize penetration rates while reducing drillstring failures. An in-house software program ..... can generate harmful stresses to the drillstring . In these cases, destructive action

  5. TECHNOLOGY Amoco opens drilling test facility to industry

    Magazine Articles

    Mon, 7 Apr 1997

    Although a variety of drillstrings can be handled, the facility has two drillstring sizes. One is a light ..... aluminum 41/2-in. drillstring that because of its lower ..... a 21/8-in. steel drillstring for smaller holes. The

  6. Wire line retrieval coring technology shows promise

    Magazine Articles

    Mon, 2 Aug 1999

    mounted at the bottom of the drillstring . The wire line system demands ..... requirements for adaptation with the drillstring and other devices. It is ..... to work with conventional drillstrings used in slim-hole drilling ..... system uses special rig, drillstring ," IADC Drilling Contractor


    Magazine Articles

    Mon, 24 Apr 1995

    dynamic gradient when a parted drillstring falls to the bottom of a well ..... formation breakdown. When a drillstring parts above a critical depth ..... which a falling fish (parted drillstring ) induces a downhole pressure

  8. SPECIAL REPORT: Tests validate new drill pipe buckling model

    Magazine Articles

    Mon, 7 Feb 2011

    between the wellbore and drillstring . Full-scale tests ..... scale tests to evaluate drillstring buckling models that currently ..... objective was to put different drillstrings in compression (to make ..... then measure the deformed drillstring with a continuous gyroscope

  9. Mechanical oscillator frees stuck pipe strings using resonance technology

    Magazine Articles

    Mon, 3 Nov 1997

    Fig. 3). Resonant vibration technologies provide an alternative method for freeing stuck coiled-tubing, liners, and drillstrings . Situations where the axial reciprocation of pipe; the use of large tensile, compressive, or percussive forces; or where

  10. BP says Macondo wellbore detected by first relief well

    Online Articles

    Fri, 25 Jun 2010

    first relief well being drilled to stop the Macondo well oil spill in the Gulf of Mexico reached 16,275 ft on June 23, and drillstring was removed for a ranging run using wireline to locate the runaway well. During the ranging run, BP detected the Macondo

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