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  1. NORTH SEA HPHT WELLS REQUIRE CHANGES IN DRILLING PROCEDURES

    Magazine Articles

    Magazine Articles

    Mon, 11 Mar 1991

  2. Three drillships ordered for deep water

    Drilling contractors have let construction contracts for three drillships following receipt of long-term charters for deepwater exploration. Transocean Offshore Inc., Houston, let two contracts to Astilleros Espa?oles SA, Madrid, for construction of sister drillships to operate in the Gulf of ...

    Magazine Articles

    Magazine Articles

    Mon, 16 Mar 1998

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

    A new logging tool, sent down the drillstring before a pipe trip out of the hole, logs the well as the pipe is pulled from the hole, cutting the total time required for open hole logging on some wells. This logging while tripping (LWT) technology allows an operator to run a gamma ray and neutron ...

    Magazine Articles

    Magazine Articles

    Mon, 10 Jun 1996

  4. Penetration rates optimized by aligning torque and rotary speed

    Noble Drilling Corp.'s Tom Jobe, on location for Spirit 76 (a business unit of Unocal Corp.) in Mobile Bay, used a unique method for optimizing penetration rates and reducing drillstring failures by balancing rotary speed and torque parameters. Photo by Arno Op De Weegh The relationship between ...

    Magazine Articles

    Magazine Articles

    Mon, 22 Feb 1999

  5. TECHNOLOGY Amoco opens drilling test facility to industry

    R.V. Westermark OGCI Management Tulsa R.P. Bray Amoco Production Co. Tulsa Rig No. 1 is the main test rig at Amoco's Catoosa, Okla., drilling test facility (Fig. 1). A flow loop is used to research hydraulic behavior of single-phase fluids, hole cleaning, solids settling, and pressure loss (Fig. ...

    Magazine Articles

    Magazine Articles

    Mon, 7 Apr 1997

  6. Wire line retrieval coring technology shows promise

    The ability to use slim-hole, continuous core-recovery technologies incorporating wire line retrievable core bits, core barrel, and downhole shock absorber offers a new technique for drilling operations.

    Magazine Articles

    Magazine Articles

    Mon, 2 Aug 1999

  7. DROPPED BHA MAY INDUCE FORMATION BREAKDOWN FROM PRESSURE SURGE

    Roberto Maglione, Gualtiero Ferrario, Angelo Calderoni Agip SpA Milan A calculation method helps determine the dynamic gradient when a parted drillstring falls to the bottom of a well, possibly inducing formation breakdown. When a drillstring parts above a critical depth, dropping the bottom hole ...

    Magazine Articles

    Magazine Articles

    Mon, 24 Apr 1995

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

    A new drill pipe buckling model provided excellent predictions for each full-scale buckling test performed, not only in terms of deformed buckling shape but also in terms of weight transfer. Existing models, on the other hand, failed to predict observed drill pipe buckling behavior.

    Magazine Articles

    Magazine Articles

    Mon, 7 Feb 2011

  9. Mechanical oscillator frees stuck pipe strings using resonance technology

    This mechanical oscillator can handle dynamic hook loads up to 160,000 lb. It has successfully retrieved stuck coiled tubing and liners (Fig. 3). Resonant vibration technologies provide an alternative method for freeing stuck coiled-tubing, liners, and drillstrings . Situations where the axial ...

    Magazine Articles

    Magazine Articles

    Mon, 3 Nov 1997

  10. BP says Macondo wellbore detected by first relief well

    BP PLC reported its 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.

    Online Articles

    Online Articles

    Fri, 25 Jun 2010

  11. ITALY'S FIRST ONSHORE BLOWOUT CONTROLLED

    Italy's first onshore well blowout is under control, and authorities are assessing environmental damage and investigating the cause. Agip SpA's No. 24 development well in Trecate oil field in northern Italy's Po Valley apparently kicked Feb. 28 when drillstring was being pulled from the hole at a ...

    Magazine Articles

    Magazine Articles

    Mon, 14 Mar 1994

  12. SIMPLIFIED EQUATIONS ESTIMATE FRICTION LOADS ON DOWNHOLE TUBULARS

    William Dangerfield Consultant Hafrsfjord, Norway A simplified calculation method of estimating friction loads on downhole tubular strings can help in planning wells, in designing casing and tubing strings, and in specifying drillstring and hoisting requirements. These equations can be solved using ...

    Magazine Articles

    Magazine Articles

    Mon, 21 Nov 1994

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