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Drilling with Steerable liners on Gullfaks.

Drilling with Steerable liners on Gullfaks. Gullfakslandsbyen 2007. Equipment. Drillstring from surface to liner hanger/packer Liner Hanger / Packer Latch between liner hanger, liner and inner string (drill pipe) Inner string (Drill pipe) Liner Latch between innerstring, liner and BHA

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Drilling with Steerable liners on Gullfaks.

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  1. Drilling with Steerable liners on Gullfaks. Gullfakslandsbyen 2007

  2. Equipment • Drillstring from surface to liner hanger/packer • Liner Hanger / Packer • Latch between liner hanger, liner and inner string (drill pipe) • Inner string (Drill pipe) • Liner • Latch between innerstring, liner and BHA • Motor (For bit RPM) • MWD and LWD • 3D RSS (Rotary Steerable System) • Reamer shoe or hole opener • Pilot bit 3 5 6 10 11 2 9 8 7 1 4

  3. Operations – step by step • Make up reamer shoe, liner and linerhanger and set this in slips in rotary table • Make up BHA / inner string and trip in by using a false rotray table • Latch on to liner • Trip in with complete system to TD • Rotary drill to TD, liner RPM is 80, bit RPM 200 (due to motor) • Relatch inner string and BHA from liner and liner hanger • Trip out with BHA • Cement the liner in place conventionally

  4. Oppgave: • Hvilke type brønner kan dette systemet benyttes? • Lange seksjoner? • Korte seksjoner? • Grunne seksjoner? • Dype seksjoner? • Brønndesign? • Hvilke situasjoner vil dette hjelpe oss? • Trykksoner? • Doglegs? • Alternativer dersom vi ikke klarer å bore planlagt seksjon? • Får vi dette assembliet ut av hullet igjen? • Er dette en alternativ metode for Gullfaks? Eventuelt hva burde videreutvikles.

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