Case Study

7” Tool Reams 1,200 M (3937 Ft) @ 60 M (197 Ft) /hour, Helps Land Production Liner at TD

7” Tool Reams 1,200 M (3937 Ft) @ 60 M (197 Ft) /hour, Helps Land Production Liner at TD

Case History Objectives ? Run 7” production liner in 9 ½” hole to 5,380 m (17,652 ft) TD @ 90 in Gulllfaks unstable zones ? Cement as per program Well Background & Challenges ? Offset wells experienced hole instability ? Risk Register – unable to run 7” to TD due to washed out, unstable shales, and ss ledges ? Two failed attempts to run 7” in original bore ? Deployment well was 2,281m (7,484 ft) sidetrack, mostly 90° ? Unstable sha

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