Expandable liner saves casing string in Oman well

09/03/2001
Click here to enlarge imagePetroleum Development Oman LLC (PDO) installed a 29-m section of alternative borehole liner (ABL) in the Fahud-335 well, 276 m below the 95/8-in. casing shoe, selectively isolating a problematic shale interval (Fig. 1).Weatherford International Inc., Houston, which supplied and ran the liner, said in a July press release that the installation was a world-record and that its previous record for setting an ABL was 56 m below the casing shoe.PDO installed the ABL in a 121/4-in. underreamed section of the open hole across the interval 712-741 m MD at 44° hole angle, covering the 15-m thick shale formation.Before expansion, the ABL was 65/8-in. OD. Crews expand...
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