| 摘要 |
SELECTIVE FRACTURING SYSTEM 5 A method of fracturing a formation surrounding a wellbore comprises the steps of: (i) providing a tubular including at least two portions, each portion comprising an annulus isolation means, a selective flow path between the interior and the exterior of the tubular and a throughbore isolation means; 10 (ii) running the tubular into the wellbore; (iii) isolating an annulus between the exterior of the tubular and the wellbore to thereby create at least two isolated zones; (iv) selecting any zone to be fractured; (v) remotely opening the flow path in the portion of tubular corresponding 15 to the selected zone; (vi) remotely isolating the throughbore of the tubular by closing the throughbore isolation means in the portion of tubular corresponding to the selected zone; and (vii) fracturing at least part of the formation surrounding the well. Lo~ c-44 o 0l |
