| 摘要 |
A well completion method comprising the steps of: (1) positioning a conduit in a wellbore such that (a) a wellbore annulus surrounding the conduit is defined between the conduit and the wall of the wellbore, (b) the wellbore annulus has a first longitudinal segment which is positioned within a producing formation, (c) the wellbore annulus has a second longitudinal segment which is positioned within a producing formation, and (d) the wellbore annulus has a third longitudinal segment which is positioned between the first longitudinal segment and the second longitudinal segment; (2) placing a gravel pack in the wellbore annulus such that the gravel pack surrounds the conduit and substantially fills the first, second, and third longitudinal segments of the wellbore annulus; and (3) injecting a hardenable hydraulic cement composition into the portion of the gravel pack located in the third longitudinal segment of the wellbore annulus such that, after the hydraulic cement composition hardens, the third longitudinal segment of the wellbore annulus is blocked and fluid flow through the third longitudinal segment of the wellbore annulus from the first longitudinal segment to the second longitudinal segment and from the second longitudinal segment to the first longitudinal segment is thereby substantially prevented.
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