发明名称 |
Zonal isolation method and apparatus |
摘要 |
A new zonal isolation method and apparatus perforates a plurality of zones of a formation, while isolating each perforated zone from every other zone, with one trip into wellbore, and without requiring the circulation of a kill fluid throughout the wellbore following perforation to kill the well so that a packer and/or a perforating gun may be removed from the well. The new zonal isolation apparatus includes a perforating gun and a plug or packer connected to the perforating gun. The new zonal isolation method includes detonating the perforating gun thereby creating a set of perforations in the formation; moving the perforating gun and plug/packer uphole until the plug/packer is situated at a particular position in the wellbore which is disposed directly above the set of perforations in the formation; and setting the plug/packer at the particular position in the wellbore. The perforated zones located below the plug/packer are isolated from annulus fluids, pressure, or kill fluids which are normally introduced above the plug/packer in the wellbore.
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申请公布号 |
US5704426(A) |
申请公布日期 |
1998.01.06 |
申请号 |
US19960619781 |
申请日期 |
1996.03.20 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
RYTLEWSKI, GARY L.;MEEK, DALE E. |
分类号 |
E21B23/00;E21B43/116;E21B43/14;(IPC1-7):F21B43/116 |
主分类号 |
E21B23/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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