发明名称 |
CASING EXIT JOINT WITH EASILY MILLED, LOW DENSITY BARRIER |
摘要 |
A casing exit joint with an easily milled and low density barrier. A casing exit joint for use in drilling a lateral wellbore outwardly from a parent wellbore includes a generally tubular window structure having a window formed through a sidewall of the structure. An outer sleeve is disposed external to the window structure, so that the sleeve overlies the window. A hardenable substance supports the sleeve against deflection toward the window. A method of drilling a lateral wellbore extending outwardly from a parent wellbore includes the steps of: providing a casing exit joint including a hardenable substance positioned in a sidewall of the casing exit joint; then installing the casing exit joint in the parent wellbore; and then cutting through the hardenable substance in order to provide access for drilling the lateral wellbore.
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申请公布号 |
US2009288817(A1) |
申请公布日期 |
2009.11.26 |
申请号 |
US20080124895 |
申请日期 |
2008.05.21 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
PARLIN JOSEPH D.;DANCER WILLIAM W.;MCGLOTHEN JODY R. |
分类号 |
E03B3/11;E02D29/00 |
主分类号 |
E03B3/11 |
代理机构 |
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地址 |
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