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公开(公告)号：EP1070194A1
公开(公告)日：2001-01-24
申请号：EP99907728.2
申请日：1999-03-02
发明人： ROBERTSON, Robert , BLIZZARD, William, Alan, Jr. , WILSON, Timothy, Lee , CARTER, Thurman B.,Beamer , JOHANTGES, Paul, Jeffrey , MCCLUNG, Guy, LaMont, III
IPC分类号： E21B29/10
摘要： A mill comprising a body (12) and milling material (20), characterised in that said body (12) is flexible. A method of milling using said mill, the method comprising the step of lowering said mill into tubulars in a wellbore across an offset portion thereof, operating said mill to mill at least a portion of said tubulars.
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公开(公告)号：EP1312751B1
公开(公告)日：2005-04-27
申请号：EP02102822.0
申请日：1999-01-18
发明人： DURST, Douglas Glenn , ROBERTSON, Robert, Eugene , CARTER, Thurman B. , JOHANTGES, Paul, Jeffrey , PLEASANTS, Charles, W. , BLIZZARD, William, Alan, Jr. , LANGFORD, Dale, Elliott , MCCLUNG, Guy, LaMont, III
IPC分类号： E21B29/00
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公开(公告)号：EP1070194B1
公开(公告)日：2003-02-12
申请号：EP99907728.2
申请日：1999-03-02
发明人： ROBERTSON, Robert , BLIZZARD, William, Alan, Jr. , WILSON, Timothy, Lee , CARTER, Thurman B., Beamer , JOHANTGES, Paul, Jeffrey , MCCLUNG, Guy, LaMont, III
IPC分类号： E21B29/10
摘要： A mill comprising a body (12) and milling material (20), characterised in that said body (12) is flexible. A method of milling using said mill, the method comprising the step of lowering said mill into tubulars in a wellbore across an offset portion thereof, operating said mill to mill at least a portion of said tubulars.
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公开(公告)号：EP0948700A2
公开(公告)日：1999-10-13
申请号：EP97913291.0
申请日：1997-11-19
CPC分类号： E21B23/04 , E21B7/061 , E21B10/50 , E21B21/10 , E21B23/06 , E21B29/06 , E21B34/10 , E21B34/101 , E21B44/005 , E21B47/091
摘要： A whipstock (10) has a flowchannel (41) therethrough to facilitate the rapid lowering of the whipstock through liquid in an oil well. A whipstock (10) has a guide surface and a sacrificial element (20) spaced from the guide surface. In use, the sacrificial surface prevents the starting mill damaging the guide surface during the formation of the initial opening in a casing. The undamaged guide surface can later be used for accurately guiding tubulars and tools to help ensure that lateral bores are correctly positioned.
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公开(公告)号：EP0948700B1
公开(公告)日：2006-01-18
申请号：EP97913291.7
申请日：1997-11-19
CPC分类号： E21B23/04 , E21B7/061 , E21B10/50 , E21B21/10 , E21B23/06 , E21B29/06 , E21B34/10 , E21B34/101 , E21B44/005 , E21B47/091
摘要： A whipstock (10) has a flowchannel (41) therethrough to facilitate the rapid lowering of the whipstock through liquid in an oil well. A whipstock (10) has a guide surface and a sacrificial element (20) spaced from the guide surface. In use, the sacrificial surface prevents the starting mill damaging the guide surface during the formation of the initial opening in a casing. The undamaged guide surface can later be used for accurately guiding tubulars and tools to help ensure that lateral bores are correctly positioned.
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公开(公告)号：EP1047860B1
公开(公告)日：2004-03-24
申请号：EP99901711.4
申请日：1999-01-18
发明人： DURST, Douglas Glenn , ROBERTSON, Robert, Eugene , CARTER, Thurman B. , JOHANTGES, Paul, Jeffrey , PLEASANTS, Charles, W. , BLIZZARD, William, Alan, Jr. , LANGFORD, Dale, Elliott , MCCLUNG, Guy, LaMont, III
IPC分类号： E21B29/00
摘要： An apparatus for milling through a whipstock in a wellbore, which apparatus comprises a mill guide with a lower shoe for emplacement between an interior surface of the wellbore and an exterior portion of an upstream portion of the whipstock to position and/or stabilize the mill guide.
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公开(公告)号：EP1312751A3
公开(公告)日：2004-01-14
申请号：EP02102822.0
申请日：1999-01-18
发明人： DURST, Douglas Glenn , ROBERTSON, Robert, Eugene , CARTER, Thurman B. , JOHANTGES, Paul, Jeffrey , PLEASANTS, Charles, W. , BLIZZARD, William, Alan, Jr. , LANGFORD, Dale, Elliott , MCCLUNG, Guy, LaMont, III
IPC分类号： E21B29/00
摘要： A method for milling within a whipstock set in a wellbore comprises introducing a mill guide (30) having a channel therethrough into the wellbore above the whipstock. The mill guide is moved into stabilising contact with the whipstock and a mill is guided by the mill guide to mill down into the whipstock. The mill has at least a portion thereof in contact with the mill guide while milling into the whipstock.
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公开(公告)号：EP1312751A2
公开(公告)日：2003-05-21
申请号：EP02102822.0
申请日：1999-01-18
发明人： DURST, Douglas Glenn , ROBERTSON, Robert, Eugene , CARTER, Thurman B. , JOHANTGES, Paul, Jeffrey , PLEASANTS, Charles, W. , BLIZZARD, William, Alan, Jr. , LANGFORD, Dale, Elliott , MCCLUNG, Guy, LaMont, III
IPC分类号： E21B29/00
摘要： A method for milling within a whipstock set in a wellbore comprises introducing a mill guide (30) having a channel therethrough into the wellbore above the whipstock. The mill guide is moved into stabilising contact with the whipstock and a mill is guided by the mill guide to mill down into the whipstock. The mill has at least a portion thereof in contact with the mill guide while milling into the whipstock.
摘要翻译： 在井眼中设置造斜器内，用于铣削的方法包括通过引入到所述造斜器上方的井眼具有一个有一通道磨引导件（30）。 磨机引导件移动成与所述造斜器稳定伊辛接触和碾磨机由导向机引导到研磨机向下进入造斜器。 磨机与球磨机导向接触具有至少其一部分而研磨成所述造斜器。
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公开(公告)号：EP1047860A1
公开(公告)日：2000-11-02
申请号：EP99901711.4
申请日：1999-01-18
发明人： DURST, Douglas Glenn , ROBERTSON, Robert, Eugene , CARTER, Thurman B. , JOHANTGES, Paul, Jeffrey , PLEASANTS, Charles, W. , BLIZZARD, William, Alan, Jr. , LANGFORD, Dale, Elliott , MCCLUNG, Guy, LaMont, III
IPC分类号： E21B29/00
摘要： An apparatus for milling through a whipstock in a wellbore, which apparatus comprises a mill guide with a lower shoe for emplacement between an interior surface of the wellbore and an exterior portion of an upstream portion of the whipstock to position and/or stabilize the mill guide.
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