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1. 发明专利

CA2508852C DRILLING METHOD 未知
公开(公告)号：CA2508852C
公开(公告)日：2011-03-22
申请号：CA2508852
申请日：2003-07-16
申请人： & PRODUCTIONS SCHLUMBERGER ET
发明人： HEAD PHILIP , LURIE PAUL GEORGE
IPC分类号： E21B7/00 , E21B21/00 , E21B23/00 , E21B41/00 , E21B43/00
摘要： A method of drilling a borehole from a selected location in an existing wellbore (1) penetrating subterranean earth formation having at least one hydrocarbon bearing zone (3) wherein the existing wellbore is provided with a casing (4) and a hydrocarbon fluid production conduit (6) is arranged in the existing wellbore in sealing relationship with the wall of the casing, the method comprising: passing a remotely controlled electrically operated drilling device (12) from the surface through the hydrocarbon fluid production conduit to the selected location in the existing wellbore; operating the drilling device such that cutting surfaces on the drilling device drill the borehole from the selected location in the existing wellbore thereby generating drill cuttings wherein during operation of the drilling device, a first stream of produced fluid flows directly to the surface through the hydrocarbon fluid production conduit and a second stream of produced fluid is pumped over the cutting surfaces of the drilling device via a remotely controlled electrically operated downhole pumping means and the drill cuttings are transported away from the drilling device entrained in the second stream of produced fluid.

2. 发明专利

CA2508852A1 DRILLING METHOD 未知
公开(公告)号：CA2508852A1
公开(公告)日：2004-02-05
申请号：CA2508852
申请日：2003-07-16
申请人： & PRODUCTIONS SCHLUMBERGER ET
发明人： LURIE PAUL GEORGE , HEAD PHILIP
IPC分类号： E21B7/00 , E21B21/00 , E21B23/00 , E21B41/00 , E21B43/00
摘要： A method of drilling a borehole from a selected location in an existing wellbore (1) penetrating subterranean earth formation having at least one hydrocarbon bearing zone (3) wherein the existing wellbore is provided with a casing (4) and a hydrocarbon fluid production conduit (6) is arranged in the existing wellbore in sealing relationship with the wall of the casing, the method comprising: passing a remotely controlled electrically operated drilling device (12) from the surface through the hydrocarbon fluid producti on conduit to the selected location in the existing wellbore; operating the drilling device such that cutting surfaces on the drilling device drill the borehole from the selected location in the existing wellbore thereby generating drill cuttings wherein during operation of the drilling device, a first stream of produced fluid flows directly to the surface through the hydrocarbon fluid production conduit and a second stream of produced fluid i s pumped over the cutting surfaces of the drilling device via a remotely controlled electrically operated downhole pumping means and the drill cuttin gs are transported away from the drilling device entrained in the second stream of produced fluid.

3. 发明专利

AU2003251337A8 Drilling method 未知
公开(公告)号：AU2003251337A8
公开(公告)日：2004-02-16
申请号：AU2003251337
申请日：2003-07-16
申请人： & PRODUCTIONS SCHLUMBERGER ET , XL TECHNOLOGY LTD
发明人： HEAD PHILIP , LURIE PAUL GEORGE
IPC分类号： E21B7/00 , E21B21/00 , E21B23/00 , E21B41/00 , E21B43/00
摘要： A method of drilling a borehole from a selected location in an existing wellbore (1) penetrating subterranean earth formation having at least one hydrocarbon bearing zone (3) wherein the existing wellbore is provided with a casing (4) and a hydrocarbon fluid production conduit (6) is arranged in the existing wellbore in sealing relationship with the wall of the casing, the method comprising: passing a remotely controlled electrically operated drilling device (12) from the surface through the hydrocarbon fluid production conduit to the selected location in the existing wellbore; operating the drilling device such that cutting surfaces on the drilling device drill the borehole from the selected location in the existing wellbore thereby generating drill cuttings wherein during operation of the drilling device, a first stream of produced fluid flows directly to the surface through the hydrocarbon fluid production conduit and a second stream of produced fluid is pumped over the cutting surfaces of the drilling device via a remotely controlled electrically operated downhole pumping means and the drill cuttings are transported away from the drilling device entrained in the second stream of produced fluid.

4. 发明专利

AU2003283531A1 METHOD OF FORMING A WINDOW IN A CASING 未知
公开(公告)号：AU2003283531A1
公开(公告)日：2004-06-15
申请号：AU2003283531
申请日：2003-11-05
申请人： & PRODUCTIONS SCHLUMBERGER ET
发明人： HEAD PHILIP , LURIE PAUL GEORGE
IPC分类号： E21B7/06 , E21B29/06
摘要： A method of cutting through a tubular, in particular, a casing at a selected location in a wellbore using a remotely controlled electrically powered cutting tool that comprises (a) a tool body, (b) a cutting head provided with a cutting means, the cutting head pivotally mounted on the tool body at or near the lower end thereof, and (c) an electrically actuatable means for pivoting the cutting head with respect to the tool body, the method comprising the steps of: passing the cutting tool to the selected location in the wellbore with the longitudinal axis of the cutting head aligned with the longitudinal axis of the tool body; pivoting the cutting head with respect to the tool body to a position where the cutting means of the cutting head is adjacent the wall of the tubular; and actuating the cutting means to cut through the tubular of the wellbore.

5. 发明专利

AU2003283531A8 Method of forming a window in a casing 未知
公开(公告)号：AU2003283531A8
公开(公告)日：2004-06-15
申请号：AU2003283531
申请日：2003-11-05
申请人： XL TECHNOLOGY LTD , & PRODUCTIONS SCHLUMBERGER ET
发明人： HEAD PHILIP , LURIE PAUL GEORGE
IPC分类号： E21B7/06 , E21B29/06
摘要： A method of cutting through a tubular, in particular, a casing at a selected location in a wellbore using a remotely controlled electrically powered cutting tool that comprises (a) a tool body, (b) a cutting head provided with a cutting means, the cutting head pivotally mounted on the tool body at or near the lower end thereof, and (c) an electrically actuatable means for pivoting the cutting head with respect to the tool body, the method comprising the steps of: passing the cutting tool to the selected location in the wellbore with the longitudinal axis of the cutting head aligned with the longitudinal axis of the tool body; pivoting the cutting head with respect to the tool body to a position where the cutting means of the cutting head is adjacent the wall of the tubular; and actuating the cutting means to cut through the tubular of the wellbore.

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