发明名称 |
Expanding a tubular element in a wellbore |
摘要 |
A method is provided of radially expanding a tubular element (56) in a well-bore using an expander located in the tubular element, the expander (40) comprising an expansion member (48) and a plurality of segments (50) spaced in circumferential direction around the expansion member, the segments being movable between a radially retracted position and a radially expanded position by axial movement of the expansion member relative to the segments. The method includes a plurality of successive expansion cycles, wherein each expansion cycle comprises the steps of: (a) moving the expander (40) in axially forward direction through the tubular element (56) whereby the segments (56) are in the radially retracted position; and (b) radially expanding the tubular element by moving the segments to the radially expanded position by axially moving the expansion member relative to the segments. |
申请公布号 |
US8726985(B2) |
申请公布日期 |
2014.05.20 |
申请号 |
US200913141709 |
申请日期 |
2009.12.22 |
申请人 |
HESSELS JOHANNES LOUIS LEONARDUS;ROGGEBAND SERGE MATHIEU;WUBBEN ANTONIUS LEONARDUS MARIA;ZIJSLING DJURRE HANS;ENVENTURE GLOBAL TECHNOLOGY, LLC |
发明人 |
HESSELS JOHANNES LOUIS LEONARDUS;ROGGEBAND SERGE MATHIEU;WUBBEN ANTONIUS LEONARDUS MARIA;ZIJSLING DJURRE HANS |
分类号 |
E21B23/00 |
主分类号 |
E21B23/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|