发明授权
- 专利标题: Enhanced device for determining the location of induced stress in stuck borehole tubulars
- 专利标题(中): 用于确定卡钻井管中诱发应力的位置的增强装置
-
申请号: EP13197618.5申请日: 2013-12-17
-
公开(公告)号: EP2752551B1公开(公告)日: 2018-02-28
- 发明人: Mason, Guy Harvey
- 申请人: Ge Oil & Gas Esp, Inc.
- 申请人地址: 5000 SE 59th Street Oklahoma City, OK 73135 US
- 专利权人: Ge Oil & Gas Esp, Inc.
- 当前专利权人: Ge Oil & Gas Esp, Inc.
- 当前专利权人地址: 5000 SE 59th Street Oklahoma City, OK 73135 US
- 代理机构: Illingworth-Law, William Illingworth
- 优先权: US201213725444 20121221
- 主分类号: E21B23/00
- IPC分类号: E21B23/00 ; E21B47/09
摘要:
A method for identifying the location of a binding zone between a stuck tubular and a borehole includes the steps of passing a demagnetizing stress sensor 106 through the tubular on a baseline magnetization pass to magnetize the tubular. Next, the demagnetizing stress sensor 106 measures a baseline magnetization of the tubular. Once the baseline magnetization has been established, the method continues by applying a stress to the tubular and passing the demagnetizing stress sensor 106 through the tubular on a scanning pass while the tubular is stressed. The demagnetizing stress sensor 106 then measures a stress-induced magnetization of the tubular. The method concludes by comparing the baseline magnetization of the tubular against the stress-induced magnetization of the tubular. Notably, in preferred embodiments, the method includes the magnetization of the tubular in a substantially radial direction and the stresses are applied in vectors perpendicular to the radial magnetization of the tubular.
公开/授权文献
信息查询