Invention Grant
US08770302B2 Pipe anchoring and expanding unit for producing a slim well and method for producing a slim well using the same
失效
用于生产细长井的管道锚固和膨胀单元以及使用其制造细长井的方法
- Patent Title: Pipe anchoring and expanding unit for producing a slim well and method for producing a slim well using the same
- Patent Title (中): 用于生产细长井的管道锚固和膨胀单元以及使用其制造细长井的方法
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Application No.: US12747316Application Date: 2008-11-28
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Publication No.: US08770302B2Publication Date: 2014-07-08
- Inventor: Michele Spallini
- Applicant: Michele Spallini
- Applicant Address: IT Rome
- Assignee: ENI S.p.A.
- Current Assignee: ENI S.p.A.
- Current Assignee Address: IT Rome
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: ITMI2007A2308 20071210
- International Application: PCT/EP2008/010164 WO 20081128
- International Announcement: WO2009/074243 WO 20090618
- Main IPC: E21B23/01
- IPC: E21B23/01
Abstract:
An anchoring and expanding unit comprising an anchoring device (20, 20′) and an expanding device (30, 30′), reciprocally removably constrained, the anchoring device (20, 20′) being of the expandable type, wherein the expanding device (30, 30′) includes a series of expanding means (33a, 33b) which can be extracted and blocked in at least two different operative positions, wherein the expanding means (33a, 33b) protrude radially from the expanding device (30, 30′).
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