Rock anchor
a technology of fixation device and rock anchor, which is applied in the direction of fluid removal, earthwork drilling and mining, and well accessories, etc., can solve the problems of affecting the sealing characteristics of annular barriers, slow process, and high cost of us
Inactive Publication Date: 2014-04-17
WELLTEC AS
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Benefits of technology
The present invention provides an improved device for securing a tubular in an open-hole wellbore. The device helps to overcome the disadvantages and drawbacks of the prior art. Its technical effects include the ability to securely hold the casing in place, preventing movement or displacement during use. This enhances the stability and reliability of the wellbore, reducing the risk of complications during drilling or wellbore construction.
Problems solved by technology
This process is slow and requires a drilling rig at the surface, which is very expensive to use.
If the casing is moved following the deployment of the annular barriers, the sealing characteristics of the annular barriers may be compromised.
Method used
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[0064]FIGS. 1a and 1b show a formation fixation device 1 for positioning in an uncased wellbore. FIG. 1a shows the formation fixation device 1 in a relaxed position in an unset condition, whereas FIG. 1b shows the formation fixation device in an activated position. In FIGS. 1a and 1b, the formation fixation device 1 comprises a tubular part 10 having a hollow interior 29. The tubular part 10 extends in an axial direction and has an exterior surface 11 defining a periphery of the formation fixation device 1. The formation fixation device 1 further comprises a fixation unit 20 projectable in a radial direction of the tubular part for fixating the formation fixation device in the wellbore by pressurising the tubular from within, whereby the fixation unit 20 penetrates the formation.
[0065]When the formation fixation device 1 is in the relaxed position, the fixation units 20 can be activated, whereby the fixation unit 20 projects in the radial direction in relation to the tubular part 10...
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The present invention relates to a formation fixation device for securing a tubular in an open-hole wellbore, the formation fixation device comprising a tubular part, a fixation unit and a fluid passage. Furthermore, the invention relates to a downhole fixation system for securing a casing comprising a first end and a second end in an open-hole wellbore and to a method of permanently fixating a tubular part in an open-hole wellbore as well as to use of a formation fixation device according to the invention for fixating a tubular part in an open-hole wellbore.
Description
FIELD OF THE INVENTION[0001]The present invention relates to a formation fixation device for securing a tubular in an open-hole wellbore. Furthermore, the invention relates to a downhole fixation system for securing a casing comprising a first end and a second end in an open-hole wellbore and to a method of permanently fixating a tubular part in an open-hole wellbore as well as to use of a formation fixation device according to the invention for fixating a tubular part in an open-hole wellbore.BACKGROUND ART[0002]Wells are completed in a variety of ways; some are made as open-hole completions and some as casing completions. In casing completing, the casing is often cemented in the wellbore. This process is slow and requires a drilling rig at the surface, which is very expensive to use. It is desirable to be able to run in and secure the casing in an open-hole wellbore as fast as possible to reduce costs associated with renting expensive drilling rigs.[0003]An alternative to cemented...
Claims
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IPC IPC(8): E21B43/10
CPCE21B43/10E21B23/01
Inventor HALLUNB.AE BUTTED.K, JORGEN
Owner WELLTEC AS