Expandable device for use in a well bore
a wellbore and expandable technology, applied in the direction of wellbore/well accessories, sealing/packing, blood vessels, etc., can solve the problems of requiring a large amount of force to achieve the desired expansion, few existing devices that are readily expandable at a desired location, and substantial forces are required to create the expansion. , to achieve the effect of facilitating the expansion of the device and facilitating the expansion of the radial devi
Inactive Publication Date: 2006-02-23
HALLIBURTON ENERGY SERVICES INC
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Benefits of technology
[0007] The present invention relates generally to expandable devices that may be used, for example, in subterranean environments. In one embodiment of the invention, the expandable device comprises one or more expandable cells that facilitate expansion of the device. By way of example, a tubul
Problems solved by technology
Such an approach, however, requires a large amount of force to achieve the desired expansion.
However, there are very few existing devices that are readily expandable at a desired location.
Of the devices that do exist, substantial forces are required to create the expansion.
Also, substantial plastic deformation often occurs which can limit the selection of available materials for a given expandable device.
Method used
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[0053] The following describes a variety of expandable devices that utilize expandable cells to facilitate expansion of the device from a contracted state to an expanded state. Various expansion techniques, expandable cell designs, and locking mechanisms are described, and typically the description is related to one or more exemplary applications. For example, the cells are described for use in tubular components, such as tubulars used in the oil production industry. However, this application is only an exemplary application to demonstrate the applicability of the various cells and locking mechanisms described herein. The description should not be construed as limiting the application of such expandable devices to the particular environments or applications described herein. Rather the techniques for formulating expandable devices can have a wide range of applications in other environments and industries.
[0054] As described below, exemplary expandable devices may or may not compris...
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An expandable device comprising a plurality of expandable cells. The cells may be bistable cells or other types of cells that are expanded from a contracted position towards an expanded position. Additionally, the cells may be combined with locking mechanisms to hold the structure in an expanded position.
Description
CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation of and claims the benefit of priority to U.S. application Ser. No. 10 / 050,468, filed Jan. 16, 2002, which application is incorporated herein by reference; the present application also claims the benefit of priority to U.S. Provisional Application No. 60 / 261,749, filed Jan. 16, 2001, and U.S. Provisional Application No. 60 / 296,875, filed Jun. 8, 2001, which applications are incorporated herein by reference.FIELD OF THE INVENTION [0002] This invention relates generally to expandable devices, and particularly to devices formed from one or more expandable cells that facilitate transition of the device from a contracted state to an expanded state. BACKGROUND OF THE INVENTION [0003] In a variety of applications and environments, it would be beneficial to have a device able to transition from a contracted state to an expanded state. Such devices can comprise planar members, tubular members, rectangular member...
Claims
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Login to View More IPC IPC(8): E21B17/00A61F2/06A61F2/90E21B33/12E21B33/124E21B33/127E21B41/02E21B43/08E21B43/10E21B43/16
CPCA61F2/91E21B33/1208E21B33/124E21B33/1277E21B43/164E21B43/086E21B43/103E21B43/105E21B43/108E21B41/02E21B43/106E21B23/06
Inventor HART, BARRIEJOHNSON, CRAIG D.SCHETKY, L. MCD.
Owner HALLIBURTON ENERGY SERVICES INC