摘要:
The invention provides a wellbore system comprising an expandable tubular element arranged in a wellbore formed in an earth formation whereby an annular space is present between the tubular element and a wall surrounding the tubular element. The tubular element is provided with sealing means for sealing the annular space, wherein the sealing means includes a foldable wall section of the tubular element. The foldable wall section has a reduced bending stiffness relative to a remainder wall section of the tubular element and is deformable from an unfolded mode to a folded mode by application of a compressive folding force to the tubular element. The foldable wall section when in the folded mode comprises at least one annular fold extending radially outward into said annular space. The wellbore system further comprises a folding device for applying said folding force to the tubular element.
摘要:
The present invention provides a system for anchoring an expandable tubular to a borehole wall. The system comprises a support member having a first end fixed relative to the outside of the tubular and a second end comprising a ramping surface. An anchor member has a first end fixed relative to the outside of the tubular and a second end extending toward the support member, said second end being movable relative to the outside of the tubular. Said support member includes a ramp surface that tapers in the direction of said anchor member. Expansion of the portion of the expandable tubular between the first support end and the first anchor end causes the axial device length to shorten, wherein the difference in length is sufficient to cause the second anchor end to move radially outward and engage the borehole wall as a result of engagement with said ramping surface.
摘要:
The present invention relates to an annular barrier system for expanding an annular barrier in an annulus between a well tubular structure and an inside wall of a borehole downhole. The annular barrier system comprises an annular barrier having a tubular part for mounting as part of the well tubular structure, the annular barrier further comprising an expandable sleeve surrounding the tubular part, at least one end of the expandable sleeve being fastened in a fastening means of a connection part in the tubular part. The annular barrier system also comprises a tool for expanding the expandable sleeve by letting a pressurised fluid through a passage in the tubular part into a space between the expandable sleeve and the tubular part.
摘要:
A method of forming a tubular conduit in a borehole, wherein the borehole is closed by means of a pressure barrier capable of sustaining a borehole pressure and having at least one pressure sealable inlet, comprises: introducing a substantially flat, elongate flexible member into the borehole; and forming the flexible member into a tubular form to define the conduit inside the borehole below the pressure barrier. An apparatus for forming a tubular conduit in a borehole closed by a pressure barrier capable of sustaining a borehole pressure and having at least one pressure sealable inlet, comprises: a supply of a substantially flat, elongate flexible member; a feed system for introducing the member into the borehole; and a former below the pressure barrier for forming the flat member into a substantially tubular conduit in the borehole.
摘要:
An intelligent well system and method has a sand face completion and a monitoring system to monitor application of a well operation. Various equipment and services may be used. In another aspect, the invention provides a monitoring system for determining placement of a well treatment. Yet another aspect of the invention is an instrumented sand screen. Another aspect is a connector for routing control lines.
摘要:
A method for sealing a flexible liner that has been emplaced in a borehole manifesting artesian water flow. The upper end of the liner is closed with a plug, and a mud tube is extended from the plug down to a small volume of mud at the bottom end of the liner. The pressure in the liner interior is increased according to the weight of the mud column in the mud tube. Pressure in the liner interior can be regulated by allowing mud to move up and down in the mud tube, and by adding or withdrawing water from the closed liner interior.
摘要:
Described herein is a tubular apparatus for making rigid tubular structures, comprising a flexible cylindrical wall (11, 11′) defining inside it a hollow passage (19), and suited for being wound, in particular on a spool, and continuously laid for use. According to the invention, said cylindrical wall (11, 11′) comprises a fabric (12, 13, 15, 12′, 13′, 15′) comprising inside it at least one gap (14;14′), which develops in the axial direction of said cylindrical wall (11, 11′), said fabric (12, 13, 15; 12′, 13′, 15′) comprising means suitable for operating under traction (15, 15′) when present within said at least one gap (14; 14′) is a fluid (20), injected under pressure for stiffening the tubular apparatus (10; 10′).
摘要:
Embodiments disclose a sand screen apparatus for use in a well that intersects a hydrocarbon formation. The sand screen apparatus comprises a composite, the composite having a compressed state and an expanded state. In embodiments, the composite comprises a base polymer and one or a plurality of reactive fillers where the reactive fillers react with the base polymer in the expanded state after exposure to a first trigger.
摘要:
A radially expandable device including a tubular body formed from an extruded member having an extrusion direction. The extruded member is configured after extrusion of the extruded member so that the extrusion direction aligns with a resulting circumference of the tubular body during formation of the tubular body from the extruded member. The extruded member is formed from a material operatively arranged to disintegrate upon exposure to a selected borehole fluid. The tubular body is operatively arranged to be expanded from a first radial dimension to a second radial dimension. Methods of making and using a radially expandable device are also included.
摘要:
An expandable structure for passive deployment in a well. The structure may be locked in a position determined by the inner dimensions of the well in which it is deployed. Practical uses for the structure may include production tubing or a host of other devices for affixing downhole with a final diameter as determined by the inner diameter of the well. Additionally, the structure may be configured for advancement to a targeted well location while in a collapsed state. Thus, upon deployment, subsequent structures may be advanced through the expanded/deployed structure. As such, affixed structures may be deployed downhole in both top-down and bottom-up fashions without concern over a prior deployed structure obstructing subsequent structure deployment downhole thereof.