Abstract:
The present invention relates to a well tool device (1). A housing (10) has an inner surface (11) defining a through bore (12). A frangible disc (20) comprising upper and lower chamfered supporting surfaces (20a, 20b) and is supported by a seat (40) in relation to the housing (10). A force transmitting device (30) provided is between the frangible disc (20) and the seat (40). The force transmitting device (30) is comprising an upper contact ring (31) provided between the upper chamfered supporting surface (20a) of the frangible disc (20) and the seat (40) and a lower contact ring (35) provided between the lower chamfered supporting surface (20b) of the frangible disc (20) and the seat (40).
Abstract:
An example downhole tool is disclosed and includes a wellbore isolation device that provides a plurality of components including one or more first components and one or more second components. Each component is made of a degradable material that degrades when exposed to a wellbore environment, and the one or more first components degrades at a first degradation rate while the one or more second components degrades at a second degradation rate that is slower than the first degradation rate.
Abstract:
A method for setting a barrier within a wellbore comprises deploying a first plug assembly into a wellbore on a running string, wherein the first plug assembly comprises an extendable arrangement, and then setting the first plug assembly within the wellbore by extending the extendable arrangement. A settable medium is injected via the running string into the wellbore above the first plug assembly.
Abstract:
The present invention relates to downhole tools and methods of removing such tools from wellbores. More particularly, the present invention relates to downhole tools designed to be comprised of dissolvable materials or frangible materials and methods for dissolving or fragmenting such downhole tools in situ.
Abstract:
A downhole slip system includes a metal slip structure; and a composite undercarriage adhered to the inner surface of the metal slip structure. A method for manufacturing a downhole slip system includes: disposing a bulk molding compound in contact with the inner surface of a metal slip structure within a mold; compressing the metal slip structure and the bulk molding compound; and curing the compressed bulk molding compound.
Abstract:
Embodiments of a bottomhole assembly BHA for completion of a wellbore are deployed on electrically-enabled coiled tubing (CT) and permit components of the BHA to be independently electrically actuated from surface for completion of multiple zones in a single trip using a single BHA having at least two electrically-actuated variable diameter packers. One or both of the packers may be actuated to expand or retract for opening and closing off a variety of flowpaths between the BHA and the wellbore, in new wellbores, old wellbores, cased wellbores, wellbores with sleeves and in openhole wellbores. Additional components in the BHA, which may also be electrically–actuated or powered, permit perforating, locating of the BHA in the wellbore such as using casing collar locators and microseismic monitoring in real time or in memory mode.
Abstract:
The present invention relates to a well barrier (114) for sealing off a first portion of a wellbore from a second portion of the wellbore, the first portion having a higher fluid pressure than the second portion, wherein the well barrier is held in place in the wellbore by a holding means (207; 602; 805, 806), wherein the well barrier (114) being preshaped to disintegrate in at least three barrier elements (114a, 114b, 114k) upon activation of a disintegration means (113; 901), at least one of the barrier elements having a surface area facing the first portion of the wellbore that is larger than the surface area facing the second portion of the wellbore; and to a method for controlling a disintegration of the well barrier.
Abstract:
A well tool can include a flow path, and a flow blocking device which selectively prevents flow through the flow path. The device can include an anhydrous boron compound. A method of constructing a downhole well tool can include forming a structure of a solid mass comprising an anhydrous boron compound, and incorporating the structure into the well tool.
Abstract:
An isolation device for a frac plug, the isolation device including a ball seat having a seating surface and a ball configured to contact the seating surface, wherein a profile of the seating surface corresponds to a profile of the ball. A frac plug including a mandrel having an upper end and a lower end, a sealing element disposed around the mandrel, and a ball seat disposed within a central bore of the mandrel, wherein the ball seat includes a seating surface having a non-linear profile. A method of isolating zones of a production formation, the method including setting a frac plug between a first zone and a second zone, disposing a ball within the frac plug, and seating a ball in a ball seat of the frac plug, the ball seat including a seating surface having a profile that substantially corresponds to the profile of the ball.
Abstract:
A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned, The fuel load may comprise a flammable, non-explosive solid, such as thermite.