Abstract: A downhole tool includes a housing configured to be connected between two tubular members. The housing includes a chamber and a plug assembly is disposed in the chamber and divides the chamber into an up-hole portion and a downhole portion. The plug assembly includes a glass member having a predetermined residual surface compression, at least a first face, and at least one strength-reducing surface feature on the first face. The strength-reducing surface feature is configured to cause the glass member to disintegrate when the glass member is exposed to a pressure in the up-hole portion of a magnitude that creates a tensile stress on the first face that exceeds the predetermined residual surface compression.

Abstract: Plug assemblies for plugging a wellbore tubular and methods relating thereto are disclosed. In an embodiment, the plug assembly includes a central axis and a seal sub including a plurality of axially extending fingers and a tapered outer surface. In addition, the plug assembly includes a sealing element coupled to the axially extending fingers of the seal sub. Further, the plug assembly includes a slip sub including a tapered inner surface, and a plurality of axially extending fingers. The fingers of the slip sub each include one or more teeth. The seal sub is configured to be at least partially inserted within the slip sub so that the tapered outer surface engages with the tapered inner surface, and axial advance of the tapered inner surface within the tapered outer surface is to radially expand the fingers of the slip sub to engage with an inner surface of the tubular.

Abstract: Plug assemblies for plugging a wellbore tubular and methods relating thereto are disclosed. In an embodiment, the plug assembly includes a central axis and a seal sub including a plurality of axially extending fingers and a tapered outer surface. In addition, the plug assembly includes a sealing element coupled to the axially extending fingers of the seal sub. Further, the plug assembly includes a slip sub including a tapered inner surface, and a plurality of axially extending fingers. The fingers of the slip sub each include one or more teeth. The seal sub is configured to be at least partially inserted within the slip sub so that the tapered outer surface engages with the tapered inner surface, and axial advance of the tapered inner surface within the tapered outer surface is to radially expand the fingers of the slip sub to engage with an inner surface of the tubular.

Abstract: A system includes a tubular string and a hollow ball. The tubular string is adapted to be deployed downhole in a well and includes a seat. An activation ball adapted to be deployed in the well to lodge in the seat. The ball includes an outer shell that forms a spherical surface. The outer shell forms an enclosed volume therein, and the outer shell is formed from a metallic material.

Abstract: A system includes a tubular string and a hollow ball. The tubular string is adapted to be deployed downhole in a well and includes a seat. An activation ball adapted to be deployed in the well to lodge in the seat. The ball includes an outer shell that forms a spherical surface. The outer shell forms an enclosed volume therein, and the outer shell is formed from a metallic material.

Abstract: A system includes a tubular string and a hollow ball. The tubular string is adapted to be deployed downhole in a well and includes a seat. An activation ball adapted to be deployed in the well to lodge in the seat. The ball includes an outer shell that forms a spherical surface. The outer shell forms an enclosed volume therein, and the outer shell is formed from a metallic material.

Abstract: A system includes a tubular string that is adapted to be deployed downhole in a well and an activation ball. The activation ball is adapted to be deployed in the tubular string to lodge in a seat of the string. The ball includes a spherical body, which is formed from a metallic material that has a specific gravity less than about 2.0.