Abstract: A downhole tool suitable for use in a wellbore, the tool having a cone, and a lower sleeve. The downhole tool includes an expansion sleeve, or a portion thereof, disposed around one end of the cone. After setting, the lower sleeve is engaged with the cone, leaving a remnant cone-sleeve component configured to plug a tubular.

Abstract: A downhole tool suitable for use in a wellbore, the tool having a cone, a first sleeve, and a lower sleeve. The downhole tool includes the first sleeve, or a portion thereof, disposed around one end of the cone. After activation, the lower sleeve is engaged with the first sleeve, leaving a remnant cone-sleeve component configured to plug a restriction.

Abstract: A downhole tool suitable for use in a wellbore, the tool having a cone, a first sleeve, and a lower sleeve. The downhole tool includes the first sleeve, or a portion thereof, disposed around one end of the cone. After activation, the lower sleeve is engaged with the first sleeve, leaving a remnant cone-sleeve component configured to plug a restriction.

Abstract: The extrusion barrier for a sealing element for a packer or bridge plug is energized when set to store a retractive force that can be deployed when the packer or plug is released. The structure is a coiled spring that has gaps in the run in position and has a relaxed diameter smaller than the borehole or surrounding tubular dimension. When the packer is set a cone acts in conjunction with the spring to compress the coils together into contact while increasing the diameter to bridge an annular gap to act as an extrusion barrier. In the set position there is a restorative potential energy force that when the spring is allowed to relax retracts the shape back to the run in shape for removal of the packer or plug. Some of the trailing end coils are of a smaller diameter so that the structure can be clamped there for forcible axial movements in opposed directions.

Abstract: A flapper valve includes a housing, a seat movably disposed at the housing at least between a first position and a second position, a flapper movably disposed at the seat at least between a seated position and an unseated position and at least two biasing members. A first biasing member is configured to bias the flapper toward the unseated position and the second biasing member is configured to bias the flapper toward the seated position.

Abstract: The extrusion barrier for a sealing element for a packer or bridge plug is energized when set to store a retractive force that can be deployed when the packer or plug is released. The structure is a coiled spring that has gaps in the run in position and has a relaxed diameter smaller than the borehole or surrounding tubular dimension. When the packer is set a cone acts in conjunction with the spring to compress the coils together into contact while increasing the diameter to bridge an annular gap to act as an extrusion barrier. In the set position there is a restorative potential energy force that when the spring is allowed to relax retracts the shape back to the run in shape for removal of the packer or plug. Some of the trailing end coils are of a smaller diameter so that the structure can be clamped there for forcible axial movements in opposed directions.

Abstract: A flapper valve includes a housing, a seat movably disposed at the housing at least between a first position and a second position, a flapper movably disposed at the seat at least between a seated position and an unseated position and at least one biasing member.

Abstract: An improved cone and integral slip assembly is described for use in the anchoring assembly of a downhole tool, such as a bridge plug, frac plug, or cement retainer. The cone may include external fins that are integral to and run axially along the cone. The integral slip assembly includes at least one axial slot, which facilitates subsequent breaking up of the integral slip assembly into individual slip segments. Each slip segment may include a channel that is adapted to mate with an external fin of the cone. As the integral slip assembly traverses the cone, the channels of the slip segments ride on the fins encouraging the integral slip assembly to break apart along the slots into the slip segments. The spacing of the fins and corresponding channels in the slip segments are positioned such to ensure that the slip segments are advantageously positioned around the cone thus, locating the packing element of the plug in the center of the wellbore.