Abstract: A downhole plug and method of activating multiple downhole tools in a subterranean formation are disclosed. The plug includes a detachable ring that enables the plug to land in and engage at least two different seats, each seat having a different profile. This in turn enables the plug to activate at least two separate downhole devices, one in an upper downhole tool and one in a lower downhole tool. The ring separates from the plug once a certain pressure is reached in the wellbore enabling the plug to travel downhole from the upper tool to the lower tool to activate the device in the lower downhole tool.

Abstract: A packer assembly includes an elongate body, at least one sealing element disposed about the elongate body, and a shoulder disposed about the elongate body and positioned axially adjacent the at least one sealing element. A cover sleeve is coupled to an outer surface of the shoulder. An annular support shoe has a jogged leg, a lever arm, and a fulcrum section that extends between and connects the jogged leg to the lever arm. The jogged leg is received within a gap defined between the cover sleeve and the shoulder, and the lever arm extends axially over a portion of the sealing element.

Abstract: A packer assembly includes an elongate body, an upper shoulder and a lower shoulder each disposed about the elongate body, and an upper sealing element and a lower sealing element each disposed about the elongate body and positioned axially between the upper and lower shoulders. A spacer interposes the upper and lower sealing elements and has an annular body that provides an upper end, a lower end, and a recessed portion extending between the upper and lower ends. A diameter of the annular body at the upper and lower ends is greater than the diameter at the recessed portion.

Abstract: A differential fill valve assembly for application in float collars or shoes in a well casing can provide locking mechanisms to limit premature movement of an activating sleeve while facilitating desired advancement of the activating sleeve. The valve assembly comprises a backpressure flapper valve and an activating sleeve slidably disposed within a housing. The activating sleeve initially maintains the flapper valve in an open position while the activating sleeve is maintained in its position by upper and/or lower lock rings on either side of a shoulder of the activating sleeve. A tripping ball is dropped to seat in the activating sleeve. Pressure applied on the ball moves the activating sleeve downward, releasing the backpressure flapper valve, after which the tripping ball exits the bottom of the assembly. The lower lock ring maintains the activating sleeve in its lower position.

Abstract: A differential fill valve assembly for application in float collars or shoes in a well casing can provide a mechanism for releasing a flapper valve by advancing and activating sleeve of the valve assembly. The valve assembly includes a backpressure flapper valve and an activating sleeve slidably disposed within a housing. The activating sleeve initially maintains the flapper valve in an open position. The activating sleeve provides at least one ramp on an inner surface thereof. Fluid flow through the activating sleeve generates a pressure differential, across the activating sleeve that produces a net force on the activating sleeve to drive the activating sleeve downward, releasing the backpressure flapper valve.

Abstract: A method and apparatus for preventing fluid flow and contamination to a cement body includes a resin cap covering an exposed end of the cement body. The cement body may attach an inner sleeve to an outer sleeve. The fluid flowing through the outer sleeve is prevented from contacting the exposed surface by the resin cap. Resin caps at both ends of the cement body along with resin layers along the side may be included. The resin prevents contamination and creation of micro-annuli in the cement body.

Abstract: In accordance with embodiments of the present disclosure, a debris separator device for use with a casing system may include an impeller having a plurality of blades to generate a vortex of mud in the section of the casing system when the casing system is lowered into a wellbore. The device may also include a baffle disposed in the section of the casing system, the baffle having an annular cup shape that forms an outer circumferential pocket to capture debris from the vortex of mud. The impeller and baffle may enable the debris separator device to separate debris and other debris from a flow of mud through the casing system so that the debris does not clog a float collar of the system. The disclosed debris separator device may be flushable so that the device does not become clogged with debris and can thereby maintain auto-fill through the casing system.

Abstract: A method and apparatus for preventing fluid flow and contamination to a cement body includes a resin cap covering an exposed end of the cement body. The cement body may attach an inner sleeve to an outer sleeve. The fluid flowing through the outer sleeve is prevented from contacting the exposed surface by the resin cap. Resin caps at both ends of the cement body along with resin layers along the side may be included. The resin prevents contamination and creation of micro-annuli in the cement body.

Abstract: A downhole assembly can include plates in series along a length of a tubular member. Plates can include particulate-blocking areas and pass-through areas. A pass-through area of a plate can be angularly offset from a pass-through area of another plate in the series. The plates may be angled so that particulate carried by fluid from a wellbore may be trapped by particulate-blocking areas that may be tilted away from the fluid source.

Abstract: Improved cementing plugs and methods of using these cementing plugs in subterranean wells are disclosed. A cementing plug comprises a hollow mandrel and one or more wiper elements coupled to the mandrel. A nose is coupled to the hollow mandrel and is movable between a retracted position and an extended position. A portion of the nose is positioned within the mandrel when in the retracted position. This portion of the nose is positioned outside the mandrel when in the extended position.

Abstract: A method of servicing a wellbore comprising placing a wellbore servicing apparatus into a wellbore, wherein the wellbore servicing apparatus contains a plurality of mobilized template-assisted crystallization beads and contacting a fluid comprising scale-forming ions with at least a portion of the template-assisted crystallization beads. A method of servicing a wellbore, comprising contacting a fluid comprising scale-forming ions with a quantity of template-assisted crystallization beads in a vessel to form a treated fluid, wherein the template-assisted crystallization beds are mobile within the vessel and placing the treated fluid into a wellbore, a subterranean formation, or a combination thereof.

Abstract: A check valve is provided having a magnetic plug and a magnetic seat. The magnetic seat and magnetic plug operationally engage so as to have a magnetic resistivity such that there is a first position in which the magnetic plug does not sealingly engage the magnetic seat and a second position where the magnetic plug is sealingly engaged with the magnetic seat.

Abstract: Improved cementing plugs and methods of using these cementing plugs in subterranean wells are disclosed. A cementing plug comprises a hollow mandrel and one or more wiper elements coupled to the mandrel. A nose is coupled to the hollow mandrel and is movable between a retracted position and an extended position. A portion of the nose is positioned within the mandrel when in the retracted position. This portion of the nose is positioned outside the mandrel when in the extended position.

Abstract: Improved cementing plugs and methods of using these cementing plugs in subterranean wells are disclosed. A cementing plug comprises a hollow mandrel and one or more wiper elements coupled to the mandrel. A nose is coupled to the hollow mandrel and is movable between a retracted position and an extended position. A portion of the nose is positioned within the mandrel when in the retracted position. This portion of the nose is positioned outside the mandrel when in the extended position.

Abstract: A method of servicing a wellbore comprising placing a wellbore servicing apparatus into a wellbore, wherein the wellbore servicing apparatus contains a plurality of mobilized template-assisted crystallization beads and contacting a fluid comprising scale-forming ions with at least a portion of the template-assisted crystallization beads. A method of servicing a wellbore, comprising contacting a fluid comprising scale-forming ions with a quantity of template-assisted crystallization beads in a vessel to form a treated fluid, wherein the template-assisted crystallization beds are mobile within the vessel and placing the treated fluid into a wellbore, a subterranean formation, or a combination thereof.

Abstract: A method of servicing a wellbore comprising placing a wellbore servicing apparatus into a wellbore, wherein the wellbore servicing apparatus contains a plurality of mobilized template-assisted crystallization beads and contacting a fluid comprising scale-forming ions with at least a portion of the template-assisted crystallization beads. A method of servicing a wellbore, comprising contacting a fluid comprising scale-forming ions with a quantity of template-assisted crystallization beads in a vessel to form a treated fluid, wherein the template-assisted crystallization beds are mobile within the vessel and placing the treated fluid into a wellbore, a subterranean formation, or a combination thereof.

Abstract: Improved cementing plugs and methods of using these cementing plugs in subterranean wells are disclosed. A cementing plug comprises a hollow mandrel and one or more wiper elements coupled to the mandrel. A nose is coupled to the hollow mandrel and is movable between a retracted position and an extended position. A portion of the nose is positioned within the mandrel when in the retracted position. This portion of the nose is positioned outside the mandrel when in the extended position.