Abstract: Example of the present disclosure relate to frac sleeve with set of inner sleeves that allow selective open and close of such sleeves, where clusters of the same frac sleeves to be treated top to bottom.

Abstract: Example of the present disclosure relate to frac sleeve with set of inner sleeves that allow selective open and close of such sleeves, where clusters of the same frac sleeves to be treated top to bottom.

Abstract: Example of the present disclosure relate to frac sleeve with set of inner sleeves that allow selective open and close of such sleeves, where clusters of the same frac sleeves to be treated top to bottom.

Abstract: Example of the present disclosure relate to frac sleeve with set of inner sleeves that allow selective open and close of such sleeves, where clusters of the same frac sleeves to be treated top to bottom.

Abstract: A valve for inclusion or insertion in a tubular includes a substantially cylindrical outer valve housing; an inner sliding sleeve mounted axially movable inside the valve housing; and a seat arranged for receiving a drop ball, dart or falling device. The seat is built in such a way that it can partially or completely be removed or drilled out from the valve. The inner sliding sleeve includes a first profile arranged at a first end of the inner sliding sleeve and a second profile arranged at a second end of the inner sliding sleeve, wherein the first profile and the second profile are configured to be engaged with an activating or shifting tool inserted and run in the tubular after the seat has been partially or completely removed or drilled out from the valve in order to operate the valve from an open to a closed position and/or vice versa.

Abstract: A downhole tool includes a housing and a mandrel glidingly arranged within the housing, wherein the mandrel is formed as a piston. The flange is acting on a spring arranged around the mandrel. In a first position of the mandrel, a fluid flow can run 100% through the tool via a first nozzle at a first end of the housing, the inside of the mandrel and a second nozzle at a second end of the housing. At a predetermined flow rate and with the help of a passage arranged in the housing wall and connecting the first side of the tool with the space or ring room on the non-spring side of the mandrel and a side port in the mandrel on its spring side, the mandrel will be moved towards the second nozzle due to sufficient force acting on a flange of the mandrel thus overcoming the spring resistance.

Abstract: A protective sleeve for a ball activated device, the ball activated device comprising a seat sleeve axially movable between an initial state in which seat defining members are configured to form a fluid tight seal with a ball and a final state in which the seat defining members are allowed to enter into a seat receiving recess such that the ball is permitted to pass. In the initial state, the protective sleeve extends axially from the seat sleeve over the seat receiving recess. The protective sleeve can be connected in the extension of the seat sleeve through a rotation lock, and ensures that particles and scaling do not build up in the seat receiving recess. The invention prevents that particles are collected behind the seat defining members and prevent these and other movable parts from moving. The protective sleeve is thus particularly suitable for applications such as cementing or fracturing.

Abstract: A trigger mechanism for a ball activated device (100) comprises a seat sleeve (130) with seat defining members (132) forming a fluid tight seal with a ball (300) in an initial state and allowing the ball (300) to pass in a final state. An alternating member (125) can move radially in an aperture (124) through an inner sleeve (120) and abuts an outer surface on the seat sleeve (130) in the initial state, is received in a recess (134) on the seat sleeve (130) in an intermediate state, and is received in a groove (114) in the outer sleeve (110) in the final state. A protective sleeve (150) may extend axially from the seat sleeve (130) over a seat receiving area (115). The mechanism is suitable for cementing and fracturing as particles cannot penetrate to its moving parts.

Abstract: A protective sleeve for a ball activated device, the ball activated device comprising a seat sleeve axially movable between an initial state in which seat defining members are configured to form a fluid tight seal with a ball and a final state in which the seat defining members are allowed to enter into a seat receiving recess such that the ball is permitted to pass. In the initial state, the protective sleeve extends axially from the seat sleeve over the seat receiving recess. The protective sleeve can be connected in the extension of the seat sleeve through a rotation lock, and ensures that particles and scaling do not build up in the seat receiving recess. The invention prevents that particles are collected behind the seat defining members and prevent these and other movable parts from moving. The protective sleeve is thus particularly suitable for applications such as cementing or fracturing.

Abstract: A downhole tool includes a housing and a mandrel glidingly arranged within the housing, wherein the mandrel is formed as a piston. The flange is acting on a spring arranged around the mandrel. In a first position of the mandrel, a fluid flow can run 100% through the tool via a first nozzle at a first end of the housing, the inside of the mandrel and a second nozzle at a second end of the housing. At a predetermined flow rate and with the help of a passage arranged in the housing wall and connecting the first side of the tool with the space or ring room on the non-spring side of the mandrel and a side port in the mandrel on its spring side, the mandrel will be moved towards the second nozzle due to sufficient force acting on a flange of the mandrel thus overcoming the spring resistance.

Abstract: The present invention provides a simple, robust, durable and reliable cylindrical valve, valve system and method for completion, stimulation and subsequent re-stimulation of well(s)for hydrocarbon production.

Abstract: A valve system for providing fluid flow through radial openings disposed along an axial length of a tubular. The tubular comprises at least one valve group containing at least two valves operable by one drop ball. An inset 302 e.g. of standard grade steel provided in a harder liner 301 in the opening provides an intermediate small opening for at least the time required to open all the remaining valves in the group. The small opening limits the pressure drop over the valve. When all valves are open, the insets 302 are eroded away by an abrasive material, e.g. a slurry used for hydraulic fracturing, and permanent full openings are created.

Abstract: A packer for sealing against an inner cylindrical mandrel and a wellbore wall.

Abstract: Two well tools (100, 200) having centrally mounted drive shafts (160, 260) are provided with a mechanism to remove debris from a coupling between them. Thereafter, the tools can be coupled by inserting a first outer sleeve (110) on the first tool into and rotationally lock it to a second outer sleeve (210) on the second tool. The drive shafts (160, 260) are coupled in a similar manner. The mechanism for removing debris can displace the debris and/or a flushing device (170) using well fluid to stir up debris. The coupling has space for debris that is not removed, e.g. in the form of a chamber 264. The female part of the coupling may comprise a spring loaded lid (271) to reduce pollution by debris when the coupling is not in use.

Abstract: The present invention provides a robust, durable and reliable cylindrical valve having closable, radially extending openings for use in cementing, injection, including hydraulic fracturing, and production in wells having high pressures and large pressure differences. The valve may comprise scraping rings in order to remove deposits and the like when it is to be closed after use. Magnets or other suitable means indicates whether the valve is in an open or closed position.

Abstract: A well plug having a flexible expandable sealing (330) and a metallic anchor (350) which can be moved radially out or in by rotating a leadscrew (170) in opposite directions. The well plug has a ball valve in a central longitudinal passage, which is kept open whenever the leadscrew (160) rotates. This increases the accuracy when setting the plug, and reduces the risk for the plug moving uncontrolled in the well bore during setting or retrieval. The ball valve can be opened or closed by rotating a transmitting shaft (120, 140) within an angle of free motion, before the leadscrew is pulled along in the rotation. A ball valve for high pressure applications is also shown.

Abstract: Apparatus and method for penetrating cement (300) surrounding a tubular (200) cemented to a formation (400). The apparatus comprises a bore (10) through the tubular wall (200), and an intermediate fluid channel (102) in an insert (100) within the bore. An inner sleeve (120) may be disposed on the interior surface of the tubular wall (200). The inner sleeve (120) is movable between a closed position wherein fluid connection between the interior of the tubular and the bore is prevented, and an open position wherein fluid connection between the interior of the tubular and the bore is allowed. An abrasive and/or etching fluid is supplied through the channel (102) to remove cement and/or the insert (100) or piston assembly.

Abstract: A packer for sealing against an inner cylindrical mandrel and a wellbore wall.

Abstract: Apparatus for a drop ball activated device, where a ball seat is concentrically and axially slidably disposed within an outer sleeve having a first internal cylindrical surface, wherein the ball seat comprises at least one radially extending lug, which in a first position extends radially inwards from the internal cylindrical surface, thereby defining a first ball seat diameter less than the diameter of the drop ball. The sleeve comprises at least one groove in its internal surface, and the lug may be received in the groove, thereby defining a second ball seat diameter at least as large as the diameter of the drop ball.

Abstract: A valve system for providing fluid flow through radial openings disposed along an axial length of a tubular. The tubular comprises at least one valve group containing at least two valves operable by one drop ball. An inset 302 e.g. of standard grade steel provided in a harder liner 301 in the opening provides an intermediate small opening for at least the time required to open all the remaining valves in the group. The small opening limits the pressure drop over the valve. When all valves are open, the insets 302 are eroded away by an abrasive material, e.g. a slurry used for hydraulic fracturing, and permanent full openings are created.