Abstract: A sealing device relates to a plug that includes a crusher mechanism, where the sealing device includes one or more glass layers positionable in a wellbore. The glass in a barrier phase bears against at least one seat or support sleeve arranged axially displaceably in the wellbore, where the at least one seat or support sleeve bears against the glass by means of a supporting hydraulic fluid in a pressure support chamber, the seat or support sleeve being configured to be released, be displaced axially, and to crush the glass when the supporting hydraulic fluid is released from the pressure support chamber.

Abstract: A device and a method are for perforating downhole casings. The method includes arranging a device on a drill string, running the device into a bore hole, dropping a ball down through the drill string down to the device for causing a first sequence of pressure rise and relief, causing a firing system to trigger a charge for punching one or more holes through a surrounding casing wall in response to the first sequence of pressure rise and relief, driving the pressure inside of the drill string up to a second level, and causing a rupture disc at the second level to burst so as to establish a fluid communication between the inside and outside of the drill string through the opening in the pipe wall of the pipe section.

Abstract: An injection device comprises a housing comprising an inlet and an outlet and an outlet sleeve mounted within the housing and comprising at least one radial flow port therethrough for permitting fluid communication between the inlet and the outlet. A flow sleeve is mounted over the outlet sleeve and is arranged to move between a first position in which the at least one radial flow port is at least partially closed and a second position in which the at least one radial flow port is opened. The injection device also includes a flow sleeve actuator operable by a biasing arrangement and inlet pressure at the inlet of the housing to permit the flow sleeve to be selectively moved between its first and second positions to vary flow through the at least one radial flow port between the inlet and the outlet.

Abstract: An apparatus for regulating the flow of a fluid from a source to a target location comprises a housing defining a fluid inlet configured to communicate with a fluid source and a fluid outlet configured to communicate with a target location, and a flow path extending between the fluid inlet and fluid outlet. An inlet valve assembly is mounted in the flow path and comprises a valve seat and a valve member configured to cooperate with the valve seat to regulate flow through the flow path. A balance arrangement is provided and is configured to balance the effect of fluid pressure acting on the inlet valve assembly.

Abstract: A device is described for a fluid operated valve body 200 for activation of a fluid operated tool, said valve body 200 is connected to a pipe section 11 of a pipe 160 arranged in a well 120 in a formation 140, and the device is characterized in that the valve comprises a plunger piston 5 in a channel 232, which plunger piston 5 is reset from a closed to an open position to let fluid into the tool, said resetting takes place with a piston 210, said piston 210 is brought to a number of stepwise forwards and backwards movements by increasing and decreasing, respectively, the fluid pressure P2, and said movements affect a slide body 14 which is moved stepwise, in one direction, to a position where it opens for balls 8 to fall out of channel 232, thereby releasing the plunger piston 5 to move and open for fluid flow P to the fluid operated tool.

Abstract: A plug element for conducting tests of a well, a pipe or the like, comprising one or more plug bodies of disintegratable/crushable material set up to be ruptured by internally applied effects, is disclosed. The plug element of the invention comprises an internal hollow space set up to fluid communicate with an external pressure providing body, and the plug is designed to be blown apart by the supply of a fluid to the internal hollow space so that the pressure in the hollow space exceeds an external pressure to a level at which the plug is blown apart.

Abstract: A device is described for a system for conducting tests of a well, pipe or the like, where a plug of a removable material is inserted in a pipe through a well to carry out said tests. The device is characterized in that the wall parts of the pipe comprise channel borings (3,4,8) that set up fluid connections between the well space (70) and the well space (72) above and below, respectively, the plug, and that it comprises a closing body that can close the fluid connection permanently. The channel boring is preferably defined by an axial hollow space/chamber (4) in which a piston is arranged, said piston can be readjusted by an axial movement from a first position where there is fluid connection through the channel and a second position where the connection is permanently closed and can not be reopened.

Abstract: A device and a method are for perforating downhole casings. The method includes arranging a device on a drill string, running the device into a bore hole, dropping a ball down through the drill string down to the device for causing a first sequence of pressure rise and relief, causing a firing system to trigger a charge for punching one or more holes through a surrounding casing wall in response to the first sequence of pressure rise and relief, driving the pressure inside of the drill string up to a second level, and causing a rupture disc at the second level to burst so as to establish a fluid communication between the inside and outside of the drill string through the opening in the pipe wall of the pipe section.

Abstract: An injection device for use in injecting a fluid into a target location comprises a housing and a valve assembly located within the housing. The housing defines an inlet for communicating with an injection line, an outlet for communicating with a target location, and an injection fluid flow path extending between the inlet and outlet. The valve assembly located is configured to control the flow of injection fluid along the flow path and comprises first and second valve members both arranged to move within the housing, wherein in an open configuration to permit flow the first and second members are disengaged, and in a closed configuration to prevent flow the first and second members are engaged and the first valve member is biased against the second member by inlet fluid pressure to assist sealing therebetween.

Abstract: A device is described for combined fluid replacement and pressure testing in pipes with inaccessible end points. The device is characterized in that it is a two-piece circulation valve structure comprising: a first valve unit (4) comprising a seal element (1) which closes and opens depending on the dynamic fluid pressure through the valve, and a second valve unit (6) arranged to permanently close off the fluid flow when the pressure testing terminates. The first valve unit (4) comprises an elastic sealing ring (1) arranged to close against a seat in the valve unit in step with an increase in the fluid flow velocity through the valve, while the second valve unit is a casing (6) which is arranged inside the valve an closes when a pressure differential arises between a chamber (7) and the inside of the valve (4).

Abstract: An apparatus for regulating the flow of a fluid from a source to a target location comprises a housing defining a fluid inlet configured to communicate with a fluid source and a fluid outlet configured to communicate with a target location, and a flow path extending between the fluid inlet and fluid outlet. An inlet valve assembly is mounted in the flow path and comprises a valve seat and a valve member configured to cooperate with the valve seat to regulate flow through the flow path. A balance arrangement is provided and is configured to balance the effect of fluid pressure acting on the inlet valve assembly.

Abstract: A plug (20) is described for carrying out tests of a well (30), a pipe or the like, comprising an explosive charge (55) with an activation mechanism (50, 51, 53) and which is detonated to remove the plug when the test is completed, and the plug is characterized in that the explosive charge elements are arranged internally in the plug. The plug preferably comprises a boring (54) that holds said explosive charge (55) with the activation mechanism, and it can alternatively comprise two or more borings (54) for the placing of a corresponding number of explosive charges (55) with activation mechanisms. The explosive charge (55) with ignitor (56) and ignition pin (57) is preferably arranged in the plug boring (54) while the other parts (50, 51, 53) of the activation mechanism are integrated in the wall of the pipe bundle (10) that holds the plug.

Abstract: A device is described for removal of a plug which is used in a well, a pipe, or the like for carrying out tests, and it is characterized by an element which, with an applied forced, is arranged to penetrate into the plug material so that this is crushed, said element is arranged to be supplied said force from an above lying element. The element (16) is preferably a ring (1) the lower end of which is arranged to be forced in a radial direction into the plug element at axial driving of a hydraulic pressure piston. Furthermore, the element is integrated into the plug.

Abstract: A method for detonation of a plug device in a fluid environment is described, which is in contact with a body, such as an ignition pellet, and it is characterized in that a number of pressure increases are exerted against the plug device, whereby each pressure increase causes a movement of a piston (10) which is radially arranged in a casing (12), which causes the casing (12) to move a fixed distance inward in the plug device with each pressure increase, up until the displacement of the casing (12) causes the piston to be displaced into a cavity (38), and the fluid environment enters the plug device via an inlet. Also described is a plug device which is in contact with a body, such as an ignition pellet, where the plug device is arranged to detonate after a number of pressure increases that are exerted against the plug device.

Abstract: A plug element for conducting tests of a well, a pipe or the like, comprising one or more plug bodies of disintegratable/crushable material set up to be ruptured by internally applied effects, is disclosed. The plug element of the invention comprises an internal hollow space set up to fluid communicate with an external pressure providing body, and the plug is designed to be blown apart by the supply of a fluid to the internal hollow space so that the pressure in the hollow space exceeds an external pressure to a level at which the plug is blown apart.

Abstract: A device is described for a plug (12) for pressure testing of bore holes and the like in a formation or the like, and associated pipe (10) in which the plug is installed in a plug-carrying chamber (14), and the plug (12) seals the passage through the pipe by cooperating with sealing bodies (23, 25), with the underside of the plug (12) being arranged (rests) in a seat at the bottom of the chamber. The plug is characterized in that it comprises a number of layer-formed or tier-formed ring disc elements of a given thickness, on fitted on top of the other.