Abstract: A rotating regulating device for the rotation and/or linear displacement of an actuating element of a valve, throttle, blowout preventer or similar, in particular in the field of gas or oil supply, exhibits a spindle drive and a drive train rotationally driving the spindle drive, the said drive train exhibiting at least one reduction gear unit and a drive device connected to it for movement.

Abstract: A pressure compensated shear seal solenoid valve for use in subsea control systems is disclosed utilizing an arcuate cross section fluid passageway to improve flow rates, ease of serviceability and reduce size.

Abstract: A valve actuator comprising a lower housing comprising a mounting spool that is operable to couple to a valve body. A rotating sleeve is disposed within the lower housing and coupled to a stem connector. A fixed sleeve in disposed within the lower housing and includes a first slot disposed therethrough. A second slot is disposed in the rotating sleeve, wherein at least one of the slots is a helical slot. An axle engages both the first slot and the second slot. A shaft is coupled to the axle and extends through a connector flange that is coupled to an upper end of the lower housing. A piston is coupled to the shaft and movably disposed within an upper housing that is coupled to the connector flange. Axial movement of the piston within the upper housing will result in rotational movement of the rotating sleeve.

Abstract: A wellhead has, instead of a conventional Christmas tree, a spool tree in which a tubing hanger is landed at a predetermined angular orientation. As the tubing string can be pulled without disturbing the tree, many advantages follow, including access to the production casing hanger for monitoring production casing annulus pressure, and the introduction of larger tools into the well hole without breaching the integrity of the well.

Abstract: A choke actuator having an integrated choke control system enabling fast closure and opening of the choke. The choke control system includes integral electronics to receive signals from a surface or subsea control module and control directional control valves to regulate the flow of hydraulic fluid from a local hydraulic supply to the choke actuator. Response times for choke actuation are greatly reduced by locating the electronic control system and directional control valves in an integrated package with the choke actuator and providing a local hydraulic supply. Additional embodiments may also include other electronic sensing and instrumentation enabling the choke control system to monitor and adjust the choke to maintain selected flow characteristics or in accordance with a predetermined production scheme. Any or all of the components of the choke, the choke control system, or the choke actuator may also be retrievable separately from the other components so as to allow maintenance and replacement.

Abstract: A throttle device comprises a device housing with an inlet and an outlet and a throttle element arranged in a connecting duct connecting the inlet and the outlet, said throttle element comprising at least two throttle components to be adjusted relative to one another and by the relative position of which an opening surface of the throttle element is determined, at least the first throttle component being actively connected with a drive means for an adjustment relative to the second throttle component.

Abstract: A valve, actuator and control system that allows minimizing the size of the actuator and operation of the control system in a manual mode that automatically prevents accidental operation by pipeline pressure is disclosed. The actuator uses gas pressure from the pipeline to power the actuator. In the event gas pressure is unavailable, a pair of manual hand pumps are incorporated to allow operation of the actuator and valve.

Abstract: A regulating device for the linear regulation of an actuating element is connected for movement to a ball spindle drive for the conversion of a rotational movement into a linear movement. The rotational movement can be transferred to the spindle drive from at least one motor via a gear unit. The gear unit exhibits a self-locking, helically toothed spur-wheel gear, which is formed as a double helical gear with at least one first and second spiral-toothed gearwheel. In each case at least one motor is arranged at both ends of the ball spindle drive and each motor is connected for movement with a second spiral-toothed gearwheel.

Abstract: A connecting mechanism for two parts, which are at least partially insertable into one another, presents a cam-operated component, which runs on bearings and which is adjustable between a passive and an active position, on the one part, for shifting a number of contact elements between a withdrawal and a contact position, whereby the contact elements, when in the contact position, mesh in a retaining indentation on the other part, and a driving device for the adjustment of the cam-operated component between the active and passive positions. In order to ensure a secure and stable connection of these parts, using simple design means without additional pre-stressing or restraining devices, even when the parts are only partially inserted into one another, the contact elements are arranged in two or more levels essentially parallel to the insertion direction of the two parts and the cam-operated component for shifting the contact elements between the withdrawal and contact positions is allocated to each level.

Abstract: Isolating device, in particular for an injection valve with a turning spindle, rotatably mounted in a device housing, actively connected to a drive device, for the variable displacement of an operating element for an isolation stop valve, connected to the turning spindle, by means of a gearbox unit. The aim of the invention is to improve said isolating device such that the above may be operated in a simple and controllable manner, whereby the control of the isolating device may be carried out from a remote position and in a secure manner. Said aim is achieved, whereby the drive device comprises at least two individually or synchronously operable electric motors and the gearbox unit comprises at least one in particular self-locking drive unit, said drive unit being connected to both electric motors for turning the turning spindle.

Abstract: A hydraulic control system for a valve actuator comprising a first control valve that regulates fluid communication from a fluid pressure source to a first fluid supply tank that is fluidly connected to the valve actuator. A second control valve regulates fluid communication from the fluid pressure source to a second fluid supply tank that is fluidly connected to the valve actuator. A flow control member regulates fluid communication between the first and second fluid supply tanks and an exhaust valve that regulates fluid communication between the first and second fluid supply tanks and an outlet.

Abstract: A transducer, a method and a coding pattern for determining a kinematic measurable variable are disclosed. A transducer comprises a first device part which is moveable in or through a corresponding device for oil or natural gas production and a second device part which is stationary relative to said first device part. To detect both the directions of movement and the respective position in a simple constructional and inexpensive way without the need for return movement up to ends of the range of movement, the first and/or second device part comprises a coding pattern which is changing along a direction of movement and of which position-specific patterns can be scanned by a scanning means which is arranged on the respective other device part. By scanning such a specific coding pattern during mutual relative movement of said objects or device parts a corresponding scanning signal can then be converted by an evaluation unit into a kinematic measurable variable.

Abstract: A drill-through spool body sleeve assembly comprises a test sleeve removably installed within a drill-through spool body having a bore with the terminal ends of the outer diameter of the test sleeve sealingly engaging the bore wall. The sleeve assembly also comprises a wear bushing removably installed in the bore between the bore wall and the test sleeve. The test sleeve is of sufficient thickness to pressure test the spool body outlets, ports, and valves before drilling and production. The test sleeve seals the bore from the outside of the spool body during the pressure testing. After the pressure tests are completed, the test sleeve is removed from the spool body, leaving the wear bushing in place. The wear bushing protects the bore wall, outlets, ports, and valves while allowing equipment such as drilling and wellhead equipment to pass through the spool body.

Abstract: A drive device serves for adjusting an operating element for a valve, a throttle, a blow-out preventor or the like, in particular in the field of gas and oil production, the operating element being actively connected to at least one driving motor via a drive train, and at least one transmission changing unit being arranged in the drive train for converting a revolution of the driving motor into a revolution of the operating element and/or a revolution/linear motion converter being arranged for converting the revolution of the driving motor into a linear motion of the operating element.

Abstract: A comprehensive system for the cleaning, inspection, and testing of tubulars, particularly riser pipes, is provided. In a first aspect, a method of inspecting a tubular comprises cleaning, visually inspecting, corrosion mapping, and TOM testing the tubular. In another aspect, a specially designed or adapted tool is provided for each of the steps of the method.

Abstract: In at least some embodiments a system may comprise a first master device, a second master device, a redundancy manager coupled to the first and second master devices, and a slave device coupled to the redundancy manager. The redundancy manager is operable to receive a first data stream from the first master device and a second data stream from the second master device. The redundancy manager is further operable to selectively forward one of the first and second data streams to the slave device according to a prioritization of factors calculated to optimize an amount of valid communication to the slave device.

Abstract: A variable bore ram packer including a ram body, a top seal and a packer member designed for use in a standard ram-type blowout preventer used in oil and gas drilling operations is disclosed. The packer member is molded of an elastomeric material having a central semi-elliptical opening with a plurality of packer inserts molded within the elastomeric material in a semi-circular pattern around the central semi-elliptical opening of the elastomeric material. The semi-circular pattern of the packer inserts and the semi-elliptical opening of the elastomeric material share a common axis. The packer member and the plurality of packer inserts are molded into a unitary structure allowing the plurality of packer inserts to move and seat against different diameter tubular members to prevent extrusion of the elastomeric material between the packer inserts and the tubular member.

Abstract: A seal assembly with an accumulator ring for protecting a seal from explosive decompression is disclosed. The accumulator ring and the seal are contained within a seal gland. The seal is made of a material that is susceptible to damage from explosive decompression. When exposed to a high-pressure fluid environment, the accumulator ring fills with a quantity of high-pressure fluid, either by permeation if it is solid or by permeation and/or vents and/or channels leading to a void if it is hollow. During an explosive decompression event, the accumulator ring expands to fill the remaining volume of the seal gland. Then, the accumulator ring exerts an axial compressive or supporting force on the seal for a sufficient amount of time to allow the seal to expel fluid contained in it and minimize the effects of explosive decompression thereto.

Abstract: A connection device for connecting a tubular member to another member comprises a clamp ring, which is arranged in an inner bore of an outer housing, and includes a plurality of clamping fingers which are deflectable essentially in radial direction relative to the inner bore and a deflecting bushing which is displaceable by at least one driving means in axial direction of the inner bore between a stand-by position and a deflecting position. The deflecting bushing in its deflecting position deflects the clamping fingers radially inwardly. The driving means comprises a rotatable, axially not displaceable spindle along which the deflecting bushing is movable.

Abstract: A displacement measuring device for measuring a path that has been covered by a moving object that can be displaced in a direction has at least one first component that is allocated to the moveable object and a second, stationary component. The components are interlinked for the purpose of converting a movement and/or displacement of the moving object into an electrical signal. The displacement measuring device also has an evaluation device for converting the electrical signal into movement and/or position information. The air of the invention is to ensure that the displacement measuring device has a high degree of accuracy, is not susceptible to wear, is resistant to vibration, shocks or corrosion and is economical to use in almost all media without any special sealing measures as well as in any pressure range.