Abstract: The downhole tractor further comprises a hydraulic power pack coupled to the hydraulic supply line, at least one hydraulic component and at least one further hydraulic component. The hydraulic components are coupled to the hydraulic supply line in parallel and configured for being actuated by the hydraulic supply line. The hydraulic supply line comprises a controllable valve placed at a location in between the at least one hydraulic component and the at least one further hydraulic component such that a first part of the hydraulic supply line is coupled to a second part of the hydraulic supply line via the controllable valve. The downhole tractor provides for much better control and facilitates tuning of the performance of the tractor to the actual needs.

Abstract: The downhole tool comprises: (i) a housing connected with a collection chamber for receiving debris, the housing having an opening for collecting the debris from the petroleum well, the opening in fluid communication with the collection chamber through the housing; (ii) a rotatable shaft with transport blades arranged within the housing and extending from the opening to the collection chamber, the rotatable shaft configured for transporting debris from the opening to the collection chamber in operational use; (iii) an annular area defined between the rotatable shaft and an inner wall of the housing and (iv) a valve configured for keeping debris in the collection chamber. The valve is located within the housing between the opening and the collection chamber. The valve comprises a seal member with a movable part mounted in the annular area and around the rotatable shaft.

Abstract: A downhole tractor having a hydraulic system for driving a plurality of hydraulic cylinders and a plurality of hydraulic motors. The system comprises: a hydraulic power pack; a first hydraulic supply line for supplying hydraulic fluid to the plurality of hydraulic cylinders; a second hydraulic supply line for supplying hydraulic fluid to plurality of hydraulic motors; a valve section comprising a respective part of first hydraulic supply line and a further respective part of second hydraulic supply line, valve section further comprising an inlet for receiving hydraulic fluid, and a set of valves, and a hydraulic bypass supply line coupled to hydraulic power pack for supplying hydraulic fluid directly to the inlet of valve section bypassing at least part of first hydraulic supply line and second hydraulic supply line. The first and the second hydraulic supply line each comprise two parts connected via respective part in the valve section.

Abstract: The invention relates to an overvoltage protection circuit, particularly in system where the load is remote from a regulated power supply and relates to an electric power supply system comprising such overvoltage protection circuit. The invention further relates to a downhole tractor comprising such overvoltage protection circuit, and to a tethered subsea vehicle comprising the overvoltage protection circuit.

Abstract: A receptacle is formed with a bottom end and a top end and houses an auger conveyor. The system includes at least one bottom sub comprising an inlet end and an outlet end. The outlet end is releasably connectable to a receptacle bottom end. At least one top assembly, comprising a house with an entrance releasably connectable to the receptacle top end and an outlet for connection to an outlet line, and a chamber within the house. The chamber forms a flow path between the entrance and the outlet. A retention tank is connected to the at least one top assembly outlet by the outlet line. A pump is connected to the retention tank on a pump suction side by a supply line, and the pump on the pressure side being connected to the at least one bottom sub by an inlet line.

Abstract: An expansion tool and method for expanding a tubing is disclosed. The expansion tool includes a rear portion, an opposite leading end and an expansion piston within the expansion tool. The expansion piston includes an expansion cone and radially movable expansion elements forming a circumferential expansion body. The rear portion is adapted for engaging a power source positioned at the rear portion. The expansion tool further includes a plurality of expansion arms surrounding the expansion piston. Each expansion arm is on an outer side provided with an expansion element, and a wedge portion between the expansion element and the expansion cone. The wedge portion abuts the expansion cone.

Abstract: The present invention relates to a joining member for an anastomosis system for realizing anastomosis between first and second hollow structures, such as end-to-side anastomosis. The joining member is annular and is adapted for joining the first and second hollow structures. The joining member includes a plurality of interconnected loops forming the annular body and a plurality of joining elements for joining the hollow structures connected to the annular body at locations where adjacent loops are interconnected to each other, and wherein the loops are configured to permit radial expansion of said annular body to expand said joining member from a first position to a second position having a second, larger diameter than the first position.

Abstract: A plug for plugging a line includes a seal, a first end assembly and a second end assembly. The first end assembly includes a gripping member. An actuator is configured to draw the first and second end assemblies together when there is a relative motion between the actuator and the first end assembly. The actuator is configured to actuate the gripping member. An initial part of a motion of the actuator actuates the gripping member to grip an inner surface of the line, thus inhibiting a motion of the first end assembly, and a subsequent part of the motion of the actuator, relative to the thus motion-inhibited first end assembly, draws the second end assembly toward the first end assembly so as to compress the seal such that the seal may seal against the inner surface of the line thus plugging the line.

Abstract: The present invention relates to an anastomosis system for realizing anastomosis between first and second hollow structures, such as end-to-side anastomosis, by way of a joining member and an applicator. The anastomosis system comprises an annular joining member adapted for joining the first and second hollow structures, a tubular member adapted to position the joining member at or proximate to a distal end of the second hollow structure and to be at least partially inserted into the second hollow structure, a support member adapted to hold the second hollow structure and a mechanism, for actuating the joining member when positioned at or proximate to the distal end of the second hollow structure, which joining member is actuated substantially radially relative to a longitudinal axis of the tubular member.

Abstract: An assembly, method and device are for performing a survey of tubing which is stuck in a borehole. The assembly has a tractor for advancing the assembly along the tubing on an inside thereof; at least one engager connected to the tractor, the engager being configured to couple the assembly to a wall of the tubing, such that a stimulus applied to the tubing, e.g. components of force or manipulation of the tubing, can be communicated to produce a response in a part of the assembly. A detector may detect the response when the assembly is coupled to the wall of the tubing, in order to produce data based on the response for determining a location at which the tubing may, or may not, be subjected to at least one operation for freeing the string or a portion thereof.

Abstract: Apparatus for gaining access to a well via a lateral access passage comprises a flexible conduit which is to be inserted into the well via the lateral access passage so as to deviate from a direction of lateral insertion to a generally downward direction down the well, the flexible conduit comprising a probe at a front end thereof, the probe comprising a spring at least 0.5 m in length. The apparatus comprises a probe container for accommodating the probe before it is inserted into the well and whilst the probe is exposed to well pressure in the probe container, the probe container accommodating the probe with at least part of the probe extending along a curved path.

Abstract: A tool for gaining lateral access to a well includes a head portion configured to advance axially forwardly relative to a lateral access passage. The tool includes a first shaft and a shaft assembly including a second shaft. The second shaft is at least partly received in the first shaft so as to be axially forwardly moveable therewith. In use, axial forward movement of the first and second shafts causes forward advancement of the head portion. The second shaft is axially forwardly moveable relative to the first shaft. The first shaft includes an internal thread and the shaft assembly includes an external thread engaging the internal thread of the first shaft so that relative rotation of the internal and external threads causes the axial forward movement of the second shaft relative to the first shaft without rotation of the second shaft relative to the first shaft.

Abstract: A plug (1, 301) for plugging a line (101), the plug comprising: a seal (2); a first end assembly (10, 310) located at a first end (4) of the seal (2) and a second end assembly (40) located at an opposite second end (5) of the seal (2), the first end assembly (10, 310) comprising at least one gripping member (16, 17, 316, 317) that is configured to grip an inner surface of the line (101); and an actuator (50) configured to draw the first (10, 310) and second end (40) assemblies together when there is a relative motion between the actuator (50) and the first end assembly (10, 310), characterised in that: the actuator (50) is configured to actuate the gripping member (16, 17, 316, 317), and the plug (1, 301) is arranged such that: an initial part of a motion of the actuator 50 actuates the gripping member (16, 17, 316, 317) to grip the inner surface of the line (101), thus inhibiting motion of the first end assembly (10, 310), and a subsequent part of the motion of the actuator (50), relative to the thus motion-

Abstract: The present invention relates to an anastomosis system for realizing anastomosis between first and second hollow structures, such as end-to-side anastomosis, by way of a joining member and an applicator. The anastomosis system comprises an annular joining member adapted for joining the first and second hollow structures, a tubular member adapted to position the joining member at or proximate to a distal end of the second hollow structure and to be at least partially inserted into the second hollow structure, a support member adapted to hold the second hollow structure and a mechanism, for actuating the joining member when positioned at or proximate to the distal end of the second hollow structure, which joining member is actuated substantially radially relative to a longitudinal axis of the tubular member.

Abstract: A method for performing a coronary artery bypass graft procedure on a patient to connect a bypass vessel to a target vessel includes the steps of creating an opening in the patient that communicates with the thoracic cavity of the patient; providing a bypass vessel having a lumen and at least one free end; passing the free end of the bypass vessel from the thoracic cavity through the opening to a position outside the body of the patient; attaching a connector to the free end of bypass vessel while the free end of the bypass vessel is outside the body of the patient; passing the free end of the bypass vessel from the position outside the body of the patient through the opening and into the thoracic cavity; and connecting the free end of the bypass vessel to a target vessel with the connector.

Abstract: A power supply device includes a capacitance partition, a control partition, a power switching partition, a thermal conduction partition, and a magnetic partition. The thermal conduction partition includes electrical connections to connect other partitions. The thermal conduction partition provides for magnetic shielding of the magnetic partition and thermal dissipation in a substantially orthogonal direction to the electrical connections. The layering arrangement allows automated production and/or testing.

Abstract: A lighting system is disclosed comprising an excitor which drives at least one reactor. The excitor is an electrical waveform generator that creates an AC waveform at a frequency between about 50 kHz and about 100 MHz. The reactor is an under-damped resonant circuit that includes a network of lighting elements. Reactive components are distributed among the lighting elements. These reactive components can regulate the current and voltage to individual lighting elements. The drive system is particularly useful for arrays of low-voltage lighting elements such as LEDs. It is fault tolerant in that the failure of individual elements need not affect the operation of remaining elements, and elements can be added and removed without affecting the serviceability of other elements.

Abstract: A reel assembly for supplying a continuous composite tubing of a type used in oilfield operations, which reel assembly comprises a stand onto which a spool of continuous composite tubing is lowered and a drive coupling for transmitting rotational force from the stand to the spool. A removable cage is connected with the stand. The continuous composite tubing is arranged around the outer periphery of the spool, in a U-formed housing.

Abstract: A full-body harness, with or without an integral support line, with the harness being adaptable for class I, class II, and/or class III service, and for use by safety personnel (such as firefighters, military personnel, rescue workers etc.) or others for situations that call for emergency activity in areas where falls from an unsafe height are possible, or for use for entertainment purposes such as climbing, rappelling, or skydiving, for example.

Abstract: A system for making anastomoses between hollow structures by mechanical means is provided with a device in the shape of an annular or tubular element comprising circumferentially provided means, such as pin-shaped elements, for joining the abutting walls of the hollow structures together. An applicator is intended for moving said annular or tubular element in position and activating the joining means thereof, so as to make the anastomosis. Possibly, intraluminal joining means can be inserted without using an annular or tubular element.