Abstract: The invention provides a downhole borehole traction apparatus (10) and method of use. The apparatus comprises a body comprising a borehole engaging section wherein the borehole engaging section comprises an outer surface comprising at least one thread. The at least one thread comprises a crest surface (32), a leading surface (30), and a trailing surface (28) having a curvilinear shape. The at least one thread has a low pressure generation means comprising one or more formations.

Abstract: A drill stem element for drilling a well with flow of a drilling fluid around the element and in a direction extending from a drilling well bottom towards the surface, including a member and a coupling mounted for rotation about the member. The coupling includes at least two abutment zones on a wall of the well during drilling, each abutment zone externally includes at least one abutment portion having an outer diameter greater than a diameter of other portions of the element, each abutment zone having a convex rounded shape generated by revolution, each abutment zone being axially remote from at least one other abutment zone. The coupling further includes an intermediate zone between the two abutment zones, an opening being provided between the coupling and the member for the flow of drilling fluid between the coupling and the member forming a fluid bearing.

Abstract: A stabilizer device (20, 120, 220) for a drill stem, in particular for a bottom hole assembly, which is rotatable about a longitudinal axis (X), the device comprising a tubular central body (21) and connection means (22, 23) at its axial ends for connecting to elements of the stem, the device being provided with a helical protrusion (24, 25, 26) on the surface of the body intended to come into contact with a wall of the drilled hole, said helical protrusion turning in the clockwise direction (W) about the axis of the central body viewed from an upstream axial end in the direction of a downstream axial end, characterized in that a crest (33, 33?, 33?) of the helical protrusion comprises a leading edge (35, 35? and 35?) and a trailing edge (36, 36? and 36?) defined in the direction of rotation, the leading edge comprising a convex portion such that a first portion (38) of said convex portion has a radius of curvature of more than 3.5 mm over an angular arc of at least 20°.

Abstract: A drillpipe for a drill stem to drill a hole. The drill stem includes a drill string and a bottom hole assembly. The drillpipe includes a first end having a first inertia, a second end having a second inertia, a first intermediate zone adjacent to the first end, a second intermediate zone adjacent to the second end, and a central substantially tubular zone with an external diameter smaller than the maximum external diameter of at least the first or the second end. A casing is fixed on the pipe over a portion of the external surface thereof, at least one physical parameter sensor is disposed in the casing, and at least one data transmission/storage mechanism is connected to the sensor output, the casing being disposed at a distance from the first and second ends, the casing being integral with the central zone at a distance from the first and second intermediate zones and having a smaller inertia than the first and second inertias.

Abstract: A drill string element including an elongate tubular body delimiting an interior surface longitudinally including at least one portion of revolution and including a first hole provided in the elongate tubular body. That first hole includes a first end opening at the portion of revolution, and in a vicinity of the first end a longitudinal axis intersecting the interior surface at an intersection location. The longitudinal axis, in projection into a first plane passing through the central axis of the portion of revolution and containing the intersection location, forms a first angle of a value that is not zero and in projection into a second plane tangential to the interior surface at the intersection location forms a second angle of a value that is not zero.

Abstract: A drill stem element for drilling a well with flow of a drilling fluid around the element and in a direction extending from a drilling well bottom towards the surface, including a member and a coupling mounted for rotation about the member. The coupling includes at least two abutment zones on a wall of the well during drilling, each abutment zone externally includes at least one abutment portion having an outer diameter greater than a diameter of other portions of the element, each abutment zone having a convex rounded shape generated by revolution, each abutment zone being axially remote from at least one other abutment zone. The coupling further includes an intermediate zone between the two abutment zones, an opening being provided between the coupling and the member for the flow of drilling fluid between the coupling and the member forming a fluid bearing.

Abstract: An element for a drill string includes at least one zone bearing on a wall of the drilled hole, the bearing zone including at least one bearing section with an external diameter greater than the diameter of the other portions of the element, and two activation zones substantially adjacent to the bearing zone and disposed upstream and downstream of the bearing zone. The activation zones include a plurality of grooves with a generally helical shape about the axis of the element. The bearing zone includes two guide sections in a shape of a convex rounded body of revolution, disposed upstream and downstream of the bearing section in a manner adjacent to the bearing section, and tangential to the bearing section and to the activation zones.

Abstract: Systems and methods are provided to facilitate corporate entity management. According to some embodiments, a user interface is provided including an entity selection area allowing selection of at least one corporate entity from a plurality of corporate entities, and a plurality of selectable elements, each of the selectable elements being selectable to cause presentation of an associated area, wherein an area associated with each of the plurality of selectable elements presents information relating to the at least one corporate entity and to the associated selectable element.

Abstract: A drillpipe for a drill stem to drill a hole. The drill stem includes a drill string and a bottom hole assembly. The drillpipe includes a first end having a first inertia, a second end having a second inertia, a first intermediate zone adjacent to the first end, a second intermediate zone adjacent to the second end, and a central substantially tubular zone with an external diameter smaller than the maximum external diameter of at least the first or the second end. A casing is fixed on the pipe over a portion of the external surface thereof, at least one physical parameter sensor is disposed in the casing, and at least one data transmission/storage mechanism is connected to the sensor output, the casing being disposed at a distance from the first and second ends, the casing being integral with the central zone at a distance from the first and second intermediate zones and having a smaller inertia than the first and second inertias.

Abstract: Systems and methods are provided to facilitate corporate entity management. According to some embodiments, a user interface is provided including an entity selection area allowing selection of at least one corporate entity from a plurality of corporate entities, and a plurality of selectable elements, each of the selectable elements being selectable to cause presentation of an associated area, wherein an area associated with each of the plurality of selectable elements presents information relating to the at least one corporate entity and to the associated selectable element.

Abstract: A drill string element including an elongate tubular body delimiting an interior surface longitudinally including at least one portion of revolution and including a first hole provided in the elongate tubular body. That first hole includes a first end opening at the portion of revolution, and in a vicinity of the first end a longitudinal axis intersecting the interior surface at an intersection location. The longitudinal axis, in projection into a first plane passing through the central axis of the portion of revolution and containing the intersection location, forms a first angle of a value that is not zero and in projection into a second plane tangential to the interior surface at the intersection location forms a second angle of a value that is not zero.

Abstract: An element for a drill string includes at least one zone bearing on a wall of the drilled hole, the bearing zone including at least one bearing section with an external diameter greater than the diameter of the other portions of the element, and two activation zones substantially adjacent to the bearing zone and disposed upstream and downstream of the bearing zone. The activation zones include a plurality of grooves with a generally helical shape about the axis of the element. The bearing zone includes two guide sections in a shape of a convex rounded body of revolution, disposed upstream and downstream of the bearing section in a manner adjacent to the bearing section, and tangential to the bearing section and to the activation zones.

Abstract: The drill string element has at least one bearing zone for bearing against the wall of the borehole during drilling. The bearing zone comprises at least one bearing segment extending in the axial direction and having an outside surface that is cylindrical and of constant diameter greater than the diameter of any other portion of the surface of the element, and also having a guide zone that is circularly symmetrical about the axis of the drill string element. The bearing zone preferably also has a drilling fluid activation zone extending axially in a disposition adjacent to the bearing segment. The guide zone presents a radius of curvature not less than one-third the outside diameter of the bearing segment.

Abstract: The drill string element has at least one bearing zone for bearing against the wall of the borehole during drilling. The bearing zone comprises at least one bearing segment extending in the axial direction and having an outside surface that is cylindrical and of constant diameter greater than the diameter of any other portion of the surface of the element, and also having a guide zone that is circularly symmetrical about the axis of the drill string element. The bearing zone preferably also has a drilling fluid activation zone extending axially in a disposition adjacent to the bearing segment. The guide zone presents a radius of curvature not less than one-third the outside diameter of the bearing segment.

Abstract: Systems and methods are provided to facilitate corporate entity management. According to some embodiments, a user interface is provided including an entity selection area allowing selection of at least one corporate entity from a plurality of corporate entities, and a plurality of selectable elements, each of the selectable elements being selectable to cause presentation of an associated area, wherein an area associated with each of the plurality of selectable elements presents information relating to the at least one corporate entity and to the associated selectable element.

Abstract: The present invention relates to a device for actuating equipment from a distance through a flow variation of a fluid in a pipe. The device and method of this invention are suited for incorporation into a drill string.

Abstract: A device for remotely actuating a piece of equipment by varying the flow conditions of a fluid, possibly incompressible, an comprising an actuating piston, a nozzle-needle assembly. One of the nozzle or the needle is mounted for sliding movement into the piston. An arrangement is provided for returning the slidably mounted nozzle or needle to a predetermined position relatively to the piston.

Abstract: A device for remotely operating equipment through a variation in the flow of a fluid includes a coupling unit connecting the device and the equipment to be operated, an assembly of two elements cooperating with one another to control an opening value of a channel through which the fluid flows and a control assembly for adjusting the opening value in order to have it take on one or the other of two particular values.

Abstract: The adjusting device consists of at least one drill string element (40) integral in rotation with the drill string and fastened to the drill string in the vicinity of the drill bit. Element (40) comprises parts (41, 43, 46) whose outer bearing surfaces are arranged in a cylindric surface with substantially the axis (48) of the drill string as the axis and substantially the nominal diameter of hole (4) as the diameter, distributed around the axis so as to generate, during part of the rotation of the drill string, by reaction of the well of hole (4) on element (40) , forces tipping the drill bit out of the drilling plane. Bearing parts (45, 46) may consist partly of variable-diameter mobile blades.

Abstract: A fitting for controlled trajectory drilling. This fitting comprises a downhole motor, a drilling tool, and a variable geometry stabilizer.