Abstract:
Stabilization manipulator (2) for cooperation in manipulating and moving drilling elements (P) in a drilling rig (1). The stabilization manipulator (2) comprising: a linear guide (3) adapted to be fixed to a drill floor (13) comprised in the drilling rig (1); a carriage (4), comprising a base (40) and sliding blocks (41), adapted to slide along said linear guide to move at least between a position close to a well (M, H) and a position distant from said well (M, H); a first arm (51), a first end of which is constrained to said base (40) of the carriage (4), so that it can rotate about a horizontal axis; and a second arm (52), a first end of which is constrained to said base (40) of the carriage (4), so that it can rotate about a horizontal axis. The second arm (52) is separate from and independent of said first arm (51). A roller (512) being constrained to the second end of said first arm (51), which is adapted to rotate about an axis substantially perpendicular to the extension of said first arm (51), changing position relative to said first arm (51). A roller (522) being constrained to the second end of said second arm (52), which is adapted to rotate about an axis substantially perpendicular to the extension of said second arm (52), changing position relative to said second arm (52). The carriage (4) comprising a rotation system (42) adapted to cause said base (40) to rotate about a vertical axis.
Abstract:
A system including a stabbing guide (100) with a plurality of guide elements (110a-110d), an engaging element (123), and a linkage assembly (103) that couples the plurality of guide elements to the engaging element, where rotation of the engaging element (123) relative to the plurality of guide elements drives the linkage assembly and, via the linkage assembly, moves the guide elements radially relative to a center axis of the stabbing guide.
Abstract:
A system and a method for stabilizing a drilling pipe and/or production riser (3) extending between a wellhead coupling (311) of a subsea well (1) and a well valve assembly (22) on a surface installation (2) which is floating in a water mass (4) or is supported on a seabed (51) and projects up above the water mass (4), wherein the wellhead coupling (311) forms a fluid-tight connection of a high-pressure barrier (12) of the well (1) and the drilling pipe and/or production riser (3), and wherein the drilling pipe and/or production riser (3) is subjected to a horizontal load component (Lh) that generates a bending moment (Mw) around the wellhead coupling (311), the system being c h a r a c t e r i z e d i n that it comprises: - a foundation (14) to be positioned on the seabed (51); and - a supporting structure (32) arranged to be connected to a lower portion (31) of the drilling pipe and/or production riser (3), the supporting structure (32) projecting outwards from the drilling pipe and/or production riser (3) and cooperating with the foundation (14) to absorb a portion of the bending moment (Mw) around the wellhead coupling (311).
Abstract:
Systems and methods for managing equipment in a workspace such as an oil rig are disclosed. Objects are given zones which are physically larger than the objects. A monitoring system is capable of monitoring the objects and the zones for each object. When zones intersect, a collision is possible and the monitoring system can take action to prevent the collision or mitigate damage in the case of a collision. Further, systems and methods for ensuring the moving components are handed-off properly from one support to another are disclosed.
Abstract:
A plug assembly includes an expandable assembly and a locking ring. The expandable assembly is adapted to be deformed radially over the locking ring. The plug assembly is used with an untethered object, which is adapted to contact an inside surface of the plug assembly and, using well fluid pressure, to apply forces to the plug assembly. The forces cause further radial deformation of the expandable assembly, and penetration of an internal surface of the tubing string at least at one point with a gripping portion of the expandable assembly.
Abstract:
The invention provides a centralizer for use with downhole operations. The centralizer is formed of a hollow, cylindrical body having an exposed outer surface and formed of a non-metallic material, a plurality of non-metallic blades protruding from the outer surface of the cylindrical body, and a plurality of wear buttons positioned on each of the plurality of blades, each of the wear buttons having a surface designed to reduce grabbing or sticking and wear of the hollow cylindrical body, such as a smooth, oval surface.
Abstract:
New apparatus and methods are provided for positioning and attaching centralizers to the inside sidewalls of a wellbore. One or more centralizers are maintained in the interior of a pipe that is transported downhole into a well for deployment. Preferrably, the pipe is also the wellbore 's casing and the centralizers are deposited in a top-down manner as the casing travels downhole. The centralizers of the present invention are constructed to have an at least partially circular structure with a central hole. The preferred centralizer has an expanding circular structure wherein the diameter of the centralizer is substantially uniform so as to form an annular construction. Once deployed, the annular centralizer expands to engage the wellbore sidewall with the central hole expanded for passage of the well casing.
Abstract:
A constant force device has at least a first non-constant axial force driving the first set of arms and a second non-constant axial force driving the second set of arms, where the two sets of arms are offset from one another by 900. Each of the non-constant axial forces is converted to a radially extending force by the interaction of a force guide and actuator. The force guide is attached to the inner mandrel of the constant force device and is shaped to produce an essentially constant radially extending force through the entire range of motion of the arms. Typically each arm of the pair of arms has a pivoting arm and a telescoping arm where the joint between the pivoting arm and telescoping arm has one or more wheels to reduce friction as the constant force device moves through the tubular.
Abstract:
A connection assembly for engaging a tubular member (1) underwater to restrain the tubular member (1) from radial movement relative to the connection assembly comprises a plurality of pads (5) for engaging the tubular member at circumferentially spaced positions; and a plurality of biasing arrangements (6, 7, 8), each for biasing a respective pad (5) radially inwardly into engagement with the tubular member (1); wherein each biasing arrangement (6, 7, 8) comprises a pre-loadable, mechanical, compressed spring arrangement (7) for resiliently pressing its respective pad (5) against the tubular member (1). The assembly need not employ any hydraulic components.
Abstract:
Arrangement for reducing friction of a drill pipe seal comprising a disc shaped base plate (1) provided with a central passage (2) for the drill pipe. A plurality of rollers (3) is positioned on said base plate. Said rollers (3) are longitudinally crossed by corresponding shafts (4) having a pivot (5) at one end and a bracket at the other. A regulator (7) of the force exerted by roller on the drill pipe is mounted on said bracket end. A regulator of the force exerted by the roller (3) on the drill pipe is mounted on said bracket. The regulator (7) modifies the pressure exerted on a spring (8) located between two stops (9). Simultaneously the regulator modifies the angular position of the respective roller (3) displacing it over the fixed point comprised by the pivot (5).