Abstract: A method, drill string, bottomhole assembly, drill bit, and insert are for extending a borehole for a relief well in a subsurface. The rotary drill string is provided in the borehole and includes a bottomhole assembly. The bottomhole assembly includes a drill bit. Current is provided into the subsurface using at least one electrode on the drill string, thereby generating current in a casing of a mother well located a distance away from the borehole of the relief well. At least one component of a magnetic field associated with the current generated in the casing is detected using at least one sensor disposed on the drill string. Data is obtained from the sensor for determining either or both the proximity and direction to the mother well. The drill string is advanced into the subsurface based upon the obtained data to extend the borehole.

Abstract: A method, drill string, bottomhole assembly, drill bit, and insert are for extending a borehole for a relief well in a subsurface. The rotary drill string is provided in the borehole and includes a bottomhole assembly. The bottomhole assembly includes a drill bit. Current is provided into the subsurface using at least one electrode on the drill string, thereby generating current in a casing of a mother well located a distance away from the borehole of the relief well. At least one component of a magnetic field associated with the current generated in the casing is detected using at least one sensor disposed on the drill string. Data is obtained from the sensor for determining either or both the proximity and direction to the mother well. The drill string is advanced into the subsurface based upon the obtained data to extend the borehole.

Abstract: The present invention provides a method of determining a physiochemical property of a drilling fluid at a drilling site during a drilling phase, said method comprising detecting a nuclear magnetic resonance signal from out-of-hole drilling fluid at said site and calculating therefrom a value indicative of said property.

Abstract: The invention is a method for mooring a marine vessel (P) using three or more anchor lines (11a, 11b, . . . ) comprising—laying out each anchor line (11) with an anchor in a desired position relative to the platform, with a seabed anchor chain (10) extending towards the desired position of the platform (P), with the seabed chain (10) connected to a fiber rope's (20) arranged for being extended through the sea and connected to an anchor winch chain (30) and being tightended by an anchor winch (31) on the vessel (P), wherein the fiber rope (20) is prepared by being packed to a bundle or coil (21) arranged in a protective container (24) on the seafloor, and arranged for being released and pulled out of the container (24) at a predetermined pulling force, and arranged for being picked up and connected to the anchor winch chain (30).

Abstract: A method of well construction or treatment comprising the introduction of a settable cement that contains pulverulent aplite down a borehole is provided, together with a cement composition comprising at least 30% by weight of cement pulverulent aplite on a dry solid basis.

Abstract: The invention is a method for mooring a marine vessel (P) using three or more anchor lines (11a, 11b, . . . ) comprising—laying out each anchor line (11) with an anchor in a desired position relative to the platform, with a seabed anchor chain (10) extending towards the desired position of the platform (P), with the seabed chain (10) connected to a fibre rope's (20) arranged for being extended through the sea and connected to an anchor winch chain (30) and being tightened by an anchor winch (31) on the vessel (P), wherein the fibre rope (20) is prepared by being packed to a bundle or coil (21) arranged in a protective container (24) on the seafloor, and arranged for being released and pulled out of the container (24) at a predetermined pulling force, and arranged for being picked up and connected to the anchor winch chain (30).

Abstract: The present invention provides a method of determining a physiochemical property of a drilling fluid at a drilling site during a drilling phase, said method comprising detecting a nuclear magnetic resonance signal from out-of-hole drilling fluid at said site and calculating therefrom a value indicative of said property.

Abstract: This invention provides a method of securing to a substrate a metal object having an uncoated surface, which method comprises contacting said substrate and said surface with an unset hydraulic cement composition and allowing said composition to set, characterized in that said surface is an aluminum surface and in that said composition comprises pulverulent aplite.

Abstract: The invention provides a method for cementing in a lining tube in a bore hole, said method comprising placing said lining tube at a distal end of said bore hole, introducing a liquid hydraulic cement containing a setting retarder into said distal end of said bore hole, and applying a fluctuating electromagnetic or magnetic field from within said lining tube whereby to heat cement outside said lining tube directly or via a electromagnetic radiation transmitter positioned on the outside of said lining tube.

Abstract: The invention provides a method of well construction or treatment which comprises introducing a setable cement composition down a borehole, characterized in that said composition contains pulverulent aplite. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Abstract: A construction element for protection of tunnels against fire, comprising two layers (12, 13) with different materials and material qualities, wherein one and outwardly oriented carrier layer (13) has a particularly high strength, while the other and inwardly oriented exposure layer (12) has a material composition adapted to meet particular application-specific conditions, such as high heat. The carrier layer (13) contains aplite as the main cementing agent, and a mat-shaped reinforcement material (14) is embedded in the area between the carrier layer (13) and the exposure layer (12).