Abstract: A drilling module is for radial drilling in a well and an anchoring module is for use in a well tool. The drilling module has a piston for receiving a drill for the radial drilling, and for displacing the drill in a radial direction towards a wall of the well and a cylinder for receiving and guiding the piston. Both the piston and the cylinder are guide-free and of a non-circular shape, at least in a portion, to prevent relative rotation between them. The anchoring module has an extent in the axial direction of the well. The anchoring module includes a displacement device arranged to push against a portion of the wall of the well to press the anchoring module against an opposite portion of the wall of the well. The displacement device is oblong in the axial direction of the anchoring module.

Abstract: A drilling module is for radial drilling in a well and an anchoring module is for use in a well tool. The drilling module has a piston for receiving a drill for the radial drilling, and for displacing the drill in a radial direction towards a wall of the well and a cylinder for receiving and guiding the piston. Both the piston and the cylinder are guide-free and of a non-circular shape, at least in a portion, to prevent relative rotation between them. The anchoring module has an extent in the axial direction of the well. The anchoring module includes a displacement device arranged to push against a portion of the wall of the well to press the anchoring module against an opposite portion of the wall of the well. The displacement device is oblong in the axial direction of the anchoring module.

Abstract: A method and system are for establishing and operating a riser less coiled tubing intervention arrangement from a surface vessel, the vessel having a deck and a coiled tubing reel holding a coiled tubing, and where a subsea injector is connectable to a head of a subsea borehole. The method includes: arranging; the coiled tubing in a surface injector and the subsea injector, attaching, the surface injector to a lifting tackle of the vessel; after connecting a tool string to the coiled tubing, lowering the coiled tubing tool string and the subsea injector through the sea to the head by running the surface injector while paying out coiled tubing from the coiled tubing reel; and inserting, the tool string in the head and connecting the subsea injector to the head.

Abstract: A method and system are for establishing and operating a riser less coiled tubing intervention arrangement from a surface vessel, the vessel having a deck and a coiled tubing reel holding a coiled tubing, and where a subsea injector is connectable to a head of a subsea borehole. The method includes: arranging; the coiled tubing in a surface injector and the subsea injector, attaching, the surface injector to a lifting tackle of the vessel; after connecting a tool string to the coiled tubing, lowering the coiled tubing tool string and the subsea injector through the sea to the head by running the surface injector while paying out coiled tubing from the coiled tubing reel; and inserting, the tool string in the head and connecting the subsea injector to the head.