Abstract: A fastening means is for attaching a cable to a tubular body. The tubular body has a sleeve with a first end face and a second end face. The fastening means has a first attachment part arranged with a first abutment surface for resting against the first end face; a second attachment part arranged with a second abutment surface for resting against the second end face; both the first attachment part and the second attachment part including a through cable recess; and a tightening device for pulling the first attachment part and the second attachment part towards each other. The fastening means is characterized by the first attachment part and the second attachment part being adjustably connected in a spaced-apart manner via the tightening device.

Abstract: A fastening means is for attaching a cable to a tubular body. The tubular body has a sleeve with a first end face and a second end face. The fastening means has a first attachment part arranged with a first abutment surface for resting against the first end face; a second attachment part arranged with a second abutment surface for resting against the second end face; both the first attachment part and the second attachment part including a through cable recess; and a tightening device for pulling the first attachment part and the second attachment part towards each other. The fastening means is characterized by the first attachment part and the second attachment part being adjustably connected in a spaced-apart manner via the tightening device.

Abstract: An apparatus and a method are for fastening a cable to a tubular body. The tubular body has a sleeve which is provided with internal bevels at its end portions. The apparatus includes a clamp which is arranged to rest against the sleeve and which has at least one through cable recess. The clamp is formed, at each of its end portions, with a first hook and a second hook, respectively. The hooks complementarily fit the bevels of the sleeve, and the clamp is provided with tensioning means for the hooks.

Abstract: A pressure-sensing device is for use in an underground well. The pressure-sensing device includes a pressure sensor arranged at least to sense whether a pressure in the well is below or above a given limit value, and a signal generator arranged to generate an acoustic signal in a well body in the well in response to a sensed pressure from the pressure sensor exceeding said limit value. A method is for measuring pressure in an underground well. A use of a pressure-sensing device is to monitor the pressure between two spaced-apart barrier elements in an underground well.

Abstract: A pressure-sensing device is for use in an underground well. The pressure-sensing device includes a pressure sensor arranged at least to sense whether a pressure in the well is below or above a given limit value, and a signal generator arranged to generate an acoustic signal in a well body in the well in response to a sensed pressure from the pressure sensor exceeding said limit value. A method is for measuring pressure in an underground well. A use of a pressure-sensing device is to monitor the pressure between two spaced-apart barrier elements in an underground well.

Abstract: A cleaning magnet device (1a-1c) for cleaning drilling fluid, the cleaning magnet (1a-1c) being disposed in a liquid flow, and the cleaning magnet (1a-1c) being provided with a removable material (6) which is arranged to prevent magnetic bodies from accumulating directly on the cleaning magnet (1a-1c).

Abstract: A cleaning magnet device (1a-1c) for cleaning drilling fluid, the cleaning magnet (1a-1c) being disposed in a liquid flow, and the cleaning magnet (1a-1c) being provided with a removable material (6) which is arranged to prevent magnetic bodies from accumulating directly on the cleaning magnet (1a-1c).