Abstract: The present invention relates to a process for the treatment of the area (10) surrounding a well (1) in which an aqueous gelling solution comprising an alkaline potassium silicate solution and an acetic acid is prepared and then injected into a subterranean formation. This aqueous gelling solution makes it possible, by virtue of these gelling properties, to block the area (10) surrounding the well (1).

Abstract: The present invention relates to a process for the treatment of the area (10) surrounding a well (1) in which an aqueous gelling solution comprising an alkaline potassium silicate solution and an acetic acid is prepared and then injected into a subterranean formation. This aqueous gelling solution makes it possible, by virtue of these gelling properties, to block the area (10) surrounding the well (1).

Abstract: A linking device intended notably for the connection of rods made of a composite material based on polymerizable resin and reinforcing fibers includes a tubular sleeve tightly connected to one end of a rod by plastic deformation of the sleeve placed around said end. The device is formed by a process for fastening linking means on elongated elements made of a composite material.

Abstract: The invention relates to an assembly for providing at least one electric connection between the elements of a pipe each including an electric line, which assembly includes for each pipe element:a conductor placed inside the element,a first connector and second connectors fixed to each of the ends of the conductor and cooperating electrically with said conductor,a first double connector cooperating electrically by a first end with the first connector,a second double connector cooperating electrically by a first end with the second connector, said first and second double connectors cooperating electrically with respectively the second and first double connectors of the adjacent pipe elements, andmeans for positioning and fixing the connectors.