An injection apparatus for injecting an activated fluid into a well-bore and related injection method

摘要

An injection apparatus for injecting an activated fluid into a well-bore comprises a reservoir 3, 103, 203, 303 containing an activation fluid AF.;The injection apparatus further comprises:a valve arrangement 2, 102, 202, 302 adapted to be coupled to a pipe 6, 106, CS1, CS3 for receiving a first fluid F1 flow,a dosing and mixing arrangement 4, 104, 204, 304 coupled to the reservoir 3, 103, 203, 303 and to the valve arrangement 2, 102, 202, 302.;The valve arrangement has a rest configuration in which the injection apparatus provides a non-activated fluid mixture F1" and an activated configuration in which the injection apparatus provides an activated fluid mixture F2.;The dosing and mixing arrangement comprises an engine part 31, 131, 231, 331 mechanically coupled to a pumping part 32, 132, 232, 332. The engine part runs the pumping part and the pumping part sucks the activation fluid AF of the reservoir when the valve arrangement is in the activated configuration. The dosing and mixing arrangement mixes the activation fluid AF with the first fluid and provides an activated fluid mixture flow F2 at an outlet 8, 108", 208, 308.