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-borecomprises 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 firstfluid F1 flow, a dosing and mixing arrangement (4, 104, 204, 304) coupled tothe reservoir (3, 103, 203, 303) and to the valve arrangement (2, 102, 202,302). The valve arrangement has a rest configuration in which the injectionapparatus provides a non-activated fluid mixture F1" and an activatedconfiguration in which the injection apparatus provides an activated fluidmixture F2. The dosing and mixing arrangement comprises an engine part (31,131, 231, 331) mechanically coupled to a pumping part (32, 132, 232, 332). Theengine part runs the pumping part and the pumping part sucks the activationfluid AF of the reservoir when the valve arrangement is in the activatedconfiguration. The dosing and mixing arrangement mixes the activation fluid AFwith the first fluid and provides an activated fluid mixture flow F2 at anoutlet (8, 108", 208, 308).