SWELLABLE TECHNOLOGY FOR DOWNHOLE FLUIDS DETECTION

摘要

A method of detecting the presence of a downhole fluid at a particular location in a wellbore including pumping an activating fluid into a wellbore; contacting a flow controlling device in a pipe string casing with the activating fluid, the flow controlling device comprising at least one swellable element; activating the at least one swellable element in the flow controlling device; blocking fluids or controlling the flow of fluids entering or leaving the casing with the activated flow controlling device; allowing the pressure to change; and detecting the pressure change. An apparatus includes a pipe string in a wellbore and a flow controlling device in the pipe string casing, wherein the flow controlling device includes at least one swellable element, wherein upon activation, the at least one swellable element swells and fully or partially seals off the flow area of the flow controlling device.