Well treating system with pressure readout at surface

摘要

A well treating system where downhole variables such as pressure and temperature are made available at the surface in real time, comprises: a) a tubular body adapted to be lowered into the well on a running string, b) inflatable packer on the body for isolating a zone of the well, c) valve operatively associated with the body for allowing packer inflation, fluid circulation, fluid injection and packer deflation, d) a number of transducers in the body for sensing the variables and providing representative signals, e) transmission means connected to each of the transducers and including switching means for sampling the output of each of the transducers, f) electrical conductor cable extending through the running string from the surface to the telemetry means, g) means connected to the cable at the surface for processing the signals and providing a real time display of each of the variables. Also claimed is, method of treating a well zone, comprises: a) positioning an electrical conductor throughout the length of the coiled tubing, b) placing the coiled tubing on the reel of a coiled tubing unit, c) bringing the conductor to the outside of the inner end of the coiled tubing where the conductor can be hooked up to a read-out device, d) connecting the outer end of the coiled tubing to a tool string that can be operated downhole to isolate the zone to be treated, e) electrically connecting the outer end of the conductor to transducer means for making the measurement, f) lowering the tool string into the well on the coiled tubing and operating the tool string to isolate the well zone, performing a treating operation in the well zone, g) making a measurement with the transducer means in connection with the treating operation, h) obtaining a surface read out of the measurement via a conductor.