Monitoring Acid-Stimulation Treatments With Slickline Distributed-Temperature Sensing

摘要

Mechanical-diversion techniques can ensure acid injection into the various intervals of naturally fractured reservoirs. With these methods, surface pressure can be monitored to assess fluid-placement effectiveness for each zone treated, but uncertainty of the friction pressure in the pipe while pumping can result in an incorrect interpretation of fluid entry. A new technique using fiber-optic distributed-temperature-sensing (DTS) measurements offers a solution when bullheading by providing an indication of where the acid has been injected into the fractured reservoir.