Method and System for Hydraulic Fracture Diagnosis with the use of a Coiled Tubing Dual Isolation Service Tool

摘要

A hydraulic fracture diagnostic system for reservoir evaluation of a high angle wellbore includes a coiled tubing string that extends from the surface to a location within a wellbore. The system includes a sensor and a pump connected to the coiled tubing string. A tool having at least two packing elements and a port positioned between the packing elements is connected to the coiled tubing string. The coiled tubing string positions the tool adjacent a fracture. The packing elements isolate the fracture and the port is configured to provide communication with the isolated portion of the wellbore. A diagnostic method includes pumping a volume of fluid from the isolated portion of a wellbore using a coiled tubing string and monitoring the pressure within the coiled tubing string. Pressure within the coiled tubing string may also be monitored after injection of fluid into the isolated wellbore through the coiled tubing string.

主权项

1. A hydraulic fracture diagnostic system for well reservoir evaluation of a high angle wellbore comprising:
a coiled tubing string extending from a surface location to a downhole location within a wellbore; at least one sensor connected to a portion of the coiled tubing string; at least one pump connected to the coiled tubing string; and a downhole tool connected to the coiled tubing string being positioned adjacent a hydraulic fracture in a formation traversed by the wellbore, the downhole tool comprising:
a first packing element;a second packing element, wherein the first packing element and second packing element may be actuated to isolate the hydraulic fracture; anda port positioned between the first packing element and the second packing element, the port configured to provide communication to an exterior of the downhole tool with an interior of the coiled tubing string.