Pressure Testing of Fractured Rocks - A Methodology Employing Three-Dimensional Cross-Hole Tests.

摘要

A comprehensive methodology of hydraulic testing in fractured rocks is presented. The methodology utilizes geological and geophysical information as background. It consists of conventional single-hole packer tests in conjunction with a newly developed cross-hole packer-testing procedure. The cross-hole procedure consists of injecting fluid at a constant rate into a packed-off intervals within neighboring boreholes. If injection takes place at a constant pressure, the analysis considers only those data obtained after the flow rate stabilizes. Borehole orientation is generally unrelated to the principal hydraulic conductivity directions which, therefore, need not be known a priority.