A Wireline-Operated Downhole Packer For Eiydraulic Measurements In Boreeoles

A wireline-operated packer was designed for reconnaissance logging in open boreholes and<br>field tested at a site in Belvidere, Illinois. Although the wireline packer uses a single downholeinflated<br>packer, analysis converts the wireline-packer data to estimates of hydraulic properties of<br>zones between adjacent packer measurement stations. A synthetic data example shows how the<br>single packer can be used to efficiently and effectively identify the depth intervals where<br>hydraulically active fractures or bedding planes intersect a borehole. Data analysis subsequently<br>provides estimates of the hydraulic head, transmissivity, and water quality for each of these zones.<br>Field tests of the wireline packer in Illinois produced estimates of zone hydraulic head and relative<br>transmissivity that agreed with values given by conventional straddle-packer hydraulic tests.