| Title | Detection of a Target in a Rock Formation Using the Radar Fracture Mapping Tool |
|---|---|
| Authors | Duda, Leonard E.; Uhl, James E.; Gabaldon, John; Hsi-Tien Chang |
| Year | 1988 |
| Conference | Geothermal Resources Council Transactions |
| Keywords | Exploration; Research Agencies; Geophysical Surveys; Sandia; Radar Fracture Mapping |
| Abstract | A method to located fractures adjacent to but not intersecting a wellbore would be a great aid to the geothermal industry. A prototype downhole radar probe was recently compiled with the aim of locating fractures near a single wellbore. This probe, operating in the pulse mode with a bandwidth of 30 to 3000 MHz, contains two identical directional antennas. As with any prototype instrumentation, extensive field work is required to completely understand the characteristics of the system. A first steep in that understanding is to operate the instrument under known or controlled conditions. In this paper, some tests of the radar probe in a travertine quarry using a known target are reported. In the tests, the target is clearly detected from a borehole located 14 ft away. |