Temperature & Oil Measurement Greenrock: Jingemia oil field
nr. Dongara, Perth Basin, Western Australia

GSPA-001: VB1: Jingemia 1

Western Australia geology.


  • The overall objective of the survey is to test the applicability of Adrok’s ADR Scanner for the geological mapping of potential reservoirs and hot sandstone aquifers.
  • To identity the Wagina Formation and High Cliff Sandstone
  • The geothermal potential of the area appears to be primarily associated with the High Cliff sandstone (~3km depth)
  • The formation was encountered in the petroleum exploration well Jingemia-1 and exhibited maximum porosities in excess of 20% and an associated corrected temperature of approximately 123°C.
  • VB1 was planned at the collar of the vertical Jingemia-4 in order to intersect the bottom of Jingemia-1, and as a training site for the High Cliff sandstone and the oil bearing Wagina sandstone.

Figure 1: Typical Adrok Survey Field Acquisition.

Figure 1: Example of a WARR scan: one antenna stationary, the other moved down the scan line.

Seismic showing time to targets

Interpreted top of Wagina SST


  1. Establish relationship using pT1 model
  • A cubic regression of depth on temperature (R2 = 0.9734) was formed
  1. Use relationship in a predictive regression model where the independent variable, temperature, is predicted from the measured depth of each layer
  2. Note that the predictive model gives a higher regression relationship (R2=0.9995 over 97 degrees of freedom, SIG 0.1%)


  1. Training based on relatively shallow, high temperature oil reservoirs to depth 600m which may explain the drift in predicted against calibration temperature
  2. Future improvement would be to train on deeper high temperature targets

Figure 1: Excerpt of E-ADR fence (red) showing peaks throughout Kockatea and Carynginia shales. Wagina Formation in Pink for Vbores JT-0 to JT-800.