URL: https://geoscience.data.qld.gov.au/dataset/cr144429
Berwyndale 2R is a coal seam gas core well operated by QGC Pty Limited (QGC) in Authority to Prospect, ATP 632P.
Des Caling 1 re-entered Berwyndale 2 on 18-09-2006 to deepen the exiting well by cutting core from 297.00mGL to 610.00mGL.
The aim of the well was to target and evaluate coal seam gas out of the Walloon Subgroup Coal Measures.
The well encountered coals in the Walloon Subgroup. Three wireline runs were performed post drilling with Run 1 conducted from a bridged off section at 457.30mGL to surface.
Wiper trips were conducted and four further attempts to log failed with bridges at 487.00m, 487.00m, 456.00m and 453.00m respectively.
A successful Run 2 was completed through pipe from 600.00mGL to 241.00mGL and Run3 with acoustic scanner run from above a bridge from 420.00mGL to 250.00mGL.
The well was suspended.
The section from 252.80mGL to 297.00mGL was cored in 2001 during operations of Berwyndale 2.
Further coring was conducted in 2006 during Berwyndale 2R deepening operations from 297.00mGL to 610.00mGL.
A total of 313.00m of core was cut and retrieved in Berwyndale 2R from the Walloon Subgroup with only minor core loss (See Appendix 3 for core run totals).