Ann: Operations Update, page-191

The RNS on the 5th June clearly states there was no degrdation;
The analysis showed that the fracture geometries of the first pressure build-up, (July-August 2017), when compared to those from the second pressure build-up over Winter, (September 2017-June 2018), are very similar, with estimated fracture half-length of 504ft and 500ft, respectively. This is encouraging and indicates that the fracture system created has not undergone degradation. Given this, and the evidence of no build-up of debris in the wellbore, no remedial action will be required prior to commencement of flowback.