Geology,surface expression,porosity,fraccing

Reading through the material on Mereenie, Palm Valley Deep, OOraminna raises some questions. 1. Where ground is naturally fractured can industrial fracturing increase productiveness ? 2. does low average porosity influence decision to fracture ? 3. does the combination of low average porosity and limited natural fracturing make a prospect unproductive ? 4. does the following statement indicate anything other than something should be followed up ? " The Palm Valley gas field ...has a strong surface expression with topographic relief of approximately 350m and an anticlinal structural axis that can be traced for over 30km ".