Ann: Operations Update, page-45

Here's a slideshow from Chesapeake on 'Imbibition' in Shale, explains how it all works, pore throat diameter & the proppant doing their bit aside U still need oil to flowbk after soakback etc.

https://www.epa.gov/sites/productio...eofinducedandnaturalimbibitioninfracfluid.pdf

It looks like that the HRZ is a tighter formation to flow back any hydrocarbons readily, hence the need to shut-in & monitor the pressure buildup etc & open in 6 wks time. Recovery of fluid is very low frm the reported 16% collected so far.

Their neighbours, GB already tried this with N2 pumping etc at their Alcor#1 well 5 yrs back from a 10 foot perf'd section in the HRZ & 15 ft perf'd section in the Shublik formation. So looks like that it's a bit of a challenging code to crack in the HRZ Shale for now.