the next phase, page-27

Running to plan from what I see
The one week delay to fine tune the procedure has passed and now it is onto flow testing. We are advised this will occur in the week beginning 28th, so not necessarily the day of the 28th, but reasonable to expect the procedure to begin on that day as what is the point in delaying.
All the speculation on the drilling mud has certainly muddied the waters. Congratulations to the researcher that found the heavy haulage permits, a few points to bear in mind though

88e has not announced them, so fair to conclude not market sensitive

These permits need to be sorted in advance, and could just be prudent planning for a possible contingency

They cover the period 30 days after tomorrow (30-08-17 to 29-09-17) and the flow procedure first step should already have begun on the 28th

Heavy fluids in the wellbore are the enemy of flow, the lighter the well bore column the better the chance of flow. If flow control is required due to high pressure, a valve can simply be closed. It is hard to conceive a purpose for mud in the initial flow testing.

(It is purely speculative, but seems more likely the mud is planned for a temporary well kill, to enable access to components within the well after the initial flow testing. If enough mud weight is placed in the wellbore the pressure at the well top drops to zero thereby allowing safe access to the well.)