Question for MCB55...30 Oct 2019 11:49
re. 'Mainly because there ie pressurised oil in the fracture, of a balances/bit lower to that weight of the mud column' question: when they start to flow oil out of the well and there is a mud column that must be lifted, do they lower the weight of the mud by diluting it in some way - or do they stop overbalancing the well near to target depth, allowing the oil pressure to increase so lifting the mud ahead of the oil? or does this just happen as mud fluid escapes a bit more into the reservoir over time after they stop overbalancing?