Durham 2XI finished day three on 466-3 with Mark Stoneman remaining unbeated on 236 after spending the day at the crease.
Gordon Muchall contributed 94 off 146 balls and Karl Turner also added 51.
Durham go into day four 190 runs ahead with Stoneman and Michael Richardson at the crease.
KentEssex v Durham Day three [WORD, 24k]
Resuming on 141 without loss the combined Kent/Essex side went on to score 468 from 131.5 overs.
MCC Young Cricket Gaurav Dhar picked up opener Ferley for 99 as he went on to pick up 3-91.
Academy seam bowler Jamie Harrison also collected 3 for 51. Durham begin day three trailing by 276 runs.
To view day two scorecard please click here [14k]
Durham 2XI are currently playing a combined Kent/Essex side in a four day friendly at Beckenham.
Gordon Muchall, captaining the side, won the toss and elected to bat first. He went on to contribute 98 off 140 balls to the Durham total with the eleven all out for 192 in 55.2 overs.
The opposition were 141 without loss in response at the close of play on day one.
Durham team: Stoneman, Turner, Muchall G*, Gidman, Richardson +, Raine, Coyne, Muchall P, Dhar, Harrison, Harding.
Download the scorecard here. Kent and Essex v Durham 2XI scorecard [WORD, 32k]