RE: Vertical well and option of Horizontal addition23 Jan 2021 14:22
On one of their wells they used water based muds. I think the last one.
My main concern is getting all 4 zones in one drill. VERTICALLY. Each one should be isolated as drilled. With an 11 inch BOP the last casing string would have to be set at 7800 feet 200 feet above the first zone. So we set 9 5/8 shoe there. Fine.
Drill zone 1 and run 7 inch liner and cement. Drill zone 2 with a 6" bit, Run a 5" liner over that.
Tell me how to get to zone 3? Then tell me how to get to zone 4 please.
All zones have different pressures, Believe it or not the one below can be lower than the one above.