Evaluation of oseberg horizontal wells after four years production

摘要

The first horizontal oil producer in the Oseberg Field was drilled in 1992,and to data a total of 22 horizontal wells have been comploeted including one multi-lateral well.The evtensive use of long reach,multi-objectie horizontal wells is vital to prolong the plateau prouction period and to achieve high recovery.The expected ultimate oil recovery is currently estimated at about 60 percent.This paper discusses the experienes with the Oseberg horizontal wells such as drilling,completion,production logging and well performance.