关键词: 消除, 水平井, 水脊, 新方法, 提高采收率

Abstract: The stable oil production and the water control have been a long time strategic task in the oilfields around the world and a large amount of funds have been used every year recentlly.But bottom water and gas cap breakthrough into the well are still out of control.There are much more water in the well which effect on oil well conventional production that become a difficulty technology problem of preventing the development of horizontal well technology when water abrupts into oil well.This paper persents a mechanism of bottom water and gas cap breakthrough oil well in oilfields development.A new theory and many kinds of technologies of eliminating water and gas into oil well are presented.If the theory and methods are applied, more oil and gas can be produced from the reservoir of low permeability, special reservoir and developed reservoir of the middle and high water cut stages.No water and gas of oil production time are prolonged, enhance oil recovery is improved, greater economic benefits for oilfields is obtained also.

Key words: elimination, horizontal well, water crest, new method, EOR