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

摘要： 近年来,水平井开采底水、气顶油藏显然在初期得到一些令人满意的效果,但对于气、水突入油井,依然没有抑制措施,当水突破油井以后,油井大量出水,影响正常开采,成为阻碍直井、水平井技术发展的一大技术难题。本文研究了油田开发中水气突入油井的机理,首次建立了消除水、气突入油井的新理论,并提出了消除水、气突入油井的多种工艺方法。采用此理论和工艺可高效地开采低渗油气藏、特种油气藏、中高含水期的已开发油藏,可延长油井的无水、气采油期,提高原油采收率,给油田带来重大的经济效益。

关键词: 消除, 水平井, 水脊, 新方法, 提高采收率