水平井开采底水油藏的消锥工艺及证明

采用水平井开采底水、气顶油气藏,水不可避免地要向油层突入,困扰着水平井技术的发展。研究了水平井水、气锥进机理,提出水平井开采底水、气顶油藏过程中消除气、水突入油层的理论,并根据这个理论提出了几种消除锥进/脊进的工艺方法,不仅从哲学角度论证了这个理论与方法的可行性,而且还从油藏工程角度出发,采用叠加原理,导出了在此理论下底水油藏的油藏工程计算公式。

DECONING TECHNOLOGY AND TESTIFYING OF USING HORIZONTAL WELL TO EXPLOIT BOTTOM WATER RESERVOIR

When adopting horizontal well to exploit bottom water and gas cap reservoir, water and gas will inevitably cone into it. This is an obstacle to the development of the horizontal well technique. In this paper, studied water and gas coning mechanism in horizontal well, put forward a theory of avoiding water and gas from coning during exploiting bottom water and gas cap reservoir with horizontal well. Based on the theory, put forward several technologies of avoiding water and gas from coning. This paper not only demonstrated the feasibility of the theory and the technologies, but also derived reservoir engineering calculation formula of bottom water reservolr based on the theory by use of superposition principle.