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近几年以来,长庆油田长7层开展了致密油藏水平井开发技术攻关与实验,实现了渗透率0.15md-0.30md致密油藏的有效开发。水平井开发单井产能达到定向井开发的7-10倍,开发效果较好,但是由于水平井单井产能受多方面因素的影响,初期产能存在较大的差异性。本文结合长庆油田某区地层特征,研究了油藏地质因素和压裂工程因素对水平井初期产能的影响,为下步水平井提高单井产能,提高最终采收率提供依据。
In recent years, the Changqing Oilfield has carried out research and experiments on the development of horizontal wells in tight reservoirs, realizing the effective development of tight reservoirs with permeability of 0.15md-0.30md. The development of horizontal well has the single well productivity of 7-10 times of that of directional well, which has good development effect. However, due to the influence of many factors on single well productivity of horizontal well, initial production capacity is quite different. Based on the characteristics of the strata in a certain area of Changqing Oilfield, the paper studies the influence of reservoir geology and fracturing factors on the initial productivity of horizontal wells, and provides the basis for improving horizontal well productivity and improving final recovery ratio.