胡尖山油田长7致密油藏提高单井产能技术对策

Technology countermeasures of improving single well productivity of Chang 7 tight oil reservoir of Hujianshan oilfield

鄂尔多斯盆地胡尖山油田长7油藏资源潜力大,目前控制地质储量1.3×108t,但储量丰度低,隔夹层较发育,储层物性差,开发难度大,投产井单井产能低,单井平均产能不到2.0t。围绕"提高单井产量,改善开发效益"这一主题,通过对胡尖山油田的构造特征、沉积相特征、油藏特征、开发现状及所采用的6种不同开发试验井网、井排距的试油、试采、工艺改造措施等进行评价对比分析,得出提高长7致密油藏提高单井产能的技术对策,为该区后期增储建产、效益建产提供了参考意见。

Chang 7 formation of Hujianshan oilfield in Ordos basin has a big resource potential. At present, the probable reserve is 1.3×108 t, with characteristics of low reserves abundance, developed barrier and interbedded layers, poor reservoir property, big development difficulty and low single well productivity, with less than 2.0 t per well. Around the theme of 'improving single well productivity and enhancing development benefit', through characteristics analysis of structure, sedimentary facies and development situation, and comparision evaluation of production testing and formation testing of 6 different kinds of well pattern and spacing has been carried out and then the technology countermeasures of improving single well productivity have been achieved, which provides reference opinions for increasing production and enhancing benefit in the later period of the area.