论文部分内容阅读
水力压裂是采油厂低渗透油田提高油井产能的重要工艺措施,特别是近年来,随着低渗透滩坝砂油田不断开发,储层物性差,油井自然产能低,必须压裂投产,统计2001-2009年平均年压裂48井次,累计新井压裂当年产油、老井措施增油38万吨,压裂工艺成为纯梁提高难动用储量的有力手段和技术支撑。但随着特低渗区块增多,泥质含量增高,地层能量降低的现象出现时,压裂效果开始逐渐变差。为进一步提高压裂效果,压裂中油层保护作用显得尤为重要。
In recent years, hydraulic fracturing is an important technological measure to improve oil well productivity in low permeable oilfields. Especially in recent years, with the continuous development of low-permeability beach dam sand fields, poor reservoir physical properties and low natural productivity of oil wells, fracturing and commissioning are required. Statistics 2001 In 2009, the average annual fracturing rate was 48 wells. The accumulated oil production in the new well fracturing year was 380,000 tons. The fracturing technology has become a powerful tool and technical support for the pure beam to increase the hard-to-use reserves. However, with the increase of ultra-low permeability blocks, the increase of shale content and the decrease of formation energy, the fracturing effect begins to deteriorate gradually. In order to further improve the fracturing effect, the protection of reservoirs in fracturing is particularly important.