一套井网分注合采采油工艺技术可行性研究

大庆外围油田部分地区存在着葡萄花和扶余油层的叠加含油区，这两类油层埋藏深度、地层压力、渗透率存在较大差异，储量丰度低，各自单独作为一套系开发经济效益不明显。但叠加起来储量丰度增加，合采具有明显的效益，若采用简单的合层开采工艺，油水井层间干扰大，影响开发效果，大庆油田经过近四年的试验、研究，形成了一套长跨距油层的分注、合采采油工艺技术，基本苦闷了层间跨距大、油层物性和产能差异较大的油层的合采工艺，提高了外围低渗透油的开发效果。

The technology of separate zone waterfiooding and commingled producing in one well pattern

There are stacking oil province of Putaohua and Fuyu in Daqing Oilfield. These layers have major difference in burial depth,permeability and formation pressure,and their reserves are very low. There is no economic benefit to stand alone development for these layers. Through four years' research and a series of experiments, this problem has been successfully solved. A new technology of separate zone waterfiooding and commingled producing in one well pattern is developed. This new technology improves economic benefit for Daqing Oilfield.