柴达木盆地七个泉油田二区块为中低孔-低渗油藏,由于其储层单一,物性较差,先后实施了12口水平井挖潜剩余油,提高了区块采油速度和采出程度。笔者根据油井开采典型特征将其分为三类,分类总结了水平井开发效果,及同类水平井与直井开发效果进行对比分析,总结两类井型的开发效果差异。 The second block of the Qizuquan Oilfield in the Qaidam Basin is a medium-low porosity and low permeability reservoir. Due to its single reservoir and poor physical properties, 12 horizontal wells have been successively tapped for residual oil to increase the recovery rate and recovery degree. According to the typical characteristics of oil well exploitation, the author classifies them into three categories, summarizes the horizontal well development effect, and compares the similar horizontal well with vertical well development effect, summarizes the differences between the two well types.