鄂尔多斯盆地低渗透气藏水平井开发技术难点研究

Study on Difficulties of Horizontal Well Development Technology in Low Permeability Gas Reservoirs in Ordos Basin

鄂尔多斯盆地含气层系较多,且其非均质性相对较强,具有明显的低压力,低丰度以及低渗透的“三低特征”。在进行鄂尔多斯盆地气藏开发过程中,其开发方式经历了多重变革,现阶段,水平井开发方式已逐渐代替原有的直井开发。因此,在简单阐述鄂尔多斯气田的基础上,对现阶段常见的水平井开发技术进行重点介绍,并全面分析当下鄂尔多斯盆地低渗透气藏开发的重点及难点,提出相应的改进策略。

Ordos Basin has many gas bearing strata,and its heterogeneity is relatively strong,with obvious low pressure,"Three low characteristics"of low abundance and low permeability".In the process of gas reservoir development in Ordos Basin,its development mode has undergone multiple changes.At this stage,the horizontal well development mode has gradually replaced the original vertical well development.Based on a brief description of Ordos Gas Field,this paper will focus on the introduction of common horizontal well development technologies at this stage,and comprehensively analyze the current key and difficult points of low permeability gas reservoir development in Ordos Basin,and propose corresponding improvement strategies.