论文部分内容阅读
低渗透油气藏开发是全球开发的大趋势,也是中国油气开发建设的主战场。而低渗透油田开发难度大,一般对此类油井都需要进行压裂技术。对于低渗透油田,以前的试井软件模型中只考虑了裂缝情况,没有考虑到非达西渗流情况,从而使试井解释结果与实际有所差异。为此运用低速非达西压裂井模型在考虑启动压力的情况下,建立有限导流垂直裂缝双线性流模型,这种模型可以提高试井解释的可靠性。
The development of low-permeability reservoirs is a general trend of global development and also the main battlefield for China’s oil and gas exploration and construction. However, the development of low-permeability oilfields is very difficult, and fracturing techniques are generally required for such wells. For low-permeability oilfields, only the fractures were taken into account in the previous well testing software model, and the non-Darcy seepage was not taken into account, thus the results of well test interpretation were different from the actual ones. Therefore, using the low-velocity non-Darcy fracturing well model, considering the starting pressure, a bilinear flow model with finite conductivity and vertical fractures is established, which can improve the reliability of well interpretation.