关键词: 水平井, 含水率, 水驱特征曲线, 数值模拟, 正交试验, 塔里木油田

Abstract:

The geological and fluid property parameters of the TZ4 reservoir, a bottom water reservoir in the Tarim Oilfield, were used to set up a numerical model. The model was adopted to calculate the cumulative oil, water and fluid production, which were then used to regress the parameter b, disclosing the water cut rising performance, in the Yu Qitai Water Drive Curve. Orthogonal tests show that oil viscosity, reservoir thickness, heterogeneity, and the location of the horizontal section are the main controlling factors of water cut rising performance  for horizontal wells. The relationship between these factors and the parameter b are established, and then the Formula to Plate method is presented, combining the Yu Qitai Plate of b, to predict the water cut rising performance. Application in the TZ4 reservoir demonstrates that the Fb method can be used to predict the water cut of horizontal wells in the bottom water reservoir.

Key words: horizontal well, water cut, water drive curve, numerical simulation, orthogonal test, Tarim Oilfield