底水驱油藏单管采水抑锥射孔方案优化

对于底水能量较活跃的油藏，可利用采水抑锥工艺抑制或减缓底水的锥进，从而达到稳油控水的目的。以此为基础，提出了单管采水抑锥工艺，建立了单井径向油藏模型，运用数值模拟方法，对不同射孔位置及射孔厚度油井的生产动态进行预测，优化射孔方案，并分析了水体大小、渗透率各向异性等因素对底水锥进的影响，为底水油藏控水措施的选择提供理论依据，提高油田最终采收率。

Optimization of perforation project for inhibiting water coning by water recovery with single tube in the bottom water drive reservoir

Inhibiting water coning by water recovery from the oil reservoir with active bottom water can inhibit or slow down bottom water coning, stabilize oil production and control water cut. Water coning inhibiting technology with single tube was put forward then. The radial reservoir model of single well was established, and the well production performance for different thicknesses and various positions of perforation were predicted by means of numerical simulation. Optimum perforation project was provided. In addition , the influence of water body size and anisotropy of permeability on bottom water coning was analyzed. These results provided theoretical foundation for selecting measures of controlling water cut and enhancing the ultimate recovery efficiency of bottom water oilfield.