边水稠油油藏多元热流体吞吐生产特征及治理措施研究

Research on Production Characters and Control Measures of Multi-Thermal Fluid Stimulation for Heavy Oil With Edge Water

随着水平井距内含油边界距离逐步缩短,A油田南区含水率上升速度逐步加快,开发效果变差,但地层能量尚能得到有效补充。为进一步改善A油田多元热流体吞吐开发效果,提出了优化热采井距边水距离、确定纵向布井位置及实施边部提液等治理措施。数值模拟结果表明,A油田水平井距内含油边界应在240 m以上,水平井布井位置应在油层中部,一线吞吐井提液量为100 m^3/d。

The production data of Bohai A Oilfield shows that with the shortening of the distance between horizontal well and edge water,the increase of water cut speeded up and the development effect decreased. But the formation energy is effectively supplemented,so it can guarantee the development result. In order to improve the effect of thermal recovery of A Oilfield,some control measures such as optimizing distance of the distance between horizontal well and edge water,well longitudinal position and increasing liquid for edge well were put forward. The numerical simulation results show that for A Oilfield,the optimal distance between horizontal well and edge water should be more than 200m; longitudinal position for horizontal well should be in the middle of the reservoir and the quantity of increasing liquid for edge well is 100 m^3/d.