SAGD 循环预热阶段加速连通方法的研究及应用

Research and application of accelerated intercommunication method in SAGD cyclic pre-heating period

赵睿 杨智 吴永彬 张瑞强 罗池辉 郤一臻

ZHAO Rui YANG Zhi WU Yongbin ZHANG Ruiqiang LUO Chihui XI Yizhen

中国石油新疆油田分公司勘探开发研究院，新疆克拉玛依　834000 中国石油勘探开发研究院，北京　100083 中国石油西部钻探测井公司，新疆克拉玛依　834000 中国石油新疆油田分公司风城油田作业区，新疆克拉玛依　834000

Research Institute of Petroleum Exploration and Development, Xinjiang Oilfield Company, CNPC, Karamay 834000, China Research Institute of Petroleum Exploration and Development, CNPC, Beijing 100083, China Xibu Drilling and Logging Company, CNPC, Karamay 834000, China Fengcheng Oilfield Operation District, Xinjiang Oilfield Company, CNPC, Karamay 834000, China

SAGD 循环预热阶段的预热效率和连通速度，都对生产阶段的生产效果具有重要影响。通过数值模拟研究，提出一种加快SAGD 循环预热阶段连通速度的方法，建立了“低压—高压—拟SAGD”的预热模式，实现了在较短时间、形成优先渗流通道风险较低的情况下，注采井之间的水力连通速度得以有效提高的目的。该方法在风城超稠油油藏SAGD 规模开发中的应用效果良好，具有一定的推广价值。

The pre-heating efficiency and communicating speed in SAGD cyclic preheating period have important effects on production during production period. Through numerical simulation research, a method of accelerating intercommunication speed in SAGD cyclic preheating period was presented, and a preheating mode of ‘low pressure-high pressure-simulated SAGD’ was built, which has effectively improved the hydraulic communication speed between injectors and producers while ensuring low risk in establishing preferred seepage passages in a short time. This method was effectively used in SAGD development of Fengcheng Ultra-heavy Oil Reservoir and is of certain promotion value.

10.13639/j.odpt.2015.02.018