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乐安稠油油藏开发至中晚期后,封堵作为一项重要的措施得到广泛应用,但该地区存在原油粘度大,油井水平段长,封堵时堵剂用量大等诸多不利因素。通过封堵前对地层进行降粘处理,优化堵剂选择,精确堵剂用量,封堵中控制泵压、排量,钻塞时优化钻具选择等措施,在实际应用中收到良好的效果,具有一定的推广价值。
Blockage has been widely used as an important measure since the development of the heavy oil reservoir in the middle of the Luan period. However, there are many unfavorable factors such as the viscosity of crude oil, the long horizontal section of oil well and the large amount of plugging agent used in the blockage. By blocking the formation before the blocking process to optimize the choice of plugging agent, the exact amount of plugging agent, blocking the control of pump pressure, displacement, drilling optimization drilling tool selection and other measures, in practical applications received good results , With a certain promotional value.