杜84断块超稠油开发中后期稳产对策研究

对杜84断块超稠油生产中后期暴露的主要矛盾，即随着轮次升高，周期吞吐效果变差，井下技术状况日益变差。油层动用不均，汽窜加剧等问题进行了分析。并提出了相应的稳产对策-实施多井整体吞吐，大修复产，调剖等措施。现场应用证明，这些措施基本能够确保杜84断块超稠油中后期的稳产。

Study on production stabilization measures in mid-late development phase of super heavy oil in block Du84

This paper analyzes major problems appeared in mid-late development phase of super heavy oil in block Du84, such as poor effectiveness of steam stimulation as cycles getting more, down-hole status getting poorer, uneven producing of reservoirs, and steam channeling getting severe. Corresponding countermeasures for production stabilization are proposed, including multi-well cyclic steam stimulation, workover, and profile control. Field application shows that these measures can ensure stable production of super heavy oil in block Du84 in mid-late period.