埕岛11断块油藏数值模拟及开发方案研究

Reservoir numerical simulationand development plan for No. 11 block oil reservoir in Chengdao oil field.

本文利用三维三相模拟软件对胜利油田埕岛１１断块进行了数值模拟研究，在对该区的初期开采历史进行拟合的基础上预测了未来的开发动态。着重研究了层系调整问题、自喷转抽时机、层位上（下）返对开发效果的影响等。选择了二套开发方案，方案Ⅰ：油井停喷后转抽至极限开发指标，上（下）返层位恢复自喷，停喷后转抽至极限开发指标。方案Ⅱ：油井停喷后即上（下）返层位开采，维持自喷，再停喷后合采转抽至极限开发指标。在分析对比的基础上选择最优调整方案，认为方案Ⅱ优于方案Ⅰ。

his paper presents the numerical simulation results of No. 11 block in Chengdao oil field ofShengli petroleum province by 3-D and 3-phase simulator ,and predicts the future develop-ment performances on the basis of matching the early production history. The series adjust-ment ,time for transferring flowing to pumping ,and effects of changing production formationon the development efficiency were emphasized. Two development plans were selected. PlanⅠ: oil wellls are produced by pumping to the economical development limit after they stopflowing. Then changing the production formation. The flowing production is restarted. Whenflowing finished,pumping production is used until the economic development limit. Plan Ⅱ :after oil wells stop flowing ,changing to another prodution formation and maintaining produc-tion by flowing ,and pumping production is used until the economic development limits whenoil wells finish flowing. It is thought that the lattter is superior to the former through someanalysis and comparison.