杜84块馆陶组油层SAGD高产井影响因素和调整对策研究

综合分析曙一区杜84块馆陶组沉积相、储集层特征及隔夹层分布情况后认为,馆陶组油层具备大幅提高单井产能的静态地质条件。利用油藏工程计算和数值模拟手段,综合分析确定影响蒸汽吞吐转蒸汽辅助重力泄油(SAGD)后单井产能的主控因素,并研究相应的技术对策,包括物性夹层上下驱泄复合开发、优化注汽井点、合理控制汽腔操作压力、以泄定采等。

Influencing factors and adjustment countermeasures of SAGD high production wells in Guantao formation reservoir of Du 84 block

Based on the comprehensive analysis of the sedimentary facies, reservoir characteristics and interlayer distribution of Guantao formation in Du 84 block in Shuyi area, it is concluded that Guantao reservoir has the static geological conditions to greatly improve the productivity of single well. By using reservoir engineering calculation and numerical simulation method, through comprehensive analysis, the main controlling factors of the production capacity in single well by steam assisted gravity drainage(SAGD) after steam stimulation were determined, as well as the corresponding technical countermeasures, including the composite flooding-drainage development property drain composite sandwich and flooding development,optimization of steam injection well point, reasonable control operating pressure, steam chamber at mining drainage, etc.