摘要
针对大庆长垣南部薄差油层高含水层产液量高、差油层动用程度低的问题,开展了油水井对应调压技术研究。对应调压就是采油井根据井层含水率情况采取调整流压措施,注水井根据注水压力调整情况调整注水方案,最终达到提高动用厚度,改善层间及平面矛盾的目的。大庆油田杏南开发区现场试验对应调压技术10个井组,措施后平均单井日增液量0. 921,日增油量0.20t,含水率下降0.69个百分点,流压下降0.78MPa,提高了薄差油层平面及层间动用程度,实现了井组整体增油降水。油水井压力调整应以井组为单元,以追求井组平面整体动用为目标,综合考虑,合理制订流压提、降措施,能够在一定程度上改善注入剖面、采出剖面,实现薄差层启动。
The corresponding pressure regulating technology in producers and injectors was researched to rationally control the liquid production of high water-cut formations and effectively improve the production effect of poor reservoirs voirs in the southern of Daqing placanticline.Corresponding pressure regulation was to take measures to adjusting flow pressuree on the basis of the water cut of wells and layers at the producers;and to adjust the water injection schemes on the basis of water injection pressure regulation at the injectors,thus to achieve the goal of increasing the producing thickness,and relieving the contradictions between the inter-strata and plane.Field test of the corre-sponding pressure regulating technology had been conducted for l0 well groups in Xingnan Development Zone of Daqing Oilfield.After treatment,the liquid production per well increased by 0.92t;oil production rose by 0.2t per day on average;water cut dropped by 0.69%;and flow pressure declined by 0.78MPa.The plane and inter-strata's producing degree of thin and poor reservoirs was enhanced,and the overall oil production growth and water cut de-dine of well group were achieved.Pressure regulation of producers and injectors should be conducted in terms of well groups in order to pursue the overall producing level of plane.The increase and decrease of flow pressure could be rationally controlled,which had improved both the injection and the production profiles to certain degree and a-chieved the goal of effective producing in thin and poor reservoirs.
出处
《采油工程》
2015年第4期64-67,81-82,共5页
Oil Production Engineering
关键词
杏南开发区
薄差储层
对应调压技术
合理流压
系统效率
有效动用
Xingnan Development Zone
thin and poor reservoir
corresponding pressure regulating technology
rational flow pressure
system efficiency
effective producing
