长庆油田超低渗透油藏开发地面设计探讨

Discussion on Surface Design for Low Permeability Oil Reservoir of Changqing Oilfield

长庆油田超低渗透油藏开发的地面工程设计针对黄土高原复杂地形特点以及大规模滚动建产和快速建设需要,根据地质开发特点、原油物性和管理需求,应用了大丛式井布井和井站一体的小站布局模式,功图计量、树枝状不加热集输、油气混输二级布站的油气集输工艺,供注水一体化的水源直供、小站增压注水工艺,流沙连续过滤、反洗的水处理工艺等,优化简化了地面系统,同时推行标准化设计、模块化建设、数字化管理、市场化运作、社会化服务,实现了地面建设投资的有效控制。

According to the characteristics of complex loess plateau topography and the requirements of large scale rolling and rapid construction,as well as based on the geological features,oil properties and production management needs,a set of techniques to optimize and simplify the surface design for ultra low permeability oil reservoir of Changqing Oilfield are adopted.They include the large cluster well pattern;the small station pattern of integrated wells and station;the two-level station distribution gathering process of dynamometer diagram metering,dendritic gathering without heating and oil and gas mixed transmission;the water injection process of integrated water source for water supply and injection and small station supercharging injection;the water treatment process of drifting sand continuous filtration and backwash.In addition,the standardized design,modularized construction,digital management,market operation and socialized service are carried out to control surface construction investments effectively.