Physical modeling,numerical simulation and field case analysis were carried out to find out the subsurface thermal oxidation state,thermal oxidation front characteristics and production dynamic characteristics of high...Physical modeling,numerical simulation and field case analysis were carried out to find out the subsurface thermal oxidation state,thermal oxidation front characteristics and production dynamic characteristics of high pressure air injection thermal oxidation miscible flooding technology.The lighter the composition and the lower the viscosity of the crude oil,the lower the fuel consumption and the combustion temperature are.The thermal oxidation front of light oil and volatile oil can advance stably,and a medium-temperature thermal oxidation stable displacement state can be formed in the light oil reservoir under high pressure conditions.With strong thermal gasification and distillation,light oil and volatile oil are likely to form a single phase zone of gasification and distillation with thermal flue gas at the high-temperature and high-pressure heat front,finally,an air-injection thermal miscible front.In light oil reservoirs,the development process of high-pressure air-injection thermal miscible flooding can be divided into three stages:boosting pressure stage,low gas-oil ratio and high-efficiency stable production stage and high gas-oil ratio production stage.Approximately 70%of crude oil is produced during the boosting pressure stage and low gas-oil ratio high-efficiency and stable production stage.展开更多
【目的】压气储能(compressed air energy storage,CAES)是利用电能和压缩空气势能相互转化来平衡电网波动的新型储能系统。CAES电站建造及运行相关经验的积累对CAES技术的发展具有重要意义。针对建造过程中设计方与现场信息传递效率低...【目的】压气储能(compressed air energy storage,CAES)是利用电能和压缩空气势能相互转化来平衡电网波动的新型储能系统。CAES电站建造及运行相关经验的积累对CAES技术的发展具有重要意义。针对建造过程中设计方与现场信息传递效率低、施工方管控难度大、项目整体流程监督难等问题,提出了一种适用于CAES电站的全流程智能体系。【方法】首先,分析CAES电站的建造流程,找出其工程特点。其次,围绕CAES电站从设计到运维的全过程,在空间和时间维度构建CAES电站的全流程智能建造体系。最后,在设计阶段提出正向设计出图等关键技术;在装备制造阶段提出设备虚拟预组装等关键技术;在施工阶段提出5D施工管理等关键技术;在运维阶段提出面向运维的数据交付等关键技术。【结果】对某300 MW级CAES示范工程的验证结果表明,CAES电站全流程智能体系的构建具有合理性,且关键设备及软件的应用为项目提供了技术支撑。【结论】通过CAES电站全流程智能体系及其关键技术,打通了电站建造各阶段的互通链条,实现了CAES电站的全生命周期信息管理。展开更多
基金Supported by the Science and Technology Project of PetroChina Exploration and Production Company.
文摘Physical modeling,numerical simulation and field case analysis were carried out to find out the subsurface thermal oxidation state,thermal oxidation front characteristics and production dynamic characteristics of high pressure air injection thermal oxidation miscible flooding technology.The lighter the composition and the lower the viscosity of the crude oil,the lower the fuel consumption and the combustion temperature are.The thermal oxidation front of light oil and volatile oil can advance stably,and a medium-temperature thermal oxidation stable displacement state can be formed in the light oil reservoir under high pressure conditions.With strong thermal gasification and distillation,light oil and volatile oil are likely to form a single phase zone of gasification and distillation with thermal flue gas at the high-temperature and high-pressure heat front,finally,an air-injection thermal miscible front.In light oil reservoirs,the development process of high-pressure air-injection thermal miscible flooding can be divided into three stages:boosting pressure stage,low gas-oil ratio and high-efficiency stable production stage and high gas-oil ratio production stage.Approximately 70%of crude oil is produced during the boosting pressure stage and low gas-oil ratio high-efficiency and stable production stage.
文摘【目的】压气储能(compressed air energy storage,CAES)是利用电能和压缩空气势能相互转化来平衡电网波动的新型储能系统。CAES电站建造及运行相关经验的积累对CAES技术的发展具有重要意义。针对建造过程中设计方与现场信息传递效率低、施工方管控难度大、项目整体流程监督难等问题,提出了一种适用于CAES电站的全流程智能体系。【方法】首先,分析CAES电站的建造流程,找出其工程特点。其次,围绕CAES电站从设计到运维的全过程,在空间和时间维度构建CAES电站的全流程智能建造体系。最后,在设计阶段提出正向设计出图等关键技术;在装备制造阶段提出设备虚拟预组装等关键技术;在施工阶段提出5D施工管理等关键技术;在运维阶段提出面向运维的数据交付等关键技术。【结果】对某300 MW级CAES示范工程的验证结果表明,CAES电站全流程智能体系的构建具有合理性,且关键设备及软件的应用为项目提供了技术支撑。【结论】通过CAES电站全流程智能体系及其关键技术,打通了电站建造各阶段的互通链条,实现了CAES电站的全生命周期信息管理。
