轻质油藏高压注空气氧化特征与热混相驱技术  

Oxidization characteristics and thermal miscible flooding of high pressure air injection in light oil reservoirs

作　　者：席长丰[1,2] 王伯军[1,2] 赵芳 刘彤[1,2] 齐宗耀 张霞林 唐君实[1,2] 蒋有伟[1,2] 关文龙[1,2] 王红庄[1,2] 何东博[1,2] 宋新民[1,2] 花道德[3] 张晓琨 XI Changfeng;WANG Bojun;ZHAO Fang;LIU Tong;QI Zongyao;ZHANG Xialin;TANG Junshi;JIANG Youwei;GUAN Wenlong;WANG Hongzhuang;HE Dongbo;SONG Xinmin;HUA Daode;ZHANG Xiaokun(State Key Laboratory of Enhanced Oil Recovery,Beijing 100083,China;PetroChina Research Institute of Petroleum Exploration&Development,Beijing 100083,China;China University of Geosciences,Beijing 100083,China)

机构地区：[1]提高石油采收率国家重点实验室,北京100083 [2]中国石油勘探开发研究院,北京100083 [3]中国地质大学(北京),北京100083

出　　处：《石油勘探与开发》2022年第4期760-769,共10页Petroleum Exploration and Development

基　　金：中国石油勘探与生产分公司科技项目“空气热混相驱技术与试验研究”

摘　　要：通过物理模拟实验、数值模拟和现场实例分析,综合研究轻质油藏高压注空气热混相驱的地下热氧化状态、热氧化前缘稳定性及生产动态特征。研究结果表明,原油组分越轻、黏度越低,热氧化燃料消耗量越低,氧化生热温度越低。稀油和挥发油热氧化前缘能够稳定推进,形成高压条件下的轻质油藏中温热氧化稳定驱替状态。稀油和挥发油的热气化和蒸馏作用强,容易在高压高温热氧化前缘与热烟道气一起形成气化和蒸馏单相区带,形成注空气热混相前缘。轻质油藏高压注空气热混相驱开发过程可分为增压见效、低气油比高效稳产、高气油比生产等3个阶段,增压见效阶段和低气油比高效稳产阶段产出70%以上的原油。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.

关 键 词：轻质油藏 空气驱 驱替特征 高压热氧化前缘 热混相驱 火驱 

分 类 号：TP345[自动化与计算机技术—计算机系统结构]