稠油油藏火烧—蒸汽复合驱开发效果实验  

Experiment on development effect by fire-steam flooding in heavy oil reservoir

作　　者：张鸿[1,2] 马宝全 程海清[1,2] 张勇[1,2] 胡军 ZHANG Hong;MA Baoquan;CHENG Haiqing;ZHANG Yong;HU Jun(Exploration and Development Institute of Liaohe Oilfield Company,PetroChina,Panjin,Liaoning 124010,China;National Energy Heavy Oil R and D Center,Panjin,Liaoning 124010,China;Exploration and Development Institute of Daqing Oilfield Company Limited,PetroChina,Daqing,Heilongjiang 163712,China)

机构地区：[1]中国石油辽河油田分公司勘探开发研究院,辽宁盘锦124010 [2]国家能源稠(重)油开采研发中心,辽宁盘锦124010 [3]中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《东北石油大学学报》2021年第4期93-102,I0006,I0007,共12页Journal of Northeast Petroleum University

基　　金：国家科技重大专项(2016ZX05055)。

摘　　要：稠油油藏单一方式火烧开采后期存在易气窜、燃烧不充分、波及效果差等问题。以辽河油田G3块火驱试验区天然岩心为研究对象,进行稠油油藏一维火烧物理模拟实验,结合产出流体、储层矿物特征,分析火烧—蒸汽复合驱热采技术优势,应用数值模拟进行特征验证和生产预测。结果表明:火烧—蒸汽复合驱比单一方式火烧的火线最高温度提高150℃以上、高温区域扩大2倍以上。水蒸汽参与火烧过程产生化学反应,降低开发后期对空气的需求;反应过程中释放大量热能,既加热原油促进流动性,又加热储层岩石提高储层渗流能力。火烧—蒸汽复合驱提高阶段采油速度,改善开发效果,数值模拟结果与物理模拟实验特征吻合。该结果为稠油油藏进一步改善火烧油层开发效果提供依据。Aiming at the problems of easy gas channeling,insufficient combustion and poor sweep effect in the later stage of single mode of in-situ combustion in heavy oil reservoir,one-dimensional physical simulation device is used to carry out the natural core laboratory experiment in block G3 of Liaohe Oilfield.Combined with the characteristics of produced fluid and reservoir minerals,the advantages of this technology are explored,and the characteristics verification and production prediction are carried out by means of numerical simulation.The experimental results show that the maximum temperature of the fire line is 150℃higher and the high temperature area is twice wider than that of the single way.With the mixed injection of steam,steam takes part in the chemical reaction in the process of fire,which reduces the air demand in the later stage of development.A large amount of heat energy released from the reaction process can not only heat the crude oil to promote its fluidity,but also heat the reservoir rocks and improve the permeability of the reservoir to crude oil.In addition,the combined flooding can improve the oil recovery rate and the development effect to a certain extent.The results of numerical simulation are consistent with the characteristics of indoor physical simulation.This study provides a theoretical basis for further improving the development effect of in-situ combustion in heavy oil reservoir.

关 键 词：火烧—蒸汽复合驱 稠油油藏 火线温度 储层渗流 采油速度 物理实验 

分 类 号：TE345[石油与天然气工程—油气田开发工程]