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过热蒸汽辅助重力泄油吞吐预热模拟及方案优化
杨建平1,王诗中2,林日亿3,韩飞4,王新伟3,郭彬5,王泽宇6,杨忠德7
(1.中国石油辽河油田高升采油厂,辽宁盘锦124125;2.中国石油辽河油田分公司开发事业部,辽宁盘锦124010;3.中国石油大学(华东)新能源学院,山东青岛266580;4.国家知识产权局专利局专利审查协作北京中心,北京100160;5.芯恩(青岛)集成电路有限公司,山东青岛 266500;6.潍柴动力股份有限公司,山东潍坊261061;7.中国石油辽河油田分公司钻采工艺研究院,辽宁盘锦124010)
摘要:
预热效果是影响蒸汽辅助重力泄油(SAGD)开发技术的重要因素。基于CMG模拟软件开展兴Ⅵ组区块吞吐预热技术研究。结果表明:在历史生产拟合符合率达到97.2%的基础上,吞吐预热生产2个周期,水平井和周围直井之间已基本形成有效的热连通,温度场在80~100 ℃,地层压力降到约3.5 MPa,达到转SAGD的较佳时机;注过热蒸汽的直井和水平井间平均温度较注湿蒸汽高,累积采油量也多,即预热效果较好,其中注汽强度400 m3/d、过热度22.62 ℃、注汽压力10.895 MPa的过热蒸汽预热效果最好;转入SAGD生产阶段的前期,无论单井还是全区,随着蒸汽品质升高,累积采油量增加。
关键词:  过热蒸汽  蒸汽辅助重力泄油  吞吐预热  方案优化
DOI:10.3969/j.issn.1673-5005.2020.03.012
分类号::TE 527
文献标识码:A
基金项目:国家自然科学基金项目(51874333);山东省自然科学基金项目(ZR2017MEE030);“十三五”国家科技重大专项子课题项目(2016ZX05012-002-005)
Simulation and scheme optimization of using superheated steam for huff and puff for preheating in SAGD
YANG Jianping1, WANG Shizhong2, LIN Riyi3, HAN Fei4, WANG Xinwei3, GUO Bin5, WANG Zeyu6, YANG Zhongde7
(1. Gaosheng Oil Production Plant of PetroChina Liaohe Oilfield Company, Panjin 124125, China;2. Development Business Department, PetroChina Liaohe Oifield Branch, Panjin 124010, China;3. School of New Energy in China University of Petroleum (East China), Qingdao 266580, China;4. Patent Examination Cooperation(Beijing) Center of the Patent Office,CNIPA, Beijing 100160, China;5. Sien(Qingdao) Integrated Circuit Company Limited, Qingdao 266500, China;6. Weichai Power Comany Limited, Weifang 261061,China;7. Research Institute of Drilling and Production Technology, Liaohe Oilfield Branch, PetroChina, Panjin 124010, China)
Abstract:
The preheating effect is an important factor to influence the development of SAGD. In this paper, the research on block-throughput warm-up technology of Xing Ⅵ Group was carried out based on CMG simulation software. The results show that, on the basis of the historical production fit rate of 97.2%, effective thermal communication has been basically formed between the horizontal well and the surrounding vertical wells after the two cycles of throughput preheating production. The temperature field is between 80-100 ℃, and the formation pressure is reduced to around 3.5 MPa, which is the good time to transfer SAGD. It is found that the average temperature between vertical and horizontal wells injected with superheated steam is higher than that with wet steam, and the cumulative oil recovery is also greater, meaning the preheating effect is better. And superheated steam preheating effect is the best with 400 m3/d of the injection rate, 22.62 ℃ of superheat steam temperature and 10.895 MPa of the steam injection pressure. In the early stage of SAGD production, no matter single well or whole area, with the increase of steam quality, the accumulated oil production will increase.
Key words:  superheated steam  SAGD  huff and puff for preheating  scheme optimization
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