浅层超稠油油藏双水平井SAGD电加热预热启动参数优化设计与矿场试验

何万军; 孙新革; 吴永彬; 罗池辉; 郭昊; 张基朋; 李淑娴

doi:10.3969/j.issn.1006-6535.2024.06.009

特种油气藏 >

2024 , Vol. 31 >Issue 6: 77 - 83

DOI: https://doi.org/10.3969/j.issn.1006-6535.2024.06.009

油藏工程

浅层超稠油油藏双水平井SAGD电加热预热启动参数优化设计与矿场试验

何万军 ,
孙新革 ,
吴永彬 ,
罗池辉 ,
郭昊 ,
张基朋 ,
李淑娴

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1.中国石油新疆油田分公司,新疆克拉玛依 834000;
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

何万军(1978—),男,高级工程师,2001年毕业于大庆石油学院石油工程专业,2007年毕业于中国石油大学(北京)矿产普查与勘探专业,获硕士学位,现从事稠油油藏提高采收率工作。

收稿日期: 2023-12-12

修回日期: 2024-09-30

网络出版日期: 2025-01-22

基金资助

中国石油科学研究与技术开发项目“稠油提高采收率关键技术研究——井下大功率电加热器研制”(2022DJ1409)

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Optimization Design and Field Test of SAGD Electric Heating Preheating Start-up Parameters for Double Horizontal Wells in Shallow Super-Heavy Oil Reservoirs

He Wanjun ,
Sun Xin'ge ,
Wu Yongbin ,
Luo Chihui ,
Guo Hao ,
Zhang Jipeng ,
Li Shuxian

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1. PetroChina Xinjiang Oilfield Company,Karamay,Xinjiang 834000,China;
2. Research Institute of Petroluem Exploration & Development,Beijing 100083,China;
3. China University of Geosciences (Beijing),Beijing 100083,China

Received date: 2023-12-12

Revised date: 2024-09-30

Online published: 2025-01-22

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摘要

由于新疆油田陆相非均质超稠油油藏SAGD注蒸汽循环预热启动过程中,注采井井间压差波动较大,现场调控难度大,蒸汽易进入高渗透水平段油层,造成水平段局部优先连通或者汽窜,蒸汽腔发育不均衡,导致水平段动用程度较低,从而影响SAGD生产效果。为此,提出了双水平井SAGD水平段下入电加热器的开发方式,利用热传导原理对注采井井间的油层进行均匀加热,并优化了SAGD电加热预热启动的关键操作参数,包括SAGD电加热启动井筒预处理、流体替液循环操作参数和转SAGD生产时机,形成了SAGD电加热预热启动操作流程。在新疆油田重A井区FHW01TW井组浅层超稠油双水平井进行SAGD电加热预热启动矿场试验,预热启动时间从320 d下降至163 d,节省蒸汽3.79×10⁴ t,减少CO₂排放4 846.6 t。该技术将成为双水平井SAGD开发降低CO₂排放的重要手段之一。

关键词： SAGD; 电加热; 预热启动; 超稠油; 新疆油田

本文引用格式

何万军 , 孙新革 , 吴永彬 , 罗池辉 , 郭昊 , 张基朋 , 李淑娴 . 浅层超稠油油藏双水平井SAGD电加热预热启动参数优化设计与矿场试验[J]. 特种油气藏, 2024 , 31(6) : 77 -83 . DOI: 10.3969/j.issn.1006-6535.2024.06.009

Abstract

Due to the large fluctuation of pressure difference between injection and production wells during the preheating and start-up process of SAGD steam injection cycle in continental heterogeneous ultra-heavy oil reservoirs in Xinjiang Oilfield,it is difficult to control on site.Steam is easy to enter the oil layer of high permeability horizontal section,which is easy to cause local preferential connection or steam channeling in horizontal section.The development of steam chamber is not balanced, which leads to the low utilization degree of horizontal section,thus affecting the production effect of SAGD.Therefore,the development method of putting electric heaters into the horizontal section of SAGD in double horizontal wells is proposed.The oil layer between injection and production wells is uniformly heated by the principle of heat conduction,and the key operation parameters of SAGD electric heating preheating start-up are optimized,including SAGD electric heating start-up wellbore pretreatment,fluid replacement cycle operation parameters and SAGD production time.The SAGD electric heating preheating start-up operation process is formed.SAGD electric heating preheating start-up field test was carried out in the shallow ultra-heavy oil double horizontal well of FHW01TW Well Group in Chong A Well Area of Xinjiang Oilfield.The preheating startup time was reduced from 320 days to 163 days,3.79×10⁴ t steam was saved and 4 846.6 t CO₂ emission was reduced.This technology will become one of the important means to reduce CO₂ emission in SAGD development of shallow double horizontal wells.

Key words： SAGD; electrical heating; preheating start-up; super-heavy oil; Xinjiang Oilfield

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