低渗透稠油微波原位加热开采数值模拟研究

doi:10.3969/j.issn.1006-6535.2020.06.017

特种油气藏 ›› 2020, Vol. 27 ›› Issue (6): 120-126.DOI: 10.3969/j.issn.1006-6535.2020.06.017

低渗透稠油微波原位加热开采数值模拟研究

李小刚¹, 朱静怡^1,2, 杨兆中¹, 谢诗意¹, 贾敏¹

1.西南石油大学油气藏地质及开发工程国家重点实验室,四川成都 610500;
2.西南石油大学化学化工学院,四川成都 610500

收稿日期:2020-06-10 修回日期:2020-08-27 出版日期:2020-12-25 发布日期:2022-02-18
通讯作者: 朱静怡(1991—),女,2014年毕业于西南石油大学石油工程专业,2020年毕业于该校油气田开发工程专业,获博士学位,现从事油田化学工作液的研发与应用工作。
作者简介:李小刚(1981—),男,教授,2003年毕业于西南石油学院石油工程专业,2009年毕业于西南石油大学油气田开发工程专业,获博士学位,现从事油气增产改造理论、技术和非常规天然气开发研究工作。
基金资助:
国家科技重大专项“多层复杂煤体结构区煤储层直井压裂技术研究”(2016ZX044-004-002);西南石油大学“启航计划”基金“纳米材料辅助微波加热条件下油页岩热解规律研究”(2015QHZ006)

Numerical Simulation Research on Microwave In-situ Heating Technology for Developing Heavy Oil in Low-permeability Reservoirs

Li Xiaogang¹, Zhu Jingyi^1,2, Yang Zhaozhong¹, Xie Shiyi¹, Jia Min¹

1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
2. College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China

Received:2020-06-10 Revised:2020-08-27 Online:2020-12-25 Published:2022-02-18

摘要/Abstract

摘要： 针对低渗透稠油油藏开采过程中储层注入能力低、热损失高、水资源消耗大等问题,采用数值模拟对微波加热稠油开采技术进行研究,通过建立电磁-传热-流动多物理场模型,明确了微波加热稠油的降黏作用和传热机理。研究结果表明:稠油油藏微波加热后可分为电磁穿透区、多孔介质传导区和未加热区3个区域;最佳辐射频率为2 450 MHz,增加功率可快速提高地层温度;为了避免井筒附近出现过热现象,应采用降功率的阶梯式加热模式;水力压裂裂缝可有效改善低渗透油藏的渗流通道,可与微波加热协同开采稠油油藏。该研究可为低渗透及高黏度稠油的开发提供借鉴。

关键词: 低渗稠油油藏, 微波加热, 数值模拟, 多物理场, 水力压裂裂缝, 开采机理, 影响因素

Abstract: In the exploitation of low-permeability heavy oil reservoirs, aiming at the problems such as low reservoir injection capacity, high heat loss, and large water consumption, etc., numerical simulation technique was used to study the microwave heating technology for developing heavy oil. Through establishing multiple physical field models such as electromagnetic field model, heat transfer field model, and flow field model, the heavy oil viscosity reduction effect and heat transfer mechanism of microwave radiation was clarified. The research results show that after microwave heating, heavy oil reservoirs can be divided into three zones, namely electromagnetic penetration zone, conduction zone in porous media and unheated zone; the best radiation frequency is 2 450 MHz, and increasing power can quickly increase the formation temperature; in order to avoid overheating around the wellbore, a stepped heating mode with gradual power reduction should be adopted; hydraulic fractures can effectively improve the seepage channels of low-permeability reservoirs, and it can be used in conjunction with microwave heating to develop heavy oil reservoirs. This research can provide a reference for developing low-permeability and high-viscosity heavy oil.

Key words: low-permeability heavy oil reservoir, microwave heating, numerical simulation, multiple physical field, hydraulic fracture, exploitation mechanism, influencing factor

中图分类号:

TE349

李小刚, 朱静怡, 杨兆中, 谢诗意, 贾敏. 低渗透稠油微波原位加热开采数值模拟研究[J]. 特种油气藏, 2020, 27(6): 120-126.

Li Xiaogang, Zhu Jingyi, Yang Zhaozhong, Xie Shiyi, Jia Min. Numerical Simulation Research on Microwave In-situ Heating Technology for Developing Heavy Oil in Low-permeability Reservoirs[J]. Special Oil & Gas Reservoirs, 2020, 27(6): 120-126.

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低渗透稠油微波原位加热开采数值模拟研究

Numerical Simulation Research on Microwave In-situ Heating Technology for Developing Heavy Oil in Low-permeability Reservoirs

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