考虑可动泄油面的SAGD蒸汽腔前缘温度分布计算新方法

何旭鵁; 庞占喜; 薛端; 张程光; 韩睿婧

doi:10.3969/j.issn.1006-6535.2026.02.013

特种油气藏 >

2026 , Vol. 33 >Issue 2: 117 - 125

DOI: https://doi.org/10.3969/j.issn.1006-6535.2026.02.013

油藏工程

考虑可动泄油面的SAGD蒸汽腔前缘温度分布计算新方法

何旭鵁 ,
庞占喜 ,
薛端 ,
张程光 ,
韩睿婧

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1.油气资源与工程全国重点实验室,北京 102249;
2.中国石油勘探开发研究院,北京 100083;
3.中国石油大学石油工程教育部重点实验室,北京 102249;
4.中国石油天然气集团有限公司,北京 100007

何旭鵁(1981—),女,高级工程师,2004年毕业于中央民族大学外国语学院俄语专业,现为中国石油大学(北京)油气田开发工程专业在读博士研究生,主要从事石油标准化研究方面的工作。

收稿日期: 2025-02-28

修回日期: 2026-01-25

网络出版日期: 2026-07-30

基金资助

国家自然基金面上项目“多孔介质中纳米颗粒与发泡剂协同构建Pickering泡沫机制及其运移规律”(52074321)

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A new method for calculating temperature distribution at the steam-chamber front in SAGD considering a mobile oil drainage surface

HE Xujiao ,
PANG Zhanxi ,
XUE Duan ,
ZHANG Chengguang ,
HAN Ruijing

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1. State Key Laboratory of Petroleum Resources and Engineering,China University of Petroleum(Beijing),Beijing 102249,China;
2. PetroChina Research Institute of Petroleum Exploration & Development,Beijing 100083,China;
3. Key Laboratory of Petroleum Engineering,Ministry of Education,China University of Petroleum(Beijing),Beijing 102249,China;
4. PetroChina Company Limited,Beijing 100007,China

Received date: 2025-02-28

Revised date: 2026-01-25

Online published: 2026-07-30

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摘要

针对具有顶水的稠油油藏SAGD开发过程中蒸汽腔前缘传热规律与温度分布难以量化的问题,基于SAGD传热模型,按照稠油拐点温度前后原油可流动特性的变化规律,将蒸汽腔前缘以外的油层分为可动油和不可动油2个区域,依据一维非稳态导热方程及动边界条件,建立SAGD开发蒸汽腔前缘的温度分布计算新模型,最终形成顶水稠油油藏SAGD开发蒸汽腔与顶水层之间极限油层厚度以及氮气隔热层厚度的计算方法。研究表明:辽河油田杜84块SAGD生产15 a时,汽腔顶部距离顶水层底界的极限厚度为17.60 m;当氮气层厚度达到3.29 m时,氮气隔热措施可维持油层顶部温度,使其低于拐点温度。该方法可为具有顶水的稠油油藏长期有效开发以及SAGD辅助流体增产技术的应用提供理论指导。

关键词： 稠油; SAGD; 蒸汽腔前缘; 温度分布; 极限油藏厚度; 氮气隔热层厚度

本文引用格式

何旭鵁 , 庞占喜 , 薛端 , 张程光 , 韩睿婧 . 考虑可动泄油面的SAGD蒸汽腔前缘温度分布计算新方法[J]. 特种油气藏, 2026 , 33(2) : 117 -125 . DOI: 10.3969/j.issn.1006-6535.2026.02.013

Abstract

To overcome the difficulty in quantifying heat-transfer laws and temperature distribution at the steam-chamber front during SAGD in heavy-oil reservoirs with top water,based on a SAGD heat-transfer model and according to the change in crude-oil flowability before and after the heavy-oil temperature inflection point,the oil zone outside the steam-chamber front was divided into two regions:mobile oil and immobile oil.Based on the one-dimensional transient heat-conduction equation and moving boundary conditions,a new model was established for calculating temperature distribution at the steam-chamber front during SAGD,and a calculation method was further developed for the critical oil-zone thickness between the steam chamber and the top-water layer as well as the nitrogen insulation-layer thickness.Results show that when Du 84 Block in the Liaohe Oilfield has been producing with SAGD(steam assisted gravity drainage)for 15 years,the critical thickness between the top of the steam chamber and the bottom boundary of the top-water layer is 17.60 m;when the nitrogen-layer thickness reaches 3.29 m,the nitrogen insulation measure can maintain the temperature at the top of the oil zone such that it remains lower than the temperature inflection point.This method can provide theoretical guidance for long-term effective development of heavy-oil reservoirs with top water and for applying SAGD-assisted fluid stimulation technologies.

Key words： heavy oil; SAGD; steam-chamber front; temperature distribution; critical reservoir thickness; nitrogen insulation-layer thickness

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