二氧化碳气体辅助SAGD物理模拟实验

doi:10.7623/syxb201406012

石油学报 ›› 2014, Vol. 35 ›› Issue (6): 1147-1152.DOI: 10.7623/syxb201406012

二氧化碳气体辅助SAGD物理模拟实验

张运军¹, 沈德煌¹, 高永荣¹, 李军辉², 李杰², 刘岩¹

1. 中国石油勘探开发研究院提高石油采收率国家重点实验室北京 100083;
2. 中国石油辽河油田公司锦州采油厂辽宁凌海 121209

收稿日期:2014-05-11 修回日期:2014-09-07 出版日期:2014-11-25 发布日期:2014-10-13
通讯作者: 张运军,男,1982年3月生,2005年毕业于北京大学信息管理与信息系统专业,现为中国石油勘探开发研究院热力采油研究所工程师,主要从事稠油热采基础理论研究以及新技术新方法的研发。Email:zhyuju119@petrochina.com.cn
作者简介:张运军,男,1982年3月生,2005年毕业于北京大学信息管理与信息系统专业,现为中国石油勘探开发研究院热力采油研究所工程师,主要从事稠油热采基础理论研究以及新技术新方法的研发。Email:zhyuju119@petrochina.com.cn
基金资助:
国家重大科技专项(2011ZX05012-001)资助。

Physical simulation experiments on CO₂ injection technology during steam assisted gravity drainage process

Zhang Yunjun¹, Shen Dehuang¹, Gao Yongrong¹, Li Junhui², Li Jie², Liu Yan¹

1. State Key Laboratory of Enhanced Oil Recovery, PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China;
2. Jinzhou Oil Production Plant, PetroChina Liaohe Oilfield Company, Liaoning Linghai 121209, China

Received:2014-05-11 Revised:2014-09-07 Online:2014-11-25 Published:2014-10-13

摘要/Abstract

摘要：

为进一步提高蒸汽辅助重力泄油(SAGD)的开发效果,针对辽河油田杜84块馆陶组超稠油油藏SAGD开采的现状,采用二维物理模拟技术,开展了通过添加CO₂气体改善SAGD开发效果的机理及技术可行性实验。实验研究结果表明:CO₂气体辅助SAGD开发杜84块馆陶组超稠油油藏在技术上是可行的,超稠油SAGD过程中添加的CO₂气体具有非凝析气和溶剂的双重作用机理;从CO₂气体辅助SAGD实验的温度场发育数据来看,CO₂气体有利于SAGD蒸汽腔的侧向扩展,增加蒸汽的横向波及体积;添加的CO₂气体使SAGD的采收率、油/汽比及采油速度都明显提高。同时,进一步研究了添加的CO₂气体量对SAGD开发效果的影响程度,初步优化出CO₂气体与蒸汽的最佳注入比例为20 %。

关键词: 超稠油油藏, 二氧化碳, 蒸汽辅助重力泄油, CO₂气体辅助, 物理模拟

Abstract:

This study aimed to further improve the development effect of steam assisted gravity drainage (SAGD) in consideration of the current development situation of extra-heavy oil reservoir in the Guantao Formation in Du84 Block of Liaohe oilfield, China. Two-dimension physical simulation experiments were carried out to improve the production mechanism and feasibility of SAGD process through CO₂ injection. The results showed that it was feasible to apply CO₂-assisted SAGD for the development of extra-heavy oil reservoir in the Guantao Formation. The injected CO₂ had a dual effect of non-condensate gas and solvent during SAGD process of extra-heavy oil reservoir. According to the analysis of temperature field data, CO₂ injection contributed to lateral expansion of SAGD steam chamber and increased the transverse wave and volume of steam. Additionally, CO₂ injection significantly improved reservoir recovery factor, oil steam ratio, and oil production rate of SAGD. The influence of CO₂ amount on SAGD development was further analyzed, and the CO₂-to-steam injection ratio was preliminarily optimized to be 20 %.

Key words: extra-heavy oil reservoir, carbon dioxide, steam assisted gravity drainage, CO₂ assisted, physical simulation

中图分类号:

TE357.4

张运军, 沈德煌, 高永荣, 李军辉, 李杰, 刘岩. 二氧化碳气体辅助SAGD物理模拟实验[J]. 石油学报, 2014, 35(6): 1147-1152.

Zhang Yunjun, Shen Dehuang, Gao Yongrong, Li Junhui, Li Jie, Liu Yan. Physical simulation experiments on CO₂ injection technology during steam assisted gravity drainage process[J]. ACTA PETROLEI SINICA, 2014, 35(6): 1147-1152.

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二氧化碳气体辅助SAGD物理模拟实验

Physical simulation experiments on CO₂ injection technology during steam assisted gravity drainage process

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二氧化碳气体辅助SAGD物理模拟实验

Physical simulation experiments on CO2 injection technology during steam assisted gravity drainage process

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Physical simulation experiments on CO₂ injection technology during steam assisted gravity drainage process