再论CO2驱提高采收率油藏工程理念和开发模式的发展

doi:10.13809/j.cnki.cn32-1825/te.2020.03.001

摘要/Abstract

摘要：

自上世纪70年代以来,CO₂驱提高采收率技术在油藏工程理念上已形成连续CO₂注入、恒定比例C-WAG（Constant Water-Alternating-Gas）注入、梯度/混合-WAG注入（Tapered/Hybrid WAG Injection）以及SWG（Simultaneous Water and Gas）或SSWG（Simultaneous Separated Water and Gas）注入等多种开发模式。CO₂之所以成为极具活力的提高采收率注入气,得益于其所特有的超临界流体特征和显著的溶剂化能力。在对CO₂主要的具有优势的驱油机理以及国内外典型CO₂驱提高采收率油藏工程理念和开发模式分析基础上,结合国内外不同类型油气藏的开发特征,特别是水平井技术、低渗油气藏体积压裂技术的成功应用经验,以及与CCUS（Carbon Capture, Utilization and Storage）一体化的CO₂CCUS-EOR（Carbon Capture, Utilization and Storage-Enhanced Oil Recovery）的综合利用理念,进一步对国内CO₂驱提高采收率油藏工程开发模式的发展提出建议,以期能为促进国内CO₂驱提高采收率技术的规模化发展提供启示。

关键词: 提高采收率, 超临界CO₂, 开发理念, 开发模式, CCUS-EOR

Abstract:

Since the 1970s, CO₂ flooding-EOR technology has formed multiple development modes in the concept of reservoir engineering, including continuous CO₂ injection, WAG injection with constant proportion, tapered/hybrid WAG injection and SWG/SSWG injection. The reason why CO₂ become the injection gas for tertiary oil recovery with great vitality benefits from its supercritical fluid characteristics and remarkable solvation capacity. Based on the analysis of the main oil displacement mechanism of CO₂ and the reservoir engineering concept and development mode of typical CO₂ flooding-EOR technology at home and abroad in recent years, and considering their development characteristics of different types of reservoirs, especially the successful application of horizontal well technology and low permeability reservoir volume fracturing technology, as well as the comprehensive utilization concept of CO₂ CCUS-EOR combined with CCUS concept, further suggestions are put forward for the development of reservoir engineering development mode by CO₂ flooding-EOR technology in China, so as to provide enlightenment for further promoting its large-scale development.

Key words: enhanced oil recovery, supercritical CO₂, development concept, development mode, CCUS-EOR

中图分类号:

TE122

李士伦,孙雷,陈祖华等. 再论CO₂驱提高采收率油藏工程理念和开发模式的发展[J]. 油气藏评价与开发, 2020, 10(3): 1-14.

Shilun LI,Lei SUN,Zuhua CHEN, et al. Further discussion on reservoir engineering concept and development mode of CO₂ flooding-EOR technology[J]. Reservoir Evaluation and Development, 2020, 10(3): 1-14.

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油田	启动年份	油藏温度/ ℃	储层物性		流体物性		规模井组	驱替类型	注气开发模式
油田	启动年份	油藏温度/ ℃	渗透率/ ×10^-3 μm²	孔隙度/ %	地层油密度/ （g·cm^-3）	地层油黏度/ （mPa·s）	规模井组	驱替类型	注气开发模式
大庆芳48	2003	85.9	1.40	14.50	0.805	6.60	1	非混相	间歇
华东草舍油田	2005	119.0	23.00	14.08	0.883	12.83	5	混相	连续-SWAG
吉林红87-2井组	2006	108.5	0.36	10.00	0.737	1.76	1		连续
大庆芳48断块	2007	85.9	1.40	14.50	0.805	6.60	15	非混相	连续
大庆树101	2007	108.0	1.06	10.40	0.790	3.60	11	近混相	超前+周期
胜利高89	2007	110.0	4.70	13.00	0.739	1.59	5	近混相	连续
吉林黑59块	2008	97.0	2.65	11.44	0.762	1.86	7	混相	连续+WAG
中原濮城沙一	2008		690.00	22.00	0.760	<2.00	12	混相	WAG
冀东高浅北柳北等	2008	65.0	2 121.00	31.00	0.911	90.34	600井次	非混相	水平井协同吞吐控水增油
吉林黑79块	2009	103.0	10.00	12.00	0.770	1.80	18	混相	连续
腰英台油田	2010	103.0	5.00~10.00	12.00	0.770	2.00	>40	非混相	连续-WAG

再论CO₂驱提高采收率油藏工程理念和开发模式的发展

Further discussion on reservoir engineering concept and development mode of CO₂ flooding-EOR technology

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