[1]敖文君,孔丽萍,王成胜,等.高含水油藏注气驱提高采收率技术研究[J].复杂油气藏,2016,(04):52.[doi:10.16181/j.cnki.fzyqc.2016.04.012]
　Ao Wenjun,Kong Liping,Wang Chengsheng,et al.Study on enhanced oil recovery in high water-cut reservoir by gas flooding[J].Complex Hydrocarbon Reservoirs,2016,(04):52.[doi:10.16181/j.cnki.fzyqc.2016.04.012]
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高含水油藏注气驱提高采收率技术研究
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
期数:
2016年04期
页码:
52
栏目:
油气开发
出版日期:
2016-12-25

文章信息/Info

Title:
Study on enhanced oil recovery in high water-cut reservoir by gas flooding
作者:
敖文君1; 孔丽萍1; 王成胜1; 2; 陈士佳1; 2; 田津杰1; 阚 亮1
1.中海油能源发展股份有限公司工程技术分公司,天津 300452; 2.海洋石油高效开发国家重点实验室,北京 100027
Author(s):
Ao Wenjun1; Kong Liping1; Wang Chengsheng1; 2; Chen Shijia1; 2; Tian Jinjie1; Kan Liang1
1.CNOOC EnerTech-Drilling & Production Co.,Tianjin 300452,China; 2.Key EOR laboratory of CNOOC,Beijing 100027,China
关键词:
原油物性 CO2驱 富气驱 驱替效率 轻质油藏
Keywords:
physical property;  CO2 flooding;  enriched-gas flooding;  efficiency of displacement;  light oil reservoir
分类号:
TE357.7
DOI:
10.16181/j.cnki.fzyqc.2016.04.012
文献标志码:
A
摘要:
针对高含水中后期油藏以及注水困难的水敏油藏难以实现高效开发与持续稳产的问题,通过PVT釜高压物性实验与长细管驱替实验进行了注富气与CO2驱提高采收率室内评价研究。实验对原油进行了PVT高压物性分析,研究了注入不同摩尔分数比例的CO2和富气时,原油饱和压力、降黏效果和膨胀能力的变化规律,并对比分析采用连续注气与交替注气下,高含水油藏的驱油效果。长细管实验对比分析了注CO2和富气在原油中的最小混相压力及混相驱替效率,CO2在原油中的最小混相压力为14.27 MPa,富气在原油中的混相压力为34.74 MPa。对原油物性与驱油效率的分析表明,注富气可以较好地提高轻质油藏原油的采收率。与水驱相比,采用连续注气与交替注入,富气驱均可以提高采收率28%以上,且交替注入的效果更好。
Abstract:
The PVT high pressure physical properties of crude oil were tested and analyzed.When various mole fraction proportional CO2 and enriched-gas were injected,it was studied on the change rules in the oil saturation pressure,the viscosity-reducing effect,and the swelling capacity.And the displacement effect of high water-cut oil reservoir was comparatively analyzed under the condition of continuous and water altering gas injections.The research results showed that under the condition of same injected gas volume,compared with CO2 injection,the enriched-gas injection increased the oil saturation pressure,but greatly reduce the crude oil viscosity and improve the swelling capacity.Therefore the enriched-gas injection can improve the physical properties of crude oil better.Though the long slim tube experiments,it was comparatively analyzed the minimum miscible pressure(MMP)and miscible flooding efficiency of injected CO2 and enriched-gas.The MMP of CO2 and enriched-gas in the crude oil are 14.27 MPa and 34.74 MPa,respectively.The analyses on the physical properties of crude oil and the oil displacement efficiency showed that the enriched-gas flooding could very well enhance oil recovery of light oil reservoir,but for different reservoir characteristics,the effect of enriched-gas flooding on the bubble point pressure should be considered in the process of enriched-gas injection.Compared with water flooding,the enriched-gas flooding can enhance the oil recovery rate of more than 28% with continuous and water altering gas injections,and the effect of water altering gas injection was better

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备注/Memo

备注/Memo:
收稿日期:2016-07-14; 改回日期:2016-08-22。
作者简介:敖文君(1989—),工程师,现从事提高采收率技术研究工作,电话:13323350217,E-mail:wenjunao@126.com。
基金项目::中国海洋石油总公司“海上典型底水稠油油藏热采配套工艺技术研究”(CNOOC-KJ 125 2011ZX05024 NFCJF 2012-03); 国家自然科学基金项目“CO2在多孔介质中的扩散速度与前缘位置的研究”(51274217)。
更新日期/Last Update: 2016-12-25