苏北盆地江苏油田CO2驱油技术进展及应用

doi:10.13809/j.cnki.cn32-1825/te.2024.01.003

摘要/Abstract

摘要：

CCUS（碳捕集、利用与封存）技术对绿色低碳转型、实现“双碳”目标意义重大，而CO₂驱油埋存是其重要内容。苏北盆地江苏油田针对复杂断块油藏提高采收率的技术瓶颈开展CO₂驱油技术攻关及多种类型矿场试验，形成了以重力稳定驱、驱吐协同等为特点的复杂断块油藏CO₂驱油的4种差异化模式，成功开展了花26断块“仿水平井”重力稳定驱等技术先导试验，建成了10×10⁴t的复杂断块油藏CCUS示范工程。江苏油田累计注入液碳量30.34×10⁴t，累计增油量9.83×10⁴t，实现了较好的增产效果及经济效益。技术研究及试验可为其他复杂断块油藏的CO₂驱开发提供参考借鉴。

关键词: 复杂断块, CO₂驱油模式, 重力稳定驱, 提高采收率, CO₂封存

Abstract:

CCUS（Carbon capture, Utilization and Storage） technology is of great significance to the green and low-carbon transformation and the realization of the “dual carbon” goal, It includes important strategies like CO₂ enhanced oil recovery（EOR） and sequestration. Jiangsu Oilfield has been focusing on CO₂ EOR to improve recovery rates in the challenging fault block reservoirs of the Subei Basin. The company has developed four unique CO₂ EOR models suitable for these complex reservoirs, featuring techniques like gravity-stable displacement. A notable achievement is the successful pilot of the methods such as “simulated horizontal well” GAGD technology in Hua-26 fault block, which led to the one hundred thousand CCUS project tailored for such reservoirs. According to statistics, Jiangsu Oilfield has injected a total of 30.34×10⁴ t of liquid CO₂, with a cumulative oil increase of 9.83×10⁴ t, realizing a better production increase and economic benefits. These technical researches and tests can provide valuable insights for applying CO₂ EOR in similar complex reservoirs.

Key words: complex fault block, CO₂ displacement mode, gas-assisted gravity drainage（GAGD）, enhanced oil recovery, CO₂ storage

中图分类号:

TE357

唐建东, 王智林, 葛政俊. 苏北盆地江苏油田CO₂驱油技术进展及应用[J]. 油气藏评价与开发, 2024, 14(1): 18-25.

TANG Jiandong, WANG Zhilin, GE Zhengjun. CO₂ flooding technology and its application in Jiangsu Oilfield in Subei Basin[J]. Petroleum Reservoir Evaluation and Development, 2024, 14(1): 18-25.

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序号	类型	吞吐井	措施类型	注入量/t	增产原油/t
1	低产液	桥7平1	CO₂吞吐	3 364	4 307
2	高含水	沙49平1	CO₂吞吐	705	473
3	稠油	周43平11	复合吞吐	气95 t+降黏剂3 t	536
总计				4 167	5 316

苏北盆地江苏油田CO₂驱油技术进展及应用

CO₂ flooding technology and its application in Jiangsu Oilfield in Subei Basin

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