特低渗—致密油藏增能渗吸开发效果及实践

doi:10.3969/j.issn.1006-6535.2026.04.014

特种油气藏 ›› 2026, Vol. 33 ›› Issue (4): 105-113.DOI: 10.3969/j.issn.1006-6535.2026.04.014

特低渗—致密油藏增能渗吸开发效果及实践

曹豹¹, 谢坤², 卢祥国², 闻国峰³, 陈琦³

1.中海石油(中国)有限公司海南分公司,海南海口 570311;
2.东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆 163318;
3.中国石油大港油田分公司石油工程研究院,天津 300280

收稿日期:2024-10-31 修回日期:2026-06-19 出版日期:2026-08-25 发布日期:2026-10-15
通讯作者: 谢坤(1991—),男,教授,2013年毕业于东北石油大学石油工程专业,2019年毕业于该校石油与天然气工程专业,获博士学位,现主要从事提高油气采收率理论与技术方面的教学和研究工作。
作者简介:曹豹(1992—),男,高级工程师,2013年毕业于东北石油大学海洋油气工程专业,2022年毕业于该校石油与天然气工程专业,获博士学位,现主要从事油气田开发生产方面的研究工作。
基金资助:
国家自然科学基金“高矿化度油藏智能响应微凝胶构建及时变液流转向机制研究”(52204037);黑龙江省自然科学优秀青年基金“非均质致密油藏渗吸采油效果与表面活性剂性能适配机制及界限研究”(YQ2024E011)

Development performance and practice of energized imbibition in an ultra-low permeability and tight oil reservoir

Cao Bao¹, Xie Kun², Lu Xiangguo², Wen Guofeng³, Chen Qi³

1. Hainan Branch of CNOOC Ltd.,Haikou,Hainan 570311,China;
2. Key Laboratory of EOR,Ministry of Education,Northeast Petroleum University,Daqing,Heilongjiang 163318,China;
3. Petroleum Engineering Research Institute,PetroChina Dagang Oilfield Company,Tianjin 300280,China

Received:2024-10-31 Revised:2026-06-19 Online:2026-08-25 Published:2026-10-15

摘要/Abstract

摘要： 针对特低渗—致密油藏注水增能渗吸效果差异大、开发技术对策不明确等问题,采用离散裂缝模型,考虑拟启动压力梯度和应力敏感效应,研究不同类型储层注水增能渗吸开发技术界限和不同缝网形式、注入参数下特低渗—致密油藏开发效果。结果表明:特低渗—致密储层可划分为3类(Ⅲ、Ⅳ、Ⅴ类),储层物性依次变差,其中,Ⅲ类储层宜采取体积压裂+增能驱替开发方式,Ⅳ类储层宜采取体积压裂+增能驱替或体积压裂+增能吞吐开发方式,连通性较差储层或Ⅴ类储层宜采取体积压裂+增能吞吐开发方式;特低渗—致密油藏增能渗吸推荐开发参数为多级体积压裂、注液量为15 000 m³、闷井时间为8~14 d、吞吐3周期。大港油田特低渗—致密储层开展了体积压裂+增能驱替和体积压裂+增能吞吐矿场试验,注采井组2a内累计增油量超6 000.00 t,吞吐井300 d累计产油量超3 800.00 t,增产效果显著。研究成果可为类似油藏开发提供技术支撑和矿场实践指导。

关键词: 特低渗—致密油藏, 增能渗吸, 复杂裂缝, 闷井时间, 注入量, 注入周期

Abstract: To address the large variability in effectiveness of water-injection energized imbibition in an ultra-low permeability and tight oil reservoir and the unclear development-technology strategies,a discrete fracture model was used,and pseudo threshold pressure-gradient and stress-sensitivity effects were considered.The technical boundaries for water-injection energized imbibition in different reservoir types and the development performance of an ultra-low permeability and tight oil reservoir under different fracture-network forms and injection parameters were investigated.Results indicate that ultra-low permeability and tight reservoirs can be classified into three types(Type Ⅲ,Type IV,and Type V),with reservoir properties progressively deteriorating.Type Ⅲ reservoirs are suitable for volume fracturing+energized displacement;Type IV reservoirs are suitable for volume fracturing+energized displacement or volume fracturing+energized huff-and-puff;reservoirs with poor connectivity or Type V reservoirs are suitable for volume fracturing+energized huff-and-puff.Recommended parameters for energized imbibition in an ultra-low permeability and tight oil reservoir include multi-stage volume fracturing,an injection volume of 15 000 m³,a shut-in time of 8-14 days,and 3 huff-and-puff cycles.Field tests of volume fracturing+energized displacement and volume fracturing+energized huff-and-puff are conducted in ultra-low permeability and tight reservoirs in Dagang Oilfield,the cumulative incremental oil production of injection-production well groups exceeds 6000.00 t within 2 years, and the cumulative oil production of huff-and-puff wells exceeds 3800.00 t over 300 days, showing significant stimulation effects.These results can provide technical support and field-practice guidance for development of analogous reservoirs.

Key words: ultra-low permeability and tight oil reservoirs, energized imbibition, complex fractures, shut-in time, injection volume, injection cycles

中图分类号:

TE357

曹豹, 谢坤, 卢祥国, 闻国峰, 陈琦. 特低渗—致密油藏增能渗吸开发效果及实践[J]. 特种油气藏, 2026, 33(4): 105-113.

Cao Bao, Xie Kun, Lu Xiangguo, Wen Guofeng, Chen Qi. Development performance and practice of energized imbibition in an ultra-low permeability and tight oil reservoir[J]. Special Oil & Gas Reservoirs, 2026, 33(4): 105-113.

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特低渗—致密油藏增能渗吸开发效果及实践

Development performance and practice of energized imbibition in an ultra-low permeability and tight oil reservoir

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