鄂尔多斯盆地庆城页岩油开发动态规律及稳产技术

doi:10.7623/syxb202504005

石油学报 ›› 2025, Vol. 46 ›› Issue (4): 726-742.DOI: 10.7623/syxb202504005

• 油田开发 • 上一篇

鄂尔多斯盆地庆城页岩油开发动态规律及稳产技术

樊建明^1,2, 张超^1,2, 常睿^1,2, 何右安^1,2, 冯立勇³, 任奕霖^1,2, 曹鹏^1,2, 关云^1,2

1. 中国石油长庆油田公司勘探开发研究院陕西西安 710018;
2. 低渗透油气田勘探开发国家工程实验室陕西西安 710018;
3. 中国石油长庆油田公司页岩油开发分公司甘肃庆阳 745000

收稿日期:2024-05-21 修回日期:2024-12-08 发布日期:2025-05-10
通讯作者: 常睿,女,1994年7月生,2017年获中国石油大学(北京)硕士学位,现为中国石油长庆油田公司勘探开发研究院工程师,主要从事页岩油开发研究工作。Email:chrui_cq@petrochina.com.cn
作者简介:樊建明,男,1976年11月生,2008年获西南石油大学博士学位,现为中国石油长庆油田公司勘探开发研究院正高级工程师,主要从事页岩油开发研究工作。Email:fanjm_cq@petrochina.com.cn
基金资助:
中国石油天然气股份有限公司攻关性应用性科技专项“陆相页岩油开发优化技术研究与试验”(2023ZZ15YJ03)和中国石油长庆油田公司重大专项“鄂尔多斯盆地页岩油渗流机理及有效开发关键技术研究”(2023DZZ04)资助。

Dynamic laws and stable production technology of Q ingcheng shale oil development in Ordos Basin

Fan Jianming^1,2, Zhang Chao^1,2, Chang Rui^1,2, He You'an^1,2, Feng Liyong³, Ren Yilin^1,2, Cao Peng^1,2, Guan Yun^1,2

1. Research Institute of Exploration and Development, PetroChina Changqing Oilfield Company, Shaanxi Xi'an 710018, China;
2. National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields, Shaanxi Xi'an 710018, China;
3. Shale Oil Development Branch, PetroChina Changqing Oilfield Company, Gansu Qingyang 745000, China

Received:2024-05-21 Revised:2024-12-08 Published:2025-05-10

摘要/Abstract

摘要： 基于鄂尔多斯盆地页岩油水平井体积开发实践,采用室内研究和矿场生产数据分析相结合的方法,系统总结了页岩油水平井整体的递减规律和不同类型储层单井预计最终可采储量的差异,不同开发阶段的含水、含盐、压力、气油比、水平井段间出液变化规律。在此基础上,形成了“合理焖井促平衡、初期控排防出砂、稳压生产保能量”的生产制度和“冲砂、清蜡、清垢、控气、防偏磨”的治理技术及配套工艺。页岩油水平井在一次补能开发条件下,Ⅰ类、Ⅱ₁类储层平均单井预计最终可采储量分别为3.0×10⁴t以上和约2.4×10⁴t,实现了规模效益开发。同时,针对中、后期页岩油水平井单井产量低和进一步提高页岩油采收率的需求,在前期矿场实施效果分析的基础上,结合油藏数值模拟研究,提出了老区水平井重复压裂造新缝的方式来提高单井预计最终可采储量和采收率,预测可提高采收率5%以上。

关键词: 鄂尔多斯盆地, 庆城油田, 页岩油, 开发规律, 稳产技术

Abstract: Based on the development practice of volumetric fracturing in shale oil horizontal wells in Ordos Basin, and the method of combining laboratory research and field production data analysis, the paper systematically summarizes the overall production decline law of shale oil horizontal wells and differences in the estimated ultimate recovery (EUR)of single well in different types of reservoirs, as well as the variation patterns of water content, salinity, pressure, gas-oil ratio and liquid production in horizontal well intervals during different development stages. On this basis, a production system featuring "reasonable shut-in periods to promote reservoir equilibrium, controlled flowback for sand control in early stage, and pressure-stabilized production to preserve reservoir energy" has been developed, along with a suit of remediation technologies and processes including "sand washing, wax removal, scale removal, gas content control, and eccentric wear prevention". Under the primary energy replenishment development in shale oil horizontal wells, Type Ⅰ and Ⅱ₁ reservoirs demonstrate the average estimated ultimate recovery (EUR)of over 3.0×10⁴ t and approximately 2.4×10⁴ t per well, respectively, achieving economically viable large-scale development. Besides, in response to the problem of low single-well production in mid-to-late development stages of shale oil horizontal wells and the demand for enhanced oil recovery (EOR), the method of refracturing in existing horizontal wells in mature areas to create new fractures is proposed to increase EUR and EOR of single well, which is built based on preliminary field implementation analysis in combination with numerical simulation studies on reservoirs, and is predicted to increase the recovery rate by more than 5 %.

Key words: Ordos Basin, Qingcheng oilfield, shale oil, development law, stable production technology

中图分类号:

TE349

樊建明, 张超, 常睿, 何右安, 冯立勇, 任奕霖, 曹鹏, 关云. 鄂尔多斯盆地庆城页岩油开发动态规律及稳产技术[J]. 石油学报, 2025, 46(4): 726-742.

Fan Jianming, Zhang Chao, Chang Rui, He You'an, Feng Liyong, Ren Yilin, Cao Peng, Guan Yun. Dynamic laws and stable production technology of Q ingcheng shale oil development in Ordos Basin[J]. Acta Petrolei Sinica, 2025, 46(4): 726-742.

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鄂尔多斯盆地庆城页岩油开发动态规律及稳产技术

Dynamic laws and stable production technology of Q ingcheng shale oil development in Ordos Basin

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