Practices and research for enhanced shale oil recovery in the Qingcheng oilfield, Ordos Basin
- Vol. 46, Issue 5, Pages: 1664-1681(2025)
Received:02 April 2025,
Revised:2025-07-03,
Published:30 October 2025
DOI: 10.11743/ogg20250517
移动端阅览

浏览全部资源
扫码关注微信
Received:02 April 2025,
Revised:2025-07-03,
Published:30 October 2025
移动端阅览
针对页岩油准自然能量开发中地层压力下降快、产量递减大导致的原油采收率低这一核心问题,长庆油田通过10余年的持续攻关,系统开展了理论探索、室内模拟、开发试验和规模应用研究,形成了针对新区和老区的差异化提高采收率技术体系。在新区开发方面,创新提出了“小井距 + 小簇距 + 大规模交错布缝”的井网-缝网协同优化技术;在老区改造方面,研发了“精细分段 + 大排量注气 + 结构化驱替”的多介质复合补能技术和区域补能重复压裂技术。研究结果表明:新区小井距开发模式可提高一次井网采收率4.0%以上,老区提采技术综合应用可提高采收率3.0% ~ 5.0%。通过新区和老区技术协同优化,预计可将鄂尔多斯盆地庆城页岩油藏的标定采收率由当前的7.5%提高至15.0%以上。研究成果能够为鄂尔多斯盆地及国内外类似页岩油藏提高采收率提供重要的理论依据与技术借鉴。
Shale oil production through quasi-natural depletion faces a key challenge of low crude oil recovery due to a rapid decline in reservoir pressure and a marked decrease in oil production. Over more than a decade of persistent efforts, the Changqing oilfield has carried out systematic theoretical research, laboratory simulations, pilot tests, and large-scale field applications. These initiatives have led to the development of differential enhanced oil recovery (EOR) techniques tailored to newly developed and mature blocks. Specifically, for newly developing blocks, an innovative well pattern-fracture network collaborative optimization technology is proposed, featuring “small well spacing, small cluster spacing, and large-scale cross fracturing design.” Techniques developed for the stimulation of mature blocks include a multi-media energy replenishment technique integrating “fine-scale division of injection intervals, high gas injection rates, and structured displacement” and a regional energy replenishment-based refracturing technique. The field application results of these techniques indicate that in newly developing blocks, the collaborative optimization technology can enhance shale oil recovery by more than 4% under the well pattern during primary recovery. For mature blocks, the integrated application of the EOR techniques can enhance shale oil recovery by 3% to 5%. The collaborative optimization of techniques for both newly developing and mature blocks is projected to increase the calibrated recovery of shale oil reservoirs in the Qingcheng oilfield, Ordos Basin, to over 15% from the present 7.5%. The results of this study provide an important theoretical basis and technical reference for EOR of shale oil reservoirs in the Ordos Basin and other similar reservoirs worldwide.
焦方正 , 邹才能 , 杨智 . 陆相源内石油聚集地质理论认识及勘探开发实践 [J]. 石油勘探与开发 , 2020 , 47 ( 6 ): 1067 - 1078 .
JIAO Fangzheng , ZOU Caineng , YANG Zhi . Geological theory and exploration & development practice of hydrocarbon accumulation inside continental source kitchens [J]. Petroleum Exploration and Development , 2020 , 47 ( 6 ): 1067 - 1078 .
金之钧 , 朱如凯 , 梁新平 , 等 . 当前陆相页岩油勘探开发值得关注的几个问题 [J]. 石油勘探与开发 , 2021 , 48 ( 6 ): 1276 - 1287 .
JIN Zhijun , ZHU Rukai , LIANG Xinping , et al . Several issues worthy of attention in current lacustrine shale oil exploration and development [J]. Petroleum Exploration and Development , 2021 , 48 ( 6 ): 1276 - 1287 .
李国欣 , 朱如凯 . 中国石油非常规油气发展现状、挑战与关注问题 [J]. 中国石油勘探 , 2020 , 25 ( 2 ): 1 - 13 .
LI Guoxin , ZHU Rukai . Progress, challenges and key issues of unconventional oil and gas development of CNPC [J]. China Petroleum Exploration , 2020 , 25 ( 2 ): 1 - 13 .
焦方正 . 陆相低压页岩油体积开发理论技术及实践——以鄂尔多斯盆地长7段页岩油为例 [J]. 天然气地球科学 , 2021 , 32 ( 6 ): 836 - 844 .
JIAO Fangzheng . Theoretical technologies and practices concerning “volume development” of low pressure continental shale oil: Case study of shale oil in Chang 7 member, Ordos Basin, China [J]. Natural Gas Geoscience , 2021 , 32 ( 6 ): 836 - 844 .
付锁堂 , 付金华 , 牛小兵 , 等 . 庆城油田成藏条件及勘探开发关键技术 [J]. 石油学报 , 2020 , 41 ( 7 ): 777 - 795 .
FU Suotang , FU Jinhua , NIU Xiaobing , et al . Accumulation conditions and key exploration and development technologies in Qingcheng Oilfield [J]. Acta Petrolei Sinica , 2020 , 41 ( 7 ): 777 - 795 .
郭旭升 , 马晓潇 , 黎茂稳 , 等 . 陆相页岩油富集机理探讨 [J]. 石油与天然气地质 , 2023 , 44 ( 6 ): 1333 - 1349 .
GUO Xusheng , MA Xiaoxiao , LI Maowen , et al . Mechanisms for lacustrine shale oil enrichment in Chinese sedimentary basins [J]. Oil & Gas Geology , 2023 , 44 ( 6 ): 1333 - 1349 .
王建 , 郭秋麟 , 赵晨蕾 , 等 . 中国主要盆地页岩油气资源潜力及发展前景 [J]. 石油学报 , 2023 , 44 ( 12 ): 2033 - 2044 .
WANG Jian , GUO Qiulin , ZHAO Chenlei , et al . Potentials and prospects of shale oil-gas resources in major basins of China [J]. Acta Petrolei Sinica , 2023 , 44 ( 12 ): 2033 - 2044 .
杨华 , 李士祥 , 刘显阳 . 鄂尔多斯盆地致密油、页岩油特征及资源潜力 [J]. 石油学报 , 2013 , 34 ( 1 ): 1 - 11 .
YANG Hua , LI Shixiang , LIU Xianyang . Characteristics and resource prospects of tight oil and shale oil in Ordos Basin [J]. Acta Petrolei Sinica , 2013 , 34 ( 1 ): 1 - 11 .
李志明 , 刘雅慧 , 何晋 译, 等 . 陆相页岩油“甜点”段评价关键参数界限探讨 [J]. 石油与天然气地质 , 2023 , 44 ( 6 ): 1453 - 1467 .
LI Zhiming , LIU Yahui , HE Jinyi , et al . Limits of critical parameters for sweet-spot interval evaluation of lacustrine shale oil [J]. Oil & Gas Geology , 2023 , 44 ( 6 ): 1453 - 1467 .
赵文智 , 刘伟 , 卞从胜 , 等 . 保存条件对陆相中高熟页岩油富集与流动性保持的作用 [J]. 石油勘探与开发 , 2025 , 52 ( 1 ): 1 - 14 .
ZHAO Wenzhi , LIU Wei , BIAN Congsheng , et al . Role of preservation conditions on enrichment and fluidity maintenance of medium to high maturity lacustrine shale oil [J]. Petroleum Exploration and Development , 2025 , 52 ( 1 ): 1 - 14 .
李明 , 王民 , 张金友 , 等 . 中国典型盆地陆相页岩油组分评价及意义 [J]. 石油与天然气地质 , 2023 , 44 ( 6 ): 1479 - 1498 .
LI Ming , WANG Min , ZHANG Jinyou , et al . Evaluation of the compositions of lacustrine shale oil in China’s typical basins and its implications [J]. Oil & Gas Geology , 2023 , 44 ( 6 ): 1479 - 1498 .
孙龙德 , 赵文智 , 刘合 , 等 . 页岩油 “甜点” 概念及其应用讨论 [J]. 石油学报 , 2023 , 44 ( 1 ): 1 - 13 .
SUN Longde , ZHAO Wenzhi , LIU He , et al . Concept and application of “sweet spot” for shale oil [J]. Acta Petrolei Sinica , 2023 , 44 ( 1 ): 1 - 13 .
李嘉成 , 邹家伟 , 田刚 , 等 . 基于地质工程一体化压裂模型的页岩油压裂方案优化——以吉木萨尔凹陷芦草沟组为例 [J]. 断块油气田 , 2025 , 32 ( 1 ): 35 - 46 .
LI Jiacheng , ZOU Jiawei , TIAN Gang , et al . Shale oil fracturing scheme optimization based on geology-engineering integrated fracturing model: Taking Lucaogou Formation, Jimsar Sag as an example [J]. Fault-Block Oil & Gas Field , 2025 , 32 ( 1 ): 35 - 46 .
ZHANG J J , FAN Zhihui . Key technologies for increasing production based on the best practices of major shale oil and gas basins [J]. Energy Geoscience , 2025 , 6 ( 3 ): 100414 .
何永宏 , 薛婷 , 李桢 , 等 . 鄂尔多斯盆地长7页岩油开发技术实践——以庆城油田为例 [J]. 石油勘探与开发 , 2023 , 50 ( 6 ): 1245 - 1258 .
HE Yonghong , XUE Ting , LI Zhen , et al . Development technologies for Triassic Chang 7 shale oil in Ordos Basin: A case study of Qingcheng Oilfield, NW China [J]. Petroleum Exploration and Development , 2023 , 50 ( 6 ): 1245 - 1258 .
付金华 , 王龙 , 陈修 , 等 . 鄂尔多斯盆地长7页岩油勘探开发新进展及前景展望 [J]. 中国石油勘探 , 2023 , 28 ( 5 ): 1 - 14 .
FU Jinhua , WANG Long , CHEN Xiu , et al . Progress and prospects of shale oil exploration and development in the seventh member of Yanchang Formation in Ordos Basin [J]. China Petroleum Exploration , 2023 , 28 ( 5 ): 1 - 14 .
袁士义 , 韩海水 , 王红庄 , 等 . 油田开发提高采收率新方法研究进展与展望 [J]. 石油勘探与开发 , 2024 , 51 ( 4 ): 841 - 854 .
YUAN Shiyi , HAN Haishui , WANG Hongzhuang , et al . Research progress and potential of new enhanced oil recovery methods in oilfield development [J]. Petroleum Exploration and Development , 2024 , 51 ( 4 ): 841 - 854 .
杨坤 , 杨胜来 , 刘新月 , 等 . 页岩油储层渗吸及CO 2 吞吐提高采收率——以吉木萨尔芦草沟组为例 [J]. 西安石油大学学报(自然科学版) , 2024 , 39 ( 5 ): 1 - 9 .
YANG Kun , YANG Shenglai , LIU Xinyue , et al . Enhancing oil recovery of shale oil reservoirs through spontaneous i mbibition and CO 2 huff-puff: A case study of Lucaogou Formation in Jimsar [J]. Journal of Xi'an Shiyou University (Natural Science Edition) , 2024 , 39 ( 5 ): 1 - 9 .
肖文联 , 陈神根 , 易勇刚 , 等 . 压裂液辅助二氧化碳吞吐提高页岩油采收率核磁共振实验 [J]. 新疆石油天然气 , 2024 , 20 ( 3 ): 83 - 90 .
XIAO Wenlian , CHEN Shengen , YI Yonggang , et al . NMR-based experiments of fracturing fluid assisted CO 2 huff-n-puff for enhancing shale oil recovery [J]. Xinjiang Oil & Gas , 2024 , 20 ( 3 ): 83 - 90 .
袁士义 , 雷征东 , 李军诗 , 等 . 陆相页岩油开发技术进展及规模效益开发对策思考 [J]. 中国石油大学学报(自然科学版) , 2023 , 47 ( 5 ): 13 - 24 .
YUAN Shiyi , LEI Zhengdong , LI Junshi , et al . Progress in technology for the development of continental shale oil and thoughts on the development of scale benefits and strategies [J]. Journal of China University of Petroleum (Edition of Natural Science) , 2023 , 47 ( 5 ): 13 - 24 .
赵喆 , 白斌 , 刘畅 , 等 . 中国石油陆上中-高成熟度页岩油勘探现状、进展与未来思考 [J]. 石油与天然气地质 , 2024 , 45 ( 2 ): 327 - 340 .
ZHAO Zhe , BAI Bin , LIU Chang , et al . Current status, advances, and prospects of CNPC’s exploration of onshore moderately to highly mature shale oil reservoirs [J]. Oil & Gas Geology , 2024 , 45 ( 2 ): 327 - 340 .
付金华 , 郭雯 , 李士祥 , 等 . 鄂尔多斯盆地长7段多类型页岩油特征及勘探潜力 [J]. 天然气地球科学 , 2021 , 32 ( 12 ): 1749 - 1761 .
FU Jinhua , GUO Wen , LI Shixiang , et al . Characteristics and exploration potential of muti-type shale oil in the 7th member of Yanchang Formation, Ordos Basin [J]. Natural Gas Geoscience , 2021 , 32 ( 12 ): 1749 - 1761 .
付金华 , 刘显阳 , 李士祥 , 等 . 鄂尔多斯盆地三叠系延长组长7段页岩油勘探发现与资源潜力 [J]. 中国石油勘探 , 2021 , 26 ( 5 ): 1 - 11 .
FU Jinhua , LIU Xianyang , LI Shixiang , et al . Discovery and resource potential of shale oil of Chang 7 member, Triassic Yanchang Formation, Ordos Basin [J]. China Petroleum Exploration , 2021 , 26 ( 5 ): 1 - 11 .
侯连华 , 米敬奎 , 罗霞 , 等 . 压力对页岩原位加热产出油气特征的影响——以鄂尔多斯盆地三叠系延长组7段3亚段页岩为例 [J]. 石油学报 , 2024 , 45 ( 4 ): 629 - 641 .
HOU Lianhua , MI Jingkui , LUO Xia , et al . Pressure effect on the characteristics of oil and gas produced by in-situ heating of shale: A case study of the third submember of Member 7 Yanchang Formation in Ordos Basin [J]. Acta Petrolei Sinica , 2024 , 45 ( 4 ): 629 - 641 .
张亚雄 . 鄂尔多斯盆地中部地区三叠系延长组7段暗色泥岩烃源岩特征 [J]. 石油与天然气地质 , 2021 , 42 ( 5 ): 1089 - 1097 .
ZHANG Yaxiong . Source rock characterization: The dark mudstone in Chang 7 Member of Triassic, central Ordos Basin [J]. Oil & Gas Geology , 2021 , 42 ( 5 ): 1089 - 1097 .
金之钧 , 张谦 , 朱如凯 , 等 . 中国陆相页岩油分类及其意义 [J]. 石油与天然气地质 , 2023 , 44 ( 4 ): 801 - 819 .
JIN Zhijun , ZHANG Qian , ZHU Rukai , et al . Classification of lacustrine shale oil reservoirs in China and its significance [J]. Oil & Gas Geology , 2023 , 44 ( 4 ): 801 - 819 .
李阳 , 赵清民 , 吕琦 , 等 . 中国陆相页岩油开发评价技术与实践 [J]. 石油勘探与开发 , 2022 , 49 ( 5 ): 955 - 964 .
LI Yang , ZHAO Qingmin , LYU Qi , et al . Evaluation technology and practice of continental shale oil development in China [J]. Petroleum Exploration and Development , 2022 , 49 ( 5 ): 955 - 964 .
LI Jijun , YOU Hang , ZHANG Xinwen , et al . Influence of shale reservoir properties on shale oil mobility and its mechanism [J]. Energy Geoscience , 2024 , 5 ( 4 ): 100329 .
何永宏 , 李桢 , 樊建明 , 等 . 鄂尔多斯盆地页岩油开发井网优化技术及实践——以庆城油田为例 [J]. 石油学报 , 2024 , 45 ( 4 ): 683 - 697 .
HE Yonghong , LI Zhen , FAN Jianming , et al . Optimization technical of development well pattern of shale oil in Ordos Basin and its application: A case study of Qingcheng Oilfield [J]. Acta Petrolei Sinica , 2024 , 45 ( 4 ): 683 - 697 .
周超 , 李兵 , 陈春宇 , 等 . PNNPlus饱和度测井技术及其应用 [J]. 中国石油天然气研究 , 2022 , 1 ( 3 ): 32 - 42 .
ZHOU Chao , LI Bing , CHEN Chunyu , et al . PNNPlus saturation logging technology and its application [J]. Chinese Petroleum and Natural Gas Research , 2022 , 1 ( 3 ): 32 - 42 .
相关文章
相关作者
相关机构
京公网安备11010802024621