页岩油藏多段水平井压后关井阶段压力扩散数学模型研究
TE357; 多段多簇水平井压裂技术作为页岩油藏的重要开发手段已经得到了广泛认同,压后关井能充分发挥渗吸的作用,提高单井压后产量,但目前压裂液渗吸作用区域一直是困扰油藏工程师的重要难题.本文以陇东页岩油藏多段压裂井为研究对象,基于物质平衡原理,利用渗流力学和岩石力学理论,建立了压裂施工过程中和压后关井过程中流体压力扩散数学模型,研究了压力扩散和压裂液波及体积随时间的变化关系.结果表明:压裂液波及体积随关井时间的增加逐渐增加,但增加的幅度会逐渐降低.储层渗透率越小,孔隙度越大,压裂施工时间越长,关井阶段井底压力越高,地层能量越高.该结果可为页岩油藏最佳关井时间的确定提供理论支持....
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Published in: | 地质与勘探 Vol. 58; no. 3; pp. 686 - 695 |
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Format: | Journal Article |
Language: | Chinese |
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中国石油长庆油田分公司油气工艺研究院,低渗透油气田勘探开发国家实验室,陕西西安 710018%中国地质大学(北京),非常规天然气地质评价与开发工程北京市重点实验室,北京 100083
01-05-2022
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Abstract | TE357; 多段多簇水平井压裂技术作为页岩油藏的重要开发手段已经得到了广泛认同,压后关井能充分发挥渗吸的作用,提高单井压后产量,但目前压裂液渗吸作用区域一直是困扰油藏工程师的重要难题.本文以陇东页岩油藏多段压裂井为研究对象,基于物质平衡原理,利用渗流力学和岩石力学理论,建立了压裂施工过程中和压后关井过程中流体压力扩散数学模型,研究了压力扩散和压裂液波及体积随时间的变化关系.结果表明:压裂液波及体积随关井时间的增加逐渐增加,但增加的幅度会逐渐降低.储层渗透率越小,孔隙度越大,压裂施工时间越长,关井阶段井底压力越高,地层能量越高.该结果可为页岩油藏最佳关井时间的确定提供理论支持. |
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AbstractList | TE357; 多段多簇水平井压裂技术作为页岩油藏的重要开发手段已经得到了广泛认同,压后关井能充分发挥渗吸的作用,提高单井压后产量,但目前压裂液渗吸作用区域一直是困扰油藏工程师的重要难题.本文以陇东页岩油藏多段压裂井为研究对象,基于物质平衡原理,利用渗流力学和岩石力学理论,建立了压裂施工过程中和压后关井过程中流体压力扩散数学模型,研究了压力扩散和压裂液波及体积随时间的变化关系.结果表明:压裂液波及体积随关井时间的增加逐渐增加,但增加的幅度会逐渐降低.储层渗透率越小,孔隙度越大,压裂施工时间越长,关井阶段井底压力越高,地层能量越高.该结果可为页岩油藏最佳关井时间的确定提供理论支持. |
Author | 杜现飞 赵振峰 刘汉斌 徐创朝 赵号朋 |
AuthorAffiliation | 中国石油长庆油田分公司油气工艺研究院,低渗透油气田勘探开发国家实验室,陕西西安 710018%中国地质大学(北京),非常规天然气地质评价与开发工程北京市重点实验室,北京 100083 |
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Author_FL | DU Xianfei LIU Hanbin ZHAO Zhenfeng XU Chuangchao ZHAO Haopeng |
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Title | 页岩油藏多段水平井压后关井阶段压力扩散数学模型研究 |
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