| 注液速率对页岩水力压裂起裂的影响规律研究 |
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| 引用本文： | 张同景,郑永香,郑超越,郭相瑞,冯浩,梁哲,张脉.注液速率对页岩水力压裂起裂的影响规律研究[J].河北工程大学学报,2022,39(4):100-105. |
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| 作者姓名： | 张同景 郑永香 郑超越 郭相瑞 冯浩 梁哲 张脉 |
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| 作者单位： | 河北省金属矿山安全高效开采技术创新中心, 河北 石家庄 050043;石家庄铁道大学 道路与铁道工程安全保障省部共建教育部重点实验室, 河北 石家庄 050043,河北省金属矿山安全高效开采技术创新中心, 河北 石家庄 050043;石家庄铁道大学 道路与铁道工程安全保障省部共建教育部重点实验室, 河北 石家庄 050043;西南石油大学 地球科学与技术学院, 四川 成都 610500,河北省金属矿山安全高效开采技术创新中心, 河北 石家庄 050043;石家庄铁道大学 道路与铁道工程安全保障省部共建教育部重点实验室, 河北 石家庄 050043,河北省金属矿山安全高效开采技术创新中心, 河北 石家庄 050043;石家庄铁道大学 道路与铁道工程安全保障省部共建教育部重点实验室, 河北 石家庄 050043,中国石油天然气股份有限公司华北油田 分公司 第五采油厂, 河北 辛集 052300,河北省煤田地质局物测地质队, 河北 邢台 054000,河北省金属矿山安全高效开采技术创新中心, 河北 石家庄 050043;石家庄铁道大学 道路与铁道工程安全保障省部共建教育部重点实验室, 河北 石家庄 050043 |
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| 基金项目： | "十三五"国家油气重大专项(ZX201705037001);河北省自然科学基金青年项目(E2021210036);2021年大学生创新创业训练计划项目(2021101070223) |
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| 摘 要： | 为了研究近井筒区域内的裂缝起裂行为,采用单轴水力压裂设备开展水力压裂试验。采用不同的注液速率开展压裂试验,结果表明注液速率对近井筒范围内的裂缝起裂时间有显著影响,随注液速率增加,起裂时间减小。注液速率对裂缝起裂压力的影响可以忽略,裂缝起裂与注液总量具有较强的关联性。通过图像对比,分析了裂缝表面的粗糙程度,结果表明沿不同位置起裂的裂缝表面粗糙程度不同,沿层理面起裂的裂缝表面粗糙程度更大。
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| 关 键 词： | 水力压裂 注液速率 起裂时间 裂缝起裂 破裂面形态 |
| 收稿时间： | 2022/5/6 0:00:00 |
The Influence of Injection Rate on Initiation of Hydraulic Fractures in Shale |
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| Authors: | ZHANG Tongjing ZHENG Yongxiang ZHENG Chaoyue GUO Xiangrui FENG Hao LIANG Zhe and ZHANG Mai |
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| Affiliation: | Hebei Technology & Innovation Center on Safe and Efficient Mining of Metal Mine, Shijiazhuang, Hebei 050043, China;Key Laboratory of Roads and Railway Engineering Safety Control, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China,Hebei Technology & Innovation Center on Safe and Efficient Mining of Metal Mine, Shijiazhuang, Hebei 050043, China;Key Laboratory of Roads and Railway Engineering Safety Control, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China;School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China,Hebei Technology & Innovation Center on Safe and Efficient Mining of Metal Mine, Shijiazhuang, Hebei 050043, China;Key Laboratory of Roads and Railway Engineering Safety Control, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China,Hebei Technology & Innovation Center on Safe and Efficient Mining of Metal Mine, Shijiazhuang, Hebei 050043, China;Key Laboratory of Roads and Railway Engineering Safety Control, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China,No. 5 Oil Production Plant, Huabei Oilfield Company, CNPC, Xinji, Hebei 052300, China,Geophysical Geological Team of Hebei Coalfield Geology Bureau, Xingtai, Hebei 054000, China and Hebei Technology & Innovation Center on Safe and Efficient Mining of Metal Mine, Shijiazhuang, Hebei 050043, China;Key Laboratory of Roads and Railway Engineering Safety Control, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China |
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| Abstract: | In order to study the fracture initiation behavior in the near-wellbore area, hydraulic fracturing tests were carried out by uniaxial hydraulic fracturing equipment. The results show that the injection rate has a significant influence on the initiation time of fractures in the near-wellbore range. And the initiation time decreases with the increase of injection rate. The influence of injection rate on fracture initiation pressure can be ignored. Fracture initiation has strong correlation with the total amount of injection fluid. Besides, the roughness of fracture surface was analyzed through image comparison. The results show that the roughness of fracture surface is different along different positions. The roughness of fracture surface is larger along bedding plane. |
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| Keywords: | hydraulic fracturing injection rate initiation time fracture initiation fracture surface |
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