井下低频水力脉动压裂机理与应用  

Mechanism Study and Application of Downhole Low-frequency Pulsing Hydraulic Fracturing Technology

作　　者：聂翠平[1] 兰剑平 王祖文 张冕 许洪星 张海波 NIE Cuiping;LAN Jianping;WANG Zuwen;ZHANG Mian;XU Hongxing;ZHANG Haibo(College of Petroleum Engineering,Xi'an Shiyou University,Xi'an,Shaanxi 710065,China;Changqing Downhole Technology Operation Company,PetroChina Chuanqing Drilling Engineering Co.,Ltd.,Xi'an,Shaanxi 710021,China)

机构地区：[1]西安石油大学石油工程学院,陕西西安710065 [2]中国石油集团川庆钻探工程有限公司长庆井下技术作业公司,陕西西安710021

出　　处：《西安石油大学学报（自然科学版）》2020年第5期54-59,共6页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：陕西省重点研发计划项目“低渗透致密油气藏井下水力脉动压裂配套技术研究”(2018GY-084)。

摘　　要：针对岩石疲劳损伤特性,基于井下低频水力脉动载荷下岩石的疲劳损伤敏感参数和相关脉动传播衰减研究,确定了井下低频水力脉动压裂的合理参数范围。基于理论计算和模拟试验测试,设计了一种安全可靠、能适配水力压裂施工设计、输出参数值在优化范围的井下低频水力脉动发生装置。现场应用表明,采用该新技术后施工压力显著降低,施工安全可靠;对比同平台丛式井组邻井,增产效果明显。The reasonable range of downhole low-frequency hydraulic pulsation fracturing parameters is determined based on the study of fatigue damage sensitive parameters and related pulsation propagation attenuation of rock under low-frequency hydraulic pulsation load.A safe and reliable downhole low-frequency hydraulic pulsation generator is designed based on theoretical calculation and simulation test,which can adapt to the hydraulic fracturing design and the output parameters in the optimized range.The field application shows that the construction pressure is significantly reduced and the construction is safe and reliable after adopting the new technology.Compared with adjacent wells in cluster well group of the same platform,the stimulation effect of the technology is obvious.

关 键 词：低频水力脉动压裂 脉动频率 压力波幅 疲劳损伤 

分 类 号：TE35[石油与天然气工程—油气田开发工程]