摘要
为克服传统的裂缝评价方法在页岩气水平井中不适用的问题,提出了一种基于阵列声波波幅衰减的地层裂缝测井评价方法,核心是通过计算出波形综合相对幅度和置信度来评价地层裂缝的发育程度。结果显示,层理裂缝较发育段气测显示更明显,其实际加砂量也较高,评价方法可用于优化压裂分段和作业方法,提高加砂量,提升储层孔缝沟通及渗透能力,增加页岩气井单井产能与采收率。
To overcome the limitations of traditional fracture evaluation methods in shale gas horizontal wells,a new evaluation method based on the amplitude attenuation of array acoustic waves is proposed.The core idea is to evaluate the development degree of formation fractures by calculating the synthetic waveform relative amplitude and confidence coefficient.Results indicate that fractures in laminated formations are more developed,more evident in gas logging,and correspond to higher actual proppant concentration.The evaluation method can be used to optimize fracturing stages and operational methods,increase proppant concentration,enhance reservoir pore-fracture communication and permeability,and improve the single-well production capacity and recovery of shale gas wells.
作者
张恒
李艳群
季运景
李昂
汪成芳
石文睿
ZHANG Heng;LI Yanqun;JI Yunjing;LI Ang;WANG Chengfang;SHI Wenrui(Jianghan Logging Company,Sinopec Matrix Corporation,Wuhan,Hubei 430073,China;Hong Kong Baptist University,Kowloon,Hong Kong 999077,China;Hong Kong Asian Energy Studies Centre(AESC),Kowloon,Hong Kong 999077,China)
出处
《江汉石油职工大学学报》
2024年第1期13-16,共4页
Journal of Jianghan Petroleum University of Staff and Workers
基金
国家重大科技专项“大型油气田及煤层气开发”(2016ZX05038-006)
中石化石油工程技术服务股份有限公司科技项目“涪陵地区茅一段——栖二段复杂型裂缝测井评价”(SG22-61Q)。
关键词
页岩气
水平井
阵列声波测井
裂缝评价
新方法
Shale gas
Horizontal well
Array acoustic logging
Fracture evaluation
New method
