摘要
核磁共振测井对于地层流体的综合评价有着重要的作用,它也是储层开采以及解释疑难井的重要手段。为了解决井下核磁共振测井作业的参数选取问题,提高并增强井下作业的速度和效率,考虑到岩石孔隙内各流体的不同弛豫机理,开发一种预测核磁共振T_(2)谱的测前设计软件。测前设计软件由T_(2)谱构造、回波生成加噪、反演生成以及参数建议4个模块构成,能够预测地层的T_(2)谱形态,对提前认识待测量地层有重要的意义。实验结果表明,所设计软件操作简单、结果精确,可为核磁共振测井测前设计优化以及正反演等研究提供借鉴。
Nuclear magnetic resonance logging plays an important role in the comprehensive evaluation of formation fluids,and is an important means for complex reservoir extraction and interpretation of difficult wells.In order to improve the parameter selection of underground magnetic resonance logging operations,and improve and enhance the speed and effectiveness of underground operations,a pre testing design software for predicting nuclear magnetic resonance T_(2)spectrum is developed by taking into account the different relaxation mechanisms of various fluids in rock pores.The pre measurement design software is composed of four modules:T_(2)spectrum construction,echo generation and noise addition,inversion generation,and parameter recommendation.It can predict the T_(2)spectrum shape of the formation and plays an important role in early understanding of the formation to be measured.The experimental results show that the designed software is easy to operate,with accurate results,which can provide reference for the optimization of nuclear magnetic logging pre logging design and forward and reverse modeling research.
作者
许傲
何宗斌
叶才骏
叶宇晗
XU Ao;HE Zongbin;YE Caijun;YE Yuhan(College of Geophysics and Petroleum Resources,Yangtze University,Wuhan 430100,China;Key Laboratory of Exploration Technologies for Oil and Gas Resources of Ministry of Education,Yangtze University,Wuhan 430100,China)
出处
《现代电子技术》
北大核心
2024年第4期65-70,共6页
Modern Electronics Technique
关键词
核磁共振测井
T_(2)谱
弛豫信号
回波串
反演生成模块
测前设计
nuclear magnetic resonance
logging T_(2)spectrum
relaxation signal
echo string
inversion generation module
pre test design
