探讨了随钻双感应测井仪器槽开口方向、仪器高度以及地层电导率的变化对半空间响应的影响规律,从而为确定随钻双感应测井仪器线圈系误差提供相关依据.首先简化随钻双感应测井仪器半空间响应模型装置,使用COMSOL软件建立水平响应模型,并开展了网格剖分和模型验证工作,对最终的响应特性进行深入分析.研究表明:在仪器槽开口方向不同的前提下,地层电导率增加,半空间响应呈现出非线性增加的趋势;仪器槽开口方向不同,对半空间响应的影响也较大(其中,开口向下时影响最大,开口向上时影响最小);当仪器高度达到0.4m时,半空间响应达到最大,且峰值所在位置不会随地层电导率的变动而变动.

Crosswell seismic,as a bridge between logging data and seismic data,which improves the comprehensive interpretation,and allows us to have reliable data to support interpretation on any scale.However,whether domestic or foreign,crosswell seismic equipment,especially the source,is still the bottleneck of crosswell seismic technology.If the stimulative performance of seismic source fails to meet requirements,the collected data cannot be a true reflection of the measured formation information,measurement would be meaningless.The characteristic analysis of seismic source recent in high frequency uses is done,in order to select suitable source in the next work.

The logging instrument is easy to be damage in Pipe-Conveyed Logging,so it is necessary to design corresponding protective device to protect the instrument.According to the instrument characteristics,1515HDIL array induction logging instrument Protector,the XMAC and Digital Acoustilog logging instrument centralizer,2228 Z-Density logging instrument pad protector,and the drill rod taking off and landing buffer have been designed.These protective measures function well in the Pipe-Conveyed Logging to the logging instrument.