摘要
建立钻遇断层水平井地质模型,利用COMSOL有限元软件实现HDIL阵列感应测井响应三维数值计算,研究在钻遇断层水平井中断层参数对HDIL阵列感应测井响应的影响特征。结果表明,钻遇断层时,阵列感应不同子阵列的数值和相互关系与水平井的位置、断距、储层和围岩电导率有关;断层倾角影响测井曲线开始变化的位置。长子阵列最先反应断层存在,7个子阵列响应相交情况可以确定断层位置;进入上盘时7个子阵列的数值和相互关系可以识别水平井进入上盘的位置。
The study of response characteristics in horizontal well penetrating fault plays an important role in the analysis of the fault status. Firstly, the geologic model of the horizontal well is established, and then use the results of COMSOL three-dimensional numerical calculation to study the response characteristics of the high definition induction logging tool （HDIL） in horizontal well of drilling faults. The results show that when drilling encounters fault formation, the values and correlations of subarrays change with the well position, fault distance, reservoir and shoulder conductivity of the horizontal well. Fault dip affects the changing position of logging curve. The longest subarray responses the existence of faults firstly, and the intersection of all the response characteristics can determine the position of faults. The values and correlations of the seven subarrays at the time of entry in the hanging wall can identify the position of the horizontal well into the hanging wall.
出处
《测井技术》
CAS
CSCD
2017年第3期266-271,共6页
Well Logging Technology
基金
国家自然科学基金水平井随钻阵列感应测井环境动态建模及参数估计(41474108)
陕西省教育厅重点实验室项目砾岩地层电各向异性机理和探测技术研究(12JS079)
大庆钻探工程公司致密油储层精细评价技术研究(290015121)
关键词
阵列感应测井
水平井
断层
三维地质建模
COMSOL软件
high definition induction logging （HDIL）
horizontal well
fault formation
three dimensional geological modeling
COMSOL software
