海洋可控源电磁法深海油藏开采监测仿真  

Simulation of deep-sea reservoir development monitoring using marine controlled-source electromagnetic method

作　　者：刘勇 李文彬 邓方顺 陈航宇 丁学振 刘颖[2,3] LIU Yong;LI Wenbin;DENG Fangshun;CHEN Hangyu;DING Xuezhen;LIU Ying(Laboratory of Low Frequency Electromagnetic Communication Technology with the 722 Research Institute,CSSC,Wuhan,Hubei 430079,China;College of Marine Geosciences,Ocean University of China,Qingdao,Shandong 266100,China;Key Lab of Submarine Geosciences and Prospecting Techniques of Ministry of Education,Qing-dao,Shandong 266100,China)

机构地区：[1]中国船舶集团有限公司第七二二研究所低频电磁通信技术实验室,湖北武汉430079 [2]中国海洋大学海洋地球科学学院,山东青岛266100 [3]海底科学与探测技术教育部重点实验室,山东青岛266100

出　　处：《石油地球物理勘探》2022年第1期237-244,I0010,共9页Oil Geophysical Prospecting

基　　金：国家自然科学基金青年基金项目“基于非结构网格及自适应有限元的海洋CSEM和MT三维联合反演方法研究”(41904074)资助。

摘　　要：海洋可控源电磁法在油气藏开采过程监测方面具有一定的应用价值。基于二维海洋地电模型,利用二维海洋可控源正演程序计算了不同地电模型的电磁响应,对不同环境、不同工作方式下的海洋可控源电磁法监测油气储层开采过程进行仿真分析,对比了"海底发射,海底接收"、"海底发射,井中接收"和"井中发射,井中接收"三种观测方式的监测效果。结果表明,发射频率、油气储层的厚度、埋深和海水深度均会影响监测效果,其中"井中接收"的观测方式更有利于凸显高阻油气储层的电磁响应,对油气储层开采过程的监测效果更好。The marine controlled-source electromagnetic(MCSEM)method has application values in monitoring the development process of reservoirs.On the basis of two-dimensional(2 D)marine geoelectric models,we use a 2 Dforward modeling algorithm of marine controlled sources to calculate the electromagnetic response of different geoelectric models.Simulation analysis is carried out for the influencing factors of reservoir development monitoring by MCSEM under different environment and working modes.In addition,we compare three different observation methods,namely,emitting and receiving at the sea botttom,emitting at the sea bottom and receiving in the well,and emitting and receiving in the well.The results show that the emission frequency,reservoir thickness, burial depth of the reservoir,and depth of seawater all affect the monitoring effect. The observation method that places the receivers in the well has better performance in reservoir development monitoring,which can highlight the electromagnetic response sourced from the high-resistivity reservoir.

关 键 词：海洋可控源电磁法 油气储层监测 二维正演 仿真模拟 

分 类 号：P631[天文地球—地质矿产勘探]