Fluid injection monitoring using electrical resistivity tomography five years of CO2 injection at Ketzin, Germany

被引:33
作者
Bergmann, P. [1 ,2 ]
Schmidt-Hattenberger, C. [1 ]
Labitzke, T. [1 ]
Wagner, F. M. [1 ,3 ]
Just, A. [4 ]
Flechsig, C. [4 ]
Rippe, D. [1 ]
机构
[1] GFZ German Res Ctr Geosci, Sect Geol Storage 6 3, D-14473 Potsdam, Germany
[2] SINTEF Petr Res, N-7031 Trondheim, Norway
[3] Swiss Fed Inst Technol, Inst Geophys, CH-8092 Zurich, Switzerland
[4] Univ Leipzig, Inst Geol & Geophys, D-04109 Leipzig, Germany
关键词
DATA INCORPORATING TOPOGRAPHY; PILOT SITE; DC RESISTIVITY; STORAGE SITE; INVERSION; MIGRATION; ERT; CO2SINK; PRECIPITATION; SURVEILLANCE;
D O I
10.1111/1365-2478.12426
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Between the years 2008 and 2013, approximately 67 kilotons of CO2 have been injected at the Ketzin site, Germany. As part of the geophysical monitoring programme, time-lapse electrical resistivity tomography has been applied using crosshole and surface-downhole measurements of electrical resistivity tomography. The data collection of electrical resistivity tomography is partly based on electrodes that are permanently installed in three wells at the site (one injection well and two observation wells). Both types of ERT measurements consistently show the build-up of a CO2-related resistivity signature near the injection point. Based on the imaged resistivity changes and a petrophysical model, CO2 saturation levels are estimated. These CO2 saturations are interpreted in conjunction with CO2 saturations inferred from neutron-gamma loggings. Apart from the CO2-brine substitution response in the observed resistivity changes, significant imprints from the dynamic behaviour of the CO2 in the reservoir are observed.
引用
收藏
页码:859 / 875
页数:17
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