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Combined Surface and Cross-hole Electric Tomography for Reservoir MonitoringNormal access

Authors: P. Dell'Aversana, R. Servodio, E. Rizzo, F. Bottazzi and P. Cappuccio
Event name: Second EAGE Workshop Practical Reservoir Monitoring 2019
Session: Alternative Technologies I
Publication date: 01 April 2019
DOI: 10.3997/2214-4609.201900004
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.66Mb )
Price: € 20

Summary:
In this paper, we introduce an integrated electric/electromagnetic methodology for mapping the dynamic resistivity variations during hydrocarbon production, injection and well intervention. Our approach combines surface and cross-hole measurements and allows obtaining time-lapse models of 3D resistivity distribution between the wells and the surface. The discussion is focused on 3D and 4D inversion of cross-hole DC (Direct Current) measurements, combined with surface-to-borehole DC data. Modelling and inversion of both synthetic and laboratory data confirm that joint cross-hole and surface DC tomography allows mapping reservoir fluid variations even in case of metallic components of the well completion.


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