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Monitoring of EOR operations by electrical prospecting. 2; Denki tansaho ni yoru sekiyu kyosei kaishuho no monitoring. 2

Abstract

Fluid flow tomography (FFT) was applied to monitor the behavior of underground fluid in steam enhanced oil recovery (EOR) for oil sand reservoirs. FFT uses electrode arrangement of a mise-a-la-masse method, and continuously measures time variation in charged and spontaneous potential at various surface points to obtain realtime the images of underground seepage flow. It continuously measures ground surface potentials of 120 channels at intervals of 2s by applying alternative DC between a casing pipe and distant current electrode. It separates charged and spontaneous potential components, and converts them into time series data. It estimates the time and spacial distributions of seepage flow from time variation in spontaneous potential. It determines the change rate distribution of time-sliced apparent resistivity from charged potential to estimate the scale and area of seepage flow. As the experimental result, positive and negative electrodes in the change rate distribution were observed, and the direction connecting each electrode agreed with that of resistivity anomaly. FFT could observe realtime time variation in apparent resistivity due to steam injection. 9 refs., 7 figs.
Authors:
Ushijima, K; Mizunaga, H; Tanaka, T; Masuda, K; [1]  Tamagawa, T [2] 
  1. Kyushu University, Fukuoka (Japan). Faculty of Engineering
  2. Japex Jeoscience Institute, Tokyo (Japan)
Publication Date:
Oct 01, 1996
Product Type:
Conference
Report Number:
CONF-9610294-
Reference Number:
SCA: 040401; 580000; 150301; 440700; PA: NEDO-96:914774; EDB-97:071396; SN: 97001782537
Resource Relation:
Conference: 95. SEGJ conference, Butsuri tansa gakkai dai 95 kai (1996 nendo shuki) gakujutsu koenkai, Kyoto (Japan), 21-23 Oct 1996; Other Information: PBD: Oct 1996; Related Information: Is Part Of Proceedings of the 95th SEGJ Conference; PB: 344 p.; Butsuri tansa gakkai dai 95 kai (1996 nendo shuki) gakujutsu koenkai koen ronbunshu
Subject:
04 OIL SHALES AND TAR SANDS; 58 GEOSCIENCES; 15 GEOTHERMAL ENERGY; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; OIL SANDS; STEAM INJECTION; MONITORING; ELECTRICAL SURVEYS; FLUID FLOW; ELECTRIC POTENTIAL; WATER INFLUX; REAL TIME SYSTEMS; IMAGE PROCESSING; WELL CASINGS; MULTI-CHANNEL ANALYZERS; TIME-SERIES ANALYSIS; SPATIAL DISTRIBUTION; ELECTRIC CONDUCTIVITY
OSTI ID:
472679
Research Organizations:
Society of Exploration Geophysicists of Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE97743637; TRN: 96:914774
Availability:
Available from The Society of Exploration Geophysicists of Japan, 2-18, Nakamagome 2-chome, Ota-ku, Tokyo, Japan; OSTI as DE97743637
Submitting Site:
NEDO
Size:
pp. 210-213
Announcement Date:

Citation Formats

Ushijima, K, Mizunaga, H, Tanaka, T, Masuda, K, and Tamagawa, T. Monitoring of EOR operations by electrical prospecting. 2; Denki tansaho ni yoru sekiyu kyosei kaishuho no monitoring. 2. Japan: N. p., 1996. Web.
Ushijima, K, Mizunaga, H, Tanaka, T, Masuda, K, & Tamagawa, T. Monitoring of EOR operations by electrical prospecting. 2; Denki tansaho ni yoru sekiyu kyosei kaishuho no monitoring. 2. Japan.
Ushijima, K, Mizunaga, H, Tanaka, T, Masuda, K, and Tamagawa, T. 1996. "Monitoring of EOR operations by electrical prospecting. 2; Denki tansaho ni yoru sekiyu kyosei kaishuho no monitoring. 2." Japan.
@misc{etde_472679,
title = {Monitoring of EOR operations by electrical prospecting. 2; Denki tansaho ni yoru sekiyu kyosei kaishuho no monitoring. 2}
author = {Ushijima, K, Mizunaga, H, Tanaka, T, Masuda, K, and Tamagawa, T}
abstractNote = {Fluid flow tomography (FFT) was applied to monitor the behavior of underground fluid in steam enhanced oil recovery (EOR) for oil sand reservoirs. FFT uses electrode arrangement of a mise-a-la-masse method, and continuously measures time variation in charged and spontaneous potential at various surface points to obtain realtime the images of underground seepage flow. It continuously measures ground surface potentials of 120 channels at intervals of 2s by applying alternative DC between a casing pipe and distant current electrode. It separates charged and spontaneous potential components, and converts them into time series data. It estimates the time and spacial distributions of seepage flow from time variation in spontaneous potential. It determines the change rate distribution of time-sliced apparent resistivity from charged potential to estimate the scale and area of seepage flow. As the experimental result, positive and negative electrodes in the change rate distribution were observed, and the direction connecting each electrode agreed with that of resistivity anomaly. FFT could observe realtime time variation in apparent resistivity due to steam injection. 9 refs., 7 figs.}
place = {Japan}
year = {1996}
month = {Oct}
}