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Title: Measuring resistivity changes from within a first cased well to monitor fluids injected into oil bearing geological formations from a second cased well while passing electrical current between the two cased wells

Abstract

A.C. current is conducted through geological formations separating two cased wells in an oil field undergoing enhanced oil recovery operations such as water flooding operations. Methods and apparatus are disclosed to measure the current leakage conducted into a geological formation from within a first cased well that is responsive to fluids injected into formation from a second cased well during the enhanced oil production activities. The current leakage and apparent resistivity measured within the first cased well are responsive to fluids injected into formation from the second cased well provided the distance of separation between the two cased wells is less than, or on the order of, a Characteristic Length appropriate for the problem.

Inventors:
Publication Date:
OSTI Identifier:
6062333
Patent Number(s):
US 5187440; A
Application Number:
PPN: US 7-749136
Assignee:
Para Magnetic Logging, Inc., Woodinville, WA (United States)
DOE Contract Number:  
FG06-84ER13294
Resource Type:
Patent
Resource Relation:
Patent File Date: 23 Aug 1991
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; OIL WELLS; RESISTIVITY LOGGING; WATERFLOODING; MONITORING; BOREHOLE LINKING; ELECTRIC CONDUCTIVITY; ENHANCED RECOVERY; LEAKAGE CURRENT; PETROLEUM; RESERVOIR FLUIDS; WELL LOGGING EQUIPMENT; CURRENTS; ELECTRIC CURRENTS; ELECTRIC LOGGING; ELECTRICAL PROPERTIES; ENERGY SOURCES; EQUIPMENT; FLUID INJECTION; FLUIDS; FOSSIL FUELS; FUELS; PHYSICAL PROPERTIES; WELL LOGGING; WELLS; 020300* - Petroleum- Drilling & Production

Citation Formats

Vail, III, W B. Measuring resistivity changes from within a first cased well to monitor fluids injected into oil bearing geological formations from a second cased well while passing electrical current between the two cased wells. United States: N. p., 1993. Web.
Vail, III, W B. Measuring resistivity changes from within a first cased well to monitor fluids injected into oil bearing geological formations from a second cased well while passing electrical current between the two cased wells. United States.
Vail, III, W B. Tue . "Measuring resistivity changes from within a first cased well to monitor fluids injected into oil bearing geological formations from a second cased well while passing electrical current between the two cased wells". United States.
@article{osti_6062333,
title = {Measuring resistivity changes from within a first cased well to monitor fluids injected into oil bearing geological formations from a second cased well while passing electrical current between the two cased wells},
author = {Vail, III, W B},
abstractNote = {A.C. current is conducted through geological formations separating two cased wells in an oil field undergoing enhanced oil recovery operations such as water flooding operations. Methods and apparatus are disclosed to measure the current leakage conducted into a geological formation from within a first cased well that is responsive to fluids injected into formation from a second cased well during the enhanced oil production activities. The current leakage and apparent resistivity measured within the first cased well are responsive to fluids injected into formation from the second cased well provided the distance of separation between the two cased wells is less than, or on the order of, a Characteristic Length appropriate for the problem.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {2}
}