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1 January 2015 The Resistivity Response of Mud Invasion in Fractured Reservoir and Its Correction Method
Jun Zhao, Li Gu, Jianhua Liu, Mingshun Zhou
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Zhao, J.; Gu, L.; Liu, J., and Zhou, M., 2015. The resistivity response of mud invasion in fractured reservoir and its correction method.

Resistivity logging data is crucial in reservoir evaluation. However, during the well drilling, it's difficult to obtain the true resistivity of the formation, which is due to the impact of mud invasion in permeable formations and its complex invasion mechanism and influencing factors. This affects the accuracy of reservoir divided, the identification of oil/gas/water zone and calculation of saturation. To solve this problem, the author conducted a experiment which is called “Core Resistivity at Different Fracture Width Experiment”, then, combining the imaging and conventional logging data to study the resistivity response mechanism of mud invasion; ultimately, fitting the correction model for reservoir resistivity which is affected by the development of fracture. By comparing the results of the logging data interpretation, we found that the reservoir resistivity have been effectively corrected, furthermore, the oil saturation increased by 5.6% to 12%, the average increase reached 7.5%.

© 2015 Coastal Education and Research Foundation
Jun Zhao, Li Gu, Jianhua Liu, and Mingshun Zhou "The Resistivity Response of Mud Invasion in Fractured Reservoir and Its Correction Method," Journal of Coastal Research 73(sp1), 399-402, (1 January 2015).
Received: 2 August 2014; Accepted: 5 November 2014; Published: 1 January 2015
carbonate rock
Mud invasion
reservoir evaluation
resistivity correction
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