泥浆侵入二维数值模拟

常文会; 潘和平; 周峰

doi:10.3799/dqkx.2010.082

Volume 35 Issue 4

Jul. 2010

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CHANG Wen-hui, PAN He-ping, ZHOU Feng, 2010. Two-Dimensional Numerical Simulation of Mud Invasion. Earth Science, 35(4): 674-680. doi: 10.3799/dqkx.2010.082

Citation:

CHANG Wen-hui, PAN He-ping, ZHOU Feng, 2010. Two-Dimensional Numerical Simulation of Mud Invasion. Earth Science, 35(4): 674-680. doi: 10.3799/dqkx.2010.082

CHANG Wen-hui, PAN He-ping, ZHOU Feng, 2010. Two-Dimensional Numerical Simulation of Mud Invasion. Earth Science, 35(4): 674-680. doi: 10.3799/dqkx.2010.082

Citation:

CHANG Wen-hui, PAN He-ping, ZHOU Feng, 2010. Two-Dimensional Numerical Simulation of Mud Invasion. Earth Science, 35(4): 674-680. doi: 10.3799/dqkx.2010.082

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Two-Dimensional Numerical Simulation of Mud Invasion

doi: 10.3799/dqkx.2010.082

CHANG Wen-hui^{1, 2},
PAN He-ping^{1
,
,},
ZHOU Feng¹

1.
Institute of Geophysics & Geomatics, China University of Geosciences, Wuhan 430074, China
2.
Digital Well Logging Station, North China Petroleum Bureau, Xinxiang 453700, China

Received Date: 2009-11-26
Publish Date: 2010-07-01

Abstract

Abstract

Due to the pressure difference between borehole and reservoirs, drilling mud invades the original reserviors while drilling for petroleum, changing the formation resistivity, which has a negative effect on resistivity logging. Based on the theoretical model of two-phase flow equation, convection-diffusion equation and Archie formula, finite difference method is adopted to discretize mud invasion models in the way of two dimensions. Parameters of the reservoir in Mahuangshan area, Ordos basin, north-central China, with the mud invasion time of 24, 48 hours respectively are input for the model, and the vertical and radial distributions of pressure, water saturation, salinity and formation resistivity in the designated time are worked out. The computing results are consistent with fact instance, and can be used for correcting resistivity logging values for mud invasion reservoirs. A case of low invasion is computed and the results prove to conform to the theoretical analysis. This method can be used in mud invasion of vertical inhomogeneous medium.
- two-phase flow,
- water-base mud,
- finite difference method,
- well logging

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References(23)

References

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Two-Dimensional Numerical Simulation of Mud Invasion

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