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RESEARCH PAPERS

Evaluation of Horizontal Well Performance After Drilling-Induced Formation Damage

[+] Author and Article Information
Y. Ding

Institut Français du Pétrole

G. Renard

Institut Français du Pétrole

J. Energy Resour. Technol 127(3), 257-263 (Mar 22, 2005) (7 pages) doi:10.1115/1.1924463 History: Received August 19, 2004; Revised March 22, 2005

It is well recognized that near-wellbore formation damage can dramatically reduce well productivities, especially for open hole completed horizontal wells. The economic impact of poor productivity of these wells has pushed toward significant efforts in recent years to study laboratory testing techniques and numerical modeling methods for predicting and controlling drilling-induced formation damage. This paper presents an integrated approach, combining a near-wellbore modeling with laboratory experiments for data acquisition as input for the model, to evaluate the performance of oil and gas wells after drilling-induced formation damage.

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Copyright © 2005 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Equipment for dynamic mud leak-off tests on long core samples

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Figure 2

Drilling fluid invasion and filter cake formation

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Figure 3

Cylindrical grid for horizontal well modeling

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Figure 4

Flux calculation on the well block

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Figure 5

Permeability variation as a function of flow on porous surface unit during back flow

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Figure 6

Damaged permeability curve cd and final returned permeability curve cf

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Figure 7

Equipotential curves in different coordinate systems

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Figure 8

Well flow rate in cleanup test

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Figure 9

Bottom hole pressure during the cleanup test

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Figure 10

Permeability reduction coefficients in the internal cake

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