International Symposium and Exhibition on Formation Damage Control 2002
DOI: 10.2118/74698-ms
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A Rigorous Formation Damage Skin Factor and Reservoir Inflow Model for a Horizontal Well

Abstract: In this paper, we present a new analytical model for formation damage skin factor and the resulting reservoir inflow that includes the effect of reservoir anisotropy and damage heterogeneity. The shape of the damaged region perpendicular to the wellbore is based on the pressure equation for an anisotropic medium, and is thus circular near the well and elliptical far from the well. This assumption gives an appropriate skin factor even for a small penetration of damage. The new model can be used for any distribu… Show more

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Cited by 27 publications
(19 citation statements)
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“…Heat conduction both in the axis and radial directions must therefore be considered. Furui et al (2003) investigated a reservoir inflow model for a horizontal well and approximated the pressure and temperature profile in the reservoir as a composite of 1D radial flow near the well, and a 1D linear flow further away from the well as shown in Fig. 2 below.…”
Section: Formation Regionmentioning
confidence: 99%
See 1 more Smart Citation
“…Heat conduction both in the axis and radial directions must therefore be considered. Furui et al (2003) investigated a reservoir inflow model for a horizontal well and approximated the pressure and temperature profile in the reservoir as a composite of 1D radial flow near the well, and a 1D linear flow further away from the well as shown in Fig. 2 below.…”
Section: Formation Regionmentioning
confidence: 99%
“…Iyoho et al (2009) discussed the influencing factors on wellbore temperature of horizontal wells with long horizontal or near horizontal sections for mud system design purposes, no theoretical details were revealed. Gonzalez et al (2004) found that the fracture gradient can be influenced by wellbore temperature through leak-off test. Yu et al (2001) and Nguyen et al (2010) modeling the thermal effects on wellbore stability, separately.…”
Section: Introductionmentioning
confidence: 99%
“…3.1, the pressure drop in the reservoir can be obtained by integrating Darcy's law along the streamline. Furui et al (2003) investigated the geometry of streamlines from a finite element simulation and approximated the pressure profile in the reservoir by a composite of 1D radial flow near the well and 1D linear flow farther from the well as drawn in Fig. 3.2.…”
Section: Inflow Temperature Estimationmentioning
confidence: 99%
“…The assumptions for this coupled model are the following: (1) Steady-state flow: For continuous well flow, changes in the well rate are much slower than the response time of any sensor; hence, we can neglect time derivatives in our treatment. We use the steady-state model of Furui et al 18 to describe the pressure profile in the reservoir. …”
Section: 1mentioning
confidence: 99%