Data processing: structural design – modeling – simulation – and em – Simulating nonelectrical device or system – Fluid
Reexamination Certificate
2006-08-29
2006-08-29
Rodriguez, Paul L. (Department: 2123)
Data processing: structural design, modeling, simulation, and em
Simulating nonelectrical device or system
Fluid
Reexamination Certificate
active
07099811
ABSTRACT:
The method essentially comprises acquiring initial data obtained by laboratory measurements of the values, according to the initial permeability of the formations surrounding the well, of the thickness of the cakes and of the damaged permeability and restored permeability values of this zone, as a function of the distance to the wall of the well. Then the damaged zone is discretized by a 3D cylindrical grid pattern forming blocks of small radial thickness in relation to the diameter of the well, and the diffusivity equation, modelling the flow of the fluids through the cakes, is solved in this grid pattern by taking account of the measured initial data. Finally, the evolution of the permeability is modelled as a function of the flow rates of fluids flowing through the cakes, so as to deduce therefrom the optimum conditions to be applied for producing the well.
REFERENCES:
Beall et al., Evaluation of a New Technique For Removing Horizontal Wellbore Damage Attributable to Drill-In Filter Cake, SPE 36429, Oct. 96, pp. 133-145.
Pedrosa and Aziz, Use of Hybrid Grid in Reservoir Simulation, SPE 13507, Nov. 1986, pp. 611-621.
Pierre Cerasi, Physical Modelling Of Drilling Fluid Filter Cake Failure Phenomena, Energy “Marie Curie” Research Training Fellowships Conference, Clamart, France, May 15-17, 2000, pp. 1-10.
Y. Ding, et al., “Modelling of Near-Wellbore Damage Removal by Natural Cleanup in Horizontal Open Hole Completed Wells”, XP0-002187166, Paper SPE-68951, SPE European Formation Damage Conference, May 21, 2001, pp. 1-14.
French Search Report w/English language translation.
Longeron, D., et al, “An Integrated Experimental Approach for Evaluating Formation Damage due to Drilling and Completion Fluids”, 1995, SPE 30089, pp. 117-131.
Alfenor, J., et al, “What really Matters in our Quest of minimizing Formation Damager in Open Hole Horizontal Wells”, 1999, SPE 54731, pp. 1-14.
Longeron, D., et al, “Experimental Approach to Characterize Drilling Mud Invasion, Formation Damage and Cleanup Efficiency In Horizontal Wells with Openhole Completions”, 2000, SPE 58737, pp. 1-13.
Audibert Hayet Annie
Ding Yu Didier
Longeron Daniel
Renard Gerard
Antonelli, Terry Stout & Kraus, LLP.
Institut Francais Du Petrole
Ochoa Juan Carlos
Rodriguez Paul L.
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