Abstract
The purpose of the present study is to obtain a good shaped charge design using a 2D Eulerian code such that the high speed jet of the liner creates a large hole in the well casing and a small hole in the gun pipe. Double-velocity inverse gradients, one at the tip of the liner and another one located near the middle section of the jet, are described for conical and elliptical shaped charges. A series of computer simulations are performed for jet formation and penetration into the casing wall as well as the surrounding rocks. For a typical liner material, the penetrated casing hole size is related to the liner geometry, the amount of the explosive charge, and the shape as well as the thickness of the charge case. From this study, it is shown that the geometry and the thickness of the liner are the most pertinent parameters for a good charge design.
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