Résumé : One of the most challenging questions in fluid dynamics is whether the incompressible Euler equations can develop a finite-time singularity from smooth initial data. In this paper, we found that small obstacle leads to strong dynamic depletion of the nonlinear vortex stretching, thus avoiding finite-time singularity formation. By passing to the limit in Euler equations in the exterior of an obstacle that shrinks to a point, we obtain Euler equation in the full space while keeping the depletion of the nonlinear term. Then, we prove the existence and uniqueness of global strong solutions in $C([0,+\infty[;W^{r,q}(\R^d))^d$ with $r>\frac{d}{q}+1$, $1