Remove the small side muscle from each scallop, rinse quickly in cold water, thoroughly pat them dry, then salt and pepper them
Heat the olive oil and butter in a saute pan on medium high heat
Gently add the scallops, cooking in batches to make sure the pan is not crowded and they do not touch. Sear them for 1-1/2 to 2 minutes on each side. They should have a golden crust on both and still be translucent in the center
Remove them, plate, salt and pepper to taste, serve immediately