Combine the chorizo and oil in a medium skillet. Cook over medium heat, stirring often, until the chorizo is browned, about 7 minutes Using a slotted spoon, transfer the chorizo to paper towels (on a real plate), leaving the fat in the pan. Add the onion and red pepper to the skillet. Cook over medium heat, stirring often, until the red pepper is tender, about 6 minutes. Add the garlic, oregano and cumin and stir until the garlic is frangrant, about 1 minute. Add the beans with their canning liquid and the chipotle peppers. Bring to a simmer, stirring often. Reduce heat to low and simmer for 5 minutes. Transfer 1 cup of bean mixture to food processor and puree. Stick back into skillet, with the cooled chorizo. Transfer to a medium bowl and cool. Season with Salt. Cover and refrigerate until chilled, at least 2 hours and up to 2 days. If the chilled dip is too thick, stir in some water or broth. Garnish with Sour Cream and cilantro. Serve with tortilla chips.