sausage jambalaya

Name: sausage jambalaya
Ingredients: 1 tablespoon vegetable oil -; 1 tablespoon butter -; 2 packages kielbasa sausage - or andouille sausage, chopped into half moons; 1 onion - chopped; 1/2 bell pepper - chopped; 2 stalks celery - chopped; 4 cloves of garlic - minced; 3/4 teaspoon paprika -; 1/2 teaspoon garlic powder -; 1/2 teaspoon onion powder -; 1/2 teaspoon cumin -; 3/4 teaspoon cajun seasoning -; 1/4 teaspoon italian seasoning -; 2 bay leaves -; 1 tablespoon tomato paste -; 2 cups long grain rice -; 2 (8 ounces) cans tomato sauce -; 2 cups chicken stock - bouillon based