Heat the oil in a pot and add the Vienna sausages (salchichas) and toss around to cook a little. Add the recaito, sazon, ham concentrate, adobo, oregano, and stir around. Cook for a couple of minutes on medium-high heat and pour in the water. Bring the water to a boil and add the rice. Stir the rice occasionally letting the liquid reduce until the rice is visible. Give it one last stir, cover, and reduce heat to low.
Cook for 20-25 minutes more. Uncover. Toss to fluff and serve.