The Role of Bubble Formation in Oil Recovery by Solution Gas Drives in Limestones

Abstract

Laboratory data show that the gas-oil ratio performance of non-uniform porosity limestones produced by solution gas drive is sensitive to producing rate and to fluid properties. Non-uniform porosity limestones are those for which laboratory solution and external gas drive tests yield considerably different relative permea-bility ratio characteristics. The oil recovery performance by solution gas drive depends directly on the number of gas bubbles formed.