ABSTRACT
This paper describes a new reservoir simulator possessing four distinctive features: (1) It uses a recently developed formulation that is efficient in both black-oil and compositional modeling. (2) It possesses a design that permits it to solve efficiently very large problems on a vector computer while being reasonably efficient on smaller problems and on scalar machines. (3) It uses a novel approach to data management that permits writing most of the program as if it rar in core despite the fact that, in general, data is continually being temporarily stored on and retrieved from disk. (4) Its well management package uses a flexible data structure and logic sequence that permits modeling of complex well and surface facility networks.
The paper presents an overview of the simulator, discussing each of the features mentioned above. It also briefly discusses our experience to date in using the new program and the conclusions we have reached based on this experience.
