Open AccessA change in oil viscosity during field development influences the Muskat — Leverett model solutions
Author(s) -
Oleg Bocharov,
И. Г. Телегин
Publication year - 2019
Publication title -
izvestiâ vysših učebnyh zavedenij. neftʹ i gaz
Language(s) - English
Resource type - Journals
ISSN - 0445-0108
DOI - 10.31660/0445-0108-2019-3-39-46
Subject(s) - viscosity , isothermal process , oil field , thermodynamics , filtration (mathematics) , displacement (psychology) , mechanics , saturation (graph theory) , chemistry , petroleum engineering , mathematics , physics , geology , psychology , statistics , combinatorics , psychotherapist
It has been repeatedly noted in the literature that the physic-chemical properties of oil extracted at different stages of exploitation can vary significantly. We have investigated a modification of the Buckley — Leverett model (BL model) in our previous works to study the influence of oil viscosity change on the solutions of twophase filtration problems. In this model the change in oil viscosity was modeled using the dependence of the viscosity ratio on dynamic water saturation. The solutions to the linear displacement problem at a given total filtration rate were analyzed. This article considers a modification of the two-phase isothermal Muskat — Leverett model (ML model), which takes into account capillary forces. The influence of oil viscosity change in the process of oil production on the structure of the solution is studied numerically a case study of the problem of radial displacement with a given pressure drop.