Nonlinear flow in low permeability reservoirs: Modelling and experimental verification
Journal Title: Advances in Geo-Energy Research - Year 2019, Vol 3, Issue 1
Abstract
The low-permeability reservoirs are of heavy heterogeneity, low permeability, fine oil-water passages, strong resistance during flow, and the significant interaction between solid and liquid interfaces causes the flow of fluid in reservoir deviating from the Darcy’s law. There is no agreement on the interaction between the various factors in seepage process and the influence of seepage law. The boundary layer exists when liquid flow in micro-tubes and nano-tubes, and the boundary layer decreases with the increase of driving force, and the maximum value of boundary layer ratio is equal to 1. Based on the capillary boundal model and the boundary layer theory, a new exponential seepage model for low permeability reservoirs was proposed. Some experiments of water flow with different pressure gradient were carried out in low permeability cores with permeability of 4 to 8 milidarcy in natural rock cores from an oilfield in China, and the nonlinear model is of good agreement with the single-phase water flooding experiments of these cores. The results demonstrate that the physical meaning of each parameter of the new model is clear and it can be applied to describe the nonlinear characteristics of low permeability reservoirs. The large driving force can overcome disadvantages in the developments of low permeability reservoirs.
Authors and Affiliations
Fuquan Song, Liwen Bo, Shiming Zhang, Yeheng Sun
Keywords
Related Articles
- EP ID EP630989
- DOI 10.26804/ager.2019.01.06
- Views 51
- Downloads 0
A review of stimulated reservoir volume characterization for multiple fractured horizontal well in unconventional reservoirs
Unconventional resource exploration has boosted U.S. oil and gas production, which is successfully by horizontal well drilling and hydraulic fracturing. The horizontal well with multiple transverse fractures has proven t...
The study of relative permeability and residual gas saturation at high pressures and high temperatures
This paper presents the results of laboratory investigation conducted with reservoir rock plugs recovered from the Gas reservoir in the North West Shelf of Western Australia. The experiments were conducted in reservoir c...
The workflow to analyze hydraulic fracture effect on hydraulic fractured horizontal well production in composite formation system
Hydraulic fracturing generally leads to highly complex hydraulic networks for tight oil reservoirs. It is significant to understand the hydraulic fracture effect on well performance. As an effective tool, semi-analytical...
A transparent Open-Box learning network provides insight to complex systems and a performance benchmark for more-opaque machine learning algorithms
It is now commonplace to deploy neural networks and machine-learning algorithms to provide predictions derived from complex systems with multiple underlying variables. This is particularly useful where direct measurement...
Review of exploration and production technology of natural gas hydrate
Natural gas hydrate is an ice-like substance which is sometimes called “combustible ice” since it can literally be lighted on fire and burned as fuel. Natural gas hydrate is characterized by widespread distribution, larg...