A new model for calculating permeability of natural fractures in dual-porosity reservoir
Journal Title: Advances in Geo-Energy Research - Year 2017, Vol 1, Issue 2
Abstract
During the development of naturally fractured carbonate reservoirs, understanding the change in fracture permeability is the basis for production evaluation and scientific development. The conventional method of analyzing fracture permeability is to take core samples for laboratory experiments. This paper presents a new method to calculate the fracture permeability decrease using actual reservoir pressure data. The mathematical model of fracture permeability change with pressure is established based on material balance in the production process of a fractured reservoir. The model considers crossflow coefficient as well as compression coefficient. According to the results of the model, the fracture permeability decreases with decrease of the formation pressure, but the degree of decline is related to the crossflow coefficient and the compression coefficient. By using this model, the change in fracture permeability can be calculated under different production pressures. This provides a new method for stress sensitivity determination of fractured reservoirs.
Authors and Affiliations
Tiantian Zhang, Zhiping Li, Caspar Daniel Adenutsi, Fengpeng Lai
Keywords
Related Articles
- EP ID EP415874
- DOI 10.26804/ager.2017.02.03
- Views 85
- Downloads 0
Geometrical, fractal and hydraulic properties of fractured reservoirs: A mini-review
Fractures and fracture networks play an important role in ?uid ?ow and transport properties of oil and gas reservoirs. Accurate estimation of geometrical characteristics of fracture networks and their hydraulic propertie...
A self-similar analytical solution of spontaneous and forced imbibition in porous media
Both viscous and capillary forces control the two-phase flow in porous media. The Buckley Leverett solution for viscous flow in porous media has been proposed for over a half century. While the corresponding studies of c...
Research of water control technology for horizontal wells in water-driven reservoirs
Horizontal wells are widely applied in the Bohai offshore oil fields due to their large oil drainage areas and high yields. However, water coning is a significant problem existing in water-driven reservoirs. To control w...
Investigation of methane adsorption mechanism on Longmaxi shale by combining the micropore filling and monolayer coverage theories
Understanding the methane adsorption mechanism is critical for studying shale gas storage and transport in shale nanopores. In this work, we conducted low-pressure nitrogen adsorption (LPNA), scanning electron microscopy...
Compressed air energy storage: characteristics, basic principles, and geological considerations
With increasing global energy demand and increasing energy production from renewable resources, energy storage has been considered crucial in conducting energy management and ensuring the stability and reliability of the...