The new method on gas-water two phase steady-state productivity of fractured horizontal well in tight gas reservoir
Journal Title: Advances in Geo-Energy Research - Year 2017, Vol 1, Issue 2
Abstract
Based on a large number of tight gas exploration and development literature researches, it is found that the horizontal drilling technology and fracturing operation are usually used in the tight gas reservoir for its low permeability. Three tasks have been done in this paper. First, we described the characteristics and the flow mechanism of the tight gas reservoirs which are different from the conventional ones and gave a new definition of two phase pseudo pressure. Second, formation stress sensitivity, starting pressure gradient and the interaction of fractures are considered. Equivalent flow resistance was used to establish a model of tight gas steady flow, and a new productivity formula of fractured horizontal well in tight gas reservoir derived by the new flow model. Third, the productivity influence research has been done, which gives the influence degree of different parameters. It is signified that the productivity will increase with the addition of the permeability modulus and decrease with the increase of the water-gas volume ratio. The influence of starting pressure gradient was not very clear and the fractures parameters showed the opposite situation. Therefore optimization design of tight gas reservoir development mode can be improved by the productivity formula and research.
Authors and Affiliations
Xucheng Li, Jing Liang, Weichong Xu, Xiaoping Li, Xiaohua Tan
Keywords
Related Articles
- EP ID EP421880
- DOI 10.26804/ager.2017.02.06
- Views 64
- Downloads 0
A new model for calculating permeability of natural fractures in dual-porosity reservoir
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 analyzin...
Mechanisms of reservoir pore/throat characteristics evolution during long-term waterflooding
Formation pore structure and reservoir parameters change continually during waterflooding due to sand production, clay erosion, and pressure/temperature variation, which causes great challenge in geological modeling and...
The new method on gas-water two phase steady-state productivity of fractured horizontal well in tight gas reservoir
Based on a large number of tight gas exploration and development literature researches, it is found that the horizontal drilling technology and fracturing operation are usually used in the tight gas reservoir for its low...
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...
Hydraulic properties of 3D crossed rock fractures by considering anisotropic aperture distributions
This study presents a numerical study on the geometrical and hydraulic properties of a three-dimensional intersected fracture model that is a fundamental element involved in complex fracture networks. A series of rough f...