The workflow to analyze hydraulic fracture effect on hydraulic fractured horizontal well production in composite formation system
Journal Title: Advances in Geo-Energy Research - Year 2018, Vol 2, Issue 3
Abstract
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 solution for well pressure transient analysis (PTA) and rate transient analysis (RTA) is used in large amount because of higher calculation efficiency than numerical solution. In this paper, the PTA and RTA methods and result of composite formation system (CFS) are shown comprehensively. Firstly, a mathematical model of multistage fractured horizontal well (MsFHW) in CFS was proposed for tight oil reservoir with different regions and formation properties. In the model, two regions with different formation parameters were distinguished. This assumption of two regions, i.e. CFS is a composite tight reservoir formed after hydraulic fracturing. Difference of finite hydraulic fracture conductivity, inclined angle of hydraulic fracture, different shapes of multi-wing fractures in perforating point are considered to make this model powerful to analyze production performance of different MsFHW types. The inner and outer regions were assumed as dual porosity medium?but single porosity medium model can also be solved by simplification. Then, the solution of MsFHW performance analysis model is obtained by source function method and the source function superposition principle which are common used in PTA and RTA. PTA for well producing at a constant production rate and RTA for well producing at a constant wellbore pressure were obtained and discussed. Different flow regimes were divided for different fracture geometry situations. The effects of different MsFHW types on PTA and RTA were analyzed. The inflow performance for different hydraulic fractures were presented.
Authors and Affiliations
Jianwei Yuan, Ruizhong Jiang, Wei Zhang
Keywords
Related Articles
- EP ID EP536102
- DOI -
- Views 56
- Downloads 0
Experimental study on evolution behaviors of triaxial-shearing parameters for hydrate-bearing intermediate fine sediment
Evolution behaviors of triaxial shearing parameters are very important for geo-technical response analysis during the process of extracting natural gas from hydrate-bearing reservoirs. In order to explore the effects of...
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...
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...
Experimental study on spontaneous imbibition chatacteristics of tight rocks
In the exploitation of tight oil and gas reservoirs, multi-stage hydraulic fracturing technology is mainly used and a complex system of fractures and matrix is formed after fracturing. In the process of field production,...
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...