Pressure Transient Analysis of Wells With Finite Conductivity Vertical Fractures in Double Porosity Reservoirs

1988 ◽  
Author(s):  
H. Cinco-Ley ◽  
H.-Z. Meng
Keyword(s):  
Transient Analysis ◽  
Double Porosity ◽  
Finite Conductivity ◽  
Pressure Transient Analysis ◽  
Pressure Transient ◽  
Vertical Fractures

Pressure transient analysis for a reservoir with a finite- conductivity fault

2013 ◽  
Vol 5 (2) ◽  
pp. 5-18 ◽  
Author(s):  
Freddy Humberto Escobar ◽  
Javier Andrés Martínez ◽  
Matilde MontealegreMadero
Keyword(s):  
Transient Analysis ◽  
Finite Conductivity ◽  
Pressure Transient Analysis ◽  
Pressure Transient

Transient Pressure Analysis of Wells Intercepted by Partially Penetrating Finite Conductivity Hydraulic Fractures

2013 ◽  
Vol 446-447 ◽  
pp. 479-485
Author(s):  
De Tang Lu ◽  
Qing Xie ◽  
Cong Niu ◽  
Lei Wang
Keyword(s):  
Hydraulic Fracture ◽  
Transient Analysis ◽  
Contradictory Result ◽  
Hydraulic Fractures ◽  
Finite Conductivity ◽  
Well Test ◽  
Analysis Model ◽  
Transient Pressure ◽  
Pressure Transient Analysis ◽  
Pressure Transient

Most current pressure transient analysis techniques of hydraulically fractured wells are based on the fully penetrating assumption, which assumes equal thickness of hydraulic fracture and the formation. However, field application show that the fractures thickness can be shorter than the thickness of formation, which leads to vertical flow into the fracture. Thus applying the thickness equality assumption of current well test models to a partial penetrating fracture may give contradictory result. Further, there are very few studies concerning pressure transient analysis of partial penetrated wells. So it is important to develop analysis model and procedure to this type of fracture. In this paper, we presented an analytical model for partially penetrating hydraulic fracture in isotropic systems, along with the assumption that fracture is finite conductive. This model is then applied in the analysis of field production data, which verified validity of this new model.

Pressure-Transient Analysis of a Finite-Conductivity Inclined Fracture Connected to a Slanted Wellbore

SPE Journal ◽  
2016 ◽  
Vol 21 (02) ◽  
pp. 522-537 ◽  
Author(s):  
Pin Jia ◽  
Linsong Cheng ◽  
Shijun Huang ◽  
Hongjun Liu
Keyword(s):  
Inclination Angle ◽  
Transient Analysis ◽  
Radial Flow ◽  
Flow Regimes ◽  
Finite Conductivity ◽  
Transient Responses ◽  
Pressure Transient Analysis ◽  
Linear Flow ◽  
Pressure Transient ◽  
Permeability Anisotropy

Summary The principal focus of this work is on pressure-transient analysis of a finite-conductivity inclined fracture connected to a slanted wellbore, on the basis of a semianalytical model. Detailed analysis of unsteady-state pressure behavior of a fully penetrating inclined fracture in an infinite-slab reservoir was provided. The study has shown that a finite-conductivity inclined fracture may exhibit five flow regimes: bilinear flow, formation linear flow, early radial flow, compound linear flow, and pseudoradial flow. The characteristics of bilinear flow and formation linear flow are predominantly determined by fracture conductivity. In the case of a low formation-thickness/fracture-half-length ratio and small inclination angle, both early radial flow and compound linear flow may be absent. Analytical solutions for transient responses during different flow regimes are similar to that for a fully penetrating vertical fracture and can be correlated with the cosine of fracture-inclination angle with consideration of permeability anisotropy. Effect of inclination angle and reservoir-permeability anisotropy on transient responses is strong, which extends to pseudoradial-flow period. Formation thickness mainly influences the middle to late flow periods. In addition, the pseudoskin factor is also investigated in detail.

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