Inflow Performance and Transient Pressure Behavior of Selectively Completed Vertical Wells

1997 ◽  
Author(s):  
T. Yildiz ◽  
Y. Cinar
Keyword(s):  
Transient Pressure ◽  
Vertical Wells ◽  
Pressure Behavior ◽  
Inflow Performance

Inflow Performance and Transient Pressure Behavior of Selectively Completed Vertical Wells

1998 ◽  
Vol 1 (05) ◽  
pp. 467-475 ◽  
Author(s):  
Turhan Yildiz ◽  
Yildiray Cinar
Keyword(s):  
Latin American ◽  
Petroleum Engineering ◽  
Transient Pressure ◽  
Vertical Wells ◽  
Pressure Derivative ◽  
Pressure Behavior ◽  
Original Manuscript ◽  
New Interpretation ◽  
Engineering Conference ◽  
Inflow Performance

This paper (SPE 51334) was revised for publication from paper SPE 38973, first presented at the 1997 SPE Latin American and Caribbean Petroleum Engineering Conference, Rio de Janeiro, Brazil, 30 August-3 September. Original manuscript received for review 21 October 1997. Revised manuscript received 12 June 1998. Paper peer approved 24 June 1998. Summary This paper presents new methods to estimate the inflow performance and transient pressure behavior of selectively completed vertical wells. In the first part, inflow performance of wells perforated at several intervals along the producing formation is investigated. It is observed that formation anisotropy, total perforated length/formation thickness ratio, and mechanical skin distribution caused by formation damage are the parameters controlling the well productivity. In the second part, transient pressure and pressure-derivative response of selectively perforated wells are modeled and examined. A new interpretation technique, which combines the conventional semilog straightline analysis and type-curve matching method, is presented to determine reservoir parameters. P. 467

Transient Pressure Behavior of Dual-Lateral Wells

SPE Journal ◽  
1998 ◽  
Vol 3 (02) ◽  
pp. 181-190 ◽  
Author(s):  
Erdal Ozkan ◽  
Turhan Yildiz ◽  
Fikri Kuchuk
Keyword(s):  
Transient Pressure ◽  
Pressure Behavior

Transient Pressure Behavior of Acid Fracturing Well in Tidal Flat Carbonate Reservoirs

2018 ◽  
Author(s):  
Wenyang Shi ◽  
Yuedong Yao ◽  
Shiqing Cheng ◽  
He Li ◽  
Naichao Feng ◽  
...  
Keyword(s):  
Tidal Flat ◽  
Carbonate Reservoirs ◽  
Transient Pressure ◽  
Acid Fracturing ◽  
Pressure Behavior

Pressure Transient Analysis for a Finite-Conductivity Fractured Vertical Well Near a Leaky Fault in Anisotropic Linear Composite Reservoirs

2020 ◽  
Vol 142 (7) ◽  
Author(s):  
Junjie Ren ◽  
Yangyang Gao ◽  
Qiao Zheng ◽  
Delong Wang
Keyword(s):  
Numerical Solutions ◽  
Superposition Principle ◽  
Analytical Models ◽  
Finite Conductivity ◽  
Vertical Wells ◽  
Pressure Behavior ◽  
Linear Composite ◽  
Composite Models ◽  
Multiple Reservoir ◽  
Almost All

Abstract Geologic discontinuities usually exist in subsurface permeable formations, where multiple reservoir regions with distinct properties are separated by linear leaky faults. This kind of heterogeneous reservoir is usually called a linear composite reservoir. Although many analytical/semi-analytical linear composite models have been established to investigate the pressure behavior for linear composite reservoirs, almost all of these models were aimed at vertical wells without hydraulic fracturing and there are few analytical/semi-analytical models of fractured vertical wells in linear composite reservoirs. This paper first derives the Laplace-space point source solution for anisotropic linear composite systems separated by a partially communicating fault. Then, superposition principle and fracture discrete scheme are employed to acquire the semi-analytical solution for finite-conductivity fractured vertical (FCFV) wells in anisotropic linear composite reservoirs with a fault. The proposed solution is validated against numerical solutions under different reservoir scenarios. The characteristic of the pressure behavior for an FCFV well in anisotropic linear composite reservoirs with a fault is discussed in detail. The proposed model can be employed to obtain accurate pressure response with high computational efficiency. It is a good start to further develop analytical/semi-analytical models for other complex well types in an anisotropic linear composite reservoir with a fault.

Non-Darcy Binomial Deliverability Equations for Partially Penetrating Vertical Gas Wells and Horizontal Gas Wells

2009 ◽  
Author(s):  
Tao Zhu ◽  
Jing Lu
Keyword(s):  
Bottom Water ◽  
Horizontal Wells ◽  
Vertical Wells ◽  
Gas Wells ◽  
Gas Reservoirs ◽  
Gas Reservoir ◽  
Gas Well ◽  
Increase Productivity ◽  
Flow Domain ◽  
Inflow Performance

Many gas reservoirs are with bottom water drive. In order to prevent or delay unwanted water into the wellbore, the producing wells are often completed as partially penetrating vertical wells, and more and more horizontal wells have been drilled in recent years in bottom water drive gas reservoirs to reduce water coning and increase productivity. For a well, non-Darcy flow is inherently a near wellbore phenomenon. In spite of the considerable study that non-Darcy behavior of fully penetrating vertical wells, there has been no study of a partially penetrating vertical well or a horizontal well in a gas reservoir with bottom water drive. This paper presents new binomial deliverability equations for partially penetrating vertical gas wells and horizontal gas wells, assuming that only radial flow occurs in the near wellbore non-Darcy’s flow domain. The inflow performance of a vertical gas well is compared with that of a horizontal gas well. The proposed equations can account for the advantages of horizontal gas wells.

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