Evaluation Of Damage Mechanisms In Tight Gas Reservoirs: Integration Of Laboratory Experiments And Field Data With Numerical Simulation

2015 ◽  
Author(s):  
Nick Bahrami ◽  
Niek Dousi ◽  
Arshad Lashari
Keyword(s):  
Numerical Simulation ◽  
Field Data ◽  
Laboratory Experiments ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Damage Mechanisms ◽  
Tight Gas Reservoirs

scholarly journals The damage mechanisms of fracturing fluid on production in tight gas reservoirs

2019 ◽  
Vol 158 ◽  
pp. 5988-5993 ◽  
Author(s):  
Yang Li ◽  
Jianchun Guo ◽  
Shibin Wang
Keyword(s):  
Tight Gas ◽  
Fracturing Fluid ◽  
Gas Reservoirs ◽  
Damage Mechanisms ◽  
Tight Gas Reservoirs

Fracturing in Tight-Gas Reservoirs: Application of SCAL Methods To Investigate Formation-Damage Mechanisms

2008 ◽  
Author(s):  
Brigitte Bazin ◽  
Samir Bekri ◽  
Olga Vizika ◽  
Benjamin Herzhaft ◽  
Eric Aubry
Keyword(s):  
Formation Damage ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Damage Mechanisms ◽  
Tight Gas Reservoirs

scholarly journals A Novel Dynamic Splitting Method for Production Based on Material Balance Theory and Catastrophe Theory in Tight Gas Reservoirs

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Shengye Hao ◽  
Xinyu Qiu ◽  
Pengcheng Liu ◽  
Xiaoxia Chen
Keyword(s):  
Numerical Simulation ◽  
Production Process ◽  
Catastrophe Theory ◽  
Scale Effects ◽  
Splitting Method ◽  
Material Balance ◽  
Splitting Methods ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Tight Gas Reservoirs

Splitting methods play a significant role in the coproduction of tight reservoirs which are characterized by vertical multilayer superimposition. It directly affects the accuracy of reservoir performance analysis and detailed descriptions. However, conventional splitting methods are limited to a few factors and static factors without considering the effect of layer parameter change. In this study, sensitivity analysis was carried out on five factors that affect the production splitting in coproduction wells. The research shows that in the production process, multiple parameters have a direct impact on the production of layers. Different parameters, which have to be included to split production, have different scale effects on layer production. Comparing the results of the KH method with the numerical simulation results, the limitation of the KH method for yield splitting is illustrated. A novel dynamic splitting method for production (DPSM) was proposed. This method is based on two primary methods, which are the multifactor static method for production splitting of gas (GPSM) and water (WPSM) and use the catastrophe theory and material balance equation (MBE) and obtain the final results by iterative method. The advantage of this method is that more accurate results in the production process are obtained by selecting eight factors, which contain 6 static factors and 2 dynamic factors, for research. It is more in line with the production practice that the ultimate results of production splitting vary with the production process. The accuracy and practicality of the results had been verified by numerical simulation. This method has practical significance for production splitting in tight gas reservoirs.

Liquid loading in wellbores and its effect on cleanup period and well productivity in tight gas sand reservoirs

2010 ◽  
Vol 50 (1) ◽  
pp. 559
Author(s):  
Hassan Bahrami ◽  
M Reza Rezaee ◽  
Vamegh Rasouli ◽  
Armin Hosseinian
Keyword(s):  
Numerical Simulation ◽  
Gas Production ◽  
Production Performance ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Liquid Loading ◽  
Performance Modelling ◽  
Well Productivity ◽  
Tight Gas Reservoirs ◽  
Tight Gas Reservoir

Tight gas reservoirs normally have production problems due to very low matrix permeability and significant damage during well drilling, completion, stimulation and production. Therefore they might not flow gas to surface at optimum rates without advanced production improvement techniques. After well stimulation and fracturing operations, invaded liquids such as filtrate will flow from the reservoir into the wellbore, as gas is produced during well cleanup. In addition, there might be production of condensate with gas. The produced liquids when loaded and re-circulated downhole in wellbores, can significantly reduce the gas production rate and well productivity in tight gas formations. This paper presents assessments of tight gas reservoir productivity issues related to liquid loading in wellbores using numerical simulation of multiphase flow in deviated and horizontal wells. A field example of production logging in a horizontal well is used to verify reliability of the numerical simulation model outputs. Well production performance modelling is also performed to quantitatively evaluate water loading in a typical tight gas well, and test the water unloading techniques that can improve the well productivity. The results indicate the effect of downhole liquid loading on well productivity in tight gas reservoirs. It also shows how well cleanup is sped up with the improved well productivity when downhole circulating liquids are lifted using the proposed methods.

Fracturing in Tight Gas Reservoirs: Application of Special-Core-Analysis Methods To Investigate Formation-Damage Mechanisms

SPE Journal ◽  
2010 ◽  
Vol 15 (04) ◽  
pp. 969-976 ◽  
Author(s):  
Brigitte Bazin ◽  
Samir Bekri ◽  
Olga Vizika ◽  
Benjamin Herzhaft ◽  
Eric Aubry
Keyword(s):  
Formation Damage ◽  
Core Analysis ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Damage Mechanisms ◽  
Tight Gas Reservoirs ◽  
Analysis Methods ◽  
Special Core Analysis

Evaluation of Damage Mechanisms and Skin Factor in Tight Gas Reservoirs

2011 ◽  
Author(s):  
Hassan Bahrami ◽  
Mohammad Reza Rezaee ◽  
Jakov Ostojic ◽  
Delair Honer Nazhat ◽  
Michael Benedict Clennell
Keyword(s):  
Tight Gas ◽  
Gas Reservoirs ◽  
Damage Mechanisms ◽  
Tight Gas Reservoirs ◽  
Skin Factor

Evaluation of damage mechanisms and skin factor in tight gas reservoirs

2011 ◽  
Vol 51 (1) ◽  
pp. 639 ◽  
Author(s):  
Hassan Bahrami ◽  
Reza Rezaee ◽  
Delair Nazhat ◽  
Jakov Ostojic
Keyword(s):  
Significant Influence ◽  
Permeability Reduction ◽  
Tight Gas ◽  
Natural Fractures ◽  
Gas Reservoirs ◽  
Damage Mechanisms ◽  
Well Productivity ◽  
Tight Gas Reservoirs ◽  
Skin Factor ◽  
Water Blocking

Tight gas reservoirs normally have production problems due to very low matrix permeability and significant damage during well drilling, completion, stimulation and production. Therefore, they may not flow gas at optimum rates without advanced production improvement techniques. The main damage mechanisms and the factors that have significant influence on total skin factor in tight gas reservoirs include: mechanical damage to formation rock; plugging of natural fractures by mud solid particle invasion; relative permeability reduction around wellbore as a result of filtrate invasion; liquid leak-off into the formation during fracturing operations; water blocking; skin due to wellbore breakouts; and the damage associated with perforation. Drilling and fracturing fluids invasion mostly occurs through natural fractures and may also lead to serious permeability reduction in the rock matrix that surrounds the natural or hydraulic fractures. This study represents an evaluation of different damage mechanisms in tight gas formations, and examines the factors that can have significant influence on total skin factor and well productivity. Reservoir simulation was carried out based on a typical West Australian tight gas reservoir to understand how well productivity is affected by each of the damage mechanisms, such as natural fracture plugging, mud filtrate invasion, water blocking and perforation. Furthermore, some damage prevention and productivity improvement techniques are proposed, which can help improve well productivity in tight gas reservoirs.

Evaluation of Damage Mechanisms in Tight Gas Reservoirs: Field Example from Perth Basin

2015 ◽  
Author(s):  
Nick Bahrami ◽  
Samaneh Soroush ◽  
Mofazzal Hossain ◽  
Arshad Lashari ◽  
Muhammad Daloma ◽  
...  
Keyword(s):  
Tight Gas ◽  
Gas Reservoirs ◽  
Damage Mechanisms ◽  
Tight Gas Reservoirs
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