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

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

Experimental quantification of formation damage caused by the cross-linked gel in tight gas reservoirs

2020 ◽  
Vol 84 ◽  
pp. 103608 ◽  
Author(s):  
Xingyuan Liang ◽  
Fujian Zhou ◽  
Tianbo Liang ◽  
Caizhong Wang ◽  
Yuan Li
Keyword(s):  
Formation Damage ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Tight Gas Reservoirs ◽  
The Cross

scholarly journals Secondary formation damage of low-pressure layer during commingled production in multilayered tight gas reservoirs

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Jingchen Ding ◽  
Changhui Yan ◽  
Yongming He ◽  
Changcheng Wang
Keyword(s):  
Water Saturation ◽  
Low Pressure ◽  
Working Fluid ◽  
Formation Damage ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Back Flow ◽  
Tight Gas Reservoirs ◽  
Secondary Formation ◽  
Tight Gas Reservoir

AbstractThis paper experimentally investigates fluid back-flow behavior and formation damage during commingled production in multilayered tight gas reservoirs. The development of fluid back-flow in commingled tight gas reservoirs was simulated using a newly designed experimental platform. The results indicate that when there is a pressure difference between different layers during commingled production from tight gas reservoir, water produced from the high-pressure layer will invade the low-pressure layer along with gas back-flow and will accumulate in the near-wellbore area. This will lead to an increase in water saturation and a decline in permeability in the low-pressure layer and result in a significant reduction in ultimate recovery. The outcomes of these experiments demonstrate that as well as the formation damage caused by the working fluid during drilling and fracturing, “Secondary Formation Damage” also occurs during commingled production in multilayered tight gas reservoirs. This secondary formation damage mainly occurs in the near-wellbore area of low-pressure layers and is more severe with greater proximity to the wellbore. Through further experimentation to assess the factors influencing secondary formation damage, it is shown that the degree of secondary formation damage increases with decreasing original formation pressure, original water saturation, and permeability in the lower-pressure layer.

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
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