Characterization of Partially Formed Polymer Gels for Application to Fractured Production Wells for Water-Shutoff Purposes

2004 ◽  
Author(s):  
R.D. Sydansk ◽  
Y. Xiong ◽  
A.M. Al-Dhafeeri ◽  
R.J. Schrader ◽  
R.S. Seright
Keyword(s):  
Polymer Gels ◽  
Water Shutoff ◽  
Production Wells

Characterization of Partially Formed Polymer Gels for Application to Fractured Production Wells for Water-Shutoff Purposes

2005 ◽  
Vol 20 (03) ◽  
pp. 240-249 ◽  
Author(s):  
R.D. Sydansk ◽  
Y. Xiong ◽  
A.M. Al-Dhafeeri ◽  
R.J. Schrader ◽  
R.S. Seright
Keyword(s):  
Polymer Gels ◽  
Water Shutoff ◽  
Production Wells

Water Shutoff Using Crosslinked Polymer Gels (Azeri)

2019 ◽  
Author(s):  
Elchin F. Veliyev ◽  
Azizagha A. Aliyev ◽  
Vugar V. Guliyev ◽  
Nurana V. Naghiyeva
Keyword(s):  
Polymer Gels ◽  
Crosslinked Polymer ◽  
Water Shutoff

An Active Method for Characterization of Flow Units Between Injection/Production Wells by Injection-Rate Design

2011 ◽  
Vol 14 (04) ◽  
pp. 433-445 ◽  
Author(s):  
Kun-Han Lee ◽  
Antonio Ortega ◽  
Amir Mohammad Nejad ◽  
Iraj Ershaghi
Keyword(s):  
Reservoir Characterization ◽  
Injection Rate ◽  
High Permeability ◽  
Injection Wells ◽  
Flow Units ◽  
Weight Factors ◽  
Production Wells ◽  
Preferential Flows ◽  
Injection Rates

Summary This paper presents a novel data-mining method to characterize the flow units between injection and production wells in a waterflood, using carefully implemented variations in injection rates. The method allows the computation of weight factors representing the influence of any of the injectors surrounding a given producer. The weight factors are used to characterize the effective contribution of injection wells to the total gross production in surrounding production wells. A wavelet approach is used to design the perturbation in the injection rates and to analyze the observed variations in the gross production rates. Tracking the contribution of injectors to various producers can help in balancing voidage replacement in waterflood optimization. A second application is reservoir characterization, in which information provided by the proposed procedure can help in mapping high-permeability flow units such as channels and fractures as well as flow barriers between wells. The method was calibrated and tested successfully for simulated line-drive and five-spot patterns with various assumed flow units and flow-heterogeneity conditions. The paper also includes a case study for a tight-formation waterflood in which the weight factors are intended to delineate the pattern of natural high-permeability channels causing preferential flows.

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