Estimating reservoir heterogeneities from pulse testing

Numerical Modeling of Periodic Pumping Tests in Wells Penetrating a Heterogeneous Aquifer

“…A comprehensive description of the numerical solution scheme is provided in Fokker et al (2012). Here we only give the main line of thought and the extension presently applied.…”

“…Periodic pulse testing is a form of testing in which the flow rate is varied a number of times with a fixed frequency and amplitude. Pulse testing was first proposed by Johnson et al (1966); other authors have later elaborated on the idea and particularly on the benefits of periodic pulsing (Kuo, 1972;Black and Kipp, 1981;Marschall and Barczewski, 1989;Rosa and Horne, 1997;Hollaender et al, 2002;Renner and Messar, 2006;Rochon et al, 2008;Ahn and Horne, 2010;Fokker and Verga, 2011;Fokker et al, 2012). The periodic pulses consist in the repetition of two different rates at regular intervals.…”

“…Ahn and Horne (2010) developed a solution for periodic testing that accounts for radial multi-composite reservoirs. To be able to obtain reliable results in more complicated heterogeneous systems we recently developed a numerical simulator in the Fourier space (Fokker et al, 2012). In this study we report on the application of this simulator to results of a field study (Renner and Messar, 2006).…”

What’s Conventional and What’s Special in a Reservoir Study for Underground Gas Storage

“…The need to acquire this information, which would call for expensive traditional testing campaigns, can be better satisfied by alternative well testing procedures, such as harmonic pulse testing [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] and injection testing [41,42]. A harmonic test is characterized by a periodic sequence of alternating production or injection rates that can be imposed after a long shut-in of the tested well, similar to conventional well testing, or can be superposed to ongoing production, minimizing or avoiding economic losses.…”

What’s Conventional and what’s Special in a Reservoir Study for Underground Gas Storage

“…The need to acquire this information, which would call for expensive traditional testing campaigns, can be better satisfied by alternative well testing procedures, such as harmonic pulse testing [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] and injection testing [39,40]. A harmonic test is characterized by a periodic sequence of alternating production or injection rates that can be imposed after a long shut in of the tested well, similar to conventional well testing, or can be superposed to ongoing production, minimizing or avoiding economic losses.…”