Improved oil recovery by application of vibro-energy to waterflooded sandstones

Maximization of wave motion within a hydrocarbon reservoir for wave-based enhanced oil recovery

“…For instance, it has been observed that the rate of oil production and/or the oilwater-cut ratio increases during and after seismic events in oil reservoirs situated within the broader region impacted by the earthquake (Osika (1981); Smimova (1968); Steinbrugge and Moran (1954); Voytov et al (1972)). Increased oil production has also been reported during field experiments conducted with wave sources located on the ground surface, or within a wellbore, either in active or in seemingly-depleted oil fields (Barabanov and Pavlov (2009); Guo et al (2004); Wooden (2005, 2008); Kouznetsov et al (1998); Kuznetsov et al (2002); Kuznetsov and Nikolaev (1990); Spanos et al (2003); Westermark et al (2001b); Zhu and Xutao (2005)). …”

Low-frequency dilatational wave propagation through unsaturated porous media containing two immiscible fluids

“…These values are well above the frequency range of interest in a number of engineering applications, e.g. seismic wave stimulation technology (1-250 Hz) used for the remediation of contaminated groundwater [Roberts et al, 2002] and enhanced oil recovery [Kouznetsov et al, 1998]. Therefore, the decoupled partial differential equations in (27) should be accurate for modeling elastic wave motions in a porous medium under lowfrequency seismic stimulation, after appropriate initial and boundary conditions are imposed.…”

“…Thus our decoupled equations should be applicable to acoustic wave phenomena at seismic frequencies in partially-saturated porous media [Li et al, 2001]. Interest in these phenomena is being stimulated as a consequence of their frequent appearance in problems of biomechanics [Cowin, 1999], geophysical exploration [Kearey et al, 2002], hydrocarbon extraction [Beresnev and Johnson, 1994;Kouznetsov et al, 1998], groundwater remediation [Roberts et al, 2001], seabed stability [Mei and Foda, 1981], and soil consolidation [Lewis and Schrefler, 1998]. The key practical question to be addressed in these applications is how to describe acoustic wave motions as the relative content of each fluid changes.…”

A framework for assessing the uncertainty in wave energy delivery to targeted subsurface formations

“…The laboratory and analytical investigations into the release of trapped particles from the pores of geological formations (Beresnev and Johnson, 1994;Kouznetsov et al, 1998;Roberts et al, 2001;Kostrov and Wooden, 2002;Vogler and Chrysikopoulos, 2002;Iassonov and Beresnev, 2003;Pride et al, 2008;Roberts and Abdel-Fattah, 2009;Beresnev and Deng, 2010;Beresnev et al, 2000;Manga et al, 2012;Lo et al, 2012;Deng and Cardenas, 2013) suggest that an estimate of the fluid motion in the target formation can lead to a better assessment of the particle mobilization phenomenon. In order to estimate the fluid motion generated due to the applied stress wave stimulation, in this section, we consider the case of a poroelastic target inclusion (Ω a , Fig.…”