Scaled Miscible Floods in Layered Beadpacks Investigating Viscous Crossflow, the Effects of Gravity, and the Dynamics of Viscous Slug Breakdown

Scale Inhibitor Placement: Back to Basics—Theory and Examples

“…This has been done for a radial system of "laboratory" dimensions as described in Table 1. However, the viscous forces scale linearly to real field dimensions as described elsewhere [22]; i.e. the same results would be found by considering a model of the radial formation with R max = 4.82m etc.…”

“…14 is 56 cm long by 5.5 cm in vertical height and ~1.3 cm thick; full details are given in Table 1 and ref. [22]. Confirmation of the linear flows for this unit mobility flood is shown in Fig.…”

“…18 shows the injection of a viscous slug of clear fluid (µ p ≈10cP) into a blue brine (µ w =1cP) in the two-layer beadpack. It is clear by comparison with the unit mobility results in Fig. 14 that significant amounts of injected fluid are diverted into the low k layer [22]. Indeed the layer pressure profiles for the viscous case in Fig.…”

Quantifying Acid Placement: The Key to Understanding Damage Removal in Horizontal Wells

“…For matrix-acidizing flow rates (i.e., 10 to 200 m 3 /d at the wellbore) in long horizontal sections, the effects of crossflow and gravity segregation in the formation are negligible. 20 As a result, the flow is also radially symmetric and the problem can be reduced to two dimensions: the radial, r, and the along-hole, z, directions.…”