... was formed in the fracture after gel placement and water broke through the particle gel pack to create several water channels to discharge water from the outlet during water injection after PPG placement. The factors that influence PPG injectivity and plugging efficiency have been investigated. Results show...

... following gel placement. The dependence of oil permeability on oil throughput determines how long it takes for a production well to "clean up" or restore productivity after a gel treatment. Consequently, we were interested in how the gel dehydration process progresses as a function of oil throughput...

...) for existing pore-filling gels to provide effective disproportionate permeability reduction. Upstream Oil & Gas pore-filling gel productivity gel placement Fluid Dynamics disproportionate permeability reduction application placement Seright permeability flow in porous media polymer...

... the fractures. During first brine injection after gel placement and maturation in 1-mm-wide fractures, the pressure gradient required to first breach the gel increased significantly with increasing polymer concentration in the gel — ranging from roughly 5 psi/ft for 1X (0.5% polymer) partially formed gels...

... Abstract X-ray computed microtomography (XMT) was used to understand why a Cr(HI)-acetate-HPAM gel reduced permeability to water 80–90 times more than that to oil in strongly water-wet Berea sandstone and in strongly oil-wet porous polyethylene. During oil flow after gel placement in Berea...

... capillary numbers during waterflooding before the gel treatment. During gelant injection, we stayed below the capillary number used during waterflooding before the gel treatment to avoid mobilizing the residual oil in the core. After gel placement and formation in the core, residual resistance factors were...

... flow in porous media aggregate injection pressure gelant polymer aggregate pre-gel aggregate fluid dynamics gel placement buildup injection reservoir simulation upstream oil & gas low-permeability layer filtration mechanism filtration wellbore resistance enhanced recovery...

... polymer treatment polymer technology symp enhanced recovery completion reduction injection zaitoun united states government production control history gel placement completion installation and operations conformance improvement treatment concentration chemical flooding methods selective...

... the remaining oil from these zones. In such a treatment, the gelant material must be placed in the correct location within the reservoir so that gel does not impair reservoir performance. In this paper, we study the dynamics of gel placement in heterogeneous (stratified) reservoir systems. The details...

... be isolated during gel placement. We examined how different types of gels reduce oil and water permeabilities in Berea sandstone. The gel formulations that we investigated included (1) resorcinol-formaldehyde, (2) Cr 3+ (chloride)-xanthan, (3) Cr 3+ (acetate)-polyacrylamide, and (4) colloidal silica. Several...

... gel placement. Second, gel placement without zone isolation should cause the least damage to productive zones in unfractured wells when (a) the gelling formulation exhibits a low resistance factor during placement, (b) the water-oil mobility ratio is relatively high, (c) the most-permeable layer(s...