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Filter cake
About: Filter cake is a research topic. Over the lifetime, 7137 publications have been published within this topic receiving 49071 citations.
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TL;DR: In this paper, a non-invasive, in situ, continuous direct observation through the membrane (DOTM) technique was used to study particle deposition and interactions between the particles and the membrane.
321 citations
TL;DR: In this article, a microscopic model of the layer formation and the cake growth at the crossflow microfiltration was introduced, which considers the hydrodynamic, adhesive and friction forces acting on a single particle during the filtration process.
303 citations
TL;DR: In this article, the transition from concentration polarization to cake formation was studied for the membrane filtration of colloidal silica by imposing flux and observing the system response, and it was observed that once J crit is exceeded, the colloids in the polarized layer formed a consolidated cake structure that is slow to depolarize and which reduced the flux.
272 citations
Patent•
17 Oct 2003TL;DR: In this article, a composition and method for self-destructive fluid loss additives and filter cakes in wellbores and subterranean formations is given, which is used in oilfield treatments such as drilling, completion and stimulation where it disappears when it is no longer needed without the use of mechanical means or injection of additional fluids.
Abstract: A composition and method are given for self-destructive fluid loss additives and filter cakes in wellbores and subterranean formations. The fluid loss additives and filter cakes are formed from a mixture of particulate solid acid-precursors, such as a polylactic acid or a polyglycolic acid, and particulate solid acid-reactive materials, such as magnesium oxide or calcium carbonate. In the presence of water, the solid acid-precursors hydrolyze and dissolve, generating acids that then dissolve the solid acid-reactive materials. The composition is used in oilfield treatments such as drilling, completion and stimulation where it disappears when it is no longer needed without the use of mechanical means or injection of additional fluids.
256 citations
TL;DR: Scanning electron microscopy imaging revealed the extreme pliability of well-exfoliated GO, as the pressure due to filtration crumpled single GO sheets, forcing them to slide through pores with diameters much smaller than the flake's flattened size.
Abstract: Graphene oxide (GO) performs well as a filtration additive in water-based drilling fluids at concentrations as low as 0.2 % (w/w) by carbon content. Standard American Petroleum Institute (API) filtration tests were conducted on pH-adjusted, aqueous dispersions of GO and xanthan gum. It was found that a combination of large-flake GO and powdered GO in a 3:1 ratio performed best in the API tests, allowing an average fluid loss of 6.1 mL over 30 min and leaving a filter cake ∼20 μm thick. In comparison, a standard suspension (∼12 g/L) of clays and polymers used in the oil industry gave an average fluid loss of 7.2 mL and a filter cake ∼280 μm thick. Scanning electron microscopy imaging revealed the extreme pliability of well-exfoliated GO, as the pressure due to filtration crumpled single GO sheets, forcing them to slide through pores with diameters much smaller than the flake’s flattened size. GO solutions also exhibited greater shear thinning and higher temperature stability compared to clay-based fluid-lo...
242 citations