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OwnerSubramanian Kesavan, Phillipe Neyraval +1inventors
InventorsSubramanian Kesavan, Phillipe Neyraval, Aziz Boukhelifa
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A guar or a guar derivative powder having a D50 particle size of less than 40μ which reaches at least 70% hydration within 60 seconds at about 21° C., is disclosed. It has been found that the improved hydration can be seen at temperatures as low as 0.6° C. The powder can be used in applications such as drilling fluid; fracturing fluid; gravel packing fluids; completion fluid; animal litter; explosive; foodstuff; paperstock; floor covering; synthetic fuel briquettes; water thickener for firefighting; shampoo; personal care lotion; household cleaner; catalytic converter catalyst; electroplating solution; diapers; sanitary towels; super-adsorbent in food packaging; sticking plasters for skin abrasions; water-adsorbing bandages; foliar spray for plants; suspension for spraying plant seeds; suspension for spraying plant nutrients; flotation aid; and flocculent.
A powder having a D50 particle size of less than 40u which reaches at least 70% hydration within 60 seconds at about 21° C., wherein the powder is guar or a guar derivative.
A powder prepared by a method comprising the step of forming a powder from guar gum or a guar derivative, wherein the method does not include any extrusion step and the powder which reaches at least 70% hydration within 60 seconds at about 21° C.
A hydrated, crosslinked guar or guar derivative prepared by hydrating a powder of claim 1 for up to 30 seconds, followed by crosslinking with a crosslinker.
The hydrated, crosslinked guar or guar derivative of claim 12 wherein the crosslinker is selected from the group consisting of borax, boric acid, antimony or metal crosslinker selected from aluminum, zirconium or titanium compounds.
The hydrated, crosslinked guar or guar derivative of claim 12 wherein the hydrating step is in the presence of one or more surfactants, buffers, or oilfield additives.
The hydrated, crosslinked guar or guar derivative of claim 12 wherein the hydrating step comprises introducing the powder to water or brine.
The hydrated, crosslinked guar or guar derivative of claim 12 wherein the hydrating step comprises introducing the powder to brine selected from the group consisting of ammonium chloride, sodium chloride, potassium chloride, sodium bromide, potassium bromide, calcium chloride, calcium bromide, zinc bromide and mixtures of two or more thereof.
A method of preparing guar or guar derivative particles which reaches at least 70% hydration within 60 seconds at about 21° C. comprising reducing the guar or guar derivative to a D50 particle size of less than 40μ.
A method of preparing guar or guar derivative particles which reaches at least 70% hydration within 60 seconds at about 21° C. comprising milling the guar or guar derivative in a jet mill or fluidized jet mill to a D50 particle size of less than 40μ.
Dependencies are inferred from the claim text.