Well treatment process
View Patent ↗The invention provides a method for the treatment of a hydrocarbon well which method comprises administering, down said well, polymeric particles having covalently bound to a polymeric component thereof a well treatment chemical or a precursor thereof, wherein the particles contain covalent bonds scissile in an aqueous environment to release or expose said chemical or precursor.
1. A method for the treatment of a hydrocarbon well which method comprises administering, down said well, polymeric particles having covalently bound to a polymeric component thereof a well treatment chemical or a precursor thereof, said particles containing covalent bonds scissile in an aqueous environment to release or expose said chemical or precursor.
2. The method as claimed in claim 1 , wherein said polymer particles are administered before hydrocarbon production from said well begins.
3. The method as claimed in claims 1 or 2 , wherein said polymer particles are placed in a filter in the bore-hole of said well and in the formation surrounding said bore-hole.
4. The method as claimed in claim 1 , wherein said polymer particles are impregnated with an agent capable of promoting scission of said scissile covalent bonds.
5. A tubular filter for down-hole placement containing polymeric particles having covalently bound to a polymeric component thereof a well treatment chemical or a precursor thereof, wherein said particles contain covalent bonds scissile in an aqueous environment to release or expose said chemical or precursor.
6. The filter as claimed in claim 5 , wherein said polymer particles are impregnated with an agent capable of promoting scission of said scissile covalent bonds.