Equipment for dissolving polyacrylamide powder for obtaining an aqueous solution thereof for enhanced oil recovery

Patent · Tue May 21 00:00:00 EDT 1985

OSTI ID:6159159

Sekimoto, Y; Okamoto, O

Equipment for dissolving polyacrylamide powder to obtain an aqueous solution thereof for enhanced oil recovery comprises first and second powder storage tanks for storing polyacrylamide powder under nitrogen atmosphere; a gas conveyor unit for carrying the polyacrylamide powder from the first storage tank to the second storage tank by nitrogen gas flow; a constant powder supply unit for receiving the polyacrylamide powder from the second storage tank, metering the powder, and sending the metered powder to a powder dispersion unit for dispersing in water the polyacrylamide powder. A first liquid supply unit sends the dispersion or solution of polyacrylamide powder obtained from the powder dispersion unit to a dissolution tank for completing dissolution of the polyacrylamide; and a second liquid supply unit transfers the polyacrylamide solution from the dissolution tank to a solution storage tank for storing the polyacrylamide solution. A filtration unit is connected in the liquid supply line between the dissolution tank and the solution storage tank; and a nitrogen gas supply system maintains the interiors of these units filled with nitrogen gas at a pressure higher than atmospheric pressure.

• Assignee: Nitto Kagaku Kogyo Kabushiki Kaisha (Japan)
• Patent Number(s): US 4518261
• OSTI ID: 6159159
• Resource Relation: Patent Priority Date: Priority date 25 Mar 1983, Japan; Other Information: PAT-APPL-478884
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
DISPLACEMENT FLUIDS
CHEMICAL PREPARATION
FIELD PRODUCTION EQUIPMENT
OIL WELLS
WATERFLOODING
POLYACRYLATES
DISSOLUTION
POLYAMIDES
CONTROLLED ATMOSPHERES
ENHANCED RECOVERY
FILTERS
NITROGEN
POWDERS
STORAGE
TANKS
ATMOSPHERES
CONTAINERS
ELEMENTS
EQUIPMENT
ESTERS
FLUID INJECTION
FLUIDS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYMERS
POLYVINYLS
RECOVERY
SYNTHESIS
WELLS
020300* - Petroleum- Drilling & Production