Hydrocarbon soluble polymer complexes useful as viscosifiers in fracturing operations

Patent · Tue Apr 01 00:00:00 EST 1986

OSTI ID:5848173

Lundberg, R D; Peiffer, D G; Sedillo, L P; Newlove, J C

This patent describes a process for fracturing a subterranean formation surrounding a gas or oil well. This process consists of injecting into the subterranean formation under fracturing pressure a fluid comprising about 0.01 to about 25 weight percent of a polymer complex dissolved in a solvent system of a nonpolar organic liquid hydrocarbon having a solubility parameter of less then 9.5. The polymer complex consists of the interaction product of a sulfonated polymer and an amine containing polymer which is hydrocarbon soluble, wherein the sulfonated polymer is selected from the group consisting of sulfonated polystyrene, sulfonated EPDM terpolymer, sulfonated polyisoprene, sulfonated ethylene, sulfonated propylene, sulfonated ethylene/propylene copolymers, sulfonated styrene/acrylonitrile copolymers and sulfonated styrene/methyl methacrylate copolymers. The sulfonate content of the sulfonated polymer is about 4 meq. per 100 gram of polymer to about 200 meq. per 100 gram of polymer and the basic nitrogen content of the amine containing polymer is about 4 meq. per 100 gram of polymer to about 500 meq. per 100 gram of polymer. The amine containing polymer is a copolymer of vinyl pyridine with other vinyl monomers and the number average molecular weight of the amine containg polymer is about 10,000 to about 10,000,000, and the number average molecular weight of the sulfonated polymer is from 1,000 to 10,000,000. The mole ratio of the sulfonated polymer to the amine-containing polymer is about 1:15 to 15:1.

• Assignee: Exxon Res. and Eng. Co., Florham Park, NJ
• Patent Number(s): US 4579671
• OSTI ID: 5848173
• Resource Relation: Patent File Date: Filed date 19 Sep 1984
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
FRACTURING FLUIDS
CHEMICAL COMPOSITION
NATURAL GAS WELLS
HYDRAULIC FRACTURING
OIL WELLS
ACRYLONITRILE
COPOLYMERS
ENHANCED RECOVERY
ETHYLENE
METHYL METHACRYLATE
NATURAL GAS
PETROLEUM
POLYSTYRENE
PROPYLENE
SOLUBILITY
SOLVENTS
SULFONATION
VISCOSITY
WELL STIMULATION
ALKENES
CARBOXYLIC ACID ESTERS
CHEMICAL REACTIONS
COMMINUTION
ENERGY SOURCES
ESTERS
FLUIDS
FOSSIL FUELS
FRACTURING
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROCARBONS
MATERIALS
METHACRYLIC ACID ESTERS
NITRILES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYMERS
POLYOLEFINS
POLYVINYLS
RECOVERY
STIMULATION
SYNTHETIC MATERIALS
WELLS
020300* - Petroleum- Drilling & Production
030900 - Natural Gas- Artificial Stimulation
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