Hydrocarbon soluble polymer complexes useful as viscosifiers in fracturing operations
A process is described for fracturing a subterranean formation surrounding a gas or oil well which comprises injecting into the subterranean formation under hydraulic pressure a fluid comprising about 0.01 to about 25 weight percent of a water insoluble polymer complex dissolved in a solvent system comprising a nonpolar organic liquid. The polymer complex comprises the interaction product of a metal neutralized sulfonated polymer and an amine containing polymer. The sulfonate content of the sulfonated polymer is about 4 meq. per 100 grams of polymer to about 100 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 organic liquid is selected from the group consisting of paraffinic hydrocarbons, naphthenic hydrocarbons, aromatic hydrocarbons, ketones, chlorinated aliphatic hydrocarbons, cyclic aliphatic ethers, aliphatic ethers and organic aliphatic esters and mixtures thereof. The amine containing polymer is a copolymer of vinyl-pyridine with other vinyl monomers which are selected from the group consisting of acrylates, methacrylates, alkyl acrylates, alkyl methacrylates, N-alkylacrylamide and N-alkylmethacrylamides and mixtures thereof, the acrylates or methacrylates, etc. having from about 6 to about 26 carbon atoms.
- Assignee:
- Exxon Research and Engineering Co., Florham Park, NJ
- Patent Number(s):
- US 4615393
- OSTI ID:
- 5164780
- Resource Relation:
- Patent File Date: Filed date 19 Nov 1984
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
HYDRAULIC FRACTURING
ADDITIVES
NATURAL GAS WELLS
OIL WELLS
ACRYLATES
AMINES
AROMATICS
CHLORINATED ALIPHATIC HYDROCARBONS
COPOLYMERS
CYCLOALKANES
DISSOLUTION
ENHANCED RECOVERY
ESTERS
ETHERS
FLUID INJECTION
KETONES
MIXTURES
NATURAL GAS
ORGANIC SOLVENTS
PARAFFIN
PETROLEUM
PYRIDINES
QUANTITY RATIO
SOLUBILITY
SULFONATES
SULFONATION
VINYL MONOMERS
VISCOSITY
WELL STIMULATION
ALKANES
AZINES
CARBOXYLIC ACID SALTS
CHEMICAL REACTIONS
COMMINUTION
DISPERSIONS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FRACTURING
FUEL GAS
FUELS
GAS FUELS
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
MONOMERS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
OTHER ORGANIC COMPOUNDS
POLYMERS
RECOVERY
SOLVENTS
STIMULATION
WAXES
WELLS
020300* - Petroleum- Drilling & Production
030900 - Natural Gas- Artificial Stimulation
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