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Title: Topical viscosity control for light hydrocarbon displacing fluids in petroleum recovery and in fracturing fluids for well stimulation

Abstract

Solvent-type flooding fluids comprising light hydrocarbons in the range of ethane to hexane (and mixtures thereof) are used to displace crude oil in formations having temperatures of about 20 degrees to about 150 degrees Centigrade and pressures above about 650 psi, the light hydrocarbons having dissolved therein from about 0.05% to about 3% of an organotin compound of the formula R.sub.3 SnF where each R is independently an alkyl, aryl or alkyaryl group from 3 to 12 carbon atoms. Under the pressures and temperatures described, the organotin compounds become pentacoordinated and linked through the electronegative bridges, forming polymers within the light hydrocarbon flooding media to render them highly viscous. Under ambient conditions, the viscosity control agents will not readily be produced from the formation with either crude oil or water, since they are insoluble in the former and only sparingly soluble in the latter.

Inventors:
 [1];  [1]
  1. Socorro, NM
Issue Date:
Research Org.:
New Mexico Tech. Research Foundation (Socorro, NM)
OSTI Identifier:
865960
Patent Number(s):
4607696
Assignee:
New Mexico Tech. Research Foundation (Socorro, NM)
DOE Contract Number:  
FG21-84MC21136
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
topical; viscosity; control; light; hydrocarbon; displacing; fluids; petroleum; recovery; fracturing; stimulation; solvent-type; flooding; comprising; hydrocarbons; range; ethane; hexane; mixtures; displace; crude; oil; formations; temperatures; 20; degrees; 150; centigrade; pressures; 650; psi; dissolved; therein; 05; organotin; compound; formula; snf; independently; alkyl; aryl; alkyaryl; 12; carbon; atoms; described; compounds; pentacoordinated; linked; electronegative; bridges; forming; polymers; media; render; highly; viscous; ambient; conditions; agents; readily; produced; formation; water; insoluble; former; sparingly; soluble; latter; ambient conditions; light hydrocarbon; dissolved therein; carbon atoms; degrees centigrade; carbon atom; crude oil; light hydrocarbons; sparingly soluble; petroleum recovery; control agent; highly viscous; /166/507/

Citation Formats

Heller, John P, and Dandge, Dileep K. Topical viscosity control for light hydrocarbon displacing fluids in petroleum recovery and in fracturing fluids for well stimulation. United States: N. p., 1986. Web.
Heller, John P, & Dandge, Dileep K. Topical viscosity control for light hydrocarbon displacing fluids in petroleum recovery and in fracturing fluids for well stimulation. United States.
Heller, John P, and Dandge, Dileep K. Wed . "Topical viscosity control for light hydrocarbon displacing fluids in petroleum recovery and in fracturing fluids for well stimulation". United States. https://www.osti.gov/servlets/purl/865960.
@article{osti_865960,
title = {Topical viscosity control for light hydrocarbon displacing fluids in petroleum recovery and in fracturing fluids for well stimulation},
author = {Heller, John P and Dandge, Dileep K},
abstractNote = {Solvent-type flooding fluids comprising light hydrocarbons in the range of ethane to hexane (and mixtures thereof) are used to displace crude oil in formations having temperatures of about 20 degrees to about 150 degrees Centigrade and pressures above about 650 psi, the light hydrocarbons having dissolved therein from about 0.05% to about 3% of an organotin compound of the formula R.sub.3 SnF where each R is independently an alkyl, aryl or alkyaryl group from 3 to 12 carbon atoms. Under the pressures and temperatures described, the organotin compounds become pentacoordinated and linked through the electronegative bridges, forming polymers within the light hydrocarbon flooding media to render them highly viscous. Under ambient conditions, the viscosity control agents will not readily be produced from the formation with either crude oil or water, since they are insoluble in the former and only sparingly soluble in the latter.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {1}
}

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