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Title: Single well surfactant test to evaluate surfactant floods using multi tracer method

Abstract

Data useful for evaluating the effectiveness of or designing an enhanced recovery process said process involving mobilizing and moving hydrocarbons through a hydrocarbon bearing subterranean formation from an injection well to a production well by injecting a mobilizing fluid into the injection well, comprising (a) determining hydrocarbon saturation in a volume in the formation near a well bore penetrating formation, (b) injecting sufficient mobilizing fluid to mobilize and move hydrocarbons from a volume in the formation near the well bore, and (c) determining the hydrocarbon saturation in a volume including at least a part of the volume of (b) by an improved single well surfactant method comprising injecting 2 or more slugs of water containing the primary tracer separated by water slugs containing no primary tracer. Alternatively, the plurality of ester tracers can be injected in a single slug said tracers penetrating varying distances into the formation wherein the esters have different partition coefficients and essentially equal reaction times. The single well tracer method employed is disclosed in U.S. Pat. No. 3,623,842. This method designated the single well surfactant test (SWST) is useful for evaluating the effect of surfactant floods, polymer floods, carbon dioxide floods, micellar floods, caustic floods andmore » the like in subterranean formations in much less time and at much reduced cost compared to conventional multiwell pilot tests.« less

Inventors:
 [1]
  1. Ponca City, OK
Issue Date:
Research Org.:
CONOCO INC
OSTI Identifier:
863426
Patent Number(s):
4168746
Assignee:
Continental Oil Company (Ponca City, OK)
Patent Classifications (CPCs):
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
DOE Contract Number:  
AC03-78SF01424
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
single; surfactant; evaluate; floods; multi; tracer; method; data; useful; evaluating; effectiveness; designing; enhanced; recovery; process; involving; mobilizing; moving; hydrocarbons; hydrocarbon; bearing; subterranean; formation; injection; production; injecting; fluid; comprising; determining; saturation; volume; near; bore; penetrating; sufficient; mobilize; move; including; improved; slugs; water; containing; primary; separated; alternatively; plurality; ester; tracers; injected; slug; varying; distances; esters; partition; coefficients; essentially; equal; reaction; times; employed; disclosed; 623; 842; designated; swst; effect; polymer; carbon; dioxide; micellar; caustic; formations; time; reduced; cost; compared; conventional; multiwell; pilot; tests; tracer method; essentially equal; subterranean formation; method comprising; carbon dioxide; water containing; recovery process; process involving; surfactant floods; method employed; reaction time; enhanced recovery; subterranean formations; bore penetrating; moving hydrocarbons; evaluate surfactant; method employ; involving mobilizing; data useful; /166/73/436/

Citation Formats

Sheely, Clyde Q. Single well surfactant test to evaluate surfactant floods using multi tracer method. United States: N. p., 1979. Web.
Sheely, Clyde Q. Single well surfactant test to evaluate surfactant floods using multi tracer method. United States.
Sheely, Clyde Q. Mon . "Single well surfactant test to evaluate surfactant floods using multi tracer method". United States. https://www.osti.gov/servlets/purl/863426.
@article{osti_863426,
title = {Single well surfactant test to evaluate surfactant floods using multi tracer method},
author = {Sheely, Clyde Q},
abstractNote = {Data useful for evaluating the effectiveness of or designing an enhanced recovery process said process involving mobilizing and moving hydrocarbons through a hydrocarbon bearing subterranean formation from an injection well to a production well by injecting a mobilizing fluid into the injection well, comprising (a) determining hydrocarbon saturation in a volume in the formation near a well bore penetrating formation, (b) injecting sufficient mobilizing fluid to mobilize and move hydrocarbons from a volume in the formation near the well bore, and (c) determining the hydrocarbon saturation in a volume including at least a part of the volume of (b) by an improved single well surfactant method comprising injecting 2 or more slugs of water containing the primary tracer separated by water slugs containing no primary tracer. Alternatively, the plurality of ester tracers can be injected in a single slug said tracers penetrating varying distances into the formation wherein the esters have different partition coefficients and essentially equal reaction times. The single well tracer method employed is disclosed in U.S. Pat. No. 3,623,842. This method designated the single well surfactant test (SWST) is useful for evaluating the effect of surfactant floods, polymer floods, carbon dioxide floods, micellar floods, caustic floods and the like in subterranean formations in much less time and at much reduced cost compared to conventional multiwell pilot tests.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {1}
}

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