CA2349234A1 - Cyclic solvent process for in-situ bitumen and heavy oil production - Google Patents

Cyclic solvent process for in-situ bitumen and heavy oil production Download PDF

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Publication number
CA2349234A1
CA2349234A1 CA002349234A CA2349234A CA2349234A1 CA 2349234 A1 CA2349234 A1 CA 2349234A1 CA 002349234 A CA002349234 A CA 002349234A CA 2349234 A CA2349234 A CA 2349234A CA 2349234 A1 CA2349234 A1 CA 2349234A1
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CA
Canada
Prior art keywords
reservoir
hydrocarbons
solvent
pressure
fraction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002349234A
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French (fr)
Other versions
CA2349234C (en
Inventor
Git B. Lim
P. Richard Kry
J. Pierre Lebel
Mori Y. Kwan
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Imperial Oil Resources Ltd
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Imperial Oil Resources Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Imperial Oil Resources Ltd filed Critical Imperial Oil Resources Ltd
Priority to CA002349234A priority Critical patent/CA2349234C/en
Priority to US10/158,611 priority patent/US6769486B2/en
Publication of CA2349234A1 publication Critical patent/CA2349234A1/en
Application granted granted Critical
Publication of CA2349234C publication Critical patent/CA2349234C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
    • C09K8/594—Compositions used in combination with injected gas, e.g. CO2 orcarbonated gas
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/22—Hydrates inhibition by using well treatment fluids containing inhibitors of hydrate formers

Abstract

A process for recovery of hydrocarbons in a production fluid from an underground reservoir of said hydrocarbons, the process comprising of: (a) injecting a viscosity reducing solvent of a fraction of said hydrocarbons into said reservoir at a pressure in the reservoir of above a liquid/vapor phase change pressure of a fraction of said solvent; said pressure in said reservoir also being sufficient to cause geomechanical formation dilation or pore fluid compression, and then, (b) allowing said solvent to mix with said hydrocarbons under pore dilation conditions, and then, (c) reducing the pressure in said reservoir to below said liquid/vapor phase change pressure of at least said fraction of said solvent thereby evincing solvent gas drive of said fraction of said hydrocarbons from said reservoir;
and then, (d) repeating steps (a) to (c) as required.
CA002349234A 2001-05-31 2001-05-31 Cyclic solvent process for in-situ bitumen and heavy oil production Expired - Lifetime CA2349234C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002349234A CA2349234C (en) 2001-05-31 2001-05-31 Cyclic solvent process for in-situ bitumen and heavy oil production
US10/158,611 US6769486B2 (en) 2001-05-31 2002-05-30 Cyclic solvent process for in-situ bitumen and heavy oil production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002349234A CA2349234C (en) 2001-05-31 2001-05-31 Cyclic solvent process for in-situ bitumen and heavy oil production

Publications (2)

Publication Number Publication Date
CA2349234A1 true CA2349234A1 (en) 2002-11-30
CA2349234C CA2349234C (en) 2004-12-14

Family

ID=4169161

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002349234A Expired - Lifetime CA2349234C (en) 2001-05-31 2001-05-31 Cyclic solvent process for in-situ bitumen and heavy oil production

Country Status (2)

Country Link
US (1) US6769486B2 (en)
CA (1) CA2349234C (en)

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