CA2330094A1 - Steam-assisted gravity drainage process - Google Patents

Steam-assisted gravity drainage process Download PDF

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Publication number
CA2330094A1
CA2330094A1 CA 2330094 CA2330094A CA2330094A1 CA 2330094 A1 CA2330094 A1 CA 2330094A1 CA 2330094 CA2330094 CA 2330094 CA 2330094 A CA2330094 A CA 2330094A CA 2330094 A1 CA2330094 A1 CA 2330094A1
Authority
CA
Canada
Prior art keywords
steam
situ
reservoir
gravity drainage
assisted gravity
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
CA 2330094
Other languages
French (fr)
Other versions
CA2330094C (en
Inventor
Yoshiaki Ito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Canada Oil Sands Ltd
Original Assignee
Japan Canada Oil Sands 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 Japan Canada Oil Sands Ltd filed Critical Japan Canada Oil Sands Ltd
Priority to CA 2330094 priority Critical patent/CA2330094C/en
Publication of CA2330094A1 publication Critical patent/CA2330094A1/en
Application granted granted Critical
Publication of CA2330094C publication Critical patent/CA2330094C/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
    • E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
    • E21B43/2406—Steam assisted gravity drainage [SAGD]

Abstract

Following second phase steam assisted gravity drainage operation using a co-operating pair of steam injection and fluid production wells, steam injection is terminated while flowing fluid production is continued, to draw down the reservoir pressure and flash steam in situ. Then a downhole pump is actuated to produce reservoir fluid and further reduce the reservoir pressure; thereby generating additional steam in situ. As a result of these steps, an additional recovery of oil is realized, using residual heat remaining in the reservoir at the end of steam injection and incremental steam generated in situ by pressure reduction obtained by pumping.
CA 2330094 2001-01-03 2001-01-03 Steam-assisted gravity drainage process Expired - Lifetime CA2330094C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2330094 CA2330094C (en) 2001-01-03 2001-01-03 Steam-assisted gravity drainage process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2330094 CA2330094C (en) 2001-01-03 2001-01-03 Steam-assisted gravity drainage process

Publications (2)

Publication Number Publication Date
CA2330094A1 true CA2330094A1 (en) 2002-07-03
CA2330094C CA2330094C (en) 2006-04-18

Family

ID=4168027

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2330094 Expired - Lifetime CA2330094C (en) 2001-01-03 2001-01-03 Steam-assisted gravity drainage process

Country Status (1)

Country Link
CA (1) CA2330094C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8327936B2 (en) 2008-05-22 2012-12-11 Husky Oil Operations Limited In situ thermal process for recovering oil from oil sands

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8327936B2 (en) 2008-05-22 2012-12-11 Husky Oil Operations Limited In situ thermal process for recovering oil from oil sands

Also Published As

Publication number Publication date
CA2330094C (en) 2006-04-18

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Effective date: 20210104