Thermal acidization and recovery process for recovering viscous petroleum
Patent
·
OSTI ID:865053
A thermal acidization and recovery process for increasing production of heavy viscous petroleum crude oil and synthetic fuels from subterranean hydrocarbon formations containing clay particles creating adverse permeability effects is described. The method comprises injecting a thermal vapor stream through a well bore penetrating such formations to clean the formation face of hydrocarbonaceous materials which restrict the flow of fluids into the petroleum-bearing formation. Vaporized hydrogen chloride is then injected simultaneously to react with calcium and magnesium salts in the formation surrounding the bore hole to form water soluble chloride salts. Vaporized hydrogen fluoride is then injected simultaneously with its thermal vapor to dissolve water-sensitive clay particles thus increasing permeability. Thereafter, the thermal vapors are injected until the formation is sufficiently heated to permit increased recovery rates of the petroleum.
- Research Organization:
- Carmel Energy, Inc., Houston, TX (United States)
- Sponsoring Organization:
- US Energy Research and Development Administration (ERDA)
- DOE Contract Number:
- AC03-78ET12355
- Assignee:
- Carmel Energy, Inc. (Houston, TX)
- Patent Number(s):
- 4,454,917
- Application Number:
- 06/317,338
- OSTI ID:
- 865053
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/166/
acidization
adverse
bearing formation
bore
bore penetrating
calcium
carbonaceous material
carbonaceous materials
chloride
chloride salt
chloride salts
clay
clean
comprises
containing
creating
crude
crude oil
described
dissolve
effects
flow
fluids
fluoride
form
form water
formation
formation surrounding
formations
formations containing
fuels
heated
heavy
hydrocarbon
hydrocarbon formations
hydrocarbonaceous
hydrocarbonaceous materials
hydrogen
hydrogen chloride
hydrogen fluoride
increased
increasing
injected
injecting
magnesium
materials
method
method comprise
method comprises
oil
particles
penetrating
permeability
permit
petroleum
petroleum-bearing
process
production
rates
react
recovering
recovering viscous
recovery
recovery process
restrict
salts
simultaneously
soluble
stream
subterranean
sufficiently
sufficiently heated
surrounding
synthetic
synthetic fuels
thereafter
thermal
thermal acidization
thermal vapor
vapor
vapor stream
vaporized
vapors
viscous
viscous petroleum
water
water soluble
water-sensitive
acidization
adverse
bearing formation
bore
bore penetrating
calcium
carbonaceous material
carbonaceous materials
chloride
chloride salt
chloride salts
clay
clean
comprises
containing
creating
crude
crude oil
described
dissolve
effects
flow
fluids
fluoride
form
form water
formation
formation surrounding
formations
formations containing
fuels
heated
heavy
hydrocarbon
hydrocarbon formations
hydrocarbonaceous
hydrocarbonaceous materials
hydrogen
hydrogen chloride
hydrogen fluoride
increased
increasing
injected
injecting
magnesium
materials
method
method comprise
method comprises
oil
particles
penetrating
permeability
permit
petroleum
petroleum-bearing
process
production
rates
react
recovering
recovering viscous
recovery
recovery process
restrict
salts
simultaneously
soluble
stream
subterranean
sufficiently
sufficiently heated
surrounding
synthetic
synthetic fuels
thereafter
thermal
thermal acidization
thermal vapor
vapor
vapor stream
vaporized
vapors
viscous
viscous petroleum
water
water soluble
water-sensitive