US4301868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method using hydrocarbon foams as well stimulants
Assignee: Baker Hughes Holdings LLC
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Filing: 1979-10-15
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Granted: 1981-11-24
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Expires: 1999-10-15
Abstract
Abstract This invention relates to the use of silicone-induced hydrocarbon foams as well stimulants, for example as illustrated by their use in fracturing well formations, removal of paraffin in wells, removal of condensate hydrocarbons from blocked gas wells, etc.
Inventors
- 👤 Gary A. Scherubel
- 👤 Michael A. Thorne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:09
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/92; C09K8/94; C09K8/52; C09K8/524; C09K8/62; C09K8/70; C09K8/703; E; E21; E21B; E21B21/00; E21B21/14; E21B43/00; E21B43/25; E21B43/26; E21B43/267; Y; Y10; Y10S; Y10S507/00; Y10S507/922; Y10S507/927; Y10S507/929; Y10S507/931
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
75 words
A process of well stimulation, comprising forcing an organo-polysiloxane-induced hydrocarbon foam mixture suitable for use in well stimulation into said well, said hydrocarbon being selected from the group consisting of kerosene, #2 diesel oil, well formation condensate and xylene, said siloxane having a molecular weight of from about 5,770 to about 20,000 and being of a concentration of from about 0.5 to about 2% by volume in said hydrocarbon and injecting nitrogen into said mixture.
Claim 2
Dependent Claim
75 words
A process of well stimulation, comprising forcing an organo-polysiloxane-induced hydrocarbon foam mixture suitable for use in well stimulation into said well, said hydrocarbon being selected from the group consisting of kerosene, #2 diesel oil, well formation condensate and xylene, said siloxane having a molecular weight of from about 5,770 to about 20,000 and being of a concentration of from about 0.5 to about 2% by volume in said hydrocarbon and injecting nitrogen into said mixture.
Claim 3
Dependent Claim
31 words
The process of claim 1 where the well stimulation process is characterized by forcing the silicone-induced foam into the formation so as to fracture the formation and then releasing the force.
Claim 4
Dependent Claim
15 words
The process of claim 2 where 20-40 mesh sand props for the fracture are employed.
Claim 5
Dependent Claim
27 words
The process of claim 1 where the well stimulation process is characterized by forcing the silicone-induced foam into a well containing paraffin and then releasing the force.
Claim 6
Dependent Claim
37 words
The process of claim 1 where the process is characterized by pressure forcing the foam to the bottom of the well bore so as to foam out the 20-40 mesh frac sand blocking or inhibiting well production.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-23 | 1985-05-25 | 1985-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-23 | 1989-05-25 | 1989-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-23 | 1993-05-25 | 1993-11-24 | $7700.00 | Window Closed / Lapsed |