Patent US3179170A successfully refreshed from Google Patents.
US3179170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating wells
Assignee: Dow Chemical Co
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Filing: 1960-05-11
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Granted: 1965-04-20
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Expires: 1980-05-11
Abstract
No abstract record available.
Inventors
- 👤 Fred W Burtch
- 👤 Sutherlin Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:32
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; Y; Y10; Y10S; Y10S507/00; Y10S507/922; Y10S507/933
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
222 words
THE METHOD OF EMPLACING A LIQUID TREATING AGENT INTO THE CRACKS, FISSURES AND PORES OF A SUBTERRANEAN FLUIDBEARING FORMATION TO BE TREATED WHICH CONSISTS ESSENTIALLY OF (1) ADMIXING A SORBATE-TYPE LIQUID TREATING AGENT, SELECTED FROM THE CLASS CONSISTING OF DEMULSIFIERS, CHELATING AGENTS, WETTING AGENTS, ANTI-FOAMING AGENTS, SEQUESTERING AGENTS, ACIDIZING AGENTS, AND INHIBITORS TO THE DEPOSITION OF PARAFFIN AND TO THE CORROSIVITY OF ACIDS, WITH A VOLATILE ORGANIC SOLVENT; (2) ADMIXING THE THUS PREPARED SOLVENTTREATED LIQUID TREATING AGENT WITH A SORBENT PARTICULATE SOLID MATERIAL OF A PARTICLE SIZE SUCH THAT IT WILL SUBSTANTIALLY ALL PASS THROUGH A NUMBER 10 MEASH SIEVE BUT WILL BE RETAINED ON A NUMBER 325 MESH SIEVEE, SELECTED FROM THE CLASS CONSISTING OF FULLER''S EARTH, MONTMORILLONITE CLAYS, ACID-TREATED CLAYS, BAUXITE, FLUORITE, ACTIVAATED ALUMINA, BONE CHAR, COKE, CHARCOAL, MAGNESIUM OXIDE, PERLITE, MAGNESIUM HYDROXIDE, SILICA GEL, PUMICE STONE AND ZEOLITE; (3) DRYING THE MIXTURE THUS MADE TO REMOVE A SUBSTANTIAL PORTION OF THE ORGANIC SOLVENT TO MAKE A FLOWABLE INTIMATE INTERMIXTURE FROM WHICH THE SORBATETYPE LIQUID TREATING AGENT WILL GRADUALLY DESORB WHEN DEPOSITED IN A SUBTERRANEAN FORMATION; AND (4) INJECTING THE INTERMIXTURE SO MADE INTO THE FORMATION AND DEPOSITING AT LEAST A PORTION OF SAID INTERMIXTURE THEREIN WHEREBY SAID LIQUID TREATING AGENT IS THEREAFTER GRADUALLY DESORBED FROM THE PARTICULATE SOLID MATERIAL TO IMPROVE AND FACILITATE PRODUCTION OF FLUIDS FROM THE FORMATION.
Claim 2
Independent Claim
222 words
THE METHOD OF EMPLACING A LIQUID TREATING AGENT INTO THE CRACKS, FISSURES AND PORES OF A SUBTERRANEAN FLUIDBEARING FORMATION TO BE TREATED WHICH CONSISTS ESSENTIALLY OF (1) ADMIXING A SORBATE-TYPE LIQUID TREATING AGENT, SELECTED FROM THE CLASS CONSISTING OF DEMULSIFIERS, CHELATING AGENTS, WETTING AGENTS, ANTI-FOAMING AGENTS, SEQUESTERING AGENTS, ACIDIZING AGENTS, AND INHIBITORS TO THE DEPOSITION OF PARAFFIN AND TO THE CORROSIVITY OF ACIDS, WITH A VOLATILE ORGANIC SOLVENT; (2) ADMIXING THE THUS PREPARED SOLVENTTREATED LIQUID TREATING AGENT WITH A SORBENT PARTICULATE SOLID MATERIAL OF A PARTICLE SIZE SUCH THAT IT WILL SUBSTANTIALLY ALL PASS THROUGH A NUMBER 10 MEASH SIEVE BUT WILL BE RETAINED ON A NUMBER 325 MESH SIEVEE, SELECTED FROM THE CLASS CONSISTING OF FULLER''S EARTH, MONTMORILLONITE CLAYS, ACID-TREATED CLAYS, BAUXITE, FLUORITE, ACTIVAATED ALUMINA, BONE CHAR, COKE, CHARCOAL, MAGNESIUM OXIDE, PERLITE, MAGNESIUM HYDROXIDE, SILICA GEL, PUMICE STONE AND ZEOLITE; (3) DRYING THE MIXTURE THUS MADE TO REMOVE A SUBSTANTIAL PORTION OF THE ORGANIC SOLVENT TO MAKE A FLOWABLE INTIMATE INTERMIXTURE FROM WHICH THE SORBATETYPE LIQUID TREATING AGENT WILL GRADUALLY DESORB WHEN DEPOSITED IN A SUBTERRANEAN FORMATION; AND (4) INJECTING THE INTERMIXTURE SO MADE INTO THE FORMATION AND DEPOSITING AT LEAST A PORTION OF SAID INTERMIXTURE THEREIN WHEREBY SAID LIQUID TREATING AGENT IS THEREAFTER GRADUALLY DESORBED FROM THE PARTICULATE SOLID MATERIAL TO IMPROVE AND FACILITATE PRODUCTION OF FLUIDS FROM THE FORMATION.
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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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |