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US3179170A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of treating wells

Assignee: Dow Chemical Co
•
Filing: 1960-05-11
•
Granted: 1965-04-20
•
Expires: 1980-05-11
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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 12:25
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.

References Cited (Backward Citations)

US2287567A Cited
US2681704A Cited
US2797196A Cited
US2785752A Cited
US2879847A Cited
US2877180A Cited
US3028913A Cited
US3021901A Cited

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

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