Patent US3179172A successfully refreshed from Google Patents.
US3179172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled viscosity fracturing fluids
Assignee: Gulf Research and Development Co
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Filing: 1961-11-14
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Granted: 1965-04-20
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Expires: 1981-11-14
Abstract
No abstract record available.
Inventors
- 👤 Ronald L Reed
- 👤 Joseph J Taber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:57
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; Y; Y10; Y10S; Y10S507/00; Y10S507/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A METHOD OF FRACTURING A SUBSURFACEFORMATION PENETRATED BY A WELL, COMPRISING DISPLACING DOWN A WELL AND INTO CONTACT WITH THE SUBSURFACE FORMATION A FRACTURING LIQUID CONSISTING ESSENTIALLY OF WATER, AN ALKYLOLAMIDE, A FATTY ACID COMPOUND SELECTED FROM THE GROUP CONSISTING OF FATTY ACIDS HAVING 8 TO 18 CARBON ATOMS PER MOLECULE AND SOAPS OF SUCH FATTY ACIDS, AND A STRONG ELECTROLYTE COMPRISING A HIGHLY IONIZED INORGANIC COMPOUND AT SUBSTANTIALLY THE CRITICAL CONCENTRATION GIVING THE FRACTURING LIQUID ITS MAXIMUM VISCOSITY; APPLYING A PRESSURE TO THE FRACTURING LIQUID ADEQUATE TO OVERCOME THE OVERBURDEN PRESSURE AND STRENGTH OF THE FORMATION TO FRACTURE THE FORMATION; DISPLACING FRACTURING LIQUID INTO THE FRACTURE TO EXTEND THE FRACTURE IN THE FORMATION; MIXING AN AQUEOUS SOLUTION CONTAINING A CONCENTRATION OF HIGHLY IONIZED INORGANIC COMPOUND DIFFERENT FROM THE CONCENTRATION IN THE FRACTURING LIQUID WITH THE FRACTURING LIQUID IN THE FRACTURE TO DECREASE SUBSTANTIALLYH THE VIS-
Claim 2
Independent Claim
146 words
A METHOD OF FRACTURING A SUBSURFACEFORMATION PENETRATED BY A WELL, COMPRISING DISPLACING DOWN A WELL AND INTO CONTACT WITH THE SUBSURFACE FORMATION A FRACTURING LIQUID CONSISTING ESSENTIALLY OF WATER, AN ALKYLOLAMIDE, A FATTY ACID COMPOUND SELECTED FROM THE GROUP CONSISTING OF FATTY ACIDS HAVING 8 TO 18 CARBON ATOMS PER MOLECULE AND SOAPS OF SUCH FATTY ACIDS, AND A STRONG ELECTROLYTE COMPRISING A HIGHLY IONIZED INORGANIC COMPOUND AT SUBSTANTIALLY THE CRITICAL CONCENTRATION GIVING THE FRACTURING LIQUID ITS MAXIMUM VISCOSITY; APPLYING A PRESSURE TO THE FRACTURING LIQUID ADEQUATE TO OVERCOME THE OVERBURDEN PRESSURE AND STRENGTH OF THE FORMATION TO FRACTURE THE FORMATION; DISPLACING FRACTURING LIQUID INTO THE FRACTURE TO EXTEND THE FRACTURE IN THE FORMATION; MIXING AN AQUEOUS SOLUTION CONTAINING A CONCENTRATION OF HIGHLY IONIZED INORGANIC COMPOUND DIFFERENT FROM THE CONCENTRATION IN THE FRACTURING LIQUID WITH THE FRACTURING LIQUID IN THE FRACTURE TO DECREASE SUBSTANTIALLYH THE VIS-
References Cited (Backward Citations)
CA547878A
Cited
US2596845A
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 |