US3172473A
Expired / Lapsed
US
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Method of improving well flow
Assignee: CROWLEY TAR PRODUCTS Co I
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Filing: 1962-06-28
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Granted: 1965-03-09
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Expires: 1982-06-28
Abstract
No abstract record available.
Inventors
- 👤 Daniel L Crowley
- 👤 Frank J Smith
- 👤 William J Jennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:49
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/52; C09K8/524; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10S507/929; Y10S507/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
THE METHOD OF TREATING A WELL TO FACILITATE THE PRODUCTION THEREOF, THE STEP WHICH COMPRISES INTRODUCING INTO THE WELL BORE A LIQUID AROMATIC FRACTION CONTAINING AT LEAST 15% ALKYL NAPHTHALENE, IN WHICH THE ALKYL GROUP CONTAINS FROM 1 TO 3 CARBON ATOMS, MAINTAINING SAID LIQUID AROMATIC FRACTION IN THE WELL IN CONTACT WITH SOLID MATERIAL WHICH TENDS TO BLOCK FLOW FROM THE WELL UNTIL SUCH SOLID MATERIAL IS DISPERSED IN SAID LIQUID AROMATIC FRACTION, AND THEREAFTER WITHDRAWING THE DISPERSION THUS PRODUCED.
Claim 2
Independent Claim
81 words
THE METHOD OF TREATING A WELL TO FACILITATE THE PRODUCTION THEREOF, THE STEP WHICH COMPRISES INTRODUCING INTO THE WELL BORE A LIQUID AROMATIC FRACTION CONTAINING AT LEAST 15% ALKYL NAPHTHALENE, IN WHICH THE ALKYL GROUP CONTAINS FROM 1 TO 3 CARBON ATOMS, MAINTAINING SAID LIQUID AROMATIC FRACTION IN THE WELL IN CONTACT WITH SOLID MATERIAL WHICH TENDS TO BLOCK FLOW FROM THE WELL UNTIL SUCH SOLID MATERIAL IS DISPERSED IN SAID LIQUID AROMATIC FRACTION, AND THEREAFTER WITHDRAWING THE DISPERSION THUS PRODUCED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |