US3167122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for repairing casing
Assignee: Pan American Petroleum Corp
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Filing: 1962-05-04
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Granted: 1965-01-26
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Expires: 1982-05-04
Abstract
No abstract record available.
Inventors
- 👤 Harold M Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:42
CPC Classifications
E; E21; E21B; E21B29/00; E21B29/10; Y; Y10; Y10S; Y10S29/00; Y10S29/034; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49732; Y10T29/49742; Y10T29/49805; Y10T29/49806
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A METHOD OF EXPANDING A METAL LINER IN A SUBSTANTIALLY CYLINDRICAL HOLLOW BODY COMPRISING: PLACING A ROD HAVING AN EXPANDER TOOL NEAR ONE END ALONG THE AXIS OF SAID LINER, ATTACHING SAID LINER TO SAID ROD ABOVE SAID EXPANDER TOOL, ENCLOSING SAID LINER WITH A LIQUID-TIGHT SHEATH, PLACING AN ELONGATED EXPLOSIVE CHARGE IN SAID LINER, FILLING SAID SHEATH WITH A LIQUID, ATTACHING A WIRE LINE TO SAID ROD ABOVE SAID LINER, POSITIONING SAID ROD AND LINER IN SAID HOLLOW BODY, DETONATING SAID EXPLOSIVE CHARGE TO EXPAND AND ANCHOR SAID LINER IN SAID HOLLOW BODY, THEN PULLING SAID EXPANDER TOOL THROUGH SAID LINER TO COMPLETE THE EXPANSION THEREOF.
Claim 2
Independent Claim
107 words
A METHOD OF EXPANDING A METAL LINER IN A SUBSTANTIALLY CYLINDRICAL HOLLOW BODY COMPRISING: PLACING A ROD HAVING AN EXPANDER TOOL NEAR ONE END ALONG THE AXIS OF SAID LINER, ATTACHING SAID LINER TO SAID ROD ABOVE SAID EXPANDER TOOL, ENCLOSING SAID LINER WITH A LIQUID-TIGHT SHEATH, PLACING AN ELONGATED EXPLOSIVE CHARGE IN SAID LINER, FILLING SAID SHEATH WITH A LIQUID, ATTACHING A WIRE LINE TO SAID ROD ABOVE SAID LINER, POSITIONING SAID ROD AND LINER IN SAID HOLLOW BODY, DETONATING SAID EXPLOSIVE CHARGE TO EXPAND AND ANCHOR SAID LINER IN SAID HOLLOW BODY, THEN PULLING SAID EXPANDER TOOL THROUGH SAID LINER TO COMPLETE THE EXPANSION THEREOF.
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) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |