US2809699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well casing protected against electrolytic action
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-08-27
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Granted: 1957-10-15
•
Expires: 1974-08-27
Abstract
No abstract record available.
Inventors
- 👤 Jack L Battle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:51
CPC Classifications
F; F16; F16L; F16L25/00; F16L25/02; F16L25/021; E; E21; E21B; E21B17/00; E21B17/02; E21B17/028; E21B17/0285; E21B17/04; E21B17/042; Y; Y10; Y10S; Y10S285/00; Y10S285/923; Y10S415/00; Y10S415/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A METHOD FOR CASING A BOREHOLE, PENETRATING THROUGH A PLURALITY OF SUBSURFACE FORMATIONS WHICH COMPRISES THE STEPS OF LOGGING SAID BOREHOLE TO DETERMINE POINTS WHERE A DIFFERENCE OF POTENTIAL EXISTS BETWEEN ADJACENT FORMATIONS; MAKING UP SECTIONS OF CASING CONSISTNG OF LENGTHS OF METAL PIPE WITH THE ENDS OF THE PIPE SECURED TOGETHER BY METAL COUPLINGS, SECURING TOGETHER ADJACENT ENDS OF SECTIONS OF PIPE BY ELECTRICALLY INSULATED COUPLINGS WHICH MECHANICALLY SECURE ADJACENT ENDS OF SECTIONS WHILE ELECTRICALLY INSULATING SAID SECTIONS, LOWERING INTO THE WELL THE COMPLETE CASING MADE UP OF THE SECTIONS OF PIPE WITH ENDS CONNECTED TOGETHER BY INSULATING COUPLINGS, POSITIONING AND PERMANENTLY ANCHORING SAID COMPLETE CASING IN THE WELL WITH THE INSULATING COUPLINGS AT SAID
Claim 2
Independent Claim
116 words
A METHOD FOR CASING A BOREHOLE, PENETRATING THROUGH A PLURALITY OF SUBSURFACE FORMATIONS WHICH COMPRISES THE STEPS OF LOGGING SAID BOREHOLE TO DETERMINE POINTS WHERE A DIFFERENCE OF POTENTIAL EXISTS BETWEEN ADJACENT FORMATIONS; MAKING UP SECTIONS OF CASING CONSISTNG OF LENGTHS OF METAL PIPE WITH THE ENDS OF THE PIPE SECURED TOGETHER BY METAL COUPLINGS, SECURING TOGETHER ADJACENT ENDS OF SECTIONS OF PIPE BY ELECTRICALLY INSULATED COUPLINGS WHICH MECHANICALLY SECURE ADJACENT ENDS OF SECTIONS WHILE ELECTRICALLY INSULATING SAID SECTIONS, LOWERING INTO THE WELL THE COMPLETE CASING MADE UP OF THE SECTIONS OF PIPE WITH ENDS CONNECTED TOGETHER BY INSULATING COUPLINGS, POSITIONING AND PERMANENTLY ANCHORING SAID COMPLETE CASING IN THE WELL WITH THE INSULATING COUPLINGS AT SAID
References Cited (Backward Citations)
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Cited
US1859311A
Cited
US1804078A
Cited
US2487554A
Cited
US2628209A
Cited
US2667465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |