US2806530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for cementing wells
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1955-11-07
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Granted: 1957-09-17
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Expires: 1975-11-07
Abstract
No abstract record available.
Inventors
- 👤 George W Binkley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:20
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A METHOD FOR ACCELERATING STRENGTH DEVELOPMENT OF CEMENTS EMPLOYED IN WELL COMPLETION OPERATIONS IN WHICH A LOW FLUID CEMENT IS DEPOSITED IN THE WELL TO FROM AN UNSET FILTER CAKE CONSISTING ESSENTIALLY OF SAID CEMENT AND EXCESS FLUID CEMENT REMOVED FROM THE WELL WHICH COMPRISES CONTACTING THE UNSET CEMENT FILTER CAKE IN THE WELL IMMEDIATELY AFTER REMOVAL OF SAID EXCESS FLUID CEMENT WITH AN AQUEOUS SOLUTION OF HYDROCHLORIC ACID CONTAINING NO MORE THAN 5% HCI AND THEN APPLYING PRESSURE TO SAID SOLUTION TO FORCE AT LEAST A PORTION OF THE SOLUTION THROUGH THE CEMENT FILTER CAKE TO CAUSE SAID FILTER CAKE TO SET AND DEVELOP EARLY STRENGTH.
Claim 2
Independent Claim
107 words
A METHOD FOR ACCELERATING STRENGTH DEVELOPMENT OF CEMENTS EMPLOYED IN WELL COMPLETION OPERATIONS IN WHICH A LOW FLUID CEMENT IS DEPOSITED IN THE WELL TO FROM AN UNSET FILTER CAKE CONSISTING ESSENTIALLY OF SAID CEMENT AND EXCESS FLUID CEMENT REMOVED FROM THE WELL WHICH COMPRISES CONTACTING THE UNSET CEMENT FILTER CAKE IN THE WELL IMMEDIATELY AFTER REMOVAL OF SAID EXCESS FLUID CEMENT WITH AN AQUEOUS SOLUTION OF HYDROCHLORIC ACID CONTAINING NO MORE THAN 5% HCI AND THEN APPLYING PRESSURE TO SAID SOLUTION TO FORCE AT LEAST A PORTION OF THE SOLUTION THROUGH THE CEMENT FILTER CAKE TO CAUSE SAID FILTER CAKE TO SET AND DEVELOP EARLY STRENGTH.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |