US2649159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sealing porous formations
Assignee: Sunoco Inc
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Filing: 1951-02-24
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Granted: 1953-08-18
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Expires: 1971-02-24
Abstract
No abstract record available.
Inventors
- 👤 Jackson S Boyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:13
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/516
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
THE METHOD OF SEALING A POROUS FORMATION TRAVERSED BY A WELL BOREHOLE WHICH COMPRISES INTRODUCING INTO SAID BOREHOLE A FLUID SEALING AGENT COMPRISING A GROSS SUSPENSION OF PARTICLES OF SOLID MATERIAL IN LIQUID MATERIAL, SAID SOLID MATERIAL BEING SELECTED FROM THE GROUP CONSISTING OF MELAMINE, UREA, THIOUREA, RESORCINOL, PYROGALLOL, AND CATECHOL, AND SAID LIQUID MATERIAL COMPRISING AN ALDEHYDE CONDENSIBLE WITH SAID SOLID MATERIAL TO FORM A THERMOSETTING RESIN, AND SAID SOLID MATERIAL BEING FILTERABLE FROM SAID SUSPENSION WHEN SAID SUSPENSION IS FORCED INTO A BED OF 10 MESH SAND; APPLYING PRESSURE ON SAID SEALING AGENT AGAINST THE POROUS FORMATION TO FORCE LIQUID MATERIAL FROM THE SEALING AGENT INTO SAID FORMATION, THEREBY FILTERING OUT A COMPACT SHEATH, COMPRISING THE SOLID MATERIAL WETTED WITH THE LIQUID MATERIAL, ON THE BOREHOLE WALL ADJACENT THE FORMATION; AND PERMITTING THE SHEATH TO CONDENSE UNDER THE INFLUENCE OF WELL TEMPERATURE AND PRESSURE TO FORM A HARD RESIN LAYER SUBSTANTIALLY IMPERVIOUS TO DRILLING FLUID.
Claim 2
Independent Claim
157 words
THE METHOD OF SEALING A POROUS FORMATION TRAVERSED BY A WELL BOREHOLE WHICH COMPRISES INTRODUCING INTO SAID BOREHOLE A FLUID SEALING AGENT COMPRISING A GROSS SUSPENSION OF PARTICLES OF SOLID MATERIAL IN LIQUID MATERIAL, SAID SOLID MATERIAL BEING SELECTED FROM THE GROUP CONSISTING OF MELAMINE, UREA, THIOUREA, RESORCINOL, PYROGALLOL, AND CATECHOL, AND SAID LIQUID MATERIAL COMPRISING AN ALDEHYDE CONDENSIBLE WITH SAID SOLID MATERIAL TO FORM A THERMOSETTING RESIN, AND SAID SOLID MATERIAL BEING FILTERABLE FROM SAID SUSPENSION WHEN SAID SUSPENSION IS FORCED INTO A BED OF 10 MESH SAND; APPLYING PRESSURE ON SAID SEALING AGENT AGAINST THE POROUS FORMATION TO FORCE LIQUID MATERIAL FROM THE SEALING AGENT INTO SAID FORMATION, THEREBY FILTERING OUT A COMPACT SHEATH, COMPRISING THE SOLID MATERIAL WETTED WITH THE LIQUID MATERIAL, ON THE BOREHOLE WALL ADJACENT THE FORMATION; AND PERMITTING THE SHEATH TO CONDENSE UNDER THE INFLUENCE OF WELL TEMPERATURE AND PRESSURE TO FORM A HARD RESIN LAYER SUBSTANTIALLY IMPERVIOUS TO DRILLING FLUID.
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) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |