US2803306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for increasing permeability of underground formation
Assignee: Halliburton Oil Well Cementing Co
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Filing: 1955-04-13
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Granted: 1957-08-20
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Expires: 1975-04-13
Abstract
No abstract record available.
Inventors
- 👤 Wayne F Hower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:28
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/72; C09K8/74; C09K8/78; Y; Y10; Y10S; Y10S507/00; Y10S507/933
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A PROCESS FOR RESTORING OR INCREASING THE PERMEABILITY OF AN UNDERGROUND FORMATION OR OTHER STRUCTURE TRAVERSED BY A WELL BOREE AND INCLUDING SEVERAL ZONES HAVING VARYING PERMEABILITIES, THE STEPS OF INTRODUCING INTO SAID WELL BORE AND THENCE INTO CONTACT WITH SAID STRUCTURE A TREATING FLUID CONTAINING HYDROCHLORIC ACID AND HAVING DISPERSED THEREIN A QUANTITY OF DISCRETE PARTICLES OF AN OIL-SOLUBLE MATERIAL SELECTED FROM THE CLASS CONSISTING OF GILSONITE, NAPHTHALENE, PARA-DICHLOROBENZENE, ANTHRACENE, AND BETA NAPHTHOL, WHEREUPON AS THE TREATMENT CONTINUES SAID PARTICLES PROVIDE TEMPORARY DEPOSITS PARTIALLY PLUG-GING THE MORE PERMEABLE ZONES OF SAID STRUCTURE AND THEREBY SUBSTANTIALLY REDUCE THE TENDENCY OF SAID TREATING FLUID TO BY-PASS THE LESS PERMEABLE ZONE THEREOT, AND THEREAFTER REMOVING SAID TEMPORARY DEPOSITS BY CIRCULATING OIL INTO CONTACT THEREWITH.
Claim 2
Dependent Claim
123 words
IN A PROCESS FOR RESTORING OR INCREASING THE PERMEABILITY OF AN UNDERGROUND FORMATION OR OTHER STRUCTURE TRAVERSED BY A WELL BOREE AND INCLUDING SEVERAL ZONES HAVING VARYING PERMEABILITIES, THE STEPS OF INTRODUCING INTO SAID WELL BORE AND THENCE INTO CONTACT WITH SAID STRUCTURE A TREATING FLUID CONTAINING HYDROCHLORIC ACID AND HAVING DISPERSED THEREIN A QUANTITY OF DISCRETE PARTICLES OF AN OIL-SOLUBLE MATERIAL SELECTED FROM THE CLASS CONSISTING OF GILSONITE, NAPHTHALENE, PARA-DICHLOROBENZENE, ANTHRACENE, AND BETA NAPHTHOL, WHEREUPON AS THE TREATMENT CONTINUES SAID PARTICLES PROVIDE TEMPORARY DEPOSITS PARTIALLY PLUG-GING THE MORE PERMEABLE ZONES OF SAID STRUCTURE AND THEREBY SUBSTANTIALLY REDUCE THE TENDENCY OF SAID TREATING FLUID TO BY-PASS THE LESS PERMEABLE ZONE THEREOT, AND THEREAFTER REMOVING SAID TEMPORARY DEPOSITS BY CIRCULATING OIL INTO CONTACT THEREWITH.
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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |