Patent DE490970C successfully refreshed from Google Patents.
Patent US3018095A successfully refreshed from Google Patents.
US3018095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of hydraulic fracturing in underground formations
Assignee: FMC Corp
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Filing: 1958-07-23
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Granted: 1962-01-23
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Expires: 1978-07-23
Abstract
No abstract record available.
Inventors
- 👤 Jacob F Redlinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:06
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
THE METHOD OF DIRECTING A FRACTURE PRODUCED BY HYDRAULIC FRACTURING OF AN UNDERGROUND FORMATION INITIALLY IN A SUBSTANTIALLY HORIZONTAL PLANE BETWEEN TWO WELLS WHICH COMPRISES DRILLING TWO WELLS INTO THE FORMATION TO THE DESIRED POINT OF FRACTURE, CIRCULATING A DRILLING MUD THROUGH THE WELLS DURING THE DRILLING, UNDERREAMING ONE OF THE WELLS BELOW THE DESIRED POINT OF FRACTURE AND LEAVING DRILLING MUD IN THE UNDERREAMED SECTION, CASING THE WELL, CEMENTING THE CASING IN THE WELL, SPREADING THE CEMENT HORIZONTALLY ALONG THE TOP OF THE DRILLING MUD IN THE UNDERREAMED SECTION, WASHING OUT THE DRILLING MUD IN THE UNDERREAMED SECTIONS AND APPLYING A HYDRAULIC FRACTURING PRESSURE TO THE UNDERREAMED SECTION TO CAUSE SEPARATION OF THE FORMATION AT SUBSTANTIALLY THE TOP OF THE UNDERREAMED SECTION AND SPREAD OF THE FRACTURE TO THE ADJACENT WELL.
Claim 2
Independent Claim
132 words
THE METHOD OF DIRECTING A FRACTURE PRODUCED BY HYDRAULIC FRACTURING OF AN UNDERGROUND FORMATION INITIALLY IN A SUBSTANTIALLY HORIZONTAL PLANE BETWEEN TWO WELLS WHICH COMPRISES DRILLING TWO WELLS INTO THE FORMATION TO THE DESIRED POINT OF FRACTURE, CIRCULATING A DRILLING MUD THROUGH THE WELLS DURING THE DRILLING, UNDERREAMING ONE OF THE WELLS BELOW THE DESIRED POINT OF FRACTURE AND LEAVING DRILLING MUD IN THE UNDERREAMED SECTION, CASING THE WELL, CEMENTING THE CASING IN THE WELL, SPREADING THE CEMENT HORIZONTALLY ALONG THE TOP OF THE DRILLING MUD IN THE UNDERREAMED SECTION, WASHING OUT THE DRILLING MUD IN THE UNDERREAMED SECTIONS AND APPLYING A HYDRAULIC FRACTURING PRESSURE TO THE UNDERREAMED SECTION TO CAUSE SEPARATION OF THE FORMATION AT SUBSTANTIALLY THE TOP OF THE UNDERREAMED SECTION AND SPREAD OF THE FRACTURE TO THE ADJACENT WELL.
References Cited (Backward Citations)
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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) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |