US3242987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and apparatus for completing wells
Assignee: Schlumberger Well Surveying Corp
•
Filing: 1962-03-06
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Granted: 1966-03-29
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Expires: 1982-03-06
Abstract
No abstract record available.
Inventors
- 👤 Maurice P Lebourg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:45
CPC Classifications
F; F42; F42B; F42B1/00; F42B1/02; F42B1/028; E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/117
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A METHOD OF TREATING EARTH FORMATIONS IN A WALL BORE FOR THE PURPOSE OF INCREASING THE PRODUCTION OF A FLUID THEREFROM WHICH INCLUDES THE STEPS OF: DEVELOPING IN A WELL BORE EXTENDING THROUGH EARTH FORMATION A PENETRATING FORCE UNIFORMS ABOUT AND TRAVELING ALONG AN AXIS TOPENETRATE A WELL BORE WALL AND PROVIDE A GENERALLY-CIRCULAR OPENING THEREIN, AND FOLLOWING SAID PENETRATING FORCE WITH AN ENLARGING FORCE EFFECTIVE WITHIN THE PENETRATED EARTH FORMATIONS IN A PLANE INTERSECTING SAID AXIS TO PROVIDE AN OUT-OF-ROUND RECESS BEYOND SAID CIRCULAR OPENING HAVING SYMMETRY WITH RESPECT TO SAID THEREBY TO WEAKEN THE FORMATIONS AND TO INCREASE THE AREA SUBJECTED TO PARTING FORCES WHEN HYDROSTATIC PRESSURE IS APPLIED, AND THEN APPLYING A LIQUID UNDER HYDRAULIC PRESSURE THROUGH THE OPENING TO THE RECESSED PORTION OF THE FORMATION SUFFICIENT TO FRACTURE THE FORMATION.
Claim 2
Independent Claim
134 words
A METHOD OF TREATING EARTH FORMATIONS IN A WALL BORE FOR THE PURPOSE OF INCREASING THE PRODUCTION OF A FLUID THEREFROM WHICH INCLUDES THE STEPS OF: DEVELOPING IN A WELL BORE EXTENDING THROUGH EARTH FORMATION A PENETRATING FORCE UNIFORMS ABOUT AND TRAVELING ALONG AN AXIS TOPENETRATE A WELL BORE WALL AND PROVIDE A GENERALLY-CIRCULAR OPENING THEREIN, AND FOLLOWING SAID PENETRATING FORCE WITH AN ENLARGING FORCE EFFECTIVE WITHIN THE PENETRATED EARTH FORMATIONS IN A PLANE INTERSECTING SAID AXIS TO PROVIDE AN OUT-OF-ROUND RECESS BEYOND SAID CIRCULAR OPENING HAVING SYMMETRY WITH RESPECT TO SAID THEREBY TO WEAKEN THE FORMATIONS AND TO INCREASE THE AREA SUBJECTED TO PARTING FORCES WHEN HYDROSTATIC PRESSURE IS APPLIED, AND THEN APPLYING A LIQUID UNDER HYDRAULIC PRESSURE THROUGH THE OPENING TO THE RECESSED PORTION OF THE FORMATION SUFFICIENT TO FRACTURE THE FORMATION.
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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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |