Patent US3589453A successfully refreshed from Google Patents.
US3589453A
Expired / Lapsed
US
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Shaped charge perforating apparatus and method
Assignee: Western Atlas International Inc
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Filing: 1968-07-26
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Granted: 1971-06-29
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Expires: 1988-07-26
Abstract
Abstract Apparatus for perforating oil and gas wells and the like and methods for completing such wells in an unconsolidated formation. The apparatus includes one or more shaped charges having inert particles located therein arranged to be carried, upon detonation of the charge, into the perforation formed by the charge and also including a carrier for positioning the shaped charge in the well. The method includes the steps of positioning the shaped charge and carrier in the well adjacent the unconsolidated formation to be perforated and detonating the charge to simultaneously form the perforation and place the inert particles in the perforation to form a permeable bridge therein.
Inventors
- 👤 Alexis A Venghiattis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:31
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/117
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
111 words
Perforating apparatus for use in completing a well comprising: a tubular housing having an upper closed end, a lower closed end, and a plurality of apertures extending transversely through the wall of said housing; closure means closing each of said apertures; a plurality of shaped charges located in said housing; generally cylindrical-shaped charge holding means located substantially coaxially in said housing and holding each said shaped charge in alignment with a respective one of said apertures; and ignition means extending into said housing for detonating said charges; said holding meAns being constructed from a sheet explosive; and said ignition means extending into said housing and being connected with said sheet explosive.
Claim 2
Dependent Claim
111 words
Perforating apparatus for use in completing a well comprising: a tubular housing having an upper closed end, a lower closed end, and a plurality of apertures extending transversely through the wall of said housing; closure means closing each of said apertures; a plurality of shaped charges located in said housing; generally cylindrical-shaped charge holding means located substantially coaxially in said housing and holding each said shaped charge in alignment with a respective one of said apertures; and ignition means extending into said housing for detonating said charges; said holding meAns being constructed from a sheet explosive; and said ignition means extending into said housing and being connected with said sheet explosive.
Claim 3
Dependent Claim
128 words
Perforating apparatus for use in completing a well comprising: a plurality of tubular housings, each said housing having upper and lower closed ends and a plurality of apertures extending through the wall thereof, said housings being connected in end-to-end relationship; closure means closing each said aperture; a plurality of shaped charges disposed in each said housing; a generally cylindrical-shaped charge holding member located substantially coaxially in each said housing holding each said charge in alignment with a respective aperture; selective ignition control means connected with one of said housings; and, ignition means connecting said control means with said charges, whereby the shaped charges located in a selected housing are simultaneously detonated, said holding means being constructed from a sheet explosive and being operably connected with said ignition means.
Claim 4
Dependent Claim
128 words
Perforating apparatus for use in completing a well comprising: a plurality of tubular housings, each said housing having upper and lower closed ends and a plurality of apertures extending through the wall thereof, said housings being connected in end-to-end relationship; closure means closing each said aperture; a plurality of shaped charges disposed in each said housing; a generally cylindrical-shaped charge holding member located substantially coaxially in each said housing holding each said charge in alignment with a respective aperture; selective ignition control means connected with one of said housings; and, ignition means connecting said control means with said charges, whereby the shaped charges located in a selected housing are simultaneously detonated, said holding means being constructed from a sheet explosive and being operably connected with said ignition means.
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |