US3856095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming and loading a shot-hole
Assignee: Shell USA Inc
•
Filing: 1973-10-04
•
Granted: 1974-12-24
•
Expires: 1993-10-04
Abstract
Abstract Seismic energy for geophysical prospecting is provided by drilling a shot-hole to a selected depth using a cutting tool such as a hydraulic jet nozzle or a downhole drill motor attached to a non-rotating, continuous flexible spooled conduit; pumping a liquid explosive and detonating means actuatable from the earth surface down the conduit, through the cutting tool and into the shot-hole; withdrawing the conduit and cutting tool from the shot-hole; and detonating the explosive.
Inventors
- 👤 J Adair
- 👤 R Luke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:53
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/007; E21B19/00; E21B19/22; E21B21/00; E21B21/10; E21B7/18; F; F42; F42D; F42D1/00; F42D1/08; F42D1/10; G; G01; G01V; G01V1/00; G01V1/02; G01V1/104
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
121 words
Apparatus for forming and loading a shothole comprising: a spooled flexible conduit; a hydraulic jet nozzle rotatably attached to one end of the flexible conduit, the bottom of said nozzle having an opening of diameter sufficient to allow passage of an explosive detonating means, said opening being closed with a frangible plug which may be expelled from the opening upon application of a sufficient pressure drop accross the face of the hydraulic jet nozzle; pump means for delivering pressurized fluid to the hydraulic jet nozzle; and manifold means coupling the pump means to the opposite ends of the flexible conduit, said manifold means comprising a plurality of material storage means in fluid communication with the pump means and the flexible conduit.
Claim 2
Dependent Claim
121 words
Apparatus for forming and loading a shothole comprising: a spooled flexible conduit; a hydraulic jet nozzle rotatably attached to one end of the flexible conduit, the bottom of said nozzle having an opening of diameter sufficient to allow passage of an explosive detonating means, said opening being closed with a frangible plug which may be expelled from the opening upon application of a sufficient pressure drop accross the face of the hydraulic jet nozzle; pump means for delivering pressurized fluid to the hydraulic jet nozzle; and manifold means coupling the pump means to the opposite ends of the flexible conduit, said manifold means comprising a plurality of material storage means in fluid communication with the pump means and the flexible conduit.
Claim 3
Dependent Claim
100 words
Apparatus for forming and loading a shothole comprising: a spooled flexible conduit; a hydraulic jet nozzle rotatably attached to one end of the flexible conduit; pump means for delivering pressurized fluid to the hydraulic jet nozzle; and manifold means coupling the pump means to the opposite end of the flexible conduit, said manifold means comprising a plurality of material storage means in fluid communication with the pump means and the flexible conduit, at least one of the material storage means comprises a housing; a spool rotatably mounted in the housing; and a length of detonating wire wound upon the spool.
Claim 4
Dependent Claim
100 words
Apparatus for forming and loading a shothole comprising: a spooled flexible conduit; a hydraulic jet nozzle rotatably attached to one end of the flexible conduit; pump means for delivering pressurized fluid to the hydraulic jet nozzle; and manifold means coupling the pump means to the opposite end of the flexible conduit, said manifold means comprising a plurality of material storage means in fluid communication with the pump means and the flexible conduit, at least one of the material storage means comprises a housing; a spool rotatably mounted in the housing; and a length of detonating wire wound upon the spool.
Claim 5
Dependent Claim
42 words
The apparatus of claim 2 wherein one end of the detonating wire is connected to a pulling member for pulling the wire off the spool and into the flexible conduit when fluid is pumped through the housing and into the flexible conduit.
Claim 6
Dependent Claim
29 words
The apparatus of claim 3 wherein the pulling member comprises at least one brush having a plurality flexible bristles of length greater than the radius of the flexible conduit.
Claim 7
Dependent Claim
35 words
The apparatus of claim 3 wherein the opposite end of the wire is attached to a support means comprising at least three scratcher arms and wherein the support means is releaseably attached to the spool.
References Cited (Backward Citations)
US1766487A
Cited
US1846395A
Cited
US2074052A
Cited
US2137261A
Cited
US2112212A
Cited
US3100542A
Cited
US3022792A
Cited
US3130797A
Cited
US3186502A
Cited
US3167126A
Cited
US3306357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |