US3927723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for drilling holes utilizing pulsed jets of liquid charge material
Assignee: Exotech Inc
•
Filing: 1973-06-11
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Granted: 1975-12-23
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Expires: 1993-06-11
Abstract
Abstract Apparatus for drilling holes in a formation utilizing pulsed jets of charge material. A housing encloses means for generating pulsed jets of, for example, liquid charge material. One or more acceleration bores extend out the housing in a conical pattern. One or more longitudinal grooves are included in the housing, and means are provided for impelling spent charge material, formation chips, mud, etc. from the hole and out through the longitudinal grooves. A single acceleration bore can have one or more outlet bores angled therefrom to cause a rotational force in the housing in response to expelling of pulsed jets of charge material out the outlet bores. The housing can be made of a first portion with the acceleration bore therein and a nozzle portion with the outlet bores therein and rotatably coupled to the first portion so that only the nozzle portion rotates in response to expelling of pulsed jets. Smoothing tips can extend from the housing to smooth the hole as the housing rotates.
Inventors
- 👤 James M Hall
- 👤 Louis L Clipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:02
CPC Classifications
B; B05; B05B; B05B12/00; B05B12/02; B05B12/06; E; E21; E21B; E21B7/00; E21B7/18
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
159 words
Apparatus for drilling holes comprising: a housing with a first end and a second end and having a longitudinal bore passing therethrough and having at least one acceleration bore passing thereinto from said housing second end and at an angle with respect to the housing longitudinal axis and having at least one longitudinal groove extending the length thereof; first means for generating a pulsed jet of charge material for passage through the at least one acceleration bore; a pressurized gas source adjacent said housing first end and coupled to the longitudinal bore for impelling material from said housing second end through the longitudinal groove to the housing first end whereby as a hole is drilled in a formation adjacent said housing second end by pulsed jets of charge material expelled out the at least one acceleration bore, spent charge material and formation chips are impelled from the hole through the longitudinal groove for discharge at the housing first end.
Claim 2
Dependent Claim
159 words
Apparatus for drilling holes comprising: a housing with a first end and a second end and having a longitudinal bore passing therethrough and having at least one acceleration bore passing thereinto from said housing second end and at an angle with respect to the housing longitudinal axis and having at least one longitudinal groove extending the length thereof; first means for generating a pulsed jet of charge material for passage through the at least one acceleration bore; a pressurized gas source adjacent said housing first end and coupled to the longitudinal bore for impelling material from said housing second end through the longitudinal groove to the housing first end whereby as a hole is drilled in a formation adjacent said housing second end by pulsed jets of charge material expelled out the at least one acceleration bore, spent charge material and formation chips are impelled from the hole through the longitudinal groove for discharge at the housing first end.
Claim 3
Dependent Claim
160 words
Apparatus for drilling holes comprising: a housing with a first end and a second end and having at least one valveless acceleration bore passing thereinto from said housing second end and at an angle with respect to the housing longitudinal axis, said acceleration bore having no impediment to the flow of fluid therethrough, said housing having at least one longitudinal groove extending the length of said housing; a single pulsed jet generator for generating a pulsed jet of charge material for passage through each acceleration bore in said housing located at said first end; impelling means for impelling material from said housing second end through the longitudinal groove to the housing first end whereby as a hole is drilled in a formation adjacent said housing second end by pulsed jets of charge material expelled out each acceleration bore, spent charge material and formation chips are impelled from the hole through the longitudinal groove for discharge at the housing first end.
Claim 4
Dependent Claim
160 words
Apparatus for drilling holes comprising: a housing with a first end and a second end and having at least one valveless acceleration bore passing thereinto from said housing second end and at an angle with respect to the housing longitudinal axis, said acceleration bore having no impediment to the flow of fluid therethrough, said housing having at least one longitudinal groove extending the length of said housing; a single pulsed jet generator for generating a pulsed jet of charge material for passage through each acceleration bore in said housing located at said first end; impelling means for impelling material from said housing second end through the longitudinal groove to the housing first end whereby as a hole is drilled in a formation adjacent said housing second end by pulsed jets of charge material expelled out each acceleration bore, spent charge material and formation chips are impelled from the hole through the longitudinal groove for discharge at the housing first end.
Claim 5
Dependent Claim
26 words
Apparatus as claimed in claim 2 in which said second means comprises a vacuum pump adjacent said housing first end and connected to the longitudinal groove.
Claim 6
Dependent Claim
50 words
Apparatus as claimed in claim 2 in which said housing has a single longitudinal acceleration bore therein and communicating with at least one outlet bore, each outlet bore passing out said housing second end and intersecting the acceleration bore at an angle Alpha with respect to the housing longitudinal axis.
Claim 7
Dependent Claim
17 words
Apparatus as claimed in claim 4 in which angle Alpha is an angle up to about 20*.
Claim 8
Dependent Claim
51 words
Apparatus as claimed in claim 2 in which said housing includes a first portion having a single longitudinal acceleration bore therein and a nozzle portion having at least one outlet bore therein communicating with the acceleration bore, at an angle Alpha , said nozzle portion rotatably coupled to said first portion.
Claim 9
Dependent Claim
17 words
Apparatus as claimed in claim 6 in which angle Alpha is an angle up to about 20*.
Claim 10
Dependent Claim
30 words
Apparatus as claimed in claim 6 in which said housing has a plurality of acceleration bores, each acceleration bore at an angle Alpha with respect to the housing longitudinal axis.
Claim 11
Dependent Claim
16 words
Apparatus as claimed in claim 8 in which said housing further has a longitudinal acceleration bore.
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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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |