US3867714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque assist for logging-while-drilling tool
Assignee: Mobil Oil AS
•
Filing: 1973-04-16
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Granted: 1975-02-18
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Expires: 1993-04-16
Abstract
Abstract A logging-while-drilling system which is positioned within the drill string of a well drilling apparatus. The system includes a tool which has a turbinelike, signal-generating valve which rotates to generate a pressure wave signal in the drilling fluid which is representative of a measured downhole condition. A mud conditioning means comprising a jet and a spinner is positioned in the drill string above the valve of said tool wherein said means imparts angular motion to at least a portion of the drilling fluid in such a manner that the power hydraulically developed by the valve as the mud flows therethrough will be a desired function of the flowrate and/or density of said mud.
Inventors
- 👤 Bobbie Joe Patton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:31
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/12; E21B47/14; E21B47/18; E21B47/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
A logging-while-drilling apparatus for use in an earth drilling operation comprising: a conduit adapted to be connected into a drill string of an earth drilling apparatus; a logging-while-drilling tool positioned within said conduit, said tool having a turbinelike, signal generating valve positioned so that at least a portion of any drilling fluid flowing through said conduit will flow through said valve; and means in said conduit upstream of said valve for conditioning said drilling fluid comprising: a jet positioned in said conduit so that said drilling fluid will pass therethrough; and a means positioned in said conduit below said jet for imparting angular motion to at least a portion of said drilling fluid after it exits said jet and before it passes through said valve means.
Claim 2
Dependent Claim
126 words
A logging-while-drilling apparatus for use in an earth drilling operation comprising: a conduit adapted to be connected into a drill string of an earth drilling apparatus; a logging-while-drilling tool positioned within said conduit, said tool having a turbinelike, signal generating valve positioned so that at least a portion of any drilling fluid flowing through said conduit will flow through said valve; and means in said conduit upstream of said valve for conditioning said drilling fluid comprising: a jet positioned in said conduit so that said drilling fluid will pass therethrough; and a means positioned in said conduit below said jet for imparting angular motion to at least a portion of said drilling fluid after it exits said jet and before it passes through said valve means.
Claim 3
Dependent Claim
27 words
The apparatus of claim 1 wherein said means for imparting angular motion to at least a portion of said drilling fluid comprises: a plurality of vane members.
Claim 4
Dependent Claim
46 words
The apparatus of claim 2 wherein each of said vane members is fixed in said conduit against rotation and wherein each of said vane members terminates at a distance from the centerline of said conduit to thereby define an open, central portion through said vane members.
Claim 5
Dependent Claim
18 words
The apparatus of claim 3 including: a diverter tube positioned within said central portion of said vane members.
Claim 6
Dependent Claim
29 words
The apparatus of claim 1 wherein said jet has a smooth entrance and a smooth exit to prevent turbulence of said drilling fluid as it passes through said jet.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
US3705603A
Cited
US3739331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |