Patent US3586116A successfully refreshed from Google Patents.
US3586116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Directional drilling equipment
Assignee: TURBOSERVICE
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Filing: 1969-04-01
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Granted: 1971-06-22
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Expires: 1989-04-01
Abstract
Abstract Directional drilling equipment is disclosed that employs a downhole motor to rotate the bit, while the drill string provides the weight on the bit. The equipment has a sleeve between the bit and the motor that has a bend or inflection point such that the bit makes the desired angle with the axis of the drill string. Torque from the motor is transmitted through the inflection point to the bit by a shaft and a dual universal joint housed in the sleeve. None of the weight on the bit or the end thrust of the motor is transmitted to the shaft.
Inventors
- 👤 Wladimir Tiraspolsky
- 👤 Roger Francois Rouviere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:25
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/04; E21B7/06; E21B7/067
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
99 words
An equipment for directional ground drilling particularly for drilling oil wells comprising an underground rotating motor, a drilling tool, an inflection point between said motor and tool, a first straight shaft extending between said inflection point and motor, a second straight shaft extending between said inflection point and tool, radial bearings for said shafts, a first axial thrust bearing for receiving the axial thrust stress of the motor and combined with said first shaft, a second axial thrust bearing for receiving the tool reaction and combined with said second shaft, and a homokinetic driving device at said inflection point.
Claim 2
Dependent Claim
99 words
An equipment for directional ground drilling particularly for drilling oil wells comprising an underground rotating motor, a drilling tool, an inflection point between said motor and tool, a first straight shaft extending between said inflection point and motor, a second straight shaft extending between said inflection point and tool, radial bearings for said shafts, a first axial thrust bearing for receiving the axial thrust stress of the motor and combined with said first shaft, a second axial thrust bearing for receiving the tool reaction and combined with said second shaft, and a homokinetic driving device at said inflection point.
Claim 3
Dependent Claim
20 words
An equipment for directional ground drilling according to claim 1 wherein the homokinetic driving device comprises a dual universal joint.
Claim 4
Dependent Claim
33 words
An equipment for directional ground drilling according to claim 1 wherein the inflection point comprises a one-piece cranked sleeve and the homokinetic driving device comprises a dual universal joint housed in said sleeve.
Claim 5
Dependent Claim
128 words
An equipment for directional ground drilling comprising an underground drilling motor made up of separate first and second sections, a drilling tool, an inflection point between both sections of said motor, a first straight shaft extending between the inflection point and said first section of the motor, a second straight shaft extending between said inflection point and tool through said second section, radial bearings for the shafts, a first axial thrust bearing for receiving the axial thrust stress of said first motor section and combined with said first shaft, a second axial thrust bearing for receiving the resultant force from the axial thrust stress of said second motor section and the tool reaction and combined with said second shaft, and a homokinetic driving device at said inflection point.
Claim 6
Dependent Claim
128 words
An equipment for directional ground drilling comprising an underground drilling motor made up of separate first and second sections, a drilling tool, an inflection point between both sections of said motor, a first straight shaft extending between the inflection point and said first section of the motor, a second straight shaft extending between said inflection point and tool through said second section, radial bearings for the shafts, a first axial thrust bearing for receiving the axial thrust stress of said first motor section and combined with said first shaft, a second axial thrust bearing for receiving the resultant force from the axial thrust stress of said second motor section and the tool reaction and combined with said second shaft, and a homokinetic driving device at said inflection point.
Claim 7
Dependent Claim
20 words
An equipment for directional ground drilling according to claim 4, wherein the homokinetic driving device comprises a dual universal joint.
Claim 8
Dependent Claim
33 words
An equipment for directed ground drilling according to claim 4, wherein the inflection point comprises a one-piece cranked sleeve and the homokinetic driving device comprises a dual universal joint housed in said sleeve.
Claim 9
Dependent Claim
127 words
An equipment for directional ground drilling comprising an underground rotating motor, a drilling tool, a homokinetic driving device providing an inflection point between said motor and tool, a first straight shaft extending between said driving device and motor, a second straight shaft extending between said driving device and tool, radial bearings for said shafts, a first axial thrust bearing for receiving the axial thrust stress of the motor and combined with said first shaft, a second axial thrust bearing for receiving the tool reaction and combined with said second shaft, and an axially slidable angular coupling interposed in one of said shafts. 8, An equipment for directional ground drilling according to claim 7 wherein elastic elements are associated with said coupling for absorbing vibrations and angular impacts.
Claim 10
Dependent Claim
47 words
An equipment for directional ground drilling according to claim 7 wherein said axially slidable coupling comprises a female joint, a shaft received in said joint, ribs and flutes respectively provided on said female joint and shaft for behaving as guides, and rolling member received in said guides.
Claim 11
Dependent Claim
104 words
An equipment for directional ground drilling comprising an underground rotating motor, a drilling tool, an inflection point between said motor and tool, a first straight shaft exTending between said inflection point and motor, a second straight shaft extending between said inflection point and tool, radial bearings for said shafts, a first axial thrust bearing for receiving the axial thrust stress of the motor and combined with said first shaft, a second axial thrust bearing for receiving the tool reaction and combined with said second shaft, a homokinetic driving device as said inflection point, and means for adjusting the angle provided by the inflection point.
Claim 12
Dependent Claim
104 words
An equipment for directional ground drilling comprising an underground rotating motor, a drilling tool, an inflection point between said motor and tool, a first straight shaft exTending between said inflection point and motor, a second straight shaft extending between said inflection point and tool, radial bearings for said shafts, a first axial thrust bearing for receiving the axial thrust stress of the motor and combined with said first shaft, a second axial thrust bearing for receiving the tool reaction and combined with said second shaft, a homokinetic driving device as said inflection point, and means for adjusting the angle provided by the inflection point.
Claim 13
Dependent Claim
67 words
An equipment for directional ground drilling according to claim 10, wherein said adjusting means comprise a first sleeve, a second sleeve screwed upon the first sleeve and having an axis inclined with respect to the first sleeve axis, a revoluble ring between said first and second sleeves, and means for angularly keying said ring in a plurality of positions with respect to said first and second sleeves.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |