US3881695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for measuring the rate of penetration of the drill bit during drilling operations performed from a floating installation
Assignee: IFP Energies nouvelles
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Filing: 1972-11-07
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Granted: 1975-05-06
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Expires: 1992-11-07
Abstract
Abstract This device comprises means for detecting the instantaneous position of the drill pipe relative to the floating installation, said means generating a first signal representative of this position. The first signal is transmitted to a circuit which generates a second signal representative of the average position of the drill pipe relative to the floating installation, this second signal being applied to a derivating circuit which delivers a signal representing the drilling speed.
Inventors
- 👤 Philippe Joubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:18
CPC Classifications
E; E21; E21B; E21B45/00; E21B19/00; E21B19/08; E21B19/09
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
103 words
A device for measuring drilling speeds of a drill pipe subject to relative movement with respect to a drilling installation, said device comprising: first signal means for generating a first signal representative of the position of a drill pipe with respect to the drilling installation; second signal means connected to said first signal means for deriving from said first signal a second signal representative of drilling speeds of said drill pipe, said second signal being a first derivative of said first signal; and diplay means connected to said second signal means for displaying said second signal such that said drilling speeds are obtained.
Claim 2
Independent Claim
103 words
A device for measuring drilling speeds of a drill pipe subject to relative movement with respect to a drilling installation, said device comprising: first signal means for generating a first signal representative of the position of a drill pipe with respect to the drilling installation; second signal means connected to said first signal means for deriving from said first signal a second signal representative of drilling speeds of said drill pipe, said second signal being a first derivative of said first signal; and diplay means connected to said second signal means for displaying said second signal such that said drilling speeds are obtained.
Claim 3
Dependent Claim
22 words
A device according to claim 1, wherein said first signal represents a relative position between said drill pipe and said drilling installation.
Claim 4
Independent Claim
121 words
A device for measuring drilling speeds of a drill pipe subject to relative movement with respect to a drilling installation, said device comprising: first signal means for generating a fiRst signal representative of the position of a drill pipe with respect to a drilling installation; second signal means for deriving from said first signal a second signal representative of drilling speeds of said drill pipe; and display means for displaying said second signal such that said drilling speeds are obtained, wherein said first signal means includes correcting means for eliminating the effects of oscillatory movements of said drill pipe with respect to said drilling installation, said oscillatory movements being superimposed upon direct movement between said drill pipe and said drilling installation.
Claim 5
Independent Claim
121 words
A device for measuring drilling speeds of a drill pipe subject to relative movement with respect to a drilling installation, said device comprising: first signal means for generating a fiRst signal representative of the position of a drill pipe with respect to a drilling installation; second signal means for deriving from said first signal a second signal representative of drilling speeds of said drill pipe; and display means for displaying said second signal such that said drilling speeds are obtained, wherein said first signal means includes correcting means for eliminating the effects of oscillatory movements of said drill pipe with respect to said drilling installation, said oscillatory movements being superimposed upon direct movement between said drill pipe and said drilling installation.
Claim 6
Dependent Claim
69 words
A device according to claim 3, wherein said correcting means include detecting means for detecting an instantaneous position of said drill pipe with respect to said drilling installation, said detecting means generating an intermediate signal representative of said instantaneous position, and signal processing means for processing said intermediate signal to obtain an output signal representative of a relative position of said drill pipe with respect to said drilling installation.
Claim 7
Dependent Claim
33 words
A device according to claim 4, wherein said second signal means includes derivating means for generating a first derivative of said output signal to obtain said second signal representative of said drilling speeds.
Claim 8
Dependent Claim
28 words
A device according to claim 5, further comprising safety means for indicating predetermined limits of said oscillatory movements, said predetermined limits defining a given interval of oscillatory movements.
Claim 9
Dependent Claim
78 words
A device according to claim 6, wherein said safety means comprise at least first and second comparator means, each of said comparator means being supplied with respective signals representative of said predetermined limits, said comparator means comparing said respective signals with said intermediate signal, and indicating means for indicating a value of said intermediate signal, said value representing a position of said drill pipe with respect to said drilling installation outside of said interval between said predetermined limits.
Claim 10
Independent Claim
208 words
A device for measuring drilling speeds of drill pipe from a floating drilling installation of the type including an apparatus for preventing drill pipe from vertical movements, said apparatus including a support member for supporting drill pipe, control means for controlling displacement of said drill pipe relative to said floating installation, and compensating means for compensating vertical movements of the drill pipe with respect to the floating installation, said device comprising: detecting means for detecting an instantaneous relative position of drill pipe with respect to a floating installation, said detecting means generating a first signal representative of said instantaneous position, first processing means for processing said first signal, said first processing means being connected to said detecting means and generating a second signal representative of a relative position of said drill pipe with respect to said floating installation, said relative position being a function of said instantaneous position, second processing means for processing said second signal, said second processing means being connected to said first processing means and generating a third signal representative of a relative speed of advancement of said drill pipe with respect to said floating installation, and display means for displaying values of drilling speed, said display means being connected to said second processing means.
Claim 11
Independent Claim
208 words
A device for measuring drilling speeds of drill pipe from a floating drilling installation of the type including an apparatus for preventing drill pipe from vertical movements, said apparatus including a support member for supporting drill pipe, control means for controlling displacement of said drill pipe relative to said floating installation, and compensating means for compensating vertical movements of the drill pipe with respect to the floating installation, said device comprising: detecting means for detecting an instantaneous relative position of drill pipe with respect to a floating installation, said detecting means generating a first signal representative of said instantaneous position, first processing means for processing said first signal, said first processing means being connected to said detecting means and generating a second signal representative of a relative position of said drill pipe with respect to said floating installation, said relative position being a function of said instantaneous position, second processing means for processing said second signal, said second processing means being connected to said first processing means and generating a third signal representative of a relative speed of advancement of said drill pipe with respect to said floating installation, and display means for displaying values of drilling speed, said display means being connected to said second processing means.
Claim 12
Dependent Claim
33 words
A device according to claim 8, wherein said second processing means are constituted by a derivating circuit, said derivating circuit generating a signal representative of the first derivative of a signal applied thereto.
Claim 13
Dependent Claim
127 words
A device according to claim 8; wherein said compensating means comprise at least one element subjected to an oscillatory motion having a rotary component, wherein said detecting means are constituted by a revolving potentiometer supplied by an elecTric generator, said revolving potentiometer having a slider in rotation with said at least one element, and said revolving potentiometer delivering a first oscillatory electric signal representative of an instantaneous position of said at least one element, and wherein said first processing means is constituted by an electric circuit for filtering the variations of said first oscillatory electric signal, said filtering circuit delivering a second electric signal representative of a relative position of said at least one element, and said second processing means are constituted by a derivating electric circuit.
Claim 14
Dependent Claim
141 words
A device according to claim 8, wherein first safety means are connected to said control means for delivering to said control means a first safety signal exclusively when a support member for supporting said drill pipe reaches an upper limit position, said first safety means being directly connected to said detecting means and receiving therefrom said first signal representative of said instantaneous position, and wherein second safety means are connected to said control means for delivering to said control means a second safety signal exclusively when said support member reaches a lower limit position, said second safety means being directly connected to said detecting means and receiving therefrom said first signal representative of said instantaneous position, said control means being actuated at the reception of said first safety signal and interrupting its operation at the reception of said second safety signal.
References Cited (Backward Citations)
US3541852A
Cited
US3746102A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |