US3785202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic supervisory control system for drilling wells
Assignee: Cities Service Oil Co
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Filing: 1971-06-25
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Granted: 1974-01-15
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Expires: 1991-06-25
Abstract
Abstract An electronic supervisory control system is disclosed herein wherein rotary power, rotary speed, bit weight, hole size, penetration rate and mud weight ratio are utilized in conjunction with analog and electronic sensing means in order to afford drilling personnel a supervisory control system over drilling operation. Recorded information includes the rate of penetration, corrected d exponent and rotary torque, which may be visually recorded and electronically stored for use for both supervisory control and simultaneous understanding of the monitored drilling variables and their effect upon the drilling operation.
Inventors
- 👤 R Kelseaux
- 👤 H Dobbs
- 👤 F Priebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:26
CPC Classifications
E; E21; E21B; E21B44/00; E21B45/00; E21B47/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
234 words
An electronic supervisory control system for monitoring and recording of a drilling operation wherein a drill string having a kelly and a drill bit is turned by means of a rotary motor said control system comprises: a. computer means for computing; b. means for sensing the rotary motor power electrically connected to said computer means; c. means for sensing the rotary motor speed electrically connected to said computer means; d. means for sensing the weight on the drill bit electrically connected to said computer means; e. means for sensing the penetration rate of the drill bit electrically connected to said computer means; f. means for recording electrically connected to said computer means; g. means for inputting a drilled hole size into said computer means; h. means for inputting a mud weight ratio into said computer means; and in which the means for sensing the weight on the drill bit and the Means for sensing the penetration rate of the drill bit are utilized in combination with the input of the drilled hole size and mud weight ratio to compute by said computer a corrected d exponent; and simultaneously the means for sensing the rotary motor power and means for sensing the rotary motor speed are utilized to compute by said computer a rotary motor torque, and the corrected d exponent, rotary motor torque and rate of penetration are plotted on said means for recording.
Claim 2
Dependent Claim
234 words
An electronic supervisory control system for monitoring and recording of a drilling operation wherein a drill string having a kelly and a drill bit is turned by means of a rotary motor said control system comprises: a. computer means for computing; b. means for sensing the rotary motor power electrically connected to said computer means; c. means for sensing the rotary motor speed electrically connected to said computer means; d. means for sensing the weight on the drill bit electrically connected to said computer means; e. means for sensing the penetration rate of the drill bit electrically connected to said computer means; f. means for recording electrically connected to said computer means; g. means for inputting a drilled hole size into said computer means; h. means for inputting a mud weight ratio into said computer means; and in which the means for sensing the weight on the drill bit and the Means for sensing the penetration rate of the drill bit are utilized in combination with the input of the drilled hole size and mud weight ratio to compute by said computer a corrected d exponent; and simultaneously the means for sensing the rotary motor power and means for sensing the rotary motor speed are utilized to compute by said computer a rotary motor torque, and the corrected d exponent, rotary motor torque and rate of penetration are plotted on said means for recording.
Claim 3
Dependent Claim
73 words
The electronic supervisory control system of claim 1 in which the means for sensing the rotary motor power comprise: a. a rotary power sensor mounted upon the shaft of the rotary motor; b. means for converting the rotary motion of the shaft measured by the rotary motor power sensor to an electrical signal; and c. electrical circuit means to transmit the electrical signal from the rotary motor power sensor to said computer means.
Claim 4
Dependent Claim
57 words
The electronic supervisory control system of claim 1 in which the means for sensing the rotary motor power comprise: a. an electrical rotary motor power sensor connected to the power line of the rotary motor; and b. an electrical circuit means to transmit an electrical signal from the electrical rotary motor power sensor to said computer means.
Claim 5
Dependent Claim
49 words
The electronic supervisory control system of claim 3 in which the means for sensing the rotary motor speed comprise: a. an electrical rotation sensor connected to the kelly; and b. an electrical circuit means to transmit an electrical signal from the electrical kelly rotation sensor to said computer means.
Claim 6
Dependent Claim
86 words
The electronic supervisory control system of claim 4 in which the means for sensing the penetration rate of the drill bit comprise: a. an electrical rotation sensor connected to the rotary table; b. an electrical depth sensor connected to the drill string; c. means for integrating the electrical signals from the electrical rotary table rotation sensor and electrical depth sensor to produce a rate of penetration electrical signal; and d. an electrical circuit means to transmit the rate of penetration electrical signal to said computer means.
Claim 7
Dependent Claim
46 words
The electronic supervisory control system of claim 5 in which the computation by said computer means of a corrected d exponent is conducted by an analog computer receiving the electrical signals of rate of penetration, weight on the bit, hole size and mud ratio in formation.
Claim 8
Dependent Claim
40 words
The electronic supervisory control system of claim 6 in which the corrected d exponent, rotary motor torque and rate of penetration computed signals are received from the appropriate sensors and analog computer and are recorded on said means for recording.
Claim 9
Dependent Claim
26 words
The electronic supervisory control system of claim 7 further comprising a bit time integrator for recording operational drilling time in conjunction with the sensor data recording.
Claim 10
Dependent Claim
88 words
The electronic supervisory control system of claim 8 further comprising: a. means for combining the rotary motor power electrical signal with an electrical signal from the bit time integrator to produce a bit wear and exposure electrical signal; b. means for combining the rotary motor power electrical signal with the rate of penetration electrical signal to produce an energy expended per depth electrical signal and for recording of the bit wear and exposure electrical signal and the energy expended per depth electrical signal on said means for recording.
Claim 11
Dependent Claim
19 words
The electronic supervisory control system of claim 9 wherein said means for recording is a depth driven electronic recorder.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |