ES471490A1 - Digital motor control method and apparatus for measuring-while-drilling - Google Patents
Digital motor control method and apparatus for measuring-while-drillingInfo
- Publication number
- ES471490A1 ES471490A1 ES471490A ES471490A ES471490A1 ES 471490 A1 ES471490 A1 ES 471490A1 ES 471490 A ES471490 A ES 471490A ES 471490 A ES471490 A ES 471490A ES 471490 A1 ES471490 A1 ES 471490A1
- Authority
- ES
- Spain
- Prior art keywords
- phase change
- steps
- measuring
- drilling
- accumulate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005553 drilling Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 230000001186 cumulative effect Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
- E21B47/20—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry by modulation of mud waves, e.g. by continuous modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Earth Drilling (AREA)
- Control Of Electric Motors In General (AREA)
- Communication Cables (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
A method for measuring during drilling to momentarily change the speed of a motor-driven acoustic signal generator from a normally constant rate that provides a carrier frequency signal to effect a phase change selected to modulate said carrier signal, comprising the steps of: (a) changing the generator speed away from the normal regime to accumulate a portion of the selected phase change, and (b) returning the generator speed to the normal rate to thereby accumulate the remainder of said phase change selected, characterized by: generating a control signal when the cumulative phase change in one of steps (a) and (b) reaches a prescribed value; and adjusting said prescribed value in response to the cumulative phase change during at least one preceding step of the other of steps (a) and (b). (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US72768576A | 1976-09-29 | 1976-09-29 | |
| US05/727,686 US4100528A (en) | 1976-09-29 | 1976-09-29 | Measuring-while-drilling method and system having a digital motor control |
| US05/727,687 US4103281A (en) | 1976-09-29 | 1976-09-29 | Measuring-while-drilling system having motor speed detection during encoding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES471490A1 true ES471490A1 (en) | 1979-02-01 |
Family
ID=27419101
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES462412A Expired ES462412A1 (en) | 1976-09-29 | 1977-09-16 | Digital motor control method and apparatus for measuring-while-drilling |
| ES471490A Expired ES471490A1 (en) | 1976-09-29 | 1978-07-06 | Digital motor control method and apparatus for measuring-while-drilling |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES462412A Expired ES462412A1 (en) | 1976-09-29 | 1977-09-16 | Digital motor control method and apparatus for measuring-while-drilling |
Country Status (12)
| Country | Link |
|---|---|
| BR (1) | BR7706432A (en) |
| DE (1) | DE2743871A1 (en) |
| DK (1) | DK432177A (en) |
| EG (1) | EG13641A (en) |
| ES (2) | ES462412A1 (en) |
| FR (1) | FR2366586A1 (en) |
| GB (3) | GB1592993A (en) |
| IE (1) | IE45473B1 (en) |
| MX (1) | MX143691A (en) |
| NL (1) | NL7710508A (en) |
| NO (1) | NO150059C (en) |
| OA (1) | OA05771A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3035905C2 (en) * | 1980-09-24 | 1982-12-30 | Christensen, Inc., 84115 Salt Lake City, Utah | Device for the remote transmission of information from a borehole to the surface of the earth during the operation of a drilling rig |
| US5283768A (en) * | 1991-06-14 | 1994-02-01 | Baker Hughes Incorporated | Borehole liquid acoustic wave transducer |
| GB2261308B (en) * | 1991-11-06 | 1996-02-28 | Marconi Gec Ltd | Data transmission |
| CN115977592B (en) * | 2023-03-01 | 2024-05-17 | 电子科技大学 | Speed-frequency self-adaptive clock applied to wireless perforation system |
-
1977
- 1977-08-30 IE IE1801/77A patent/IE45473B1/en unknown
- 1977-08-30 NO NO772988A patent/NO150059C/en unknown
- 1977-09-16 ES ES462412A patent/ES462412A1/en not_active Expired
- 1977-09-21 FR FR7728390A patent/FR2366586A1/en active Granted
- 1977-09-26 OA OA56285A patent/OA05771A/en unknown
- 1977-09-26 MX MX170694A patent/MX143691A/en unknown
- 1977-09-27 GB GB40117/77A patent/GB1592993A/en not_active Expired
- 1977-09-27 GB GB6491/80A patent/GB1592995A/en not_active Expired
- 1977-09-27 NL NL7710508A patent/NL7710508A/en active Search and Examination
- 1977-09-27 GB GB6469/80A patent/GB1592994A/en not_active Expired
- 1977-09-27 BR BR7706432A patent/BR7706432A/en unknown
- 1977-09-28 EG EG560/77A patent/EG13641A/en active
- 1977-09-29 DK DK432177A patent/DK432177A/en not_active Application Discontinuation
- 1977-09-29 DE DE19772743871 patent/DE2743871A1/en not_active Withdrawn
-
1978
- 1978-07-06 ES ES471490A patent/ES471490A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL7710508A (en) | 1978-03-31 |
| GB1592994A (en) | 1981-07-15 |
| NO150059C (en) | 1984-08-08 |
| GB1592993A (en) | 1981-07-15 |
| EG13641A (en) | 1982-03-31 |
| DE2743871A1 (en) | 1978-03-30 |
| IE45473B1 (en) | 1982-09-08 |
| NO772988L (en) | 1978-03-30 |
| GB1592995A (en) | 1981-07-15 |
| FR2366586A1 (en) | 1978-04-28 |
| BR7706432A (en) | 1978-07-04 |
| IE45473L (en) | 1978-03-29 |
| FR2366586B1 (en) | 1982-09-10 |
| NO150059B (en) | 1984-04-30 |
| DK432177A (en) | 1978-03-30 |
| ES462412A1 (en) | 1979-06-16 |
| OA05771A (en) | 1981-05-31 |
| MX143691A (en) | 1981-06-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19971201 |