IE45473L - Effective downhole measurements in a well during drilling - Google Patents
Effective downhole measurements in a well during drillingInfo
- Publication number
- IE45473L IE45473L IE771801A IE180177A IE45473L IE 45473 L IE45473 L IE 45473L IE 771801 A IE771801 A IE 771801A IE 180177 A IE180177 A IE 180177A IE 45473 L IE45473 L IE 45473L
- Authority
- IE
- Ireland
- Prior art keywords
- speed
- variation
- digital signals
- acoustic signal
- during drilling
- Prior art date
Links
- 238000005553 drilling Methods 0.000 title abstract 2
- 238000005259 measurement Methods 0.000 title 1
- 238000000034 method Methods 0.000 abstract 2
- 230000010363 phase shift Effects 0.000 abstract 2
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)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Communication Cables (AREA)
Abstract
Measuring method during the drilling for momentarily to vary the speed of an acoustic signal generator driven by a motor, with respect to its normal speed constant, in order to introduce an appropriate shift in said acoustic signal.
The method consists in producing two digital signals in response to said variation in speed of the generator, the difference between said digital signals being representative of the phase shift of the acoustic signal which is caused by the variation in speed of the motor , and stopping said variation in speed of the generator, with respect to its normal speed, when the difference between said digital signals reaches a predetermined value representative of a predetermined phase shift.
[FR2366586A1]
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US72768576A | 1976-09-29 | 1976-09-29 | |
US05/727,687 US4103281A (en) | 1976-09-29 | 1976-09-29 | Measuring-while-drilling system having motor speed detection during encoding |
US05/727,686 US4100528A (en) | 1976-09-29 | 1976-09-29 | Measuring-while-drilling method and system having a digital motor control |
Publications (2)
Publication Number | Publication Date |
---|---|
IE45473L true IE45473L (en) | 1978-03-29 |
IE45473B1 IE45473B1 (en) | 1982-09-08 |
Family
ID=27419101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE1801/77A IE45473B1 (en) | 1976-09-29 | 1977-08-30 | A 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) | GB1592995A (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 GB6491/80A patent/GB1592995A/en not_active Expired
- 1977-09-27 GB GB40117/77A patent/GB1592993A/en not_active Expired
- 1977-09-27 BR BR7706432A patent/BR7706432A/en unknown
- 1977-09-27 GB GB6469/80A patent/GB1592994A/en not_active Expired
- 1977-09-27 NL NL7710508A patent/NL7710508A/en active Search and Examination
- 1977-09-28 EG EG560/77A patent/EG13641A/en active
- 1977-09-29 DE DE19772743871 patent/DE2743871A1/en not_active Withdrawn
- 1977-09-29 DK DK432177A patent/DK432177A/en not_active Application Discontinuation
-
1978
- 1978-07-06 ES ES471490A patent/ES471490A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BR7706432A (en) | 1978-07-04 |
NO150059C (en) | 1984-08-08 |
FR2366586B1 (en) | 1982-09-10 |
NL7710508A (en) | 1978-03-31 |
IE45473B1 (en) | 1982-09-08 |
DE2743871A1 (en) | 1978-03-30 |
EG13641A (en) | 1982-03-31 |
FR2366586A1 (en) | 1978-04-28 |
NO772988L (en) | 1978-03-30 |
ES471490A1 (en) | 1979-02-01 |
NO150059B (en) | 1984-04-30 |
GB1592994A (en) | 1981-07-15 |
OA05771A (en) | 1981-05-31 |
MX143691A (en) | 1981-06-24 |
DK432177A (en) | 1978-03-30 |
GB1592993A (en) | 1981-07-15 |
GB1592995A (en) | 1981-07-15 |
ES462412A1 (en) | 1979-06-16 |
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