GB1481872A - Logging method and system - Google Patents
Logging method and systemInfo
- Publication number
- GB1481872A GB1481872A GB4152374A GB4152374A GB1481872A GB 1481872 A GB1481872 A GB 1481872A GB 4152374 A GB4152374 A GB 4152374A GB 4152374 A GB4152374 A GB 4152374A GB 1481872 A GB1481872 A GB 1481872A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- borehole
- logging
- oscillator
- sensed
- 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
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000005553 drilling Methods 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
- G01V1/42—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging using generators in one well and receivers elsewhere or vice versa
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/10—Aspects of acoustic signal generation or detection
- G01V2210/16—Survey configurations
- G01V2210/161—Vertical seismic profiling [VSP]
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Environmental & Geological Engineering (AREA)
- Acoustics & Sound (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Mining & Mineral Resources (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
1481872 Well-logging HUGHES TOOL CO 24 Sept 1974 41523/74 Heading G1G A borehole is logged by generating an acoustic signal in the borehole, the signal having at any one time a single dominant frequency, coupling the signal with a selected acoustical compliance having walls partially formed by a portion of the borehole, detecting characteristics of the generated signal waveform, and recording the characteristics as a function of depth of the portion. In a logging-while-drilling embodiment, mud pumped down the drill string actuates a fluidic oscillator of known type, details given, positioned just above the drill bit. The oscillator output amplitude and/or frequency depends on the compliance of a cavity defined by the borehole wall portion between the bit and the oscillator; hence it depends on the earth formation type and the condition of the wall. The acoustic signal is sensed at the earth surface by a transducer coupled with the drill string or mud, or by summing the outputs of surface geophones. The sensed signal is recorded and is compared visually or automatically with a reference signal. Alternatively the logging may be done in a ready-drilled hole, using another known type of acoustic source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4152374A GB1481872A (en) | 1974-09-24 | 1974-09-24 | Logging method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4152374A GB1481872A (en) | 1974-09-24 | 1974-09-24 | Logging method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1481872A true GB1481872A (en) | 1977-08-03 |
Family
ID=10420083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4152374A Expired GB1481872A (en) | 1974-09-24 | 1974-09-24 | Logging method and system |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1481872A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196113B (en) * | 2006-12-07 | 2011-04-20 | 中国石油天然气集团公司 | Single-emitting five-receiving sonic system virtual two-emitting five-receiving sonic system method |
-
1974
- 1974-09-24 GB GB4152374A patent/GB1481872A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196113B (en) * | 2006-12-07 | 2011-04-20 | 中国石油天然气集团公司 | Single-emitting five-receiving sonic system virtual two-emitting five-receiving sonic system method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |