FIELD: oil and gas production.
SUBSTANCE: method includes supply of short high-frequency signals into a bed, registration of time of reflected echo signals arrival and detection of clayey crust thickness based on the measured time. High-frequency signals are supplied from at least two positions, located at different distances from the clayey crust, amplitudes of signals are measured, supplied from these positions and reflected from the border of the interface "drilling mud - clayey crust", full resistance and speed of sound are identified in the clayey crust.
EFFECT: increased reliability and accuracy of clayey crust thickness definition.
9 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD TO DETERMINE ACOUSTIC CHARACTERISTICS OF CLAYEY CRUST | 2011 |
|
RU2473805C1 |
| METHOD FOR DETERMINING ACOUSTIC CHARACTERISTICS OF CLAY CAKE | 2011 |
|
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|
SU1013886A1 |
| ELECTROMAGNETIC LOGGING APPARATUS | 2009 |
|
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| METHODS AND GEARS FOR ULTRA SOUND VELOCITY MEASUREMENT IN DRILL MUD | 2003 |
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RU2329378C2 |
| ELECTROMAGNETIC PROBE | 2006 |
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| DEVICE FOR ACOUSTIC LOGGING WITH REFLECTED WAVES | 0 |
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SU654922A1 |
| DETERMINATION OF FLUID PARAMETERS AS PER ACOUSTIC LOGGING DATA | 2008 |
|
RU2477369C2 |
| 0 |
|
SU360791A1 |
