FIELD: oil-and-gas industry.
SUBSTANCE: invention relates to hole surveying and is intended for centring of instruments at their displacement along the borehole. The proposed device for centring of the downhole instruments comprises the main and extra systems of convex plate springs. Ends of the said main system of springs are articulated with extreme support sliders siding on a downhole instrument support guide. The number of springs of the extra system equals that of the main system. Note here that the ends of every spring of the said extra system can slide over the guide of the appropriate spring of the main system.
EFFECT: decreased sizes of downhole instruments, expanded applications.
2 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DOWNHOLE INSTRUMENT CENTERING DEVICE | 2004 |
|
RU2274744C1 |
| DEVICE FOR CENTERING DEEP WELL GEOPHYSICAL INSTRUMENTS | 0 |
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| DEVICE FOR CENTERING DEEP-WELL INSTRUMENTS | 0 |
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|
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| TELEMETERING SYSTEM TO CHECK DEPTH PARAMETERS DURING OPERATION OF HOLES | 2000 |
|
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| FOUR-ARM CALIPER- FLAW DETECTOR FOR INVESTIGATION OF TECHNICAL STATE OF CASING PIPES AND TUBING STRINGS OF OIL-GAS WELLS | 2010 |
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RU2102579C1 |
