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CDN (compensated density/neutron) . , - , ( ).
CDR (compensated dual resistivity) , ( ). , . ( , ). , . , .
, , .
IDEAL (Integrated Drilling Evaluation And Logging). (- ), . , .
, . ( , , ), ( , ), . - , .
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IDEAL (Integrated Drilling Evaluation and Logging system) :
1) , ;
2) RAB (Resistivity at the Bit) . - , ( ) , , .
, , . 60 MWD.
MWD Power Pulse ( 10 /).
, , .
1,8 , RAB 0,6 .
Teleco (1978), . MWD Teleco Oilfield Sevices 1978 . , , .
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EWRâ-S, 2 1983 . LWD. 6 R1 ( 18 ) MWD , . , .
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( 0,015 2000 ). . - , MWD . , . .
- , . , .