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《Well Logging Technology》 2005-04
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The Research and Development of SL3120B Digital Combination Logging Tool

LI Liang-sheng(Logging Research Centre of Shengli Logging Co.,SINOPEC,Dongying,Shandong 257096,China)  
The SL3120B is a kind of digital combination logging tool.This paper deals with its structure,key techniques,electronic cartridge,working principle and applications.The tool's signal pickup uses 3506PCM transmission mode,all the signals are digitalized downhole,so its anti-interference ability has been greatly increased.A newly designed caliper uses four independently moveable 4-arm clamp pistons with the electrode on one of the arms to ensure the caliper measuring precision.One logging pass may provide nine more curves such as 4 m electrode,2.5 m electrode,X-Y caliper, SP,micro-electrode and GR,etc.Log operations that need four times in the past now can be finished at one time,it is worth saying this is a completely consecutive log operation.
【CateGory Index】: P631.83;
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【Co-references】
Chinese Journal Full-text Database 2 Hits
1 Yao Jiahua (Well Logging Division,Zhongyuan Petroleum Exploration Bureau, SINOPEC, Henan 457001, P. R. China), Yao Wei and Wang Jianping,;The Enlightenment of Modern Well Logging Technique Development[J];Fault-block Oil & Gas Field;2001-03
2 Fa Lin, Wu Yang and Li Weidong.;Simulation and calculation of sonic logging transmission system[J];Petroleum Instruments;2005-04
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