煤田岩性密度测井仪器的研制

本文对岩性密度测井原理、仪器的研制方案等进行了论述。介绍了煤田岩性密度测井仪的主要电路框图,对仪器的刻度进行了探索,并介绍了仪器的性能指标,对测井资料应用提出了展望。

Development of a Coal Litho Density Logging Device

This paper discusses the unsuitability of the petroleum litho density tool in coal logging, provides the research plan of the coal litho dentsity tool, infers the response equation of the P., introduces its structure, the logic relations of the chief electronic circuit, power supply and information transmitting system, its function, and calibration method. Finally it points out the perspective of its appliance in coal logging. To compare with other radioactive logging instruments, this equipment has two unique properties; 1) Using compound radioactive source ("7Cs, 3. 7GBq, 662keV j241Am , 3. 7GBq, 59keV) remedies the defect of the single-soure instrument. 2)Using soft joint pressing system, making the mechanic structure simpler, and lessening the failure rate.