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自从补偿中子测井仪在油田投入使用以来,刻度问题是最主要的问题,目前使用的三级刻度器由于不能经常与二级刻度标准对比,难以保证刻度精度和测井资料的一致性。在各测井站建造刻度井,不仅成本很高、工期长,而且不便与一级标准对比。为了尽快解决补偿中子测井仪的二级刻度标准,西安石油勘探仪器总厂最近试制成功一种二级刻度器,这种刻度器与国外德莱赛公司的同类产品相比,具有环境影响小,操作方便,刻度时刻度器表面剂量低,操作人员受到的照射少等优点。刻度器主体是φ500×
Since the compensation neutron tool was put into operation in the oil field, the scale problem is the most important issue. The current three-stage scale can not guarantee the consistency of scale accuracy and well logging data because it can not always be compared with the second-level calibration standard. The construction of scale wells at various logging stations is not only costly and has a long construction period, but also inconveniences with the first grade standard. In order to solve the secondary calibration standard of compensated neutron logging tool as soon as possible, the Xi’an Petroleum Exploration Instrument General Factory has recently successfully completed a two-stage scale, which has an environmental impact compared with the similar products from foreign Dresser companies Small, easy to operate, the scale when the scale surface dose is low, the operator received less radiation and so on. The scale body is φ500 ×