详细信息   

• 责任者：Zhang Feng (College of Geo-Resources and Information ; China University of Petroleum （East China） ; Qingdao 266555 ; China) ; Yuan Chao
• 刊名：Chinese Journal of Geophysics
• 出版年：2010
• 卷期：53(10)
• 关键词：中子测井 ; neutron logging ; 自然伽玛测井 ; gamma-ray logging
• 页码：p.2527-2533
• 图表：5 illus., 2 tables 16 refs.
• 分类号：1600
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

摘要

The dual gamma spectrum saturation logging based on pulsed neutron source is a new technology that can at the same time record inelastic scattering and capture gamma ray spectra, along with gamma ray time spectrum at the far and near gamma ray detector by means of a special pulse and measurement timing design. It is found that counting statistics of inelastic scattering and capture gamma ray is superior to foreign instruments by using large-diameter instrument and BGO crystal detector. The gamma ray time spectrum after repeated pulse neutron emission still meets the exponential decay law, and the channel count of gamma ray time spectrum is cumulated, so its counting statistics is better than conventional neutron lifetime logging.