Abstract:Gamma Ray curve is mainly used for the location of lithology and calculate the clay content.Because the vast majority of onshore oil field development has been to the late,most oil fields shift to development of thinner pays of inferior quality,but the resolution of current Gamma Ray log has only 0.5-0.6 meter, difficult to meet the needs of oil field development.Conventional data processing methods can improve the resolution of well logs but can’t solution the problem of the resolution fundamentally, and there are many uncertain factors.For this reason,we design and produce polycrystal high-resolution Gamma Ray log instrument,and combined use of non-recursive adaptive techniques for processing the logging data,obtain a high-resolution Gamma Ray curve which has 0.02 meter resolution. Inspection by several production wells and coring wells of Daqing Oilfield,proved this mathod stable and has high-resolution, effective meet the needs of later development of oilfield.