Abstract：It is difficult to make certain of suitable shooting layers by ordinary shallow survey methods in Youquanzi area of Qiadam basin because of significant thickness of dry layer on the surface and thick low velocity layers (LVL). In view of abovemen-tioned problems and to match the seismic uphole survey,the study of surveying moisture content in logging core samples,electric logging and high density resistivity method were carried out. The joint surveys for surface structure of two experimental cross lines were implemented by using abovemen-tioned methods, which discovered that 1~2 well parts characterized by high moisture content and low resistivity within the scope of 35 m deep below surface could be still found out, which is suitable for seismic shooting. This set of joint survey method for surveying the subsurface provides a new tool for combination of non-seismic and seismic methods.
