Because there are a lot of reference data about study area and is absence of known oil-soil field to experimentation research, additionally the study area is affected by factors of complex surface landform, various lithlogy etc. .

• 若尔盖地区受复杂地表景观及岩性等因素的影响较大，而且没有已知油气田可供试验研究，可供参考对比的资料也很少，仅仅采用一种技术是不能断言油气信息的真实性、有效性，而是有必要采用不同指标相互补充，相互印证。