Temperature measurement in the main hole of the Chinese Continental Scientific Drilling;

The palaeotemperature evolution of Bayindulan depresion has been recovered with the method of vitrinite reflectance.

2℃/100m between Tertiary and Quaternary period because of the continuous uplift erosion and the decrease of the Terrestrial heat flow, which made the palaeotemperature begin to decrease at early Tertiary.

Studying the palaeogeotherm of Dongying Sag by using vitrinite reflectance;

This paper restores the palaeogeotherm and palaeogeothermal gradient in Songliao Basin using several methods.

There were two relatively high palaeogeothermal stages,one in Cambrian-Early Ordovician and the other in Carboniferous-Permian.

Fluid inclusion microthermometry and apatite fission track analysis were used to reconstruct the Tertiary paleotemperature of the East depression,Liaohe basin.

The present temperature has been studied with testing data and the paleotemperature has been restored with fission track in apatite and fluid inclusion in Damingtun sag.

Based on the experiment, this research calculates kinetic parameters of kerogen vitrinite reflectance (R_o) through KINETICS software, and then calculates Cambrian-Ordovician paleotemperature of the well Tacan 1 combined with burial history.

The research results on the temperatures determined from the fluid inclusions showed that the paleo-temperature experienced three periods change, which was corresponding to that of the migration and accumulation of oil-gas.