| Abstract |
The Tarim Basin has a relatively low surface heat flow (~42.5mW m-2), but the change of formation temperature is still obvious. Shuntuoguole area is located in the center of the basin. Based on the steady temperature measurement data of 34 wells, we obtained that the average temperature gradient of 0–5 km in the south and north of the Shuntuoguole area is 22.5 ℃ km-1 and 18.6 ℃ km-1 respectively. In combination with temperature measurement, thermophysical properties, logging and geophysical data, this study calculates the effective thermal conductivity and heat generation rate of the sedimentary layer of representative wells, constructs the crustal structure of the two areas, and compares the crustal heat flow. We have found that the structure of the basement crust is the main controlling factor for the formation temperature. The influence of thermophysical properties of sedimentary layer and basement morphology is not significant, and the effects of rapid sedimentation and hydrothermal activity has disappeared. The low mantle heat flow (12.5 mW m-2) is related to the thicker thermal lithosphere in the stable cratonic basin. |