Geothermal energy

as a stable and sustainable clean energy source

is set to play a crucial role in China's energy structure transformation and the realization of the “double carbon” goal in the future. The Ordos Basin

noted for its abundant geothermal resources

still holds much untapped potential due to incomplete understanding of its reserves and distribution characteristics

and the relatively low level of exploration and development. Focusing on the Changqing Oilfield and its surrounding areas

the study delves into the geothermal geological characteristics using well data. It employs the unit volume method to estimate the geothermal resource reserves and c

onducts zoning based on the development and utilization potential of these resources. The study reveals that the formation structure in the area is relatively straightforward

with a general geothermal gradient of 2.2~3.0 ℃/hm. The primary thermal reservoir consists of conductive Mesozoic sandstone

while other thermal reservoirs

except for Luohe Formation

exhibit poor water yield. The geothermal resources in the region are distributed with higher concentrations in the western areas and lower in the east

with a total amount of 79.91 × 10

17

kJ. Among this a recoverable capacity of 6.39 × 10

17

kJ

and a geothermal fluid reserve of 2.47 × 10

12

m

3

have been identified Blocks such as Hongliugou-Dashuikeng-Jicun-Shancheng block

Zhanggoumen-Liuquzhen-Sanchazhen block and the block near Qingyang exhibit significant potential for geothermal resource development. Therefore

the study recommends prioritizing the redevelopment of abandoned oil and gas wells

alongside the construction of medium and deep casing heat exchange systems. This approach would facilitate the effective development and utilization of geothermal resources in these areas.