Lithologic Reservoirs ›› 2024, Vol. 36 ›› Issue (2): 23-32.doi: 10.12108/yxyqc.20240203

• NEW ENERGY AND ASSOCIATED RESOURCES • Previous Articles     Next Articles

Status and development trends of geothermal development and utilization in oilfields of China

WANG Shejiao1, SHI Yizuo2, FANG Chaohe1, CAO Qian2, REN Lu3   

  1. 1. PetroChina Shenzhen New Energy Research Institute Co., Ltd., Shenzhen 518052, Guangdong, China;
    2. PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China;
    3. Research Institute of Exploration and Developmen, PetroChina Jidong Oilfield Company, Tangshan 063004, Hebei, China
  • Received:2023-08-25 Revised:2023-09-15 Online:2024-03-01 Published:2024-03-06

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Abstract: Based on the current situation of geothermal development in China，the characteristics of geothermal resource occurrence and distribution，and the comparison of different geothermal development methods，the potential for the development and utilization of geothermal resources in oilfields was analyzed，and the develop‐ment trends of China’s geothermal industry，especially oilfield geothermal，were discussed. The results show that：（1）China has abundant geothermal resources，mainly consisting of medium to low temperature geothermal resources. Shallow geothermal resources are distributed nationwide. Medium to low temperature geothermal resources are distributed in sedimentary basins，southeastern coastal areas，and uplift mountainous areas，forming a large area of thermal reservoirs containing geothermal water at different depths，which are hydrothermal geothermal resources. High temperature geothermal resources are concentrated in southern Xizang，western Sichuan，western Yunnan and Taiwan. China’s shallow geothermal energy resources（shallower than 200 m） have an annual mining output of 7×108 tons of standard coal.（2）Due to the environmental and efficiency issues in the development and utilization of shallow geothermal energy，the efficiency issues of direct heat exchange in deep wells，and the technical bottlenecks in the development and utilization of dry hot rocks，medium to deep hydrothermal geothermal resources will be the most important and practical field for the development and utilization of geothermal resources in China today.（3）A series of key technologies have been developed in the geothermal development of oilfields，including geothermal resource exploration and evaluation，sandstone formation reinjection，renovation of abandoned wells into geothermal wells，and high-temperature drilling and completion， all of which have been successfully applied in large-scale geothermal development projects. Oilfields have abundant produced water resources that can be directly utilized，and a large number of abandoned or inefficient oil wells can be transformed into geothermal wells through technological transformation for geothermal resource development，thereby reducing geothermal development costs and improving the economic efficiency of geothermal projects.（4）In addition to being used for energy consumption replacement and clean heating in oilfields， oilfield geothermal energy has great potential for development in the fields of medium-low temperature geothermal power generation，the production of associated resources such as helium，heat storage in depleted hydrocarbon reservoirs，and carbon dioxide sequestration. The comprehensive development and utilization of geothermal energy is the main direction for the future development of geothermal energy in oilfields.

Key words: oilfield geothermal energy, geothermal resource of hydrothermal type, geothermal heating, geothermal power generation, heat storage in depleted hydrocarbon reservoirs, carbon dioxide sequestration

CLC Number: 

  • TE09
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