Geothermal energy

as a clean energy source

plays an important role in China's energy transition. Energy companies across the country are actively promoting geothermal development projects. PetroChina Jidong Oilfield Company is a leader in the large-scale development of geothermal resources and has established the largest geothermal heating demonstration base in China

the Caofeidian new town geothermal heating project. As a key project for public welfare

geothermal heating requires cost reduction

quality improvement

and efficiency enhancement for large-scale development. With long construction cycles and stringent requirements

Jidong Oilfield has achieved low-cost

high-efficiency geothermal well drilling through various technological measures

including integrated geological engineering profile design

optimization and simplification of wellbore structure

cementing design optimization

and rapid drilling technology improvements. This research combines practical case studies from the Jidong Oilfield geothermal heating project

analyzing the factors influencing cost and construction progress

identifying construction issues

and detailing countermeasures and implementation effects. This paper offers valuable solutions for optimizing geothermal well design and cost reduction in large-scale geothermal development projects.