5200 meters! my country's deepest geothermal exploration well completed
Release time：2024-08-15click：1
On April 8, we learned from the Sinopec Information Office that the Fushenre 1 well deployed by Sinopec in Hainan was successfully drilled with a depth of 5,200 meters, setting a new record for the deepest geothermal scientific exploration well in my country. The successful drilling of this well revealed the formation and enrichment mechanism of deep geothermal in South China, which means that my country has made new breakthroughs in hot dry rock exploration in terms of region and depth. It will help improve the large-scale development and utilization of geothermal resources in South China and help adjust the regional energy structure. of great significance.
Geothermal energy is a stable, reliable, green and low-carbon renewable energy with the characteristics of large reserves, wide distribution, clean and environmental protection. At present, the development and utilization of geothermal resources in my country is mainly based on shallow and medium-deep hydrothermal geothermal resources. However, the development of deep geothermal resources below 3,000 meters, especially hot dry rock resources, is still in the exploratory stage.
Hot dry rock generally refers to high-temperature rock buried thousands of meters underground with a temperature greater than 180°C and containing no or only a small amount of fluid inside. According to the China Geological Survey, the amount of hot dry rock geothermal resources within 3 kilometers to 10,000 meters underground in my country's land areas is equivalent to 856 trillion tons of standard coal. Even if only 2% is extracted, it can reach my country's annual production in 2023. 2993 times the energy consumption.
Well Fushenre 1 is a key geothermal exploration well deployed by Sinopec Petroleum Exploration and Development Research Institute. The drilling target is granite 250 million years ago. It is a deep dry hot rock geothermal well.
Since drilling started in August 2023, the well has applied a number of innovative technologies independently developed by Sinopec such as "dual-drive drilling + high-pressure injection", and the temperature exceeded 150 at nearly 3,900 meters. ℃, reaching high-temperature geothermal standards. At 5,000 meters, the temperature exceeds 180℃, reaching the hot dry rock temperature limit stipulated in the national energy industry standards. It has formed a key technology for deep geothermal resource detection and evaluation, and achieved the expected goals and mission requirements of scientific exploration wells.
In the next step, Sinopec will carry out in-depth research and field tests based on Well Fushenre 1, and build the first deep geothermal production-university-research integrated field test research platform and development and utilization demonstration platform in South China. , explore and form theoretical methods and technical systems suitable for South China, and help my country achieve the "double carbon" goal.
