What stage has the exploitation of combustible ice in China entered at present?

This is a 37-storey semi-submersible drilling platform with the largest working water depth and deepest drilling depth in the world. Recently, it has attracted the attention of the whole world, and our country has successfully tried to mine combustible ice here. Combustible ice, that is, combustible ice, is scientifically called "natural gas hydrate". Organic molecules dominated by methane are surrounded by water molecules, and their calorific value is much higher than that of petroleum. After combustion, only carbon dioxide and water are produced, and the reserves can be used by human beings 1000. Today, when human beings are increasingly trapped by energy, the success of the trial mining of combustible ice naturally attracts much attention. Since China successfully tried to exploit combustible ice and became the first country in the world to obtain a continuous and stable airflow in this sea area, there are different opinions. Some people say that the exploitation of combustible ice is not so easy, and it is too environmentally friendly, which puts a question mark on it.

Before the trial mining, China Geological Survey conducted an environmental standard survey on more than 0 lines of 10, and obtained the author's data on marine geology, marine biology, seawater chemistry and dynamic parameters of seabed strata. During the trial production, strict environmental protection measures were taken in accordance with the international environmental management system and engineering safety risk management standards. Lu Qing 'an, deputy director of the trial production site command, introduced that during the trial production, the seabed subsidence such as methane and carbon dioxide was monitored in real time through the four-in-one monitoring system of atmosphere, seawater, seabed and underground. Compared with the background data, there is no abnormal change in methane, the seabed topography remains unchanged, there is no environmental pollution, and geological disasters will not occur. On the other hand, China's first 4,500-meter working underwater robot "Haima" dived into the seabed, and no seabed topography change or methane leakage was found.

China independently developed the main technical equipment system, greatly improved the deep-sea exploration and development capability, and formed six major 32 core technologies including six advantages. 12 core equipment has been successfully developed, in which the oil well regulating device has broken the foreign monopoly. These technologies and equipment have broad application prospects in the field of marine resources development and marine engineering, which will form a new industrial chain of deep-sea technologies and equipment and strengthen China's ability of "deep-sea entry, deep-sea exploration and deep-sea development". The environmental protection and monitoring system established in China further proves the feasibility of green development of natural gas hydrate. China has established a "four-in-one" environmental monitoring system for atmosphere, water area, seabed and underground by independent innovation of environmental risk prevention technology system to ensure that methane does not leak and geological disasters do not occur during trial mining.

The industrialization of natural gas hydrate can be roughly divided into five stages: theoretical research and simulation test stage, exploratory test stage, experimental test stage, productivity test stage and commercial exploitation stage. This trial production successfully achieved the leap from the second stage to the third stage, and took a very important step in the industrialization process of natural gas hydrate. At present, the second trial production is still in progress, and scientific and technical personnel will speed up the industrialization of natural gas hydrate exploration and development and carry out the experimental work needed for productive trial production.