CCTV News: The core obtained by the Deep-Tarco Well 1,000 meters underground also made its debut on February 20. Experts say that its preciousness is comparable to that of "lunar soil".
The reporter learned that the 10,000-meter-deep project environment is harsh, with the bottom temperature of the well as 220 degrees Celsius and the pressure exceeds 1,450 atmospheres. The drill tool close to 11 kilometers rotates and shakes like "noodles", and the shaking amplitude exceeds imagination. The operation of taking the stratigraphic core requires the drill tool to be stable. Under extremely high stresses of 10,000 meters deep, the formation rock is easy to break, and it is extremely difficult to take the vertical core to the ground.
Zhang Zhi, deputy director of the Oil and Gas Technology Research Institute of China Petroleum Tarim Oilfield, said that the core of the Deep-Taco well 10,000 meters underground is indeed as precious as the "lunar soil". The 10,000-meter core records the geological history of hundreds of millions of years deep in the earth and is direct evidence to study the evolution of the earth. This is the most complete rock sample obtained by humans below 10,000 meters, and is of great significance to earth science research.
Based on geological samples and data such as cores, rock chips, and wells, China Petroleum researchers have drawn the first 10,000-meter geological profile in Asia, providing first-hand physical data for deep scientific exploration and oil and gas exploration, and will strongly support the research on major basic scientific issues such as the deep structure and material composition of the earth, the evolution of the earth, and climate change.
Sun Jinsheng, an academician of the Chinese Academy of Engineering, said that enrich and improve the understanding of oil and gas geology in the deep 10,000 meters. Drilling high-quality source rocks in the well section of the Cambrian formation 10851-10910 meters is expected to expand the field of deep-ground oil and gas exploration. It is confirmed that two types of carbonate reservoirs have been developed in the depths of 10,000 meters in the Tarim Basin.
