At 10:30 on July 20, CNPC Shendi Chuanke 1 well, the most difficult drilling well in the world, started drilling in the Sichuan Basin. Prior to that, on May 30, CNPC Deepland Tako 1 well was drilled in the Tarim Basin. One north and one south, the "double stars" of the 10,000-meter deep well shine, providing an important foundation and support for my country's future scientific research and oil and gas resource development.
The geological structure is complex and the 7 difficulty indicators rank first in the world.
Generally speaking, the industry defines wells with a depth of 4,500 meters to 6,000 meters as deep wells, wells with a depth of 6,000 meters to 9,000 meters as ultra-deep wells, and wells with a depth of more than 9,000 meters as ultra-deep wells. Ultra-deep well drilling is the field with the most technical bottlenecks and the greatest challenges in oil and gas engineering.
Well Shendi Chuanke 1, located in the northwest of the Sichuan Basin, is surrounded by mountains and mountains, with a ground elevation of 717 meters and a designed well depth of 10,520 meters. There are multiple sets of high-quality reservoirs stacked in ultra-deep layers in the region, and the accumulation conditions are superior. Once successful, it is expected to discover new ultra-deep large-scale natural gas storage increase target areas.
According to Zhao Luzi, an enterprise technical expert of PetroChina Southwest Oil and Gas Field Company, Sichuan has made a major exploration breakthrough in the Penglai Sinian-Lower Paleozoic at an ultra-deep level of 6,000 to 8,000 meters. The condition of the gas reservoir group. There are only 2 wells drilled at a depth of 8,000 meters, "Wutan 1 Well" and "Pengshen 6 Well". The exploration degree is extremely low and the exploration potential is huge.
The localization rate of independent research and development equipment is over 90%.
Without diamonds, how can we do porcelain work. During the 10,000-meter-deep well drilling process, there will be many challenges, the biggest of which is high temperature.
"During the repeated demonstrations, everyone had a lot of worries. The completion of 9,000 meters does not mean the completion of 10,000 meters." Yang Yu said that when the depth of the well exceeds seven or eight kilometers, the difficulty does not increase linearly for each meter down. is a geometric growth. Below 10,000 meters, the high temperature of 224 degrees Celsius can make metal drilling tools as soft as noodles, and the ultra-high pressure environment of 138 MPa is like diving into the deep sea of 13,800 meters, far exceeding the seawater pressure of the Mariana Trench, the deepest ocean in the world.
The 10,000-meter drilling is a "sharpening stone". It is not only an attempt to "explore treasures" in the deep, it is as mysterious as "unblinding the box", but also a transcendence of self, which needs to constantly refresh the limit. The implementation of Shendi Chuanke 1 well will further reveal the secrets of evolution under the Sinian strata, explore 10,000-meter ultra-deep oil and gas resources, innovate and form my country's ultra-deep oil and gas accumulation geological theory, and promote my country's oil and gas engineering core technology and equipment Ability to go one step further.
Post time: Aug-18-2023
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