The sealing problem of 10,000-meter deep wells is technically solved by Tester’s fireproof plugging module

The deep earth hides a lot of resources and is full of unknown dangers. With the increase in energy demand, exploring deep underground has become the focus of competition among countries. Recently, experts from the China Petroleum Society said: my country’s 10,000-meter deep-earth drilling technology has reached the world’s leading level, which is as significant as the lunar exploration project. This exploration of “marching into the depths of the earth” is changing human cognition of the earth.
1. The “shortest board” of deep-earth drilling: fireproof plugging module becomes a key test
To obtain resource information in the deep earth, it is necessary to establish a channel underground through drilling. At present, China’s deep-earth Taco 1 well has discovered natural gas in the strata below 10,000 meters, and the rock samples obtained are like “underground specimens”. However, every step deeper in drilling must overcome many difficulties, among which the penetration and sealing of cables and pipelines is particularly critical: corrosive liquids in the strata, deformation and vibration pressure caused by high temperature and high pressure, any failure of sealing may cause serious accidents. Traditional fireproof plugging sealing materials are easily damaged in highly corrosive environments, and fixed sealing structures are difficult to adapt to the thermal expansion and contraction of pipelines, just like buttons on clothes that are too tight and easy to break, becoming the “shortest board” of deep drilling.
2. New technology breakthrough: TST seal fireproof plugging module copes with extreme environments

The radius of the earth is about 6,400 kilometers, and the deepest human drilling is only about 13 kilometers, which is equivalent to carving on an eggshell. For every 1,000 meters of stratum, the temperature rises by 30°C, the pressure increases by 8-12 MPa (equivalent to 8-12 kg of pressure per square centimeter), and the rock becomes harder and harder. Under such extreme conditions, the cable and pipe penetration sealing system developed by Shenzhen TST Seal Technology Co., Ltd. shows excellent performance:

√ Using EPDM low-smoke and halogen-free formula, it is resistant to corrosion by acid, alkali, salt and oil media

√ Adapt to temperature changes from -52℃ to 90℃

√ Dynamic variable diameter technology covers φD15~500mm cables/pipes, and supports later expansion and adjustment;

√ Reserve expansion space, which can automatically compensate for the thermal expansion and contraction of the pipeline

√ No maintenance is required after installation, and the service life is up to 30 years

In ultra-deep drilling, this system achieves “zero leakage” and provides reliable protection for engineering safety.

3. From being controlled by others to independent breakthroughs: China’s technological counterattack

The progress of deep drilling technology has witnessed the self-reliance of China’s science and technology. During the oil war 60 years ago, we insisted on independent innovation in the technological blockade; now in the field of MCT sealing technology, we have switched from relying on imports to domestic supply. In the past, the purchase price of imported MCT sealing equipment was not only high, but also due to long-distance cross-border transportation, complex customs clearance procedures and special protection requirements, it often had to bear high transportation and insurance costs.
TST seal’s penetration sealing system adopts a modular design, which increases the installation efficiency by 60%. A single person can complete the replacement, which is particularly suitable for later transformation projects and greatly reduces the cost of use.

4. Overcoming difficulties: TST seal’s R&D spirit
The road to deep well drilling is full of challenges. There have been leakage dangers at a depth of 7,000 meters, which required 46 hours of continuous rescue; there have been drill pipe jams, which must be handled every second… These all show the hardships and value of scientific exploration. The TST seal team also made great efforts in the development of the MCT sealing system: thousands of simulation experiments were carried out, from material formulation to structural design, continuous optimization, from certification testing to on-site commissioning, strict control, to ensure that every detail can withstand the test of the harsh environment of 10,000 meters of formation. This spirit of persistence in tackling key problems and courage to innovate is an important force supporting major national projects.

5. Exploring the Deep Earth: Writing the “Underground Legend” of the New Era

When the core samples of the Deep Earth Taco 1 well were taken out and the 10,000-meter drill bit continued to advance into the depths of the earth, we saw not only a technological breakthrough, but also a country’s determination to break through the blockade and take the initiative in energy. The MCT sealing system of TST seal is like building an “invisible protective wall” in the 10,000-meter stratum to protect the safety of the project. This exploration of “marching into the depths of the earth” is transforming underground resources into a driving force for development, leaving a mark of China in the history of science and technology.