Influence of ultra-deep water drilling on conventional drilling

what can I say? First of all, I don't know whether you are engaged in deep-sea drilling or drilling.

First of all, let me define the so-called ultra-deep water drilling for you. In China, ultra-deep water drilling means that the water depth exceeds 1500m, while in foreign countries, the definition of ultra-deep water is that the water depth exceeds 3000m.

The biggest difficulty of ultra-deep water drilling is not the difficulty of drilling itself, but the equipment and technology before drilling.

Before drilling, the whole equipment is installed and debugged. There is no doubt that the total tonnage of the largest ultra-deepwater drilling platform abroad has reached 600,000 tons after its completion and installation. It is conceivable that the work before drilling is difficult.

Besides equipment, the deeper the water depth, the more advanced the equipment, which is beyond doubt. However, the ultra-deep water itself often isolates thousands of meters of seawater, and the strength of casing, the ability to cope with ocean currents and the stability of underwater well sealers all require 100% stability.

Finally, talk about technology. According to the current deepwater drilling technology in China, there are still several main problems to be solved:

1 cement sealing technology for first spudding cementing

2. Research and development of underwater well sealer.

3. Construction methods for dealing with underwater slopes and landslides

4. Construction technology for treating faults and unfixed seabed

5. Secondary well control technology for deepwater drilling.

Generally speaking, deep-water drilling is very difficult, and all the complex problems of land drilling are put at sea, so the processing difficulty must be doubled.