What Is Deep Well Drilling?

At this stage generally refers to drilling with wells (holes) deeper than 6 000 to 8 000 meters.

Ultra-deep well drilling

Exploration and development of deep oil and gas resources is the main way to achieve the strategic replacement of oil and gas resources in oil fields. Vigorously developing deep well ultra-deep well drilling technology is not only the need for exploration and development, but also to actively adapt to the needs of competition in drilling engineering technology service market.

Relevant data show that China's recoverable oil resources are currently estimated at 15 billion tons, and about 8.5 billion tons to be discovered and proven, accounting for 57% of the recoverable oil resources. This part of the oil resources to be proved is mainly distributed in the four basins of Tarim, Junggar, Qaidam, and Tuha, and is the main replacement area for China's oil production. At the same time, 73% of this resource is buried below 5,000 meters. Achieving breakthroughs in oil and gas in new regions, new fields, and new horizons, especially deep ones. Finding and expanding the oil and gas range and fields of oilfields has become the main means to successfully achieve China's petroleum resource replacement goals. Is the most important way to achieve this. ^[1]

It is mainly used in two aspects:

First, in the field of petroleum geological survey, drilling of deep oil and gas reservoirs, or standard formation drilling for oilfield geology;

The second is deep-seated crustal tectonics for national or international cooperative geoscience research programs.

The deepest drilling in the world today is

The main reservoir of the Triassic reservoir in the Taipei Sag, Tuha Basin is buried at a depth of 4400-5100 meters. With the deepening of the oil and gas exploration and development in the oilfield, find new reserves and upper production layers and zones to ensure the sustainable development of the oilfield, and open up the potential for oil discovery in the deep lower Jurassic, Triassic and Permian areas of the Taipei Sag In the imperative, deep wells and ultra-deep wells have become the basic means for completing exploration targets. The Tuha Basin has many geological features, such as many faults, large formation collapse pressure, poor drillability, deep coal seam burial, and low reservoir pressure. It is difficult to drill deep wells. Therefore, accelerating the development of ultra-deep well ultra-deep well drilling technology is of great significance for improving the drilling speed and quality of deep-deep wells, improving the drilling level, and ensuring the realization of exploration and development goals. ^[1]