Development Background
Exploration and development of deep oil and gas resources is the main way to achieve oil and gas resources strategy in oilfield. Vigorously develop deep well super well drilling technology, both the needs of exploration and development, but also to actively adapt to the needs of drilling engineering technical services market competition.
The relevant information indicates that China's oil-canned resources are expected to be 15 billion tons, to be discovered and proved to be around 8.5 billion tons, accounting for 57% of the degree of petroleum resources. This part of the petroleum resources to be explored are mainly distributed in Tarim, Junggar, Qaidam, Thara, and the main replacement zone of China's oil production. At the same time, this part of the resource volume is buried below 5,000 meters. Realize new areas, new fields, new layers, especially deep oil and gas breakthroughs, find and expand the oil and gas range and field of oilfield, become the main means of succession of China's petroleum resources, and the rapid and scale development of deep well super well drilling technology. It is the most important implementation of this means.
Main Application
Mainly applied to two aspects:
First, in terms of petroleum geological conditions, drilling, or for Oilfield geological diamonds;
2 is a crust-constructed scientific deep diamond for national or international cooperative Earth Science Research Program.
The world's deepest drilling is
former Soviet Union's deepest hole in the Human Pacaga area, the cave has exceeded 7 miles (about 11.2 km), and then Forced to stop, it is planned to arrive at the interface between the crust and the mantle before the US drilling project, that is, Moholovich is not continuous (referred to as the Moho surface). It is part of the World Rock Plan. The number of ultra-deep wells in the United States is 400, most of which is completed by various oil companies, the deepest 9 583 meters is a deep well of a mainland. China has completed two more than 7,000 meters or more, the maximum depth is 7 175 meters drilled in Sichuan in 1978. Ultra-deep wells is also an important criterion that reflects a high degree of national geological research.
Technology is difficult to point
Super deep well drilling (18)
The power power power is powerful . It is necessary to have a strong lifting system, high pressure strong drilling pump and high-strength drill rod ;must have high quality durable drill bits that can effectively break rock in ultra-deep formation;
There is a high-quality drilling mud and well cement resistant cement;
and high strength cables, etc.
Executive ultra-deep well plan requires developed science and technology and economic level, and for a country, it is necessary to cooperate with various departments in various industries.
Social significance
Take the main oil layer of the Taipei depression of the Toma Basin buried 4400-5100 meters. With the continuous deepening of oil and gas exploration and development in oilfield, find new reservoirs and zone, ensuring sustainable development of oilfield, open up Jurah, three stacks, and two stacks in Taipei depression. In the imperative, deep well super well becomes a basic means of completing exploration goals. The Tuha Basin has a fault, large formation of collapse pressure, poor drilling, and low in the coal seam, the low reservoir pressure is low, and the deep well drilling is difficult. Therefore, accelerate the development of deep well-super well-exploiting drilling technology, improving the quality of deep well super well drilling speed and drilling quality, improving the level of drilling, and ensuring exploration and development goals have a very important significance.