Are there only sandstone formations in oil?
Yes, China is mainly Sandstone on land, from a global perspective, carbonate is also a major category,
Its oil and gas reserves accounted for 50% of the world's total reserves, oil and gas production up to more than 60% of the world's total output. In addition to the above two categories there are special types, such as magmatic rocks, metamorphic rocks can also be the development of oil rock
