Is it true that a large oil field was discovered in Qingyang, Gansu?

It is true that a large oil field was discovered in Qingyang, Gansu.

According to Gansu Daily and CCTV Financial Report, Changqing Oilfield discovered Qingcheng Oilfield with a reserve of 654.38 billion tons in Qingyang, Gansu! Recently, Changqing Oilfield released this news in the press room of the provincial government information office. This new discovery also marks a major breakthrough in the field of unconventional oil exploration in China.

After Qingyang Oilfield was discovered, China named it Changqing Oilfield. However, in the subsequent exploration, China discovered that Changqing Oilfield spanned a large span, spanning Shaanxi, Shanxi, Gansu, Ningxia and Inner Mongolia. According to the development plan of Daqing Oilfield itself, Daqing Oilfield will still strive to stabilize 40 million tons in the next five years and 20-25 million tons in 30 years.

Influencing factors of oilfield

The driving type of oil field is related to the choice of development mode. According to the oil storage situation, decide what power (natural energy or artificial pressure maintenance) to use to develop the oil field. The ultimate recovery rate is the highest, which can reach 50-30%, by using the energy of high-pressure water at the edge of oil field driven by water pressure.

Gas pressure drives the oil field, and the energy of gas in the form of gas cap pushes crude oil to flow to the bottom of the well, and the final recovery rate is 40-50%; Dissolved gas drives the oil field, and the gas separated from the oil layer expands to make the crude oil flow to the bottom of the well, and the final recovery ratio is only15-30%; Elasticity drives the oil field, which is compressed by rock pressure and oil. Using the power of reservoir depressurization, the oil body expands and flows to the bottom of the well.

Gravity drives the oilfield, and crude oil flows to the bottom of the well by its own gravity. The recovery ratio of the latter two oilfields is low. The difference of ultimate recovery ratio affects the utilization degree and investment effect of resources, directly affects the total investment and development speed of oilfield development, and of course directly affects the development value of oilfield, which plays a great role in oilfield layout. In addition, the well site layout should also be considered.

The above contents refer to Baidu Encyclopedia-Oilfield.