Original title: Gansu Longdong discovery of 1 billion ton oil field innovation technology opens the door to unconventional exploitation
On October 25, a press conference was held in Lanzhou to introduce the major achievements of exploration and development in Changqing Oilfield. The press conference disclosed that the exploration of Changqing Oilfield in Longdong, Gansu Province found a large Qingcheng oilfield with reserves of 1 billion tons, marking a major breakthrough in the field of unconventional oil exploration in China.
At present, with the growth of global oil and gas demand, unconventional oil and gas exploration and development represented by dense oil and shale oil and gas have sprung up. After a century and a half of conventional oil and gas stage, the world oil industry began to enter a turning point of paying equal attention to conventional and unconventional oil and gas development.
Fu Jinhua, deputy general manager of PetroChina Changqing Oilfield Branch, said at the scene that the reservoir of Qingcheng oilfield is located in Chang 7 source rock of Ordos Basin, which is a shale oil model that is very difficult to develop effectively. At the same time, its discovery is equivalent to contributing a medium-sized oilfield to the country.
[synch] Fu Jinhua, deputy general manager of PetroChina Changqing Oilfield Company
The reserves of unconventional reservoirs in chang7 source named after Qingcheng oilfield have passed the final review of the Ministry of natural resources. The newly increased proved oil reserves are 358 million tons and the predicted reserves are 693 million tons, forming a reserve scale of 1 billion tons. It has built a crude oil production capacity of 1 million tons in the old revolutionary base area of Qingyang, with an oil production capacity of 3 million tons, which is equivalent to contributing another medium-sized oilfield to the country.
[narration] in recent years, Changqing Oilfield has innovated and improved key technologies, forming a number of "technical tools" with Changqing characteristics with independent intellectual property rights, promoting the exploration and development of unconventional reservoirs in the source to achieve a revolutionary breakthrough. Fu Jinhua said that the key tools and materials were independently developed, which solved the problem of "neck sticking", and the cost decreased by 50% ~ 60% compared with similar foreign products.
[synch] Fu Jinhua, deputy general manager of PetroChina Changqing Oilfield Company
Technological breakthroughs in key fields have promoted the exploration and development process of unconventional reservoirs in the source of Changqing Oilfield. Changqing Oilfield adheres to independent innovation, innovates and improves key technologies around improving single well production, enhancing oil recovery and reducing development costs, and centrally solves a number of 'neck' technical problems.
Li Kui, deputy secretary of the Party committee of PetroChina Changqing Oilfield Company, said that the Ordos Basin has complex geological conditions. Facing world-class exploration and development problems, the oilfield has taken technological innovation as the first driving force to promote development, explored and formed a technical series for the exploration and development of low permeability tight oil and gas fields, and oil and gas exploration has continuously broken through the "forbidden zone", and the three-dimensional earthquake of vibroseis in the Loess Plateau Multi domain imaging logging and other technologies have reached the world advanced level.
[synch] Li Kui, deputy secretary of the Party committee of PetroChina Changqing Oilfield Company
Oil and gas development continued to challenge the "lower limit" of low permeability, aimed at the new trend of shale oil and tight gas development in the world, innovated and applied excellent and fast drilling technology, explored the operation mode of "large well cluster, horizontal well, compound, three-dimensional and industrialized", created a number of new records for unconventional oil and gas development in China, and effectively developed the largest tight gas field in China, The first national shale oil demonstration base has been built, and a number of development and construction indicators have reached the world's leading level.
[narration] it is understood that the effective development of unconventional oil in the Mesozoic Chang-7 source layer is expected to contribute 5 million tons of crude oil production each year by the end of the 14th five year plan. It is an important field for the stable production of crude oil in Changqing Oilfield in the long term in the future.