my country's first proven shale oil field with over 1 billion tons

After more than two years of concentrated efforts, PetroChina’s Changqing Oilfield has achieved significant results in the Chang 7 petroleum exploration in the Ordos Basin.
The shale oil integrated large oil field with proven geological reserves of more than 1 billion tons has become China’s current largest page with proven reserves.
Rock oil big oil field
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All along, PetroChina has thoroughly implemented the spirit of a series of important instructions on vigorously improving domestic oil and gas exploration and development, and continued to increase technological innovation and key core technology research.

In the past three years, it has successively made major discoveries and breakthroughs in new shale oil and gas fields.
Sexual results

Among them, the shale oil exploration in the Ordos Basin has been reported frequently and is inspiring
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Changqing Oilfield made a major breakthrough in petroleum exploration in Qingcheng area in 2019, with proven shale oil reserves of 359 million tons, new proven reserves of 143 million tons in 2020, and 550 million tons of proven geological reserves in the first five months of this year.
After the final review of the National Oil and Gas Resources and Reserves Committee, it was put into storage

The surface of the Qingcheng shale oil field is covered by thick loess in the loess plateau, with ravines vertical and horizontal, and seismic exploration, drilling and fracturing are very difficult
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At present, the cumulative proven oil reserves are 1.
052 billion tons.

Since 2011, Changqing Oilfield has focused on large-scale oil and gas production, and has taken the lead in unconventional petroleum exploration geological theoretical innovation, forward-looking technical research and horizontal well development tests in the basin, and continued to deepen the tightness and accumulation mechanism of shale oil reservoirs.

Recognition of the enrichment law, research and establishment of the "Four Controls" enrichment model of the Chang 7 intra-source oil reservoir, and the establishment of the theory of source-reservoir symbiosis in the continental shale strata.

　　In accordance with PetroChina's "high-quality, high-tech, high-level, and high-speed" requirements for shale oil exploration and development, Changqing Oilfield has overcome the multi-disciplinary "sweet spot" optimization technology, horizontal well cluster layout, three-dimensional horizontal well optimized and fast drilling A series of key core technical problems such as well construction technology and long horizontal section subdivision cutting volume fracturing have created a miracle of economic and effective exploration and development of continental shale oil in the world under the background of low international oil prices
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Since 2018, 504 horizontal wells have been drilled and 277 horizontal wells have been put into production.
The average initial daily oil production exceeded 15 tons, the construction capacity was 1.