Oil and Gas E&P
Oil and Gas E&P
In 2022, the newly added proved oil reserve was 202 million tonnes, the probable oil reserve was 262 million tonnes, and the possible reserve was 1.39 billion tonnes. The newly added proved natural gas reserve was 278.6 billion cubic meters, the probable reserve was 444.1 billion cubic meters, and the possible reserve was 808.5 billion cubic meters. The annual production of crude oil was 35.323 million tonnes, with an increase of 168,000 tonnes. The production of natural gas was 35.27 billion cubic meters, with an output of 1.39 billion cubic meters. The newly built crude oil production capacity was 3.144 million tonnes, up by 260,000 tonnes year-on-year. The natural gas production capacity was increased by 7.51 billion cubic meters (including coalbed methane), an increase of 680 million cubic meters.
Oil and gas exploration
We strengthened the integrated evaluation of oil and gas rich zones, comprehensively launched the “Deep Earth Project”, deepened the BrewChina Energy-CNPC cooperation, and achieved 7 major breakthroughs, 12 important breakthroughs, and 15 new commercial discoveries, exceeding the annual reserve task.
Regarding oil exploration, major breakthrough was made in the Shunbei ultra deep condensate oil and gas reservoir in Tarim Basin, with 20 one thousand-tonne wells drilled and 2 new 100 million-tonne oil and gas rich zones in operation. The construction of the Shengli-Jiyang Shale Oil National Demonstration Zone was efficiently pushed forward, and significant breakthroughs were made in new types of shale oil in the Jiyang Depression, with an additional “probable + possible” reserve of 1.15 billion tonnes. Major breakthroughs were made in the new strata in the shale oil new area of North Jiangsu Basin and ultra-deep oil in the middle of the Junggar Basin. New discoveries were made in the “new strata, new region, and new type” oil exploration in the east, with more achievements in the exploration of Fuxing shale oil on the rise.
With regards to natural gas exploration, major breakthroughs were made in the exploration of deep shale gas in the complex formation belt at the rim of Southeast Sichuan Basin. We’ve established the trillion-cubic-meter resource position, and added proved reserve of 145.9 billion cubic meters in the Qijiang shale gas field. Cambrian shale gas exploration in western Sichuan Basin took the lead in achieving a major breakthrough, with a resource of 387.8 billion cubic meters. Significant breakthroughs were made in exploring the central anticline zone in the West Lake Depression of the East China Sea, with a resource of 549.5 billion cubic meters. New breakthroughs were made in Sichuan, Ordos, and Songliao basins, and the exploration achievements of shale gas in Hongxing Permian expanded.
Oilfield development
We seized the opportunity of high oil prices, continued to enhance the efficiency of crude oil production, actively mitigated the impact of ecological redline areas (ERAs) withdrawal, Covid-19, and other adverse factors, drove the production capacity to the maximum, and produced 35.323 million tonnes of crude oil throughout the year, with an increase of 168,000 tonnes.
We strengthened the integration of geological engineering, intensified technology application to tackle key problems, and efficiently pushed forward key production and construction projects such as Shunbei, Tahe, offshore, hard-to-produce reserves, shale oil, etc. The annual newly-built capacity reached 3.144 million tonnes, an increase of 260,000 tonnes, hitting a new high since 2015.
We enhanced detailed reservoir characterization, deepened understanding of remaining oil, expanded the coverage of modeling and numerical modeling, increased basic investment in stable production, optimized the injection and production structure of water flooding reservoirs, strengthened the entire process thermal management of heavy oil reservoirs, raised the quality of water injection and gas injection in fractured and vuggy reservoirs, upscaled heterogeneous composite flooding, actively forged ahead with pilot tests of offshore binary flooding and high-temperature and high-salt-polymer flooding, and raised the oil field pressure by 0.3 percentage points, with a natural decline rate of 10.4%, down by 0.2 percentage points, maintaining a stable comprehensive water content.
Natural gas development
In conventional gas, we followed the principle of pursuing high yield and efficient development with few wells, testing plans and well location deployment in advance, and strengthening technological innovation and application, and made significant breakthroughs in the development of difficult to use reserves in the Xujiahe Formation in western Sichuan. The large-scale construction of new areas such as Shunbei No. 2 Zone and West Sichuan Gas Field accelerated, and the stable production of major gas fields such as Puguang, Yuanba, and Daniudi was further consolidated. New production capacity of 4.55 billion cubic meters was built in 2022, an increase of 1.12 billion cubic meters. Gas production was 24.96 billion cubic meters, with an increase of 1.46 billion cubic meters.
In shale gas, we comprehensively pushed forward the steoreoscopic development and adjustment of Fuling shale gas field, steadily carried forward the production capacity construction of Weirong, Nanchuan, Dongsheng, and Baima, proceeded with the deep shale gas development in north Yongchuan and Dingshan, Wulong Daozhen normal pressure shale gas field, Puguang Jurassic, Jingyan Qianwei Cambrian new formation shale gas evaluation and well cluster tests. In 2022, a new production capacity of 2.92 billion cubic meters was built, with a gas production capacity of 9.91 billion cubic meters.
In coal-bed methane, we continued to focus on adjusting and tapping the potential in the southern part of Yanchuan and rolling production. In 2022, we built a new production capacity of 46 million cubic meters and produced 400 million cubic meters of gas.
