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Ministry of Natural Resources: proven oil and gas reserves stopped falling and rebounded, and a new 100 million-ton oilfield was added last year

Ministry of Natural Resources: proven oil and gas reserves stopped falling and rebounded, and a new 100 million-ton oilfield was added last year

(Summary description) On July 15, the website of the Ministry of Natural Resources released the "National Oil and Gas Resources Exploration and Exploitation Report (2018)"

Ministry of Natural Resources: proven oil and gas reserves stopped falling and rebounded, and a new 100 million-ton oilfield was added last year

(Summary description) On July 15, the website of the Ministry of Natural Resources released the "National Oil and Gas Resources Exploration and Exploitation Report (2018)"

Information

  On July 15, the website of the Ministry of Natural Resources released the "National Oil and Gas Resources Exploration and Exploitation Report (2018)". The briefing shows that in 2018, the international oil price fluctuated in a wide range and the oil and gas industry recovered. The national oil and gas resources exploration and production investment continued to pick up, and the physical workload increased rapidly. Oil and gas exploration found a good momentum. The proved reserves of oil and gas stopped falling and rebounded, and a new 100 million-ton oilfield, three 100 billion cubic gas fields, and a 100 billion cubic shale gas field were newly added. Oil and gas production shows a trend of "oil stable gas rise", oil production remains basically stable, and natural gas production grows rapidly. Reform of the oil and gas exploration and production management system has been steadily advanced, and important progress has been made in oil and gas geological surveys.

 

  I. Oil and gas exploration and production investment continues to rise

 

  In 2018, the national oil and gas (including oil, natural gas, shale gas, coalbed methane and natural gas hydrate) exploration and exploitation investment were 63.658 billion yuan and 203.106 billion yuan, respectively, a year-on-year increase of 8.9% and 24.7%. , A year-on-year increase of 13.5%, 3D seismic 34,000 square kilometers, a year-on-year increase of 3.3%; 2955 exploration wells and 21,107 development wells completed, an increase of 8.4% and 2.0% year-on-year.

 

  Second, new oil and gas proved reserves stopped falling and rebounded

 

  In 2018, the newly-increased proved geological reserves of petroleum was 959 million tons, an increase of 9.4% year-on-year, and it achieved further growth after two consecutive years of decline. Among them, there are three newly-increased reserves with more than 100 million tons, namely the Ordos Basin, the Bohai Bay Basin (onshore) and the Junggar Basin. There is one new oil field with more than 100 million tons of proven reserves, which is Ordos Heshui Oilfield in the Basin.

 

  The newly added proven geological reserves of natural gas were 831.157 billion cubic meters, a year-on-year increase of 49.7%. Among them, there are two newly added basins with more than 100 billion cubic meters of proven reserves, namely the Ordos and Tarim basins. There are three new gas fields with more than 100 billion cubic meters of proven reserves, namely the Sulige gas field and the Mizhi gas field in the Ordos Basin, and the Kelasu gas field in the Tarim Basin.

 

  3. Steady increase in oil and gas production

 

  National oil production in 2018 was 189 million tons, a year-on-year decrease of 1.2%. Basins with an output of more than 10 million tons include the Bohai Bay (including sea areas), Songliao, Ordos, Junggar, Tarim, and Pearl River Mouth basins, totaling 176 million tons, accounting for 92.8% of the total national total.

 

  National natural gas production was 141.152 billion cubic meters, a year-on-year increase of 6.4%. Among them, Ordos, Sichuan, Tarim, Qaidam, Songliao, and Zhujiangkou basins account for more than 3 billion cubic meters of basins, totaling 126.346 billion cubic meters, accounting for 89.3% of the country's total.

 

  As of the end of 2018, there were 1,027 oil and gas fields (including 746 oil fields and 281 natural gas fields), 5 shale gas fields, 24 coal seam gas fields, and 3 carbon dioxide gas fields. Cumulative oil production was 6.952 billion tons and natural gas production was 2.07 trillion cubic meters.

 

  Significant progress has been made in oil and gas basic geological work

 

  A breakthrough was made in the investigation of natural gas hydrate resources in the new area of ​​the northern South China Sea, and preparations for the second trial production of natural gas hydrates in the Shenhu area of ​​the northern South China Sea were smoothly advanced. A major breakthrough was made in the investigation of the shale gas in the Yangtze River Economic Belt, and the Eyang Page 2HF well achieved a breakthrough in the Sinian Doushantuo Formation, expanding a new field of shale gas exploration and development. Important progress has been made in continental shale oil in the Songliao Basin. Significant progress has been made in oil and gas investigations in the new strata of the Piedmont Piedmont Belt in the Yin'er Basin, the Qaidam Basin, and the Junggar Basin. The coalbed methane industrial gas flow was obtained from Well Chuangaoshen 2 in Yibin area, southern Sichuan.

 

  During the "Thirteenth Five-Year Plan" period, the national oil and gas resources evaluation will be fully launched. Research on key evaluation parameters of tight oil and gas, shale gas, coalbed gas and other resources has been completed. The first economic evaluation of oil and gas resources, the ecological environment risk assessment of oil and gas resources, and the first evaluation of oil and gas resources for deep land

 

V. Many breakthroughs in conventional oil and gas exploration in new areas, new fields and new strata

 

  A major breakthrough was made in the risk exploration of Well Mid-Autumn 1 in the Qiulitag structural belt in the Tarim Basin. A 100-million cubic gas field was newly discovered, which provided a resource basis for the 30-million-ton large oil and gas field in Tarim. The Ordovician new oil reserves in the Shunbei area were estimated at 7176 10,000 tons, and the exploration results of the Shunbei fault zone are expanding westward to southward to deep layers. The evaluation of the Bozhong Sag in the Bohai Sea has implemented the largest packaged 100 billion cubic condensate gas field in eastern China, Bozhong 19-6, which provides strong support for the 30-million-ton stable production of Bohai Oilfield and a new step; the high-mature zone in the Bozhong Sag Successfully discovered a 100-ton-ton oil field—Bozhong 29-6, injecting power into the continued development of the old oil area; exploration and discovery of shale oil in the Cangdong Sag of the Bohai Bay Basin has shown a scale-up area of ​​50 million tons of shale oil. Industrial oil flow has been detected in the Lower Wuerhe Formation of Well Mahu 1 in the Junggar Basin, with an estimated additional oil reserve of 149 million tons; major exploration has been made in the exploration of the Upper Wuerhe Formation of the Permian in Shawan Sag, which is expected to form the Mahu-Sha Large oil and gas enrichment area in the Bay Sag. Well Yuanba 7 in the Yuanba area of ​​the Sichuan Basin first discovered a high-yield gas reservoir in the Permian Maokou Formation, with an estimated additional natural gas reserves of 152.7 billion cubic meters; in the western Sichuan area, the Permian system of the Yongtan 1 well detected a high-yield gas flow, opening up volcanic rocks Exploration of new areas. The Jilantai Oilfield was discovered in the Linhe Depression of the Hetao Basin, and the predicted additional oil reserves of 120 million tons have broken through the situation of over 40 years in the basin. The ultra-high-temperature and high-pressure natural gas with a gas layer of more than 100 meters was discovered in Ledong District of the Yinggehai Basin, with reserves of 100 billion cubic meters, which is expected to become a new position for increasing reserves and producing in the ultra-high-temperature and high-pressure field. The Lufeng Sag of the Pearl River Mouth Basin has discovered a fully assembled high-yield oil field, which is the largest commercial oil field for foreign cooperation in the past 10 years.

 

  6. Shale gas and coalbed methane exploration and development are progressing smoothly

 

  In 2018, China invested 13.53 billion yuan in shale gas exploration and development, completed 40 drilling wells and 285 development wells. The newly-proven geological reserves of shale gas were 124.678 billion cubic meters, a decrease of 66.2% from the previous year. The new reserves came from the Weirong shale gas field in the Sichuan Basin of Sinopec. National shale gas production was 10.881 billion cubic meters, an increase of 21.0% over the previous year. A major breakthrough was achieved in the exploration of shale gas at the Jinfo slope in the Nanchuan area in the east of the Sichuan Basin. The implementation of the geological resources of shale gas reached 196.5 billion cubic meters, laying a resource foundation for the third-phase construction of the Fuling Shale Gas Field.

 

In 2018, China invested 3.925 billion yuan in coalbed methane exploration and development, and drilled 152 wells and 779 development wells. The proved geological reserves of newly added coalbed methane were 14.708 billion cubic meters, a year-on-year increase of 40.3%, and the output of ground-developed coalbed methane was 5.15 billion cubic meters, a year-on-year increase of 9.5%.

 

  Progress in theory and technology of oil and gas exploration and production

 

  Advances in exploration theory and technology are an important guarantee for the continuous discovery of new discoveries in oil and gas exploration. Significant progress has been made in research on key technologies for continental shale oil exploration, effectively guiding and promoting exploration breakthroughs and large-scale production of terrestrial shale oil, such as the Jimusar in the Junggar Basin and the Cangdong Sag in the Bohai Bay Basin. The new generation of seismic technology featuring "single-point high density" implemented by the concealed oil and gas reservoirs effectively broadens the frequency band and improves the seismic resolution; the drilling acceleration technology has been applied in Shunbei Oilfield with significant effects; the key technologies for offshore mid-deep seismic exploration are It has been widely applied in the second three-dimensional seismic exploration of the sea area; the theoretical and technical guidance of deep large-scale integrated condensate gas fields in the Bohai Sea has discovered the largest integrated Bozhong 19-6 condensate gas field in eastern China.

 

  Innovation in extraction technology has promoted efficient development of oil and gas fields. Natural gas injection, gravity miscible flooding, enhanced oil recovery technology support leads the construction of 30 million tons of oil and gas fields in Tarim and enhanced oil recovery in old oilfields; industrial application of alkali-free binary composite flooding technology in Liaohe, Xinjiang and other oilfields, the recovery rate increased by 18 Above 3800 meters, the shallow shale gas fracturing technology is becoming more mature, and the low-cost fracturing technology test has achieved phase results; the key technology series for the development of large offshore high-temperature and high-pressure natural gas reservoirs in China has been successfully implemented in the Eastern Gas Field Group of the Yinggehai Basin; Progress has been made in the feasibility study of microfracturing and boosting waterflooding in water injection wells, and it has been implemented in Bohai Oilfield; multi-scale comprehensive reservoir prediction technology has improved tight gas reservoir reservoir encounter rates, with vertical wells reaching 90% and horizontal wells reaching 82 %.

 

  Exploration and Innovation of Oil and Gas Resource Management Reform

 

  Strengthen the management of examination and approval of oil and gas mining rights. In strict accordance with laws and regulations, proactively optimize services and strictly block exit. As of the end of December 2018, there were a total of 924 exploration rights for petroleum and natural gas (including coalbed methane and shale gas) in the country, with an area of ​​3.0946 million square kilometers; 774 mining rights, with an area of ​​164,900 square kilometers. Among them, 45 are foreign cooperation prospecting rights and 37 are mining rights.

 

  Implement the spirit of the CPC Central Committee and the State Council to deepen the reform of the oil and gas system, study and deepen the reform of oil and gas exploration and production management, liberalize the oil and gas exploration and production market, compete for the transfer of oil and gas exploration rights, and increase the withdrawal of oil and gas exploration blocks. We will continue to advance the pilot reform of oil and gas exploration and exploitation in Xinjiang, entrusting Xinjiang to competitively transfer 3 oil and gas exploration blocks. Summarize the construction experience of Chongqing Fuling Shale Gas Exploration and Development Demonstration Base, and continue to advance the construction of the Guizhou Qianbei Shale Gas Comprehensive Exploration and Test Zone and the Sichuan Sichuan South Shale Gas Exploration and Development Test Zone. Carry out the competitive transfer of oil and gas exploration rights in the sea area, and list the Shanxi CBM exploration block for sale. (From China Energy Network)

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