Strategic Research Center for Oil and Gas Resources

Beijing, China

Strategic Research Center for Oil and Gas Resources

Beijing, China
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Zhou J.-B.,Jilin University | Zhou J.-B.,Chinese Academy of Geological Sciences | Wilde S.A.,Jilin University | Wilde S.A.,Curtin University Australia | And 6 more authors.
Tectonophysics | Year: 2011

The Xing'an Block is one of several fault-bounded crustal units in northern China located along the southeastern margin of the Central Asian Orogenic Belt (CAOB) and includes the Great Xing'an Range. The basement rocks constitute a khondalitic sequence of sillimanite- and garnet-bearing gneisses, hornblende-plagioclase gneiss and felsic paragneiss named the Xinghuadukou Complex. LA-ICP-MS zircon U-Pb dating of a sillimanite gneiss from Hanjiayuan indicates high-grade metamorphism occurred at 496 ± 3. Ma, with several older detrital zircon grains with ages extending from 678 ± 8 to 1373 ± 17. Ma. A sample of hornblende-plagioclase gneiss from the northern part of the Xinghuadukou Complex yields a metamorphic age of 496 ± 7. Ma, whereas igneous zircon core ages range from 601 ± 15 to 1637 ± 23. Ma. Another sample of hornblende-plagioclase gneiss from farther south in the Xinghuadukou Complex yields a metamorphic age of 495 ± 5. Ma, and magmatic core ages of 546 ± 4. Ma. These data indicate that high-grade metamorphism occurred at ~. 500. Ma and that several earlier magmatic events are recorded in the area, including some in the Neoproterozoic. These new age data, together with other recent data obtained from the Erguna, Songliao, Jiamusi and Khanka blocks, establish a > 1300. km Pan-African khondalite belt along the southern margin of the CAOB. © 2011 Elsevier B.V.


Zhou J.-B.,Jilin University | Wilde S.A.,Jilin University | Wilde S.A.,Curtin University Australia | Zhang X.-Z.,Jilin University | And 2 more authors.
Tectonophysics | Year: 2011

The Erguna block is a crustal unit located along the eastern margin of the Central Asian Orogenic Belt (CAOB) in the far north of China. It contains a variety of khondalitic rocks that include sillimanite- and garnet-bearing gneiss, biotite-plagioclase gneiss and carbonate, in association with hornblende-plagioclase gneiss and a variety of granitic orthogneisses. These rocks are collectively referred to as the Mohe Complex and make up the basement rocks in this poorly exposed terrane. Four samples were analyzed for this study, including two samples of biotite-plagioclase gneiss, one sample of garnet-sillimanite gneiss, and a sample of hornblende-plagioclase gneiss. All samples provide evidence of metamorphism in the form of discrete zircon grains or metamorphic rims around detrital cores and they record remarkably consistent 206Pb/238U ages between 495±2Ma and 497±6Ma. Detrital zircon cores with oscillatory zoning from the two biotite-plagioclase gneiss samples yield magmatic ages that range from 608±8Ma to 1015±12Ma, whereas those in the garnet-sillimanite gneiss range from 678±8 to 1373±17Ma. These results establish that a range of Meso- to Neoproterozoic magmatic rocks were present in the source area and contributed to the sedimentary protoliths. The youngest zircon core with an age of 608±8Ma limits the maximum possible age of deposition, indicating that the rocks of the Mohe Complex cannot be Late Archean to Early Proterozoic as previously considered. The ~500Ma age for the granulite facies metamorphic event in the Mohe Complex is identical to that recorded in the Mashan Complex of the Jiamusi block and the Hutou Complex of the Khanka block, >1000km to the south-southeast, implying that an extensive early Paleozoic khondalite belt extended across much of the eastern CAOB. Rocks of similar age and metamorphic grade have also been recorded from the Sayang-Baikal Orogen along the southern margin of the Siberia Craton, >1000km to the west. It is unclear at present whether these two belts are directly related but, whatever the relationship, it is evident that extensive tracts of khondalitic rocks were present in the eastern CAOB. They were subsequently affected by high-grade metamorphism in the Early Paleozoic, forming collisional accretionary terranes that were accreted during the Late Pan-African global event. © 2010 Elsevier B.V.


Yin C.-M.,Chinese Academy of Geological Sciences | Tian L.-Y.,Jilin University | Ren S.-M.,Strategic Research Center for Oil and Gas Resources | Ma Y.-S.,Chinese Academy of Geological Sciences
Geological Bulletin of China | Year: 2011

The north foreland of East Kunlun Mountains, located in south Qaidam Basin, has experienced dual events of the uplift of East Kunlun Mountains and the strike-slipping of the Altyn Tagh fault since Mesozoic and Cenozoic period. Controversy still exists concerning the regularity of oil and gas accumulation and storage. Based on the new interpretation of the seismic data and other data as well as studies of the structural characteristics, activity properties and epochs and the control of the main faults over oil and gas resources in the study area, the authors hold that the north edge fault of East Kunlun Mountains was related to the uplift of the Kunlun Mountains and the activity of Altyn Tagh fault. The early stage of Miocene and the last phase of Early Pleistocene were main faulting active stages. This fault not only controlled the formation of hydrocarbon depressions and oil and gas resources but also changed the oil accumulation and formed secondary oil pools. Therefore, it is likely to find the same type oil and gas reservoirs in the Qaidam Basin through the study of the evolution of East Kunlun Mountain fault.


Li S.,China University of Geosciences | Li S.,Strategic Research Center for Oil and Gas Resources | Qiao D.,Strategic Research Center for Oil and Gas Resources
Advanced Materials Research | Year: 2012

Unconventional natural gas because of a huge amount of resources has been received extensive attention in the world. Based on the present technology in China, tight sand gas as one type of unconventional gas, has become the most realistic energy resources, and has reached a certain development scale. Low porosity and permeability of tight sand gas reservoirs are widely distributed in China's major basins, the proved reserves of tight sand gas reservoirs in the proportion of reserves increases significantly year by year. Tight sand gas exploration in unconventional natural gas is most realistic, the concept of tight sand gas, reservoir characteristics, formation mechanism of unconventional tight sand gas, distribution in China are reviewed in the essay, exploration direction and some suggestions are pointed out at the end. © (2012) Trans Tech Publications, Switzerland.


Li S.-Z.,China University of Geosciences | Li S.-Z.,Strategic Research Center for Oil and Gas Resources | Qiao D.-W.,Strategic Research Center for Oil and Gas Resources | Feng Z.-G.,Strategic Research Center for Oil and Gas Resources | And 3 more authors.
Geological Bulletin of China | Year: 2010

Shale gas is a potentially huge amount of unconventional gas resources, with high exaction requirement, long development life and stable production cycle. In recent years, with severe energy shortage situation and energy prices, increasing shale gas has received more attention worldwide. The history of shale gas exploration and development, current production situation in America are reviewed. The latest research of shale gas in the rest of the world, including Canada, Europe and China is also studied. According to the existing research, it is predicted that the marine shale in Southern China and lacustrine shale in Northern China basins have huge shale gas resource potential. Because shale gas is unconventional resource and the research is of great significance, it is suggested that research efforts should be enhanced; strategic survey and optimization should be carried out as soon as possible; the technology transfer, research and international cooperation should be strengthened; related policies should be enacted in advance. All these measures are in order to realize shale gas commercial development in China and to promote economic development rapidly.


Jin C.-S.,Strategic Research Center for Oil and Gas Resources | Qiao D.-W.,Strategic Research Center for Oil and Gas Resources | Lu Z.-Q.,Chinese Academy of Geological Sciences | Zhu Y.-H.,Chinese Academy of Geological Sciences | And 5 more authors.
Chinese Journal of Geophysics (Acta Geophysica Sinica) | Year: 2011

Based on gas composition and temperature measurements in the course of field drilling, the upper and lower depths of gas hydrate stability zone are calculated by modeling in the Muli permafrost, Qinghai, then the modeling results are compared with the drilling results. The modeling results show that the upper depth of gas hydrate stability zone is 148. 8-122. 7 m and the lower depth of gas hydrate stability zone is 324. 6-354. 8 m, with the thickness of gas hydrate stability zone of 175. 8-232. 2 m: the drilling results indicate that gas hydrate and its related indications occur at the interval of 133-396 m. These two types of results are comparable and thus are basically accordant, suggesting that the modeling can serve as a prediction of the upper and lower depths of gas hydrate stability zone. Gas composition, depth of permafrost, thermal gradients above and below the base of permafrost are sensitive factors affecting the upper and lower depths of gas hydrate stability zone in the Muli permafrost.


Zheng X.,China Earthquake Administration | Jiao W.,Nanjing University | Zhang C.,Strategic Research Center for Oil and Gas Resources | Wang L.,Nanjing University
Bulletin of the Seismological Society of America | Year: 2010

High-quality, short-period Rayleigh-wave group velocity tomography is conducted through ambient noise cross-correlation among 54 stations in the newly upgraded Xinjiang Provincial Digital Seismic Network in northwest China. The velocity maps obtained in this study give more details in most parts of Xinjiang than previous surface wave studies that mostly focused on large scale patterns in Eurasia, Asia, or the whole of China. The tomography results have a high correlation with the major tectonic and geological features in the study area. In general, low velocities are associated with the two basins, and high velocities are associated with the two mountain belts in the Xinjiang area. The southernmost part of the Tianshan mountains has the same velocity structure as that of the neighboring part of the Tarim Basin, implying that they may have the same crustal composition. The velocity in the Tarim Basin is spatially inhomogeneous, due to the fact that it comprises several sub-blocks that have different thickness of sediments and crustal layers. In the Dzungaria Basin, as the period becomes longer, the low-velocity zone shrinks toward the south, reflecting the fact that the sediments and the upper crust in the southern part of the Dzungaria Basin are thicker than in the northern part.


Zhou D.,University of Science and Technology of China | Xu L.,University of Science and Technology of China | Pan J.,Strategic Research Center for Oil and Gas Resources | Huang X.,University of Science and Technology of China
Natural Gas Industry | Year: 2012

The Yangtze massif is one of the areas in South China where oil and gas exploration started very early. Eight sets of black mud shales, including the Lower Cambrian, Upper Ordovician - Lower Silurian, Upper and Lower Permian, etc. were deposited on the Yangtze massif during the Paleozoic era. In recent years, a lot of basic studies have been carried out on the marine mud shales in the Lower Cambrian Qiongzhusi Fm and the Upper Ordovician - Lower Silurian Wufeng - Longmaxi Fms. In contrast, few studies have been conducted on the transitional shale in the Upper Permian Longtan Fm. In view of this, based on the previous research results and field geologic survey data, this paper analyzes the development characteristics of the Upper Permian Longtan Fm shale, and also discusses its prospect. The black shales in the Longtan Fm are featured by relatively high TOC, high thermal maturity, about 40% of the quartz content, thickness of 20-200 m, and strong adsorption capability, all being favorable conditions for shale gas accumulation and indicating a high shale gas potential there quite similar to the Lewis shale in the San Juan Basin (USA). However, its high clay content, strong heterogeneity, and strong later-stage tectonic modification have an adverse effect on shale gas enrichment. Vertically, the upper and middle members are more favorable for shale gas exploration than the lower member in the Longtan Fm, while horizontally the central and eastern Sichuan Basin and northwestern Chongqing in the Upper Yangtze as well as the southern Jiangsu in the Lower Yangtze are favorable for shale gas exploration.


Liu C.,China University of Petroleum - Beijing | Che C.,Strategic Research Center for Oil and Gas Resources | Zhu J.,Strategic Research Center for Oil and Gas Resources | Yang H.,Strategic Research Center for Oil and Gas Resources | And 2 more authors.
AAPG Bulletin | Year: 2012

This study compares the results of the petroleum resources of China evaluated in the U.S. Geological Survey World Petroleum Assessment 2000 (USGS WPA 2000) with those evaluated in the China National Petroleum Assessment 2007 (CNPA 2007). The USGS WPA 2000 reported the mean undiscovered petroleum resources of China to be 12.12 BBO and 85.79 TCFG, which is a much lower estimate than the 107.38 BBO and 692.13 TCFG assessment reported in the CNPA 2007. Six major factors, including petroleum resource classification systems, data sources, assessment scopes, unit divisions, assessment methods, and assessment parameters, contributed to the differences in these two assessments. Reserve growth and undiscovered resources are two independent parts of total petroleum resources according to the definition in the USGS WPA 2000, whereas undiscovered resources of the CNPA 2007 included estimates of reserve growth. The USGS WPA 2000 showed a much higher minimum field size than the CNPA 2007 did, and only six Chinese basins were covered in the former, whereas 115 Chinese basins were evaluated in the latter. For the same basins, unit divisions of the USGS WPA 2000 also differed from those of the CNPA 2007 because of their different data sources and exploration and exploitation experiences. Different methods used by these two agencies also affected their assessment results to some degree. Copyright © 2012. The American Association of Petroleum Geologists.


Zhu J.,Strategic Research Center for Oil and Gas Resources | Che C.,Strategic Research Center for Oil and Gas Resources | Yang H.,Strategic Research Center for Oil and Gas Resources | Liu C.,China University of Petroleum - Beijing
Oil and Gas Journal | Year: 2010

The China National Petroleum Assessment (2003-07) evaluated conventional oil and gas resources in 115 Chinese basins. In these basins, the total oil resources in place are 76.5 billion tons and the total recoverable resources are 21.2 billion tons. Oil resources are mainly distributed in five large basins. The annual oil production was predicted to exceed 200 million tons before 2015 and keep this level in the next 10 years. The total natural gas resources in place are 35 trillion cubic meters, and the total recoverable resources are 22 trillion cum. Gas resources are mainly distributed in three large basins. The annual natural gas production will exceed 170 billion cu m in 2020 and 230 billion cu m in 2030. By then, gas will have become second in importance in China after coal. This first of two articles sizes up conventional oil and gas resources in China. A second article will contain an assessment of unconventional oil and gas resources in China.

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