caa a22 4500 44530085X CHVBK 20180317142557.0 cr unu---uuuuu 170323e20100501xx s 000 0 eng 10.1007/s11430-010-0050-y doi (NATIONALLICENCE)springer-10.1007/s11430-010-0050-y Heat flow and its coalbed gas effects in the central-south area of the Huaibei coalfield, eastern China [Elektronische Daten] [JingQiang Tan, YiWen Ju, WenYong Zhang, QuanLin Hou, YongJie Tan] Based on an analysis of the present geo-temperature field and the thermal conductivity (K) of 62 samples from the central-south area of the Huaibei coalfield in eastern China, we calculated the heat flow and plotted its distribution map. The results show that the average heat flow in the research area is about 60 mW/m2. It is different from other major energy basins in the North China Plate, but has close relationship with the regional geology and the deep geological setting. The heat flow is comparatively higher in the southeastern, central, and northwestern areas than in the northeastern and southwestern areas. The geo-temperature distribution map of the bottom interface of the Permian coal measure was drawn by calculating its embedding depth and geo-temperature gradients. Finally, the present gas generation condition of the Permian coal measure is discussed by associating with the temperature condition, the vitrinite reflectance (R o), the metamorphism of coal and tectonic-burial evolution. The study indicates all present characters of the Permian coal measure, such as lower present temperature, higher R o value, middle-high rank coals, and uplift and extension events after the coal measure sediment, are favorable for the generation of secondary biogenic gas, but not thermogenic gas or primary biogenic gas. Science China Press and Springer-Verlag Berlin Heidelberg, 2010 present geo-temperature nationallicence thermal conductivity nationallicence heat flow nationallicence coalbed gas nationallicence resource effect nationallicence coal measure nationallicence Huaibei coalfield nationallicence Tan JingQiang College of Earth Science, Graduate University of Chinese Academy of Sciences, 100049, Beijing, China aut Ju YiWen College of Earth Science, Graduate University of Chinese Academy of Sciences, 100049, Beijing, China aut Zhang WenYong No.3 Exploration Party of Anhui Bureau of Coal Geology, 234000, Suzhou, China aut Hou QuanLin College of Earth Science, Graduate University of Chinese Academy of Sciences, 100049, Beijing, China aut Tan YongJie Development and Research Center, China Geological Survey, 100083, Beijing, China aut Science China Earth Sciences SP Science China Press 53/5(2010-05-01), 672-682 1674-7313 53:5<672 2010 53 11430 https://doi.org/10.1007/s11430-010-0050-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11430-010-0050-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tan JingQiang College of Earth Science, Graduate University of Chinese Academy of Sciences, 100049, Beijing, China aut NATIONALLICENCE 700 1- Ju YiWen College of Earth Science, Graduate University of Chinese Academy of Sciences, 100049, Beijing, China aut NATIONALLICENCE 700 1- Zhang WenYong No.3 Exploration Party of Anhui Bureau of Coal Geology, 234000, Suzhou, China aut NATIONALLICENCE 700 1- Hou QuanLin College of Earth Science, Graduate University of Chinese Academy of Sciences, 100049, Beijing, China aut NATIONALLICENCE 700 1- Tan YongJie Development and Research Center, China Geological Survey, 100083, Beijing, China aut NATIONALLICENCE 773 0- Science China Earth Sciences SP Science China Press 53/5(2010-05-01), 672-682 1674-7313 53:5<672 2010 53 11430 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer