Evaluation of carbon dioxide storage potential for the Bohai Basin,north-east China |
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| Authors: | Ceri J Vincent Niels E Poulsen Zeng Rongshu Dai Shifeng Li Mingyuan Ding Guosheng |
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| Institution: | 1. Kingsley Dunham Centre, British Geological Survey, Keyworth, Nottingham NG12 5GG, UK;2. Geological Survey of Denmark and Greenland, Department of Geophysics, Oster Volgade 10, DK-1350 Copenhagen K, Denmark;3. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;4. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing 100083, China;5. Enhanced Oil Recovery Research Centre, China University of Petroleum Beijing, 18 Fuxue Road, Changping, Beijing 102249, China;6. Research Institute of Petroleum Exploration and Development, PetroChina Company, Ltd, Langfang, PO Box 44, Langfang, Hebei Province 065007, China;1. Key Lab of Submarine Geosciences and Prospecting Technique, Ministry of Education, Qingdao 266100, China;2. College of Marine Geosciences, Ocean University of China, Qingdao 266100, China;3. UCD School of Geological Sciences, University College Dublin, Belfield 4, Dublin, Ireland;1. Earth System Analysis, Potsdam Institute for Climate Impact Research, Potsdam, Germany;2. Institute of Physics and Astronomy, University of Potsdam, Potsdam, Germany;1. Key Laboratory of Petroleum Resources Research, Chinese Academy of Sciences, Beijing 100029, China;2. Shengli Oilfield Branch Company, China Petroleum & Chemical Corp., Dongying, Shandong 257000, China;3. Geology and Geophysics Program, Missouri University of Science and Technology, MO 65409, USA;4. PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China |
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| Abstract: | The storage potential of selected sites within the Bohai Basin was assessed for the COACH project. The Gangdong oilfield is considered to have a small potential storage capacity (23 Mt) and to be possibly suitable for an enhanced oil recovery or small-scale storage pilot rather than large-scale storage. The Shengli oilfield province is considered to have a great potential storage capacity (472 Mt in eight selected fields), however, these fields, like those of the Gangdong oilfield province, are compartmentalised by faulting and stratigraphy and likely to be quite challenging for injection. Unmineable coal seams in the Kailuan mining area were also considered for storage, the estimated capacity is 504 Gt adsorbed onto the coal and 38,100 Mt void storage capacity. However, the coals have low porosity and permeability, so they would be expected to have poor injectivity. This is also an active mining area and so any storage site would have to be chosen carefully to avoid affecting future energy resources. The Huimin sub-basin within the Jiyang Depression was identified for consideration as an aquifer storage site; the Guantao Formation has good porosity and permeability in this region, and the regional-level storage capacity of these areas was estimated to be 0.7 Gt. The aquifers in the Huimin sub-basin appear promising for storage, however, less data are available than for the oilfields and the sealing formations are not directly proven to trap buoyant fluids, though in adjacent oilfield in the Shengli oilfield province, the Minghuazhen Formation forms a regional seal for the Guantao Formation. |
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