Geochemistry and possible origin of petroleum in Palaeozoic reservoirs from Halahatang Depression |
| |
| Affiliation: | 1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;2. College of Geological Science and Engineering, Shandong University of Science and Technology, Qingdao 266510, China;3. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;2. Colorado School of Mines, Golden, CO 80401, USA;3. Tarim Oilfield Research Institute of Exploration and Development, PetroChina, Xinjiang, Korla 841000, China;4. China University of Petroleum, Qingdao, Shandong 266580, China;1. PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China;2. Research Institute of Petroleum Exploration & Development, PetroChina Daqing Oilfield Company, Daqing 163712, China;3. China University of Petroleum, Beijing 102249, China;4. Sinopec Management Institute, Beijing 100012, China;1. Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, PR China;2. Key Lab of Exploration Technologies for Oil and Gas Resources of Ministry of Education, Yangtze University, Wuhan 430100, PR China;3. Liverpool University, Department of Earth and Ocean Sciences, Liverpool University, Liverpool, Merseyside L69 3GP, UK;4. Research Institute of Petroleum Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, PR China;1. Key Lab of Petroleum Geochemistry, CNPC, Beijing 100083, China;2. State Key Lab for Enhancing Oil Recovery, Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China;3. Department of Geoscience, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada;4. School of Energy Resource, China University of Geosciences, Beijing 100083, China;1. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing, 102249, China;2. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing, 100083, China |
| |
| Abstract: | The Halahatang Depression in the Tabei Uplift of the Tarim basin is an active exploration area because it has substantial reservoir potential and contains or is near to many commercial oil fields. Geochemical analysis indicates that Halahatang oils were derived from marine carbonate source rocks deposited under anoxic reducing conditions. The maturities for Halahatang oils are corresponding to the peak of the oil window and slightly higher than the neighboring Tahe oils. The Halahatang oils feature low Pr/Ph, C21/C23 tricyclic terpane and, C28/C29 sterane ratios, high C29/C30 hopane and C35/C34 hopane ratios, a “V” shape in the distribution of C27–C28–C29 steranes and light carbon isotope ratios, similar to the Tahe oils and correlate well with the Middle-Upper Ordovician source rock. However, some source-related biomarker parameters imply a more reducing source organofacies with more zooplanktonic contribution than that for the Tahe oils. |
| |
| Keywords: | Biomarker Molecular organofacies Maturity Oil-source correlation Ordovician Halahatang Depression |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
