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| New explanation for shallow delta high resolution sequence stratigraphy of Putaohua oil bearing layer of member 1 of Yaojia formation of Cretaceous in Sanzhao sag |
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LIU Yuan1, ZHU Xiao min1, YUAN Hong qi2, ZHANG Si meng1, FANG Qing3, LIU Yun yan3, CAO Hai tao3, HUANG De li3
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(1. Faculty of Geosciences in China University of Petroleum, Beijing 102249, China;2. Faculty of Geosciences, Northeast Petroleum University, Daqing 163318, China;3. 8th Oil Production Plant, Daqing Oilfield Company Limited, Daqing 163514, China )
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| Abstract: |
| According to the data of seismic, well logging and cores, the research of shallow delta sequence stratigraphy of Putaohua oil bearing layer of member 1 of Yaojia formation of Cretaceous in Sanzhao sag was carried out, and a high resolution sequence stratigraphic framework was established. The results show that Putaohua oil bearing layer amounts to the rising hemicycle of the long term base level cycle, and folding one middle term base level cycle which could be classified into eight short term ones under the guidance of high resolution sequence stratigraphy theory. The formation thickness is becoming small from north to south, because every sublayer is up piching out bed by bed. Different correlation principles should be followed with interface (erosion surface), rock, interface (sedimentary discontinuity) along the source direction, and rock, interface cross the source direction. |
| Key words: Sanzhao sag Putaohua oil bearing layer of member 1 of Yaojia formation high resolution sequence stratigraphy Cretaceous |
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