科研之友
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摘要
The Mesozoic stratum of Hailar basin, a rock succession dominated by volcanic-sedimentary elastic rocks is focused for well logging interpretation in this paper. However, the detailed petrological classification and discription of the core rock do not match the recognizing accuracy of logging, and the thickness of detailed subdivision of the core rock is less than 0. 6 m, the minimum layering thickness of logging. The study suggests that some types of rocks are with certain logging responses respectively, being models of rock-logging in Hailar basin, such as andesite, ignimbrite, tuff, sedimentary tuff, tuffaceous sandstone, tuffaceous conglomerate and sedimentary rocks. Some types of rocks can be separated from the others in the crossplots. The crossplot of Th-AC may separate conglomerate from others at least, the crossplot of PE-RD may separate tuffaceous conglomerate and tuffaceous sandstone from others, and the crossplot of K-U may separate tuffaceous conglomerate, coarse sandstone and tuffaceous coarse sandstone each other. The logging rock classification can meet the requirement of logging interpretation, based on both the core rock and its logging response. The core rock layering has been done under the logging rock classification, and the coincidence beween them is more than 80%. Four curves of logging including GR, DEN, CNL and MSFL are used in litho-logging layering. The method of GDCM, a way of integreted litho-logging layering, is effective in the logging interpretation of volcanic-sedimentary elastic rocks in Hailar basin.
- 出版日期2011-2
- 单位吉林大学
