he Eastern S ag of Liaohe B asin Characteristics of t The Igneous Rock Lithology and Logging Curve

The eastern sag of liaohe basin is magmatic activity center of liaohe depression from Mesozoic to Cenozoic,igneous rock is widely development,the main lithology are trachyte, basalt, diabase and so on. Igneous rock lithology is related to the composition, structure, construction and causes of rock, many types of rock, hard to name and identification, is very important to petroleum exploration, and reservoir development by precisely distinguish igneous rock lithology and summarizes the logging response characteristics.It will well identify the igneous rock lithology and summarize the logging response characteristics by using the analysis of data of rock chips, combining with the intuitively display of the lithology in the crossplot. Different lithology is not the same as the response to the same logging project with conventional logging, basalt present in the characteristics of low GR, low RLLD, high DEN; trachyte has high GR characteristics, obviously different from the other lithology in this region; gabbro present high RLLD, high DEN, low CNL characteristics, GR relative to diabase and basalt increased significantly; diabase has low GR and high AC characteristics. KeywordsIgneous rock; Rock chips; Crossplot; Conventional log; Logging response characteristics