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Sensitive detecting position of C/O logging tool
WU Wen-sheng, XIAO Li-zhi
(State Key Laboratory of Petroleum Resource and Prospecting in China University of Petroleum, Beijing102249, China)
Abstract:
By using Monte Carlo simulation technique,the responses of different spacing detector to the lamina with different thickness, the responses of long or short spacing to the same lamina with different porosity and the responses of the tools with different diameter to the lamina were investigated. The calculated results show that the sensitive detecting position of C/0 toolis between source and detector, and the vertical distance between the center of detector and sensitive position is around 12cm. And the position doesn^ change with the characteristics of C/0 logging tool,borehole or formation.
Key words:  C/0 logging  sensitive position  lamina  Monte Carlo method