Logging Evaluation of Carbonate Reservoirs Based on Reflected Waves
详细信息
- 责任者：Xiao Chengwen (Exploration and Development Research Institute ; Tarim Oilfield Company ; PetroChina ; Kurle 841000 ; China) ; Wang Guiqing
- 刊名：Natural Gas Industry
- 出版年：2013
- 卷期：33(6)
- 关键词：碳酸盐岩储集层 ; carbonate reservoirs ; 储层评价 ; reservoir evaluation ; 塔里木盆地 ; Tarim Basin
- 页码：p.29-33
- 图表：illus., 13 refs.
- 分类号：1003
- issnNo：ISSN1000-0976
- isbnNo：CN51-1179/TE
摘要
The logging evaluation of carbonate reservoirs is challenging due to their strong heterogeneity,significant anisotropy and well-developed fractures.A remote acoustic reflection imaging logging technique is developed by the Logging Company of CNPC Bohai Drilling Engineering Company Limited.It draws on the experiences of acquisition technologies of geophysical prospecting and realizes the measurement of reflected wave via the logging method.This paper briefly introduces the basic principles of remote acoustic reflection imaging logging,the features of the apparatus,and the basic information acquired.The analysis of the basic information by using the parameter estimation method reveals that the reflected wave and mode wave can be effectively separated,the noises can be eliminated,and the reflected waves can be further divided into downgoing and upgoing reflected waves.A simulation experiment is also designed for the typical geologic body and is used to determine the responses of the upgoing and downgoing reflected waves,so as to interpret the real logging data based on the experimental response characteristics and identify reservoir intervals invisible on conventional logs.The application in the carbonate reservoirs in the Tarim Basin indicates that the measuring depth is increased from 3 m to 10 m,thus to prevent oil/gas layers bypassing due to the limited measuring depth of conventional logging techniques.
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