Elastic and Electrical Properties Evaluation of Low Resistivity Pays in Malay Basin Clastics Reservoirs

4th International Conference on Geological, Geographical, Aerospace and Earth Science 2016

Lubis, Luluan Almanna^1,2 ; Ghosh, Deva P.^1,2 ; Hermana, Maman^2

Geosciences Department, Universiti Teknologi PETRONAS, Malaysia, Bandar Seri Iskandar, Tronoh, Perak Darul Ridzuan

32610, Malaysia^1

Centre of Excellence in Subsurface Seismic Imaging and Hydrocarbon Prediction, Universiti Teknologi PETRONAS, Malaysia^2

关键词: Elastic impedance;    Elastic parameters;    Elastic properties;    Feasibility analysis;    Forward modeling;    Low resistivity;    Low resistivity pay;    Resistivity logs;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/38/1/012004/pdf
DOI  :  10.1088/1755-1315/38/1/012004

来源: IOP

【 摘 要 】

The elastic and electrical properties of low resistivity pays clastics reservoirs in Malay Basin are strongly dependent on the complex nature of the clay content, either dispersed or laminated/layered. Estimating the hydrocarbon pore volume from conventional electrical log, i.e. resistivity log, is quite a challenge. The low elastic impedance contrast also found as one of the challenge thus create a problem to map the distribution of the low resistivity reservoirs. In this paper, we evaluate the electrical properties and elastic rock properties to discriminate the pay from the adjacent cap rock or shale. Forward modeling of well log responses including electrical properties are applied to analyze the nature of the possible pays on laminated reservoir rocks. In the implementation of rock properties analysis, several conventional elastic properties are comparatively analyzed for the sensitivity and feasibility analysis on each elastic parameters. Finally, we discussed the advantages of each elastic parameters in detail. In addition, cross-plots of elastic and electrical properties attributes help us in the clear separation of anomalous zone and lithologic properties of sand and shale facies over conventional elastic parameter crossplots attributes. The possible relationship on electrical and elastic properties are discussed for further studies.