An Investigation on the Effect of Solvent and Heat to Clay Minerals in Shaly Sandstone

https://doi.org/10.22146/ijc.48010

Wan Zairani Wan Bakar(1*), Ismail Mohd Saaid(2), Mohd Riduan Ahmad(3), Husna Hayati Jarni(4), Siti Qurratu’ Aini Mahat(5)

(1) Oil and Gas Department, Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia; Department of Petroleum Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
(2) Department of Petroleum Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
(3) Onyx Engineering Sdn Bhd, Jl. Perusahaan 4, 68100 Batu Caves, Selangor, Malaysia
(4) Oil and Gas Department, Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
(5) Department of Petroleum Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
(*) Corresponding Author

Abstract


Core cleaning could be complicated for samples that contain a high amount of clays. Some clays are delicate and exposure to solvent and heat would damage or alter its properties. In this study, we investigated the effect of direct exposure of solvent and heat to clay mineral properties based on petrographical data from X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Field Emission Scanning Electron Microscope (FESEM) and Energy Dispersive X-Ray (EDX). Experiments were performed on sidewall core samples taken in a shaly sand zone. The FTIR data did not show any changes at the molecular level to the clay mineral after direct contact with the selected solvent. The FESEM images showed some illite floccules collapse in the samples exposed to oven-drying at 60 °C.


Keywords


clay minerals; core cleaning; petrography; solvent; heat exposure

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DOI: https://doi.org/10.22146/ijc.48010

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