Nanocarbon-based enhanced squeeze treatment for improved scale management

International Conference on Process Engineering and Advanced Materials 2018

Muhsan, A.^1 ; Ishtiaq, U.^1 ; Rozali, A.^1 ; Mohamed, N.^2 ; Albarody, T.^3

Petroleum Engineering Department, Universiti Teknologi PETRONAS, Malaysia^1

Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, Malaysia^2

Mechanical Engineering Department, Universiti Teknologi PETRONAS, Malaysia^3

关键词: Active surface area;    Coreflood experiments;    High pressure high temperature;    Near-wellbore region;    Oil and Gas Industry;    Organosilanes;    Scale inhibitor;    Squeeze treatments;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/458/1/012044/pdf
DOI  :  10.1088/1757-899X/458/1/012044

来源: IOP

【 摘 要 】

Oil and gas industry is facing dilemma regarding scale management particularly for offshore production activities in ultra-deep waters under high pressure-high temperature (HPHT) conditions. Scale inhibition squeeze treatment widely employed technique for scale control. However, at HPHT conditions, routine conventional chemistries for scale mitigation are ineffective and unviable. This paper presents promising advantages of employing nanotechnology to enhance conventional scale squeeze treatment. Experimental studies were carried out to examine the potential benefits of using Graphene Oxide (GO) and Carbon nanotubes to increase the adsorption and retention of ETDA scale inhibitor onto reservoir rock in a process coined as 'Nano-carbon Enhanced Squeeze treatment (NCEST)'. This process involves treating the reservoir rock in the near wellbore region with nanomaterials that rendered increased active surface area for scale inhibitor adsorption. Stronger bonding was witnessed between EDTA and reservoir rock which accounts for better retention of EDTA. Test analysis of coreflood experiments were conducted by the aid of FESEM, EDX and UV-visible. Application of the proposed NCEST model was observed to significantly increase adsorption of EDTA on rock core sample treated with GO to achieve maximum scale inhibitor adsorptive capacity of 180mg/g as compared to 51mg/g when treated without nanomaterial.