Oil Based Drilling Fluid Waste: An Overview on Environmentally Persistent Pollutants

3rd International Conference on Structural Nano Composites

材料科学;化学

Siddique, Shohel^1 ; Kwoffie, Lorraine^1 ; Addae-Afoakwa, Kofi^1 ; Yates, Kyari^2 ; Njuguna, James^1

School of Engineering, Robert Gordon University, Riverside East, Garthdee Road, Aberdeen

AB10 7GJ, United Kingdom^1

School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen

AB10 7GJ, United Kingdom^2

关键词: Drilling operation;    Environmental pollutions;    Environmental standards;    Geological conditions;    Oil and Gas Industry;    Oil-based drilling fluid;    Sources of wastes;    Technological development;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/195/1/012008/pdf
DOI  :  10.1088/1757-899X/195/1/012008

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Operational discharges of spent drilling fluid, produced water, and accumulated drill cuttings from oil and gas industry are a continuous point source of environmental pollution. To meet the strict environmental standard for waste disposal, oil and gas industry is facing a numerous challenges in technological development to ensure a clean and safe environment. Oil and gas industry generates a large amount of spent drilling fluid, produced water, and drill cuttings, which are very different in every drilling operation in terms of composition and characterisation. This review article highlights the knowledge gap in identifying the different sources of waste streams in combined drilling waste. This paper also emphasises how different chemicals turn into environmentally significant pollutants after serving great performance in oil and gas drilling operations. For instance, oil based drilling fluid performs excellent in deeper drilling and drilling in the harsh geological conditions, but ended with (produces) a significant amount of persistent toxic pollutants in the environment. This review paper provides an overview on the basic concepts of drilling fluids and their functions, sources and characterisation of drilling wastes, and highlights some environmentally significant elements including different minerals present in drilling waste stream.