Polymeric drilling fluids emulsions (PDFE) are very important because they are used as drilling fluid systems used in modern drilling operations. For low pressure and exhausted gas and oil reservoirs Oil-in-water (o/w) emulsion polymeric drilling fluids are used however for drilling completion and work over high pressure gauge wells Water-in-oil (w/o) invert emulsion polymeric drilling fluids are preferable. The stability of polymeric drilling fluids emulsions systems are possible as a result suitable chemical components called surfactants which creates good emulsion stability. The rheological and filtration properties are controlled by polymeric materials and bridging agents. This paper is a review on the recent developments and trends as new technologies emerge in polymeric drilling fluids emulsion and their level of efficiencies in drilling gas and oil wells. At times the mud components serve as soil supplement or agricultural aid. A lot of work needs to be done to popularise both drilling and waste problems. Some programmes have already been adopted to bring together economic and environmental considerations in drilling practices. A lot has been done in exploring waste reducing technologies. Pre-treatment of emulsion muds before disposal is easier and lower in cost than oil based muds. Oils can be removed from the cuttings with the help of mechanical cuttings dryers and thermal desorption units. As per a recent developed technique, oil from drilled cuttings can be recovered by liquefied gas extraction technique. This paper touches not only on the progress made in drilling fluid technology but also on the environmental impact of the drilling fluids at the drilling sites.
Ibe Kevin Ejiogu,
Jude Anikimi Omgbu,
Femi Boma Julius,
Polymer Drilling Fluids Emulsions (PDFE): A Review, American Journal of Applied and Industrial Chemistry.
Vol. 4, No. 1,
2020, pp. 1-7.
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