Extracted Lignin from Rhizophora’s Black Liquor as Fluid Loss Control Additive in Water Based Drilling Mud

E-ISSN： 1662-9795|2018|775|74-80

ISSN： 1013-9826

Source： Key Engineering Materials, Vol.2018, Iss.775, 2018-09, pp. : 74-80

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Abstract

The ability of lignin from Rhizophora Apiculata’s black liquor to act as a fluid loss additive in water-based drilling at HTHP condition was investigated. The lignin biopolymer was extracted from the black liquor using acid precipitation technique using 20% by volume of sulphuric acid at temperature of 45°C and 60°C for pH 4, 6 and 8 respectively. The produced lignin was tested in water based drilling mud at temperature of 250°F, 300°F,350°F and 400°F . The optimum extraction parameters showed that the highest yield of lignin extraction of approximately 51.2% was obtained at pH 4 and extraction temperature of 45°C. It was also observed that the Rhizophora Apiculata’s lignin has remarkable rheological and filtration controlling properties at HTHP condition as compared to the commercial lignin additive.