Evaluation of the Suitability of Carboxylmethyl Cellulose (CMC) from Rice Husks/Saw Dust as Replacement for Conventional Hydroxy Ethyl Cellulose (HEC) as Additive for Cement Slurry Design
Othman Mohammed *
Department of Petroleum Engineering, Rivers State University, Nigeria.
Wopara Fidelis Onuoha
Department of Petroleum Engineering, Rivers State University, Nigeria.
Wami Emenike
Department of Petroleum Engineering, Rivers State University, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
This study will evaluate the suitability and effectiveness of using Cellulose derived from Rice husk and Saw dust as cement slurry additive to replace the conventional cellulose in order to minimize cost and optimize drilling. Rice husks and Saw dusts were processed and Carboxylmethyl Cellulose (CMC) extracted with Sodium Hydroxide, Ethanol and Sodium Monochloroacetate. Three cement slurry samples from the produced CMC (Rice husks and Saw dust) and the conventional HEC were formulated. Different mass percent concentration of 0.2, 0.4, 0.6,0.8 and 1 of the CMC from Rice husks, Saw dust and Conventional HEC were added and subjected to different temperature conditions of 200°F, 300°F, 400°F, 500°F, 600°F. Rheological Properties of the formulated cement slurry such as Yield point and Plastic viscosity were tested at those temperature conditions. Results show that the yield point for all the temperature conditions and the additive concentration for the CMC from Rice husks and Saw dust have the same trend with the conventional HEC. Also, the plastic viscosity of the CMC from the Rice husks and Saw dust were in agreement and same trend with the conventional HEC. The results reveals that cellulose prepared from Rice husks and Saw dust gave almost the same rheological properties with that of the convention HEC and can be used in place of conventional HEC to reduce cost and also achieve the same results.
Keywords: Cement slurry, hydroxy ethyl cellulose, carboxylmethyl cellulose, rice husks, saw dust.