Optimización de la cementación de una tubería de producción mediante el uso de una píldora de Silicato.

Abstract

Cementation of production pipeline was optimized using a silicate pill in order to improve the cement adhesion to the pipeline used in oil Wells in the Amazon Region. The variables corresponding to the cementation process were determinate, using laboratory tests were obtained to simulate the process, using all cementing fluids previously conditioned to down hole temperature, the equipment used were: balance, stove, batch and caliper gauge. The determined variables were weight and thickness of cement, on which optimization was based. Laboratory techniques have their scientific basis in the best cementation practices for the oil wells API (American Petroleum Institute) 10B-2. Using a concentration of 35% V/V of sodium silicate in water, 1 minute of residence time o pipeline plates in the pill, at 65oC, without the use of scavenger grout, gets a maximum adherence of 8,25g of weight and 6,14mm thickness cement, in contrast to a system without pill with 2,83g of weight and 1,57mm in thickness of bonding cement. It achieved to improve the adhesion cement to pipeline, reflected in the final cementation registers. This study recommended to use of silicate pill as a cementation fluids pumped previous to the washer, with properties already described.