Diseños especializados para cementar hoyos de calibre extendido en la cuenca oriente del Ecuador

Abstract

This project's main focus is the study for the implementation of new designs and specialized technologies to refurbish primary cementing, in the presence of holes extended caliber. Study that will determine the benefits and feasibility of using specialized cementing designs over conventional designs, in the event of widespread caliber hole. For this, as leading candidates there were taken two wells, which had caverns created due to the presence of washouts and shale detachment, with problems encountered in most of the wells in the East Watershed of Ecuador. Next, slurries were designed: expansive – elastic and foamed, which energized the fluid, allowing it to move and cover the whole complex geometry that make extended - bore holes. In addition, laboratory tests were performed at the slurries and the results were analyzed, and concluded that it has better coverage when well implemented the new designs of cement slurries, when there were used a conventional slurries. Finally, the simulation of the cement job was done, which ensured the successful implementation of good cementing practices, combined with new designs slurries and with these results we proceeded to the application of slurries in the selected wells.