Estudio de los resultados de la aplicación de VACS (Vectored Annular Cleaning System) para la limpieza de arena en el fondo de un pozo productor de la arenisca M-1

Abstract

In the present work, describes the study of the results of application of VACS for the cleaning sand at the bottom of a selected well, sand from the M-1 sandstone, a poorly consolidated sand.

For which the sand production in consolidated and unconsolidated formations, the effects and causes of sand production in wells, the factors that cause the cleaning of the well and the sand cleaning methods were detailed. A well with high sand production was selected and where two tools were used for Cleaning the well Sand Bailer and VACS.

It details about the VACS tool which factors affect the tool and the design of the tool hydraulics to obtain the ideal nozzle diameter and number of nozzles and the optimum flow rate for the VACS tool. The analysis between the two tools: the assembly and disassembly time of the Sand Bailer cleaning BHA took less time, the use time of the VACS tool had a shorter time and with a shorter NPT time, more sand was recovered with VACS. With which a better performance and efficiency was obtained with the VACS tool than with the Sand Bailer tool, with which there is the feasible od using the VACS tool for future sand cleaning operations in the field.