Identificação de problemas operacionais no sistema gas-lift intermitente através do Sonolog: um estudo de caso

Abstract

Artificial lift methods are used by the oil industry as a tool to produce wells in which reservoir pressure is not sufficient to raise fluids to the surface. Among the most used methods, the intermittent gas-lift (GLI) stands out, which consists of injecting natural gas at high pressure into the production column, in determined time cycles, to displace the hydrocarbons through slugs. To ensure that the method is working optimally, tools available on the market are used, such as Sonolog, which determines the level of liquid contained in the production column and annular space through sound pulses, generating data that will be processed with the aid TAM Software, Echometer and Sonolog hardware. This work aims to use Sonolog technology to develop a study to identify operational problems in a GLI well, in a mature onshore field in the state of Alagoas, in order to identify whether the system is operating adequately to guarantee production.