Monitoreo de deformación en áreas de interés petrolero mediante un sistema de procesamiento semi-automático.

EUILLADES, PABLO A.; EUILLADES, LEONARDO D.; SOLARTE, A.

Mendoza

Congreso; 11 Congeso de Exploración y Desarrollo de Hidrocarburos (CONEXPLO 2022); 2022

IAPG

This paper presents the results obtained using a semi-automatic surface deformation monitoring system applied in areas of petroleum interest. Surface deformation, either subsidence or uplift, is a phenomenon that frequently occurs in oil and gas reservoirs as a consequence of reservoir pressure changes, especially if it is relatively shallow. In Argentina, this phenomenon has been observed in numerous reservoirs, among whichwe can mention: Lomas del Cuy, El Guadal, Cañadón de la Escondida, Cerro Dragón (Gulf Basin), Loma Negra, Loma Campana, Desfiladero Bayo (Neuquén Basin), Barrancas or Piedras Coloradas (Cuyana Basin).In some cases, deformation is about 50 centimeters in a few months and is associated with the rupture of wells. In other words, subsidence and uplift phenomena constitute a signal to monitor, not only because they allow to anticipate damage to facilities, but also because it is possible to learn about the reservoir behavior through inversion methods to characterize, for example, permeability changes.On the other hand, continuous monitoring based on ground-based instruments such as differential GNSS or inclinometers is costly and provides only punctual results. The system presented in this paper uses Synthetic Aperture Radar images, acquired periodically by different Space Agencies and covering large areas. It allows detecting deformation phenomena when they are beginning to occur and it is possible to take preventivemeasures, as well as to study the dynamics and its eventual correlation with reservoir operating variables. The work is completed with the results of case studies in some of the reservoirs mentioned above.