REFRACTURAMIENTO HIDRÁULICO: " UNA EXITOSA TÉCNICA DE ESTIMULACIÓN DE POZOS "

Abstract

Currently the high cost of Oil and Gas, has attracted interest from the oil industry in increase the productivity of their wells, for this has been necessary to study stimulation techniques that let to enhance the well productivity, such as chemical stimulation, hydraulic facturing, hydraulic re-fracturing and high energy gas fracturing. Although there are several techniques of stimulation, the aim of this paper is to show that the technique of Hydraulic Refracturing stimulation, is a succesful technique, if a good well is selected and it take into account basic analysis relating to current reserve estimate and analysis of the existing fracture. For this analysis it is shown the most common problems in hydraulic fracturing treatments, and the advantages and disadvantages of the orientation of the fractures in hydraulic Refracturing treatments. This article presents a guide to select of candidate´s wells for Hydraulic Refracturing, wich becomes a tool of mandatory use for a successful application of hydraulic Refracturing technique. Similarly it is shown three historical cases of Hydraulic Refracturing that were successful, with initial fracture reopening and fracture reorientation, so as a historial case of initial fracture that it was not successful. In the same way was analyzing a job of hydraulic Refracturing done at a well located in Southwestern Colombia. As result of the analysis done to the historical cases and the Colombian case can be conclude that, well candidate selection and analysis of the initial fracture are crucial to the success in jobs of Hydraulic Refracturing.

Keywords

• Orientations
• Candidate Well
• Reopening
• Re-orientation
• Case Study.