Regresar

Technical - economic feasibility analysis of the conversion of a producing well to rubble reinjection well in the ESPOL field

Abstract:

In the drilling and reconditioning operations of wells, a large volume of residual waste is produced and must be treated to comply with current environmental regulations. Most of the waste released by these operations is classified as dangerous, due to its high content of corrosive, reactive, toxic, flammable, infectious and / or radioactive substances. For this reason it requires special methods for its treatment such as the use of disposal pools or the use of environmental managers. These methods correctly treat the waste, however, they present complications such as the extensive locations that have these problems for installation or the need for large access roads to be executed. The objective of this study is to describe a methodology for the correct management of waste (rubble) treated by oil drilling through an existing well to treat the waste that will be generated with the new drilling campaign planned for the year 2020. In this project, a review of the reinjection operations already carried out in the ESPOL D2 and D6 wells will be carried out, which served to establish the most important parameters to analyze in a reinjection well and that will be the basis for the conversion proposal from ESPOL B59 and E68 wells from producers to re-injectors of rubble. The study determined how feasible the conversion of wells 59 and 68 from producers to gravel reinjectors was, based on their petrophysical parameters, obtaining a profitability of 119% for the entire project analyzed, the treatment of waste from 38 drilled wells.