Application of Concepts To Improve Oil Production in Low-Permeability Turbidite Reservoirs in Mexico

摘要

Understanding the complexity of the reservoir is the first step for proper evaluation.By analyzing in an unconventional way using a comprehensive multidisciplinary team analysis and specialized tools to implement innovative completion techniques as the refracturing,multi-stage fracturing,and complex networks of fractures in horizontal wells will an operator have the best opportunity to achieve planned production. The economic development of low permeability turbidite reservoirs requires efficient application of new techniques and concepts on completion methods and hydraulic fracturing with a precisely planned spacing and well location program to adequately improve the oil production. However,it is necessary to perform analyses to determine the impact of induced fracture dimensions and orientation in order to maximize the production.The present work is a study performed to analyze some concepts which together could help to improve the production in this type of reservoir.Reservoir average data from a field in Mexico was used to build one simplified and one refined dynamic model. Fractures with different characteristics were built into the models and then simulations were performed and analyzed.This study shows how is the influence of induced fractures dimensions and the impact and benefits of induced fracturing can affect production and overall field development within a secondary recovery program.Additionally,a sensitivity to fracture orientation was simulated to illustrate the impact of knowing hydraulic fracture direction to best develop these tight reservoirs.During this study several scenarios were created and compared with the base case.The Technical and economical evaluation results show that the most profitable scenario is to develop the field with a high density of wells,producing with large induced hydraulic fractures and with water injection pressure support from the beginning of the development.