On this issue we are publishing three original papers that are related with exploration topics, such reverse time migration, Modeling in elastic media and geochemistry. Special focus in the present issue on environmental aspects is done. So, four papers related with soil remediation, with photocatalytic degradation of hydrocarbons, with oils spills in rivers and a remarkable study about on-road vehicle emission factors in Colombia conforms a block that aim to contribute to get a better understanding about the environmental burdens in the industry.
Respecting to Oil Production segment, this issue includes a methodology for calculating performance indexes for Enhanced Oil recovery by air injection, a combined artificial intelligence modeling for forecasting and also an assessment of surfactant-polymer formulation for EOR. About integrity and materials topics, an evaluation of high density polyethylene as an alternative for corrosion control in pipes is also included.