Background: Intense competition in today's global markets, increasing customer expectations and rapid development of information technology, uncertainty of environmental conditions and environmental laws have led to shortened product life cycle, increased transportation capacity and dynamic behavior of customers in terms of selection and demand. An effective and efficient supply chain is a sustainable competitive advantage for organizations and can help them overcome turbulent and uncertain environments and intense competitive pressures. the proposed model in the traditional supply chain often do not include backflows and closed loops, and in fact do not follow the customer and product use levels, which are used to achieve recyclable products, use Again, they have shortcomings in the production cycle. Therefore, a green and sustainable chain supply chain is investigated to satisfy the impacts of environmental impacts, decrease of cost of economy and to consider the social dimensions related to employees of oil, gas and petrochemical industry due to the uncertainty of the parameters in this study.
Aim: the main purpose of this study is to meet the three dimensions of sustainability including reduction of economic cost, reduction of CO2 emissions and appropriate working days with optimal number of employees, at the firm level in the oil, gas and petrochemical industry according to the scenario definition of uncertainties.
Methodology: this study is based on uncertainty of parameters such as scenario -
based, which is defined by real world data for different values of parameters. since the purpose of this research is the development of applied knowledge in the oil, gas and petrochemical industry, it can be considered as an applied research in terms of research methodology. the method of data collection is descriptive. this research is considered as one of the quantitative researches in supply chain and time of data collection because it deals with the period of time. i