Abstract
A large portfolio of chemicals and products is needed to meet the wide range of performance requirements of the oil and gas industry. The oil and gas industry is under increased scrutiny from regulators, environmental groups, the public, and other stakeholders for use of their chemicals. In response, industry is increasingly incorporating “greener” products and practices but is struggling to define and quantify what exactly constitutes “green” in the absence of a universally accepted definition. We recently developed the Chemistry Scoring Index (CSI) which is ultimately intended to be a globally implementable tool that comprehensively scores and ranks hazards to human health, safety, and the environment for products used in oil and gas operations. CSI scores are assigned to products designed for the same use (e.g., surfactants, catalysts) on the basis of product composition as well as intrinsic hazard properties and data availability for each product component. As such, products with a lower CSI score within a product use group are considered to have a lower intrinsic hazard compared to other products within the same use group. The CSI provides a powerful tool to evaluate relative product hazards; to review and assess product portfolios; and to aid in the formulation of products.
Highlights
The oil and gas industry uses a wide variety of chemical products during the drilling, stimulation, and production of oil and gas wells
To address the lack of a suitable system for evaluating and comparing the potential HSE hazards of products used in the oil and gas industry, we developed the Chemistry Scoring Index (CSI)
A difference in CSI scores among products in a use group that is within one standard deviation of the average score for the use group is not considered significant, whereas a difference that is greater than one standard deviation of the average score for the use group is considered more meaningful
Summary
The oil and gas industry uses a wide variety of chemical products during the drilling, stimulation, and production of oil and gas wells These products are formulated with various chemicals (hereafter referred to as “components”) at variable concentrations to meet the performance requirements for a particular use or operation. Guiding principles of the OSPAR Convention, implemented through its Harmonized Mandatory Control System for the Use and Reduction of Discharge of Offshore Chemicals [2], include the principle of substitution with less hazardous or non-hazardous substances where such substances are available. While these OSPAR regulatory requirements incorporated environmental hazards as a consideration, hazards to human health and physical safety were not included. Regulatory safety assessments that take into account a more comprehensive view of hazard are increasingly required for market and/or specific use authorizations of chemicals and products, such as under the REACH regulation in the European
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