... risk mitigation measures. risk and uncertainty assessment spill risk assessment index toxicity substance evaluation offshore vessel risk management chemical mapping magnitude risk matrix consequence quantity index society chemical spill quantity information petroleum engineer...

... with lower or no AF. This study was designed to characterize toxicity and calculate risk of PW discharges from platforms in different world areas using various marine species and different calculation methods. Five acute or pseudo chronic toxicity tests (bacteria, microalgae, crustacean, oyster, and sea...

... can be considered adequately controlled. water management regulatory approach produced water discharge upstream oil & gas risk management concentration assessment objective toxicity threshold reduction adverse effect uncertainty implicit approach guidance rba safety factor...

... consists on using microorganisms in biofilm in order to remove the toxicity of produced water, at low cost with a low footprint for offshore sites. For a long time, the concentration of oil-in-water was the unique specification for water disposal into the sea. With a new European regulation and worldwide...

... Abstract Drilling fluids contain multiple components that can interact in complex ways to affect overall toxicity; the nature of these interactions is not presently well-understood. A response-surface methodology (RSM) is an empirical technique that is suited to modeling such effects using...

... www.petroleumhpv.org . Upstream Oil & Gas Hydrogen Sulfide complex reservoir gasoline condensate reservoir challenge program extraction information Downstream Oil & Gas category hpv challenge program petroleum hpv testing group petroleum substance hazard natural gas substance toxicity...

... of three valid toxicity values from tbioassys was set. The HC5 is in our case expressed as a percentage PW or a dilution factor of the PW. The calculated HC5 values in this practical program are based on acute toxicity tests. In order to derive a comparable HC5 for chronic values, an Acute to Chronic Ratio...

... slurry toxicity hydraulic fracturing acid fracturing fluid proppant Introduction Efforts to control and reduce the environmental impact of offshore oil and gas have resulted in several regulations, ranging from specific country legislation to multilateral agreements. In 1982, UNCLOS (United...

... will review, discuss and assess the risks that human and environment face as this new science develops at a high rate. health & medicine exposure assessment toxicity workplace concentration safety adverse effect sampler efficiency exposure risk information nanoparticle upstream oil...

... in produced water include organic acids, polycyclic aromatic hydrocarbons (PAHs), phenols, and volatiles which could have migrated in to soils of holding pits ( John A.V 2004 ). These hydrocarbons are likely contributors to produced water toxicity, and their toxicities are additive, so that although...

... of the discharge (rate, toxicity, etc.) and the receiving environment relative to a broad framework for regulatory acceptance (e.g., within an operating permit, environmental impact assessment process, etc.). Finally, the authority to discharge does not typically rest with the oilfield service company itself...

... Abstract During in situ oil bioremediation, only a portion of the oil is actually consumed by the bacteria. The oil and a highly distilled and altered oil residue remain in the environment. The residue is generally considered more acutely toxic than fresh oil due to the loss of water soluble...

... and mitigating the environmental impacts of hydrotest water disposal. The first stage was the selection of a hydrotest chemical package. Candidate chemicals were subjected (individually and in mixture at the appropriate dose levels) to toxicity tests developed specifically for the Caspian, and the least toxic...

...) Access to the affected chemicals in order to ensure an uninterrupted business. Artificial Intelligence HSSE standard chemical spill classification cepa 1999 assessment downstream user inventory substance Upstream Oil & Gas chemical substance toxicity information management...

... of drilling, toxicity, biodegradation, and oceanographic data to assess whether a given drilling project has the potential to have an ecological impact. If this evaluation indicates a potential for impacts, steps must be taken to further understand the potential for impacts and, if necessary, mitigate them...

.... The evolution of the composition of the pollutants was assessed through the 15 months of the experiment and completed with toxicity measurements on both leachates (Microtox®) and soil (plant germination and growth tests). Results showed that the total contaminant concentration was decreased by 72%. The main...

... that correspond to the deepest sample of each studied location do not exhibit the capacity to generate hydrocarbon leaches. Bacterial activity degrades hydrocarbon materials inside former pits. Relative toxicity of surface samples is higher than that of sub-surface samples. This should imply...

..., a study of the benthic meiofauna (0.1 to 1mm size). Experiments conducted demonstrated: very low concentrations of hydrocarbons stemming out from the cuttings, a very low toxicity of sediment, no benthic macrofauna community alteration, no change in the communities of actual and fossil...

... – Purification of produced water – Development and field testing of new low-toxic inhibitors The output of this project enables Statoil to start implementation of an environmentally friendly solution within 2006 at the Statfjord field. The first step will be to perform a full scale pilot test at one...

.... This residual was nontoxic to plants, earthworms, springtails and Microtox™ bacteria based on both acute and chronic toxicity bioassays. Earthworm growth and reproduction after 2 months exposure to soil with remediated LAO cuttings were greater than in the untreated soil. In the field, LAO cuttings were spread...