... Discharge calculation toxicity Simulation dilution EIF rye DREAM model pnec level Compound concentration Time variation tracer numerical model society of petroleum engineers Introduction The operators on the Norwegian Continental Shelf (NCS) have agreed with the Norwegian Authorities...

... in research and development chemistry. chemical spill classification us government chemistry global chemical evaluation process review chemical product chemical use and storage chemical evaluation process review category endpoint division 1 cepr aquatic toxicity substance regulation...

... of achieving lower toxicity and better intrinsic biodegradability. The study of the marine environmental impact associated with the discharge of OBM (oil base muds) drill cuttings has already given rise to numerous works and surveys related to the North Sea, but it is clear that knowledge is still limited...

... Abstract Drilling into a hydrogen-sulphide (H2S) rich formation presents risks that the highly toxic gas might be carried to the surface and released, thus creating a serious hazard. To mitigate this risk, it is standard practice to run the drilling mud at high pH and to include a sulphide...

... performance or increasing environmental risk. toxicity inhibition gulf drilling fluid chemistry inhibitor drilling performance drilling fluids and materials application accretion seawater drilling fluid formulation water-based mud invert mud performance hardness spe 84314 drilling fluid...

... fluids. The latter type are especially useful in high temperature, high pressure extended reach applications. In addition, the newer all-paraffinic fluids possess reduced toxicity and reasonable biodegradability characteristics. As such, they are excellent candidates for a variety of drilling...

... under real conditions the impact of cuttings, the capacity of regeneration of the ecosystem and the processes of recolonization. In a first phase, standardized (OSPAR) and experimental toxicity tests, aerobic and anaerobic degradation measurements and lixiviation tests were performed on various types...

... Limitation Guidelines, industry work groups, including EPA scientists and engineers, took on the specific tasks of identifying and modifying test protocols that would allow continued positive development of SBM technology. The resulting test protocols for biodegradation, toxicity and analytical chemistry...

... emulsifier sbm characterisation drilling fluid selection and formulation fatty acid water-in-oil emulsion hot rolling cacl 2 upstream oil & gas drilling fluid formulation toxicity drilling fluid property drilling fluid chemistry brine droplet emulsifier fluid loss control rock/fluid...

... supplier marine environment new millennium drilling fluid selection and formulation expert judgement production industry upstream oil & gas exploration spe 48946 society of petroleum engineers regulation toxicity regulator drilling fluid formulation fluid loss control chemical use...

... Abstract There has been much focus on possible acute toxicity of produced water and which natural components and chemicals contributes most to the toxicity. This paper describes a method for risk analyses of discharges to sea based on exposure dose instead of the more common method using...

... the site and setting clean-up goals include a lack of summarized toxicity data for the petroleum hydrocarbons and the absence of government agency-derived allowable exposure levels. The purpose of this work was to (1) review the toxicity literature pertaining to mineral spirits, crude oil, diesel fuel...

... disposal operation spe 26366 environmental regulation upstream petroleum industry regulation environmental impact american petroleum institute overview drilling fluid chemistry waste management toxicity exploration society of petroleum engineers drilling fluids and materials upstream oil...

... ABSTRACT Environmental problems, although nettfesome and often costly, have served to stimulate new developments in drilling fluid technologies. Minimizing environmental impact involves reducing levels of toxic components in drilling fluids, as well as waste minimization and recycling...

... corrosion inhibitors are toxic towards the marine organisms tested. New chemistries have been developed which display excellent corrosion inhibition properties and which are significantly less toxic. oilfield chemistry corrosion inhibitor haslegrave petroteurn engineer 1 production chemistry...

... ABSTRACT The EPA's discharge permit for the Gulf of Mexico caused shortages of shrimp, long turn around times and increased bioassay costs ($1000/test). The Microtox Toxicity Analyzer uses a luminescent marine bacteria to measure toxicity in hours for a fraction of the cost. Including % Oil...

... shrimp were most severely affected in any treatment followed by the sandworms. The hard clams were unaffected. Total percent survival for all three species and for the shrimp and worms only are presented in Table 7 . Cuttings exposed to diesel-based mud were clearly the most toxic with only a 37.5...