Browsing Norsk institutt for vannforskning by Subject "olje og gass"
Now showing items 1-15 of 15
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Biodegradation of Anco Green Novaplus Drilling Muds on Cuttings Deposited in Benthic Chambers
(NIVA-rapport;3475, Research report, 1996)Discharge of drilling fluids attached to bore hole cuttings may affect the benthic environment on the deposition sites in the North Sea. The effects may vary according to dose and properties of the base fluid and other ... -
Biodegradation of Esters and Olefins in Drilling Mud Deposited on Arctic soft-bottom communities in a low-temperature Mesocosm
(NIVA-rapport;3760, Research report, 1997)Discharge of chemicals from off-shore drilling operations represent a matter of concern for the oil industry and pollution control authorities world-wide. As the industry expands towards higher latitudes and greater depths, ... -
Biodegradation of Ultidril Base Fluid and Drilling Mud on Cuttings Deposited in Benthic Chambers
(NIVA-rapport;3321, Research report, 1995)Synthetic drilling fluids have replaced much of the mineral oil previously used in mud systems for offshore drilling operations The cmemicals are entered into the North Sea environment attached to bore hole cuttings, which ... -
Environmental Fate of Synthetic Drilling fluids from Off-shore Drilling Operations - An Experimental Study of an Olefin-, Ether- and Ester-Based Mud System on Cuttings Deposited in Benthic Chambers
(NIVA-rapport;3429, Research report, 1996)Synthetic drilling fluids have replaced much of the mineral oil previously used in mud systems for off-shore drilling operations. The chemicals are entered into the North Sea environment attached to bore hole cuttings, ... -
Environmental surveys of the Heidrun field
(NIVA-rapport;2848, Research report, 1993)The present survey is a re-investigation of the sea bottom sediments at six sites in the Heidrun oil and gas field, May 1992. Petroleum hydrocarbons and heavy metals were at background levels. Compared to the baseline ... -
Estudio de Impacto Ambiental de projecto VNRP. Preliminary Environmental Impact Assessment for a plant for the recovery of vanadium and nickel from Flexicoke (VNRP) at Refineria de Amuay, Venezuela
(NIVA-rapport;3270, Research report, 1995)This preliminary EIA is a preconseption of the Vanadium and Nickel Recovery Processes, which will eventually be realized to extract 7.2tV as vanadium pentoxide and 1.3t Ni as nickelsulfide per day from fly ash, produced ... -
Evaluation of Overall Marine Impact of the Novadril Mud Systems
(NIVA-rapport;3260, Research report, 1995)The recent increase of discharges of synthetic drilling fluids from offshore drilling operations have caused environmental concern with regard to possible effects on benthic ecosystems. The present report is a review of ... -
Foreløpig miljøkonsekvensvurdering for Vigdis-feltet, blokk 34/7
(NIVA-rapport;2850, Research report, 1993) -
Kombinerte effekter av kjølevann og oppdrett på marine bunnsamfunn. Et økosystemeksperiment
(NIVA-rapport;2743, Research report, 1992)Virkninger av kjølevann med 3°C overtemperatur ble undersøkt over to år i eksperimentelle hard- og bløtbunssamfunn i bassenger ved Marin Forskningsstasjon Solbergstrand. Samfunnene etterliknet forholdene på 10-15 m dyp. ... -
Sleipnerkondensat på Kårstø. Overvåking av det marine miljø - Hardbunnsamfunn
(NIVA-rapport;3585, Research report, 1996)Undersøkelse har gitt et godt bilde av hardbunnssamfunnene i Kårstøområdet etter at anlegget ble utvidet med en ny prosesslinje for Sleipnerkondensat. I undersøkelsen er benyttet rammeundersøkelser i fjæra, dykketransekt ... -
Strandsonen i Skagerrak. Modellanalyser for konsekvenser av oljeutslipp
(NIVA-rapport;2942A, Research report, 1993)Rapporten omhandler naturfaglige konsekvenser for fjærsonen på strekningen Lista - Svenskegrensen ved utslipp av olje fra mulige utvinningsområder i Skagerrak. Vurderingene er foretatt ved bruk av simuleringsprogrammet ... -
Strandsonen i Skagerrak. Organismer i fjæra og vurderinger av sårbarhet på organismesamfunn ved oljeforurensning
(NIVA-rapport;2829, Research report, 1992)Rapporten gir en oversikt over undersøkelser av alger og dyr i strandsonen på kyststrekningen fra Lista til svenskegrensen. Typiske organismesamfunn på fem biotoper på hardbunn er karakterisert: åpen kyst- eksponert åpen ... -
The effect of treated drill cuttings on benthic recruitment and community stucture-an experimental study on a natural seabed
(NIVA-rapport;2926, Research report, 1993)Environmental effects of treated cuttings were experimentally in situ. The cuttings orginated from drilling with a low toxicity oil based mud. The base oil and aromatic content in the orginal test materiale were 0-20% and ... -
Vurdering av risiko for dannelse av hydrogensulfid i sjøvann på Trollplatformen
(NIVA-rapport;3080, Research report, 1994)Nedbrytning av organisk materiale er antatt årsak til dannelse av H2S i bunnen av innestengt volum sjøvann i et av skaftene på Troll-feltet i Nordsjøen. Frigivelse av toksisk gass til luften representerer en helsefare under ... -
Zeepipe Ready For Operation Environmental monitoring of the discharge of inhibited sea water at Sleipner Jaunary-March 1993
(NIVA-rapport;2927, Research report, 1993)The Zeepipe Ready For Operation program involved the discharge of some 1.5 mill. m³ of sea water inhibited with Na-bisulphite and glutaraldehyde at Sleipner. The discharges which took place during January and March 1993, ...