ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
Abstract Produced water management calls for risk assessment and monitoring of the possible impact of discharges on the Environment. This paper presents the most recent developments of a large R&D programme aiming at assessing the real impact of sublethal doses of HC and other released chemicals on ...
Abstract This paper aims to up-date some of the misconceptions concerning the impact of shallow-water seismic operations. It will also provide an insight into the planning, organization and special technical features implemented for operations in an environmentally sensitive area and a number of key ...
Abstract Coiled Tubing Is used in over 1000 operations a year in the western half of the Prudhoe Bay Unit Fishing operations, well cleanouts inflatable packers end bridge plugs. cement squeezes, logging, N2 lifts and let pump operations are routinely performed year round Special considerations taken ...
Oil Contamination of Fish in the North Sea. Determination of Levels and Identification of Sources. Abstract Two fish species, cod and haddock have been sampled from five different regions in the Norwegian sector of the North Sea, the Haltenbanken and the Barents Sea. Three of the five sampling areas ...
Identifying sources of sampling variation and quantifying their magnitude is critical to the interpretation of ecological field data. Yet, most monitoring programs of reef fish populations based on underwater visual censuses (UVC) consider only a few of the factors that may influence fish counts, such ...
Abstract This paper discusses the prejob research and eventual use of a hydraulic workover (HWO)/snubbing unit for a subsea flowline intervention at the Nansen Spar in the Gulf of Mexico (GOM). Located in a water depth of 3,670 ft (1119 m), the Nansen Spar has been in production since 2002 (Fig. 1). ...
Abstract Stuck retrievable packers are most often fished out of the hole with a jarring string. Essentially, this is a hammer that is used to beat the packer out. The jarring operation proceeds until either the jars quit or the mandrel is jarred out of the packer. In either case, a milling assembly ...
Abstract We present results of monitoring studies on emergent coral reefs and submerged shoals, two potentially sensitive seabed habitats found within range of the modeled hydrocarbon plume from the 2009 Montara uncontrolled release in the Timor Sea. Divers conducted reef surveys 6 and 16 months ...
Abstract Coil Tubing technology grew as an off-shoot of the military needs during World War II. One such need was the requirement to spool continuous lengths of flexible pipeline across the English Channel, and the other post WWII need was to spool out long lengths of communication antenna from submerged ...
Abstract In the effort to reduce costs, many companies are investigating the cost effectiveness of completing some types of workover operations without removing the production tubing. These operations include scale removal, frac sand removal, squeeze-reperfing, underreaming and junk/fish removal. All ...
Abstract The fate of hydrocarbons (HC) in discharged produced water is complex. In risk assessment models such as DREAM, it is essential to focus on the critical fate processes and omit less important ones. To improve our discrimination capability, we examined the bioavailability of polyaromatic carbons ...
Abstract The oil production at the Frøy field in the North Sea (Norwegian Continental Shelf) ceased in 2001 and the platform was removed the year after. As a supplement to the regular sediment monitoring program, an extended assessment of the ""environmental condition"" at Frøy has been conducted ...
Abstract A subsea production well in the North Sea was being serviced with a riserless intervention which inadvertently resulted in fill atop a temporary bridge plug. Riserless slickline and traditional e-line attempts to remove the debris and pull the plug were unsuccessful. A rig or intervention ...
Abstract The long-term effects of discharged oily drill cuttings on native fish populations are of major concern. This study investigates the uptake of oil and synthetic liquid by the mud minnow, Fundulus grandis when exposed to three different concentrations of low-aromatic mineral oil-wet and synthetic ...
Abstract Traditionally, when wells in extreme environments required service, slickline, which had always been considered as the most cost-effective service option, was unable to provide the services because the available slickline tool options could not maintain integrity in the extreme well environments ...
Abstract Description: Typically, decommissioned platforms are safely removed and taken ashore for disposal per regulatory requirements. But an alternative for the Eugene Island 331A platform was for Shell to recycle and transform it into a valuable marine habitat as part of ""Rigs-to-Reef??. Application EI ...
Abstract This paper discusses a new, innovative tool, namely a hydraulic jar with a mechanical lock developed to run on wireline cable. The discussion addresses (1) the role and value of wireline jars in electric line operations, (2) technical features of the new wireline jar system with comments on ...
Abstract The many purposes and benefits of tubing pickling include iron control, scale removal, sludge prevention, removal of damaging pipe dope, asphaltene or paraffin deposit, elimination of spent acid, prevention of sulphur species deposition, improvement in stimulation and reduction in overall ...
Abstract During 1995 and 1996, AGIP participated in two projects in order to detect the effects of seismic prospecting, using airgun, in the Adriatic Sea and Po River ecosystems. As regards the Adriatic Sea, a shallow water basin with limited exchanges, high productivity and fishing resources heavily ...
Abstract In 1996, four offshore oil and gas platforms were removed from the Santa Barbara Channel off the coast of Santa Barbara, California. The four platforms, Heidi, Hope, Hazel, and Hilda, (collectively the 4H platforms) were installed between 1958 and 1965 and provided oil and gas production until ...