ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
ABSTRACT Submarine cables and pipelines placed on the ocean floor must operate reliably for periods of up to 30 years. To ensure such reliability, cables and pipelines must be protected against both natural phenomena as well as human activity. As part of the Department of Energy Ocean Thermal Energy ...
ABSTRACT Southwest Research Institute is presently managing a relatively large program in offshore ecology for the Bureau of Land Management (BLM), Department of the Interior. The study involves university and private subcontractors representing several scientific disciplines. Project objectives .are ...
Abstract The oil industry is spending millions of dollars annually to develop and utilize improved technology to maximize safety and protect the environment in offshore operations. Considerable publicity has been given to these efforts in the areas of petroleum production and transportation. Environmental ...
ABSTRACT This paper is concerned with the recent development of a technique to simultaneously lay and bury flexible pipelines and control lines. The development of this technique using a fully dynamically positioned laying vessel is followed through from concept to pre-operational trials and finally ...
ABSTRACT This paper provides a brief historic look at downhole video in the petroleum industry, including early tool designs, configurations, and uses. Evolving technological improvements are addressed, including fiber optic telemetry. Advantages of recent innovations are covered. A review of the varied ...
ABSTRACT The results of a multi-million dollar environmental research program consisting of thirty-three wildlife, biological, oceanographic meteorological, sea ice, and oil clean-up studies related to the southern Beaufort Sea are presented. The studies were designed to provide ecological baselines, ...
ABSTRACT Biological and water quality changes in the Gulf of Mexico off the central Louisiana coast have been examined during a seasonal period of stratification and oxygen depletion in the water column. Probable causes, observed effects, and potential impacts on the timing of ocean discharges and ...
ABSTRACT A deeply towed system for fine scale deep ocean surveys has been assembled by the Marine Physical Laboratory over the last 15 years. It consists of precision echo sounder, sub-bottom penetration sounder, side-looking sonar, cameras, TV, magnetometer and a variety of other specialized measurement ...
Abstract Introduction With the shortage of 2D and 3D seismic vessels, rather than build a new vessel some companies are converting suitable candidate vessels into seismic vessels. Building new vessels is expensive and presents difficulty in finding a yard with vacant spots for the build and the necessary ...
ABSTRACT The fate of drill cuttings from offshore wells, and their effect on the marine environment, have been studied by means of sidescan sonar, scuba and underwater photography. Adverse effects are minimal and short-lived, and in some instances the accumulation of cuttings may be beneficial. Modification ...
ABSTRACT This paper describes a new parallel wire cable named ""New-PPWS,"" developed for deepwater mooring lines. New-PPWS has a slightly twisted parallel wire construction with double-layered polyethylene and laminated lead tape for water tightness. To confirm the reliability of the cable in seawater ...
Abstract During December 2003 - January 2004 a sea bed logging acquisition was conducted across the North Sea Troll Field. Different EM wave forms and frequencies were tested to optimize the hydrocarbon response from this shallow water gas and oil field. The survey consists of 41 receivers, deployed ...
ABSTRACT It is now essential to survey the sea-bed in great detail, to gather precise information at an exact location in order to minimize damage to large structures when working in great water depths. The only sure way to achieve this at present is with a manned submersible, but the next major advance ...
ABSTRACT This paper describes the establishment of a stable pilot-plant ecosystem and the utilization of that system in determining some of the chronic effects of oil pollution on the aquatic environment of the Gulf Coast area. Impacts on microorganisms, phytoplankton, zooplankton, marsh grass, shrimp, ...
ABSTRACT A variety of cables were studied under controlled conditions in the ocean. Sections of cable, 76.5 ft in length, were exposed to a spatially uniform, time-varying current. Vibration response, Current velocity, and tension were simultaneously recorded. Care was taken to minimize complicating ...
ABSTRACT The prospect of an ocean mining operation discharging processing wastes into the deep North Pacific Ocean raises several important environmental concerns. Mineral processing reject material frequently evokes the image of toxic metals and destroyed eco-systems, and the North Pacific is usually ...
ABSTRACT Six exploratory oil well drill sites were examined with a two-person submersible in water depths ranging from 21 to 149 m (70 to 490 ft). Time since wells were drilled ranged from 15 months to 17 years. The area of visually detectable cuttings around recently drilled wells in depths greater ...
Abstract Any mineral exploitation from sea water or from the floors of estuaries, bays, or the adjacent continental shelves will almost always involved a disturbance of the natural marine environment and an alteration of the marine ecology. Where these operations impinge upon man's other activities ...
ABSTRACT The results of a marine environmental monitoring program associated with drilling operations from a production platform near Baker Bank in the northwestern Gulf of Mexico are described. The study represents the first environmental monitoring program conducted in the Gulf of Mexico for a production ...
ABSTRACT At the moment Finland is probably the only country in the world where the industry is strongly investing in underwater technology without national programs or government support. All activity is purely commercial. The range of products - partly only developed, partly also built and delivered ...