05.07.2009

Core drilling involves use of a core barrel, attached at the bottom of a string of rods, which is rotated and advanced through soil or rock to obtain a core sample of the material. Water or drill fluid is used to cool the cutting bit and to carry cuttings to the surface. There are two types of core drilling: conventional and wire line. To retrieve a core cut with a conventional core barrel, the entire string of drill rods must be removed from the hole. The wire line core barrel has an inner barrel which holds the core that can be pulled up through the drill rods thereby eliminating the need to remove the entire string of drill rods

A core bit is usually a drag bit often fitted with diamond cutting structures and has a hole in the middle which allows the bit to drill around a central cylinder of rock, which is taken in through the bit and into the core barrel

Laboratory analysis of a core sample that may determine porosity, permeability, lithology, fluid content, angle of dip, geological age, and probable productivity of the formation.

A cylindrical sample of geological formation, usually reservoir rock, taken during or after drilling a well. Core samples are used for many studies, including the study of drilling fluids and the damage done to them. Although it is expensive and difficult to gather core, it provides valuable information (real porosity values, real permeability values, can be used for experiment test rock and fluid behavior, sedimentological analysis, structural analysis using fractures)

Coral services include: coordination of all vessels, floating cranes and barges in Israel; Assistance finding / chartering adequate vessels for offshore projects; Notification and coordination of works with the Israeli Ministry of Transport; Coordination of arrival with all other relevant authorities; Daily coordination of works with  the various authorities; On line assistance to all vessels, barges and floating cranes throughout the project regarding work in port area; Arrangement of navigational procedures with Haifa radio station; Coordinating of emergency medical evacuation procedure. Other services include: Consulting on setup in Israel; Consulting and assistance in obtaining relevant agreements with the custom and immigration authorities; Supervision of all transhipments arriving in Israel; Consulting on the delicate relations with port management and stevedore unions; Assistance with accommodation for work team; Handling of all incoming / outgoing crew; Providing custom clearance services; Coordination of custom clearance of all equipment / spares arriving for the project; Arrangement of regular supplies, such as fresh food for the crew and other supplies; Ordering, purchase and supply of technical equipment. This includes obtaining various quotes and selecting best offer; Coordination of repairs/ maintenance for the equipment at local workshops/ shipyard; Ordering, purchase and supply of bunkers and fresh water for the vessels; Supply of mobile phones / faxes to vessels and relevant personnel in order to enable close coordination between all parties

A structure created to air-cool hot water which has been condensed from steam used in a steam turbine generator. The water used in energy generation must be returned to a temperature relatively close to its original temperature before it can be returned to the environment. Cooling towers are often the largest visible structures of combustion turbine and nuclear generating facilities. The increasing popularity of cogeneration systems may result in substantially fewer and smaller cooling towers being constructed in the future