Ships – Scows
Patent
1994-12-28
1996-04-09
Avila, Stephen
Ships
Scows
114 65R, B63B 3528
Patent
active
055051510
DESCRIPTION:
BRIEF SUMMARY
The invention concerns a device for the refinement or production of oil/petroleum products at sea on a factory or production ship. The invention is thereby also intended to include devices where refinement/production is conducted on a combination of land and sea-based installations. The expression ship is intended to cover any type of installation at sea.
In the extraction of oil or petroleum at sea, the production of oil products, i.e. the extraction of these from the oil-bearing strata, is normally conducted on board oil installations. In the production process gas is often included and until now it has been difficult to exploit this by means of those methods in use to date. In smaller oilfields and in test drillings, oil production vessels have also been used to some extent, in which the oil is brought up from the reservoir and placed in intermediate storage in the ship's tanks before being further transported by another ship to shore or to a further refinement site. Oil production ships of this kind have proved to be a rational solution for their special purposes but in reality constitute a relatively expensive solution, at any rate when it comes to the normal extraction of oil/petroleum products.
The concept of exploiting oil/petroleum products in or close to the extraction site has also been contemplated previously, by locating refining or factory equipment there, either on a platform or on a special ship for this purpose, which may be capable of producing electrical energy for bringing the oil ashore. Such ideas have been under consideration as a replacement for gas power stations in order to keep the pollution away from shore. However, no solution has been found to date as to how to implement this kind of production or further refinement of produced oil/petroleum products in an economically justifiable fashion, which would enable the operation to be conducted in a profitable manner.
The object of the invention is to provide a device which makes this kind of production and further refinement possible and which will allow oil/petroleum products to be produced and brought ashore in an economically justifiable way and/or perform the refinement and further conversion of the products into more valuable products, which can also be transported ashore or to a utilization site in a more rational manner.
These objects are achieved with a device which is characterized by the features in the patent claims presented.
The invention also concerns the employment of a lash-ship for the production and bringing ashore of carbon black and possibly hydrogen.
The term lash-ship refers to a ship of the type which is designed for the transport of a number of barges or smaller cargo vessels, which can be incorporated in the lash-ship in such a manner that the barges can be launched and act as separate ships. Such barges can be provided both over and under the ship's main deck, or they can be designed as releasable segments of a larger ship's hull. The barges can also be provided midships, thus giving the ship a catamaran-like design. Ships of this kind are known in a number of different designs.
This type of ship has been designed exclusively in order to facilitate and rationalize the transport of different types of goods, where the goods which have to be transported will be difficult to load on board larger ships, while at the same time the transport of the goods will be considerably simplified by using larger ships. The intermediate solution has therefore been developed whereby goods can be loaded on board smaller ship units which are taken aboard the main ship or integrated in the main ship by some means and at the delivery location they are again transported off the ship by means of the smaller units. This type of ship has not been used within the oil extraction field, nor has it been a solution to the transport problem which has existed, viz. bringing ashore large amounts of oil.
In the invention it has been recognized that major advantages can be obtained by designing a production vessel intended for test drillings or
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Avila Stephen
Kvaerner A.S.
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