EP3599342B1 - Platform for the production of oil - Google Patents

Description

The present invention relates to a platform for oil production with a base body, which comprises an oil production system, and with a support structure for the base body.

Such platforms for oil demand are generally known from the prior art. As a rule, such platforms are used offshore and have a support structure with which they are either fixed to a subsurface or can swim in the water. The carrier structure is not essential for the present invention, so that it will not be discussed in more detail.

The platforms for oil production each have an oil production system with which oil can be taken from an oil reservoir. This is done regularly with the help of a drilling device with which deeper layers of the earth can be penetrated and oil can be extracted from the deposit to the surface and transported to a storage location via pipelines. The technology of the oil delivery system per se is not relevant for the present invention either, so that this is not discussed in detail either.

The disadvantage of a platform of the prior art operated for oil production is that the oil produced via such a platform is brought to a refinery via pipelines or via a combination of tankers and pipelines which has been erected at a spatial distance from the platform on the mainland for the processing of petroleum.

Transporting the oil produced on the platform to a remote refinery is costly and with material losses. The costs arise from the construction and operation of pipelines and labor costs associated with reloading or forwarding. Loss of material occurs through leaks, through unusable residual quantities in interim storage facilities, etc.

Out WO97 / 12118 a method and a system are known which are integrated in a tanker so that the offshore oil, for example oil that is extracted from an oil rig and transferred to the tanker, can be separated into water, crude oil and gas using the Fischer-Tropsch method.

Out WO2008 / 057051 a watercraft is known that picks up oil from an offshore platform and processes it while it is in motion.

From XP055543165, DDJ Antia et. al. "Offshore Refining: A Cost-Effective Approach for Treating Associated Gas" is known to use the Fischer-Tropsch process on an offshore platform and to convert natural gas produced on the platform first into a synthetic gas (syngas) and then the synthetic gas into one to convert synthetic crude oil (Syncrude) and to mix this Syncrude with the extracted petroleum, to store it or to sell it separately.

From the above prior art it is not known to also refine / process oil produced on a platform on site.

The object of the present invention is therefore to optimize the production of an organic fuel based on petroleum.

The object is achieved in that the base body additionally has a system for processing petroleum, which includes an annular container which is arranged essentially around the base body.

The idea on which the present invention is based is to integrate a complete petroleum refinery, ie a complete installation for processing petroleum, into a platform for oil demand. That sounds visionary at first, but due to known processes, for example, it is over DE 10 2006 054 506 A1 ,
DE 10 2005 056 735 A1 and EP 1 538 191 A1 technically feasible. The present invention is concerned with the structural adaptation of a platform for oil demand for the additional implementation of a method known, for example, from the aforementioned prior art. Of course, other methods for processing crude oil can also be implemented on a platform according to the invention for oil demand, but the methods mentioned in the aforementioned prior art documents are demonstrably feasible in any case if space is limited. The adaptation of the limited space on an oil platform is necessary in order to carry out the method which is already known per se. That is the aim of the present invention.

One advantage of the present invention is that the system is arranged concentrically to the base body. The concentric arrangement to the base body of the platform ensures a favorable weight distribution on the base body and thus on the platform.

Another advantage of the present invention is that the system comprises an annular container which is arranged essentially around the base body. The ring container is used to hold petroleum or a petroleum mixture with various by-products, for example a catalyst and lime, which can flow in one main direction in the ring container.

Another advantage of the present invention is that the plant has at least one mixing turbine. In a mixing turbine, parts of the fluid flowing in the ring container are mixed with additives, such as a catalyst and lime, and fed back to the ring container.

Another advantage of the present invention is that the plant has at least one distillation column. In the distillation column, steam fractions of the fluid flowing in the annular container can be distilled.

Another advantage of the present invention is that the distillation column and the at least one mixing turbine are arranged on one plane of the base body. The arrangement of the distillation column and the at least one A geometric arrangement in relation to the platform is more easily possible with the mixing turbine on one level of the base body.

Another advantage of the present invention is that the ring container forms a ring barrier around the plane of the base body. As a result, the ring container spatially closes off the plane of the base body provided for the system from the outside and enables a geometric arrangement of further components in the center of the ring container.

Further advantages of the present invention emerge from the further features of the subclaims.

An embodiment of the present invention is described in more detail below with reference to the single figure.

The figure shows a plan view of a platform according to the present invention with a system integrated into the platform.

The representation in the figure is purely schematic and serves to clearly illustrate the present invention. In this respect, all details of an oil production system, a support structure, but also an oil refinery, which are customary for the construction and operation and are therefore known to the person skilled in the art, are omitted here.

To carry out the present invention, a conventional platform for oil demand can be used, into which a plant for processing petroleum can be integrated with the usual means, but taking into account the structural requirements according to the present invention.

For the implementation of the present invention it is therefore not essential in what form the individual lines are connected to the respective components or what diameter individual lines have. The precise routing of the lines on the platform is also not essential. In addition, there are a large number of valves, control devices for controlling a flow rate, a temperature, a pressure and other parameters which are not of importance here for the present invention. Conventional valves, drives and / or control devices can be used.

The platform for oil demand according to the present invention has a base body 1, which is shown schematically as a rectangle. In practice, the base body will not represent an ideal rectangle in plan view, but will have a polygonal contour. The ideal representation as a rectangle only serves to better explain the present invention.

A petroleum refinery or plant 3 for processing petroleum is connected to the base body 1. The connection of the system 3 to the base body 1 takes place by means of a mechanical connection known to those skilled in the art.

For example, load-bearing components (not shown) of the petroleum refinery 3 are welded to the base body 1. Alternatively, the system 3 can also be connected to the base body 1 with load-bearing components (not shown) via a detachable connection, for example by means of a screw connection. Such a releasable connection by means of screwing load-bearing components is also generally known to the person skilled in the art.

The system 3 is arranged concentrically with respect to the base body 1. The outermost part of the oil refinery 3 is formed by a ring container 5 which is arranged in a ring-like manner around the base body 1 in plan view.

The base body 1 forms a working plane 7 on which, in the present embodiment, eight mixing turbines 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 9.7, 9.8 are arranged. In the present embodiment, the ring container 5 projects upwards in the direction of the viewer over the working plane 7 and forms a ring barrier around the working plane 7. In other embodiments, fewer or more than eight mixing turbines 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 9.7, 9.8 can also be arranged on the working plane 7. An oil delivery device 10 is also arranged on the working level 7 and is connected to the annular container 5 via a feed pipe 10.1, in order to introduce extracted crude oil into the annular container 5.

In the present embodiment, a distillation column 11 is arranged in the center of the working plane 7 and extends upward in the direction of the viewer. In other embodiments, several distillation columns can also be used 11 be arranged geometrically offset on the working plane 7, so that a favorable weight distribution is maintained.

In other embodiments, a different number of mixing turbines 9.1 to 9.8 can also be expedient. In the embodiments in which a larger number of mixing turbines 9.1 to 9.8 are provided, as for example in the present embodiment, these are arranged concentrically on the working plane 7. In a preferred embodiment, as shown in the figure, the eight mixing turbines 9.1 to 9.8 are arranged tangentially to an inside of the annular container 5. As a rule, the mixing turbines 9.1 to 9.8 are cylindrical. However, embodiments are also conceivable in which the mixing turbines 9.1 to 9.8 are adapted to the circular arc on which they are arranged concentrically.

The annular container 5 is connected to the mixing turbine 9.1 via a first fluid discharge line 12.1. The annular container 5 is also connected to all further mixing turbines 9.2 to 9.8 via a respective fluid discharge line 12.2 to 12.8. The mixing turbine 9.1 is connected to the annular container 5 via a fluid supply line 13.1. The mixing turbines 9.2 to 9.8 are each connected to the annular container 5 by a fluid supply line 13.2 to 13.8.

The distillation column 11 is connected to a tank 17 via an outlet end 15. A finished product, for example diesel oil, can be taken from this tank 17.

The annular container 5 is connected to the distillation column 11 via a vapor line, so that fluid fractions in the vapor phase are diverted into the distillation column 11.

The distillation column 11 per se is also not described in detail in the present invention, since it is already generally known from the prior art. Customary distillation columns from the prior art processes mentioned at the outset can be used. The distillation column 11 also includes a condenser, which is not shown, but which should be more water-cooled in the present construction.

The mixing turbines 9.1 to 9.8 ensure that the catalyst is intimately mixed with air. This intimate mixing takes place essentially through the catalytic formation of _{CO 2.} The tangential arrangement of the mixing turbines 9.1 to 9.8 to the ring container 5 means that the oil-catalyst mixture in the ring container 5 is excited to move rapidly in the direction of the arrow (in the present embodiment, clockwise), so that newly entering petroleum with the oil Catalyst mixture (the fluid in the annular space 5) is mixed well.

In terms of process technology, the mixing turbines 9.1 to 9.8 are injected with enough air through a change in the inlet pressure that the reaction temperature is always set at around 270 ° C, at which the heavy components of the petroleum are completely converted. The lighter fractions of the petroleum evaporate during this The temperature and the heavy fractions of the petroleum follow the evaporation after the catalytic reaction.

The oil refinery is adapted to the changing amounts of oil produced by the pre-pressure of the air injection. If the delivery rate of the crude oil falls, the air injection pressure in the mixing turbines 9.1 to 9.8 is lowered again and the reaction temperature is thus kept in the normal range between 250 ° C and 300 ° C. In terms of process technology, it is important that the supply of lime and catalyst is regulated depending on the production conditions. A pH value of> 8 should be set. The throughput should also be set to a predetermined level at the standard temperature of 270 ° C. by adding a catalyst.

The mixing turbines 9.1 to 9.8 arranged on the platform according to the invention consume about 1 MW in addition to the power requirement of the platform 1 with all additional units. This electricity is generated in an additional generator with the feedstock of the generated diesel, that is to say with the product to be taken from the tank 17, or in the case of gas utilization with gas.

The mixing turbines 9.1 to 9.8 or the at least one mixing turbine 9.1 to 9.8 suck in the oil-catalyst mixture from the ring container 5, convert this mixture into fuel, water and CO ₂ and press the steam-containing mixture tangentially back into the ring container 5, so that in the ring container 5 a flow rate is generated in the direction of the arrow which corresponds to that in a stirred container. A catalyst known from nature is used as a catalyst in osmosis Mineral used. It is a cation-aluminum-silicate with the cathodes potassium, calcium and iron. This is also contained in coal as a mineral. In addition to the catalyst, lime or limestone is added to bind the acids so that the pH value is above 8. The proportion of the catalyst in the oil / catalyst mixture (fluid in the ring container 5) is approximately 3% by weight in the present embodiment.

The introduced lime is converted into salt due to the sulfur and chlorine content of the petroleum, which is extracted from the system depending on a viscosity measurement. This is done through the power consumption of a circulation pump, which opens the bitumen valve when a limit value is reached.

In a preferred embodiment, the ring of the ring container 5 has an outside diameter of about 50 m (inside diameter about 48 m) and a height of about 2 m. The distillation column 11 has a diameter of about 1.6 m. The condenser has a cooling capacity of around 2MW. 16 mixing turbines 9.1 to 9.8 are available. A compressed air injection takes place with 0.2 to 2 bar. The electric motors of the 16 mixing turbines have a power requirement of 2MW, which is covered by three diesel generators of 1MW each.

To produce middle distillate with a throughput of about 5,000 to 15,000 l / h of medium, in a preferred embodiment the extracted crude oil is fed into the annular container 5 together with 30 kg of catalyst and 30 kg of limestone (ground) via a screw conveyor.

List of reference symbols

1

Base body

3

Petroleum refinery / plant for processing petroleum

5

Ring container

7th

Working level

9.1

first mixing turbine

9.2

second mixing turbine

9.3

third mixing turbine

9.4

fourth mixing turbine

9.5

fifth mixing turbine

9.6

sixth mixing turbine

9.7

seventh mixing turbine

9.8

eighth mixing turbine

10

Oil delivery device

10.1

Feed tube

11

Distillation column

12.1

first fluid discharge line

12.2

second fluid discharge line

12.3

third fluid discharge line

12.4

fourth fluid discharge line

12.5

fifth fluid discharge line

12.6

sixth fluid discharge line

12.7

seventh fluid discharge line

12.8

eighth fluid discharge line

13.1

first fluid supply line

13.2

second fluid supply line

13.3

third fluid supply line

13.4

fourth fluid supply line

13.5

fifth fluid supply line

13.6

sixth fluid supply line

13.7

seventh fluid supply line

13.8

eighth fluid supply line

15th

Exit end

17th

tank

Claims (11)

1. Platform for oil production with a basic body (1) comprising an oil production facility (10; 10.1) and with a supporting structure for the basic body (1), characterized in that
   the basic body (1) additionally includes an installation (3) for processing oil comprising an annular container (5) arranged essentially around the basic body (1).
2. Platform according to claim 1,
   characterized in that
   the installation (3) is arranged concentrically in relation to the basic body (1).
3. Platform according to claim 1 or 2,
   characterized in that
   the installation (3) includes at least one mixing turbine (9.1; 9.2; 9.3; 9.4; 9.5; 9.6; 9.7; 9.7; 9.8).
4. Platform according to one of claims 1 to 3,
   characterized in that
   the installation (3) includes at least one distillation column (11).
5. Platform according to claim 4,
   characterized in that
   the distillation column (11) and the at least one mixing turbine (9.1; 9.2; 9.3; 9.4; 9.5; 9.6; 9.7; 9.7; 9.8) are arranged on a work level (7) of the basic body (1).
6. Platform according to claim 5,
   characterized in that
   the annular container (5) forms an annular barrier around the work level (7) of the basic body (1).
7. Platform according to claim 6,
   characterized in that
   the annular container (5) is connected to the distillation column (11) via a steam line.
8. Platform according to one of claims 3 to 7,
   characterized in that
   the annular container (5) is connected to the at least one mixing turbine (9.1; 9.2; 9.3; 9.4; 9.5; 9.6; 9.7; 9.7; 9.8) via respectively one fluid discharge line (12.1; 12.2; 12.3; 12.4; 12.5; 12.6; 12.7; 12.8) for discharging a fluid from the annular container (5) into the at least one mixing turbine (9.1; 9.2; 9.3; 9.4; 9.5; 9.6; 9.7; 9.7; 9.8) and respectively one fluid feed line (13.1; 13.2; 13.3; 13.4; 13.5; 13.6; 13.7; 13.8) for feeding a fluid from the at least one mixing turbine (9.1; 9.2; 9.3; 9.4; 9.5; 9.6; 9.7; 9.7; 9.8) into the annular container (5).
9. Platform according to one of claims 4 to 8,
   characterized in that
   a plurality of mixing turbines (9.1; 9.2; 9.3; 9.4; 9.5; 9.6; 9.7; 9.7; 9.8) are arranged on the work level (7) and the distillation column (11) forms a centre of the work level (7).
10. Platform according to one of claims 4 to 9,
    characterized in that
    the plurality of mixing turbines (9.1; 9.2; 9.3; 9.4; 9.5; 9.6; 9.7; 9.7; 9.8) are arranged tangentially on an inner side of the annular container (5).
11. Platform according to one of claims 4 to 10,
    characterized in that
    the distillation column (11) is connected at an outlet end (15) to a tank (17).

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