GB2342919A - Disposal of Associated Gases from Offshore Oilfields - Google Patents
Disposal of Associated Gases from Offshore Oilfields Download PDFInfo
- Publication number
- GB2342919A GB2342919A GB9924989A GB9924989A GB2342919A GB 2342919 A GB2342919 A GB 2342919A GB 9924989 A GB9924989 A GB 9924989A GB 9924989 A GB9924989 A GB 9924989A GB 2342919 A GB2342919 A GB 2342919A
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- GB
- United Kingdom
- Prior art keywords
- methanol
- gas
- convert
- oil
- vessel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000007789 gas Substances 0.000 title claims abstract description 88
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 306
- 238000003860 storage Methods 0.000 claims abstract description 25
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 22
- 239000001257 hydrogen Substances 0.000 claims abstract description 22
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 16
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 16
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 16
- 238000007667 floating Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 238000004821 distillation Methods 0.000 claims description 8
- 238000011068 loading method Methods 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 3
- 238000000629 steam reforming Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 58
- 239000000047 product Substances 0.000 description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/15—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively
- C07C29/151—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases
- C07C29/1516—Multisteps
- C07C29/1518—Multisteps one step being the formation of initial mixture of carbon oxides and hydrogen for synthesis
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/005—Waste disposal systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A system for the disposal of small amounts of associated gas from an offshore oil field, comprises the elements of a floating vessel (10), means (12) on that vessel to separate small amounts of gas from oil, means (20) on the vessel to convert the separated gas to methanol, segregated storage space (22) on the vessel to contain the methanol, and provision (19,25) to transfer the methanol intermittently to a products tanker (23) or to segregated tanks in an offtake tanker (not shown), for removal from the oil field and subsequent disposal; in which the means to convert the separated gas to methanol includes a compact reformer capable of operation at high temperature and pressure to convert gas and steam to carbon monoxide and hydrogen (synthesis gas), and means to synthesise methanol from the carbon monoxide and hydrogen.
Description
2342919 GAS DISPOSAL SYSTEM The invention relates to a system for the
disposal of small amounts of associated gas
from offshore oil fields.
In many offshore oil fields, gas (largely methane) is associated with the oil. In the past it has been common practice to separate the associated gas from the oil at an offshore platform, and then to transmit that gas to shore via a nearby gas pipeline. Alternatively, if there has been no convenient pipeline, the surplus gas has been burned at the platform or 'flared'.
However, with the enforcement of increasingly stringent anti-pollution regulations, flaring is being severely restricted, As major oil fields with large reserves are passing their production peaks, small oil fields with associated gas are being considered for development. In the case of small oil fields which are remote from existing gas pipelines, disposal of. the associated gas is a problem which precludes efficient exploitation of the oil. For the small amounts of gas produced. it would be too expensive to install a special export pipeline (or to reinject the gas into the field); and flaring has been ruled out by the anti-pollution regulations.
This invention seeks to dispose of small amounts of associated gas, without prejudicing efficient working of an offshore oil field.
Production of methanol at offshore sites has been proposed in the past. The emphasis has been on large-scale plants, attempting to make the methanol production economic in itself.
Australian Patent Specification 64593/90 describes a process for such production. However, the size and configuration of conventional methanol plants have made it impractical to convert small amounts of associated gas to methanol on floating vessels using conventional plants.
The invention provides a system for the disposal of small amounts of associated gas from an offshore oil field, which system comprises the elements:
a floating vessel, means on that vessel to separate small amounts of gas from oil, means on the vessel to convert the separated gas to methanol, segregated storage space on the vessel to contain the methanol, and provision to transfer the methanol intermittently to a products tanker (or to segregated tanks in an offtake tanker), for removal from the oil field and subsequent disposal-, in which the means to convert the separated gas to methanol includes a compact reformer capable of operation at high temperature and pressure to convert gas and steam to carbon monoxide and hydrogen (synthesis gas), and means to synthesise methanol from the carbon monoxide and hydrogen.
Preferably the means to convert the separated gas to' methanol includes a steam reforming zone, a methanol synthesis zone, a methanol recovery zone, and a separation zone for separating unconverted synthesis gas into hydrogen rich and hydrogen depleted streams.
It is preferred that the system defined above is used in combination with a products tanker which has been specially modified to allow bow loading, and the products tanker is used to remove the methanol.
The means to convert the separated gas to methanol may be followed by means to extract carbon dioxide from the waterlmethanol mixture so produced.
The means to convert the separated gas to methanol may include a distillation column to take out water.
Advantageously the vessel has an internal turret mooring system.
The invention includes a method of disposal for small amounts of associated gas arising from the production of oil from an offshore oil field, comprising the steps of:- separating the small amounts of gas from the oil, is converting the separated gas to methanol, storing the methanol in a segregated storage space (separate from the oil), and transferring the methanol intermittently to a products tanker (or to segregated tanks in an offtake tanker), for removal from the oil field and subsequent disposal-, in which the means to convert the separated gas to methanol includes a compact reformer capable of operation at high temperature and pressure to convert gas and steam to carbon monoxide and hydrogen (synthesis gas). and means to synthesise methanol from the carbon monoxide and hydrogen.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawings, in which:
Figure 1 is a side view of a Floating Production Storage Offloading (FPSO) vessel; Figure 2 is a plan view of that FPSO; Figure 3 is a partial section (to an enlarged scale) on the line 111-111 in Figure 2; and Figure 4 is a diagram showing an offloading technique.
The concept descfted by way of example 'is based on a newly built Suezmax tanker hull (of approximately 150,000 tonnes dwt) with an internal turret mooring system. A vessel of this size would be well suited to carry equipment for processing oil production of up to 50,000 barrels per day (bpd) with some space to spare; and it would have a total storage capacity for about 1,000,000 barrels (bbl) of liquids. This concept would be capable of operating in the North Sea or offshore West Africa or on Australia's NW shelf, or in any other area where suitable offshore oil fields are located.
As shown generally in Figures 1 and 2, a vessel 10 has a turret mooring 11 near to its bow. The turret mooring maintains the vessel on station at or near a small offshore oil field. The vessel can weather vane on the turret mooring, and so the vessel always lies head to wind. (A turret mooring would be necessary for the northern North Sea. However, it would not be required in locations having relatively benign environmental conditions such as offshore West Africa.) The vessel 10 has been equipped as an FPSO, and has process plant 12, process support equipment 14 and power generation units 15. Details of this equipment outfit are given below.
The oil processing equipment for this example has been designed for a throughput of 50,000 bpd of oil. It is based on a conventional three stage oil/water/gas separation system, with an electrostatic coalescer and produced water clean-up. The associated gas passes to an electrically driven compressor which supplies feed gas at approximately 50 bar to a methanol plant (to be described later).
The methanol plant would require 3.5MW of electrical power. When the requirements of the oil processing and utility equipment are added, the total electrical power demand is about 12MW. The FPSO includes two 100% dual fuel turbine driven generators to supply this power.
The methanol plant would require 26MW of cooling. The cooling system is conventional, with a closed loop cooling medium system being cooled by seawater in a plate and frame type heatexchanger.
This equipment outfit enables the FPSO to remain permanently on station, so that it can continuously process mixed hydrocarbons arising from the offshore oil field. Additionally, the
FPSO has cranes 16 and 17, and a helideck 18-, and there is an offloading system 19 at its stern.
In use, mixed hydrocarbons (comprising oil and small amounts of associated gas) are produced from subsea wellheads (not shown); and are led to the FPSO up risers (shown in Figure 4).
The process plant 12 is arranged to separate out from the mixed hydrocarbons the small amounts of gas which are associated with the oil. For this example, the "small amounts of gas" are assumed to amount to 10 million standard cubic feet per day (mmscfd). The separated gas is led to a methanol plant 20 located directly aft of the turret mooring 11 Following the invention, the methanol plant is modularized, and includes high temperature and pressure compact reformers 21.
The gas to methanol process described in this example has been developed by B.P. and Kvaerner Process Technology (KPT). In summary. the process involves two stages. The first stage is the conversion of natural gas (methane) and steam to a mixture of carbon monoxide and hydrogen (synthesis gas). This stage takes place at high temperature and pressure in a compact reformer. The second stage is the synthesis of methanol from the carbon monoxide and hydrogen.
One process for the first stage is described in KPT's PCT Application WO98/28071. The temperature within the compact reformer may be 450'C or more, and the pressure may be between 30 - 40 bar.
KPT has also developed a reactor which achieves major savings in size, weight and thermal efficiency. This reactor can be used for the second stage of the process (i.e. the synthesis of methanol). Because the reactor is smaller and lighter than conventional units, it is ideally suited for use offshore. This reactor is described in KPT's PCT Application W097/24175. The temperature within the reactor may be between 200 and 300C (preferably 250 and 2800C), and the pressure may be between 30-100 bar (preferably 50 - 80 bar).
The expression "high temperature and pressure" in the claims is exemplified by the temperatures and pressures quoted above. Details of operating parameters are given in the two PCT Applications W098/28071 and WO97/24175; (or alternatively in W098/28248).
The methanol plant converts the separated gas to liquid methanol (methyl alcohol), and the methanol is pumped to segregated storage spaces (e.g. 22) within the hull of the FPSO.
The segregated storage spaces 22 (occupying some 25% of the usable hull capacity) are distributed along the length of the hull. Only small amounts of methanol are produced (in this example 3, 100 barrels per day from 10 mmscfd of associated gas), and so the segregated storage spaces could be relatively small, and would take a significant period of time - several weeks - to fill.
Methanol produced on the FPSO described by way of example would contain about 20% water. The methanol would be removed from the FPSO in that state. Alternatively, distillation may be possible on the FPSO, to take out water prior to removal of the methanol.
Most of the methanol production process, including process steps in the reformers and the methanol reactors, consists of gas reactions. These would not be affected by the motions of a ship. An exception would be a methanol distillation column. If there are doubts about the feasibility of operating a methanol distillation column on a ship, the methanol/water mixture could initially be removed without distillation. This would require the extraction of Carbon Dioxide (which would otherwise form a corrosive mixture) from the produced methanol/water mixture.
However, it is likely to be possible to distill the methanol/water mixture on the FPSO, e.g.
by using two or three short distillation columns instead of one large column, so to take out water from the mixture.
When the segregated methanol storage spaces 22 are -nearly full, a speciaily modified products tanker is positioned astern of the FPSO. The products tanker is modified for bow mooring (and loading), so that it can be secured to the downwind end (stern) of the FPSO. The products tanker is smaller than offtake tankers used to offload oil from 'the FPSO, and it is adapted to carry methanol.
Figure 4 shows an FPSO of the kind illustrated in Figures 1 to 3, and a products tanker 23. The products tanker 23 is moored by its bow to the stern of the FPSO using lines 24.
When the products tanker 23 is secured, methanol can be pumped from the segregated methanol storage spaces 22 to the products tanker via hoses 25 extending from the offloading system 19.
Thus the small amount of gas associated with the oil can be converted to liquid methanol and periodically removed from the FPSO.
Two offloading options are available.
The first option envisages a dedicated products tanker for the removal of methanol (as described above). This products tanker would be converted to allow bow mooring from the FPSO. Oil would be offloaded by'vessels of opportunity'.
The FPSO, of this example has a typical Suezmax tanker hull, with storage capacity for approximately 1,000,000 bbl of liquids. This storage capacity would be divided into approximately 750,000 bbl dedicated to oil and 250,000 bbl dedicated to methanol.
A typical products tanker would be selected which could hold about 200, 000 barrels of methanol; and it is assumed that the oil would be offloaded in 500,000 bbl parcels, The 25:75 subdivision of the FPSO storage space would therefore allow for storage of one offtake of each product, plus about 5 days extra production of oil at peak output.
The maximum envisaged production of 50,000 bpd of oil would result in an offloading frequency of once every 10 days, and later production - say of 25,000 bpd of oil - would result in an offloading frequency of once every 20 days. The methanol production of 3,100 barrels per day would mean an offloading frequency of about once every 65 days.
Assuming an oil field offshore West Africa, a round trip to a Western European terminal could take 40 days. For maximum oil production (offloading every 10 days), four offtake tankers would be needed; and for the later oil production (offloading every 20 days), two offtake tankers would be needed. The low offloading frequency for methanol means that only one products tanker would be needed.
The loading of oil and methanol would be scheduled so that only one tanker was moored astern of the FPSO at any one time, Distribution of segregated stcrage spaces 22 along the length of the hull avoids excessive hogging and sagging of the hull due to out of phase offloading. The configuration of storage spaces shown in Figure 1 is Illustrative only, and does not show a particularly preferred arrangement.
SUMMARY I Methanol Later Oil Maximum Oil
FIRST OPTION Production Production Production bpd 3,100 25,000 50.000 Storage in FPSO bbi 250,000 750,000 750,000 Offtake size bbl 200,000 500.000 500,000 Offtake period day 65 20 10 Offtake tankers No. 1 2 4 In an alternative offloading option (not shown), it could be possible to remove both methanol and the oil in segregated cargo tanks of an offtake tanker. The offtake tanker would need some preparatory work on the methanol tanks, e.g. to check the tank coatings and replace the firefighting foam. (Crude oil tankers generally use protein- based firefighting foam, which is not suitable for use on methanol.) In this alternative option, division of the FPSO storage spaces would be 15:85 methanol to oil, rather than the 25:75 division of the FPSO storage spaces in the first option.
Given an offtake tanker of the same size as that assumed in the first option, the capacity for oil would be reduced by the volume of tanks converted to carry methanol. Offloading of oil and methanol could take place every 9 days for 50,000 bpd oil production, or every 18 days for 25,000 bpd oil production.
For maximum oil production (offloading every 9 days), five offtake tankers would be needed-, and for the later oil production (offloading every 18 days), three offtake tankers would be needed.
The requirement for preparatory work means that dedicated offtake tankers ('shuttle tankers') would be needed. With this option, 'vessels of opportunity' could not be employed as offtake tankers.
SUMMARY Methanol Later Oil Maximum Oil
ALTERNATIVE Production Production Production bpd 3,100 25,000 50,000 Storage on FPSO bbl 150,000 850,000 850,000 Offtake size bbl 56K(min oil) 450,000 450,000 28K(maxoil) Offtake period with oil 18 9 Offtake tankers No. with oil 3 5 The example described above has dealt with an offshore oil field having a peak production of 50,000 bpd, and "small amounts of associated gas" amounting to 10 mmscfd. The invention could be applicable to smaller amounts of oil (e.g. 5,000 bbl) or to larger or smaller amounts of gas (e. g. 20 down to 5 mmscfd). These amounts would require appropriate resizing of the equipment and storage space on the FPSO, and revised offtake frequencies. These production levels are not limiting on the scope of the claims.
In this way, associated gas (produced as an undesirable by-product of oil production) could be removed from the FPSO in liquid form (as methanol), and disposed of economically. By disposing of the gas, the overall economics of an offshore oil field with small amounts of associated gas could be rendered viable, particularly in areas where gas flaring is not permitted.
Claims (1)
- Claims1/ A system for the disposal of small amounts of associated gas from an offshore oil field, which system comprises the elements:a floating vessel, means on that vessel to separate small amounts of gas from oil, means on the vessel to convert the separated gas to methanol, segregated storage space on the vessel to contain the methanol, and provision to transfer the methanol intermittently to a products tanker (or to segregated tanks in an offtake tanker), for removal from the oil field and subsequent disposal; in which the means to convert the separated gas to methanol includes a compact reformer capable of operation at high temperature and pressure to convert gas and steam to carbon monoxide and hydrogen (synthesis gas), and means to synthesise methanol from the carbon monoxide and hydrogen.2/ A system as claimed in claim 1 in which the means to convert the separated gas to methanol includes a steam reforming zone, a methanol synthesis zone, a methanol recovery zone, and a separation zone for separating unconverted synthesis gas into hydrogen rich and hydrogen depleted streams.3/ A system as claimed in claim 1 or claim 2 in combination with a products tanker which has been specially modified to allow bow loading, and the products tanker is used to remove the methanol.4/ A system as claimed in any one of the preceding claims in which the means to convert the separated gas to methanol is followed by means to extract carbon dioxide from the water/methanol mixture so produced.5/ A system as claimed in any one of claims 1 to 3 in which the means to convert the separated gas to methanol includes a distillation column to take out remove water.6/ A system as claimed in any one of the preceding claims in which the vessel has an internal turret mooiring system.A method of disposal for'small amounts of ass----;ated gas arisirg from the production of oil from an offshore oil field, comprising the steps of:separating the small amounts of gas from the oil, converting the separated gas to methanol, storing the methanol in a segregated storage space (separate from the oil), and transferring the methanol intermittently to a products tanker (or to segregated tanks in an offtake tanker, for removal from the oil field and subsequent disposal-, in which the means to convert the separated gas to methanol comprises a compact reformer capable of operation at high temperature and pressure to convert gas and steam to carbon monoxide and hydrogen (synthesis gas), and means to synthesise methanol from the carbon monoxide and hydrogen.8/ A system substantially as hereinbefore described by way of example with reference to and as shown in the accompanying drawings.9/ A method substantially as hereinbefore described by way of example with reference to the accompanying drawings.Amendments to the claims have been filed as follows Claims 1/ A system for the disposal of small amounts of associated gas from an offshore oil field, which system comprises the elements:a floating vessel having storage space to contain oil, means on that vessel to separate small amounts of gas from oil, means on the vessel to convert the separated gas to methanol, segregated storage space on the vessel to contain the methanol, and provision to transfer the methanol intermittently to a products tanker (or to segregated tanks in an offtake tanker), for removal from the oil field and subsequent disposal; in which the means to convert the separated gas to methanol includes a compact reformer capable of operation at high temperature and pressure to convert gas and steam to carbon monoxide and hydrogen (synthesis gas), and means to synthesise methanol from the carbon monoxide and hydrogen.2/ A system as claimed in claim 1 in which the means to convert the separated gas to methanol includes a steam reforming zone, a methanol synthesis zone, a methanol recovery zone, and a separation zone for separating unconverted synthesis gas into hydrogen rich and hydrogen depleted streams.3/ A system as claimed in claim 1 or claim 2 in combination with a products tanker which has been specially modified to allow bow loading, and the products tanker is used to remove the methanol.4/ A system as claimed in any one of the preceding claims in which the means to convert the separated gas to methanol is followed by means to extract carbon dioxide from the water/methanol mixture so produced.5/ A system as claimed in any one of claims 1 to 3 in which the means to convert the separated gas to methanol includes a distillation column to take out water.61 A system as claimed in any one of the preceding claims in which the vessel has an internal turret mooring system.7/ A method of disposal for small amounts of associated gas arising from the production of oil from an offshore oil field, comprising the steps of:separating the small amounts of gas from the oil, converting the separated gas to methanol, storing the methanol in a segregated storage space (separate from the oil), and transferring the methanol intermittently to a products tanker (or to segregated tanks in an offtake tanker, for removal from the oil field and subsequent disposal; in which the means to convert the separated gas to methanol comprises a compact reformer capable of operation at high temperature and pressure to convert gas and steam to carbon monoxide and hydrogen (synthesis gas), and means to synthesise methanol from the carbon monoxide and hydrogen.8/ A system substantially as hereinbefore described by way of example with reference to and as shown in the accompanying drawings.Is 9/ A method substantially as hereinbefore described by way of example with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9822975.0A GB9822975D0 (en) | 1998-10-21 | 1998-10-21 | Gas disposal system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9924989D0 GB9924989D0 (en) | 1999-12-22 |
| GB2342919A true GB2342919A (en) | 2000-04-26 |
Family
ID=10840965
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB9822975.0A Ceased GB9822975D0 (en) | 1998-10-21 | 1998-10-21 | Gas disposal system |
| GB9924989A Withdrawn GB2342919A (en) | 1998-10-21 | 1999-10-21 | Disposal of Associated Gases from Offshore Oilfields |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB9822975.0A Ceased GB9822975D0 (en) | 1998-10-21 | 1998-10-21 | Gas disposal system |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU6352999A (en) |
| GB (2) | GB9822975D0 (en) |
| WO (1) | WO2000023689A1 (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9928132D0 (en) | 1999-11-26 | 2000-01-26 | Bp Amoco Plc | Process |
| DE10015777A1 (en) * | 2000-03-30 | 2001-10-04 | Abb Research Ltd | Utilization of natural gas on oil rigs by conversion to hydrogen and carbon, with on site use of the hydrogen in electricity production and on-shore use of the carbon in fiber or fuel production |
| GB0112796D0 (en) | 2001-05-25 | 2001-07-18 | Bp Exploration Operating | Process |
| FR2878858B1 (en) * | 2004-12-06 | 2007-03-16 | Air Liquide | PROCESS FOR TREATING THE ASSOCIATED GAS FROM AN OFF-SHORE PETROLEUM FIELD |
| GB0510356D0 (en) | 2005-05-20 | 2005-06-29 | Bp Chem Int Ltd | Process for the conversion of synthesis gas to oxygenate |
| AU2006248728B2 (en) | 2005-05-20 | 2011-12-01 | Bp Chemicals Limited | Process for the conversion of synthesis gas to oxygenates |
| EP1741692A1 (en) | 2005-07-06 | 2007-01-10 | BP Chemicals Limited | Process for the conversion of hydrocarbons to C2-oxygenates |
| EP2060553A1 (en) | 2007-11-14 | 2009-05-20 | BP p.l.c. | Process for the conversion of hydrocarbons into alcohol |
| EA016551B1 (en) | 2007-11-14 | 2012-05-30 | Бп П.Л.К. | An improved process for the production of alcohol from a carbonaceous feedstock |
| EP2070896A1 (en) | 2007-12-12 | 2009-06-17 | BP p.l.c. | A process for the conversion of n-butanol to di-isobutene and propene |
| EP2105428A1 (en) | 2007-12-12 | 2009-09-30 | BP p.l.c. | A process for the conversion of n-butanol to di-isobutene |
| EP2070894A1 (en) | 2007-12-12 | 2009-06-17 | BP p.l.c. | A process for the conversion of n-butanol of n-butanol to di-isobutene and pentene |
| EP2072486A1 (en) | 2007-12-17 | 2009-06-24 | BP p.l.c. | Process for the conversion of hydrocarbons to ethanol |
| EP2072489A1 (en) | 2007-12-17 | 2009-06-24 | BP p.l.c. | Process for the conversion of hydrocarbons into ethanol |
| EP2072492A1 (en) | 2007-12-17 | 2009-06-24 | BP p.l.c. | Process for the conversion of hydrocarbons to ethanol |
| EP2072490A1 (en) | 2007-12-17 | 2009-06-24 | BP p.l.c. | Process for the conversion of hydrocarbons to alcohols |
| EP2072491A1 (en) | 2007-12-17 | 2009-06-24 | BP p.l.c. | Process for the conversion of alcohol(s) into alcohol(s) with increased carbon-chain |
| EP2072488A1 (en) | 2007-12-17 | 2009-06-24 | BP p.l.c. | Process for the conversion of hydrocarbon to ethanol |
| EP2072487A1 (en) | 2007-12-17 | 2009-06-24 | BP p.l.c. | Process for the conversion of hydrocarbons to ethanol |
| EP2186787A1 (en) | 2008-11-13 | 2010-05-19 | BP p.l.c. | Hydrogenation of ethanoic acid to produce ethanol |
| EP2199254A1 (en) | 2008-12-11 | 2010-06-23 | BP p.l.c. | Integrated gas refinery |
| EP2196447A1 (en) | 2008-12-12 | 2010-06-16 | BP p.l.c. | An improved process for hydrogenating alkyl ester(s) in the presence of carbon monoxide |
| EP2287145A1 (en) | 2009-08-12 | 2011-02-23 | BP p.l.c. | Process for purifying ethylene |
| RU2742652C1 (en) * | 2020-08-14 | 2021-02-09 | Общество с ограниченной ответственностью "Флотметанол" | Method for producing methanol on a floating platform |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2237287A (en) * | 1989-10-13 | 1991-05-01 | Enserch Int Investment | Production of synthesis gas |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU562541B2 (en) * | 1981-01-27 | 1987-06-11 | M.P. Sweeney | Synthesis gas system |
| GB2275230B (en) * | 1993-02-19 | 1997-06-04 | Roger Dyer | An oil production ship, vessel or barge |
| NO953797L (en) * | 1995-09-25 | 1997-03-26 | Norske Stats Oljeselskap | Process and plant for treating a brönnström produced from an offshore oil field |
| GB9526674D0 (en) * | 1995-12-29 | 1996-02-28 | Davy Process Techn Ltd | Reactor |
| GB9617209D0 (en) * | 1996-08-16 | 1996-09-25 | Mcdermott Sa J Ray | Vessel turret systems |
| EP0849245A1 (en) * | 1996-12-20 | 1998-06-24 | Kvaerner Process Technology Limited | Process and plant for the production of methanol |
-
1998
- 1998-10-21 GB GBGB9822975.0A patent/GB9822975D0/en not_active Ceased
-
1999
- 1999-10-21 AU AU63529/99A patent/AU6352999A/en not_active Abandoned
- 1999-10-21 WO PCT/GB1999/003481 patent/WO2000023689A1/en active Application Filing
- 1999-10-21 GB GB9924989A patent/GB2342919A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2237287A (en) * | 1989-10-13 | 1991-05-01 | Enserch Int Investment | Production of synthesis gas |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9924989D0 (en) | 1999-12-22 |
| GB9822975D0 (en) | 1998-12-16 |
| AU6352999A (en) | 2000-05-08 |
| WO2000023689A1 (en) | 2000-04-27 |
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| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |