GB2246123A - Off-shore clean water supply - Google Patents
Off-shore clean water supply Download PDFInfo
- Publication number
- GB2246123A GB2246123A GB9110664A GB9110664A GB2246123A GB 2246123 A GB2246123 A GB 2246123A GB 9110664 A GB9110664 A GB 9110664A GB 9110664 A GB9110664 A GB 9110664A GB 2246123 A GB2246123 A GB 2246123A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- hydrogen
- chlorine
- electrolysis
- catalyst
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 17
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000001257 hydrogen Substances 0.000 claims abstract description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 14
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000460 chlorine Substances 0.000 claims abstract description 11
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000004576 sand Substances 0.000 claims abstract description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000001301 oxygen Substances 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 7
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 6
- 239000003054 catalyst Substances 0.000 claims abstract description 5
- 238000011084 recovery Methods 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims abstract description 4
- 239000007924 injection Substances 0.000 claims abstract description 4
- 239000010970 precious metal Substances 0.000 claims abstract description 4
- 239000011347 resin Substances 0.000 claims abstract description 4
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims abstract description 3
- 239000013535 sea water Substances 0.000 description 5
- 238000006392 deoxygenation reaction Methods 0.000 description 3
- 230000003115 biocidal effect Effects 0.000 description 2
- 239000003139 biocide Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009287 sand filtration Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/845—Compositions based on water or polar solvents containing inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Inorganic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
A process for the production of water suitable for injection for enhanced oil recovery comprising submerged sand covered perforated pipes into which water is drawn; into said water is fed hydrogen which reacts with dissolved oxygen. Preferably chemicals including chlorine are added to the water, a catalyst is used to increase the rate of reaction between the hydrogen and oxygen, the catalyst is a precious metal coated resin, and the hydrogen and chlorine are simultaneously produced by electrolysis.
Description
OFF-SHORE CLEAN WATER SUPPLY
This invention relates to supplying to an off-shore facility a clean supply of water. In particular it relates to a sub-sea method whereby sea water may be cleaned, deoxygenated and sterilised prior to it being injected for enhanced oil recovery.
This invention comprises a combination of filtration, deoxygenation and chlorine steriiisation.
In this invention a series of trenches are excavated, preferably of the order of .5 - 10 metres deep, more preferably 2 metres deep in eg a star formation. In the bottom of each trench is laid a perforated pipe; the pipe is covered with pebbles of graduated size gradually getting smaller. These in turn are then covered with a layer of sand, preferably at least one metre deep. The sand preferably fills the trench level with the sea bed. The sand may be covered with a perforated material so as to help prevent tidal actions scouring the sand from the trenches.
Sea water is drawn down through the sand filter and collected in the perforated pipes, thereby being filtered.
Mechanical filters may be used to supplement the sand filtration.
The filtered water is collected from the perforated pipes and passed to a module situated on the sea bed wherein it is treated with hydrogen so as to react away dissolved oxygen preferably using a precious metal coated resin.
The hydrogen may be produced by electrolysing sea water which has the advantage of also producing the chlorine necessary to carry out the sterilisation of the water subsequent to deoxygenation. Hydrogen and chlorine may also be piped down to the module.
A power supply may be fed to the module in order to effect the electrolysis of the sea water by known means to produce hydrogen and/or chlorine and also drive any pumps and auxiliary systems.
Following deoxygenation, the filtered deoxygenated sea water may be treated with chlorine which acts as a biocide. Chemicals may then be added to the water, some of which may act as a biocide. It is then suitable for injection into a hydrocarbon-bearing formation to enhance recovery.
The sand may be cleaned by backwashing.
In other words, this invention is a process for the production of water suitable for injection for enhanced oil recovery comprising submerged sand covered perforated pipes into which water is drawn; into said water is fed hydrogen which reacts with dissolved oxygen. Preferably a precious metal coated resin is used as a catalyst for the oxygen/hydrogen reaction. Preferably the hydrogen and chlorine used are produced by electrolysis, preferably simultaneously.
Claims (1)
- ClaimsClaim 1 A process for the production of water suitable for injection for enhanced oil recovery comprising submerged sand covered perforated pipes into which water is drawn; into said water is fed hydrogen which reacts with dissolved oxygen.Claim 2 A process as claimed in Claim 1 wherein chemicals including chlorine are added to the water.Claim 3 A process as claimed in Claims 1 and 2 wherein a catalyst is used to increase the rate of reaction between the hydrogen and oxygen.Claim 4 A process as claimed in Claim 3 wherein the catalyst is a precious metal coated resin.Claim 5 A process as claimed in any previous claim wherein the hydrogen is produced by electrolysis.Claim 6 A process as claimed in Claims 2, 3, 4 and 5 wherein the chlorine is produced by electrolysis.Claim 7 A process as claimed in any previous claim wherein the hydrogen and chlorine are simultaneously produced by electrolysis.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB909011002A GB9011002D0 (en) | 1990-05-16 | 1990-05-16 | Off-shore clean water supply |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9110664D0 GB9110664D0 (en) | 1991-07-03 |
| GB2246123A true GB2246123A (en) | 1992-01-22 |
| GB2246123B GB2246123B (en) | 1993-11-03 |
Family
ID=10676104
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB909011002A Pending GB9011002D0 (en) | 1990-05-16 | 1990-05-16 | Off-shore clean water supply |
| GB9110664A Expired - Fee Related GB2246123B (en) | 1990-05-16 | 1991-05-16 | Off-shore clean water supply |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB909011002A Pending GB9011002D0 (en) | 1990-05-16 | 1990-05-16 | Off-shore clean water supply |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB9011002D0 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007035106A1 (en) * | 2005-09-22 | 2007-03-29 | Well Processing As | Method and device for separation of particles from injection water |
| WO2014126479A1 (en) * | 2013-02-18 | 2014-08-21 | Seabox As | System and method for disinfecting and removing biological material from water to be injected in an underwater injection well |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2067234A (en) * | 1980-01-11 | 1981-07-22 | Shell Int Research | Method and means for waterflooding a hydrocarbon fluid containing permeable formation below a body of water |
| GB2160191A (en) * | 1984-05-07 | 1985-12-18 | Conoco Inc | Process and apparatus for removing dissolved oxygen |
-
1990
- 1990-05-16 GB GB909011002A patent/GB9011002D0/en active Pending
-
1991
- 1991-05-16 GB GB9110664A patent/GB2246123B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2067234A (en) * | 1980-01-11 | 1981-07-22 | Shell Int Research | Method and means for waterflooding a hydrocarbon fluid containing permeable formation below a body of water |
| GB2160191A (en) * | 1984-05-07 | 1985-12-18 | Conoco Inc | Process and apparatus for removing dissolved oxygen |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007035106A1 (en) * | 2005-09-22 | 2007-03-29 | Well Processing As | Method and device for separation of particles from injection water |
| EP1929124A1 (en) * | 2005-09-22 | 2008-06-11 | Well Processing AS | Method and device for separation of particles from injection water |
| AU2006292882B2 (en) * | 2005-09-22 | 2009-10-08 | Well Processing As | Method and device for separation of particles from injection water |
| US7604051B2 (en) | 2005-09-22 | 2009-10-20 | Well Processing As | Method and device for separation of particles from injection water |
| EP1929124B1 (en) * | 2005-09-22 | 2017-10-25 | Seabox As | Method and device for separation of particles from injection water |
| WO2014126479A1 (en) * | 2013-02-18 | 2014-08-21 | Seabox As | System and method for disinfecting and removing biological material from water to be injected in an underwater injection well |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9011002D0 (en) | 1990-07-04 |
| GB2246123B (en) | 1993-11-03 |
| GB9110664D0 (en) | 1991-07-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19950516 |