WO1982001737A1 - Method of treating oil-contaminated drill muds or cuttings prior to reuse or disposal - Google Patents
Method of treating oil-contaminated drill muds or cuttings prior to reuse or disposal Download PDFInfo
- Publication number
- WO1982001737A1 WO1982001737A1 PCT/GB1981/000252 GB8100252W WO8201737A1 WO 1982001737 A1 WO1982001737 A1 WO 1982001737A1 GB 8100252 W GB8100252 W GB 8100252W WO 8201737 A1 WO8201737 A1 WO 8201737A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil
- solvent
- solids
- stream
- contaminated
- Prior art date
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims description 14
- 238000005553 drilling Methods 0.000 claims abstract description 29
- 239000007787 solid Substances 0.000 claims abstract description 18
- 238000005406 washing Methods 0.000 claims abstract description 14
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000002904 solvent Substances 0.000 claims description 22
- 229930195733 hydrocarbon Natural products 0.000 claims description 5
- 150000002430 hydrocarbons Chemical class 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 239000004215 Carbon black (E152) Substances 0.000 claims description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- 238000011109 contamination Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 238000013019 agitation Methods 0.000 claims 3
- 238000004064 recycling Methods 0.000 claims 2
- 238000007605 air drying Methods 0.000 claims 1
- 239000003960 organic solvent Substances 0.000 claims 1
- 150000005826 halohydrocarbons Chemical class 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 239000012159 carrier gas Substances 0.000 description 2
- 238000005202 decontamination Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- BPIUIOXAFBGMNB-UHFFFAOYSA-N 1-hexoxyhexane Chemical compound CCCCCCOCCCCCC BPIUIOXAFBGMNB-UHFFFAOYSA-N 0.000 description 1
- SZNYYWIUQFZLLT-UHFFFAOYSA-N 2-methyl-1-(2-methylpropoxy)propane Chemical compound CC(C)COCC(C)C SZNYYWIUQFZLLT-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 239000005662 Paraffin oil Substances 0.000 description 1
- TUVYSBJZBYRDHP-UHFFFAOYSA-N acetic acid;methoxymethane Chemical compound COC.CC(O)=O TUVYSBJZBYRDHP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- NGAZZOYFWWSOGK-UHFFFAOYSA-N heptan-3-one Chemical compound CCCCC(=O)CC NGAZZOYFWWSOGK-UHFFFAOYSA-N 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/02—General arrangement of separating plant, e.g. flow sheets specially adapted for oil-sand, oil-chalk, oil-shales, ozokerite, bitumen, or the like
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
- E21B21/066—Separating solids from drilling fluids with further treatment of the solids, e.g. for disposal
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/068—Arrangements for treating drilling fluids outside the borehole using chemical treatment
-
- 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
Definitions
- This invention relates to the treatment of oil-contaminated drill solids, e.g. drilling muds or drill cuttings prior to reuse or disposal.
- Oil-based muds are also preferred since, in general, they permit higher drilling rates, and also they facilitate drilling at an angle to the vertical, for example, when drilling inclined well bores which may be at anything up to 50° or 60° from the vertical or more.
- the drill cuttings from such operations present a disposal problem because of the oil contamination.
- the hydrocarbon values in such oil-contaminated drill cuttings are proposed to be removed by a combination of vacuum distillation and grinding by heating the cuttings under reduced pressure in a pressure vessel equipped with means for milling or shearing the drill cuttings during the heating process.
- oil contaminated drill cuttings are passed on a conveyor belt through a preheater for partial drying and then to a high-intensity infrared heating chamber in which the volatile hydrocarbons are expelled from the cuttings at a surface temperature higher than the combustion point of petroleum.
- the oil content of oil-contaminated drill cuttings can be economically and efficiently reduced to permitted levels by washing the oil-contaminated drill cuttings, preferably after screening to remove fines and supernatant drilling mud which can be re-used, with a single solvent system consisting of a haiogenated hydrocarbon such as carbon tetrachloride or 1,1,1-trichioroethane, and centrifuging the washed cuttings to remove the oil-solvent solution, which can be recycled to the washing process and/or distilled to recover the washing solvent and an oil residue which can be recycled to the drilling process.
- a haiogenated hydrocarbon such as carbon tetrachloride or 1,1,1-trichioroethane
- the method of the invention is also applicable to the recovery of the drilling mud itself, particularly drilling muds which are weighted with barytes. Because of the cost element, the recovery of the barytes for reuse can be an important factor in the economics of subterranean and submarine drilling operations, and the present invention provides a simple efficient and economic way in which this can be done.
- the separated drilling mud can be treated in essentially the same way, for example, by initial screening or centrifuging to separate out the mud solids, and removing from the separated mud solids decontaminating oil by washing with the halohydrocarbon and centrifuging in the manner described.
- oil-contaminated drill cuttings which have been screened to remove surplus oil-based fluids and fines for re-use in the drilling operation are passed via line 1 to a mixing tank 2. If desired a portion of the separated fines may also be passed to the tank.
- the cuttings are contacted with an organic haiohydrocarbon solvent washing liquid, preferably 1,1,1-trichloroethane, fed from a storage tank 12.
- an organic haiohydrocarbon solvent washing liquid preferably 1,1,1-trichloroethane
- a recycle stream of macerated slurry is fed via line 4 from the macerator 3 to the tank 2 to maintain a desirable solids concentration in the tank.
- the main stream of macerated slurry is fed from macerator 3 via line 5 to a continuously running decanter centrifuge 6.
- Substantially oil-free cuttings are withdrawn from the centrifuge 6 via line 7 for disposal whilst separated oil/solvent washing liquid is withdrawn via line 8. This may be recycled via line 9 to the washing tank 2 whilst a slip stream is taken off via line 10 to a distillation unit II for recovery of the solvent which is returned to the solvent storage tank 12 for re-use and separation of the oil residue via line 13.
- the oil residue separated via line 13 will contain a proportion of fines and also substantial amounts of the chemical additives added to the original drilling mud and can either be collected for disposal, treated for further recovery of one or more components and/or returned to the drilling operation for use as recycle oilbased drilling mud.
- the decontaminated drill cuttings withdrawn via line 7 are in a dry, non-sticky friable powder form suitable for pneumatic transportation in a carrier gas, e.g. air stream, to a disposal point.
- a carrier gas e.g. air stream
- the decontaminated cuttings can simply be dumped overboard since oil-contamination levels of cuttings treated in accordance with the present invention is well below the minimum standards imposed by government regulations.
- the preferred embodiment of the invention at least, provides a substantially closed cycle for the recovery and reprocessing of the oil-based drilling mud, whilst at the same time substantially solving the disposal problems of the oil-contaminated drill cuttings.
- the above described method and apparatus can readily be adapted for the recovery of the mud solids themselves, e.g. the barytes used in weighied drilling muds.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Oil contaminated drilling solids, e.g. drilling muds and drill-cuttings, are decontaminated prior to reuse or disposal by washing with a halohydrocarbon e.g. 1,1,1-trichloroethane.
Description
Method of treating oil-contaminated drill muds or cuttings prior to reuse or disposal.
This invention relates to the treatment of oil-contaminated drill solids, e.g. drilling muds or drill cuttings prior to reuse or disposal.
In subterranean and marine drilling operations using water-based drilling mud, the disposal of the driil cuttings presents little problem from the environmental or ecological point of view. In land-based operations they can be dumped or used as land in-fill at any convenient site, and in marine operations they can be dumped overboard from the drill platform for distribution over the sea bed by tidal currents. However, in many drilling operations, for example, in drilling through shale high in montmoriilonite, which undergoes expansion when contacted by an aqueous drilling mud, it is preferred to use an oil-based drilling mud, containing for example, a substantial amount of diesel oil. Oil-based muds are also preferred since, in general, they permit higher drilling rates, and also they facilitate drilling at an angle to the vertical, for example, when drilling inclined well bores which may be at anything up to 50° or 60° from the vertical or more. However, the drill cuttings from such operations present a disposal problem because of the oil contamination.
Various proposals have been made for the treatment of such oilcontaminated drill cuttings prior to disposal ranging from incineration, which is costly, and detergent washing, which is often not sufficiently effective to meet statutory requirements governing the disposal of oil-contaminated waste, or at least not at economic levels of operation.
In one such method, disclosed in European Patent Application Publication No. 0005273, the hydrocarbon values in such oil-contaminated drill cuttings are proposed to be removed by a combination of vacuum distillation and grinding by heating the cuttings under reduced pressure in a pressure vessel equipped with means for milling or shearing the drill cuttings during the heating process.
In another method disclosed in U.S. Patent No. 3 693 951 oil contaminated drill cuttings are passed on a conveyor belt through a preheater for partial drying and then to a high-intensity infrared heating chamber in which the volatile hydrocarbons are expelled from the cuttings at a surface temperature higher than the combustion point of petroleum.
The detergent washing of drilling cuttings is disclosed in U.S. Patents 3 693 733 and 3 860 019.
Yet another approach is adopted in U.5. Patent No. 4 040 866. In this proposal oil-contaminated drill cuttings are processed to remove the contaminating oil by contacting the cuttings with a mixed solvent system consisting of ethylenegiycoi monoisobutyl ether, diethylenegiycol monobutyi ether acetate, ethyl butyl ketone, ethylenegiycoi monobutylether, ethylenegiycol monom ethyl ether acetate, diethylene giycol diethyl ether or diethylene giycol mono-n-hexyl ether as the first component and paraffin oil as the second component in relative proportions of from 10:90 to 80:20. The resultant oil-solvent mixture which forms on the cuttings is readily removable by centrifuging or washing, e.g. with sea water, or a combination of the two.
In accordance with the present invention it has been found that the oil content of oil-contaminated drill cuttings can be economically and efficiently reduced to permitted levels by washing the oil-contaminated drill cuttings, preferably after screening to remove fines and supernatant drilling mud which can be re-used, with a single solvent system consisting of a haiogenated hydrocarbon such as carbon tetrachloride or 1,1,1-trichioroethane, and centrifuging the washed cuttings to remove the oil-solvent solution, which can be recycled to the washing process and/or distilled to recover the washing solvent and an oil residue which can be recycled to the drilling process.
Moreover, it has been found that washing with a single haiogenated hydrocarbon solvent, particularly, 1,1,1-trichloroethane, reduces the drill cuttings to a dry non-sticky, easily friable form which greatly facilitates subsquent transportation and dumping of the decontaminating cuttings. Thus, for example, it has been found that such decontaminated cuttings can be readily transported pneumatically by entrainment in a carrier gas stream, e.g. air. Such cuttings can therefore be readily and easily pipelined away from the drilling platform for dumping at a location remote from the drilling operation.
Whilst the invention is particularly described with reference to the decontamination of oil-contaminated drill cuttings prior to disposal, the method of the invention is also applicable to the recovery of the drilling mud itself, particularly drilling muds which are weighted with barytes. Because of the cost element, the recovery of the barytes for reuse can be an important factor in the economics of subterranean and submarine drilling operations, and the present invention provides a simple efficient and economic way in which this can be done. Thus, after screening to remove the cuttings for further decontamination treatment as described, the separated drilling mud can be treated in essentially the same way, for example, by initial screening or centrifuging to separate out the mud solids, and removing from the separated mud solids decontaminating oil by washing with the halohydrocarbon and centrifuging in the manner described.
The invention will be further described with reference to the accompanying drawing in which the single figure represents a diagrammatic flow sheet of a preferred method of treating oil-contaminated drill cuttings in accordance with this invention.
Referring to the drawings, oil-contaminated drill cuttings which have been screened to remove surplus oil-based fluids and fines for re-use in the drilling operation are passed via line 1 to a mixing tank 2. If desired a portion of the separated fines may also be passed to the tank. In the tank 2, the cuttings are contacted with an organic haiohydrocarbon solvent washing liquid, preferably 1,1,1-trichloroethane, fed from a storage tank 12. From the tank 2, the cuttings/solvent slurry is fed to a macerator and pump 3 which reduce the particle size of the cuttings to improve washing contact with the solvent. A recycle stream of macerated slurry is fed via line 4 from the macerator 3 to the tank 2 to maintain a desirable solids concentration in the tank. The main stream of macerated slurry is fed from macerator 3 via line 5 to a continuously running decanter centrifuge 6. Substantially oil-free cuttings are withdrawn from the centrifuge 6 via line 7 for disposal whilst separated oil/solvent washing liquid is withdrawn via line 8. This may be recycled via line 9 to the washing tank 2 whilst a slip stream is taken off via line 10 to a distillation unit II for recovery of the solvent which is returned to the solvent storage tank 12 for re-use and separation of the oil residue via line 13.
The oil residue separated via line 13 will contain a proportion of fines and also substantial amounts of the chemical additives added to the original drilling mud and can either be collected for disposal, treated for further recovery of one or more components and/or returned to the drilling operation for use as recycle oilbased drilling mud.
The decontaminated drill cuttings withdrawn via line 7 are in a dry, non-sticky friable powder form suitable for pneumatic transportation in a carrier gas, e.g. air stream, to a disposal point. Alternatively, in submarine operations the decontaminated cuttings can simply be dumped overboard since oil-contamination levels of cuttings treated in accordance with the present invention is well below the minimum standards imposed by government regulations.
It will be seen therefore that the preferred embodiment of the invention, at least, provides a substantially closed cycle for the recovery and reprocessing of the oil-based drilling mud, whilst at the same time substantially solving the disposal problems of the oil-contaminated drill cuttings.
As has already been stated, the above described method and apparatus can readily be adapted for the recovery of the mud solids themselves, e.g. the barytes used in weighied drilling muds.
Claims
1. A method for the treatment of oil-contaminated solids resulting from submarine and subterranean drilling operations using oil-based drilling fluids to remove oil contamination prior to disposal or reuse of those solids which comprises washing the contaminated solids with an organic solvent to remove said oil and centrifugally separating the washed solids from the solvent, characterised in that the solvent is a haiogenated hydrocarbon.
2. A method according to claim 1, characterised in that the solvent is 1,1,1- trichloroethane.
3. A method according to claim 1 or 2, which comprises agitating the oil-contaminated solids with said solvent in a closed vessel; continuously withdrawing from said vessel a first stream comprising a slurry of said solids in said solvent and a second stream of oil-contaminated solvent; feeding said slurry to a continuously running centrifuge to separate the solids from the solvent; recycling the recovered solvent stream from the centrifuge to the agitation vessel; air drying the separated solids to remove final solvent traces; fractionating the oil-solvent stream from the agitation vessel to recover an oil stream and a solvent stream; and recycling the solvent stream to the agitation vessel.
4. A method according to claim 1, 2 or 3, characterised in that the oilcontaminated solids are oil-contaminated drill cuttings.
5.. A method according to claim 1, 2 or 3, characterised in that the oilcontaminated solids are drill mud solids.
6. A method according to claim 5, characterised in that the drill mud solids is or comprise barytes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8037377801121 | 1980-11-21 | ||
| GB8037377 | 1980-11-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1982001737A1 true WO1982001737A1 (en) | 1982-05-27 |
Family
ID=10517469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/GB1981/000252 WO1982001737A1 (en) | 1980-11-21 | 1981-11-20 | Method of treating oil-contaminated drill muds or cuttings prior to reuse or disposal |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0065532A1 (en) |
| AU (1) | AU7808881A (en) |
| WO (1) | WO1982001737A1 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0136373A1 (en) * | 1983-10-06 | 1985-04-10 | FLOTTWEG-WERK DR. GEORG BRUCKMAYER GMBH & CO. KT | Process for washing drill cuttings |
| EP0334944A1 (en) * | 1987-10-05 | 1989-10-04 | Conoco Specialty Products Inc. | Apparatus and method for removing and recovering oil and/or other oil-based drilling mud additives from drill cuttings |
| WO1989009091A1 (en) * | 1988-03-25 | 1989-10-05 | Mellgren Steinar E | Process and arrangement for treating recirculated drilling mud in drilling for oil and gas |
| WO1991008375A1 (en) * | 1989-11-28 | 1991-06-13 | Rig Technology Limited | Method and apparatus for cleaning drill cuttings |
| GB2239470A (en) * | 1989-11-28 | 1991-07-03 | Rig Technology Ltd | Cleaning of cuttings from drilling operations |
| WO1991013232A2 (en) * | 1990-02-28 | 1991-09-05 | Conoco Inc. | Process and apparatus for cleaning particulate solids |
| WO1991014075A1 (en) * | 1990-02-28 | 1991-09-19 | Conoco Inc. | Process and apparatus for cleaning particulate solids |
| US5107874A (en) * | 1990-02-28 | 1992-04-28 | Conoco Inc. | Apparatus for cleaning particulate solids |
| WO1993013882A1 (en) * | 1992-01-13 | 1993-07-22 | Henkel Kommanditgesellschaft Auf Aktien | Improved method of disposal of contaminated cuttings |
| US7867399B2 (en) | 2008-11-24 | 2011-01-11 | Arkansas Reclamation Company, Llc | Method for treating waste drilling mud |
| US7935261B2 (en) | 2008-11-24 | 2011-05-03 | Arkansas Reclamation Company, Llc | Process for treating waste drilling mud |
| WO2013037978A1 (en) * | 2011-09-16 | 2013-03-21 | Montanuniversität Leoben | Recycling of borehole solids in polymers |
| CN103899262A (en) * | 2012-12-28 | 2014-07-02 | 中国石油化工股份有限公司 | Treating-while-drilling method for drilling cuttings of oil base of borehole |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB456422A (en) * | 1934-07-14 | 1936-11-09 | Standard Oil Dev Co | Improvements relating to the treatment of hydrocarbon oils with selective solvents |
| US2189844A (en) * | 1933-10-18 | 1940-02-13 | Standard Oil Dev Co | Treating mineral oil |
| FR1586065A (en) * | 1967-10-24 | 1970-02-06 | ||
| US3811614A (en) * | 1973-06-05 | 1974-05-21 | Atlantic Richfield Co | Method for centrifuging of tar sands froth |
| US3813030A (en) * | 1973-05-24 | 1974-05-28 | Atlantic Richfield Co | Method for tar sands bitumen froth treatment |
| US4040866A (en) * | 1973-10-05 | 1977-08-09 | N L Industries, Inc. | Laundering of oil base mud cuttings |
| US4120775A (en) * | 1977-07-18 | 1978-10-17 | Natomas Company | Process and apparatus for separating coarse sand particles and recovering bitumen from tar sands |
-
1981
- 1981-11-20 WO PCT/GB1981/000252 patent/WO1982001737A1/en unknown
- 1981-11-20 AU AU78088/81A patent/AU7808881A/en not_active Abandoned
- 1981-11-20 EP EP19810903108 patent/EP0065532A1/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2189844A (en) * | 1933-10-18 | 1940-02-13 | Standard Oil Dev Co | Treating mineral oil |
| GB456422A (en) * | 1934-07-14 | 1936-11-09 | Standard Oil Dev Co | Improvements relating to the treatment of hydrocarbon oils with selective solvents |
| FR1586065A (en) * | 1967-10-24 | 1970-02-06 | ||
| US3813030A (en) * | 1973-05-24 | 1974-05-28 | Atlantic Richfield Co | Method for tar sands bitumen froth treatment |
| US3811614A (en) * | 1973-06-05 | 1974-05-21 | Atlantic Richfield Co | Method for centrifuging of tar sands froth |
| US4040866A (en) * | 1973-10-05 | 1977-08-09 | N L Industries, Inc. | Laundering of oil base mud cuttings |
| US4120775A (en) * | 1977-07-18 | 1978-10-17 | Natomas Company | Process and apparatus for separating coarse sand particles and recovering bitumen from tar sands |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0136373A1 (en) * | 1983-10-06 | 1985-04-10 | FLOTTWEG-WERK DR. GEORG BRUCKMAYER GMBH & CO. KT | Process for washing drill cuttings |
| EP0334944A4 (en) * | 1987-10-05 | 1991-10-09 | Novatec, Inc. | Apparatus and method for removing and recovering oil and/or other oil-based drilling mud additives from drill cuttings |
| EP0334944A1 (en) * | 1987-10-05 | 1989-10-04 | Conoco Specialty Products Inc. | Apparatus and method for removing and recovering oil and/or other oil-based drilling mud additives from drill cuttings |
| WO1989009091A1 (en) * | 1988-03-25 | 1989-10-05 | Mellgren Steinar E | Process and arrangement for treating recirculated drilling mud in drilling for oil and gas |
| WO1991008375A1 (en) * | 1989-11-28 | 1991-06-13 | Rig Technology Limited | Method and apparatus for cleaning drill cuttings |
| GB2239470A (en) * | 1989-11-28 | 1991-07-03 | Rig Technology Ltd | Cleaning of cuttings from drilling operations |
| GB2239470B (en) * | 1989-11-28 | 1993-12-15 | Rig Technology Ltd | Cleaning of cuttings from drilling operations |
| AU644120B2 (en) * | 1989-11-28 | 1993-12-02 | Varco I/P Inc. | Method and apparatus for cleaning drill cuttings |
| US5080721A (en) * | 1990-02-28 | 1992-01-14 | Conoco Inc. | Process for cleaning particulate solids |
| WO1991013232A2 (en) * | 1990-02-28 | 1991-09-05 | Conoco Inc. | Process and apparatus for cleaning particulate solids |
| US5053082A (en) * | 1990-02-28 | 1991-10-01 | Conoco Inc. | Process and apparatus for cleaning particulate solids |
| US5107874A (en) * | 1990-02-28 | 1992-04-28 | Conoco Inc. | Apparatus for cleaning particulate solids |
| WO1991013232A3 (en) * | 1990-02-28 | 1991-10-03 | Conoco Inc | Process and apparatus for cleaning particulate solids |
| WO1991014075A1 (en) * | 1990-02-28 | 1991-09-19 | Conoco Inc. | Process and apparatus for cleaning particulate solids |
| AU665050B2 (en) * | 1992-01-13 | 1995-12-14 | Baroid Limited | Disposal of contaminated cuttings |
| WO1993013882A1 (en) * | 1992-01-13 | 1993-07-22 | Henkel Kommanditgesellschaft Auf Aktien | Improved method of disposal of contaminated cuttings |
| US5755892A (en) * | 1992-01-13 | 1998-05-26 | Henkel Kommanditgesellschaft Auf Aktien | Waste disposal of contaminated drill cuttings from geological drilling using drilling fluid systems containing mineral oil |
| US7867399B2 (en) | 2008-11-24 | 2011-01-11 | Arkansas Reclamation Company, Llc | Method for treating waste drilling mud |
| US7935261B2 (en) | 2008-11-24 | 2011-05-03 | Arkansas Reclamation Company, Llc | Process for treating waste drilling mud |
| WO2013037978A1 (en) * | 2011-09-16 | 2013-03-21 | Montanuniversität Leoben | Recycling of borehole solids in polymers |
| US9464180B2 (en) | 2011-09-16 | 2016-10-11 | Montanuniversität Leoben | Recycling of borehole solids in polymers |
| EA029152B1 (en) * | 2011-09-16 | 2018-02-28 | Монтануниверзитет Леобен | Method of fabricating a composite material |
| CN103899262A (en) * | 2012-12-28 | 2014-07-02 | 中国石油化工股份有限公司 | Treating-while-drilling method for drilling cuttings of oil base of borehole |
Also Published As
| Publication number | Publication date |
|---|---|
| AU7808881A (en) | 1982-06-07 |
| EP0065532A1 (en) | 1982-12-01 |
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