CN101811127A - Method for quickly removing petroleum hydrocarbon components in drilling cuttings - Google Patents
Method for quickly removing petroleum hydrocarbon components in drilling cuttings Download PDFInfo
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- CN101811127A CN101811127A CN200910009392A CN200910009392A CN101811127A CN 101811127 A CN101811127 A CN 101811127A CN 200910009392 A CN200910009392 A CN 200910009392A CN 200910009392 A CN200910009392 A CN 200910009392A CN 101811127 A CN101811127 A CN 101811127A
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- drilling cuttings
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Abstract
The invention discloses a new method for quickly removing petroleum hydrocarbon components in drilling cuttings. The method meets the environmental-friendly requirements of discharging the drilling cuttings by quickly removing oiliness of oil base, synthetic base water-in-oil and oil-in-water drilling fluid drilling cuttings with supercritical fluid. The supercritical fluid flows through the oil-bearing drilling cuttings and continuously cycles at appropriate temperature and under appropriate pressure; and hydrocarbons in the drilling cuttings can be extracted after a certain time by using a supercritical fluid extracting device. The method has over 95 percent of extraction efficiency by adding an entraining agent into the supercritical fluid to extract the oil-bearing drilling cuttings. The method can be widely used for quickly removing the oil-bearing drilling cuttings of petroleum drilling.
Description
Technical field
The invention belongs to environmental protection petroleum hydrocarbon components in drilling cuttings method for quickly eliminating in the oil drilling.
Background technology
In oil/gas drilling, drilling fluid is essential, and it can clean well, lubricated drill bit.Because the natural lubricity height of non-water-base drilling fluid is strong to clay and shale inhibition, so be better than water-base drilling fluid, it is usually indispensable to bore complicated well, but costs an arm and a leg, because contain hydrocarbon, the drilling cuttings that produces is easy to contaminated environment, so must handle.
Now developed the technology of the drilling cuttings of the non-water-base drilling fluid generation of several processing.These comprise biodegradation techniques such as soil cultivating, clean technologies such as burning or solvent clean.Solvent clean is a kind of effective method, but will use gasoline etc. to extract as solvent.Along with environmental protection law increasingly stringent, common treatment technology cost constantly increases, and well drilling industry is just constantly sought the new method of handling non-water-base drilling fluid drilling cuttings.
Summary of the invention
The objective of the invention is to reach the environmental emission requirement in order better to remove the petroleum hydrocarbon components that the discarded drilling cuttings of drilling well is adhered to.Its purpose is exactly the method that provides a kind of drill cuttings petroleum hydrocarbon components to remove fast for oil drilling.
The present invention is achieved in that and earlier the drilling well refuse of known weight is placed on 5 li of stainless steel extraction containers.Extraction container rises to the experimental temperature of requirement.Piston pump 4 is pressurized to operating pressure to liquid CO 2 from gas cylinder 1.The carbon dioxide of pressurization is sent into the extraction kettle 5 of heating then.Drilling cuttings and supercritical carbon dioxide mixing certain hour are opened outlet valve then, and the hydrocarbon mixture of supercritical carbon dioxide and extraction flows out extraction kettle, flow through separating still 8 and 9.Supercritical carbon dioxide is expanded to the gas under the atmospheric pressure after by metering valve.Carbon dioxide is back to ice chest 3, becomes to enter the piston pump pressurization behind the liquid once more, forms the circulation of carbon dioxide.Carbon dioxide can add small amount of acetone, increases effect of extracting.The hydro carbons that extracts is collected in the sample bottle.After extraction is finished, the complete release of system, extraction kettle is opened, and the drilling cuttings that stays collects analysis.
Advantage of the present invention: low price is easy to get; Do not have toxicity, do not burn; Critical point 7.4MPa, reaches easily by 31 ℃; There is not hazard residue; Can be widely used in the work of treatment of waste drilling thing.
Description of drawings
Fig. 1 represents the carbon dioxide supercritical extraction device of oil-contained drilling cuttings
The specific embodiment
Example one: below in conjunction with Figure of description 1, the invention will be further described.
1. get a certain amount of on-the-spot oil-base mud drilling cuttings (50 gram) (oil content 55%), put into 400mL stainless steel extraction kettle (5) lining.
2. the stainless steel lid of container seals with the torque spanner bolting.
3. extraction kettle (5) rises to the experimental temperature (50 ℃) of requirement.
4. two piston pumps (4), continued operation is pressurized to operating pressure (30MPa) to liquid CO 2 from ice chest (3).Carbon dioxide steel cylinder (1) replenishes carbon dioxide.The carbon dioxide of pressurization is sent into the extraction kettle (5) of heating then.Heater (6) is used to heat the carbon dioxide of flowing through.Pump into certain quantity of additive (1%), acetone from additive bottle (2) simultaneously.In blender (7) with carbon dioxide mix.
5. drilling cuttings and supercritical carbon dioxide mixed 15 minutes, and outlet valve is closed, and supercritical carbon dioxide is immobilising (resting stage).
6. outlet valve is opened then, the hydrocarbon mixture flow container of supercritical carbon dioxide and extraction 40 minutes (flow periods).Piston pump makes and keeps constant compression force between flow periods.Mobile is to control by the metering valve of outlet line.
7. supercritical carbon dioxide is expanded to gas under the atmospheric pressure at separating still (8) and separating still (9) after by metering valve.The oils that extracts no longer is dissolved in the carbon dioxide of gas phase.Oils is collected in the sample bottle.Weigh, calculate extraction efficiency.
8. after extraction is finished, the complete release of system, container is opened, and the drilling cuttings solid collection that stays gets up to analyze.The discovery effect of extracting is fine, and drilling cuttings is all dry.
Experimental result shows, when refuse quality 50 grams, and mixing velocity 50rpm, when additive was acetone, extraction efficiency reached 98.1, handled the back solid drying, and oil content is low.
Example two: below in conjunction with Figure of description 1, the invention will be further described.
1. get a certain amount of on-the-spot oil-base mud drilling cuttings (100 gram) (oil content 55%), put into 400mL stainless steel extraction kettle (5) lining.
2. the stainless steel lid of container seals with the torque spanner bolting.
3. extraction kettle (5) rises to the experimental temperature (50 ℃) of requirement.
4. two piston pumps (4), continued operation is pressurized to operating pressure (30MPa) to liquid CO 2 from ice chest (3).Carbon dioxide steel cylinder (1) replenishes carbon dioxide.The carbon dioxide of pressurization is sent into the extraction kettle (5) of heating then.Heater (6) is used to heat the carbon dioxide of flowing through.Pump into certain quantity of additive (1%), acetone from additive bottle (2) simultaneously.In blender (7) with carbon dioxide mix.
5. drilling cuttings and supercritical carbon dioxide mixed 15 minutes, and outlet valve is closed, and supercritical carbon dioxide is immobilising (resting stage).
6. outlet valve is opened then, the hydrocarbon mixture flow container of supercritical carbon dioxide and extraction 40 minutes (flow periods).Piston pump makes and keeps constant compression force between flow periods.Mobile is to control by the metering valve of outlet line.
7. supercritical carbon dioxide is expanded to gas under the atmospheric pressure at separating still (8) and separating still (9) after by metering valve.The oils that extracts no longer is dissolved in the carbon dioxide of gas phase.Oils is collected in the sample bottle.Weigh, calculate extraction efficiency.
8. after extraction is finished, the complete release of system, container is opened, and the drilling cuttings solid collection that stays gets up to analyze.The discovery effect of extracting is fine, and drilling cuttings is all dry.
Experimental result shows, when the refuse quality is 100 grams, and mixing velocity 50rpm, when additive was acetone, extraction efficiency reached 97.1, handled the back solid drying, and oil content is low.
Example three: below in conjunction with Figure of description 1, the invention will be further described.
1. get a certain amount of on-the-spot oil-base mud drilling cuttings (100 gram) (oil content 55%), put into 400mL stainless steel extraction kettle (5) lining.
2. the stainless steel lid of container seals with the torque spanner bolting.
3. extraction kettle (5) rises to the experimental temperature (50 ℃) of requirement.
4. two piston pumps (4), continued operation is pressurized to operating pressure (30MPa) to liquid CO 2 from ice chest (3).Carbon dioxide steel cylinder (1) replenishes carbon dioxide.The carbon dioxide of pressurization is sent into the extraction kettle (5) of heating then.Heater (6) is used to heat the carbon dioxide of flowing through.Pump into certain quantity of additive (1%), acetone from additive bottle (2) simultaneously.In blender (7) with carbon dioxide mix.
5. drilling cuttings and supercritical carbon dioxide mixed 15 minutes, and outlet valve is closed, and supercritical carbon dioxide is immobilising (resting stage).
6. outlet valve is opened then, the hydrocarbon mixture flow container of supercritical carbon dioxide and extraction 40 minutes (flow periods).Piston pump makes and keeps constant compression force between flow periods.Mobile is to control by the metering valve of outlet line.
7. supercritical carbon dioxide is expanded to gas under the atmospheric pressure at separating still (8) and separating still (9) after by metering valve.The oils that extracts no longer is dissolved in the carbon dioxide of gas phase.Oils is collected in the sample bottle.Weigh, calculate extraction efficiency.
8. after extraction is finished, the complete release of system, container is opened, and the drilling cuttings solid collection that stays gets up to analyze.The discovery effect of extracting is fine, and drilling cuttings is all dry.
Experimental result shows, when the refuse quality is 150 grams, and mixing velocity 50rpm, when additive was acetone, extraction efficiency reached 95.2, handled the back solid drying, and oil content is low.
Claims (4)
1. the method for a quickly removing petroleum hydrocarbon components in drilling cuttings, it is characterized in that removing fast the oil-containing of oil base, synthetic base, Water-In-Oil and oil-in-water drilling fluid drilling cuttings by supercritical fluid, reach environmental protection drilling cuttings emission request, use supercritical fluid extraction equipment, under proper temperature and pressure, the supercritical fluid oil-contained drilling cuttings of flowing through, supercritical fluid be constantly circulation again, through behind the certain hour, the hydro carbons in the drilling cuttings just can be extracted and remove.
2. the new method of a kind of quickly removing petroleum hydrocarbon components in drilling cuttings according to claim 1 is characterized in that supercritical fluid is a carbon dioxide.
3. the new method of a kind of quickly removing petroleum hydrocarbon components in drilling cuttings according to claim 1 is characterized in that adding in the supercritical fluid additive, and additive is an acetone.
4. the new method of a kind of quickly removing petroleum hydrocarbon components in drilling cuttings according to claim 1, it is characterized in that carbon dioxide (1) process ice chest is (after 3 coolings, pressurize through piston pump (4), after reaching the supercritical fluid state by heater (6) heating, mix with additive acetone (2), enter the extraction kettle (5) that oil-contained drilling cuttings is housed, after after a while, discharge the Co 2 supercritical fluid of the liquid such as oils that carry dissolving in separating still (8) and (9), stay dried drilling cuttings in the extraction kettle, liquid phases such as the oils of separation reclaim.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910009392A CN101811127A (en) | 2009-02-23 | 2009-02-23 | Method for quickly removing petroleum hydrocarbon components in drilling cuttings |
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| CN200910009392A CN101811127A (en) | 2009-02-23 | 2009-02-23 | Method for quickly removing petroleum hydrocarbon components in drilling cuttings |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028223A (en) * | 2012-12-28 | 2013-04-10 | 中国石油集团川庆钻探工程有限公司 | Simulation biodegradation method of synthetic base drilling fluid and drill cuttings |
| CN104849172A (en) * | 2014-02-18 | 2015-08-19 | 中国石油化工股份有限公司 | Oil shale oil content test experiment apparatus and test method thereof |
| CN104946291A (en) * | 2015-06-05 | 2015-09-30 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Method for treating drill cuttings through supercritical CO2 extraction |
| CN105618460A (en) * | 2015-12-30 | 2016-06-01 | 西南科技大学 | Degradation and solidification integrated treatment method for drillings containing oil |
| CN105733640A (en) * | 2016-03-16 | 2016-07-06 | 中国石油大学(华东) | Treatment method of waste oil-based drilling fluid |
| CN108409075A (en) * | 2018-03-23 | 2018-08-17 | 李凡 | A kind of oil base drilling wastes supercritical fluid extraction separating treatment system and method |
| CN110451745A (en) * | 2019-07-10 | 2019-11-15 | 合肥通用机械研究院有限公司 | A kind of oil base drilling wastes supercritical processing system |
| CN111410981A (en) * | 2019-01-07 | 2020-07-14 | 中国石油天然气股份有限公司 | Supercritical CO with entrainer assistance2Method for extracting oil in drilling waste |
| CN115261051A (en) * | 2022-06-24 | 2022-11-01 | 重庆工商大学 | Extraction method and equipment for oil-based drilling cuttings |
-
2009
- 2009-02-23 CN CN200910009392A patent/CN101811127A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028223A (en) * | 2012-12-28 | 2013-04-10 | 中国石油集团川庆钻探工程有限公司 | Simulation biodegradation method of synthetic base drilling fluid and drill cuttings |
| CN103028223B (en) * | 2012-12-28 | 2015-03-25 | 中国石油集团川庆钻探工程有限公司 | Simulation biodegradation method of synthetic base drilling fluid and drill cuttings |
| CN104849172A (en) * | 2014-02-18 | 2015-08-19 | 中国石油化工股份有限公司 | Oil shale oil content test experiment apparatus and test method thereof |
| CN104849172B (en) * | 2014-02-18 | 2017-08-04 | 中国石油化工股份有限公司 | Oil content of oil shale experimental apparatus for testing and its method of testing |
| CN104946291A (en) * | 2015-06-05 | 2015-09-30 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Method for treating drill cuttings through supercritical CO2 extraction |
| CN105618460A (en) * | 2015-12-30 | 2016-06-01 | 西南科技大学 | Degradation and solidification integrated treatment method for drillings containing oil |
| CN105733640A (en) * | 2016-03-16 | 2016-07-06 | 中国石油大学(华东) | Treatment method of waste oil-based drilling fluid |
| CN108409075A (en) * | 2018-03-23 | 2018-08-17 | 李凡 | A kind of oil base drilling wastes supercritical fluid extraction separating treatment system and method |
| CN111410981A (en) * | 2019-01-07 | 2020-07-14 | 中国石油天然气股份有限公司 | Supercritical CO with entrainer assistance2Method for extracting oil in drilling waste |
| CN110451745A (en) * | 2019-07-10 | 2019-11-15 | 合肥通用机械研究院有限公司 | A kind of oil base drilling wastes supercritical processing system |
| CN110451745B (en) * | 2019-07-10 | 2021-11-23 | 合肥通用机械研究院有限公司 | Oil-based drilling waste supercritical treatment system |
| CN115261051A (en) * | 2022-06-24 | 2022-11-01 | 重庆工商大学 | Extraction method and equipment for oil-based drilling cuttings |
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Open date: 20100825 |