CN101723427A - Method for resource utilization of oil production sludge of oilfield - Google Patents
Method for resource utilization of oil production sludge of oilfield Download PDFInfo
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- CN101723427A CN101723427A CN200910242182A CN200910242182A CN101723427A CN 101723427 A CN101723427 A CN 101723427A CN 200910242182 A CN200910242182 A CN 200910242182A CN 200910242182 A CN200910242182 A CN 200910242182A CN 101723427 A CN101723427 A CN 101723427A
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- calcium oxide
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Abstract
The invention relates to a method for resource utilization of oil production sludge of an oilfield, and the method comprises the following steps: firstly decomposing a small quantity of hydrocarbons contained in the oil production sludge of the oilfield at the temperature of 300 DEG C-500 DEG C for generating low molecular hydrocarbons and carbon dioxide, simultaneously removing water contained therein by evaporation, further increasing the temperature to 898-900 DEG C, calcining, generating mixture containing calcium oxide and the carbon dioxide, leading the carbon dioxide to pass through collection/pressurization/injection devices for being injected into an oil well for gas injection oil production, using water for dissolving the mixture containing the calcium oxide, generating calcium oxide water solution with pH of 14 and a small quantity of sediment, using the calcium oxide water solution for oilfield water treatment and construction material, emitting the small quantity of the sediment by achieving the standard, generating the calcium oxide and the carbon dioxide which can be utilized through high-temperature calcination, only remaining 12% of residues after treatment, being capable of achieving the emission standard and realizing the thorough eradication of the sludge.
Description
Technical field:
The present invention relates to the method for the oil production sludge of oilfield recycling of the environment protection of a kind of oil field, solid waste resource recovery utilization.
Background technology:
Oil exploitation sludge is the by product that the oil recovery factory produces in oil recovery process, and this by product is forbidden emission of substance owing to contain oil etc., thereby stacks in the oil recovery factory, accumulates over a long period and is piled into the mountain, day by day the ecotope in zone, serious harm oil recovery factory.
Oil exploitation sludge presents different states of matters and characteristic (such as thin oil mud and heavy crude oily sludge etc.) with different oil properties, oil reservoir feature, thereby shows different difficulty in treatment.At present, China scientific and technical personnel have done a large amount of exploratory development work to the recycling of all kinds of mud, and some technology mass-producing is used.
But for the Zhongyuan Oil Field with this class oil quality of some oil recovery factory, Xinjiang is light, oleaginousness is few, emulsification is not serious but contain the mud of a large amount of fine inorganic particles, also there is not the good treatment method at present.
The existing investigative technique of such mud has:
(1), re-injection disused well: this method is the treatment process that a plurality of oil recovery factories, Zhongyuan Oil Field adopt at present.This method is to pump into disused well behind the mud dilute with water, because the continuous migration of subterranean oil, disused well may become producing well in the future, so the shortcoming of this method is the oil recovery potentiality layer that the mud that pumps into is easy to stop up disused well; Simultaneously, this method also causes the invalid circulation of water and the consumption of electric power
(2), make the compound of rubber tyre: contain the higher characteristics of fine powder body calcium carbonate quantity according to middle primary sludge, the widespread use of incorporating ultrafine lime carbonate and tire propose mud directly as the rubber tyre additive the less demanding characteristics of the colourity of calcium carbonate additive.This method is Success in Experiment, studies show that, this mud is fit to do the rubber tyre additive through certain processing.But through adjusting:, also only can consume the seldom part of whole Zhongyuan Oil Field mud even the rubber tyre in the whole nation is all used this additive.
(3), make profile-controlling and plugging agent: this method bibliographical information is a lot, and be the main path that present Zhongyuan Oil Field consumes part mud, this method is to adopt the certain additive of interpolation that mud is made profile control and water plugging liquid, is used for macropore plugging behind the injection oil reservoir and adjusts the water drive section reaching the purpose that improves oil recovery rate.But, make it can only form the utilization of part to whole extraction mud because the sludge quantity that the annual profile control and water plugging in Zhongyuan Oil Field needs is far smaller than the sludge quantity that annual Zhongyuan Oil Field produces.
(4), make building materials with brick with pave the way: the research report is arranged, make building brick with this oil exploitation sludge.Brick has been fired success, but brick stability do not reach, and not attractive in appearance, and blackout fails to promote.
Simultaneously, stretch had also once been repaiied with this mud in the Zhongyuan Oil Field, but because oil-containing wherein is difficult for processing, and make the road surface of being repaiied feel like jelly, be unable to undergo to roll, can't promote.
Summary of the invention:
The objective of the invention is to utilize the high characteristic calciferous of oil exploitation sludge, adopt the method for high-temperature roasting that 82% calcination of calcium carbonate in the mud is become useful calcium oxide and carbonic acid gas, realize the recycling treatment of such mud; Reach such mud of thorough solution and pile up and get more and more, easily form the situation of dust pollution environment for a long time in the oil recovery factory.
The present invention utilizes oil production sludge of oilfield to contain a large amount of lime carbonate and a kind of treatment process of adopting.The process of this method employing temperature programming is progressively decomposed material wherein, reaches the purpose of recycling.At first oil production sludge of oilfield is decomposed wherein contained a small amount of hydro carbons under 300 ℃ of-500 ℃ of temperature, make it generate low molecular hydrocarbon class and carbonic acid gas, contained moisture is removed in evaporation simultaneously; And then elevated temperature generates the mixture and the carbonic acid gas that contain calcium oxide to 898-900 ℃ of calcining; The mixture that will contain calcium oxide is used for oil-field water and handles and material of construction with the calcium oxide aqueous solution that water dissolution generation pH is 14; Carbonic acid gas by collect pressurization injection device inject oil well and be used as gas injection and recover the oil.Realize this method must have high-temperature calcination stove and carbon dioxide collection pressurization injection device.The key element of this invention is method generation available calcium oxide in oil field and the carbonic acid gas by high-temperature calcination.
Calcium oxide that this method produced and carbonic acid gas all can be again in field use: 1 〉, the Zhongyuan Oil Field produced water disposal need be used a lot of calcium oxide; 2〉carbonic acid gas that is produced all can inject oil reservoir and is used to improve recovery ratio.3 〉, oil-field water handle exhaustless calcium oxide can be used for the building and building materials.Method can realize the mud problem that radical processing is piled up throughout the year thus.
Generate calcium oxide and carbonic acid gas by high-temperature calcination, can produce pH with water dissolution is 14 the aqueous solution, obtains available calcium oxide aqueous solution, and the residuum after the processing only has 12%, and has reached emission standard, thereby can realize the thorough elimination of such mud.
Specific embodiment
Embodiment 1
Get 10 gram oil exploitation sludges, placed 300 ℃ of roasting temperatures 30 minutes, remaining 4.2 grams are yellow dewatered sludge, again 4.2 gram dewatered sludges are put into the 900 retort furnace roastings of spending 30 minutes, can obtain containing the mixture of calcium oxide, with the water-soluble pH of obtaining of this calcium oxide mixture is 14 the aqueous solution, and this aqueous solution can be used for oil-field water to be handled; Also contain 12% throw out in this aqueous solution, throw out reaches emission standard by analysis can abandon it.Wherein the carbonic acid gas of being emitted must be collected in special device, utilize.
Embodiment 2
Get 50 gram oil exploitation sludges, placed 500 ℃ of roasting temperatures 5 minutes, remaining 20 grams are yellow dewatered sludge, again 20 gram dewatered sludges are put into the 900 retort furnace roastings of spending 30 minutes, can obtain containing the mixture of calcium oxide, with the water-soluble pH of obtaining of this calcium oxide mixture is 14 the aqueous solution, and this aqueous solution can be used for oil-field water to be handled; Also contain the throw out of 6 grams in this aqueous solution, throw out can reach emission standard by analysis.
Claims (1)
1. the method for an oil production sludge of oilfield recycling, it is characterized in that: at first oil production sludge of oilfield is decomposed wherein contained a small amount of hydro carbons under 300 ℃ of-500 ℃ of temperature, make it generate low molecular hydrocarbon class and carbonic acid gas, contained moisture is removed in evaporation simultaneously; And then elevated temperature is calcined and is generated mixture and the carbonic acid gas that contains calcium oxide to 898-900 ℃; Carbonic acid gas by collect pressurization injection device inject oil well and be used as gas injection and recover the oil; It is 14 calcium oxide aqueous solution and small amount of precipitate thing that the mixture that will contain calcium oxide generates pH with water dissolution, and calcium oxide aqueous solution is used for oil-field water and handles and material of construction small amount of precipitate thing qualified discharge.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102421822A CN101723427B (en) | 2009-12-09 | 2009-12-09 | Method for resource utilization of oil production sludge of oilfield |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102421822A CN101723427B (en) | 2009-12-09 | 2009-12-09 | Method for resource utilization of oil production sludge of oilfield |
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| Publication Number | Publication Date |
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| CN101723427A true CN101723427A (en) | 2010-06-09 |
| CN101723427B CN101723427B (en) | 2011-05-25 |
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| CN2009102421822A Active CN101723427B (en) | 2009-12-09 | 2009-12-09 | Method for resource utilization of oil production sludge of oilfield |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935031A (en) * | 2010-06-25 | 2011-01-05 | 中国石油天然气集团公司 | Method for separating and recovering carbon from pyrolysis residue of sludge containing oil |
| CN108689800A (en) * | 2017-03-30 | 2018-10-23 | 易科菲尔株式会社 | Utilize the oxygenated hydrocarbon preparation method of organic pollution materials |
| CN109761471A (en) * | 2018-12-10 | 2019-05-17 | 唐山冀油瑞丰化工有限公司 | Continuous ultrasound couples critical coprocessing oily sludge/sewage method and apparatus |
| CN111362561A (en) * | 2020-03-25 | 2020-07-03 | 北京城市排水集团有限责任公司 | Method for resource utilization of sludge |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298656C (en) * | 2004-08-03 | 2007-02-07 | 中国地质大学（武汉） | Method for preparing cement clinker with oil field oil-containing calcium sludge |
| CN1850368A (en) * | 2006-05-19 | 2006-10-25 | 青岛科技大学 | Treatment method and use of oil-fied high-calcium oil-mud to be convented into resource |
| CN100513337C (en) * | 2006-07-28 | 2009-07-15 | 中国石油天然气股份有限公司 | Resource treating method for oil-containing sludge |
-
2009
- 2009-12-09 CN CN2009102421822A patent/CN101723427B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935031A (en) * | 2010-06-25 | 2011-01-05 | 中国石油天然气集团公司 | Method for separating and recovering carbon from pyrolysis residue of sludge containing oil |
| CN101935031B (en) * | 2010-06-25 | 2012-01-11 | 中国石油天然气集团公司 | Method for separating and recovering carbon from pyrolysis residue of sludge containing oil |
| CN108689800A (en) * | 2017-03-30 | 2018-10-23 | 易科菲尔株式会社 | Utilize the oxygenated hydrocarbon preparation method of organic pollution materials |
| CN109761471A (en) * | 2018-12-10 | 2019-05-17 | 唐山冀油瑞丰化工有限公司 | Continuous ultrasound couples critical coprocessing oily sludge/sewage method and apparatus |
| CN111362561A (en) * | 2020-03-25 | 2020-07-03 | 北京城市排水集团有限责任公司 | Method for resource utilization of sludge |
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| Publication number | Publication date |
|---|---|
| CN101723427B (en) | 2011-05-25 |
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