CN110791270A - Oil stain cleaning agent for organic oil-gas well and use method thereof - Google Patents
Oil stain cleaning agent for organic oil-gas well and use method thereof Download PDFInfo
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- CN110791270A CN110791270A CN201910942961.7A CN201910942961A CN110791270A CN 110791270 A CN110791270 A CN 110791270A CN 201910942961 A CN201910942961 A CN 201910942961A CN 110791270 A CN110791270 A CN 110791270A
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- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/10—Nanoparticle-containing well treatment fluids
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Abstract
The invention discloses an oil stain cleaning agent for an organic oil-gas well, which comprises the following components: 37% of deionized water, 4.0% of surfactant, 19% of mutual solvent, 15% of inorganic builder and 25% of decomposer; the mutual solvent comprises a mutual solvent forming agent and a mutual solvent reaction agent; the mutual soluble forming agent is one or more of ruthenium, palladium, platinum, rubidium and cesium solution; the mutual-soluble reactant adopts ethylene oxide and absolute ethyl alcohol; the decomposing agent comprises titanium dioxide powder and a bacillus subtilis complexing agent; the invention also provides a use method of the oil stain cleaning agent for the organic oil-gas well, which comprises the following steps: s1 material selection, S2 mixed reagent, S3 sample configuration, S4 cleaning detection and S5 efficiency calculation. The invention has the beneficial effects that: the nano carbon is adopted to load the mutual-soluble forming agent, so that the forming agent can conveniently permeate into an oil layer; titanium dioxide is loaded with the bacillus subtilis complex complexing agent, and substances which are difficult to decompose after the degradation reaction is completed achieve the purpose of harmlessness and environmental protection.
Description
Technical Field
The invention relates to the field of oil stain cleaning of engine oil and gas wells, in particular to an oil stain cleaning agent for an organic oil and gas well and a use method thereof.
Background
Organic oil gas well is in exploitation oil gas process, because the platform, well inner wall often receive matters such as viscous oil to erode, form the compact plugging layer easily, and then make the pipeline taper, so not only influence oil transportation speed, also can cause the waste, cause the pipeline to break even when serious, serious accidents such as explosion. The existing oil and gas well cleaning agent mostly adopts a surfactant which is difficult to decompose or a chemical agent which has great harm to the environment, when the chemical agents are not completely reacted, the chemical agents easily generate great influence on low rock stratum soil, and then the underground structure of the oil and gas well is changed, meanwhile, the cleaning agent is easy to block at the blockage position of the oil and gas well, so that the cleaning efficiency is influenced, and the construction period is delayed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an oil stain cleaning agent for an organic oil-gas well and a using method thereof, so as to at least achieve the aims of quickly removing pipeline dirt and being harmless to the environment.
The purpose of the invention is realized by the following technical scheme: an oil stain cleaning agent for an organic oil-gas well comprises the following components: deionized water, surfactant, mutual solvent, inorganic builder and decomposer; the surfactant is alkylphenol ethoxylates and organosilicate; the mutual solvent comprises a mutual solvent forming agent and a mutual solvent reaction agent; the mutual soluble forming agent is one or more of ruthenium, palladium, platinum, rubidium and cesium solution; the mutual-soluble reactant adopts ethylene oxide and absolute ethyl alcohol; the inorganic builder is selected from one or more of sodium bicarbonate, sodium carbonate and sodium hydroxide; the decomposing agent comprises titanium dioxide powder and a bacillus subtilis complexing agent.
Preferably, the superfine ground nano-scale titanium dioxide powder is used for facilitating the sufficient mixing of titanium dioxide and the bacillus subtilis complexing agent, and simultaneously serving as a material for supporting oil stain holes of a well wall, so that the cleaning agent can flow sufficiently in an oil and gas well and remove oil stain impurities.
Preferably, the bacillus subtilis composite reagent adopts bacillus subtilis, a prion-producing yeast and COD degrading bacteria including LX-2 and LX-10 type bacteria, and fatty acid in the oil stain removing process is fully degraded through the fermentation process of the bacteria, and meanwhile, surfactants and hydrocarbons which are not easy to remove can be removed.
Preferably, the mutual soluble forming agent is prepared by carrying one or more molecules of ruthenium, palladium, platinum, rubidium and cesium solution on nano carbon or nano silicon, and preparing into powder for utilization.
Preferably, the mass percentages of the deionized water, the surfactant, the mutual solvent, the inorganic builder and the decomposer are respectively 35-40%, 3.5-5.5%, 10-20%, 10-15% and 25-30%.
Preferably, the mass fraction of the mutual soluble forming agent and the mutual soluble reactant in the mutual solvent is 5-10% and 80-95%.
The invention also provides a use method of the oil stain cleaning agent for the organic oil-gas well, which comprises the following steps:
s1 raw material selection: selecting 0# diesel oil, organic soil, Span-80, calcium oxide CaO, 25% calcium chloride solution, asphalt, clear water, a corrosion pendant, petroleum ether and absolute ethyl alcohol.
S2 reagent mix: the surfactant, the mutual solvent and the inorganic builder are uniformly mixed and dissolved in an organic solvent to form a mixed solution, and meanwhile, the decomposer is dissolved in deionized water for later use;
s3 sample configuration: a. preparing standard solution: measuring 320ml of 0# diesel oil in S1, placing the 0# diesel oil in a stirrer loaded at 11000 +/-300 rpm, stirring, respectively and sequentially adding 12.0g of organic soil under the condition of not stopping the stirrer, injecting 16.0ml of Span-80 into an injector, adding 4.0g of calcium oxide, stirring at a high speed for 10min, slowly adding 80ml of calcium chloride solution under the condition of not stopping the stirrer, then adding 24g of asphalt, and stirring at a high speed for 30 min; b. sample slurry preparation: measuring 80ml of clear water in S1 in a beaker, adding 4.0ml of the oil stain cleaning agent for the organic oil-gas well under the stirring of 1000 +/-300 rpm of load, measuring 20ml of standard test solution without stopping a stirrer, adding the standard test solution into the beaker, and stirring at a low speed for 2 min; pouring the sample slurry into a measuring cylinder, and measuring the time for separating out 20% clear water (16 ml);
s4 cleaning and detecting: a. treating the corrosion coupon in the step S1 according to a corrosion inhibitor performance evaluation method for oilfield produced water, and maintaining constant weight; b. the corrosion hanging piece is sleeved with a thin nylon rope for hanging conveniently, and the constant weight of the corrosion hanging piece bound with the nylon rope is marked as M0(ii) a c. The oil stain cleaning agent for the organic oil-gas well is prepared into 1000ml of solution with the mass fraction of 10% for standby; d. suspending the corrosion hanging piece bound with the nylon rope on a titration frame, immersing the corrosion hanging piece in a beaker filled with the mixed solution in the S1, ensuring that the immersion height of the nylon rope is not more than 1cm, adding the corrosion hanging piece into the S1 after reacting for 10minStanding for 5min, lifting the corrosion coupon, slightly contacting the corrosion coupon with the inner wall of the beaker to facilitate liquid drops to flow down, naturally drying for 2-3h until no liquid drops on the corrosion coupon, weighing the corrosion coupon bound with the nylon rope, and recording the weight of the corrosion coupon as M1(ii) a d. Immersing the corrosion hanging piece bound with the nylon rope in a container filled with thick oil with the apparent viscosity of more than 120mPa & s at room temperature for 1h, ensuring that the immersion height of the nylon rope is not more than 1cm, airing for 2-3h at room temperature until the corrosion hanging piece does not drip, and weighing the weight M of the corrosion hanging piece polluted by the thick oil2。
And S5, calculating the data recorded in S4 according to a cleaning efficiency formula to obtain the cleaning efficiency of the oil stain cleaning agent for the organic oil-gas well.
Preferably, the rotation speed of 4000r/min is adopted for high-speed stirring in the S3, and the rotation speed of 800r/min is adopted for low-speed stirring, so that the substances in the standard solution and the sample slurry are conveniently and fully mixed uniformly.
The invention has the beneficial effects that:
1. through adopting the proppant that mutually dissolves the forming agent and act as the downthehole washing passageway of oil gas well oil, prevent that the cleaner from blockking up, adopt the nanocarbon to load mutually dissolving the forming agent simultaneously, more make things convenient for the forming agent to permeate into the oil reservoir.
2. By adopting the inorganic builder and the saponification reaction, the cleaning agent is matched with the mutual solvent, so that the oil stain is fully cleaned by the cleaning agent.
3. Titanium dioxide is loaded with bacillus subtilis, candida utilis and COD degrading bacteria comprising LX-2 and LX-10 type bacteria, and the characteristics of degrading fatty acid, surfactant, hydrocarbon, phenolic compounds, ketone and partial organic matters are utilized to degrade alkylphenol polyvinyl ether and ethylene oxide which are difficult to decompose after the reaction is finished, so that the aims of harmlessness and environmental protection are fulfilled.
Detailed Description
The technical solutions of the present invention are described in further detail below, but the scope of the present invention is not limited to the following.
An oil stain cleaning agent for an organic oil-gas well comprises the following components: 37% of deionized water, 4.0% of surfactant, 19% of mutual solvent, 15% of inorganic builder and 25% of decomposer; the surfactant is alkylphenol ethoxylates which can fully emulsify the grease in the oil-gas well; the mutual solvent comprises 7% of mutual solvent forming agent and 93% of mutual solvent reaction agent; the mutual soluble forming agent adopts a platinum, rubidium and cesium solution carried by nano carbon as a supporting material for the cleaning agent to pass through the oil hole; the mutual-soluble reactant adopts ethylene oxide and absolute ethyl alcohol; the inorganic builder is selected from sodium bicarbonate and sodium carbonate, and the grease can be fully dissolved in the cleaning agent solution through the saponification reaction between the sodium bicarbonate and the grease and the sodium carbonate; the decomposing agent comprises titanium dioxide powder and a bacillus subtilis complexing agent; the bacillus subtilis complexing agent comprises bacillus subtilis, a prion-producing yeast and COD degrading bacteria comprising LX-2 and LX-10 type bacteria, and further fully decomposes the residual impurities such as fatty acid, alkylphenol ethoxylates and the like after the cleaning of the cleaning agent is finished;
the invention also provides a using method of the oil stain cleaning agent for the organic oil-gas well, which comprises the following steps:
s1 raw material selection: selecting 0# diesel oil, organic soil, Span-80, calcium oxide CaO, 25% calcium chloride solution, asphalt, clear water, a corrosion pendant, petroleum ether and absolute ethyl alcohol.
S2 reagent mix: the surfactant, the mutual solvent and the inorganic builder are uniformly mixed and dissolved in an organic solvent, and meanwhile, the decomposer is dissolved in deionized water for standby;
s3 sample configuration: a. preparing standard solution: measuring 320ml of 0# diesel oil in S1, placing the 0# diesel oil in a stirrer loaded at 11000 +/-300 rpm, stirring, respectively and sequentially adding 12.0g of organic soil under the condition of not stopping the stirrer, injecting 16.0ml of Span-80 into an injector, adding 4.0g of calcium oxide, stirring for 10min at 4000r/min, slowly adding 80ml of calcium chloride solution under the condition of not stopping the stirrer, then adding 24g of asphalt, and stirring for 30min at 4000 r/min; b. sample slurry preparation: measuring 80ml of clear water in S1 into a beaker, adding 4.0ml of the oil stain cleaning agent for the organic oil-gas well under the stirring of 1000 +/-300 rpm of load, measuring 20ml of standard test solution without stopping a stirrer, adding the standard test solution into the beaker, and stirring for 2min at the speed of 800 r/min; pouring the sample slurry into a measuring cylinder, and measuring the time for separating out 20% clear water (16ml) for 2 min;
s4 cleaning and detecting: a. treating the corrosion coupon in the step S1 according to a corrosion inhibitor performance evaluation method for oilfield produced water, and maintaining constant weight; b. the corrosion hanging piece is sleeved with a thin nylon rope for hanging conveniently, and the constant weight of the corrosion hanging piece bound with the nylon rope is marked as M0(ii) a c. The oil stain cleaning agent for the organic oil-gas well is prepared into 1000ml of solution with the mass fraction of 10% for standby; d. suspending the corrosion hanging piece bound with the nylon rope on a titration frame, immersing the corrosion hanging piece in a beaker filled with the mixed solution in the S1, ensuring that the immersion height of the nylon rope is not more than 1cm, adding the decomposer solution in the S1 after reacting for 10min, standing for reacting for 5min, lifting the corrosion hanging piece, slightly contacting the corrosion hanging piece with the inner wall of the beaker to facilitate liquid drops to flow down, naturally airing for 2-3h until the corrosion hanging piece does not drop liquid, weighing the weight of the corrosion hanging piece bound with the nylon rope, and recording as M1(ii) a d. Immersing the corrosion hanging piece bound with the nylon rope in a container filled with thick oil with the apparent viscosity of more than 120mPa & s at room temperature for 1h, ensuring that the immersion height of the nylon rope is not more than 1cm, airing for 2-3h at room temperature until the corrosion hanging piece does not drip, and weighing the weight M of the corrosion hanging piece polluted by the thick oil2。
S5 efficiency calculation: the data recorded in S4 is expressed according to the cleaning efficiency formula:
in the formula:
CEF-cleaning efficiency%
M0Weight of hanging piece bound with nylon rope, g
M1Weight of the coupon after adsorption of detergent, g
M2Weight of coupon contaminated with Thick oil, g
M3Weight of the cleaned hanging pieces of contaminated heavy oil, g
The cleaning efficiency of the obtained oil stain cleaning agent for the organic oil-gas well is 90%.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The oil stain cleaning agent for the organic oil-gas well is characterized by comprising the following components in parts by weight: comprises the following components: deionized water, surfactant, mutual solvent, inorganic builder and decomposer; the surfactant is one or more of alkylphenol polyoxyethylene and organosilicate; the mutual solvent comprises a mutual solvent forming agent and a mutual solvent reaction agent; the mutual soluble forming agent is one or more of ruthenium, palladium, platinum, rubidium and cesium solution; the mutual-soluble reactant adopts ethylene oxide and absolute ethyl alcohol; the inorganic builder is selected from one or more of sodium bicarbonate, sodium carbonate and sodium hydroxide; the decomposing agent comprises titanium dioxide powder and a bacillus subtilis complexing agent.
2. The oil stain cleaning agent for the organic oil and gas well, according to claim 1, is characterized in that: the titanium dioxide powder is superfine ground nano-scale titanium dioxide powder.
3. The oil stain cleaning agent for the organic oil and gas well, according to claim 1, is characterized in that: the bacillus subtilis composite reagent adopts bacillus subtilis, a prion-producing yeast and COD degrading bacteria.
4. The oil stain cleaning agent for the organic oil and gas well, according to claim 3, is characterized in that: the COD degrading bacteria adopt LX-2 and LX-10 type bacteria which have the functions of degrading fatty acid, surfactant, hydrocarbon, phenolic compound, ketone and partial organic matters.
5. The oil stain cleaning agent for the organic oil and gas well, according to claim 1, is characterized in that: the mutual soluble forming agent is prepared by carrying one or more molecules of ruthenium, palladium, platinum, rubidium and cesium solution on nano carbon or nano silicon and preparing into powder.
6. The oil stain cleaning agent for the organic oil and gas well, according to claim 1, is characterized in that: the mass percentages of the deionized water, the surfactant, the mutual solvent, the inorganic builder and the decomposer are respectively 35-40%, 3.5-5.5%, 10-20%, 10-15% and 25-30%.
7. The oil stain cleaning agent for the organic oil and gas well, according to claim 6, is characterized in that: the mutual solvent comprises 5-10% of mutual solvent forming agent and 80-95% of mutual solvent.
8. The use method of the oil stain cleaning agent for the organic oil-gas well is characterized by comprising the following steps: the method comprises the following steps:
s1 raw material selection: selecting 0# diesel oil, organic soil, Span-80, calcium oxide CaO, 25% calcium chloride solution, asphalt, clear water, a corrosion pendant, petroleum ether and absolute ethyl alcohol.
S2 reagent mix: the surfactant, the mutual solvent and the inorganic builder are uniformly mixed and dissolved in an organic solvent, and meanwhile, the decomposer is dissolved in deionized water for standby;
s3 sample configuration: a. preparing standard solution: measuring 320ml of 0# diesel oil in S1, placing the 0# diesel oil in a stirrer loaded at 11000 +/-300 rpm, stirring, respectively and sequentially adding 12.0g of organic soil under the condition of not stopping the stirrer, injecting 16.0ml of Span-80 into an injector, adding 4.0g of calcium oxide, stirring at a high speed for 10min, slowly adding 80ml of calcium chloride solution under the condition of not stopping the stirrer, then adding 24g of asphalt, and stirring at a high speed for 30 min; b. sample slurry preparation: measuring 80ml of clear water in S1 in a beaker, adding 4.0ml of the oil stain cleaning agent for the organic oil-gas well under the stirring of 1000 +/-300 rpm of load, measuring 20ml of standard test solution without stopping a stirrer, adding the standard test solution into the beaker, and stirring at a low speed for 2 min; pouring the sample slurry into a measuring cylinder, and measuring the time for separating out 20% clear water (16 ml);
s4 cleaning and detecting: a. treating the corrosion coupon in the step S1 according to a corrosion inhibitor performance evaluation method for oilfield produced water, and maintaining constant weight; b. the corrosion hanging piece is sleeved with a thin nylon rope for hanging conveniently, and the constant weight of the corrosion hanging piece bound with the nylon rope is marked as M0(ii) a c. The oil stain cleaning agent for the organic oil-gas well is prepared into 1000ml of solution with the mass fraction of 10% for standby; d. suspending the corrosion hanging piece bound with the nylon rope on a titration frame, immersing the corrosion hanging piece in a beaker filled with the mixed solution in the S1, ensuring that the immersion height of the nylon rope is not more than 1cm, adding the decomposer solution in the S1 after reacting for 10min, standing for reacting for 5min, lifting the corrosion hanging piece, slightly contacting the corrosion hanging piece with the inner wall of the beaker to facilitate liquid drops to flow down, naturally airing for 2-3h until the corrosion hanging piece does not drop liquid, weighing the weight of the corrosion hanging piece bound with the nylon rope, and recording as M1(ii) a d. Immersing the corrosion hanging piece bound with the nylon rope in a container filled with thick oil with the apparent viscosity of more than 120mPa & s at room temperature for 1h, ensuring that the immersion height of the nylon rope is not more than 1cm, airing for 2-3h at room temperature until the corrosion hanging piece does not drip, and weighing the weight M of the corrosion hanging piece polluted by the thick oil2。
S5 efficiency calculation: and calculating the data recorded in the S4 according to a cleaning efficiency formula to obtain the cleaning efficiency of the oil stain cleaning agent for the organic oil-gas well.
9. The use method of the oil stain cleaning agent for the organic oil and gas well, according to claim 1, is characterized in that: the high-speed stirring in the S3 adopts the rotation speed of 4000r/min, and the low-speed stirring adopts the rotation speed of 800 r/min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113061424A (en) * | 2021-03-03 | 2021-07-02 | 中国石油化工股份有限公司 | Solid blockage removal system for low-permeability oil reservoir oil-water well and preparation method thereof |
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| CN108192747A (en) * | 2017-12-13 | 2018-06-22 | 中国石油大学(北京) | Reusable oily sludge and oil-contained drilling cuttings nanometer cleaning agent and its application |
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2019
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| CN102127408A (en) * | 2010-12-23 | 2011-07-20 | 中国石油天然气股份有限公司 | Polymer-contained or gel-contained flushing fluid of oil-well produced fluid |
| CN103013483A (en) * | 2012-12-28 | 2013-04-03 | 天津市浩宇助剂有限公司 | Oil contamination cleaning agent |
| CN104327817A (en) * | 2014-11-11 | 2015-02-04 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Shaft oil stain detergent as well as preparation method and application |
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