CN116445148A - Crude oil viscosity reducing agent and preparation method thereof - Google Patents
Crude oil viscosity reducing agent and preparation method thereof Download PDFInfo
- Publication number
- CN116445148A CN116445148A CN202310311750.XA CN202310311750A CN116445148A CN 116445148 A CN116445148 A CN 116445148A CN 202310311750 A CN202310311750 A CN 202310311750A CN 116445148 A CN116445148 A CN 116445148A
- Authority
- CN
- China
- Prior art keywords
- crude oil
- reducing agent
- parts
- viscosity reducing
- viscosity reducer
- 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.)
- Pending
Links
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 186
- 239000010779 crude oil Substances 0.000 title claims abstract description 91
- 238000002360 preparation method Methods 0.000 title abstract description 25
- 239000004094 surface-active agent Substances 0.000 claims abstract description 76
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000000203 mixture Substances 0.000 claims abstract description 51
- 239000002904 solvent Substances 0.000 claims abstract description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 12
- 230000000994 depressogenic effect Effects 0.000 claims abstract 2
- -1 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline Chemical compound 0.000 claims description 31
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N dimethylmethane Natural products CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 5
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 5
- 239000001294 propane Substances 0.000 claims description 5
- 229940124530 sulfonamide Drugs 0.000 claims description 5
- 239000005909 Kieselgur Substances 0.000 claims description 4
- 239000002283 diesel fuel Substances 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000001603 reducing effect Effects 0.000 abstract description 17
- 230000000052 comparative effect Effects 0.000 description 10
- 230000002195 synergetic effect Effects 0.000 description 4
- VBIIFPGSPJYLRR-UHFFFAOYSA-M Stearyltrimethylammonium chloride Chemical group [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C VBIIFPGSPJYLRR-UHFFFAOYSA-M 0.000 description 2
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical group [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- KCXFHTAICRTXLI-UHFFFAOYSA-N propane-1-sulfonic acid Chemical compound CCCS(O)(=O)=O KCXFHTAICRTXLI-UHFFFAOYSA-N 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 150000001924 cycloalkanes Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
-
- 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
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
-
- 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
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
- F17D1/17—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by mixing with another liquid, i.e. diluting
Abstract
The invention relates to the technical field of viscosity reducers, and particularly discloses a crude oil viscosity reducer and a preparation method thereof. The crude oil viscosity reducer comprises the following raw material components in parts by weight: 1-3 parts of inorganic pour point depressant; 1-3 parts of organic viscosity reducer; 100-200 parts of solvent; the inorganic viscosity reducer consists of titanium dioxide and diatomite. Further, the modified inorganic viscosity reducer is prepared by the following method: (1) Mixing titanium dioxide and diatomite, and then placing the mixture into a muffle furnace for roasting for 3-5 hours to obtain a roasting mixture; (2) Adding the roasting mixture into a solution containing a surfactant, uniformly mixing, and drying to obtain the modified inorganic viscosity reducing agent. The crude oil viscosity reducer is prepared by adding an inorganic viscosity reducer consisting of titanium dioxide and diatomite into a solvent; has better viscosity reducing effect.
Description
Technical Field
The invention relates to the technical field of viscosity reducers, in particular to a crude oil viscosity reducer and a preparation method thereof.
Background
Crude oil is usually crude oil which is not processed, is a viscous oily liquid which is black brown, has green fluorescence and has special odor; it contains various liquid hydrocarbons such as alkane, cycloalkane, aromatic hydrocarbon and alkene.
Currently, pipeline transportation is one of the main transportation routes for crude oil transportation; because of the complex components in crude oil, the viscosity of the crude oil is high, and the fluidity at low temperature is poor. In order to solve the problem of crude oil fluidity, heating the pipeline is one of the ways to promote crude oil flow. But the heating mode not only consumes a large amount of energy, but also has potential safety hazards. If the crude oil viscosity reducing agent with good viscosity reducing effect can be provided, the application value is important.
Disclosure of Invention
In order to solve at least one technical problem pointed out in the prior art, the invention firstly provides a crude oil viscosity reducer.
The technical problems to be solved by the invention are realized by the following technical scheme:
the crude oil viscosity reducer comprises the following raw material components in parts by weight: 1-3 parts of inorganic viscosity reducer; 1-3 parts of organic viscosity reducer; 100-200 parts of solvent;
the inorganic viscosity reducer consists of titanium dioxide and diatomite.
The invention provides a crude oil viscosity reducer with brand new composition, which is prepared by adding an inorganic viscosity reducer consisting of titanium dioxide and diatomite and an organic viscosity reducer into a solvent; has better viscosity reducing effect.
Preferably, the crude oil viscosity reducer comprises the following raw material components in parts by weight: 1-2 parts of inorganic viscosity reducer; 1-2 parts of organic viscosity reducer; 100-150 parts of solvent.
Most preferably, the crude oil viscosity reducer comprises the following raw material components in parts by weight: 1.5 parts of inorganic viscosity reducer; 1.5 parts of organic viscosity reducer; 150 parts of solvent.
Preferably, the weight ratio of the titanium dioxide to the diatomite in the inorganic viscosity reducing agent is 2-4:1.
Most preferably, the weight ratio of titanium dioxide to diatomaceous earth in the inorganic viscosity reducing agent is 3:1.
Preferably, the organic viscosity reducing agent is an ethylene-vinyl acetate copolymer.
Preferably, the solvent is diesel oil.
Preferably, the inorganic viscosity reducing agent is a modified inorganic viscosity reducing agent;
the modified inorganic viscosity reducer is prepared by the following method:
(1) Mixing titanium dioxide and diatomite, and then placing the mixture into a muffle furnace for roasting for 3-5 hours to obtain a roasting mixture;
(2) Adding the roasting mixture into a solution containing a surfactant, uniformly mixing, and drying to obtain the modified inorganic viscosity reducing agent.
The inventors have surprisingly found that the addition of a modified inorganic viscosity reducing agent obtained by modifying titanium dioxide and diatomaceous earth by the above method to a crude oil viscosity reducing agent can improve the viscosity reducing effect of the crude oil viscosity reducing agent compared to the addition of an unmodified inorganic viscosity reducing agent composed of titanium dioxide and diatomaceous earth.
It is further preferred that the weight ratio of the firing mixture to the surfactant-containing solution in step (2) is 1:1.5 to 2.5.
Most preferably, the weight ratio of the firing mixture to the surfactant-containing solution in step (2) is 1:2.
Preferably, the surfactant in step (2) is a mixed surfactant consisting of 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline and N, N-dihydroxyethyl, N-p-octadecyl benzenesulfonamide propyl ammonium propane sulfonate.
In further research, the inventor finds that in the process of modifying titanium dioxide and diatomite by the method, the selection of the surfactant plays a decisive role in whether the viscosity of the crude oil can be greatly reduced by the prepared crude oil viscosity reducing agent.
The inventors found in a great deal of research that when a mixed surfactant composed of 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline and N, N-dihydroxyethyl, N-p-octadecyl benzene sulfonamide propyl ammonium propane sulfonate is selected as the surfactant, the crude oil viscosity reducer prepared can synergistically improve the viscosity reducing effect on crude oil; the viscosity reducing effect is greatly higher than that of crude oil viscosity reducing agents prepared by selecting single 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline or N, N-dihydroxyethyl, N-octadecyl benzene sulfonamide propyl ammonium propane sulfonate or other surfactants.
Meanwhile, the inventor also discovers that the crude oil viscosity reducing agent prepared by the mixed surfactant consisting of 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline and N, N-dihydroxyethyl, N-octadecyl benzene sulfonamide propyl ammonium propane sulfonate can generate synergistic viscosity reducing effect on crude oil only when the surfactant is selected; however, crude oil viscosity reducers prepared using a combination of 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline and other surfactants, or using a combination of N, N-dihydroxyethyl, N-p-octadecyl benzenesulfonamide propyl ammonium propane sulfonate and other surfactants, do not produce synergistic viscosity reducing effects.
Preferably, the weight ratio of the 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline to the N, N-dihydroxyethyl, N-octadecyl benzene sulfonamide propyl ammonium propane sulfonate is 1-3:1-3.
Most preferably, the weight ratio of 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline to N, N-dihydroxyethyl, N-p-octadecyl benzenesulfonamide propyl ammonium propane sulfonate is 1:1.
Most preferably, the mass fraction of surfactant in the surfactant-containing solution in step (2) is 5-8%.
Most preferably, the surfactant-containing solution in step (2) has a mass fraction of surfactant of 6%.
The invention also provides a preparation method of the crude oil viscosity reducer, which comprises the following steps: adding the inorganic viscosity reducing agent or the modified inorganic viscosity reducing agent and the organic viscosity reducing agent into a solvent, and uniformly mixing to obtain the crude oil viscosity reducing agent.
The beneficial effects are that: the invention provides a crude oil viscosity reducer with a brand new composition; the crude oil viscosity reducer is prepared by adding an inorganic viscosity reducer consisting of titanium dioxide and diatomite into a solvent; has better viscosity reducing effect; in particular, the viscosity reducing effect of the crude oil viscosity reducing agent can be further improved by adding the modified inorganic viscosity reducing agent obtained by modifying the titanium dioxide and the diatomite by adopting the method disclosed by the invention compared with the inorganic viscosity reducing agent which is formed by adding unmodified titanium dioxide and diatomite.
Detailed Description
The present invention is further explained below with reference to specific examples, which are not intended to limit the present invention in any way.
The ethylene-vinyl acetate copolymer used in the following examples was an ethylene-vinyl acetate copolymer having a trade name of EV360 of Sanjing corporation of Japan; the remaining unidentified starting materials are conventional starting materials which can be obtained by the person skilled in the art by conventional purchasing routes or by conventional methods.
Example 1 preparation of crude oil viscosity reducing agent
The raw materials comprise the following components in parts by weight: 1.5 parts of inorganic viscosity reducer; 1.5 parts of organic viscosity reducer; 150 parts of solvent;
the inorganic viscosity reducer consists of titanium dioxide and diatomite in a weight ratio of 3:1;
the organic viscosity reducer is ethylene-vinyl acetate copolymer;
the solvent is diesel oil;
the preparation method comprises the following steps: adding the inorganic viscosity reducing agent and the organic viscosity reducing agent into a solvent, and uniformly mixing to obtain the crude oil viscosity reducing agent.
Example 2 preparation of crude oil viscosity reducing agent
The raw materials comprise the following components in parts by weight: 1.5 parts of modified inorganic viscosity reducer; 1.5 parts of organic viscosity reducer; 150 parts of solvent;
the modified inorganic viscosity reducer is prepared by the following method:
(1) Mixing titanium dioxide and diatomite in a weight ratio of 3:1, and then placing the mixture into a muffle furnace to be roasted for 4 hours at 500 ℃ to obtain a roasted mixture;
(2) Adding the roasting mixture into a solution containing a surfactant, uniformly mixing, and drying to obtain the modified inorganic viscosity reducing agent;
the weight ratio of the roasting mixture to the solution containing the surfactant in the step (2) is 1:2; the mass fraction of the surfactant in the solution containing the surfactant is 6%; the surfactant consists of 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline and N, N-dihydroxyethyl, N-p-octadecyl benzene sulfonamide propyl ammonium propane sulfonate in a weight ratio of 1:1.
The preparation method comprises the following steps: adding the modified inorganic viscosity reducing agent and the organic viscosity reducing agent into a solvent, and uniformly mixing to obtain the crude oil viscosity reducing agent.
Example 3 preparation of crude oil viscosity reducing agent
The raw materials comprise the following components in parts by weight: 1 part of modified inorganic viscosity reducer; 3 parts of organic viscosity reducing agent; 200 parts of solvent;
the modified inorganic viscosity reducer is prepared by the following method:
(1) Mixing titanium dioxide and diatomite in a weight ratio of 2:1, and then placing the mixture into a muffle furnace to be roasted for 3 hours at 500 ℃ to obtain a roasted mixture;
(2) Adding the roasting mixture into a solution containing a surfactant, uniformly mixing, and drying to obtain the modified inorganic viscosity reducing agent;
the weight ratio of the roasting mixture to the solution containing the surfactant in the step (2) is 1:3; the mass fraction of the surfactant in the surfactant-containing solution is 5%; the surfactant consists of 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline and N, N-dihydroxyethyl, N-p-octadecyl benzene sulfonamide propyl ammonium propane sulfonate in a weight ratio of 3:1.
The preparation method comprises the following steps: adding the modified inorganic viscosity reducing agent and the organic viscosity reducing agent into a solvent, and uniformly mixing to obtain the crude oil viscosity reducing agent.
Example 4 preparation of crude oil viscosity reducing agent
The raw materials comprise the following components in parts by weight: 3 parts of modified inorganic viscosity reducing agent; 1 part of organic viscosity reducer; 100 parts of solvent;
the modified inorganic viscosity reducer is prepared by the following method:
(1) Mixing titanium dioxide and diatomite in a weight ratio of 4:1, and then placing the mixture into a muffle furnace to be roasted for 5 hours at 500 ℃ to obtain a roasted mixture;
(2) Adding the roasting mixture into a solution containing a surfactant, uniformly mixing, and drying to obtain the modified inorganic viscosity reducing agent;
the weight ratio of the roasting mixture to the solution containing the surfactant in the step (2) is 1:1; the mass fraction of the surfactant in the surfactant-containing solution is 10%; the surfactant consists of 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline and N, N-dihydroxyethyl, N-p-octadecyl benzene sulfonamide propyl ammonium propane sulfonate in a weight ratio of 1:3.
The preparation method comprises the following steps: adding the modified inorganic viscosity reducing agent and the organic viscosity reducing agent into a solvent, and uniformly mixing to obtain the crude oil viscosity reducing agent.
Comparative example 1 preparation of crude oil viscosity-reducing agent
The raw materials comprise the following components in parts by weight: 1.5 parts of modified inorganic viscosity reducer; 1.5 parts of organic viscosity reducer; 150 parts of solvent;
the modified inorganic viscosity reducer is prepared by the following method:
(1) Mixing titanium dioxide and diatomite in a weight ratio of 3:1, and then placing the mixture into a muffle furnace to be roasted for 4 hours at 500 ℃ to obtain a roasted mixture;
(2) Adding the roasting mixture into a solution containing a surfactant, uniformly mixing, and drying to obtain the modified inorganic viscosity reducing agent;
the weight ratio of the roasting mixture to the solution containing the surfactant in the step (2) is 1:2; the mass fraction of the surfactant in the solution containing the surfactant is 6%; the surfactant is sodium dodecyl benzene sulfonate.
The preparation method comprises the following steps: adding the modified inorganic viscosity reducing agent and the organic viscosity reducing agent into a solvent, and uniformly mixing to obtain the crude oil viscosity reducing agent.
Comparative example 2 preparation of crude oil viscosity-reducing agent
The raw materials comprise the following components in parts by weight: 1.5 parts of modified inorganic viscosity reducer; 1.5 parts of organic viscosity reducer; 150 parts of solvent;
the modified inorganic viscosity reducer is prepared by the following method:
(1) Mixing titanium dioxide and diatomite in a weight ratio of 3:1, and then placing the mixture into a muffle furnace to be roasted for 4 hours at 500 ℃ to obtain a roasted mixture;
(2) Adding the roasting mixture into a solution containing a surfactant, uniformly mixing, and drying to obtain the modified inorganic viscosity reducing agent;
the weight ratio of the roasting mixture to the solution containing the surfactant in the step (2) is 1:2; the mass fraction of the surfactant in the solution containing the surfactant is 6%; the surfactant is octadecyl trimethyl ammonium chloride.
The preparation method comprises the following steps: adding the modified inorganic viscosity reducing agent and the organic viscosity reducing agent into a solvent, and uniformly mixing to obtain the crude oil viscosity reducing agent.
Comparative example 3 preparation of crude oil viscosity reducing agent
The raw materials comprise the following components in parts by weight: 1.5 parts of modified inorganic viscosity reducer; 1.5 parts of organic viscosity reducer; 150 parts of solvent;
the modified inorganic viscosity reducer is prepared by the following method:
(1) Mixing titanium dioxide and diatomite in a weight ratio of 3:1, and then placing the mixture into a muffle furnace to be roasted for 4 hours at 500 ℃ to obtain a roasted mixture;
(2) Adding the roasting mixture into a solution containing a surfactant, uniformly mixing, and drying to obtain the modified inorganic viscosity reducing agent;
the weight ratio of the roasting mixture to the solution containing the surfactant in the step (2) is 1:2; the mass fraction of the surfactant in the solution containing the surfactant is 6%; the surfactant is 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline.
The preparation method comprises the following steps: adding the modified inorganic viscosity reducing agent and the organic viscosity reducing agent into a solvent, and uniformly mixing to obtain the crude oil viscosity reducing agent.
Comparative example 4 preparation of crude oil viscosity reducing agent
The raw materials comprise the following components in parts by weight: 1.5 parts of modified inorganic viscosity reducer; 1.5 parts of organic viscosity reducer; 150 parts of solvent;
the modified inorganic viscosity reducer is prepared by the following method:
(1) Mixing titanium dioxide and diatomite in a weight ratio of 3:1, and then placing the mixture into a muffle furnace to be roasted for 4 hours at 500 ℃ to obtain a roasted mixture;
(2) Adding the roasting mixture into a solution containing a surfactant, uniformly mixing, and drying to obtain the modified inorganic viscosity reducing agent;
the weight ratio of the roasting mixture to the solution containing the surfactant in the step (2) is 1:2; the mass fraction of the surfactant in the solution containing the surfactant is 6%; the surfactant is N, N-dihydroxyethyl, N-octadecyl benzene sulfonamide propyl ammonium propane sulfonate.
The preparation method comprises the following steps: adding the modified inorganic viscosity reducing agent and the organic viscosity reducing agent into a solvent, and uniformly mixing to obtain the crude oil viscosity reducing agent.
Comparative example 5 preparation of crude oil viscosity reducing agent
The raw materials comprise the following components in parts by weight: 1.5 parts of modified inorganic viscosity reducer; 1.5 parts of organic viscosity reducer; 150 parts of solvent;
the modified inorganic viscosity reducer is prepared by the following method:
(1) Mixing titanium dioxide and diatomite in a weight ratio of 3:1, and then placing the mixture into a muffle furnace to be roasted for 4 hours at 500 ℃ to obtain a roasted mixture;
(2) Adding the roasting mixture into a solution containing a surfactant, uniformly mixing, and drying to obtain the modified inorganic viscosity reducing agent;
the weight ratio of the roasting mixture to the solution containing the surfactant in the step (2) is 1:2; the mass fraction of the surfactant in the solution containing the surfactant is 6%; the surfactant consists of sodium dodecyl benzene sulfonate and N, N-dihydroxyethyl, N-octadecyl benzene sulfonamide propyl ammonium group propane sulfonate in a weight ratio of 1:1.
The preparation method comprises the following steps: adding the modified inorganic viscosity reducing agent and the organic viscosity reducing agent into a solvent, and uniformly mixing to obtain the crude oil viscosity reducing agent.
Comparative example 6 preparation of crude oil viscosity reducing agent
The raw materials comprise the following components in parts by weight: 1.5 parts of modified inorganic viscosity reducer; 1.5 parts of organic viscosity reducer; 150 parts of solvent;
the modified inorganic viscosity reducer is prepared by the following method:
(1) Mixing titanium dioxide and diatomite in a weight ratio of 3:1, and then placing the mixture into a muffle furnace to be roasted for 4 hours at 500 ℃ to obtain a roasted mixture;
(2) Adding the roasting mixture into a solution containing a surfactant, uniformly mixing, and drying to obtain the modified inorganic viscosity reducing agent;
the weight ratio of the roasting mixture to the solution containing the surfactant in the step (2) is 1:2; the mass fraction of the surfactant in the solution containing the surfactant is 6%; the surfactant consists of 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline and octadecyl trimethyl ammonium chloride in a weight ratio of 1:1.
The preparation method comprises the following steps: adding the modified inorganic viscosity reducing agent and the organic viscosity reducing agent into a solvent, and uniformly mixing to obtain the crude oil viscosity reducing agent.
Experimental example crude oil viscosity-reducing experiment
The crude oil viscosity reducing agents prepared in examples 1 to 4 and comparative examples 1 to 6 are added into crude oil according to the addition amount of 1% by mass fraction and stirred uniformly; then testing the apparent viscosity at 25 ℃; the test results are shown in Table 1.
TABLE 1 Experimental results of the viscosity reducing effect of the crude oil viscosity reducing agent of the invention
As can be seen from the experimental results in Table 1, the viscosity reducing agent for crude oil prepared in example 1 can effectively reduce the apparent viscosity of crude oil; this illustrates: according to the invention, the viscosity of crude oil can be effectively reduced by adopting the inorganic viscosity reducing agent composed of titanium dioxide and diatomite and the crude oil viscosity reducing agent composed of organic viscosity reducing agent.
As can be seen from the experimental results in table 1, the apparent viscosity of the crude oil viscosity reducing agents prepared in examples 2 to 4 is further greatly reduced compared with that of the crude oil viscosity reducing agent prepared in example 1; has lower apparent viscosity; this illustrates: compared with the method for adding the unmodified inorganic viscosity reducing agent consisting of the titanium dioxide and the diatomite, the method for adding the modified inorganic viscosity reducing agent to the crude oil viscosity reducing agent can further greatly improve the viscosity reducing effect of the crude oil viscosity reducing agent.
As can be seen from the experimental results in Table 1, the apparent viscosity of the crude oil viscosity reducer prepared in example 2 is substantially lower than that of the crude oil viscosity reducer prepared in comparative examples 1 to 4; this illustrates: in the process of modifying titanium dioxide and diatomite by the method, the selection of the surfactant plays a decisive role in whether the viscosity of the prepared crude oil viscosity reducer can be greatly reduced. When the surfactant is a mixed surfactant consisting of 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline and N, N-dihydroxyethyl, N-octadecyl benzene sulfonamide propyl ammonium group propane sulfonate, the crude oil viscosity reducer prepared can synergistically improve the viscosity reducing effect on crude oil; the viscosity reducing effect is greatly higher than that of crude oil viscosity reducing agents prepared by selecting single 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline or N, N-dihydroxyethyl, N-octadecyl benzene sulfonamide propyl ammonium propane sulfonate or other surfactants.
As can be seen from the experimental results in Table 1, the crude oil viscosity reducers prepared in comparative examples 5 and 6 have viscosity reducing effects which are equivalent to those of the crude oil viscosity reducers prepared in comparative examples 1 to 4 and are far higher than those of the crude oil viscosity reducers prepared in example 2; this illustrates: only when the surfactant is selected from the crude oil viscosity reducing agent prepared from a mixed surfactant consisting of 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline and N, N-dihydroxyethyl, N-octadecyl benzene sulfonamide propyl ammonium propane sulfonate, the crude oil viscosity reducing agent can generate a synergistic viscosity reducing effect on the crude oil; however, crude oil viscosity reducers prepared using a combination of 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline and other surfactants, or using a combination of N, N-dihydroxyethyl, N-p-octadecyl benzenesulfonamide propyl ammonium propane sulfonate and other surfactants, do not produce synergistic viscosity reducing effects.
Claims (10)
1. The crude oil viscosity reducer is characterized by comprising the following raw material components in parts by weight: 1-3 parts of inorganic pour point depressant; 1-3 parts of organic viscosity reducer; 100-200 parts of solvent;
the inorganic viscosity reducer consists of titanium dioxide and diatomite.
2. The crude oil viscosity reducer of claim 1, comprising the following raw components in parts by weight: 1-2 parts of inorganic viscosity reducer; 1-2 parts of organic viscosity reducer; 100-150 parts of solvent;
most preferably, the crude oil viscosity reducer comprises the following raw material components in parts by weight: 1.5 parts of inorganic viscosity reducer; 1.5 parts of organic viscosity reducer; 150 parts of solvent.
3. The crude oil viscosity reducer according to claim 1, wherein the weight ratio of titanium dioxide to diatomite in the inorganic viscosity reducer is 2-4:1;
most preferably, the weight ratio of titanium dioxide to diatomaceous earth in the inorganic viscosity reducing agent is 3:1.
4. The crude oil viscosity reducing agent of claim 1, wherein the organic viscosity reducing agent is an ethylene-vinyl acetate copolymer.
5. The crude oil viscosity reducing agent of claim 1, wherein the solvent is diesel fuel.
6. The crude oil viscosity reducer of claim 1, wherein the inorganic viscosity reducer is a modified inorganic viscosity reducer;
the modified inorganic viscosity reducer is prepared by the following method:
(1) Mixing titanium dioxide and diatomite, and then placing the mixture into a muffle furnace for roasting for 3-5 hours to obtain a roasting mixture;
(2) Adding the roasting mixture into a solution containing a surfactant, uniformly mixing, and drying to obtain the modified inorganic viscosity reducing agent.
7. The crude oil viscosity reducing agent of claim 6, wherein the weight ratio of the calcined mixture to the surfactant-containing solution in step (2) is 1:1.5-2.5;
most preferably, the weight ratio of the firing mixture to the surfactant-containing solution in step (2) is 1:2.
8. The crude oil viscosity reducing agent according to claim 6, wherein the surfactant in step (2) is a mixed surfactant consisting of 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline and N, N-dihydroxyethyl, N-p-octadecyl benzene sulfonamide propylammonio propane sulfonate.
9. The crude oil viscosity reducer of claim 8, wherein the weight ratio of 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline to N, N-dihydroxyethyl, N-p-octadecyl benzenesulfonamide propyl ammonium propane sulfonate is 1-3:1-3;
most preferably, the weight ratio of 1-hydroxyethyl-2-undecyl-1-carboxymethyl imidazoline to N, N-dihydroxyethyl, N-p-octadecyl benzenesulfonamide propyl ammonium propane sulfonate is 1:1.
10. The method for producing a crude oil viscosity reducing agent according to any one of claims 1 to 9, comprising the steps of: adding the inorganic viscosity reducing agent or the modified inorganic viscosity reducing agent and the organic viscosity reducing agent into a solvent, and uniformly mixing to obtain the crude oil viscosity reducing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310311750.XA CN116445148A (en) | 2023-03-28 | 2023-03-28 | Crude oil viscosity reducing agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310311750.XA CN116445148A (en) | 2023-03-28 | 2023-03-28 | Crude oil viscosity reducing agent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116445148A true CN116445148A (en) | 2023-07-18 |
Family
ID=87123044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310311750.XA Pending CN116445148A (en) | 2023-03-28 | 2023-03-28 | Crude oil viscosity reducing agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116445148A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060254774A1 (en) * | 2005-05-12 | 2006-11-16 | Halliburton Energy Services, Inc. | Degradable surfactants and methods for use |
| WO2008152984A1 (en) * | 2007-06-08 | 2008-12-18 | Toho Chemical Industry Co., Ltd. | Pour point depressant for lubricant |
| JP2012012533A (en) * | 2010-07-02 | 2012-01-19 | Kansai Univ | Method for reducing viscosity and viscosity reducer |
| US20150013984A1 (en) * | 2013-07-15 | 2015-01-15 | Schlumberger Technology Corporation | Fluid viscosity control |
| CN107448777A (en) * | 2016-05-31 | 2017-12-08 | 中国科学院化学研究所 | A kind of glutinous pour point reducer composition of crude oil nanometer drop and its preparation method and application |
| CN111434384A (en) * | 2019-01-14 | 2020-07-21 | 中国石油天然气股份有限公司 | Thickened oil hydrothermal cracking catalyst, and preparation method and application thereof |
| GB202105118D0 (en) * | 2021-04-09 | 2021-05-26 | Championx Usa Inc | Crude oil production using a combination of emulsion viscosity reducer and scale inhibitor |
| CN115011323A (en) * | 2022-07-19 | 2022-09-06 | 胜利油田方圆化工有限公司 | Viscosity reducer for hydrothermal cracking of heavy oil and preparation method and application thereof |
-
2023
- 2023-03-28 CN CN202310311750.XA patent/CN116445148A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060254774A1 (en) * | 2005-05-12 | 2006-11-16 | Halliburton Energy Services, Inc. | Degradable surfactants and methods for use |
| WO2008152984A1 (en) * | 2007-06-08 | 2008-12-18 | Toho Chemical Industry Co., Ltd. | Pour point depressant for lubricant |
| JP2012012533A (en) * | 2010-07-02 | 2012-01-19 | Kansai Univ | Method for reducing viscosity and viscosity reducer |
| US20150013984A1 (en) * | 2013-07-15 | 2015-01-15 | Schlumberger Technology Corporation | Fluid viscosity control |
| CN107448777A (en) * | 2016-05-31 | 2017-12-08 | 中国科学院化学研究所 | A kind of glutinous pour point reducer composition of crude oil nanometer drop and its preparation method and application |
| CN111434384A (en) * | 2019-01-14 | 2020-07-21 | 中国石油天然气股份有限公司 | Thickened oil hydrothermal cracking catalyst, and preparation method and application thereof |
| GB202105118D0 (en) * | 2021-04-09 | 2021-05-26 | Championx Usa Inc | Crude oil production using a combination of emulsion viscosity reducer and scale inhibitor |
| CN115011323A (en) * | 2022-07-19 | 2022-09-06 | 胜利油田方圆化工有限公司 | Viscosity reducer for hydrothermal cracking of heavy oil and preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| PAREJAS, RD，等: "Effects of Al2O3-NiO, TiO2 and (Mg, Ni)O particles on the viscosity of heavy oil during aquathermolysis", COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, vol. 625, 20 September 2021 (2021-09-20) * |
| 王晨辉;徐基鹏;张厚君;韩优: "稠油降黏机理及降黏剂合成方法的研究进展", 化学工业与工程, vol. 39, no. 03, 16 December 2021 (2021-12-16), pages 1 - 17 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3048514B2 (en) | Surfactants and pre-atomized fuel | |
| KR100287291B1 (en) | Multiple emulsions and preparation method thereof | |
| CN102757778A (en) | Fracturing fluid capable of resisting high salinity water quality | |
| CN111154475B (en) | Oil displacement agent for reducing interfacial tension of high-wax-content crude oil and preparation method and application thereof | |
| CA1179915A (en) | Method of breaking an emulsion and an emulsion- emulsion breaker composition | |
| CN103554927A (en) | Compound asphalt warm-mixed viscosity reducer and preparation method thereof | |
| CN109504360B (en) | Thick oil viscosity reducer and preparation method and application thereof | |
| AU2001257607B2 (en) | Organic cetane improver | |
| CN109111906B (en) | Thick oil emulsifying viscosity reducer | |
| CN104672928A (en) | Low-viscosity regenerant for thermal regeneration of asphalt pavement, preparation method of low-viscosity regenerant and asphalt pavement thermal-regeneration mixture containing low-viscosity regenerant | |
| CN111793369A (en) | Spraying SBS modified emulsified asphalt and preparation method thereof | |
| CN116445148A (en) | Crude oil viscosity reducing agent and preparation method thereof | |
| CN103320108B (en) | Wax-removing agent and preparation method thereof | |
| US5152886A (en) | Method for improving heavy crude oils by reducing the asphaltene content of crude oils and oil-containing tar sands | |
| CN110093043B (en) | Asphalt viscosity reducer and preparation method and application thereof | |
| CN105017782A (en) | High-grade road asphalt and preparation method thereof | |
| CN104818057A (en) | Automobile alcohol-based diesel oil composite resin type emulsifier, preparation method and auxiliary agent with application of emulsifier | |
| CN114181689B (en) | High-temperature-resistant composite emulsion viscosity-reducing system and preparation method thereof | |
| EP0025278A2 (en) | A method for the preparation of a uniform dispersion of a friable solid fuel, oil and water and the obtained fuel-oil-water dispersion | |
| CN110937964A (en) | Composite oil phase for mixed emulsion explosive and preparation method thereof | |
| CN109161213B (en) | Composition for cold regeneration of old asphalt and preparation method and application thereof | |
| CN113943565A (en) | Aqueous phase tackifying type thick oil emulsifier and application thereof in reducing viscosity of thick oil | |
| CN108559557A (en) | Microemulsified kitchen waste grease preparing bio-fuel | |
| CN112111165A (en) | Asphalt regenerant and preparation method and application thereof | |
| CN112048336B (en) | Demulsification dehydration additive suitable for heavy crude oil and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |