CN109575894B - Neutral blocking remover for chemical oil extraction in oil field and preparation method thereof - Google Patents
Neutral blocking remover for chemical oil extraction in oil field and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of tertiary oil recovery, in particular to a neutral blocking remover for chemical oil recovery in an oil field and a preparation method thereof. The neutral blocking remover for the oil field chemical oil extraction comprises the following components in parts by weight: surfactant, metal ion chelating agent, polycarboxylic acid ammonium salt, nitrogen-containing compound, bactericide, dispersant and water. Compared with the traditional acid washing deblocking and biological deblocking and solvent, the neutral deblocking agent for oil field chemical oil extraction provided by the invention is safer and more reliable, is green and environment-friendly, thoroughly eliminates the corrosion problem caused by corrosion inhibitor failure when acid is used for deblocking, avoids the risks of inflammable, explosive, toxic and difficult control of biotechnology of the solvent, and has important significance for ensuring safe production and long-period oil extraction.
Description
Technical Field
The invention belongs to the technical field of tertiary oil recovery, and particularly relates to a neutral blocking remover for chemical oil recovery in an oil field and a preparation method thereof.
Background
As most oil fields in China enter the later stage of high water content development, the tertiary oil recovery technology is popularized and applied in a large scale, and the oil fields in Henan, Liaohe, Xinjiang and the like are subjected to pilot tests successively and successfully after Daqing oil fields, Shengli oil fields and Hongkong oil fields. Among them, the ternary complex flooding technology is widely applied to oil production sites.
The ternary complex flooding is a technology for improving the flooding efficiency and the crude oil recovery rate by adding a certain amount of surfactant, alkali and polymer with relatively large molecular weight into injected water, wherein the polymer mainly exists in a dissolving, adsorbing and trapping mode in a stratum, the blockage problem of a polymer injection well is increasingly prominent along with the increase of the injection volume of the polymer, the injection pressure of the polymer injection well is high, the injection allocation and even the injection stop are difficult to complete according to the proportion, the polymer flooding effect is seriously influenced, and the application of the polymer flooding technology is restricted.
Aiming at the problems, by analyzing the reason of the rise of the injection pressure of the polymer flooding injection well and researching the blockage rule of the polymer injection well, the blockage problem of the polymer injection well is relieved by adopting methods of chemical blockage removal and common hydraulic fracturing, although the two methods can relieve the contradiction of the failure of polymer injection and the rise of the injection pressure to a certain extent, the technical problems of low injection quantity increase, short effective period and the like still exist.
At present, people adopt a blocking remover to reduce the blocking of a polymer injection well, but the preparation method of the blocking remover for removing polymer pollutants is mainly to prepare an acidic aqueous solution after different types of strong oxidants (such as hydrogen peroxide, peroxyacetic acid and potassium permanganate) are compounded according to a certain proportion, and then the acidic aqueous solution is directly applied to a blocking removal site. However, all of these types of deblocking agents are strongly oxidizing, and oxidizing solutions are unstable, difficult to store for too long, and cannot be stored in metal containers, which are strictly contraindicated to direct sunlight. Therefore, the method has great potential safety hazard in the field application process, and also has the problems of over-high reaction speed, short effective action distance, high cost, low cost performance, difficulty in deep blockage removal and the like.
Therefore, the problem that the blocking remover for removing the polymer pollutants is excellent in blocking removing performance and good in stability is urgently needed to be solved for improving the oil field exploitation effect.
Disclosure of Invention
In order to solve the problems, the first aspect of the invention provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: surfactant, metal ion chelating agent, polycarboxylic acid ammonium salt, nitrogen-containing compound, bactericide, dispersant and water.
As a preferable technical scheme, the paint comprises the following components in parts by weight: 2-6 parts of surfactant, 1-3 parts of metal ion chelating agent, 2-4 parts of polycarboxylic acid ammonium salt, 1-3 parts of nitrogen-containing compound, 1-2 parts of bactericide, 0.5-1.5 parts of dispersant and 60-90 parts of water.
As a preferable technical scheme, the surfactant comprises polyoxyethylene ether type nonionic surfactant and anionic fluorine surfactant.
As a preferable technical solution, the polyoxyethylene ether type nonionic surfactant is nonylphenol polyoxyethylene ether.
As a preferred technical scheme, the anionic fluorosurfactant is ammonium perfluoropolyether carboxylate.
As a preferable technical scheme, the polycarboxylic acid ammonium salt is selected from one or more of ammonium hydrogen citrate, diamine hydrogen citrate and ethylenediamine tetraacetic acid.
As a preferable technical scheme, the nitrogen-containing compound is an ammonia compound containing an-NH structure.
As a preferable technical scheme, the ammonia compound containing the-NH structure is selected from one or more of azoles, guanidines and imines.
As a preferable technical scheme, the neutral blocking remover for the oilfield chemical oil recovery further comprises ionic liquid.
The second aspect of the invention provides a preparation method of a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following steps: and sequentially adding a surfactant, a metal ion chelating agent, a polycarboxylic acid ammonium salt, a nitrogen-containing compound, a bactericide, a dispersing agent, an ionic liquid and water into a stirring tank according to a proportion at the temperature of 10-50 ℃ and under normal pressure, and stirring for 1-4 hours to obtain the neutral blocking remover for the chemical oil recovery of the oil field.
Has the advantages that: the neutral blocking remover for the chemical oil recovery of the oil field provided by the invention has excellent corrosion rate, descaling rate and cleaning rate. The product of the invention aims at unblocking and dredging pore throat to recover the permeability of the reservoir, removes acid-soluble non-argillaceous blocking substances such as carbonates, silicates, metal oxides and the like in the reservoir, and can effectively remove divalent petroleum sulfonate sediment scale, polyacrylamide polymer material scale and iron oxide sediment scale generated in the process of oil extraction by using ternary combination flooding. In addition, the product of the invention does not damage the reservoir framework, and the waste liquid after the blockage removal does not need to be drained back under the action of the bactericide, and the pump can be started to extract oil after the blockage removal. Compared with the traditional acid washing blockage removal, biological blockage removal and solvent, the product is safer and more reliable, is green and environment-friendly, thoroughly eliminates the corrosion problem caused by the failure of the corrosion inhibitor when the blockage is removed by acid, avoids the risks of inflammable, explosive, toxic and difficult-to-control biotechnology of the solvent, and has important significance for ensuring safe production and long-period oil extraction.
Detailed Description
The technical features of the technical solutions provided by the present invention are further clearly and completely described below with reference to the specific embodiments, and the scope of protection is not limited thereto.
The words "preferred", "more preferred", and the like, in the present invention refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.
When a range of values is disclosed herein, the range is considered to be continuous and includes both the minimum and maximum values of the range, as well as each value between such minimum and maximum values. Further, when a range refers to an integer, each integer between the minimum and maximum values of the range is included. Further, when multiple range-describing features or characteristics are provided, the ranges may be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood to encompass any and all subranges subsumed therein. For example, a stated range from "1 to 10" should be considered to include any and all subranges between the minimum value of 1 and the maximum value of 10. Exemplary subranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, and the like.
In order to solve the problems, the first aspect of the invention provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: surfactant, metal ion chelating agent, polycarboxylic acid ammonium salt, nitrogen-containing compound, bactericide, dispersant and water.
In a preferred embodiment, the composition comprises the following components in parts by weight: 2-6 parts of surfactant, 1-3 parts of metal ion chelating agent, 2-4 parts of polycarboxylic acid ammonium salt, 1-3 parts of nitrogen-containing compound, 1-2 parts of bactericide, 0.5-1.5 parts of dispersant and 60-90 parts of water.
Surface active agent
The surfactant is a substance which is added in a small amount and can cause the interface state of a solution system of the surfactant to change obviously. Has fixed hydrophilic and lipophilic groups and can be directionally arranged on the surface of the solution. The molecular structure of the surfactant has amphipathy: one end is a hydrophilic group, and the other end is a hydrophobic group; the hydrophilic group is often a polar group, such as carboxylic acid, sulfonic acid, sulfuric acid, amino or amino groups and salts thereof, hydroxyl, amide, ether linkages, and the like may also be used as the polar hydrophilic group; and the hydrophobic group is often a non-polar hydrocarbon chain, such as a hydrocarbon chain of 8 or more carbon atoms.
In a preferred embodiment, the surfactant of the present invention comprises a polyoxyethylene ether type nonionic surfactant and an anionic fluorosurfactant.
In a preferred embodiment, the polyoxyethylene ether-type nonionic surfactant of the present invention is nonylphenol polyoxyethylene ether.
In a preferred embodiment, the polyoxyethylene nonyl phenyl ethers of the present invention have an ethylene oxide number of from 6 to 15.
In a preferred embodiment, the nonylphenol polyoxyethylene ether of the present invention is purchased from catalpo heij chemical co, inc, under the designation TX-10; other products that may preferably also include TX-9, TX-15.
In a preferred embodiment, the anionic fluorosurfactant of the present invention is ammonium perfluoropolyether carboxylate.
In a preferred embodiment, the ammonium perfluoropolyether carboxylate of the present invention is purchased from taicang chemical environmental protection chemical company, ltd.
In a preferred embodiment, the surfactant is prepared by compounding nonylphenol polyoxyethylene ether and ammonium perfluoropolyether carboxylate according to the weight ratio of 1 (1-1.5).
In the research process, the inventor finds that the descaling rate and the cleaning rate of the blocking remover can be improved by adopting the nonylphenol polyoxyethylene ether in the formula, but the effect is not obvious when the blocking remover is used singly, so that the inventor compounds the perfluoropolyether ammonium carboxylate, and when the nonylphenol polyoxyethylene ether and the perfluoropolyether ammonium carboxylate are in a weight ratio of 1 (1-1.5), the descaling rate of the blocking remover can be remarkably improved, probably because the permeation of the nonylphenol polyoxyethylene ether on oil stains in a blocking object is utilized, and the perfluoropolyether ammonium carboxylate is further adopted to play a role in removing and breaking a polymer, so that the blocking is effectively removed, and the formation permeability is recovered.
Metal ion chelating agents
The metal chelating agent can contain metal ions into the chelating agent through the strong binding action of the chelating agent molecules and the metal ions, so that the metal ions are changed into stable compounds with larger molecular weight, the metal ions are prevented from acting, and the metal chelating agent can be used for detoxifying, printing and dyeing, scale inhibition and other aspects.
In some embodiments, the metal ion chelating agent of the present invention is selected from one or more of aminotrimethylenephosphonic acid, hydroxyethylidene diphosphonic acid, EDTA, lauryl phosphate triethanolamine.
In a preferred embodiment, the metal ion chelating agent of the present invention is amino trimethylene phosphonic acid available from Runshini chemical Co., Ltd, under the designation GY-308.
Polycarboxylic acid ammonium salts
The ammonium polycarboxylic acid salt is the ammonium polycarboxylic acid salt formed by the reaction of polybasic acid and ammonia. Examples of the polybasic acid include lactic acid, tartaric acid, and citric acid.
In a preferred embodiment, the ammonium polycarboxylic acid salt according to the invention is selected from one or more of the group consisting of ammonium hydrogen citrate, diamine hydrogen citrate and ethylenediamine tetraacetic acid.
In a preferred embodiment, the ammonium salt of a polycarboxylic acid of the present invention is ammonium dihydrogen citrate, purchased from Shanghai resources, Inc.
The inventor finds that the polybasic carboxylic acid ammonium salt can react with sulfide scale deposited in oil reservoirs and oil well oil pipelines to generate soluble calcium, magnesium salts and the like, and simultaneously, the surface of the polybasic carboxylic acid ammonium salt is negatively charged, so that the metal salts are not aggregated and are dissolved.
Nitrogen-containing compounds
The nitrogen-containing compound is an ammonia compound containing an-NH structure, wherein the nitrogen-containing compound is selected from one or more of azoles, guanidines and imines.
In a preferred embodiment, the nitrogen-containing compound of the present invention is selected from one or more of 1,2,4 triazole, benzotriazole, 5-aminotetrazole, biguanide hydrochloride, polyimide, 3-aminotetrazole, and polyimide.
In a preferred embodiment, the nitrogen-containing compound of the present invention is benzotriazole, available from cerasus serrulata, germany.
The inventor finds that the benzotriazole can effectively reduce the corrosion rate due to the fact that heteroatoms and aromatic rings contained in the benzotriazole are adsorbed on the surface of metal, but the benzotriazole has poor water solubility, so that the benzotriazole and the rest components are mutually cooperated to reduce the corrosion rate.
Bactericide
The bactericide of the present invention is also called biocide, bactericidal algicide, microbicide, etc., and generally refers to a chemical agent that is effective in controlling or killing microorganisms-bacteria, fungi and algae in an aqueous system.
In some embodiments, the germicide of the present invention is selected from one or more of sodium hypochlorite, potassium hypochlorite, calcium hypochlorite, dichloroisocyanuric acid, trichloroisocyanuric acid, chlorine dioxide, bromine, sodium hypobromite, potassium hypobromite, calcium hypobromite, quaternary ammonium salts, quaternary phosphonium salts, cinnamaldehyde.
In a preferred embodiment, the bactericide is prepared by compounding tetradecyl dimethyl benzyl ammonium chloride and cinnamaldehyde according to the weight ratio of 1 (0.4-0.8); wherein the tetradecyldimethylbenzylammonium chloride and the cinnamaldehyde are both purchased from Shanghai Michelin Biotech, Inc.
The inventor finds that aerobic bacteria do not degrade the polymer solution and cause blockage during the polymer displacement, so that a certain amount of bactericide must be added to relieve the blockage caused by bacteria. The inventor finds that the bactericide of the invention not only can improve the scale inhibition rate and the cleaning rate, but also can reduce the corrosion rate, and conjectures the possible reason that the bactericide of the invention can interact with the ionic liquid to promote the chemical adsorption on the metal surface; on the other hand, the interaction with the benzotriazole and the dispersant can further make the surface adsorption film firmer.
Dispersing agent
The dispersing agent of the invention is a medicament for promoting material particles to be uniformly dispersed in a medium to form a stable suspension. Dispersants are generally classified into two major classes, inorganic dispersants and organic dispersants. Inorganic dispersants commonly used are silicates (e.g., water glass) and alkali metal phosphates (e.g., sodium tripolyphosphate, sodium hexametaphosphate, sodium pyrophosphate, and the like).
In a preferred embodiment, the dispersant of the present invention is selected from one or more of triethylhexyl phosphoric acid, sodium dodecyl sulfate, methyl amyl alcohol, cellulose derivatives, polyacrylamide, guar gum, fatty acid polyglycol ester, amino silicone oil.
In a preferred embodiment, the dispersant of the present invention is an amino silicone oil, available from believed Cross chemical Silicone, Inc. under the designation KF-864.
The inventor finds that the dispersant is added into the formula, has obvious effects of modifying and dispersing and reducing viscosity, and can obviously improve the scale removal rate and the cleaning rate, probably because the dispersant and the polymer scale of residual liquid have a synergistic effect, the surfactant permeates, simultaneously, hydrophobic long chains of the dispersant and the surfactant attract a large amount of asphalt scales and polymer scales and other organic matters, and simultaneously, polar chain ends enable the scales to repel each other, so that the two acting forces enable the macromolecular organic scales to gradually peel off and disperse the scale layer until the scales are completely dissolved.
In a preferred embodiment, the neutral blocking remover for oilfield chemical oil recovery further comprises an ionic liquid.
In a preferred embodiment, the neutral blocking remover for oilfield chemical oil recovery further comprises 0.3-1.5 parts by weight of ionic liquid.
Ionic liquids
The ionic liquid refers to liquid which is entirely composed of ions, such as KCI at high temperature, KOH is in a liquid state, and the ionic liquid is the ionic liquid. Substances composed of ions that are liquid at or near room temperature are called room-temperature ionic liquids, room-temperature molten salts, organic ionic liquids, and the like.
In a preferred embodiment, the ionic liquid of the present invention is an alkyl imidazole ionic liquid.
In a preferred embodiment, the alkyl imidazole ionic liquid of the present invention is 1-dodecyl-3-methylimidazolium tetrafluoroborate, available from shanghai cheng jie chemical co.
The inventor finds that the ionic liquid added into the formula and the surfactant have synergistic effect to show better corrosion inhibition, probably because of electrostatic attraction between the ionic liquid and the surfactant, micelle is favorably formed, and thus the corrosion inhibition efficiency is increased; and because the ionic liquid has proper chain length, the micelle is enlarged, and a compact and uniform chemical adsorption protective film can be formed on the surface of the metal, so that the corrosion inhibition effect is further improved.
The second aspect of the invention provides a preparation method of a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following steps: and sequentially adding a surfactant, a metal ion chelating agent, a polycarboxylic acid ammonium salt, a nitrogen-containing compound, a bactericide, a dispersing agent, an ionic liquid and water into a stirring tank according to a proportion at the temperature of 10-50 ℃ and under normal pressure, and stirring for 1-4 hours to obtain the neutral blocking remover for the chemical oil recovery of the oil field.
The present invention will now be described in detail by way of examples, and the starting materials used are commercially available unless otherwise specified.
Examples
Example 1
The embodiment 1 provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: 2 parts of surfactant, 1 part of metal ion chelating agent, 2 parts of polycarboxylic acid ammonium salt, 1 part of nitrogen-containing compound, 1 part of bactericide, 0.5 part of dispersant, 0.3 part of ionic liquid and 60 parts of water.
The surfactant is obtained by compounding nonylphenol polyoxyethylene ether and perfluoropolyether ammonium carboxylate according to the weight ratio of 1: 1; the polyoxyethylene nonyl phenyl ether is purchased from ZiboHaijie chemical Co., Ltd, and the brand is TX-10; the ammonium perfluoropolyether carboxylate is purchased from Taicang Zhonghua environmental protection chemical Co.
The metal ion chelating agent is amino trimethylene phosphonic acid which is purchased from American chemical Co., Ltd, Changzhou and has the mark of GY-308.
The ammonium salt of a polycarboxylic acid is ammonium dihydrogen citrate, and is purchased from Shanghai Source materials, Inc.
The nitrogen-containing compound is benzotriazole which is purchased from Cherokee Rose group in Germany.
The bactericide is obtained by compounding tetradecyl dimethyl benzyl ammonium chloride and cinnamyl aldehyde according to the weight ratio of 1: 0.4; wherein the tetradecyldimethylbenzylammonium chloride and the cinnamaldehyde are both purchased from Shanghai Michelin Biotech, Inc.
The dispersing agent is amino silicone oil which is purchased from Xinyue chemical organosilicon Co., Ltd and is of a KF-864 brand.
The ionic liquid was 1-dodecyl-3-methylimidazolium tetrafluoroborate, purchased from shanghai chengjie chemical co.
A preparation method of a neutral blocking remover for chemical oil recovery in an oil field comprises the following steps: and sequentially adding a surfactant, a metal ion chelating agent, polycarboxylic acid ammonium salt, a nitrogen-containing compound, a bactericide, a dispersant, an ionic liquid and water into a stirring tank according to a proportion at 40 ℃ and normal pressure, and stirring for 3 hours to obtain the neutral blocking remover for the chemical oil recovery of the oil field.
Example 2
The embodiment 2 provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: 6 parts of surfactant, 3 parts of metal ion chelating agent, 4 parts of polycarboxylic acid ammonium salt, 3 parts of nitrogen-containing compound, 2 parts of bactericide, 1.5 parts of dispersant, 1.5 parts of ionic liquid and 90 parts of water.
The surfactant is obtained by compounding nonylphenol polyoxyethylene ether and perfluoropolyether ammonium carboxylate according to the weight ratio of 1: 1.2; the polyoxyethylene nonyl phenyl ether is purchased from ZiboHaijie chemical Co., Ltd, and the brand is TX-10; the ammonium perfluoropolyether carboxylate is purchased from Taicang Zhonghua environmental protection chemical Co.
The metal ion chelating agent is amino trimethylene phosphonic acid which is purchased from American chemical Co., Ltd, Changzhou and has the mark of GY-308.
The ammonium salt of a polycarboxylic acid is ammonium dihydrogen citrate, and is purchased from Shanghai Source materials, Inc.
The nitrogen-containing compound is benzotriazole which is purchased from Cherokee Rose group in Germany.
The bactericide is obtained by compounding tetradecyl dimethyl benzyl ammonium chloride and cinnamyl aldehyde according to the weight ratio of 1: 0.8; wherein the tetradecyldimethylbenzylammonium chloride and the cinnamaldehyde are both purchased from Shanghai Michelin Biotech, Inc.
The dispersing agent is amino silicone oil which is purchased from Xinyue chemical organosilicon Co., Ltd and is of a KF-864 brand.
The ionic liquid was 1-dodecyl-3-methylimidazolium tetrafluoroborate, purchased from shanghai chengjie chemical co.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Example 3
Embodiment 3 provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: 3 parts of surfactant, 1.5 parts of metal ion chelating agent, 2.5 parts of polycarboxylic acid ammonium salt, 1.5 parts of nitrogen-containing compound, 1.2 parts of bactericide, 0.8 part of dispersant, 0.5 part of ionic liquid and 70 parts of water.
The surfactant is obtained by compounding nonylphenol polyoxyethylene ether and perfluoropolyether ammonium carboxylate according to the weight ratio of 1: 1.5; the polyoxyethylene nonyl phenyl ether is purchased from ZiboHaijie chemical Co., Ltd, and the brand is TX-9; the ammonium perfluoropolyether carboxylate is purchased from Taicang Zhonghua environmental protection chemical Co.
The metal ion chelating agent is amino trimethylene phosphonic acid which is purchased from American chemical Co., Ltd, Changzhou and has the mark of GY-308.
The ammonium salt of a polycarboxylic acid is ammonium dihydrogen citrate, and is purchased from Shanghai Source materials, Inc.
The nitrogen-containing compound is benzotriazole which is purchased from Cherokee Rose group in Germany.
The bactericide is obtained by compounding tetradecyl dimethyl benzyl ammonium chloride and cinnamyl aldehyde according to the weight ratio of 1: 0.6; wherein the tetradecyldimethylbenzylammonium chloride and the cinnamaldehyde are both purchased from Shanghai Michelin Biotech, Inc.
The dispersing agent is amino silicone oil which is purchased from Xinyue chemical organosilicon Co., Ltd and is of a KF-864 brand.
The ionic liquid was 1-dodecyl-3-methylimidazolium tetrafluoroborate, purchased from shanghai chengjie chemical co.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Example 4
Embodiment 4 provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: 5 parts of surfactant, 2.5 parts of metal ion chelating agent, 3.5 parts of polycarboxylic acid ammonium salt, 2.5 parts of nitrogen-containing compound, 1.8 parts of bactericide, 1.3 parts of dispersant, 1.2 parts of ionic liquid and 80 parts of water.
The surfactant is obtained by compounding nonylphenol polyoxyethylene ether and perfluoropolyether ammonium carboxylate according to the weight ratio of 1: 1.3; the polyoxyethylene nonyl phenyl ether is purchased from ZiboHaijie chemical Co., Ltd, and the brand is TX-15; the ammonium perfluoropolyether carboxylate is purchased from Taicang Zhonghua environmental protection chemical Co.
The metal ion chelating agent is amino trimethylene phosphonic acid which is purchased from American chemical Co., Ltd, Changzhou and has the mark of GY-308.
The ammonium salt of a polycarboxylic acid is ammonium dihydrogen citrate, and is purchased from Shanghai Source materials, Inc.
The nitrogen-containing compound is benzotriazole which is purchased from Cherokee Rose group in Germany.
The bactericide is obtained by compounding tetradecyl dimethyl benzyl ammonium chloride and cinnamyl aldehyde according to the weight ratio of 1: 0.6; wherein the tetradecyldimethylbenzylammonium chloride and the cinnamaldehyde are both purchased from Shanghai Michelin Biotech, Inc.
The dispersing agent is amino silicone oil which is purchased from Xinyue chemical organosilicon Co., Ltd and is of a KF-864 brand.
The ionic liquid was 1-dodecyl-3-methylimidazolium tetrafluoroborate, purchased from shanghai chengjie chemical co.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Example 5
Embodiment 5 provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: 4 parts of surfactant, 2 parts of metal ion chelating agent, 3 parts of polycarboxylic acid ammonium salt, 2 parts of nitrogen-containing compound, 1.5 parts of bactericide, 1.1 parts of dispersant, 0.7 part of ionic liquid and 75 parts of water.
The surfactant is obtained by compounding nonylphenol polyoxyethylene ether and perfluoropolyether ammonium carboxylate according to the weight ratio of 1: 1.3; the polyoxyethylene nonyl phenyl ether is purchased from ZiboHaijie chemical Co., Ltd, and the brand is TX-10; the ammonium perfluoropolyether carboxylate is purchased from Taicang Zhonghua environmental protection chemical Co.
The metal ion chelating agent is amino trimethylene phosphonic acid which is purchased from American chemical Co., Ltd, Changzhou and has the mark of GY-308.
The ammonium salt of a polycarboxylic acid is ammonium dihydrogen citrate, and is purchased from Shanghai Source materials, Inc.
The nitrogen-containing compound is benzotriazole which is purchased from Cherokee Rose group in Germany.
The bactericide is obtained by compounding tetradecyl dimethyl benzyl ammonium chloride and cinnamyl aldehyde according to the weight ratio of 1: 0.6; wherein the tetradecyldimethylbenzylammonium chloride and the cinnamaldehyde are both purchased from Shanghai Michelin Biotech, Inc.
The dispersing agent is amino silicone oil which is purchased from Xinyue chemical organosilicon Co., Ltd and is of a KF-864 brand.
The ionic liquid was 1-dodecyl-3-methylimidazolium tetrafluoroborate, purchased from shanghai chengjie chemical co.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Comparative example 1
Comparative example 1 provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: 0.1 part of surfactant, 2 parts of metal ion chelating agent, 3 parts of polycarboxylic acid ammonium salt, 2 parts of nitrogen-containing compound, 1.5 parts of bactericide, 1.1 parts of dispersant, 0.7 part of ionic liquid and 75 parts of water.
Comparative example 1 the components described were derived from example 5 only in parts by weight.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Comparative example 2
The comparative example 2 provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: 30 parts of surfactant, 2 parts of metal ion chelating agent, 3 parts of polycarboxylic acid ammonium salt, 2 parts of nitrogen-containing compound, 1.5 parts of bactericide, 1.1 parts of dispersant, 0.7 part of ionic liquid and 75 parts of water.
Comparative example 2 the components described are derived from example 5 only in parts by weight.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Comparative example 3
Comparative example 3 provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: 4 parts of surfactant, 2 parts of metal ion chelating agent, 3 parts of polycarboxylic acid ammonium salt, 2 parts of nitrogen-containing compound, 1.5 parts of bactericide, 1.1 parts of dispersant, 0.7 part of ionic liquid and 75 parts of water.
Comparative example 3 the rest of the components were obtained from the same sources as in example 5, except that the surfactant was a mixture of nonylphenol polyoxyethylene ether and perfluoropolyether ammonium carboxylate in a weight ratio of 1: 0.1.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Comparative example 4
Comparative example 4 provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: 4 parts of surfactant, 2 parts of metal ion chelating agent, 3 parts of polycarboxylic acid ammonium salt, 2 parts of nitrogen-containing compound, 1.5 parts of bactericide, 1.1 parts of dispersant, 0.7 part of ionic liquid and 75 parts of water.
Comparative example 4 the remaining components were derived from the same sources as in example 5, except that the surfactant was a mixture of nonylphenol polyoxyethylene ether and perfluoropolyether ammonium carboxylate at a weight ratio of 1: 15.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Comparative example 5
The comparative example 5 provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: 4 parts of surfactant, 2 parts of metal ion chelating agent, 3 parts of polycarboxylic acid ammonium salt, 2 parts of nitrogen-containing compound, 0.1 part of bactericide, 1.1 part of dispersant, 0.7 part of ionic liquid and 75 parts of water.
Comparative example 5 the components described are derived from example 5 only in parts by weight.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Comparative example 6
The comparative example 6 provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: 4 parts of surfactant, 2 parts of metal ion chelating agent, 3 parts of polycarboxylic acid ammonium salt, 2 parts of nitrogen-containing compound, 20 parts of bactericide, 1.1 parts of dispersant, 0.7 part of ionic liquid and 75 parts of water.
Comparative example 6 the components described are derived from example 5 only in parts by weight.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Comparative example 7
Comparative example 7 provides a neutral blocking remover for chemical oil recovery in oil field, which comprises the following components in parts by weight: 4 parts of surfactant, 2 parts of metal ion chelating agent, 3 parts of polycarboxylic acid ammonium salt, 2 parts of nitrogen-containing compound, 1.5 parts of bactericide, 0.05 part of dispersing agent, 0.7 part of ionic liquid and 75 parts of water.
Comparative example 7 the components described are derived from example 5 only in parts by weight.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Comparative example 8
The comparative example 8 provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: 4 parts of surfactant, 2 parts of metal ion chelating agent, 3 parts of polycarboxylic acid ammonium salt, 2 parts of nitrogen-containing compound, 1.5 parts of bactericide, 15 parts of dispersant, 0.7 part of ionic liquid and 75 parts of water.
Comparative example 8 the components described were derived from example 5 only in parts by weight.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Comparative example 9
Comparative example 9 provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: 4 parts of surfactant, 2 parts of metal ion chelating agent, 3 parts of polycarboxylic acid ammonium salt, 2 parts of nitrogen-containing compound, 1.5 parts of bactericide, 1.1 parts of dispersant, 0.01 part of ionic liquid and 75 parts of water.
Comparative example 9 the components described are derived from example 5 only in parts by weight.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Comparative example 10
The comparative example 10 provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: 4 parts of surfactant, 2 parts of metal ion chelating agent, 3 parts of polycarboxylic acid ammonium salt, 2 parts of nitrogen-containing compound, 1.5 parts of bactericide, 1.1 parts of dispersant, 15 parts of ionic liquid and 75 parts of water.
Comparative example 10 the components described are derived from example 5 only in parts by weight.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Comparative example 11
The comparative example 11 provides a neutral blocking remover for chemical oil recovery in an oil field, which comprises the following components in parts by weight: 4 parts of surfactant, 2 parts of metal ion chelating agent, 3 parts of polycarboxylic acid ammonium salt, 2 parts of nitrogen-containing compound, 1.5 parts of bactericide, 1.1 parts of dispersant, 15 parts of ionic liquid and 75 parts of water.
Comparative example 11 the components described were derived from example 5 except that the ionic liquid was 1-hexadecyl-3-methylimidazolium tetrafluoroborate, available from shanghai cheng jie chemical co.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Comparative example 12
Comparative example 12 provides a neutral blocking remover for chemical oil recovery in an oil field, comprising the following components in parts by weight: 4 parts of surfactant, 2 parts of metal ion chelating agent, 3 parts of polycarboxylic acid ammonium salt, 2 parts of nitrogen-containing compound, 1.5 parts of bactericide, 1.1 parts of dispersant, 15 parts of ionic liquid and 75 parts of water.
Comparative example 12 the components described were derived from example 5 except that the ionic liquid was 1-butyl-3-methylimidazolium tetrafluoroborate, purchased from shanghai cheng jie chemical co.
The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field is the same as that in the embodiment 1.
Evaluation of Performance
1. And (3) corrosion rate testing: the detection is carried out according to the 6.1 requirement in the cleaning quality standard of HG/T2387-2007 industrial equipment.
2. And (3) testing the descaling rate and the cleaning rate: the detection is carried out according to the 5.2.2 requirement in the cleaning quality standard of HG/T2387-2007 industrial equipment.
TABLE 1
Claims (2)
1. The neutral blocking remover for the chemical oil extraction of the oil field is characterized by comprising the following components in parts by weight: 4 parts of surfactant, 2 parts of metal ion chelating agent, 3 parts of polycarboxylic acid ammonium salt, 2 parts of nitrogen-containing compound, 1.5 parts of bactericide, 1.1 parts of dispersant, 75 parts of water and 0.7 part of ionic liquid;
the surfactant is nonylphenol polyoxyethylene ether and perfluoropolyether ammonium carboxylate according to the weight ratio of 1:1.3 compounding; the metal ion chelating agent is amino trimethylene phosphonic acid; the polybasic carboxylic acid ammonium salt is ammonium dihydrogen citrate; the nitrogen-containing compound is benzotriazole; the bactericide is obtained by compounding tetradecyl dimethyl benzyl ammonium chloride and cinnamyl aldehyde according to the weight ratio of 1: 0.6; the dispersing agent is amino silicone oil; the ionic liquid is 1-dodecyl-3-methylimidazole tetrafluoroborate.
2. The preparation method of the neutral blocking remover for the chemical oil recovery of the oil field according to claim 1, characterized by comprising the following steps: and sequentially adding a surfactant, a metal ion chelating agent, a polycarboxylic acid ammonium salt, a nitrogen-containing compound, a bactericide, a dispersing agent, an ionic liquid and water into a stirring tank according to a proportion at the temperature of 10-50 ℃ and under normal pressure, and stirring for 1-4 hours to obtain the neutral blocking remover for the chemical oil recovery of the oil field.
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| CN113185961A (en) * | 2021-04-12 | 2021-07-30 | 陕西靖瑞能源科技股份有限公司 | Anti-scaling neutral blocking remover and preparation method thereof |
| CN116854223B (en) * | 2023-09-04 | 2023-12-15 | 杭州尚善若水环保科技有限公司 | Combined medicament and process for preventing degradation of cationic polymeric flocculant after dissolution |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1703145A (en) * | 2002-10-10 | 2005-11-30 | 陶氏环球技术公司 | Fast dissolving solid ortho-phthalic aldehyde formulations |
| CN104194759A (en) * | 2014-09-23 | 2014-12-10 | 甘肃黑马石化工程有限公司 | Neutral blockage removing agent composition used for oil recovery formation in oilfield and preparation method thereof |
| CN105112036A (en) * | 2015-08-21 | 2015-12-02 | 中国石油集团渤海钻探工程有限公司 | Barium-strontium-calcium descaling and blockage removing agent for near-well area and preparing method of barium-strontium-calcium descaling and blockage removing agent |
| CN106867490A (en) * | 2017-01-18 | 2017-06-20 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of chelating de-plugging agent suitable for complicated fouling reservoir and preparation method thereof |
| CN107663446A (en) * | 2016-07-28 | 2018-02-06 | 中国石油化工股份有限公司 | A kind of oil base drilling fluid de-plugging agent and preparation method thereof |
| CN108623019A (en) * | 2018-05-29 | 2018-10-09 | 苏州佑君环境科技有限公司 | A kind of sea water desalination antisludging agent and preparation method thereof |
| CN108624312A (en) * | 2018-04-24 | 2018-10-09 | 长春市华泰石油科技开发有限公司 | Ternary composite drive well scale remover and its preparation method and application process |
| CN108929666A (en) * | 2018-06-25 | 2018-12-04 | 西南石油大学 | A kind of sour gas well efficient blockage removing agent |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7947629B2 (en) * | 2007-08-06 | 2011-05-24 | Schlumberger Technology Corporation | Method of acidizing sandstone formations |
| DK2371923T3 (en) * | 2010-04-01 | 2013-05-06 | Clariant Finance Bvi Ltd | deposition inhibitor |
-
2018
- 2018-12-29 CN CN201811631915.7A patent/CN109575894B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1703145A (en) * | 2002-10-10 | 2005-11-30 | 陶氏环球技术公司 | Fast dissolving solid ortho-phthalic aldehyde formulations |
| CN104194759A (en) * | 2014-09-23 | 2014-12-10 | 甘肃黑马石化工程有限公司 | Neutral blockage removing agent composition used for oil recovery formation in oilfield and preparation method thereof |
| CN105112036A (en) * | 2015-08-21 | 2015-12-02 | 中国石油集团渤海钻探工程有限公司 | Barium-strontium-calcium descaling and blockage removing agent for near-well area and preparing method of barium-strontium-calcium descaling and blockage removing agent |
| CN107663446A (en) * | 2016-07-28 | 2018-02-06 | 中国石油化工股份有限公司 | A kind of oil base drilling fluid de-plugging agent and preparation method thereof |
| CN106867490A (en) * | 2017-01-18 | 2017-06-20 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of chelating de-plugging agent suitable for complicated fouling reservoir and preparation method thereof |
| CN108624312A (en) * | 2018-04-24 | 2018-10-09 | 长春市华泰石油科技开发有限公司 | Ternary composite drive well scale remover and its preparation method and application process |
| CN108623019A (en) * | 2018-05-29 | 2018-10-09 | 苏州佑君环境科技有限公司 | A kind of sea water desalination antisludging agent and preparation method thereof |
| CN108929666A (en) * | 2018-06-25 | 2018-12-04 | 西南石油大学 | A kind of sour gas well efficient blockage removing agent |
Non-Patent Citations (1)
| Title |
|---|
| 中性解堵剂的研制及在靖安油田的应用;郭子龙 等;《第十四届宁夏青年科学家论坛论文集》;20180724;第127页左栏第1部分、右栏第1.1.2部分,第128页右栏第1.3.2部分、第2部分 * |
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