CN104152127A - Multifunctional cleaning agent for oil fields, preparation method therefor and applications thereof - Google Patents
Multifunctional cleaning agent for oil fields, preparation method therefor and applications thereof Download PDFInfo
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- CN104152127A CN104152127A CN201310176502.5A CN201310176502A CN104152127A CN 104152127 A CN104152127 A CN 104152127A CN 201310176502 A CN201310176502 A CN 201310176502A CN 104152127 A CN104152127 A CN 104152127A
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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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- 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
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
Abstract
The invention relates to a multifunctional cleaning agent for oil fields, a preparation method therefor and applications thereof. The cleaning agent is composed of 0.2%-1.0% of composite nonylphenol polyoxyethylene ether active agents, 0.2%-1.0% of composite quaternary ammonium salt positive ion active agent chlorides, 0%-1.0% of composite acid pickling corrosion inhibitors, 0%-1.0% of composite Fe ion chelating agents, 0%-10.0% of organic carboxylic ester, and the balance being water. The cleaning agent has good acidolysis solution removing effects on inorganic chemistry scales of CaCO3, Fe2O3 and FeS at the temperature of 60-80 DEG C, has dispersion and melting effects on oil stains, wax scales and heavy oil stains, has a killing effects on oil field fungi, has a peeling effect on sticky dirt, and is suitable for cleaning of devices of oil field production well shafts, gathering pipelines, oil and water separation settling tanks, flocculation settling tanks, oil storage tanks, sewage storage tanks and the like.
Description
Technical field:
The present invention relates to multifuctional cleaning agent and preparation and application for a kind of oil field.Be applicable to oil extraction in oil field well shaft, the cleaning of the equipment such as gathering line, oily water separation slurry tank, flocculating settling tank, storage tank, sewage storage cylinder.
Background technology:
Oil-field development facts have proved, oil field is opened hydrocarbon zone from first well and is produced the whole process that this oil-field development finishes, fluid in oil reservoir (oil, gas, water) flows out from hydrocarbon zone, through pit shaft, well head, to surface gathering system, at the position of these various flows warps, all can produce fouling.In addition, oil field produced water treatment system also finds that there is scale formation generation often.
1. producing well pit shaft situation
Oil well is in long-term production process, the one, individual layer (single producing position) producing well, annular space between producing well bottom oil pipe and sleeve pipe, the unexpected reduction of pressure and temperature while entering shaft bottom from oil reservoir by perforation eye due to resident fluid, broken the chemical equilibrium of fluid in inside, stratum, there is scale formation, in the pit shaft of whole producing well section, comprise that all down-holes facility such as sand sediment pipe, internal surface of sleeve pipe and oil pipe inside and outside wall, oil pump piston, screen casing eyelet, sucker rod are all fouling object.From sampling hut's inner analysis: oil field single producing well pit shaft inorganic scale is with CaCO
3, Fe
2o
3, FeS and clay shale the most common, uncommon with CaSO
4and BaSO
4in the majority, organic deposition comprises grease, wax dirt and heavy oil stain.
The 2nd, concerning the commingled oil well that comprises two or more different layers positions, more singly adopt well situation complexity, except CaCO
3, Fe
2o
3, outside FeS and clay shale dirt, simultaneously with CaSO
4, BaSO
4deng fouling.
The 3rd, the extraneous water of bringing in stimulation of well (pressure break, acidifying, well-flushing etc.), the precipitation fouling that extraneous water and output water are incompatible and produce, this type of dirty overwhelming majority is with CaCO
3dirt is main.
Dirty sample in pit shaft is cut and observed and acidolysis analysis, deposition dirt on the pit shaft facility mixing dirt that inorganic chemistry dirt, organic deposition and clay shale dirt etc. are repeatedly interweaved and are bundled together often, inclusion, by inner and be laminate structure outward, has strikingly color boundary line between layers.
The 4th, in Produced Liquid, often contain sulphate reducing bacteria (SRB), iron bacteria (IB) and saprophytic microorganism (TGB).Sulphate reducing bacteria can be sulfide (S by sulfate reduction
2-), iron bacteria is that a kind of aerobic bacteria can be by Fe
2+be oxidized to Fe
3+(4Fe
2++ O
2+ 2H
2o=4Fe
3++ 4OH
-), also can make iron and steel corrode (Fe+O
2+ 2H
2o=2Fe
2++ 4OH
-), their existence has aggravated the corrosion of output water to down-hole steel, and the existence of iron bacteria can provide anaerobic environment to sulphate reducing bacteria, promotes S
2-generation, and then promote the generation of FeS to accelerate the corrosive nature to iron and steel.Saprophytic microorganism (genus aerobic bacteria) is a kind of mixing thalline, the mucus that they produce can be sticked together dissimilar dirty thing and form the inclusion of the stack that is interweaved, mucus also makes dirty thing easily stick on the inside and outside wall of down-hole facility in addition, because inclusion has mucus adhesion between layers, its ultimate compression strength is increased, strengthen mechanical cleaning difficulty.
2. surface gathering system situation
Surface gathering system situation and producing well pit shaft situation are similar, organic deposition and inorganic scale be interweaved parcel dirty type very common, exist equally sulphate reducing bacteria, iron bacteria and saprophytic microorganism, but sulphate reducing bacteria can be die in the situation that gathering system end exposes to the sun oxygen.In fact, surface gathering system fouling is the continuity of producing well pit shaft fouling; In the ordinary course of things, oil well fouling is very not serious, and fouling mainly occurs in pit shaft, and the comparatively serious oil well of pit shaft fouling, fouling often can be extended to gathering line and whole surface gathering system oily, water central treatment station.
3. ground sewage (oil field extracted water) treatment system situation
With whole field scale and intermediary and later stages oilfield exploitation popularization, the quantum of output of oilfield sewage (recovered water) also strengthens thereupon, because oilfield sewage can bring harm to people and animals and environment, therefore need carry out floor treatment, is recycled into oil recovery stratum.Ground sewage treatment system situation and pit shaft and surface gathering system situation are similar, because Sewage treatment systems has been collected the recovered water of nearly all different layers position in its region, between the recovered water of different layers position, be incompatible mutually and cause serious precipitation fouling, often even more serious than pit shaft and surface gathering system, also there is the phenomenon of clay shale dirt and oil field mushroom in the while.
The existence of oilfield scaling and oil field mushroom, can bring very big harm to field produces, processes not in time the badly damaged oil field equipment of meeting, has a strong impact on field produces.So it is necessary to study a kind of multifuctional cleaning agent that can clean inorganic chemistry dirt, organic deposition dirt and inorganic clay shale dirt.
Long celebrating oil field, at the seventies initial stage of development in last century, just has the oil wells such as record proof ridge 201,206 just to produce scale formation at the operation initial stage, has also just opened thus clear (preventing) dirt research in long celebrating oil field.Its content mainly comprises that take acidity that hydrochloric acid is host cleans research (in order to molten divided by CaCO
3be main inorganic chemistry dirt), the inner complex of the take alkalescence that is host cleans research (in order to molten divided by CaSO
4, BaSO
4be main sulfate scale) and take that compounded organic solvent is host in order to remove grease, wax dirt and heavy oil stain, wash down research as object organic deposition.Long celebrating oil field development take acidic cleaner that hydrochloric acid (5～15%) is host, alkaline cleaner CQ-3 that the inner complex of take is host and with composite organic washing agent forming such as toluene, dimethylbenzene, kerosene, diesel oil, ethers mutual solvents, their oil-field development that is applied as has produced active effect.
The acidic cleaner that the hydrochloric acid of take is host is mainly for CaCO
3be main inorganic chemistry dirt, the major advantage of this type of clean-out system is that cleaning speed is fast, and working cycle is short, and corresponding shortcoming also clearly, and that is exactly very serious to the corrosion of steel, also very strict to operating personnel's requirement of shelter.Take compounded organic solvent as host is in order to clean grease, wax dirt and heavy oil stain as main organic deposition, its conventional main organic solvent has the arenes such as benzene,toluene,xylene, ethylbenzene, also have in addition the petroleum fractionss such as kerosene, diesel oil, be no matter arene or petroleum fractions class, its shortcoming is that people and animals and environment are had to very large harm, and cost is also very high.From each self-stip object, the simultaneous phenomenon of inorganic chemistry dirt, clay shale dirt and organic deposition is seldom taken into account in above two class snaking researchs, to cleaning the three large bacteriums that exist in environment, be also wanting in consideration in addition, thereby study a kind of inorganic chemistry dirt (CaCO that takes into account
3, Fe
2o
3, FeS etc.), the multifuctional cleaning agent of clay shale dirt and organic deposition is necessary.
Summary of the invention:
The object of this invention is to provide a kind of oil field clean-out system and preparation thereof and application, this clean-out system is under 60～80 ℃ of temperature condition, to CaCO
3, Fe
2o
3, FeS inorganic chemistry dirt has good acidolysis molten except effect, and grease, wax dirt and heavy oil stain are had and disperseed and melting, kill in addition the large mushroom in oil field three and peel off the effect that sticks mud, be a kind of Multi-functional oil field clean-out system.Be applicable to oil extraction in oil field well shaft, the cleaning of the equipment such as gathering line, oily water separation slurry tank, flocculating settling tank, storage tank, sewage storage cylinder.
A kind of multifuctional cleaning agent that is applicable to clean oil well pit shaft, gathering line, oily water separation slurry tank, flocculating settling tank, storage tank, sewage storage cylinder etc. of the present invention, it is a kind of composition, formula has considered to exist in cleaning environment the factors such as inorganic chemistry dirt, clay shale dirt and organic mixing dirt and oil field mushroom, the etching problem when addle while also having considered technically to clean pit shaft is poured in down a chimney phenomenon and cleaning equipment simultaneously, this composition can be miscible with water.
Oil field of the present invention by each weight percentages of components of multifuctional cleaning agent is:
A, compound polyoxyethylene nonylphenol ether promoting agent (grease, wax dirt and heavy oil stain dispersion agent), 0.2%～1.0%;
B, compound quaternary ammonium salt cationic active agent muriate (infiltration, sterilization, adhesive mud remover), 0.2%～1.0%;
C, Compound-acid pickling inhibitor, 0%～1.0%;
D, compound Fe ion chelating agent, 0%～1.0; %
E, organic carboxylic ester, 0%～10.0%;
F, all the other are water,
Each weight percentages of components sum is absolutely.
This system is in the situation that organic carboxylic ester exists, and under 60～80 ℃ of temperature condition, acid decomposable is with CaCO
3be main inorganic scale, dispersion, solubilising and melting grease, wax dirt and heavy oil stain, and infiltration, inorganic foundry loam dirt is peeled off in dispersion and sulphate reducing bacteria is removed in sterilization, the large mushroom of iron bacteria and saprophytic microorganism oil field three.The CO that can produce with organic acid acetic hydrolysis because of the existence of promoting agent
2the acid that gas and organic acid acetic hydrolysis produce and the CaCO in dirty thing
3the CO that reaction is emitted
2gas produces foam when scavenging solution circulates, and the viscosity of scavenging solution is raise, and density reduces, and makes it take thing ability and strengthens, the reverse-filling ability while simultaneously having promoted well-flushing; In addition, in cleaning process, acid is to be progressively hydrolyzed generation, less than hydrochloric acid cleaning agent to the corrosion of iron and steel.
Each component forms:
Compound polyoxyethylene nonylphenol ether promoting agent is any two kinds of mixtures in Nonyl pheno (7) ether, Nonyl pheno (9) ether, Nonyl pheno (10) ether, Nonyl pheno (15) ether, and weight ratio is 1: 1.
Compound quaternary ammonium salt cationic active agent muriate is any two kinds of mixtures in Dodecyl trimethyl ammonium chloride, dodecyl benzyl dimethyl ammonium chloride, tetradecyl dimethyl benzyl ammonium chloride, cetalkonium chloride, and weight ratio is 1: 1.
Compound-acid pickling inhibitor is propiolic alcohol (Dongbei Pharmaceutical General Factory) and hexahydroaniline mixture, and weight ratio is 1: 1.
Compound Fe ion chelating agent is the mixture of citric acid and trolamine, and mixture pH value is 7.
Organic carboxylic ester is methyl-chloroformate, Vinyl chloroformate or mixture that the two mixes mutually with arbitrary proportion.
The preparation method of compounding mixture:
Prepare compound polyoxyethylene nonylphenol ether promoting agent: with any two kinds in Nonyl pheno (7) ether, Nonyl pheno (9) ether, Nonyl pheno (10) ether, Nonyl pheno (15) ether, be to mix at 1: 1 by weight.
Prepare compound quaternary ammonium salt cationic active agent muriate: with any two kinds in Dodecyl trimethyl ammonium chloride, dodecyl benzyl dimethyl ammonium chloride, tetradecyl dimethyl benzyl ammonium chloride, cetalkonium chloride, be to mix at 1: 1 by weight.
Prepare Compound-acid pickling inhibitor: with propiolic alcohol and hexahydroaniline, be to mix at 1: 1 by weight.
Prepare compound Fe ion chelating agent: with citric acid and trolamine, by mixture pH, be 7 to mix.
Prepare compound organic carboxylic ester: with methyl-chloroformate and Vinyl chloroformate, by any weight ratio, mix.
Using method: before use, to get assay in dirty specimen chamber to cleaning object, determine composition and the content of dirty sample, then go out each composition total amount of dirty thing according to fouling area and thickness rough calculation, according to the dirty thing total amount calculating, determine desired concn and the liquid measure of each component in scavenging solution formula.If result of laboratory test shows inorganic chemistry dirt content very low (1% left and right), in formula, just need not add organic carboxylic ester, restrainer, Fe ion chelating agent.Be noted that in addition in no matter filling a prescription have or not organic acid acetic, no matter what cleaning object is, all to be heated in use 60 ℃～80 ℃ and cycling and reutilization, while cleaning pit shaft and gathering line, dosing amount should be 1.5～2.0 times of its volume, reason be to have enough liquid measures to circulate (by heat, wash pump truck heating cycle, while cleaning pit shaft, oil pipe can be used as circulation injection string and clean himself when cleaning pit shaft; Hot scavenging solution immersion treatment at the scene for sucker rod, oil well pump etc.), the benefit of circulation is that limit cleaning sideband is walked dirty thing, dirt thing precipitates and (or) traps to remove at liquid level in land subsidence pond, the working fluid heating except after de-sludging thing is continued to recycle simultaneously; While cleaning slurry tank and sewage storage cylinder, dosing amount should be able to meet the height of hard scale thing on covering tank skin surface is advisable, and object is that the mode of soaking contact is reacted and allowed it become loose under 60 ℃～80 ℃ conditions, with hydraulic giant spraywashing liquid, is cleaned up; According to practical experience measuring and calculating, in the situation that above dosing amount is satisfied, the hydrolysate of 10.0% organic carboxylic ester completely can be molten divided by CaCO
3it is main inorganic chemistry dirt.While cleaning storage tank, dosing amount is 1/2 of storage tank volume, with hydraulic giant spraywashing dirt heating cycle utilization.Oily water separation slurry tank, flocculating settling tank, storage tank, sewage preserve
Invention effect:
Described composition is applicable to oil extraction in oil field well shaft, the cleaning of the equipment such as gathering line, oily water separation slurry tank, flocculating settling tank, storage tank, sewage storage cylinder.Under 60 ℃～80 ℃ conditions, can be molten except CaCO
3, Fe
2o
3, the inorganic chemistry such as FeS dirt, and can dispersion, solubilising, melting grease, wax dirt and heavy oil stain and infiltration peel off the effects such as clay shale dirt, sterilization.Especially when cleaning pit shaft, gas and the tensio-active agent in system that reaction is emitted are circulating middle generation foam, have improved the thing ability of taking and the reverse-filling ability of flushing fluid; In addition, in cleaning process, acid is to be progressively hydrolyzed generation, less than hydrochloric acid cleaning agent to the corrosion of iron and steel.Lab-evaluation shows, the scavenging solution 1000ml that contains 10.0% organic acid acetic can dissolve the CaCO of 52.4～45.1 grams under 60 ℃～80 ℃ conditions
3reagent.To the sheet dirt (thick 1～1.5mm, three layers of laminate structure) of Wu 12-10 Jing Youguanwaibichu, meltage is between 39.2～33.3 grams, and insolubles is foundry loam and sand, inorganic chemistry dirt molten except rate be 100%.Evaluation result shows that composition has the molten ability of good acid.
Embodiment:
Embodiment 1
In dirt thing, only contain a grease, wax dirt and (or) heavy oil stain:
1. prepare compound polyoxyethylene nonylphenol ether tensio-active agent: with Nonyl pheno (7) ether and Nonyl pheno (15) ether, be to mix at 1: 1 by weight.
2. prepare compound quaternary ammonium salt cats product muriate: with Dodecyl trimethyl ammonium chloride and cetalkonium chloride, be to mix at 1: 1 by weight.
3. prepare grease, wax dirt and (or) heavy oil stain clean-out system: first in the enamel reaction still of 1000 liters, add the approximately water of its volume 1/2, 1.0% the compound polyoxyethylene nonylphenol ether nonionogenic tenside that under agitation progressively adds in 1. preparation, add 2/3 place that adds water to its volume in backward reactor, stir, measure the pH value of mixing solutions, under agitation slowly add in 2. 1.0% compound quaternary ammonium salt cats product muriate of preparation, finally add water to 1000 liters of places, stir, measure the pH value of mixing solutions, both obtained finished product.
Described composition is for oil extraction in oil field well shaft, the cleaning of the equipment such as gathering line, oily water separation slurry tank, flocculating settling tank, storage tank, sewage storage cylinder, under 60 ℃～80 ℃ conditions, recycle, using dense is 100%, makes fluid volume: for pit shaft and gathering line, be its volume 1.5～2.0 times, for storage tank, being its volume, 1/2 times, the height that can cover hard scale thing on tank skin surface to slurry tank and sewage storage cylinder are advisable.
Embodiment 2
In dirt thing, both contained CaCO
3in inorganic chemistry dirt, contain again the organic depositions such as grease, wax dirt and (or) heavy oil stain:
1. prepare compound polyoxyethylene nonylphenol ether tensio-active agent: with Nonyl pheno (9) ether and Nonyl pheno (10) ether, be to mix at 1: 1 by weight.
2. prepare compound quaternary ammonium salt cats product muriate: with dodecyl benzyl dimethyl ammonium chloride and tetradecyl dimethyl benzyl ammonium chloride, be to mix at 1: 1 by weight.
3. prepare Compound-acid pickling inhibitor: with propiolic alcohol and hexahydroaniline, be to mix at 1: 1 by weight.
4. prepare compound Fe ion chelating agent: powdery citric acid is added in pulpous state trolamine and mixed, and surveying mixture PH is 7.
5. prepare inorganic chemistry dirt (CaCO
3deng) and the mixing scale washing agent such as grease, wax dirt and (or) heavy oil stain: first in the enamel reaction still of 1000 liters, add the approximately water of its volume 1/2,0.2% the compound polyoxyethylene nonylphenol ether nonionogenic tenside that under agitation progressively adds in 1. preparation, add 2/3 place that adds water to its volume in backward reactor, stir, measure the pH value of mixing solutions, under agitation slowly add in 2. 0.2% compound quaternary ammonium salt cats product muriate of preparation, stir, measure the pH value of mixing solutions.Then add successively in 3. 0.3% Compound-acid pickling inhibitor of preparation, 4. in 0.3% compound Fe ion chelating agent of preparation and 5.0% methyl-chloroformate, finally add water to 1000 liters of places, stir, measure the pH value of mixing solutions, both must finished product.
Described composition is for oil extraction in oil field well shaft, the cleaning of the equipment such as gathering line, oily water separation slurry tank, flocculating settling tank, storage tank, sewage storage cylinder, under 60 ℃～80 ℃ conditions, recycle, using dense is 100%, makes fluid volume: for pit shaft and gathering line, be its volume 1.5～2.0 times, for storage tank, being its volume, 1/2 times, the height that can cover hard scale thing on tank skin surface to slurry tank and sewage storage cylinder are advisable.
Embodiment 3
Existing CaCO in dirt thing
3in inorganic chemistry dirt, there are again the organic depositions such as grease, wax dirt and (or) heavy oil stain:
1. prepare compound polyoxyethylene nonylphenol ether tensio-active agent: with Nonyl pheno (9) ether and Nonyl pheno (15) ether, be to mix at 1: 1 by weight.
2. prepare compound quaternary ammonium salt cats product muriate: dodecyl benzyl dimethyl ammonium chloride and cetalkonium chloride are to mix at 1: 1 by weight.
3. prepare Compound-acid pickling inhibitor: with propiolic alcohol and hexahydroaniline, be to mix at 1: 1 by weight.
4. prepare compound Fe ion chelating agent: powdery citric acid is added in pulpous state trolamine and mixed, and surveying mixture PH is 7.
5. prepare inorganic chemistry dirt (CaCO
3deng) and the mixing scale washing agent such as grease, wax dirt and (or) heavy oil stain: first in the enamel reaction still of 1000 liters, add the approximately water of its volume 1/2,0.3% the compound polyoxyethylene nonylphenol ether nonionogenic tenside that under agitation progressively adds in 1. preparation, add 2/3 place that adds water to its volume in backward reactor, stir, measure the pH value of mixing solutions, under agitation slowly add in 2. 0.3% compound quaternary ammonium salt cats product muriate of preparation, stir, measure the pH value of mixing solutions.Then add successively in 3. 0.5% Compound-acid pickling inhibitor of preparation, prepare 0.5% compound Fe ion chelating agent and 7.5% Vinyl chloroformate in 4., finally add water to 1000 liters of places, stir, measure the pH value of mixing solutions, both must finished product.
Described composition is for oil extraction in oil field well shaft, the cleaning of the equipment such as gathering line, oily water separation slurry tank, flocculating settling tank, storage tank, sewage storage cylinder, under 60 ℃～80 ℃ conditions, recycle, using dense is 100%, makes fluid volume: for pit shaft and gathering line, be its volume 1.5～2.0 times, for storage tank, being its volume, 1/2 times, the height that can cover hard scale thing on tank skin surface to slurry tank and sewage storage cylinder are advisable.
Embodiment 4
Existing CaCO in dirt thing
3in inorganic chemistry dirt, there are again the organic depositions such as grease, wax dirt and (or) heavy oil stain:
1. prepare compound polyoxyethylene nonylphenol ether tensio-active agent: with Nonyl pheno (7) ether and Nonyl pheno (10) ether, be to mix at 1: 1 by weight.
2. prepare compound quaternary ammonium salt cats product muriate: Dodecyl trimethyl ammonium chloride and tetradecyl dimethyl benzyl ammonium chloride are to mix at 1: 1 by weight.
3. prepare Compound-acid pickling inhibitor: with propiolic alcohol and hexahydroaniline, be to mix at 1: 1 by weight.
4. prepare compound Fe ion chelating agent: powdery citric acid is added in pulpous state trolamine and mixed, and surveying mixture PH is 7.
5. prepare compound organic carboxylic ester: with methyl-chloroformate and Vinyl chloroformate, be to mix at 1: 1 by weight
6. prepare inorganic chemistry dirt (CaCO
3deng) and the mixing scale washing agent such as grease, wax dirt and (or) heavy oil stain: first in the enamel reaction still of 1000 liters, add the approximately water of its volume 1/2,0.5% the compound polyoxyethylene nonylphenol ether nonionogenic tenside that under agitation progressively adds in 1. preparation, add 2/3 place that adds water to its volume in backward reactor, stir, measure the pH value of mixing solutions, under agitation slowly add in 2. 0.5% compound quaternary ammonium salt cats product muriate of preparation, stir, measure the pH value of mixing solutions.Then add successively in 3. 1.0% Compound-acid pickling inhibitor of preparation, prepare 10.0% compound organic carboxylic ester of preparation in 1.0 compound Fe ion chelating agent and 5. in 4., finally add water to 1000 liters of places, stir, measure the pH value of mixing solutions, both obtained finished product.
Described composition is for oil extraction in oil field well shaft, the cleaning of the equipment such as gathering line, oily water separation slurry tank, flocculating settling tank, storage tank, sewage storage cylinder, under 60 ℃～80 ℃ conditions, recycle, using dense is 100%, makes fluid volume: for pit shaft and gathering line, be its volume 1.5～2.0 times, for storage tank, being its volume, 1/2 times, the height that can cover hard scale thing on tank skin surface to slurry tank and sewage storage cylinder are advisable.
Claims (8)
1. an oil field multifuctional cleaning agent, is characterized in that: each weight percentages of components is:
A, compound polyoxyethylene nonylphenol ether promoting agent 0.2%～1.0%;
B, compound quaternary ammonium salt cationic active agent muriate 0.2%～1.0; %
C, Compound-acid pickling inhibitor, 0%～1.0%;
D, compound Fe ion chelating agent, 0%～1.0%;
E, organic carboxylic ester, 0%～10.0%;
F, all the other are water,
Each weight percentages of components sum is absolutely.
2. a kind of oil field according to claim 1 multifuctional cleaning agent, it is characterized in that: compound polyoxyethylene nonylphenol ether promoting agent is any two kinds of mixtures in Nonyl pheno (7) ether, Nonyl pheno (9) ether, Nonyl pheno (10) ether, Nonyl pheno (15) ether, and weight ratio is 1: 1.
3. a kind of oil field according to claim 1 multifuctional cleaning agent, it is characterized in that: compound quaternary ammonium salt cationic active agent muriate is any two kinds of mixtures in Dodecyl trimethyl ammonium chloride, dodecyl benzyl dimethyl ammonium chloride, tetradecyl dimethyl benzyl ammonium chloride, cetalkonium chloride, and weight ratio is 1: 1.
4. a kind of oil field according to claim 1 multifuctional cleaning agent, is characterized in that: Compound-acid pickling inhibitor is propiolic alcohol and hexahydroaniline mixture, and weight ratio is 1: 1.
5. a kind of oil field according to claim 1 multifuctional cleaning agent, is characterized in that: compound Fe ion chelating agent is the mixture of citric acid and trolamine, and mixture pH value is 7.
6. a kind of oil field according to claim 1 multifuctional cleaning agent, is characterized in that: organic carboxylic ester is the mixture that methyl-chloroformate, Vinyl chloroformate mix with arbitrary proportion mutually with the two.
7. a preparation method for multifuctional cleaning agent for a kind of oil field claimed in claim 1, is characterized in that:
(1) prepare compound polyoxyethylene nonylphenol ether promoting agent: with any two kinds in Nonyl pheno (7) ether, Nonyl pheno (9) ether, Nonyl pheno (10) ether, Nonyl pheno (15) ether, be to mix at 1: 1 by weight;
(2) prepare compound quaternary ammonium salt cationic active agent muriate: with any two kinds in Dodecyl trimethyl ammonium chloride, dodecyl benzyl dimethyl ammonium chloride, tetradecyl dimethyl benzyl ammonium chloride, cetalkonium chloride, be to mix at 1: 1 by weight;
(3) prepare Compound-acid pickling inhibitor: with propiolic alcohol and hexahydroaniline, be to mix at 1: 1 by weight.
(4) prepare compound Fe ion chelating agent: powdery citric acid is added in pulpous state trolamine, and surveying mixture pH is 7;
(5) prepare compound organic carboxylic ester: with methyl-chloroformate and Vinyl chloroformate, by any weight ratio, mix;
(6) prepare multifuctional cleaning agent: first in anticorrosion preparation container, add part water, then add compound polyoxyethylene nonylphenol ether promoting agent, stir, measure the pH value of solution; Add again after part water, add compound quaternary ammonium salt cationic active agent muriate, stir, measure the pH value of solution; Then add successively Compound-acid pickling inhibitor, compound Fe ion chelating agent and organic carboxylic ester or compound organic carboxylic ester, finally add residue water, stir, measure the pH value of solution, both obtained oil field multifuctional cleaning agent.
8. an application for multifuctional cleaning agent for a kind of oil field claimed in claim 1, is characterized in that: for oil extraction in oil field well shaft, and the cleaning of gathering line, oily water separation slurry tank, flocculating settling tank, storage tank, sewage storage cylinder, the CaCO of removing equipment
3, Fe
2o
3, FeS inorganic chemistry dirt, grease, wax dirt and heavy oil stain, and kill the large mushroom in oil field three and peel off glutinous mud, under 60 ℃～80 ℃ conditions, recycle, working concentration is 100%; Make fluid volume: pit shaft and gathering line are 1.5～2.0 times of its volume; Storage tank is 1/2 times of its volume; Slurry tank and sewage storage cylinder are for covering the height of hard scale thing on tank skin surface.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106085394A (en) * | 2016-06-07 | 2016-11-09 | 中国石油天然气股份有限公司 | Second class reservoir injection well composite blockage relieving agent |
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| CN106434030A (en) * | 2016-09-19 | 2017-02-22 | 中国石油化工股份有限公司 | Cleaning agent applicable to viscous sulfur-bearing scale in high sulfur gas field gathering and transportation system |
| CN107513381A (en) * | 2016-08-31 | 2017-12-26 | 中国石油天然气股份有限公司 | A kind of Solid Free workover fluid and its compound method and application method |
| CN108070466A (en) * | 2017-12-21 | 2018-05-25 | 大庆吉益来科技有限公司 | A kind of oil field oil sludge cleaning agent and preparation method |
| CN110257034A (en) * | 2019-07-12 | 2019-09-20 | 中国石油化工股份有限公司 | A kind of water mixing pipeline snaking de-plugging agent and its plug-removing device |
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| CN112410004A (en) * | 2020-12-01 | 2021-02-26 | 成都欣明化工有限公司 | Novel gas well blocking remover |
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| CN106147743A (en) * | 2015-04-23 | 2016-11-23 | 中国石油天然气股份有限公司 | A kind of petroleum-gas fiedl acid stimulation injection agent and preparation method thereof |
| CN106085394A (en) * | 2016-06-07 | 2016-11-09 | 中国石油天然气股份有限公司 | Second class reservoir injection well composite blockage relieving agent |
| CN106085394B (en) * | 2016-06-07 | 2019-10-18 | 中国石油天然气股份有限公司 | Second class reservoir injection well composite blockage relieving agent |
| CN107513381A (en) * | 2016-08-31 | 2017-12-26 | 中国石油天然气股份有限公司 | A kind of Solid Free workover fluid and its compound method and application method |
| CN107513381B (en) * | 2016-08-31 | 2020-07-10 | 中国石油天然气股份有限公司 | Solid-free workover fluid and preparation method and use method thereof |
| CN106434030A (en) * | 2016-09-19 | 2017-02-22 | 中国石油化工股份有限公司 | Cleaning agent applicable to viscous sulfur-bearing scale in high sulfur gas field gathering and transportation system |
| EA035672B1 (en) * | 2016-11-30 | 2020-07-24 | Петрочайна Компани Лимитед | Cleaning agent for removing viscous gelled deposits, preparation method and use thereof |
| CN108070466A (en) * | 2017-12-21 | 2018-05-25 | 大庆吉益来科技有限公司 | A kind of oil field oil sludge cleaning agent and preparation method |
| CN110257034A (en) * | 2019-07-12 | 2019-09-20 | 中国石油化工股份有限公司 | A kind of water mixing pipeline snaking de-plugging agent and its plug-removing device |
| CN110564395A (en) * | 2019-09-30 | 2019-12-13 | 新疆准东准盈技术有限责任公司 | preparation method of blocking remover for oil extraction |
| CN110711690A (en) * | 2019-10-17 | 2020-01-21 | 大港油田集团有限责任公司 | Underwater coating anticorrosion process for inner walls of casing pipes of oil production well and water injection well |
| CN112410004A (en) * | 2020-12-01 | 2021-02-26 | 成都欣明化工有限公司 | Novel gas well blocking remover |
| CN113604207A (en) * | 2021-09-10 | 2021-11-05 | 陕西延长石油油田化学科技有限责任公司 | Cleaning paraffin remover for oil field and preparation method thereof |
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