CN104194757A - Neutral blockage removing agent composition used for oilfield mechanical recovery well and preparation method thereof - Google Patents
Neutral blockage removing agent composition used for oilfield mechanical recovery well and preparation method thereof Download PDFInfo
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- CN104194757A CN104194757A CN201410489225.8A CN201410489225A CN104194757A CN 104194757 A CN104194757 A CN 104194757A CN 201410489225 A CN201410489225 A CN 201410489225A CN 104194757 A CN104194757 A CN 104194757A
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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 neutral blockage removing agent composition used for a mechanical recovery well in an oilfield. The neutral blockage removing agent composition is prepared from the following components in parts by weight: 16-20 parts of polyepoxysuccinic acid amine, 7-12 parts of hydroxyethylidene dipllosphate sodium, 21-25 parts of divinyl pentaacetic acid amine, 20-25 parts of hydroxyl ammonium acetate, 12-16 parts of activated attapulgite, 21-25 parts of ammonium persulfate, 9-12 parts ofdicyclohexyl sulfobutanedioate sodium, 7-9 parts of butyl lactate, 0.2-0.3 part of vanadium pentoxide, 5-8 parts of straight chain sodium dodecylbenzenesulfonate, 10-14 parts of nitrilotriacetic acid sodium salt, 4-7 parts of urotropin and 0.1-0.3 part of glycerin fatty acid ester. The neutral blockage removing agent composition is suitable for scale removal and blockage removal of an oil pumping unit well and a screw pump well, can effectively control the reaction speed of the blockage removing agent and the scale of the oil pumping unit well and the scaled screw pump well, and prevent the falling-off of big scale residues to result in the secondary blockage of the mechanical recovery well and an oil recovery pump thereof, has high blockage removal speed, is neutral and is free of corrosion; the waste liquid for blockage removal does not need to be discharged onto the ground to be subjected to sewage treatment, the blockage removal time does not exceed 24 hours, and the effect of safe and corrosion-free blockage removal is achieved.
Description
Technical field
Patent of the present invention relates to the auxiliary agent that a kind of oil extraction in oil field is used, and is specifically related to the neutral descaling and blockage relieving agent composition of a kind of oil field machine-pumped oil well, the invention still further relates to the preparation method of the neutral descaling and blockage relieving agent composition of oil field machine-pumped oil well.
Background technology
Oil extraction in oil field enters the high water-cut development stage, and ternary composite driving is one of important technology guaranteeing continuously steady production.Alkaline surfactant polymer flooding oil-field, by add the polyacrylamide polymers of a certain amount of petroleum-sulfonate tensio-active agent, caustic soda and macromolecule in injected water, significantly reduce oil water interfacial tension, increase the viscosity of injected water, thereby reduce profit mobility ratio, expand oil reservoir both macro and micro swept volume, further drive irreducible oil, significantly reduce remaining oil saturation, improve oil displacement efficiency and oil recovery factor.Interfacial tension is lower, and the amplitude that reduces remaining oil saturation is larger, and the amplitude that improves oil displacement efficiency and recovery ratio is just larger.Ternary composite driving has been obtained the immense success that improves recovery ratio 20% than water drive, for oil extraction in oil field keeps extended high rate, stable yields, has opened up a kind of novel method.
In the prime stratum water of oil field, all contain Ca
2+and Mg
2+deng polyvalent ion, in addition, conventionally due to the mineralizer in injected water and Ca
2+and Mg
2+deng polyvalent ion all lower than prime stratum water, therefore under the effect of cationic exchange, the content of these polyvalent metal ions do not reduce or reduction amplitude little.Obviously, containing in the ternary composite displacement system of alkali, because pH value sharply rises to 12～14 by 7～8.5, cause occurring in oil-reservoir water the fouling of carbonate, silicate and vitriol.Again owing to using the precipitation dirt of the divalence sulfonated petro-leum that in ternary composite displacement system, sodium alkyl benzene sulfonate produces and the polymer material dirt that polyacrylamide produces in oil recovery process.Its consequence is: fouling precipitation is stopped up oil reservoir; After foulant precipitation, in recovery well oil pipe and gathering line, easily cause line clogging and oil extraction pump cisco unity malfunction.
In ternary composite driving field test, find, distinct issues are that the fouling of extraction well is serious the most, cause pit shaft running environment to worsen, often there is the phenomenons such as bar lags behind, bar is disconnected, holddown, cause machine-pumped oil well inspection pump rate to raise, pump detection period shortens, and the shortest pump detection period, less than one month, has had a strong impact on the normal production of machine-pumped oil well.At present, extraction well antiscale measure has well head to add antiscale medicament, antiscale pump etc., but effect is unsatisfactory, holddown, disconnected bar etc. because of dirt inspection pumping frequency numerous; Clean ternary composite driving dirt and mainly take acid medicine as main, although can effectively dissolve dirty matter, but bar, pipe, pump and subsurface tool are had compared with severe corrosive, and cannot carry out scale removal to screw bolt well, the waste liquid of separating after dirt also needs the row of returning ground to process, the serious like this popularization that fetters ASP Oil-Displacing Technology.
Use ternary composite driving machine to adopt the scale removal problem that well need to solve extremely urgent, research ternary composite driving machine is adopted well descalling technique, ternary composite driving machine is adopted to well pump detection period and extend, guarantee that oil displacement efficiency is significant.
Summary of the invention
The technical problem to be solved in the present invention is to provide fast, the neutral free from corrosion oil field of a kind of de-plugging speed machine-pumped oil well neutral descaling and blockage relieving agent composition, for to rod-pumped well and screw bolt well de-plugging; The present invention also provides the preparation method of the neutral descaling and blockage relieving agent composition of oil field machine-pumped oil well, this unblocking agent can dissolve material dirt, pitch settling dirt, carbonate scale, silicate scale and the sulfate scale that ternary composite displacement system produces fast, cleans waste liquid and carries out sewage disposal without the row of returning ground.
In order to solve the problems of the technologies described above, the present invention take technical scheme as follows: the neutral descaling and blockage relieving agent composition of a kind of oil field machine-pumped oil well, it is characterized in that it is made by following component and parts by weight: 16～20 parts of poly-epoxy succinic acid amine, 7～12 parts, hydroxy ethylidene-diphosphate sodium, 21～25 parts of second diene pentaacetic acid amine, 20～25 parts of oxyacetic acid amine, 12～16 parts, active attapulgite soil, 21～25 parts of ammonium persulphates, 9～12 parts, sulfosuccinate dihexyl sodium, 7～9 parts of n-Butyl lactates, 0.2～0.3 part of Vanadium Pentoxide in FLAKES, 5～8 parts of linear alkyl benzene sulphonates, 10～14 parts of sodium nitrilo triacetates, 0.1～0.3 part of 4～7 parts of urotropines and glycerol fatty acid ester.
The preparation method who the component of above-mentioned parts by weight is made to the neutral descaling and blockage relieving agent composition of oil field machine-pumped oil well comprises the steps:
1, by 20～25 parts of 16～20 parts of poly-epoxy succinic acid amine, 7～12 parts, hydroxy ethylidene-diphosphate sodium, 21～25 parts of second diene pentaacetic acid amine, oxyacetic acid amine and 7～8 parts, active attapulgite soil, with shredder, carry out fragmentation, cross 20 mesh sieves, stir again 40 minutes to evenly, make the first powder; The first powder is the main component of unblocking agent;
2, by 7～9 parts of 21～25 parts of ammonium persulphates, 9～12 parts, sulfosuccinate dihexyl sodium, n-Butyl lactate and 4～6 parts, active attapulgite soil, with taper mixing and blending machine, stir 1 hour to even, make active attapulgite soil carrier fully adsorb other tensio-active agent, then cross 20 mesh sieves and make the second powder; The second powder is the solvay-type supporting surfactant of unblocking agent;
3, by 1～2 part, 0.2～0.3 part of Vanadium Pentoxide in FLAKES and active attapulgite soil, with taper mixing and blending machine, stir 1 hour, vanadium pentoxide catalyst is fully adsorbed by active attapulgite soil carrier, then cross 40 mesh sieves, make the 3rd powder; The 3rd powder is as the catalyzer of unblocking agent;
4, by 4～7 parts of 5～8 parts of linear alkyl benzene sulphonates, 10～14 parts of sodium nitrilo triacetates, urotropine and 0.1～0.3 part of glycerol fatty acid ester, with tapered mixing and blending machine, stir 40 minutes to even, then cross 20 mesh sieves and make the 4th powder, the 4th powder is as the composite powder with solubilising, inhibition, complexing action;
5, the first powder making, the second powder, the 3rd powder are mixed with the 4th powder, stir and make the neutral descaling and blockage relieving agent composition of oil field machine-pumped oil well.
The neutral descaling and blockage relieving agent composition of oil field of the present invention machine-pumped oil well, its outward appearance is colourless or light yellow powder shape, and particle size diameter is less than 20 orders, and water content is less than 6%, and bulk specific gravity is 1.03～1.12g/cm
3, pH is 6～7, corrosion rate is less than 0.1g/ (m
2h).During for oil field machine-pumped oil well de-plugging, the aqueous solution that is mixed with mass percent concentration 2～5% according to machine-pumped oil well dirt chocking-up degree water is used.The present invention has carried out application test in Daqing oil field oil recovery factory, by 10Mpa high-pressure pump, mass percent concentration 2～5% aqueous solution of the present invention is injected in the oil production division of machine-pumped oil well bottom, oil field, under the machine-pumped oil well temperature 45 C condition of oil field, there is chemical reaction with the calcium carbonate depositing in machine-pumped oil well, carbonic acid magne-scale and ternary composite driving polymer material dirt etc., within 24 hours, complete machine-pumped oil well and clean de-plugging, after de-plugging, oil extraction in oil field rate has reached the designed capacity of producing well.
Machine-pumped oil well neutral descaling and blockage relieving agent composition in oil field provided by the invention is applicable to rod-pumped well and screw bolt well descaling and blockage relieving, can effectively control the speed of response of unblocking agent and rod-pumped well and screw bolt well fouling and generate mashed prod, the bulk dirt slag secondary that prevents from dropping stops up machine-pumped oil well and oil extraction pump thereof.
Unblocking agent de-plugging speed provided by the invention is fast, neutrality is corrosion-free, can dissolve fast material dirt, pitch settling dirt, carbonate scale, silicate scale and sulfate scale that ternary composite displacement system produces, the waste liquid that cleans de-plugging has can self-degradation, without the row of returning ground, carries out sewage disposal.Clean oil well de-plugging by access inspection, corrosion-free in de-plugging process, without dead angle, do not produce the stifled well phenomenon of precipitation and secondary, the de-plugging treatment time is no more than 24 hours, reaches the corrosion-free de-plugging of safety, than traditional pickling de-plugging, biological plugging releasing and solvent de-plugging safety and reliability.
main Function and the application mechanism of each component of the present invention are as follows:
1, poly-epoxy succinic acid amine: the poly-epoxy succinic acid amine using in this unblocking agent, compound by five to six rings forms, after de-plugging, can not cause environmental accumulation, polluted-water, biological degradability is good, is that we are by the complexing of metal ion agent of a large amount of molten dirty test and Selection.Through de-plugging research evaluation result, prove: when poly-epoxy succinic acid amine and metal ion generate complex compound, conventionally form a plurality of complexing rings.The more, the stability of complex compound is higher for number in a complex molecules, and the more, the complex compound that ligand and complexing of metal ion form is just more stable for the complexing ring forming when ligand and complexing of metal ion.Poly-epoxy succinic acid amine has a plurality of complexing rings, and can be simultaneously with many metal ions as Ca
2+, Mg
2+, Fe
3+, Fe
2+, Ba
2+and Sr
2+plasma produces Complex effect, generate the stable complex compound with higher solubility, stop these particles to be combined with corresponding acid group, prevent precipitation, thereby effectively stoped kapillary and the trunnion of the secondary precipitate obstruction oil field stratum after the molten dirt of unblocking agent.Simultaneously; poly-epoxy succinic acid amine also has good corrosion inhibition; Sauerstoffatom in its molecular polarity group; there is not share electron pair; can become adsorption center adsorbing metal and metal and form five-membered cyclic compound; and be adsorbed on metallic surface, along metallic surface, form the protective membrane of one deck densification, thereby play the effect of inhibition protection oil production equipment.
2, hydroxy ethylidene-diphosphate sodium: be a kind of complexing agent, there is the molten dirt of good inhibition, can act on metallic surface with divalent-metal ion and form deposition protective membrane, corrosion inhibition rate reaches more than 95%, can react with the many kinds of metal ions in incrustation scale and generate six-ring complex compound, especially can form complex compound soluble in water with calcium, magnesium ion; It can be used in conjunction with this unblocking agent all components, has synergistic effect, can improve drug effect.
3, second diene pentaacetic acid amine: be a kind of important amino complexing agent, calcium, magnesium, iron incrustation ion are had to very strong complexing action, especially strong especially to the complex ability of high volence metal ion, thereby the use important role in this agent, molten dirt is effective, during with complexometry descaling and blockage relieving, effect is better than EDETATE SODIUM salt and EDTA ammonium salt, can be miscible with all components in this unblocking agent, can play synergy with other component with complexing action, improve de-plugging speed and effect.
4, oxyacetic acid amine: be that raw material is cleaned in a kind of important complexing, it can fully react with the rust deposite, calcium magnesium salts dirt etc. tied in equipment and reach the object of descaling and blockage relieving.Oxyacetic acid amine and calcium and magnesium ion generate complex compound soluble in water, also can with iron coordination, be easy to remove calcium carbonate and carbonic acid magne-scale and ferric oxide dirt, calcium magnesium salts and the complexing molysite of generation all have high-dissolvability, when cleaning and descaling de-plugging, can not there is the precipitation of organic molysite.
5, active attapulgite soil: attapulgite after overactivation and modification as carrier, to utilize organic coupling agent to process attapulgite, coupling agent is with chemical bonds, oxygenant and catalyzer are adsorbed on the many micropore surfaces of Attapulgite, in modes such as coverings, combine with active attapulgite soil surface, reach surface and the object of improving the physics and chemistry performance at interface, and the liquid components in native also adsorbable the unblocking agent of active attapulgite, to make this product of solid powdery.
6, ammonium persulphate: ammonium persulphate for clean-out system, etching and the petroleum drilling of metal, just can resolve into free radical during borehole operation in a large number at normal temperatures, has strong oxidizing property, has stronger cleansing power to calcium carbonate scale and carbonic acid magne-scale.The polymer material dirt producing for ternary flooding system, has good oxidative cleavage and solvency action.
7, sulfosuccinate dihexyl sodium: be a kind of agent for cleaning and scale-removing, there is the performances such as excellent wetting, infiltration, emulsification, dispersion, nontoxic, pungency is extremely low, belongs to mild anion surfactant.
8, n-Butyl lactate: be important aromatic series intermediate and Organic Chemicals, as medical, agriculture intermediate, and can be used as solvent, clean-out system, lubricant etc.It has good temperature expression range, can be compatible with water and organic system, and readily biodegradable, can replace most of Halogens and poisonous solvent.
9, linear alkyl benzene sulphonate: linear alkylbenzene sulphonic acid is synthetic linear alkylbenzene under special catalyst by straight-chain paraffin and benzene, through oversulfonate, neutralization reaction, make again, its performance is identical with linear alkylbenzene sulphonic acid, and its advantage is easy degraded.It is a kind of synthesizing cationic tensio-active agent of excellent property, and it is more soluble in water than soap, has the performance of good reduction surface tension and wetting, infiltration, emulsification.Its stable chemical nature can not decompose in acidity or alkaline medium and under heating condition.The various components of it and this agent all can produce synergy, and solubilizing effect is good, to improve the de-plugging ability of well on the beam.
10, sodium nitrilo triacetate: tensio-active agent sodium nitrilo triacetate has very strong complexing action to calcium, magnesium, iron ion, from the amount of unit mass complexation of metal ions, contrast, we find that sodium nitrilo triacetate complex ability is more eager to excel in whatever one does than EDTA, the complex compound quite stable forming, and price is cheap again, also degradable and environmental protection.
11, urotropine: have good corrosion inhibition, protection metal material is not corroded.
12, Vanadium Pentoxide in FLAKES: Vanadium Pentoxide in FLAKES in this agent as catalyzer, in oil field stratum and oil well pipe laying, the deposition of divalence sulfonate dirt reacts with the polycarboxylic acid amine salt in this unblocking agent, under the effect of the catalyzer of Vanadium Pentoxide in FLAKES, generate metal carboxylate micromolecular compound soluble in water.
13, glycerol fatty acid ester: be a kind of defoamer, there is the foaming that rapid elimination oil field stratum de-plugging process produces, its surface tension is lower, and easily absorption spreads on the liquid film of foam, after defoamer is sprawled and is adsorbed on bubble film, can make the local surface tension of liquid film reduce, take away contiguous liquid under liquid film simultaneously and cause thinning of liquid film and break.This defoamer on liquid film, sprawl very soon, book very, froth breaking rapidly, foam generated no longer in de-plugging process.
The present invention uses Green Chemistry Theory and technology, selects nontoxic development of raw materials green synthesis process, the production process of the friendly type of create environment, and this unblocking agent is at oil field stratum de-plugging application attestation, nontoxic to operator and oil field environment.The de-plugging mechanism of the neutral descaling and blockage relieving agent composition of oil field provided by the invention machine-pumped oil well is as follows:
1, the neutral unblocking agent mechanism of oilfield chemistry
Underground water, the local water of along with crude oil, exploiting use different sources mix with ground injected water, the cooling in local water extraction process, and the heating in oil water separation process, can produce incrustation scale.When oil field, in order to improve recovery ratio, to stratum, inject the alkali aqueous solution of ternary composite displacement system, make the pH of underground water be increased to 12～14, cause local water fouling.In oil field, modal fouling is calcium carbonate scale, carbonic acid magne-scale, Calucium Silicate powder dirt, calcium sulfate scale, strontium sulfate scale and barium sulfate scale etc., conventionally the high salt of content solubleness high, that easily separate out in some metallic corrosion products and some oil-field water is also included within dirt.Fouling mainly occurs in the surface of formation rock surface, oil pumper and spiral pump and equipment that current pass through, cause the obstruction of stratum, producing well, oil well pump, pipeline, the corrosion of pipeline and equipment, affects normal oil production, even causes the possible permanent damage of oil reservoir.
The present invention is that according to complex scheme, with expandable pores venturi, raising reservoir permeability is object from the consideration of pore texture angle.This neutral unblocking agent system be oxidized, chain rupture and complexing dissolve dirt, mashed prod is produced in reaction more gently, can avoid the particle that produces because of precipitation, the negative effect of bringing is relatively very little, for low permeability reservoir, de-plugging safety coefficient is high, success ratio is also high.If employing acidification to dispel block, once acidifying failure, those are insoluble to sour throw out and flow and stop up formation pore venturi with particulate form, and the difficulty that makes reservoir again increase production transformation increases greatly.Unblocking agent provided by the invention, it is object that the de-plugging of take dredging pore constriction recovers reservoir permeability, and the non-shale of the solubility in acids such as the carbonate in reservoir is dirty, silicates is dirty, metal oxide is dirty is stopped up to substance dissolves.Adopt the de-plugging of this agent, do not injure reservoir skeleton, it is also more easy to control that potential throw out dirt is dissolved in complexing, therefore to reservoir without injury, for oil field low permeability pay removing clog in deep reservoir, just should dredge pore constriction with de-plugging, recovery reservoir permeability is object.
The method of chemosmosis, solubilising, oxidation, chain rupture and conversion is used in neutral complexing de-plugging, make dirty type generation chemical reaction be converted into water-soluble salt, therefore under neutrallty condition, make the carbonate scale of calcium, magnesium, barium and strontium and sulfate scale dissolve in water, generate solubility calcium, magnesium, barium and strontium salt; Active group with neutral unblocking agent, sulfate scale can be converted into water miscible compound, for the divalence sulfonic acid salt crust depositing in oil reservoir, oil well pipe laying, react with the polycarboxylic acid amine salt in this agent, under the effect of vanadium pentoxide catalyst, generate the micromolecular Sulfonates water solubles.In its stratum medium pitch dirt and other polymer scale and this agent-OH(alcoholic extract hydroxyl group and phenolic hydroxyl group) ,-group generation synergistic effects such as ONa, reaction chain rupture generates small molecules polymkeric substance soluble in water, to reach the object of thorough removing superpolymer material dirt and pitch dirt.In oil field stratum, polymer material dirt is under the effect of this unblocking agent, by removing of random depolymerization, side group and low-molecular material etc., can cause the chain-breaking reaction that the molecular weight of polyacrylamide polymers material dirt reduces, and polymkeric substance is easily degraded.
2, the technical requirements of the neutral descaling and blockage relieving agent of oil field machine-pumped oil well
Machine-pumped oil well neutral descaling and blockage relieving agent in oil field is to be formed by multiple complexing agent, permeate agent, wetting agent and surfactant compound, we are when the formula of this unblocking agent of research, each selected component thing is the environmental protection material of neutrality or meta-alkalescence, and each component can not produce corrosion to metallic substance, and its compatibleness of various ingredients used, mutual solubility, preservative property, wettability and stability are all fine, in unblocking agent, do not contain H
+, Cl
-, S
2-, SO
4 2-in the easy ion that produces corrosive medium.Material used is all nontoxic, tasteless, corrosion-free or meta-alkalescence material, and is easy to degrade in stratum, free from environmental pollution.This agent has good oxidation, chain rupture, coordination, complexing, infiltration and solvency action to carbonate, silicate, phosphoric acid salt, phosphatic calcium, magnesium ion, chemical cleaning speed is fast, silicate scale and sulfate scale are also had to good effect, in oil field complexing de-plugging process, owing to not containing H in this agent
+and Cl
-producing well equipment and oil recovery bar and well are not produced to the precipitation in burn into dead angle or stratum, and the stifled well of the secondary that can not produce cleaning materials precipitation, can be under normal temperature to 100 ℃ condition, processing the de-plugging time is about 24 hours, the more important thing is and really reach corrosion-free safe chemistry de-plugging, than traditional pickling de-plugging, biological plugging releasing and solvent de-plugging safety and reliability.The etching problem that inhibiter lost efficacy and causes when stifled with acidolysis has thoroughly been eliminated in this agent, and while also having evaded solvent de-plugging, inflammable, explosive, poisonous and biotechnology is difficult to the risk of controlling, for guaranteeing safety in production, long period oil recovery important in inhibiting.
3, the safe reliability of neutral unblocking agent
This product is not containing mineral acid, organic acid, highly basic and cleaning inhibiter, pH is 6～7, by multiple pharmacy intermediate, neutral complexing agent, oxygenant, tensio-active agent and defoamer are composite to be formed, fast to oil field stratum de-plugging speed, to bituminous matter dirt, sulfosalt surfactant dirt, polyacrylamide material dirt, various calcium magnesium salts dirts have very strong solvency action, in cleaning de-plugging process, really reach corrosion-free matting de-plugging, than traditional chemical cleaning mineral acid, organic acid, highly basic safety and reliability, while thoroughly having eliminated because of use pickling stratum, inhibiter lost efficacy, the corrosion of burst factor to oil production equipment such as inhibiter emulsification inequality or misoperation.
Details are as follows for the advantage of the neutral descaling and blockage relieving agent composition of oil field provided by the invention machine-pumped oil well:
1, single stage method completes oil field machine-pumped oil well descaling and blockage relieving agent
Oilfield pumping well and screw bolt well descaling and blockage relieving agent form by gathering epoxy amber glass acid amide, hydroxy ethylidene-diphosphate sodium, second diene pentaacetic acid amine, oxyacetic acid amine, ammonium persulphate, sulfosuccinate diethyl ester sodium, whey butyl ester, sodium nitrilo triacetate, urotropine and kinds of surface promoting agent, the pH of unblocking agent is 6～7,, containing harmful ions such as mineral acid, organic acid, chlorion and sulfate radicals, corrosion rate is not less than 0.1g/ (m
2h), reach corrosion-free safe de-plugging.In the machine-pumped oil well descaling and blockage relieving process of oil field, use this neutral unblocking agent, can under normal temperature to 100 ℃ condition, by single stage method, complete carbonate scale, silicate scale, the de-plugging of sulfate scale chemical cleaning, without neutralizing treatment and Passivation Treatment, improve de-plugging efficiency.
2, remove polymer material dirt and the bituminous matter dirt that oilfield pumping well and screw bolt well produce
The compound dirt that this agent generates the precipitations such as divalent alkyl Phenylsulfonic acid calcium (magnesium) precipitation dirt, polyacrylamide polymers material dirt and ferric oxide dirt that produced by sodium alkylphenylsulfonateas as surfactant in ternary compound oil drive system oil recovery process, in 24 hours, under free from corrosion cleaning working condition, complete the chemically neutral descaling and blockage relieving of oil well and oil extraction pump.This agent can be dissolved the tamper of oil well and oil extraction pump studies on asphaltene dirt fast, the permeate agent that makes to add enters the inside of organic polymer rapidly, unblocking agent is contacted rapidly with organic polymer material dirt, make bituminous matter dirt and polymer material dirt expand, are oxidized, transform, finally form soluble in the small molecules solution of water.
3, do not come off dirty slag and do not produce throw out of neutral de-plugging
This neutral unblocking agent, carbonate scale, silicate scale, sulfate scale and tensio-active agent dirt and the polymer material dirt etc. of block-relief oil production pit shaft capable of washing and oil extraction pump surface knot.This unblocking agent has good complexing, dispersiveness, perviousness and solvability, and reactant becomes pasty state, does not produce dirty slag and secondary precipitate, can effectively solve easily come off large slag holddown and block the problem of producing well of traditional pickling, guarantees safe de-plugging.
4, the waste liquid of neutral unblocking agent de-plugging is without the row's of returning floor treatment
Because this unblocking agent is comprised of raw materials such as the complexing agent of easily degrading, emulsifying agent, dispersion agent, oxygenants, with the dirt generation chemical reaction cleaning in oil well and oil extraction pump, generate the easily small molecules salt of degraded.After using this agent to oil well and oil extraction pump chemical plugging removal, oil well and oil extraction pump clean the waste liquid of de-plugging without the row of returning processing earthward, have reduced liquid waste disposal operation and expense after cleaning de-plugging.
Embodiment
embodiment 1, by following component and weight, take raw material: poly-epoxy succinic acid amine 16kg, hydroxy ethylidene-diphosphate sodium 8kg, second diene pentaacetic acid amine 24kg, oxyacetic acid amine 25kg, active attapulgite soil 16kg, ammonium persulphate 21kg, sulfosuccinate dihexyl sodium 11kg, n-Butyl lactate 7kg, Vanadium Pentoxide in FLAKES 0.3kg, linear alkyl benzene sulphonate 6kg, sodium nitrilo triacetate 12kg, urotropine 6kg and glycerol fatty acid ester 0.2kg; In the steps below above-mentioned raw materials is prepared into the neutral descaling and blockage relieving agent of oil field machine-pumped oil well:
1, by the above-mentioned poly-soil of the active attapulgite by epoxy succinic acid amide, hydroxy ethylidene-diphosphate sodium, second diene pentaacetic acid amine, oxyacetic acid amine and 8kg, with shredder, carry out fragmentation, cross 20 mesh sieves, then stir 40 minutes to evenly, make the first powder; The first powder is the main component of unblocking agent;
2, by above-mentioned ammonium persulphate, sulfosuccinate dihexyl sodium, n-Butyl lactate and 6kg active attapulgite soil, with taper mixing and blending machine, stir 1 hour to even, make active attapulgite soil carrier fully adsorb other tensio-active agent, then cross 20 mesh sieves and make the second powder; The second powder is the solvay-type supporting surfactant of unblocking agent;
3, by above-mentioned Vanadium Pentoxide in FLAKES and 2kg active attapulgite soil, with taper mixing and blending machine, stir 1 hour, vanadium pentoxide catalyst is fully adsorbed by active attapulgite soil carrier, then cross 40 mesh sieves, make the 3rd powder; The 3rd powder is as the catalyzer of unblocking agent;
4, by above-mentioned linear alkyl benzene sulphonate, sodium nitrilo triacetate, urotropine and glycerol fatty acid ester part, with tapered mixing and blending machine, stir 40 minutes to evenly, then cross 20 mesh sieves and make the 4th powder; The 4th powder has solubilising as making, the composite powder of inhibition, complexing action;
5, the first powder making, the second powder, the 3rd powder are mixed with the 4th powder, stir and make the neutral descaling and blockage relieving agent composition of oil field machine-pumped oil well.
embodiment 2, by following component and weight, take raw material: poly-epoxy succinic acid amine 18kg, hydroxy ethylidene-diphosphate sodium 12kg, second diene pentaacetic acid amine 21kg, oxyacetic acid amine 23kg, active attapulgite soil 15kg, ammonium persulphate 25kg, sulfosuccinate dihexyl sodium 9kg, n-Butyl lactate 9kg, Vanadium Pentoxide in FLAKES 0.25kg, linear alkyl benzene sulphonate 7kg, sodium nitrilo triacetate 10kg, urotropine 5kg and glycerol fatty acid ester 0.15kg; In the steps below above-mentioned raw materials is prepared into the neutral descaling and blockage relieving agent of oil field machine-pumped oil well:
1, by the above-mentioned poly-soil of the active attapulgite by epoxy succinic acid amide, hydroxy ethylidene-diphosphate sodium, second diene pentaacetic acid amine, oxyacetic acid amine and 7kg, with shredder, carry out fragmentation, remaining same embodiment 1;
2, with embodiment 1;
3, with embodiment 1;
4, with embodiment 1;
5, with embodiment 1.
embodiment 3, by following component and weight, take raw material: poly-epoxy succinic acid amine 20kg, hydroxy ethylidene-diphosphate sodium 10kg, second diene pentaacetic acid amine 22kg, oxyacetic acid amine 20kg, active attapulgite soil 16kg, ammonium persulphate 22kg, sulfosuccinate dihexyl sodium 12kg, n-Butyl lactate 8kg, Vanadium Pentoxide in FLAKES 0.2kg, linear alkyl benzene sulphonate 5kg, sodium nitrilo triacetate 14kg, urotropine 4kg and glycerol fatty acid ester 0.1kg; The step that above-mentioned raw materials is prepared into the neutral descaling and blockage relieving agent of oil field machine-pumped oil well is with embodiment 1.
embodiment 4, by following component and weight, take raw material: poly-epoxy succinic acid amine 19kg, hydroxy ethylidene-diphosphate sodium 7kg, second diene pentaacetic acid amine 25kg, oxyacetic acid amine 23kg, active attapulgite soil 12kg, ammonium persulphate 22kg, sulfosuccinate dihexyl sodium 10kg, n-Butyl lactate 8kg, Vanadium Pentoxide in FLAKES 0.25kg, linear alkyl benzene sulphonate 8kg, sodium nitrilo triacetate 13kg, urotropine 7kg and glycerol fatty acid ester 0.25kg; The step that above-mentioned raw materials is prepared into the neutral descaling and blockage relieving agent of oil field machine-pumped oil well is as follows:
1, by the above-mentioned poly-soil of the active attapulgite by epoxy succinic acid amide, hydroxy ethylidene-diphosphate sodium, second diene pentaacetic acid amine, oxyacetic acid amine and 7kg, with shredder, carry out fragmentation, remaining same embodiment 1;
2,, by above-mentioned ammonium persulphate, sulfosuccinate dihexyl sodium, n-Butyl lactate and 4kg active attapulgite soil, with taper mixing and blending machine, stir 1 hour to even, remaining same embodiment 1;
3, by above-mentioned Vanadium Pentoxide in FLAKES and 1kg active attapulgite soil, with taper mixing and blending machine, stir 1 hour remaining same embodiment 1;
4, with embodiment 1;
5, with embodiment 1.
embodiment 5, by following component and weight, take raw material: poly-epoxy succinic acid amine 20kg, hydroxy ethylidene-diphosphate sodium 11kg, second diene pentaacetic acid amine 25kg, oxyacetic acid amine 23g, active attapulgite soil 15g, ammonium persulphate 22kg, sulfosuccinate dihexyl sodium 11kg, n-Butyl lactate 9kg, Vanadium Pentoxide in FLAKES 0.3kg, linear alkyl benzene sulphonate 8kg, sodium nitrilo triacetate 11kg, urotropine 6kg and glycerol fatty acid ester 0.35kg; The step that above-mentioned raw materials is prepared into the neutral descaling and blockage relieving agent of oil field machine-pumped oil well is as follows:
1, by the above-mentioned poly-soil of the active attapulgite by epoxy succinic acid amide, hydroxy ethylidene-diphosphate sodium, second diene pentaacetic acid amine, oxyacetic acid amine and 7.5kg, with shredder, carry out fragmentation, remaining same embodiment 1;
2,, by above-mentioned ammonium persulphate, sulfosuccinate dihexyl sodium, n-Butyl lactate and 6kg active attapulgite soil, with taper mixing and blending machine, stir 1 hour to even, remaining same embodiment 1;
3, by above-mentioned Vanadium Pentoxide in FLAKES and 1.5kg active attapulgite soil, with taper mixing and blending machine, stir 1 hour remaining same embodiment 1;
4, with embodiment 1;
5, with embodiment 1.
Claims (2)
1. the neutral descaling and blockage relieving agent composition of oil field machine-pumped oil well, it is characterized in that it is made by following component and parts by weight: 16～20 parts of poly-epoxy succinic acid amine, 7～12 parts, hydroxy ethylidene-diphosphate sodium, 21～25 parts of second diene pentaacetic acid amine, 20～25 parts of oxyacetic acid amine, 12～16 parts, active attapulgite soil, 21～25 parts of ammonium persulphates, 9～12 parts, sulfosuccinate dihexyl sodium, 7～9 parts of n-Butyl lactates, 0.2～0.3 part of Vanadium Pentoxide in FLAKES, 5～8 parts of linear alkyl benzene sulphonates, 10～14 parts of sodium nitrilo triacetates, 0.1～0.3 part of 4～7 parts of urotropines and glycerol fatty acid ester.
2. prepare the neutral descaling and blockage relieving agent composition of oil field claimed in claim 1 machine-pumped oil well, it is characterized in that comprising the steps:
A, by 20～25 parts of 16～20 parts of poly-epoxy succinic acid amine, 7～12 parts, hydroxy ethylidene-diphosphate sodium, 21～25 parts of second diene pentaacetic acid amine, oxyacetic acid amine and 7～8 parts, active attapulgite soil, with shredder, carry out fragmentation, cross 20 mesh sieves, stir again 40 minutes to evenly, make the first powder;
B, by 7～9 parts of 21～25 parts of ammonium persulphates, 9～12 parts, sulfosuccinate dihexyl sodium, n-Butyl lactate and 4～6 parts, active attapulgite soil, with taper mixing and blending machine, stir 1 hour to even, make active attapulgite soil carrier fully adsorb other tensio-active agent, then cross 20 mesh sieves and make the second powder;
C, by 1～2 part, 0.2～0.3 part of Vanadium Pentoxide in FLAKES and active attapulgite soil, with taper mixing and blending machine, stir 1 hour, vanadium pentoxide catalyst is fully adsorbed by active attapulgite soil carrier, then cross 40 mesh sieves, make the 3rd powder;
D, by 4～7 parts of 5～8 parts of linear alkyl benzene sulphonates, 10～14 parts of sodium nitrilo triacetates, urotropine and 0.1～0.3 part of glycerol fatty acid ester, with tapered mixing and blending machine, stir 40 minutes to evenly, then 20 mesh sieves make the 4th powder;
E, the first powder making, the second powder, the 3rd powder are mixed with the 4th powder, stir and make the neutral descaling and blockage relieving agent composition of oil field machine-pumped oil well.
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