CN103804589A - Synthesis process of binary copolymerized anti-scaling agent based on controlling distillation time - Google Patents
Synthesis process of binary copolymerized anti-scaling agent based on controlling distillation time Download PDFInfo
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- CN103804589A CN103804589A CN201210481013.6A CN201210481013A CN103804589A CN 103804589 A CN103804589 A CN 103804589A CN 201210481013 A CN201210481013 A CN 201210481013A CN 103804589 A CN103804589 A CN 103804589A
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Abstract
The invention discloses a synthesis process of a binary copolymerized anti-scaling agent based on controlling distillation time. The synthesis process comprises the following steps: (a) firstly, preparing a chelating group monomer and acrylamide on a certain proportion; (b) adding the chelating group monomer and the acrylamide to a reaction container, adding a solvent and dissolving, and adding a catalyst; (c) stirring so that materials are completely and uniformly mixed; (d) placing the reaction container in water bath, stirring at certain temperature and reacting to obtain a reaction product mixture; (e) cooling and filtering the reaction product mixture, distilling filtered liquid for 1-3 hours under certain pressure and separating to obtain a target product. The synthesis process disclosed by the invention can be used for realizing successful synthesis of the binary copolymerized anti-scaling agent, and the synthesized binary copolymerized anti-scaling agent is excellent in performance, simple in synthesis step and low in synthesis cost; the synthesis process, through controlling distillation time in reaction process, can improve reaction conversion rate and anti-scaling performance of the target product.
Description
Technical field
The present invention relates to a kind of synthesis technique of the binary copolymerization scale inhibitor based on control distillation time.
Background technology
In oilfield exploitation procedure, fluid (oil, G&W) in hydrocarbon-bearing pool flows out from stratum, through pit shaft, well head to surface gathering system, due to the variation of the condition such as temperature, pressure and the thermodynamic phase of water and chemical incompatibility, cause oil gas water balance state to be destroyed.Often cause water filling stratum, tubing and casing, down-hole, uphole equipment and gathering system to occur fouling.Fouling has larger impact to the normal production of oil well, in the time that dirt deposition is on the equipment such as pit shaft, oil pipe, oil well pump, waterflood system, gathering system, heating system, can cause equipment not run well, heat transfer efficiency reduces, cause throughput to decline, and fouling also can cause the corrosion of equipment and pipeline, cause serious financial loss to oil field.
Existing scale inhibitor mainly contains aminopolycanboxylic acid's salt, organic multicomponent phosphonic acid based and organic polymer three major types.Aminopolycanboxylic acid's salt Chelate stability constants is large, can be used for comparatively high temps, but consumption is large, and cost is high; Organic multicomponent phosphonic acids to barium sulfate, Strontium Sulphate without antiscaling effect; And what mostly use is organic polymer scale inhibitor, uses monomer and maleic anhydride, acrylic acid copolymer to expect raising antiscaling rate more, but owing to fundamentally not changing polymer architecture, do not reach the antiscaling effect of expection.
In crude oil production process, fouling is a kind of ubiquitous phenomenon, and fouling is simultaneously one of the most serious problem running in the control of oil-field water water quality.Fouling has larger impact to the normal production of oil well, and dirt deposition can stop up formation pore, crack on stratum, cause permeability reduction, and crude production rate is declined, and even causes oil well to stop production when serious, and the oil reservoir lower on rate of permeation affects more very; In the time that dirt deposition is on the equipment such as pit shaft, oil pipe, oil well pump, waterflood system, gathering system, heating system, can cause equipment not run well, heat transfer efficiency reduces, cause throughput to decline, and fouling also can cause the corrosion of equipment and pipeline, cause serious financial loss to oil field.
The modal dirty type in oil field has calcite calcium carbonate (CaCO3), gypsum terra alba, anhydrite calcium sulfate (CaSO4), rock salt (NaCl), barite sulfate barium (BaSO4) and lazurite Strontium Sulphate (SrSO4).And the Strontium Sulphate of trace is often present in a large amount of barium sulfate, be difficult to them to separate.
The major cause of fouling is due to pressure or temperature change, evaporation or two kinds of water of 5 of mismatching mix mutually, make the inorganic salt (CaCO3, CaSO4 or BaSO4) that are originally present in the aqueous solution with ionic condition reach hypersaturated state, exceeded their solubleness and crystallize out into dirt.Fouling process is the process of certain density incrustation ion crystallization and gathering under certain physical and chemical condition (as pressure, temperature) and equipment surface situation.It is the basic reason that causes fouling that equilibrium state goes to pot.
For the various fouling situations in oil field, there are two class solutions: the one, scale removal; The 2nd, antiscale.Scale removal is a kind of remedial measures, and when scale removal, the corrosion that it has produced the underproduction and equipment, has caused larger financial loss, therefore, prevents that dirty generation is only a kind of good measure.In the method for antiscale, with chemical agent antiscale be people generally acknowledge the simplest, effectively, convenient, economic method.Therefore each oil field all adapts to the chemical scale inhibition agent of different condition for block the characteristic study separately.And develop the efficient scale inhibitor common objective that just generally pursue in each oil field especially.
In the process of synthetic binary copolymerization scale inhibitor, distillation time, by the performance of the target product that directly has influence on the transformation efficiency of reaction and synthesize, therefore determine a suitable distillation time, seems particularly important to the synthesis technique of binary copolymerization scale inhibitor.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, a kind of synthesis technique of the binary copolymerization scale inhibitor based on control distillation time is provided, this synthesis technique can successfully synthesize binary copolymerization scale inhibitor, and the excellent property of the binary copolymerization scale inhibitor synthesizing, synthesis step is simple, synthetic cost is low, and by controlling the distillation time in reaction process, thereby improve the transformation efficiency of reaction and the anti-scaling property of target product.
Object of the present invention is achieved through the following technical solutions: a kind of synthesis technique of the binary copolymerization scale inhibitor based on control distillation time, comprises the following steps:
(a) first, prepare according to a certain percentage chelating group monomer and acrylamide;
(b) chelating group monomer and acrylamide are joined in reaction vessel, then add after dissolution with solvents, add catalyzer;
(c) stir and allow it fully mix;
(d) be placed in water-bath, stir at a certain temperature, reaction obtains mixture of reaction products;
(e) mixture of reaction products is cooling, and make filtration treatment, liquid after filtration is distilled to 1～3h under certain pressure, after separation, obtain target product.
Described reaction vessel is beaker.
In described step (e), carry out filtration treatment by molecular sieve.
In described step (e), carry out underpressure distillation by rotatory evaporator.
In described step (e), distillation time is 1.5h.
In described step (e), distillation time is 2.0h.
In described step (e), distillation time is 2.5h.
In sum, the invention has the beneficial effects as follows: can successfully synthesize binary copolymerization scale inhibitor, and the excellent property of the binary copolymerization scale inhibitor synthesizing, synthesis step is simple, synthetic cost is low, and by controlling the distillation time in reaction process, thereby the transformation efficiency of reaction and the anti-scaling property of target product are improved.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment:
The synthesis technique of a kind of binary copolymerization scale inhibitor based on control distillation time the present invention relates to, comprises the following steps:
(a) first, prepare according to a certain percentage chelating group monomer and acrylamide;
(b) chelating group monomer and acrylamide are joined in reaction vessel, then add after dissolution with solvents, add catalyzer;
(c) stir and allow it fully mix;
(d) be placed in water-bath, stir at a certain temperature, reaction obtains mixture of reaction products;
(e) mixture of reaction products is cooling, and make filtration treatment, liquid after filtration is distilled to 1～3h under certain pressure, after separation, obtain target product.
Described reaction vessel is beaker.
In described step (e), carry out filtration treatment by molecular sieve.
In described step (e), carry out underpressure distillation by rotatory evaporator.
In described step (e), distillation time is 1.5h.
In described step (e), distillation time is 2.0h.
In described step (e), distillation time is 2.5h.
In the process of synthetic binary copolymerization scale inhibitor, distillation time, by the performance of the target product that directly has influence on reaction conversion ratio and synthesize, therefore determine a suitable distillation time, seems particularly important to the synthesis technique of binary copolymerization scale inhibitor.In order to obtain best distillation time, the present invention has done the impact experiment of the anti-scaling property of different distillation times on reaction conversion ratio and target product, result is known by experiment: suitably increase distillation time, can increase the transformation efficiency of whole synthesis technique, still, in the time that distillation time reaches certain value, increase again distillation time and do not have large impact for the transformation efficiency that synthesis technique is provided, on the contrary, can reduce the anti-scaling property of target product, therefore should consider.
To sum up, the distillation time in the present invention is defined as 1～3h, and the best is 2h.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction, every foundation technical spirit of the present invention, and any simple modification, equivalent variations that above embodiment is done, within all falling into protection scope of the present invention.
Claims (7)
1. the synthesis technique of the binary copolymerization scale inhibitor based on control distillation time, is characterized in that, comprises the following steps:
(a) first, prepare according to a certain percentage chelating group monomer and acrylamide;
(b) chelating group monomer and acrylamide are joined in reaction vessel, then add after dissolution with solvents, add catalyzer;
(c) stir and allow it fully mix;
(d) be placed in water-bath, stir at a certain temperature, reaction obtains mixture of reaction products;
(e) mixture of reaction products is cooling, and make filtration treatment, liquid after filtration is distilled to 1～3h under certain pressure, after separation, obtain target product.
2. the synthesis technique of the binary copolymerization scale inhibitor based on control distillation time according to claim 1, is characterized in that, described reaction vessel is beaker.
3. the synthesis technique of the binary copolymerization scale inhibitor based on control distillation time according to claim 1, is characterized in that, in described step (e), carries out filtration treatment by molecular sieve.
4. the synthesis technique of the binary copolymerization scale inhibitor based on control distillation time according to claim 1, is characterized in that, in described step (e), carries out underpressure distillation by rotatory evaporator.
5. the synthesis technique of the binary copolymerization scale inhibitor based on control distillation time according to claim 1, is characterized in that, in described step (e), distillation time is 1.5h.
6. the synthesis technique of the binary copolymerization scale inhibitor based on control distillation time according to claim 1, is characterized in that, in described step (e), distillation time is 2.0h.
7. the synthesis technique of the binary copolymerization scale inhibitor based on control distillation time according to claim 1, is characterized in that, in described step (e), distillation time is 2.5h.
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| CN201210481013.6A CN103804589A (en) | 2012-11-13 | 2012-11-13 | Synthesis process of binary copolymerized anti-scaling agent based on controlling distillation time |
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| CN201210481013.6A CN103804589A (en) | 2012-11-13 | 2012-11-13 | Synthesis process of binary copolymerized anti-scaling agent based on controlling distillation time |
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Application publication date: 20140521 |