CN103808580A - Method for testing influence on descaling effect of descaling agent caused by dosage of hydrochloric acid - Google Patents
Method for testing influence on descaling effect of descaling agent caused by dosage of hydrochloric acid Download PDFInfo
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- CN103808580A CN103808580A CN201210480914.3A CN201210480914A CN103808580A CN 103808580 A CN103808580 A CN 103808580A CN 201210480914 A CN201210480914 A CN 201210480914A CN 103808580 A CN103808580 A CN 103808580A
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Abstract
The invention discloses a method for testing influence on the descaling effect of a descaling agent caused by the dosage of hydrochloric acid. The method comprises the steps: (a) firstly, adding a scale sample into each experimental container; (b) then, adding the descaling agent into each experimental container; (c) respectively adding 5ml, 10ml, 15ml, 20ml, 30ml and 40ml of hydrochloric acid into the experimental containers; (d) then, placing the experimental containers into constant-temperature water baths, and carrying out descaling reaction; (e) after the reaction is ended, carrying out suction filtration on a scale sample mixture, baking, and weighing; (f) analyzing through experimental data, thereby obtaining the descaling effect of the mixed descaling agent. The method has the advantages that the influence on the descaling effect of the descaling agent caused by the dosage of hydrochloric acid can be tested quickly, the test steps are simple, the test time is short, the test results are accurate, the test cost is reduced greatly, and a theoretical support is provided for the application of the descaling agent.
Description
Technical field
The present invention relates to the method for testing of a kind of hydrochloric acid dosage on the impact of scale remover descale effect.
Background technology
Scale inhibitor is a kind of incrustation scale of removing, and the chemicals of the multiple dirt stain such as dirt, generally forms by various ingredients is composite.Industrial scale inhibitor is mainly used in removing heat transmission equipment, the dirt in boiler etc.
Oil field enters after Water-cut Period exploitation, generally adopts the new technologies such as water flood recovery, water pumping gas production, draining gas finding; For eliminating environmental pollution, gas-field water is mainly taked again to re-injection processing simultaneously.In above-mentioned production run, due to the variation of the condition such as pressure, temperature and the thermodynamic phase of water and chemical incompatibility, often cause water filling stratum, well wellbore, tubing and casing, down-hole, uphole equipment and gathering line to occur fouling, bring great harm to production.Due to the impact that waits of fouling, cause oilwell produced fluid amount to decline, water injection pressure rises, and pipeline and heating furnace stop up, and fouling simultaneously has also increased the borehole operation of oil well, and severe patient causes Oil/gas Well stop production or scrap, thereby causes economic loss.It is reported, the economic loss that the annual Oil/gas Well of the U.S. and uphole equipment cause because of fouling just reaches 1,000,000,000 dollars.Fouling is one of problem the most serious in the water quality control of oil field, and the local corrosion that it can cause e-quipment and pipe, causes perforation in a short time.It is long-pending that incrustation scale also can reduce water flow section, causes resistance to water-flow large, and water injection pressure increases, and conveying capacity and cleaning charge are increased, stop production to overhaul time lengthening, and oil and gas production declines, and down-hole and uphole equipment even make Oil/gas Well stop production.
As in the exploitation in Nan Mazhuan oil field, North China, ground production system fouling is very serious, fouling situation complexity, and existing barium sulphate and barium sulfate scale, have again calcium carbonate and carbonic acid magne-scale.Fouling makes that pipeline section is long-pending to diminish, and device processes ability reduces, and increases energy consumption, and the production management in oil field, these problems Dou Geinanma village and production cost have caused very large impact.
In oil-field development, inorganic scaling makes that formation channels and pipeline section are long-pending to diminish, and device processes ability reduces, and increases energy consumption, even occur to make pipeline burst phenomenon because fouling causes pipeline pressure increase, these bring huge harm all to the normal production in oil field.
Water is the natural accompaniment of oil.The most of oil field of China has adopted waterflooding mode at present, and 1 ton of crude oil of every production approximately needs 2～3 tons of water of note, thereby the relation of water and Petroleum Production is very big.Along with two problems of having brought of oil-field flooding.The one, the water resources problem of injected water, people wish to obtain the water source that can provide output large and stable; The 2nd, water content in crude oil constantly rises, and oily sewage amount is increasing, and the discharge of sewage and processing are large problems.In production practices, people recognize that rejection of oil flied effluent is reasonable development and the right way that utilizes water resource.
But oilfield sewage water quality complexity, contains many objectionable constituent.Therefore should there are certain requirements the water quality of oilfield injection water, otherwise can bring a series of new problems.In sewage, a large amount of scaling salt classes are along with temperature and pressure changes, and because of from the mixing of different water, will there is fouling, latch up phenomenon.For example, certain oil field brings in only 10 days flatly, and 21/2 inch of oil collecting pipe, just because incrustation is blocked, is successively changed pipeline 6 times, is finally forced to closing well.
At present annual water filling approximately 6.2 hundred million m3; annual output water approximately 300,000,000 m3; these water are with crude oil output; after the dehydration of crude oil, in water, usually band is oily, and the water of stratum extraction, from the angle of protection of the environment; can not at will discharge; and require 100% processing re-injection, and do like this and can utilize on the one hand sewage resource to reduce the amount of injecting fresh water, can reduce on the other hand the pollution to water-use for environment.
Unreasonable re-injection and the discharge of oilfield sewage, not only make uphole equipment cisco unity malfunction, and can bring harm because of reservoir choke, also can cause environmental pollution simultaneously.Therefore, the harm causing for oil field aqueous corrosion, fouling and bacterium, takes strong inhibition, antiscaling, descaling and sterilization measure, and improving constantly and improve produced water treatment has become imperative important topic.Wherein the same sand of scale problems, wax, water are the same with thick problem, become very important research topic in oil production technology and oil gas water technology.
The organic dispersing agent that adds active substance or have a dispersed effect in scale remover is conducive to make dirt to become loose, makes that complexing agent is more effective to be contacted and reach complexation equilibrium with inorganic salts.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, the method of testing of a kind of hydrochloric acid dosage on the impact of scale remover descale effect is provided, this method of testing can test out the impact of hydrochloric acid dosage on scale remover descale effect fast, and testing procedure is simple, test duration is short, test result is accurate, greatly reduces testing cost, for the application of scale remover provides theoretical support.
Object of the present invention is achieved through the following technical solutions: the method for testing of a kind of hydrochloric acid dosage on the impact of scale remover descale effect, comprising:
(a) in experiment container, add dirty sample first, respectively;
(b) then, in experiment container, add scale remover respectively;
(c) to the hydrochloric acid that adds 5ml, 10ml, 15ml, 20ml, 30ml, 40ml in experiment container;
(d) then, experiment container is placed in to water bath with thermostatic control, carries out scale removal reaction;
(e) after reaction finishes, dirty sample potpourri is carried out to suction filtration, dry, claim its weight;
(f) data by experiment, analyze and draw the descale effect that mixes scale remover.
Described experiment container is conical flask.
Described dirty sample is barium sulfate scale sample.
In described step (d), the temperature of water bath with thermostatic control is 50 ℃, and the time is 12h.
In sum, the invention has the beneficial effects as follows: can test out fast the impact of hydrochloric acid dosage on scale remover descale effect, and testing procedure is simple, test duration is short, test result is accurate, greatly reduces testing cost, for the application of scale remover provides theoretical support.
Accompanying drawing explanation
Fig. 1 is the affect schematic diagram of hydrochloric acid dosage on scale remover descale effect.
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 method of testing of a kind of hydrochloric acid dosage the present invention relates on the impact of scale remover descale effect, comprising:
(a) in experiment container, add dirty sample first, respectively;
(b) then, in experiment container, add scale remover respectively;
(c) to the hydrochloric acid that adds 5ml, 10ml, 15ml, 20ml, 30ml, 40ml in experiment container;
(d) then, experiment container is placed in to water bath with thermostatic control, carries out scale removal reaction;
(e) after reaction finishes, dirty sample potpourri is carried out to suction filtration, dry, claim its weight;
(f) data by experiment, analyze and draw the descale effect that mixes scale remover.
Described experiment container is conical flask.
Described dirty sample is barium sulfate scale sample.
In described step (d), the temperature of water bath with thermostatic control is 50 ℃, and the time is 12h.
The result being recorded by said method is as shown in following table and Fig. 1:
From upper table and Fig. 1, along with the increase of hydrochloric acid addition, scale removal efficiency rises gradually, in the time that hydrochloric acid content reaches 20ml, can reach 41.23% to the descaling rate of strontium sulfate scale.Along with the increase of hydrochloric acid dosage, descaling rate amplitude of variation is very little afterwards, but because hydrochloric acid content increases, can make this scale remover increase the corrosivity of equipment and pipeline, in the serviceable life that can reduce equipment, has shortened pump detection period.So the consideration of synthesise various factor, for this acid scale remover, hydrochloric acid dosage is selected 20ml.
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 (4)
1. the method for testing of hydrochloric acid dosage on the impact of scale remover descale effect, is characterized in that, comprising:
(a) in experiment container, add dirty sample first, respectively;
(b) then, in experiment container, add scale remover respectively;
(c) to the hydrochloric acid that adds 5ml, 10ml, 15ml, 20ml, 30ml, 40ml in experiment container;
(d) then, experiment container is placed in to water bath with thermostatic control, carries out scale removal reaction;
(e) after reaction finishes, dirty sample potpourri is carried out to suction filtration, dry, claim its weight;
(f) data by experiment, analyze and draw the descale effect that mixes scale remover.
2. the method for testing of hydrochloric acid dosage according to claim 1 on the impact of scale remover descale effect, is characterized in that, described experiment container is conical flask.
3. the method for testing of hydrochloric acid dosage according to claim 1 on the impact of scale remover descale effect, is characterized in that, described dirty sample is barium sulfate scale sample.
4. the method for testing of hydrochloric acid dosage according to claim 1 on the impact of scale remover descale effect, is characterized in that, in described step (d), the temperature of water bath with thermostatic control is 50 ℃, and the time is 12h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210480914.3A CN103808580A (en) | 2012-11-13 | 2012-11-13 | Method for testing influence on descaling effect of descaling agent caused by dosage of hydrochloric acid |
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| CN201210480914.3A CN103808580A (en) | 2012-11-13 | 2012-11-13 | Method for testing influence on descaling effect of descaling agent caused by dosage of hydrochloric acid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713798A (en) * | 2015-04-03 | 2015-06-17 | 西南石油大学 | Novel method for determining scale-dissolving rate of chelating scale-dissolving agent |
| CN108955791A (en) * | 2018-09-23 | 2018-12-07 | 祥泰浩（天津）科技发展有限公司 | A kind of mass flowmenter for crude oil water content detection |
-
2012
- 2012-11-13 CN CN201210480914.3A patent/CN103808580A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713798A (en) * | 2015-04-03 | 2015-06-17 | 西南石油大学 | Novel method for determining scale-dissolving rate of chelating scale-dissolving agent |
| CN104713798B (en) * | 2015-04-03 | 2017-08-25 | 西南石油大学 | A kind of new method for determining the molten dirty rate of chelating type scale-dissolving agent |
| CN108955791A (en) * | 2018-09-23 | 2018-12-07 | 祥泰浩（天津）科技发展有限公司 | A kind of mass flowmenter for crude oil water content detection |
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Application publication date: 20140521 |