CN104071904A - Device for evaluating anticorrosion and scale preventing performance of anticorrosion and scale-preventing agent on oilfield produced water recycle pipe network - Google Patents
Device for evaluating anticorrosion and scale preventing performance of anticorrosion and scale-preventing agent on oilfield produced water recycle pipe network Download PDFInfo
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- CN104071904A CN104071904A CN201310105466.3A CN201310105466A CN104071904A CN 104071904 A CN104071904 A CN 104071904A CN 201310105466 A CN201310105466 A CN 201310105466A CN 104071904 A CN104071904 A CN 104071904A
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Abstract
The invention relates to an anticorrosion and scale preventing device on sewage pipe network, and specifically relates to a device for evaluating the anticorrosion and scale preventing performance of an anticorrosion and scale-preventing agent on a oilfield produced water recycle pipe network. The device comprises an agent storage tank, a meter pump, a blank reference tube, a non-return valve, a flow meter, a pipeline mixer, and an agent evaluation tube; the two ends of the pipeline mixer are respectively connected to the blank reference tube and the agent evaluation tube through pipelines; the non-return valve and the flow meter are arranged on the connection pipeline between the blank reference tube and the pipeline mixer; and the agent storage tank is arranged between the non-return valve and the pipeline mixer and is communicated with the non-return valve and the pipeline mixer through a pipeline, which is provided with a meter pump. The scale prevention rate and corrosion speed measured by the device can more objectively reflect the anti-corrosion and scale-preventing performance of an agent in the actual application.
Description
Technical field
The present invention relates to sewage network anti-corrosion, scale-inhibiting device, specifically a kind of device of antiseptic corrosion inhibitor to recycle of oil field produced water network anti-corrosion scale-inhibiting properties of evaluating.
Background technology
In recycle of oil field produced water process, because its water quality oleaginousness is high, corrosion and scaling ionic concn is large, and suspension content is high, all kinds of oilfield additive concentration height and the high characteristic of salinity, and there is serious corrosion and fouling in water pipe.In at present numerous anti-corrosion, scale-inhibiting methods, add antiseptic corrosion inhibitor because its technique is simple, successful is widely used.For different quality, the screening of medicament depends primarily on the anti-corrosion, scale-inhibiting performance of this medicament.Antiseptic property and scale-inhibiting properties represent with erosion rate and scale inhibition performance conventionally.
The conventional method of erosion rate is test piece weight-loss method.The size of erosion rate and corrosive medium have very large relation, and in laboratory, corrosive medium is mainly used NaCl, MgCl
26H
2o, Na
2sO
4, CaCl
2, NaHCO
3according to the actual water quality in scene and leading ion composition, with satisfactory reagent, prepare.Although a shortcoming of this method is prepared etchant solution, on ion, can well react on-the-spot truth, practical situation are a complicated system often, is difficult to simulation in laboratory.
The method of inspection of the more classical maturation of scale inhibition performance is EDTA complexometry, i.e. static-state scale inhibition test, and this method is to measure to add calcium ion concn in the solution of Scale inhibitors front and back with Scale inhibitors, the complex ability of calcium ion to be characterized a kind of method of scale inhibition performance.And that actual scale-forming ion is far from calcium ion is a kind of, the result in this way obtaining not is real scale inhibition performance.
In recovered water reuse process, oleaginousness, concentration of suspension and microorganism etc. can be larger affects anti-corrosion, scale-inhibiting performance.So the scale inhibition performance that the above two kinds of methods of utilization record and erosion rate be pharmacy response performance in actual applications really.
Summary of the invention
The object of this invention is to provide a kind of device of antiseptic corrosion inhibitor to oil-field water reuse network anti-corrosion scale-inhibiting properties of evaluating.
For achieving the above object, the technical solution used in the present invention is:
A kind of device of antiseptic corrosion inhibitor to recycle of oil field produced water network anti-corrosion scale-inhibiting properties of evaluating, comprise medicine storing pot, volume pump, blank pipe, vacuum breaker, under meter, line mixer and evaluating drug pipe, wherein the two ends of line mixer are connected with blank pipe and evaluating drug pipe by pipeline respectively; On connecting pipeline between blank tube and tube road mixing tank, be respectively equipped with vacuum breaker and under meter; Described medicine storing pot by pipeline connection in and between, and be provided with volume pump on described pipeline.
Described under meter is connected with electrical control cubicles by wire respectively with volume pump.
Described blank pipe and evaluating drug pipe are respectively hollow pipeline, are provided with vacuum breaker between loop.Described blank pipe and evaluating drug Guan Jun consist of two straight tubes and two U-shaped pipes of threeway.
Oil field extracted water enters described blank pipe the flow ipe mixing tank of controlling by vacuum breaker, by volume pump, antiseptic corrosion inhibitor in medicine storing pot is joined to line mixer simultaneously, in line mixer, make antiseptic corrosion inhibitor fully mix with oil field extracted water, then flow into evaluating drug pipe, and flow out and flow back to again former oil field extracted water reclaiming system by evaluating drug pipe opposite side.
By passing into the blank pipe of oil field extracted water front and back and the weight of evaluating drug pipe, calculate scale inhibition performance and corrosion speed, then evaluate antiseptic corrosion inhibitor to recycle of oil field produced water network anti-corrosion scale-inhibiting properties.
The present invention has advantages of: apparatus of the present invention integrate and add antiseptic corrosion inhibitor and evaluate anti-corrosion, scale-inhibiting performance.During use, only need in original technique, reserve two flange-interfaces, be communicated with apparatus of the present invention.What according to the present invention, can complete medicament quantitatively adds the evaluation with anti-corrosion, scale-inhibiting performance simultaneously.Acquired results is compared laboratory measured value and is had higher accuracy and confidence level, can react more really a kind of practical effect of medicament.
Accompanying drawing explanation
The device schematic diagram that Fig. 1 provides for the embodiment of the present invention.
Specific embodiments
Embodiment 1
Oil recovery factory, Liaohe Oil Field produced-water reinjection surface pipeline network anti-corrosion, scale-inhibiting and effect assessment.
In oil recovery factory, Liaohe Oil Field re-injection ground line, add apparatus of the present invention, apparatus of the present invention comprise medicine storing pot 1, volume pump 2, blank pipe 3, vacuum breaker 4, under meter 5, line mixer 6 and evaluating drug pipe 7, and wherein the two ends of line mixer 6 are connected with blank pipe 3 and evaluating drug pipe 7 by pipeline respectively; On connecting pipeline between blank pipe 3 and line mixer 6, be respectively equipped with vacuum breaker 4 and under meter 5; Described medicine storing pot 1 between 3 and 6, and is provided with volume pump 2 by pipeline connection on described pipeline.
Described under meter 5 is connected with electrical control cubicles 8 by wire respectively with volume pump 2.
Described blank pipe 3 and evaluating drug pipe 7 are respectively hollow pipeline, are provided with vacuum breaker 4 between loop.Described blank pipe 3 and evaluating drug pipe 7 all consist of two straight tubes and two U-shaped pipes of threeway.Meanwhile, specification and the material of blank pipe and evaluating drug pipe are identical with on-the-spot pipeline.
Choose 3 kinds of antiseptic corrosion inhibitors: 2-phosphonic acids-1,2,4-butane tricarboxylate (PBTCA), hydroxyl second methyldiphosphonic acid (HEDP), Amino Trimethylene Phosphonic Acid (ATMP), regulate volume pump according to the under meter value of recording, and makes to add pharmaceutical quantities and be controlled at 70mg/L.Operation is 90 days continuously, by formula (1), (2), calculates scale inhibition performance and erosion rate.Adopt static-state scale inhibition test and test piece weight-loss method measure scale inhibition performance and the erosion rate of this medicament and contrast with on-the-spot acquired results simultaneously.
Table 1 laboratory and on-the-spot anti-corrosion, scale-inhibiting evaluation
Scale inhibition performance: IE
s%=[(Δ G
0-Δ G
1)/Δ G
0] * 100 (formula 1)
Corrosion speed: R=Δ G/ ρ At (formula 2)
Wherein, △ G
0the dirt weight of blank, △ G
1be the dirt weight of dosing contrast, △ G is the weight of each control tube loss.
Embodiment 2: oil recovery factory, Liaohe Oil Field watering pipe network anti-corrosion, scale-inhibiting and effect assessment
In oil recovery factory, Liaohe Oil Field watering pipe network anti-corrosion, scale-inhibiting process Installation apparatus of the present invention, choosing application number is 201110300264.5, name is called the Scale inhibitors in high temperature resistant oil field Scale inhibitors and preparation method thereof the > > patent documentation that mono-kind of < < has emulsifying effect, be Scale inhibitors RZ-01, each Scale inhibitors of RZ-02 and RZ-03(is 201110300264.5 referring to application number, name is called the record in high temperature resistant oil field Scale inhibitors and preparation method thereof the > > patent documentation that mono-kind of < < has emulsifying effect) move continuously 90 days.
Add on-the-spot scale inhibition performance 89.24%, the erosion rate 0.047mm/a of antiseptic corrosion inhibitor RZ-01, laboratory scale inhibition performance 92.22%, erosion rate 0.024mm/a; Add on-the-spot scale inhibition performance 88.73%, the erosion rate 0.052mm/a of anti-corrosion, scale-inhibiting and RZ-02, laboratory scale inhibition performance 90.50%, erosion rate 0.028mm/a; Add on-the-spot scale inhibition performance 90.68%, the erosion rate 0.036mm/a of anti-corrosion, scale-inhibiting and RZ-03, laboratory scale inhibition performance 95.75%, erosion rate 0.019mm/a.
Embodiment 3: high solidifying oily heating boiler anti-corrosion, scale-inhibiting and evaluation
Before and after the high solidifying oily heating boiler in Liaohe Oil Field, apparatus of the present invention are installed, blank pipe is located at before boiler heating, evaluating drug pipe is located at after boiler heating, choosing application number is 201110300264.5, name is called the Scale inhibitors in high temperature resistant oil field Scale inhibitors and preparation method thereof the > > patent documentation that mono-kind of < < has emulsifying effect, be that each Scale inhibitors of Scale inhibitors RZ-04 and RZ-05(is 201110300264.5 referring to application number, name is called the record in high temperature resistant oil field Scale inhibitors and preparation method thereof the > > patent documentation that mono-kind of < < has emulsifying effect) move continuously 60 days.
The on-the-spot scale inhibition performance 90.17% of antiseptic corrosion inhibitor RZ-04, erosion rate 0.039mm/a, laboratory records scale inhibition performance 94.74%, erosion rate 0.017mm/a; The on-the-spot scale inhibition performance 89.52% of antiseptic corrosion inhibitor RZ-05, erosion rate 0.044mm/a, laboratory records scale inhibition performance 93.83%, erosion rate 0.021mm/a.
Claims (5)
1. evaluate the device of antiseptic corrosion inhibitor to recycle of oil field produced water network anti-corrosion scale-inhibiting properties for one kind, it is characterized in that: comprise medicine storing pot (1), volume pump (2), blank pipe (3), vacuum breaker (4), under meter (5), line mixer (6) and evaluating drug pipe (7), wherein the two ends of line mixer (6) are connected with blank pipe (3) and evaluating drug pipe (7) by pipeline respectively; On connecting pipeline between blank pipe (3) and line mixer (6), be respectively equipped with vacuum breaker (4) and under meter (5); Described medicine storing pot (1) between (3) and (6), and is provided with volume pump (2) by pipeline connection on described pipeline.
2. by the device of evaluation antiseptic corrosion inhibitor claimed in claim 1 to recycle of oil field produced water network anti-corrosion scale-inhibiting properties, it is characterized in that: described under meter (5) is connected with electrical control cubicles (8) by wire respectively with volume pump (2).
3. by the device of evaluation antiseptic corrosion inhibitor claimed in claim 1 to recycle of oil field produced water network anti-corrosion scale-inhibiting properties, it is characterized in that: described blank pipe (3) and evaluating drug pipe (7) are respectively hollow pipeline, are provided with vacuum breaker (4) between loop.
4. by the device of evaluation antiseptic corrosion inhibitor claimed in claim 1 to recycle of oil field produced water network anti-corrosion scale-inhibiting properties, it is characterized in that: described blank pipe (3) and evaluating drug pipe (7) all consist of two straight tubes and two U-shaped pipes of threeway.
5. by the device of evaluation antiseptic corrosion inhibitor claimed in claim 1 to recycle of oil field produced water network anti-corrosion scale-inhibiting properties, it is characterized in that: oil field extracted water enters described blank pipe (3) the flow ipe mixing tank (6) of controlling by vacuum breaker (4), by volume pump (2), the interior antiseptic corrosion inhibitor of medicine storing pot (1) is joined to line mixer (6) simultaneously, in line mixer (6), antiseptic corrosion inhibitor is fully mixed with oil field extracted water, then flow into evaluating drug pipe (7), and flow out and flow back to again former oil field extracted water reclaiming system by evaluating drug pipe (7) opposite side.
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|---|---|---|---|
| CN201310105466.3A CN104071904B (en) | 2013-03-28 | 2013-03-28 | A kind ofly evaluate the device of antiseptic corrosion inhibitor to recycle of oil field produced water network anti-corrosion scale-inhibiting properties |
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|---|---|---|---|
| CN201310105466.3A CN104071904B (en) | 2013-03-28 | 2013-03-28 | A kind ofly evaluate the device of antiseptic corrosion inhibitor to recycle of oil field produced water network anti-corrosion scale-inhibiting properties |
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| CN104071904A true CN104071904A (en) | 2014-10-01 |
| CN104071904B CN104071904B (en) | 2015-10-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732304A (en) * | 2018-04-12 | 2018-11-02 | 西南石油大学 | A kind of non-metallic pipe pipe water delivery dynamic scale formation experiment circuit and method |
| CN113716706A (en) * | 2020-05-25 | 2021-11-30 | 中国石油化工集团有限公司 | Scale inhibition effect detection system |
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|---|---|---|---|---|
| CN1670136A (en) * | 2004-03-15 | 2005-09-21 | 中国石油化工股份有限公司 | Method for evaluating antiscale agent in petrochemical processing |
| CN1699191A (en) * | 2005-05-25 | 2005-11-23 | 天津化工研究设计院 | Method for testing scale and corrosion inhibition performance of reagent and apparatus for boiler water treatment |
| CN1804618A (en) * | 2005-11-22 | 2006-07-19 | 天津化工研究设计院 | Apparatus and method for testing and evaluating performance of medicament for water treatment with reverse osmosis membrane |
| CN1987411A (en) * | 2006-12-21 | 2007-06-27 | 天津化工研究设计院 | Evaluating device and its method for atmospheric boiler water treating medicine property |
-
2013
- 2013-03-28 CN CN201310105466.3A patent/CN104071904B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1670136A (en) * | 2004-03-15 | 2005-09-21 | 中国石油化工股份有限公司 | Method for evaluating antiscale agent in petrochemical processing |
| CN1699191A (en) * | 2005-05-25 | 2005-11-23 | 天津化工研究设计院 | Method for testing scale and corrosion inhibition performance of reagent and apparatus for boiler water treatment |
| CN1804618A (en) * | 2005-11-22 | 2006-07-19 | 天津化工研究设计院 | Apparatus and method for testing and evaluating performance of medicament for water treatment with reverse osmosis membrane |
| CN1987411A (en) * | 2006-12-21 | 2007-06-27 | 天津化工研究设计院 | Evaluating device and its method for atmospheric boiler water treating medicine property |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732304A (en) * | 2018-04-12 | 2018-11-02 | 西南石油大学 | A kind of non-metallic pipe pipe water delivery dynamic scale formation experiment circuit and method |
| CN113716706A (en) * | 2020-05-25 | 2021-11-30 | 中国石油化工集团有限公司 | Scale inhibition effect detection system |
| CN113716706B (en) * | 2020-05-25 | 2024-02-02 | 中国石油化工集团有限公司 | Scale inhibition effect detecting system |
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| CN104071904B (en) | 2015-10-21 |
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