CN105254040B - A kind of oil field reinjection water corrosion inhibiting and descaling agent and preparation method thereof - Google Patents
A kind of oil field reinjection water corrosion inhibiting and descaling agent and preparation method thereof Download PDFInfo
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- CN105254040B CN105254040B CN201510738533.4A CN201510738533A CN105254040B CN 105254040 B CN105254040 B CN 105254040B CN 201510738533 A CN201510738533 A CN 201510738533A CN 105254040 B CN105254040 B CN 105254040B
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Abstract
The invention provides a kind of corrosion inhibiting and descaling agent, belongs to Treatment of Industrial Water technical field.The corrosion inhibiting and descaling agent is prepared by the raw material of following parts by weight：30 50 parts of octatecatrienoic acid, 18 35 parts of glycerine, 12 25 parts of Epoxysuccinic acid, 10 20 parts of acrylic acid, 5 15 parts of initiator, 30 50 parts of copolymer of phosphono carboxylic acid, 5 10 parts of dodecyl benzyl dimethyl ammonium chloride.The corrosion inhibiting and descaling agent can effectively act as anticorrosion-antiscaling effect for the re-injection water system in the environment of high temperature and high salinity high corrosion, ensure the normal operation of water injection equipment and pipeline.
Description
Technical field：
The invention belongs to Treatment of Industrial Water technical field, is related to a kind of oil field reinjection water corrosion-mitigation scale-inhibition used for tertiary oil recovery
Agent.
Background technology：
Water is the existence sheet of the mankind, and the pollution of water resource is with the development of the society, domestic petroleum, the high speed of chemical engineering industry
The industries such as development, petrochemical industry, steel are large-scale, coming into operation for ultra-large type heat transmission equipment is on the rise, therefore improve the repetition profit of water
With rate, requirement to water treatment agent also more and more higher.With gradually stepping up for people's environmental consciousness, the concept of green scale inhibitor is
It is suggested and turns into current and developing direction from now on.
For the water temperature of oil field reinjection water typically more than 60 DEG C, water quality is poor, and water injection equipment, the material of pipeline are generally
Carbon steel, easily cause corrosion and scaling, have a strong impact on crude oil production progress.To solve the corrosion and scaling of equipment and pipeline, to note
Water system adds corrosion inhibiting and descaling agent has turned into current widely used means.
The anti-incrustation corrosion inhibitor used at present is mostly organophosphor system and polymer, is that corrosion inhibiter and antisludging agent are answered mostly
With use, these materials are complicated in oil field reinjection water system material, are easily reacted under the high environment of temperature, cause scale inhibition to delay
Erosion effect does not reach expected purpose, and the present invention can be effective for the re-injection water system in the environment of high temperature and high salinity high corrosion
Ground plays anticorrosion-antiscaling effect, ensures the normal operation of water injection equipment and pipeline.
The content of the invention：
It is an object of the invention to：A kind of oil field reinjection water corrosion inhibiting and descaling agent is provided, for delaying crude oil three to adopt process
The service life of the corrosion and fouling of middle oil field reinjection water devices in system, extension device and pipeline.
The corrosion inhibiting and descaling agent is prepared by the raw material of following parts by weight：Octatecatrienoic acid 30-50 parts, glycerine 18-
35 parts, Epoxysuccinic acid 12-25 parts, acrylic acid 10-20 parts, initiator 5-15 parts, copolymer of phosphono carboxylic acid 30-50 parts, ten
Dialkyl dimethyl benzyl ammonium chloride 5-10 parts；
Specific preparation process is as follows：
A, octatecatrienoic acid is added in A reactors and is warming up to 60 DEG C, add glycerine；95 DEG C are warming up to, control temperature
Degree stirring 4h；
B, Epoxysuccinic acid is added into B reactors, is warming up to 70 DEG C, add acrylic acid, keeping temperature reaction 4h；
C, by A, the material in B reactors is added in C reactors simultaneously, is warming up to 120 ± 5 DEG C, adds initiator；Backflow
2h is reacted, is cooled to room temperature, adds copolymer of phosphono carboxylic acid, dodecyl benzyl dimethyl ammonium chloride, stirs and both obtains
The corrosion inhibiting and descaling agent；
Described initiator is ammonium persulfate or potassium peroxydisulfate.
Beneficial effect：
1st, the present invention can effectively act as inhibition resistance for the re-injection water system in the environment of high temperature and high salinity high corrosion
Dirty effect, ensure the normal operation of water injection equipment and pipeline；
2nd, dosage is small, and corrosion inhibition rate and scale inhibition performance are high, and dosage is that 40-60mg/L can make rate of corrosion in use
It is down to 0.075-0.071mm/a；
3rd, delay crude oil three adopt during oil field reinjection water devices in system corrosion and fouling, extension device and pipeline
The service life of cleaning frequency, effective guarantee equipment and pipeline.
Embodiment：
Embodiment 1, a kind of corrosion inhibiting and descaling agent
A kind of corrosion inhibiting and descaling agent, it is prepared by the raw material of following parts by weight：30 parts of octatecatrienoic acid, glycerine 35
Part, 12 parts of Epoxysuccinic acid, 20 parts of acrylic acid, 5 parts of ammonium persulfate, 50 parts of copolymer of phosphono carboxylic acid, dodecyl dimethyl
5 parts of benzyl ammonium chloride.
Embodiment 2, a kind of corrosion inhibiting and descaling agent
A kind of corrosion inhibiting and descaling agent, it is prepared by the raw material of following parts by weight：40 parts of octatecatrienoic acid, glycerine 25
Part, 18 parts of Epoxysuccinic acid, 15 parts of acrylic acid, 10 parts of ammonium persulfate, 40 parts of copolymer of phosphono carboxylic acid, dodecyl dimethyl
8 parts of benzyl ammonium chloride.
Embodiment 3, a kind of corrosion inhibiting and descaling agent
A kind of corrosion inhibiting and descaling agent, it is prepared by the raw material of following parts by weight：50 parts of octatecatrienoic acid, glycerine 18
Part, 25 parts of Epoxysuccinic acid, 10 parts of acrylic acid, 15 parts of ammonium persulfate, 30 parts of copolymer of phosphono carboxylic acid, dodecyl dimethyl
10 parts of benzyl ammonium chloride.
Embodiment 4, a kind of preparation method of corrosion inhibiting and descaling agent
A, octatecatrienoic acid is added in A reactors and is warming up to 60 DEG C, add glycerine；95 DEG C are warming up to, control temperature
Degree stirring 4h；
B, Epoxysuccinic acid is added into B reactors, is warming up to 70 DEG C, add acrylic acid, keeping temperature reaction 4h；
C, the material in two reactors of A, B is added in C reactors simultaneously, is warming up to 120 ± 5 DEG C, add initiator；
Back flow reaction 2h, is cooled to room temperature；Initiator is ammonium persulfate or potassium peroxydisulfate；
D, copolymer of phosphono carboxylic acid is added into C reactors, dodecyl benzyl dimethyl ammonium chloride, is stirred both
Obtain product.
Embodiment 5, corrosion inhibiting and descaling agent effect assessment：
According to the preparation method described in embodiment 4, it is prepared into 3 kinds of differences by the raw material composition described in embodiment 1-3 and delays
After losing antisludging agent, corrosion inhibiting and descaling agent is evaluated according to standard Q/SY126-2007 " oil field water process corrosion inhibiting and descaling agent technical requirements "
Performance：
The corrosion inhibition of table 1 is evaluated
It can be seen that this product dosage is small and corrosion mitigating effect is notable by the data of table 1.
The evaluation of antisludging performance of table 2
| Medicament | Dosage/mg/L | CaCO3Scale inhibition performance % | CaSO4Scale inhibition performance % | BaSO4Scale inhibition performance % |
| Embodiment 1 | 50 | 93.2 | 92.2 | 91.6 |
| Embodiment 2 | 50 | 92.6 | 91.8 | 90.9 |
| Embodiment 3 | 50 | 93.1 | 91.6 | 91.3 |
| Poly-aspartate | 50 | 86.4 | 79.2 | 71.3 |
| Poly-epoxy succinic acid | 50 | 82.6 | 78.3 | 71.5 |
| PBTCA | 50 | 80.2 | 71.8 | 67.9 |
This product is can be seen that in the case of dosage identical by the data of table 2, and scale inhibition performance is far longer than conventional antisludging agent.
Spot effect is verified：
The reinjected water water analysis of two factories of Xinjiang oil extraction in oil field is as shown in table 3：
Table 3
Because reinjected water water quality is complicated, salinity is high, formation temperature up to 75 DEG C, cause the water injection equipment and pipeline scaling,
Corrosion, corrosion rate 2.86mm/a, pipeline scale thickness reach 15-56mm, average thickness 38mm, add common corrosion-mitigation scale-inhibition
Agent, scale inhibitor DeGrain, often run needs to carry out a pipeline cleaning for 3 months.In May, 2014 adds the institute of embodiment 2
The corrosion inhibiting and descaling agent stated, final dosage are 50mg/L, can guarantee that the normal operation of pipeline, detect lacing film in July, 2015, put down
Equal rate of corrosion be 0.072mm/a, and pipeline scale thickness is 0-8mm, average thickness 3mm, and pipeline is not cleaned so far, operation
Normally.
Claims (5)
1. a kind of corrosion inhibiting and descaling agent, it is characterised in that the corrosion inhibiting and descaling agent is prepared by the raw material of following parts by weight：18 carbon
Trienic acid 30-50 parts, glycerine 18-35 parts, Epoxysuccinic acid 12-25 parts, acrylic acid 10-20 parts, initiator 5-15 parts, phosphono
Carboxylic acid copolymer's 30-50 parts, dodecyl benzyl dimethyl ammonium chloride 5-10 parts.
2. a kind of corrosion inhibiting and descaling agent as claimed in claim 1, it is characterised in that the initiator is ammonium persulfate or persulfuric acid
Potassium.
3. a kind of corrosion inhibiting and descaling agent as claimed in claim 1, it is characterised in that the corrosion inhibiting and descaling agent is by following parts by weight
Raw material prepare：30 parts of octatecatrienoic acid, 35 parts of glycerine, 12 parts of Epoxysuccinic acid, 20 parts of acrylic acid, 5 parts of ammonium persulfate,
50 parts of copolymer of phosphono carboxylic acid, 5 parts of dodecyl benzyl dimethyl ammonium chloride.
A kind of 4. method for preparing corrosion inhibiting and descaling agent described in claim 1-3 any one, it is characterised in that step is as follows：
A, octatecatrienoic acid is added in A reactors and is warming up to 60 DEG C, add glycerine；95 DEG C are warming up to, control temperature is stirred
Mix 4h；
B, Epoxysuccinic acid is added into B reactors, is warming up to 70 DEG C, add acrylic acid, keeping temperature reaction 4h；
C, by A, the material in B reactors is added in C reactors simultaneously, is warming up to 120 ± 5 DEG C, adds initiator；Back flow reaction
2h, room temperature is cooled to, adds copolymer of phosphono carboxylic acid, dodecyl benzyl dimethyl ammonium chloride, stirring, it is described both to obtain
Corrosion inhibiting and descaling agent.
5. application of the corrosion inhibiting and descaling agent in Treatment of Industrial Water described in claim 1-3 any one.
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| CN112023711A (en) * | 2019-06-04 | 2020-12-04 | 福州源洁环保科技有限公司 | RO reverse osmosis membrane treating agent and preparation method thereof |
| CN111704250B (en) * | 2020-06-19 | 2022-05-06 | 德蓝水技术股份有限公司 | Neutral corrosion and scale inhibitor for oil field and preparation method thereof |
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| FR2751335B1 (en) * | 1996-07-19 | 1998-08-21 | Coatex Sa | PROCESS FOR OBTAINING WATER-SOLUBLE POLYMERS, POLYMERS OBTAINED AND USES THEREOF |
| FR2795432B1 (en) * | 1999-06-28 | 2001-08-24 | Atofina | CORROSION INHIBITOR COMPOSITIONS FOR HEAT TRANSFER FLUIDS |
| CN102344790B (en) * | 2010-12-13 | 2013-06-19 | 新疆德蓝股份有限公司 | Preparation of corrosion and scale inhibitor for oil field reinjection water |
| CN103359838B (en) * | 2012-04-10 | 2014-09-10 | 上海依科绿色工程有限公司 | High-performance compound corrosion-inhibiting and anti-scaling agent containing galvanized material in closed high-temperature hot water system as well as preparation and application of high-performance compound corrosion-inhibiting and anti-scaling agent |
| CN104609578B (en) * | 2013-11-01 | 2017-01-11 | 湖州欧美新材料有限公司 | Multi-component corrosion and scale inhibitor |
| CN104445648A (en) * | 2014-11-14 | 2015-03-25 | 天津大港油田滨港集团博弘石油化工有限公司 | Corrosion and scale inhibitor for oilfield water injection treatment |
| CN104556427A (en) * | 2015-01-15 | 2015-04-29 | 鞍钢贝克吉利尼水处理有限公司 | Composite efficient corrosion and scale inhibitor for ammonia still water treatment |
| CN104893698B (en) * | 2015-05-21 | 2018-04-27 | 北京化工大学 | A kind of water injection well comprehensive treatment agent and preparation method thereof |
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Effective date of registration: 20180920 Address after: 100089 Haidian District, Beijing, Shanghai Information Industry Base Development Road No. 1 B block 3, 3060 Patentee after: De LAN (Beijing) environment Co., Ltd. Address before: 830013 the Xinjiang Uygur Autonomous Region Urumqi high tech Zone (new town) North District Industrial Park, 216 Lantian Road Patentee before: Xinjiang Delan Co., Ltd. |
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Effective date of registration: 20190415 Address after: 830013 the Xinjiang Uygur Autonomous Region Urumqi high tech Zone (new town) North District Industrial Park, 216 Lantian Road Patentee after: De blue water technology, Limited by Share Ltd Address before: 100089 Haidian District, Beijing, Shanghai Information Industry Base Development Road No. 1 B block 3, 3060 Patentee before: De LAN (Beijing) environment Co., Ltd. |
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