CN104370379A - Anti-scale agent for water-in-oil system in oilfield high-temperature environment as well as preparation method and use of anti-scale agent - Google Patents
Anti-scale agent for water-in-oil system in oilfield high-temperature environment as well as preparation method and use of anti-scale agent Download PDFInfo
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- CN104370379A CN104370379A CN201410551278.8A CN201410551278A CN104370379A CN 104370379 A CN104370379 A CN 104370379A CN 201410551278 A CN201410551278 A CN 201410551278A CN 104370379 A CN104370379 A CN 104370379A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/04—Surfactants, used as part of a formulation or alone
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention provides an anti-scale agent for a water-in-oil system in an oilfield high-temperature environment as well as a preparation method and a use of the anti-scale agent. The anti-scale agent is characterized by being prepared from bis(1,6-hexamethylene triamine penta(methylene phosphonic acid)), a phosphinoacrylic acid multipolymer, poly(epoxy sulfocarboxylic acid), 2-phosphonobutane-1,2,4-tricarboxylic acid and alkylphenol polyoxyethylene ether, wherein the total content of the active constituents of the anti-scale agent is not lower than 40%. The preparation method comprises the following steps: orderly adding the raw materials, mixing evenly, adjusting the pH value to 7, stirring for 20 minutes, cooling until the temperature reaches a room temperature, next, adding water, and finally, adding the emulsifier alkylphenol polyoxyethylene ether and stirring for 15 minutes to obtain the anti-scale agent. The anti-scale agent is applied to the scale prevention use of the water-in-oil system in the high-temperature environment of 200 DEG C and below, and in terms of the water quantity in the oil-water mixture, the use amount of the anti-scale agent is 60-100mg/L.
Description
Technical field
The invention belongs to oil field mining liquid processing technology field, be specifically related to the scale inhibitor of a kind of oil field hot environment water-in-oil system and method for making and purposes.
Background technology
Fouling is problem common in oilfield exploitation, mostly occur at positions such as down-hole oil tube inside and outside wall, screen casing, tail pipe, oil well pump, internal surface of sleeve pipe, oil field manifold, interchanger, steam heaters, main scaling type has calcium carbonate scale, calcium sulfate scale and barium sulfate scale and strontium sulfate scale etc., wherein sulfate scale compact structure, be insoluble to acid, the mode of pickling cannot be used to remove, once fouling hazards is larger.
General oil field mining liquid carries out after oil gas water three phase separation through production separator, the water ratio of fluid is about 20%, belong to water-in-oil system, this fluid through plate-type heat exchanger and the temperature raising of horizontal steam heater two-step heating, then enters electrical dehydrator and isolates qualified crude oil.Wherein moisture about 20% water-in-oil system in aqueous phase be rich in inorganic incrustation ion, under the hot environment of steam heater, very easily form insoluble inorganic salt, especially heat exchange interface temperature is close to 200 DEG C, and so high temperature makes the very easily fouling of this fluid.Steam heater, once there is fouling, not only seriously can increase the heat transfer resistance of steam heater inner pipe wall, reduces the heat transfer efficiency of steam heater, causes the waste of steam resource, but also can add the leakage risk of large equipment due to underdeposit corrosion.Meanwhile, steam heater fouling and clogging also can have influence on normal production, causes unnecessary cost payout and financial loss, and therefore, the antiscale of high temperature oil aqueous phase is very necessary.
In oil-field water process, antiscaling method the most frequently used at present adopts to add scale inhibitor.Scale inhibitor refers to the general designation of a class chemical agent that incrustation scale or dirt can be stoped to produce or suppress its rich long-pending growth on solution and fluidic channel walls.Scale inhibitor is of a great variety, there are inorganic polyphosphate, organic polyhydric alcohol phosphoric acid ester, organophosphate, organophosphorus carboxylic acid, aminopolycanboxylic acid's salt, homopolymer of carboxylic acid, polymers of carboxylic acid and natural compounds, its scale inhibition effect respectively has its advantage and specific aim, but once be applied to ultrahigh-temperature (being greater than 100 DEG C) environment, especially in water-in-oil system, this kind of scale inhibitor due to poor heat stability, be difficult to effectively be diffused into the shortcomings such as aqueous phase, just lose the antiscaling effect that it is good.In the patent published, disclose a kind of with Sodium hexametaphosphate 99, zinc sulfate, polyoxyethylene nonylphenol ether-15, Amino Trimethylene Phosphonic Acid, 2-phosphonic acids-1 in patent CN 103030216A, the scale inhibition performance 85 DEG C time of the high temperature resistant oil field scale inhibitor with emulsifying effect of 2,4-butane tricarboxylate, S-WAT preparation is 95.75%; Patent CN 102167451A discloses a kind of with by polyepoxy sodium succinate, poly (sodium aspartate), polymaleic acid, 2-phosphonic acid butane-1,2,4-tricarboxylic acid, hexanediamine tetramethyl-potassium phosphate salt, hexanediamine be the composite antiscale agent for oil-field flooding process of the polymeric amide preparation of core 50 DEG C time scale inhibition performance all more than 90%; It is also very desirable that patent CN 101863561A discloses a kind of superhigh-temperature circulating water scale inhibitor prepared by hexalin six phosphoric acid ester and multiple-β transistor scale inhibition effect 100 DEG C time.Described in above-mentioned patent, scale inhibitor has good scale inhibition effect under≤100 DEG C of conditions, but when temperature is high again, its performance is just no longer desirable, seldom can be applied to the antiscale of this ultrahigh-temperature of oil field steam heater, high salinity, water-in-oil-type fluid.Therefore, be necessary to develop and be a kind ofly applicable to hyperthermal environments, resistance to high salinity, there is the scale inhibitor of good profit dispersiveness, to prevent the fouling of high temperature service in field produces.
Summary of the invention
The object of the present invention is to provide a kind of be applicable to water-in-oil system under the hot environment of oil field≤200 DEG C scale inhibitor and method for making and purposes, it not only has good anti-scaling property, Heat stability is good, and dosing is low, is effectively diffused in the fluid of water-in-oil-type in aqueous phase and plays antiscaling effect.
The present invention is the scale inhibitor of a kind of oil field hot environment water-in-oil system and method for making and purposes, it is characterized in that:
First the scale inhibitor of water-in-oil system under the hot environment for oil field≤200 DEG C is related to, described scale inhibitor is by two 1,6-two hexamethylene triamine five methene phosphoric acid, phosphino-acrylic-multipolymer, polycyclic oxygen sulphur carboxylic acid, 2-phosphate-1,2,4-butane tricarboxylate, alkylphenol polyoxyethylene composition, the total content of its active principle is not less than 40%, and the weight percent of each active principle is:
Next relates to the preparation method of described scale inhibitor, and concrete steps are as follows:
Add two 1 successively, the two hexamethylene triamine five methene phosphoric acid of 6-, phosphino-acrylic-multipolymer, polycyclic oxygen sulphur carboxylic acid, 2-phosphate-1,2,4-butane tricarboxylate, stir, by the sodium hydroxide adjust ph 7 of 40%, stir 20 minutes, be cooled to room temperature, add a certain amount of water again, finally add emulsifying agent alkylphenol polyoxyethylene, stir 15 minutes, obtain described scale inhibitor.
Also relate to the application purpose that above-mentioned oil field scale inhibitor prevents fouling under the oil field hot environment of≤200 DEG C:
Above-mentioned scale inhibitor is applied to≤hot environment of 200 DEG C under the antiscale purposes of water-in-oil system, wherein, with the water meter in described oil-water mixture; The dosage of described oil field scale inhibitor is 60-100mg/L.
Scaling inhibitor provided by the present invention has the following advantages:
Oil field provided by the invention scale inhibitor is the scale problems for water-in-oil system under the hot environment of oil field, have good thermostability and rapid osmotic oil slick's pervasion to the characteristic of aqueous phase, calcium carbonate, calcium sulfate and the barium sulfate scale common to oil field can play good inhibition.Wherein, two 1,6-two hexamethylene triamine five methene phosphoric acid has splendid thermostability under wider pH scope and high temperature, high to calcium ion tolerance, all has extraordinary scale inhibition effect to carbonate scale in oil field extracted water and sulfate scale; Polycyclic oxygen sulphur carboxylic acid has unique inhibition to sulfate scale, has good biodegradability simultaneously, improves the environment friendly of medicament; Phosphino-acrylic-multipolymer and 2-phosphate-1,2,4-butane tricarboxylate, by synergistic function, play good restraining effect for the formation of calcium carbonate scale in the oil-field water of the hard high-alkali high salinity of height.Alkylphenol polyoxyethylene can reduce the surface tension of water-oil interface, medicament energy rapid permeability oil film is diffused in aqueous phase effectively, plays antiscaling effect.
Accompanying drawing explanation
Fig. 1 is the experiment flow figure of scale inhibitor oil field oil water mixture aqueous phase fouling tendency of the present invention.
Wherein: the on-the-spot oil field oil water compound sample of 1-or preparation oil field oil water compound sample operation;
2-High Temperature High Pressure simulation steam heating apparatus operation;
Before and after 3-contrast reaction, the concentration of aqueous phase incrustation ion, does blank test simultaneously, calculates scale inhibition performance.
Embodiment
Embodiment 1
The preparation of scale inhibitor: be applicable to the scale inhibitor of water-in-oil system under the hyperthermal environments of oil field in composition weight ratio preparation described in table 1, add commercial liquid single dose two 1 successively, the two hexamethylene triamine five methene phosphoric acid of 6-, phosphino-acrylic-multipolymer, polycyclic oxygen sulphur carboxylic acid, 2-phosphate-1, 2, 4-butane tricarboxylate, stir, by the sodium hydroxide adjust ph 7 of 40%, stir 20 minutes, be cooled to room temperature, add emulsifying agent alkylphenol polyoxyethylene, calculate water consumption again, add a certain amount of water, the effective constituent of medicament is made to be 40%, stir 15 minutes, obtain finished product oil field scale inhibitor.
Each single dose sterling weight percent of scale inhibitor prepared by table 1
Obtained scale inhibitor nomenclature of drug HTS-01, HTS-02, HTS-03, HTS-04, HTS-05; Be light yellow clear liquid.
Embodiment 2
The oil-water mixture being respectively 10% and 20% to water ratio adds HTS-01, HTS-02, HTS-03, HTS-04, HTS-05 of 100mg/L respectively, after abundant emulsification pretreatment, is separated, measures the effective concentration of dirt dispersion agent in aqueous phase.
Table 2 dirt dispersion agent profit mutually in dispersiveness
Embodiment 3
In experimentation, adopt the oil-water mixture of preparation oil field oil water blend sample or collection Oil Field, utilize the heat exchange interface temperature of high-temperature high-pressure reaction kettle simulated field steam heating apparatus and the pressure of oil-water mixture, carry out the experiment of oil field oil water mixture aqueous phase fouling tendency, experiment flow is see accompanying drawing Fig. 1.
The configuration of table 3 laboratory has the oil field extracted water water quality of calcium sulfate scaling trend
The aqueous solution configured is placed in laboratory High Temperature High Pressure simulation steam heating apparatus, 180 DEG C of thermostatically heating 2 hours, take out solution after cooling, detect now remaining calcium ion concn, calculate the scale inhibition performance of scale inhibitor, experimental result is as following table:
Table 4 different scale inhibitor calcium sulfate scale-inhibiting properties contrasts
After field produces separator for the steam heater heat exchange interface temperature of heated oil water mixture close to 200 DEG C, so high temperature very easily has dirt to generate, laboratory simulation steam heater heat exchange interface temperature, adding consistency is 80mg/L, carry out evaluation of antisludging performance to scale inhibitor of the present invention, experimental result sees the following form.
Scale inhibitor calcium sulfate scale inhibition performance contrast under table 5 differing temps
Embodiment 4
In experimentation, adopt the oil-water mixture of preparation oil field oil water blend sample or collection Oil Field, utilize the heat exchange interface temperature of high-temperature high-pressure reaction kettle simulated field steam heating apparatus and the pressure of oil-water mixture, carry out the experiment of oil field oil water mixture aqueous phase fouling tendency, experimental formula goes out the water quality of easily knot calcium carbonate scale, and water quality data is as follows:
The configuration of table 6 laboratory has the oil-field water water quality of calcium carbonate scaling trend
The aqueous solution configured is placed in laboratory High Temperature High Pressure simulation steam heating apparatus, 180 DEG C of thermostatically heating 2 hours, take out solution after cooling, detect now remaining calcium ion concn, calculate the scale inhibition performance of scale inhibitor, experimental result is as following table:
Table 7 different scale inhibitor calcium carbonate scale-inhibiting properties contrasts
Carry out the investigation of high temperature experiment scale inhibitor performance, laboratory simulation steam heater heat exchange interface temperature, adding consistency is 80mg/L, and carry out evaluation of antisludging performance to scale inhibitor of the present invention, experimental result sees the following form simultaneously.
Scale inhibitor calcium carbonate scale inhibition performance contrast under table 8 differing temps
Embodiment 5
In experimentation, adopt the oil-water mixture of preparation oil field oil water blend sample or collection Oil Field, utilize the heat exchange interface temperature of high-temperature high-pressure reaction kettle simulated field steam heating apparatus and the pressure of oil-water mixture, carry out the experiment of oil field oil water mixture aqueous phase fouling tendency, experimental formula goes out the water quality of easily knot barium sulfate scale, and water quality data is as follows:
The configuration of table 9 laboratory has the oil field extracted water water quality of barium sulfate scaling trend
The aqueous solution configured is placed in laboratory High Temperature High Pressure simulation steam heating apparatus, 180 DEG C of thermostatically heating 2 hours, take out solution after cooling, detect now remaining barium ion concentration, calculate the scale inhibition performance of scale inhibitor, experimental result is as following table:
Table 10 different scale inhibitor barium sulfate scale-inhibiting properties contrasts
Carry out the evaluation of high temperature experiment scale inhibitor performance, laboratory simulation steam heater heat exchange interface temperature and pressure, adding consistency is 80mg/L, and carry out evaluation of antisludging performance to scale inhibitor of the present invention, experimental result sees the following form simultaneously.
Scale inhibitor barium sulfate scale inhibition performance contrast under table 11 differing temps
Claims (1)
1. the scale inhibitor of oil field hot environment water-in-oil system and method for making and a purposes, is characterized in that:
First the scale inhibitor of water-in-oil system under the hot environment for oil field≤200 DEG C is related to, described scale inhibitor is by two 1,6-two hexamethylene triamine five methene phosphoric acid, phosphino-acrylic-multipolymer, polycyclic oxygen sulphur carboxylic acid, 2-phosphate-1,2,4-butane tricarboxylate, alkylphenol polyoxyethylene composition, the total content of its active principle is not less than 40%, and the weight percent of each active principle is:
Next relates to the preparation method of described scale inhibitor, and concrete steps are as follows:
Add two 1 successively, the two hexamethylene triamine five methene phosphoric acid of 6-, phosphino-acrylic-multipolymer, polycyclic oxygen sulphur carboxylic acid, 2-phosphate-1,2,4-butane tricarboxylate, stir, by the sodium hydroxide adjust ph 7 of 40%, stir 20 minutes, be cooled to room temperature, add a certain amount of water again, finally add emulsifying agent alkylphenol polyoxyethylene, stir 15 minutes, obtain described scale inhibitor;
Also relate to the application purpose that above-mentioned scale inhibitor prevents fouling under the oil field hot environment of≤200 DEG C:
Above-mentioned scale inhibitor is applied to≤hot environment of 200 DEG C under the antiscale purposes of water-in-oil system, wherein, with the water meter in described oil-water mixture; The dosage of described oil field scale inhibitor is 60-100mg/L.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106430425A (en) * | 2016-11-04 | 2017-02-22 | 中海油天津化工研究设计院有限公司 | Reverse osmosis membrane anti-scale agent applicable to garbage leachate treatment system |
| CN111807527A (en) * | 2020-06-30 | 2020-10-23 | 天津正达科技有限责任公司 | Strontium-barium scale inhibitor for oil field water treatment and preparation method thereof |
| CN112466488A (en) * | 2020-11-13 | 2021-03-09 | 南华大学 | CPR1000 nuclear power unit SG simulation device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001070986A (en) * | 1999-09-09 | 2001-03-21 | Fujisawa Pharmaceut Co Ltd | Scale inhibitor and water treatment agent for high temperature and high pressure aqueous system |
| CN1789178A (en) * | 2005-12-15 | 2006-06-21 | 天津化工研究设计院 | Method for preparing biodegradable water treatment agent PECS |
| CN101182643A (en) * | 2007-11-22 | 2008-05-21 | 同济大学 | Environment-friendly type composite pre-film reagent used for recirculated cooling water system pre-film processing and method of use thereof |
| CN101746900A (en) * | 2008-12-01 | 2010-06-23 | 中国石油化工股份有限公司 | Scale inhibitor combination, preparation method thereof and sewage treatment method |
| CN102516525A (en) * | 2011-12-12 | 2012-06-27 | 荣星光 | Method for preparing phosphorus-free corrosion-inhibition scale inhibitor in high-elevation region and application of the phosphorus-free corrosion-inhibition scale inhibitor |
-
2014
- 2014-10-17 CN CN201410551278.8A patent/CN104370379B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001070986A (en) * | 1999-09-09 | 2001-03-21 | Fujisawa Pharmaceut Co Ltd | Scale inhibitor and water treatment agent for high temperature and high pressure aqueous system |
| CN1789178A (en) * | 2005-12-15 | 2006-06-21 | 天津化工研究设计院 | Method for preparing biodegradable water treatment agent PECS |
| CN101182643A (en) * | 2007-11-22 | 2008-05-21 | 同济大学 | Environment-friendly type composite pre-film reagent used for recirculated cooling water system pre-film processing and method of use thereof |
| CN101746900A (en) * | 2008-12-01 | 2010-06-23 | 中国石油化工股份有限公司 | Scale inhibitor combination, preparation method thereof and sewage treatment method |
| CN102516525A (en) * | 2011-12-12 | 2012-06-27 | 荣星光 | Method for preparing phosphorus-free corrosion-inhibition scale inhibitor in high-elevation region and application of the phosphorus-free corrosion-inhibition scale inhibitor |
Non-Patent Citations (2)
| Title |
|---|
| 靳晓霞等: "有机磷类阻垢剂抑制硫酸钙垢行为的研究", 《2008全国水处理技术研讨会论文集》, 30 November 2008 (2008-11-30) * |
| 靳晓霞等: "水合物抑制剂对油田水结垢腐蚀性影响的试验研究", 《工业水处理》, vol. 31, no. 12, 31 December 2011 (2011-12-31) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106430425A (en) * | 2016-11-04 | 2017-02-22 | 中海油天津化工研究设计院有限公司 | Reverse osmosis membrane anti-scale agent applicable to garbage leachate treatment system |
| CN111807527A (en) * | 2020-06-30 | 2020-10-23 | 天津正达科技有限责任公司 | Strontium-barium scale inhibitor for oil field water treatment and preparation method thereof |
| CN112466488A (en) * | 2020-11-13 | 2021-03-09 | 南华大学 | CPR1000 nuclear power unit SG simulation device and method |
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| CN104370379B (en) | 2016-01-20 |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Patentee after: CNOOC TIANJIN CHEMICAL RESEARCH & DESIGN INSTITUTE Co.,Ltd. Patentee after: CNOOC ENERGY TECHNOLOGY & SERVICES Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Patentee before: CNOOC TIANJIN CHEMICAL RESEARCH & DESIGN INSTITUTE Patentee before: CNOOC ENERGY TECHNOLOGY & SERVICES Ltd. |
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Effective date of registration: 20161010 Address after: No. three road 300131 Tianjin city Hongqiao District dingzigu No. 85 Patentee after: CNOOC TIANJIN CHEMICAL RESEARCH & DESIGN INSTITUTE Co.,Ltd. Patentee after: CNOOC ENERGY TECHNOLOGY & SERVICES Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Patentee before: CNOOC TIANJIN CHEMICAL RESEARCH & DESIGN INSTITUTE Co.,Ltd. Patentee before: CNOOC ENERGY TECHNOLOGY & SERVICES Ltd. |