CN106554804B - A kind of oil field antiscale desulfurizing agent and preparation method thereof - Google Patents
A kind of oil field antiscale desulfurizing agent and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G29/00—Refining of hydrocarbon oils, in the absence of hydrogen, with other chemicals
- C10G29/20—Organic compounds not containing metal atoms
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G75/00—Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general
- C10G75/04—Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general by addition of antifouling agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1033—Oil well production fluids
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
- C10G2300/202—Heteroatoms content, i.e. S, N, O, P
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- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The present invention relates to chemical sulphur removal fields, disclose a kind of oil field antiscale desulfurizing agent and preparation method thereof, the oil field antiscale desulfurizing agent is prepared by host agent addition modifying agent, synergist, dispersant, and host agent is refining to obtain using organic amine and formalin as polymerizable raw material dehydration；Preparation method is completed temperature control after being added dropwise and is reacted, and obtain host agent after decompression dehydration under certain vacuum degree and temperature condition first to be stirred organic amine under the conditions of certain temperature and formalin being added dropwise；Then controlling reaction temperature, dropwise addition modifying agent is reacted in host agent；It finally adds synergist and dispersant successively in the reaction product, and stirs to uniformly mixed.The oil field antiscale desulfurizing agent of the present invention has nitrogenous triazine structure, it is ensured that efficient desulfurization effect, and phosphate functional group is introduced in molecule, while there are excellent scale-inhibiting properties.Therefore, antiscale desulfurizing agent in oil field of the invention possesses preferable desulfurization and anti-scaling property simultaneously, suitable for the sweetening process of oil field production liquid.
Description
Technical field
The present invention relates to the liquid desulfurizing agents in chemical sulphur removal field, and in particular to a kind of oil field antiscale desulfurizing agent and its system
Preparation Method.
Background technology
In oilfield exploitation procedure, crude oil can generate hydrogen sulfide in underground through microorganism decomposition, and organic sulfur exists in crude oil
Hydrogen sulfide can be also generated after high temperature or hydrothermal cracking.When crude oil vapor detaches, a large amount of hydrogen sulfide can be with natural gas one
It rises and enters vapor phase treatment system.Hydrogen sulfide is that have very strong toxicity and irritating gas, not only harmful to human, pollution environment,
And heavy corrosion can be generated to pipeline and relevant device.
Filling liquid desulfurizing agent is the effective means for removing hydrogen sulfide, triazines desulfurizing agent and other liquid desulfurizing agent phases
Than with H2S reaction speeds and selectivity aspect have significant advantage, are the most common desulfurizing agent products of offshore oilfield.
But triazines desulfurizing agent is alkaline desulfurizing agent, easily lead to after filling process in oil field production liquid calcium and magnesium from
Son deposition blocks sea pipe, influences the normal exploitation in oil field.
Invention content
To be solved by this invention is that triazines desulfurizing agent is easy to cause calcium ions and magnesium ions in oil field production liquid in use
The technical issues of deposition, provide a kind of oil field antiscale desulfurizing agent and preparation method thereof, while synthesis of triazine compound
Phosphate functional group is introduced in its molecule so that target product not only has efficient desulfurization performance, while has good anti-
Dirty ability；Preparation method is simply controllable, is suitable for industrialized production.
In order to solve the above-mentioned technical problem, the present invention is achieved by following technical solution：
A kind of oil field antiscale desulfurizing agent, the oil field antiscale desulfurizing agent are prepared by host agent addition modifying agent, synergist, dispersant
It forms；Wherein, the mass fraction of the host agent is 60-80%, and the mass fraction of the modifying agent is 5-10%, the synergist
Mass fraction for 5-10%, remaining is the dispersant；The host agent is to be taken off using organic amine and formalin as polymerizable raw material
Crystal's system forms, and wherein the molar ratio of organic amine and formaldehyde is (1~2)：1；
And the oil field antiscale desulfurizing agent is obtained by following preparation method：
(1) first organic amine is added in reaction kettle, stirring is warming up to 65 DEG C, is then added dropwise under 65-75 DEG C of temperature condition
Formalin 1-2h completes 65-75 DEG C of temperature control after being added dropwise and reacts 1-3 hours, is finally -0.09~-0.1MPa, temperature in vacuum degree
Spend be 70-80 DEG C under the conditions of decompression dehydration 5h, you can obtain the host agent；
(2) host agent, 70-80 DEG C of controlling reaction temperature obtained by step (1) are taken, the modifying agent is added dropwise, reaction 2-3 is small
When；
(3) synergist and the dispersant are added successively in step (2) products therefrom, and is stirred equal to mixing
It is even, obtain oil field antiscale desulfurizing agent.
A kind of preparation method of oil field antiscale desulfurizing agent, this method follow the steps below：
(1) first organic amine is added in reaction kettle, stirring is warming up to 65 DEG C, is then added dropwise under 65-75 DEG C of temperature condition
The molar ratio of formalin 1-2h, wherein organic amine and formaldehyde are (1~2)：1；Complete 65-75 DEG C of reaction 1-3 of temperature control after being added dropwise
Hour, the last decompression dehydration 5h under the conditions of vacuum degree is -0.09~-0.1MPa, temperature is 70-80 DEG C, you can obtain host agent；
(2) host agent obtained by step (1) is taken, modifying agent is added dropwise in 70-80 DEG C of controlling reaction temperature, reacts 2-3 hours；
(3) synergist and dispersant are added successively in step (2) products therefrom, and is stirred to being uniformly mixed, is obtained
Oil field antiscale desulfurizing agent；
Wherein, the mass fraction of the host agent is 60-80%, and the mass fraction of the modifying agent is 5-10%, the increasing
The mass fraction for imitating agent is 5-10%, remaining is the dispersant.
In above-mentioned oil field antiscale desulfurizing agent and preparation method thereof：
The organic amine is methylamine solution, ethanol amine, ethylenediamine, 3 methoxypropyl amine, diethylenetriamine, polyethylene polyamine
At least one of.
The modifying agent is phosphoric acid solution.
The synergist is at least one of piperazine, N methyldiethanol amine, sulfolane.
The dispersant is at least one of methanol, ethyl alcohol, ethylene glycol.
The beneficial effects of the invention are as follows：
The oil field antiscale desulfurizing agent of the present invention has nitrogenous triazine structure, it is ensured that efficient desulfurization effect, and point
Contain multiple organic phospho acid ester structure-C-O-PO in son3H2, can be with Ca2+、Mg2+Plasma forms the cyclic chelate of macromolecular
Object makes it have excellent scale-inhibiting properties simultaneously.Therefore, antiscale desulfurizing agent in oil field of the invention have simultaneously preferable desulfurization and
Anti-scaling property, suitable for the sweetening process of oil field production liquid.Meanwhile the preparation method of antiscale desulfurizing agent in oil field of the invention simply may be used
Control, is suitable for industrialized production.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail：
Following embodiment can make those skilled in the art that the present invention be more completely understood, but not limit this in any way
Invention.
Embodiment 1：
A kind of synthesis of oil field antiscale desulfurizing agent, the modification that the host agent for being 70% by mass fraction, mass fraction are 5%
The dispersant that synergist that agent, mass fraction are 5%, mass fraction are 20% is prepared, and synthesis step is as follows：
(1) first 305.4g ethanol amines are added in reaction kettle, stirring is warming up to 65 DEG C, and formalin is added dropwise, and (chemistry is pure, has
Mass percent is imitated as 37%) 405.8g, time for adding 1h, temperature control is 65-75 DEG C；It completes after being added dropwise, 65-75 DEG C of temperature control
Reaction 3 hours, then the decompression dehydration 5h at -0.09~-0.1MPa, 70-80 DEG C of temperature, obtains host agent；
Wherein the molar ratio of organic amine and formaldehyde is 1：1, it rubs by the effective mass percentage calculating of formaldehyde in formalin
That ratio.
(2) the host agent 140g obtained by step (1) is taken, 70-80 DEG C of controlling reaction temperature, phosphoric acid solution is added dropwise, and (chemistry is pure, has
Mass percent is imitated as 85%) 10g, is reacted 3 hours.
(3) N methyldiethanol amine 5g, sulfolane 5g, methanol 20g, ethylene glycol are sequentially added in the product of step (2)
20g is uniformly mixed, and obtains the oil field antiscale desulfurizing agent of the present embodiment.
Embodiment 2：
A kind of synthesis of oil field antiscale desulfurizing agent, the modification that the host agent for being 80% by mass fraction, mass fraction are 10%
Agent, mass fraction by 8% synergist, mass fraction be made of 2% dispersant, synthesis step is as follows：
(1) first 610.8g ethanol amines are added in reaction kettle, stirring is warming up to 65 DEG C, and formalin is added dropwise, and (chemistry is pure, has
Mass percent is imitated as 37%) 405.8g, time for adding 2h, temperature control is 65-75 DEG C；It completes after being added dropwise, 65-75 DEG C of temperature control
Reaction 2 hours, then the decompression dehydration 5h at -0.09~-0.1MPa, 70-80 DEG C of temperature, obtains product host agent；
Wherein the molar ratio of organic amine and formaldehyde is 2：1, it rubs by the effective mass percentage calculating of formaldehyde in formalin
That ratio.
(2) the host agent 160g obtained by step (1) is taken, 70-80 DEG C of controlling reaction temperature, phosphoric acid solution is added dropwise, and (chemistry is pure, has
Mass percent is imitated as 85%) 20g, is reacted 2 hours；
(3) N methyldiethanol amine 12g, piperazine 4g, methanol 4g are sequentially added in the product of step (2), is stirred
Uniformly, the oil field antiscale desulfurizing agent of the present embodiment is obtained.
Embodiment 3：
A kind of synthesis of oil field antiscale desulfurizing agent, the modification that the host agent for being 60% by mass fraction, mass fraction are 10%
Agent, mass fraction by 10% synergist, mass fraction be made of 20% dispersant, synthesis step is as follows：
(1) first by 305.4g ethanol amines, 50.08 methylamine solutions (chemistry it is pure, effective mass percentage for 40%), 20.05g
Ethylenediamine is added in reaction kettle, and stirring is warming up to 65 DEG C, and formalin is added dropwise, and (chemistry is pure, 37%) effective mass percentage is
405.8g；Time for adding 1.5h, temperature control are 65-75 DEG C.Complete after being added dropwise, 65-75 DEG C of temperature control reacts 1 hour, then-
Decompression dehydration 5h at 0.09~-0.1MPa, 70-80 DEG C of temperature, obtains product host agent；
Wherein the molar ratio of organic amine and formaldehyde is 1.2：1, it is calculated by the effective mass percentage of formaldehyde in formalin
Molar ratio.
(2) the host agent 120g obtained by step (1) is taken, 70-80 DEG C of controlling reaction temperature, phosphoric acid solution is added dropwise, and (chemistry is pure, has
Mass percent is imitated as 85%) 20g, is reacted 2.5 hours.
(3) N methyldiethanol amine 20g, ethyl alcohol 40g are sequentially added in the product of step (2), is uniformly mixed, i.e.,
The oil field antiscale desulfurizing agent of the present embodiment is made.
Embodiment 4：
A kind of synthesis of oil field antiscale desulfurizing agent, the modification that the host agent for being 80% by mass fraction, mass fraction are 8%
Agent, mass fraction by 10% synergist, mass fraction be made of 2% dispersant, synthesis step is as follows：
(1) first 305.4g ethanol amines, 32.18g3- methoxy propanamines, 56.18g diethylenetriamines are added in reaction kettle,
Stirring is warming up to 65 DEG C, and formalin is added dropwise, and (chemistry is pure, and effective mass percentage is 37%) 405.8g, time for adding 1h, temperature
Degree control is 65-75 DEG C；It completes after being added dropwise, 65-75 DEG C of temperature control reacts 3 hours, then in -0.09~-0.1MPa, temperature 70-
Decompression dehydration 5h at 80 DEG C, obtains product host agent；
Wherein the molar ratio of organic amine and formaldehyde is 1.18：1, it is calculated by the effective mass percentage of formaldehyde in formalin
Molar ratio.
(2) the host agent 160g obtained by step (1) is taken, 70-80 DEG C of controlling reaction temperature, phosphoric acid solution is added dropwise, and (chemistry is pure, has
Mass percent is imitated as 85%) 16g, is reacted 2 hours；
(3) N methyldiethanol amine 10g, piperazine 10g, ethyl alcohol 4g are sequentially added in the product of step (2), is stirred
Uniformly, the oil field antiscale desulfurizing agent of the present embodiment is obtained.
Embodiment 5：
A kind of synthesis of oil field antiscale desulfurizing agent, the modification that the host agent for being 75% by mass fraction, mass fraction are 10%
Agent, mass fraction by 6% synergist, mass fraction be made of 9% dispersant, synthesis step is as follows：
(1) first 305.4g ethanol amines, 38.78g3- methoxy propanamines, 80.97g polyethylene polyamines are added in reaction kettle,
Stirring is warming up to 65 DEG C, and formalin is added dropwise, and (chemistry is pure, and effective mass percentage is 37%) 405.8g, time for adding 2h, temperature
Degree control is 65-75 DEG C；It completes after being added dropwise, 65-75 DEG C of temperature control reacts 2 hours, then in -0.09~-0.1MPa, temperature 70-
Decompression dehydration 5h at 80 DEG C, obtains product host agent；
Wherein the molar ratio of organic amine and formaldehyde is 1.25：1, it is calculated by the effective mass percentage of formaldehyde in formalin
Molar ratio.
(2) the host agent 150g obtained by step (1) is taken, 70-80 DEG C of controlling reaction temperature, phosphoric acid solution is added dropwise, and (chemistry is pure, has
Mass percent is imitated as 85%) 20g, is reacted 3 hours；
(3) N methyldiethanol amine 12g, ethyl alcohol 8g, ethylene glycol 10g are sequentially added in the product of step (2), stirring is mixed
Close the oil field antiscale desulfurizing agent for uniformly, obtaining the present embodiment.
Embodiment 6：
A kind of synthesis of oil field antiscale desulfurizing agent, the modification that the host agent for being 75% by mass fraction, mass fraction are 10%
Agent, mass fraction by 6% synergist, mass fraction be made of 9% dispersant, synthesis step is as follows：
(1) first by methylamine solution, (chemistry is pure, and effective mass percentage is added in for 40%) 621g in reaction kettle, stirring heating
To 65 DEG C, formalin is added dropwise, and (chemistry is pure, and effective mass percentage is 37%) 405.8g, time for adding 2h, and temperature, which controls, is
65-75℃.It completes after being added dropwise, 65-75 DEG C of temperature control reacts 2 hours, then subtracts at -0.09~-0.1MPa, 70-80 DEG C of temperature
Press-dehydrating 5h obtains product host agent；
Wherein the molar ratio of organic amine and formaldehyde is 1.6：1, it is calculated by the effective mass percentage of formaldehyde in formalin
Molar ratio.
(2) the host agent 150g obtained by step (1) is taken, 70-80 DEG C of controlling reaction temperature, phosphoric acid solution is added dropwise, and (chemistry is pure, has
Mass percent is imitated as 85%) 20g, is reacted 3 hours；
(3) piperazine 12g, ethyl alcohol 18g are sequentially added in the product of step (2), is uniformly mixed, antiscale is obtained and takes off
Sulphur agent.
Experimental example 1：
Oilfield produced fluid desulfurization performance contrast test：Using the oil field antiscale desulfurizing agent that above example obtains and oil at present
The widely applied triazines desulfurizing agent in field and organic amine desulfurizer carry out performance comparison.Liquid in this experiment for comparison takes off
Sulphur agent sample is the product by being applied successfully after optimizing extensively and screening in platform, has certain representativeness.Selected mesh
It is Bohai Sea Luda 27-2 oil fields and NB 35-2 oilfield to mark oil field.
Desulphurizing ability detection method refers to ASTM D4810-88 (1999)《It is measured in natural gas using colorimetric detection tube method
Hydrogen sulfide content method standard》.1L oil fields production liquid is first imported into closed container, immediately sealing container, be put into concussion case and shake 5
Minute, gas sample is taken to detect concentration of hydrogen sulfide from closed container top, be denoted as blank concentration of hydrogen sulfide C0.A certain amount of desulfurizing agent is added
Note is in closed container, then imports 1L oil fields production liquid, and sealing container, is put into concussion case and shakes 5 minutes, from closed container immediately
Top takes gas sample to detect concentration of hydrogen sulfide, is denoted as concentration of hydrogen sulfide C.
With the desulfurization performance quality of desulfurization degree assessment desulfurizing agent, desulfurization degree is higher, and desulfurization performance is better.Desulfurization degree refers to water sample
It adds in before and after desulfurizing agent, measures the percentage of hydrogen sulfide content reduction.Desulfurization degree is calculated as follows：
In formula：
X --- desulfurization degree；
Co --- hydrogen sulfide content, ppm are not measured plus before desulfurizing agent；
C --- measure hydrogen sulfide content, ppm after adding in desulfurizing agent.
Test platform：Bohai Sea Luda 27-2 oil fields
Experimental raw：Produce liquid in oil field
Evaluation method：Live desulfurization test experience
Drug concentration：120mg/L
Test result is as follows shown in table 1：
The live garbled data table of table 1
| Medicament title | Hydrogen sulfide content (ppm) | Desulfurization degree (%) |
| Blank | 200 | — |
| With triazines desulfurizing agent | 30 | 85 |
| Common organic amine desulfurizer | 45 | 77.5 |
| Embodiment 1 | 20 | 90 |
| Embodiment 2 | 15 | 92.5 |
| Embodiment 3 | 25 | 87.5 |
| Embodiment 4 | 18 | 91 |
| Embodiment 5 | 10 | 95 |
| Embodiment 6 | 20 | 90 |
Test platform：Bohai Sea NB 35-2 oilfield
Experimental raw：Produce liquid in oil field
Evaluation method：Live desulfurization test experience
Drug concentration：1000mg/L
Test result is as follows shown in table 2：
The live garbled data table of table 2
| Medicament title | Hydrogen sulfide content (ppm) | Desulfurization degree (%) |
| Blank | 1500 | — |
| With triazine desulfurizing agent | 60 | 96 |
| Common organic amine desulfurizer | 90 | 94 |
| Embodiment 1 | 40 | 97.3 |
| Embodiment 2 | 32 | 97.9 |
| Embodiment 3 | 45 | 97 |
| Embodiment 4 | 35 | 97.7 |
| Embodiment 5 | 30 | 98 |
| Embodiment 6 | 40 | 97.3 |
Experimental example 2：
For Bohai Sea LD27-2 Oil Field water quality, the detection of medicament anti-scaling property is carried out.Detection method refers to SY/
T5673-1993 scale inhibitor for oilfield Reliable Evaluating Methods of Their Performance.According to experiment condition, corresponding 100ml test(ing) mediums is taken to add in tool plug
In colorimetric cylinder, desulfurizing agent fills a concentration of 200mg/L, is heated to 55 DEG C of test temperature, constant temperature 48 hours.It treats that temperature cools down, sees
Medium fouling condition in colorimetric cylinder is examined, if there is fouling, is filtered after medium is shaken up, carries out titration experiments, titration experiments reference
GB7476-87《The measure EDTA titrations of water quality calcium content》.
Scale preventative performance is characterized with antiscaling rate, and percent value is bigger, and anti-scaling property is better.Antiscaling rate E is calculated as follows：
In formula：
M2--- calcium ion concentration in liquid is produced after adding medicine；
M1--- calcium ion concentration in liquid is produced after non-adding medicine；
M0--- initial calcium ion concentration in production liquid.
Test result is as follows shown in table 3：
3 anti-scaling property evaluation experimental result of table
The present invention is can be seen that for hydrogen sulfide in oilfield produced fluid from above-mentioned detection data, it is extensive compared to current oil field
The triazines desulfurizing agent and organic amine desulfurizer of application have more efficient desulfurization effect.There is good antiscale energy simultaneously
Power.With certain application value.
Claims (4)
1. a kind of oil field antiscale desulfurizing agent, which is characterized in that the oil field antiscale desulfurizing agent by host agent addition modifying agent, synergist,
Dispersant is prepared；Wherein, the mass fraction of the host agent is 60-80%, and the modifying agent uses mass fraction as 5-
10% phosphoric acid solution, the mass fraction of the synergist is 5-10%, remaining is the dispersant；The host agent is with organic
Amine and formalin are refined for polymerizable raw material dehydration to be formed, and wherein the molar ratio of organic amine and formaldehyde is (1~2)：1；
The synergist is at least one of piperazine, N methyldiethanol amine, sulfolane；
The dispersant is at least one of methanol, ethyl alcohol, ethylene glycol；
And the oil field antiscale desulfurizing agent is obtained by following preparation method：
(1) first organic amine is added in reaction kettle, stirring is warming up to 65 DEG C, and formaldehyde then is added dropwise under 65-75 DEG C of temperature condition
Solution 1-2h completes 65-75 DEG C of temperature control after being added dropwise and reacts 1-3 hours, finally vacuum degree is -0.09~-0.1MPa, temperature is
Decompression dehydration 5h under the conditions of 70-80 DEG C, you can obtain the host agent；
(2) host agent, 70-80 DEG C of controlling reaction temperature obtained by step (1) are taken, the modifying agent is added dropwise, is reacted 2-3 hours；
(3) synergist and the dispersant are added successively in step (2) products therefrom, and is stirred to being uniformly mixed, i.e.,
Oil field antiscale desulfurizing agent is made.
2. a kind of oil field antiscale desulfurizing agent according to claim 1, which is characterized in that the organic amine for methylamine solution,
At least one of ethanol amine, ethylenediamine, 3 methoxypropyl amine, diethylenetriamine, polyethylene polyamine.
3. a kind of preparation method of antiscale desulfurizing agent in oil field as described in claim 1, which is characterized in that this method is according to following step
It is rapid to carry out：
(1) first organic amine is added in reaction kettle, stirring is warming up to 65 DEG C, and formaldehyde then is added dropwise under 65-75 DEG C of temperature condition
The molar ratio of solution 1-2h, wherein organic amine and formaldehyde are (1~2)：1；65-75 DEG C of temperature control after being added dropwise is completed to react 1-3 hours,
The finally decompression dehydration 5h under the conditions of vacuum degree is -0.09~-0.1MPa, temperature is 70-80 DEG C, you can obtain host agent；
(2) host agent obtained by step (1) is taken, modifying agent is added dropwise in 70-80 DEG C of controlling reaction temperature, reacts 2-3 hours；
(3) synergist and dispersant are added successively in step (2) products therefrom, and is stirred to being uniformly mixed, obtains oil field
Antiscale desulfurizing agent；
Wherein, the mass fraction of the host agent is 60-80%, and the modifying agent uses mass fraction molten for the phosphoric acid of 5-10%
Liquid, the mass fraction of the synergist is 5-10%, remaining is the dispersant.
4. the preparation method of a kind of oil field antiscale desulfurizing agent according to claim 3, which is characterized in that the organic amine is
At least one of methylamine solution, ethanol amine, ethylenediamine, 3 methoxypropyl amine, diethylenetriamine, polyethylene polyamine.
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Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: CNOOC Energy Development Co., Ltd. Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: CNOOC Energy Development Co., Ltd. Patentee before: China National Offshore Oil Corporation |