CN1048798C - Viscosity-reducing paraffin inhibitor for high water-bearing oil well and gathering line and preparing process thereof - Google Patents
Viscosity-reducing paraffin inhibitor for high water-bearing oil well and gathering line and preparing process thereof Download PDFInfo
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- CN1048798C CN1048798C CN97104738A CN97104738A CN1048798C CN 1048798 C CN1048798 C CN 1048798C CN 97104738 A CN97104738 A CN 97104738A CN 97104738 A CN97104738 A CN 97104738A CN 1048798 C CN1048798 C CN 1048798C
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Abstract
The present invention relates to a viscosity reducing paraffin inhibitor and a preparation method thereof for oil collection pipelines and oil wells with high water content. The paraffin inhibitor is a five-unit compounding product prepared from 0.1% to 10% of fatty alcohol sulfate sodium salt, 50% to 98% of fatty alcohol polyethenoxy ether sulfuric acid ester sodium salt or carboxylate, 0.1% to 10% of succinate sodium sulfonate, 1% to 40% of AE type nonionics and 0.1% to 10% of SP type nonionics by weight, wherein the five kinds of materials are mixed and heated to 50 to 100 DEG C, and the materials are stirred for 2 hours at a constant temperature, and discharge is carried out when the temperature is dropped to 30 to 40 DEG C. The paraffin inhibitor has good viscosity reduction and paraffin prevention effects on the high water content oil wells and the oil collection pipelines.
Description
The present invention relates to a kind of oilfield chemistry agent, a kind of viscosity lowering antiwax agent that is used for high-water-cut oil-producing well and gathering line and preparation method thereof.
The paraffin deposit problem is that the oil collection is defeated, a major issue in the storage and transport process.Whole world every year because of economic loss that paraffin deposit caused and the expense that is used for paraffin deposit control up to tens dollars.Produced liquid in oil well rises to from the shaft bottom in oil pipe that temperature constantly descends the process on ground, produces separating out and the deposition of paraffin crystal on sucker rod surface and tube inner wall of paraffin crystal when liquid stream temperature is lower than the wax precipitation point of crude oil.The wax deposition problem of ground gathering line is similar to the wax deposition problem of oil well, all causes owing to liquid stream temperature is lower than the crude oil wax precipitation point.The paraffin that deposits in oil well and the ground gathering line can cause the minimizing even the obstruction of pipeline net sectional area, cause pump efficiency to descend, oilwell produced fluid amount descends, the sucker rod overload fractures, Oil Well Back Pressure raises, also cause problems such as increase of pumping unit power consumption and rate of fault rising thus, even causes the obstruction of ground gathering line.
Prevent that the method for paraffin deposit from mainly being heat energy method and chemical method in the crude oil production at present.The heat energy ratio juris is to improve the temperature of crude oil in oil well and ground gathering line, just belongs to these class methods as the method for mixing hot water in the gathering line of ground.Though these class methods can prevent deposition of wax effectively, energy consumption is higher.The chemistry ratio juris is the deposition that prevents paraffin crystal by the adding of antiwaxing agent.The mechanism of action of antiwaxing agent mainly is brilliant mechanism of modification of wax and paraffin dispersion mechanism.Present employed antiwaxing agent has good using effect to the paraffin deposit that solves in low aqueous well and the gathering line, but then undesirable for the effect that solves the paraffin deposit in high-water-cut oil-producing well and the gathering line.
Deposition paraffin in low aqueous well and the ground gathering line mainly is because the wax partial crystallization in extraction and the defeated process crude oil of collection goes out and be deposited on the tube wall to cause.Show that according to our recent result of study the deposition paraffin in high-water-cut oil-producing well and the ground petroleum pipeline mainly is because moisture film on the mechanical impact wreckage tube wall takes place for oil clot that suspends in the liquid stream and tube wall causes oil clot to be bonded on the tube wall to form.Therefore, the antiwaxing agent of high-water-cut oil-producing well and ground gathering line should be to prevent the main mechanism of action that gathers into of crude oil in the liquid stream.Antiwaxing agent proposed by the invention is exactly the high-water-cut oil-producing well developed according to a kind of like this mechanism and gathering line viscosity lowering antiwax agent and preparation method thereof.
Major technique content of the present invention is, high-water-cut oil-producing well and gathering line viscosity lowering antiwax agent are five yuan of compounds, and its component comprises fatty alcohol sulphuric acid ester sodium salt, AES or aliphatic alcohol polyethenoxy ether carboxylate, succinate sodium sulfonate, AE type non-ionic surfactant agent and SP type non-ionic surfactant agent.
The weight proportion of the said five kinds of materials of the present invention is: fatty alcohol sulphuric acid ester sodium salt 0.1%～10%, AES or aliphatic alcohol polyethenoxy ether carboxylate 50%～98%, succinate sodium sulfonate 0.1%～10%, AE type non-ionic surfactant agent 1%～40%, SP type non-ionic surfactant agent 0.1%～10%;
The optimum weight proportioning is fatty alcohol sulphuric acid ester sodium salt 5%, AES or aliphatic alcohol polyethenoxy ether carboxylate 50%, succinate sodium sulfonate 5%, AE type non-ionic surfactant agent 35%, SP type non-ionic surfactant agent 5%.
The general formula of the fatty alcohol sulphuric acid ester sodium salt among the present invention is:
ROSO
3Na
R is that carbon number is 6～18 straight chain or branched alkyl in the formula, and wherein carbon number is that 12～15 effects are best.
The general formula of AES and aliphatic alcohol polyethenoxy ether carboxylate is respectively among the present invention:
R
1(CH
2CH
2O)
nSO
3Na
R
1(CH
2CH
2O)
n-1COOM
R in the formula
1Be the straight chain or the branched alkyl of carbon number 6～18, R
1Carbon number be that 12～15 effect is best; N=2-9, M can be Na, K or NH
4
The general formula of the succinate sodium sulfonate among the present invention is:
R in the formula
2Positive structure or isomery alkyl for carbon number 4～12;
The general formula of the AE type non-ionic surfactant agent among the present invention is:
A represents the block polymerization ether of propylene oxide ethylene oxide in the formula, and its structural formula is:
Degree of polymerization L=4-9 in the formula, m=10-100, k=10-50.
The general formula of the SP type non-ionic surfactant agent among the present invention is:
Degree of polymerization m in the formula
1=10-40, k
1=200-400, m
2=5-20.
The preparation method of high-water-cut oil-producing well of the present invention and gathering line viscosity lowering antiwax agent is: above-mentioned five kinds of raw materials are heated in 50～100 ℃ of temperature ranges, optimum temperature is 60 ℃, constant temperature stirred 2 hours, when treating that temperature is reduced between 30～40 ℃ discharging the final products antiwaxing agent.
When this high-water-cut oil-producing well and gathering line viscosity lowering antiwax agent commercial Application, its adding quantity is generally 25～200ppm (calculating by total liquid measure), and wherein adding quantity is that the using effect of 50-100ppm is better.
During antiwaxing agent commercial Application of the present invention, using method is, earlier with thinner dilution, optional water of thinner or isopropanol or methyl alcohol or No. 120 industrial napthas.Its consumption is an antiwaxing agent: thinner=1: 2～and between 1: 20.Best thinner ratio in this scope is an antiwaxing agent: thinner (when being water) is 1: 20, antiwaxing agent: thinner (when being isopropanol or methyl alcohol) is 1: 5, and antiwaxing agent: thinner (when being No. 120 industrial napthas) is 1: 10.
Technique effect of the present invention is, this antiwaxing agent has inhibitory action to the crude oil that is dispersed in aqueous phase coalescent, can reduce the agglomerated temperature of oil droplet.This antiwaxing agent has Wetting action to oil well oil conduit internal surface, sucker rod surface and gathering line inwall, to the inhibitory action that deposits of paraffin crystal.In this antiwaxing agent, also be added with an amount of demulsifier composition in addition, in dehydration of crude oil process, need not to add again demulsifier after adopting this antiwaxing agent.
The fatty alcohol sulphuric acid ester sodium salt, AES, aliphatic alcohol polyethenoxy ether carboxylate, succinate sodium sulfonate and AE type non-ionic surfactant agent all are the emulsification of crude oil agent of function admirable, and the stability (the particularly stability under the low temperature) of oil-in-water type crude oil emulsion is had very strong promoting effect.SP type non-ionic surfactant agent is the demulsifier of function admirable, and it is fast and deviate from the clear advantage of water to have a dewatering speed.
Practical application effect of the present invention is that the crude oil with Daqing oil field is medium, the one, measure its reduction effect to the oil droplet agglomerated temperature of oil-in-water type crude oil emulsion; The 2nd, be medium with the Daqing crude oil, measure its inhibiting rate for wax precipitation.All compare as reference contrast sample with AE1910 type crude oil wax-proofing viscosity depressant when action effect is measured, AE1910 is the widely used a kind of antiwaxing agent in domestic each oil field.The used formulation by weight proportioning of the present invention is in the contrast experiment:
Fatty alcohol sulphuric acid ester sodium salt (employing lauryl sodium sulfate) is 5%.
AES is 80%.
Dioctyl sodium sulfosuccinate is 5%.
AE type non-ionic surfactant agent is 5%.
SP type non-ionic surfactant agent is 5%.
Wherein AES is that lauryl alcohol to the mixture of pentadecanol is made AE0-3 through ethoxylation, again through sulfonation and product, active matter content is 70% in the product, the trade names of AE type non-ionic surfactant agent are the paraffin inhibitor and viscosity inhibitor product of AE1910, its degree of polymerization is L=4, m=85, k=27; The trade names of SP type non-ionic surfactant agent are the crude oil demulsifier product of SP169, and its degree of polymerization is m
1=35, k
1=273, m
2=10.
Constant temperature was 2 hours after above-mentioned five kinds of chemical agents were mixed and heated to 50 ℃, took out when being cooled to 30 ℃.Make antiwaxing agent of the present invention.
Comparative trial one:
Under 40 ℃ of conditions of temperature, be that emulsifier preparation (add dose and count 25mg/L by water) moisture content is the oil-in-water emulsion of 80% Daqing crude oil with antiwaxing agent of the present invention and AE1910 respectively, the crude oil emulsion of preparation is poured in the beaker, put into Magnetic Stirrers and lower the temperature, the Magnetic Stirrers speed setting is 1000r/min.Record under similarity condition, the oil droplet agglomerated temperature that with AE1910 is the oil-in-water type crude oil emulsion of emulsifier is 32.4 ℃, is 28.6 ℃ and antiwaxing agent of the present invention is the oil droplet agglomerated temperature of the oil-in-water type crude oil emulsion of emulsifier.
Comparative trial two:
Under 40 ℃ of conditions of temperature, be that emulsifier preparation (add dose and count 100mg/L by water) moisture content is the oil-in-water emulsion of 70% Daqing crude oil with antiwaxing agent of the present invention and AE1910 respectively.With the not dosing emulsion of preparation, add the emulsion of AE1910 and add viscosity lowering antiwax agent emulsion of the present invention and survey the emulsion temperature by 40 ℃ of wax deposition amounts of reducing to 25 ℃ with the viscosimeter method respectively.The inhibiting rate for wax precipitation that records AE1910 is 17.2%, and the inhibiting rate for wax precipitation of antiwaxing agent of the present invention is 61.4%.
By comparative test result as seen, antiwaxing agent of the present invention is better than existing antiwaxing agent to the wax control result of high-water-cut oil-producing well and gathering line.
Embodiment:
Get lauryl sodium sulfate (powder shape) 10g;
Get the AES product 160g that makes through sulfonation again by 12 AE0-3 that make to the pentadecanol mixed alcohol;
Get dioctyl sodium sulfosuccinate 10g;
Get AE type non-ionic surfactant agent, trade names are AE1910 (60% active matter) 10g;
Get SP type non-ionic surfactant agent SP169 (60% active matter) 10g;
Five kinds of compositions are mixed and heated to 80 ℃ of constant temperature stirrings got antiwaxing agent product of the present invention in 2 hours.This product is the thickness light yellow liquid under the normal temperature, is waxy substance at low temperatures.Its wax control result is with above-mentioned comparative trial.
Claims (4)
1, high-water-cut oil-producing well and gathering line viscosity lowering antiwax agent, it is characterized in that this antiwaxing agent is five yuan of compounds, comprise fatty alcohol sulphuric acid ester sodium salt, AES or aliphatic alcohol polyethenoxy ether carboxylate, succinate sodium sulfonate, AE type non-ionic surfactant agent and SP type non-ionic surfactant agent; The weight proportion of its five kinds of materials is a fatty alcohol sulphuric acid ester sodium salt 0.1%～10%, AES or aliphatic alcohol polyethenoxy ether carboxylate 50%～98%, succinate sodium sulfonate 0.1%～10%, AE type non-ionic surfactant agent 0.1%～40%, SP type non-ionic surfactant agent 0.1%～10%;
The general formula of fatty alcohol sulphuric acid ester sodium salt is ROSO
3Na, R is that carbon number is 6～18 straight chain or branched alkyl in the formula, carbon number is that 12～15 effect is best:
The general formula of AES and aliphatic alcohol polyethenoxy ether carboxylate is respectively: R
1(CH
2CH
2O)
nSO
3Na, R
1(CH
2CH
2O)
N-1COOM, R in the formula
1For carbon number is 6～18 straight chain or branched alkyl, R
1Carbon number be that 12～15 effects are best; N=2-9, M can be Na, K or NH
4
The general formula of succinate sodium sulfonate is:
R
2For carbon number 4～12 positive structure or isomery alkyl;
The general formula of AE type non-ionic surfactant agent is:
A represents the block polymerization ether of propylene oxide ethylene oxide in the formula, and its structural formula is:
Degree of polymerization L=4-9 in the formula, m=10-100, the general formula of k=10-50SP type non-ionic surfactant agent is:
Degree of polymerization m in the formula
1=10-40, k
1=200-400, m
2=5-20.
2, high-water-cut oil-producing well according to claim 1 and gathering line viscosity lowering antiwax agent, the optimum weight proportioning that it is characterized in that five kinds of materials of this antiwaxing agent is, fatty alcohol sulphuric acid ester sodium salt 5%, AES or aliphatic alcohol polyethenoxy ether carboxylate 50%, succinate sodium sulfonate 5%, AE type non-ionic surfactant agent 35%, SP type non-ionic surfactant agent 5%.
3, the preparation method of described high-water-cut oil-producing well of claim 1 and gathering line viscosity lowering antiwax agent is, fatty alcohol sulphuric acid ester sodium salt, AES or aliphatic alcohol polyethenoxy ether carboxylate, succinate sodium sulfonate, AE type non-ionic surfactant agent, five kinds of mixing of materials of SP type non-ionic surfactant agent are heated in 50～100 ℃ of temperature ranges, constant temperature stirred 2 hours, and discharging must this viscosity lowering antiwax agent when treating that temperature is reduced to 30～40 ℃.
4,, it is characterized in that five kinds of mixing of materials heating optimum temperatures are 60 ℃ according to the preparation method of described high-water-cut oil-producing well of claim 3 and gathering line viscosity lowering antiwax agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97104738A CN1048798C (en) | 1997-03-28 | 1997-03-28 | Viscosity-reducing paraffin inhibitor for high water-bearing oil well and gathering line and preparing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97104738A CN1048798C (en) | 1997-03-28 | 1997-03-28 | Viscosity-reducing paraffin inhibitor for high water-bearing oil well and gathering line and preparing process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1163920A CN1163920A (en) | 1997-11-05 |
| CN1048798C true CN1048798C (en) | 2000-01-26 |
Family
ID=5167470
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97104738A Expired - Lifetime CN1048798C (en) | 1997-03-28 | 1997-03-28 | Viscosity-reducing paraffin inhibitor for high water-bearing oil well and gathering line and preparing process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105670582A (en) * | 2016-03-09 | 2016-06-15 | 中石化石油工程技术服务有限公司 | Preparation method of high-temperature-resistant great-temperature-difference cement paste for oilfield well cementing |
| CN105694832A (en) * | 2016-03-09 | 2016-06-22 | 中石化石油工程技术服务有限公司 | High-temperature-resistant and large-temperature-difference-resistant cement grout for well cementation in oil field |
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| CN100363456C (en) * | 2004-11-17 | 2008-01-23 | 中国石油化工股份有限公司 | Inspissated oil emulsion viscidity reducer |
| CN100336882C (en) * | 2005-12-14 | 2007-09-12 | 大庆油田有限责任公司 | Wax-cleaning wax-preventing agent for water-driving polymer-driving oil well |
| CN102191028B (en) * | 2010-03-18 | 2013-06-26 | 中国石油化工股份有限公司 | Oil-soluble viscosity breaker composition |
| CN103923630B (en) * | 2014-04-21 | 2016-08-24 | 大庆华营化工有限公司 | A kind of emulsion Wax removing agent |
| CN105090749A (en) * | 2014-09-19 | 2015-11-25 | 兰德伟业科技集团有限公司 | Nanometer anti-wax pour point depressant |
| CN104327815A (en) * | 2014-11-05 | 2015-02-04 | 青岛蓬勃石油技术服务有限公司 | Paraffin inhibitor for petroleum extraction and preparation method thereof |
| CN107365574B (en) * | 2017-06-15 | 2020-04-17 | 中国石油化工股份有限公司 | Viscosity-reducing oil displacement agent for common heavy oil reservoir and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2182345A (en) * | 1985-10-24 | 1987-05-13 | Pfizer | Method for improving production of viscous crude oil |
| US4765926A (en) * | 1986-03-18 | 1988-08-23 | Vista Chemical Company | Surfactant compositions and method therefor |
| CN1111335A (en) * | 1994-03-11 | 1995-11-08 | 阿吉普公司 | Process for moving highly viscous petroleum products |
-
1997
- 1997-03-28 CN CN97104738A patent/CN1048798C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2182345A (en) * | 1985-10-24 | 1987-05-13 | Pfizer | Method for improving production of viscous crude oil |
| US4765926A (en) * | 1986-03-18 | 1988-08-23 | Vista Chemical Company | Surfactant compositions and method therefor |
| CN1111335A (en) * | 1994-03-11 | 1995-11-08 | 阿吉普公司 | Process for moving highly viscous petroleum products |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105670582A (en) * | 2016-03-09 | 2016-06-15 | 中石化石油工程技术服务有限公司 | Preparation method of high-temperature-resistant great-temperature-difference cement paste for oilfield well cementing |
| CN105694832A (en) * | 2016-03-09 | 2016-06-22 | 中石化石油工程技术服务有限公司 | High-temperature-resistant and large-temperature-difference-resistant cement grout for well cementation in oil field |
| CN105694832B (en) * | 2016-03-09 | 2018-07-17 | 中石化石油工程技术服务有限公司 | The cement slurry of the big temperature difference of reinforcing oil well high temperature resistant |
| CN105670582B (en) * | 2016-03-09 | 2018-07-17 | 中石化石油工程技术服务有限公司 | The preparation method of the big temperature difference cement slurry body of reinforcing oil well high temperature resistant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1163920A (en) | 1997-11-05 |
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