CN105315973A - Modified fatty acid type primary emulsion for high-temperature-resistant oil based drilling fluid and preparation method of modified fatty acid type primary emulsion - Google Patents
Modified fatty acid type primary emulsion for high-temperature-resistant oil based drilling fluid and preparation method of modified fatty acid type primary emulsion Download PDFInfo
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- CN105315973A CN105315973A CN201510916104.1A CN201510916104A CN105315973A CN 105315973 A CN105315973 A CN 105315973A CN 201510916104 A CN201510916104 A CN 201510916104A CN 105315973 A CN105315973 A CN 105315973A
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- primary emulsion
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
- C09K8/36—Water-in-oil emulsions
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Abstract
The invention discloses a modified fatty acid type primary emulsion for high-temperature-resistant oil based drilling fluid and a preparation method of the modified fatty acid type primary emulsion. The modified fatty acid type primary emulsion for the high-temperature-resistant oil based drilling fluid consists of the following components: dicarboxylic anhydride, fatty acid and epoxy chloropropane, wherein the mass ratio of dicarboxylic anhydride to fatty acid is 1:20-1:30, and the mass of the epoxy chloropropane accounts for 15-25% of the mass of the fatty acid. The modified fatty acid type primary emulsion disclosed by the invention is obtained by modifying the fatty acid, has stronger emulsifying capacity and high temperature resistance, and has an effect of reducing the high-temperature high-pressure filtration losses of the oil based drilling fluid at the same time.
Description
Technical field
The present invention relates to a kind of high temperature resistance oil base drilling fluid modified fat acids primary emulsion and preparation method, be mainly used in oil and gas well drilling industry.
Background technology
Be the tensio-active agent of HLB value between 3 ~ 6 for the primary emulsion in invert mud, its major function reduces oil water interfacial tension, evenly, is stably distributed in oil, forms stable water-in-oil emulsion by water.For invert mud, the performance of primary emulsion to drilling fluid plays vital effect.
At present, domestic common oil base drilling fluid primary emulsion is mainly sorbitan fatty acid ester class and fatty acid, such as, a kind of oil base drilling fluid viscosity building emulsifiers and preparation method thereof disclosed in China Patent Publication No. 104449598A, publication date is 2015-03-25, emulsifying agent comprises following component, each component and weight percent thereof are: polythene derivative 10% ~ 20%, low density polyprene 10% ~ 20%, glycerin fatty acid ester 20% ~ 30%, Sorbitan acid fatty acid ester 30% ~ 50%.
But above-mentioned exist more shortcoming, mainly contains following several respects: sorbitan fatty acid ester class emulsifying agent under the high temperature conditions, particularly very easily decomposes, lost efficacy in this alkaline environment of oil base drilling fluid; Fatty acid emulsifying agent has obvious high-temperature thickening phenomenon, make oil base drilling fluid at high temperature viscosity exceed zone of reasonableness, especially outstanding especially with oleic acid; Sorbitan fatty acid ester class and fatty acid emulsifying agent all can not free oil phases effectively in adsorbed oil base drilling fluid, lack the effect reducing oil base drilling fluid high temperature and high pre ssure filtration.
Summary of the invention
The object of the invention is to the problems referred to above overcoming prior art existence, a kind of high temperature resistance oil base drilling fluid modified fat acids primary emulsion and preparation method are provided.The present invention is that lipid acid obtains after modification, has stronger emulsifying capacity and high-temperature resistance, has the effect of the high temperature and high pre ssure filtration reducing oil base drilling fluid simultaneously.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of high temperature resistance oil base drilling fluid modified fat acids primary emulsion, it is characterized in that, be made up of following component: dibasic acid anhydride, lipid acid and epoxy chloropropane, wherein, the mass ratio of dibasic acid anhydride and lipid acid is 1:20 ~ 1:30, and epoxy chloropropane is 15 ~ 25% of lipid acid quality.
Described dibasic acid anhydride is the one in malonic anhydride, maleic anhydride, Succinic anhydried, Pyroglutaric acid, adipic anhydride.
Described lipid acid is oleic acid and linoleic mixture, and mixing quality is than being 1:1 ~ 1.5:1.
A kind of preparation method of high temperature resistance oil base drilling fluid modified fat acids primary emulsion, it is characterized in that: dibasic acid anhydride, lipid acid and epoxy chloropropane obtain through addition reaction, wherein, the mass ratio of dibasic acid anhydride and lipid acid is 1:20 ~ 1:30, and epoxy chloropropane is 15 ~ 25% of lipid acid quality.
Described preparation method specifically comprises the steps:
A, by dibasic acid anhydride and lipid acid according to mass ratio 1:20 ~ 1:30, in oil bath, being heated to 40 ~ 60 DEG C, passing into nitrogen 7 ~ 15min, under speed is 200 ~ 250r/min, stirring 25 ~ 35min to mixing;
B, add the epoxy chloropropane of lipid acid quality 15 ~ 25%, keep stirring velocity, oil bath temperature is promoted to 185 DEG C ~ 195 DEG C, insulation 7 ~ 9h;
C, stopping heating and stirring, treat that temperature is cooled to room temperature and pours out, namely obtain modified fat acids primary emulsion.
In described step a, by dibasic acid anhydride and lipid acid according in mass ratio 1:20 ~ 1:30 adding apparatus, in oil bath, be heated to 50 DEG C, pass into nitrogen 10min, stirring at low speed 30min is to mixing.
In described step b, in device, add the epoxy chloropropane of lipid acid quality 20%, device adds prolong, and pass into circulating condensing water, keep stirring velocity, oil bath temperature is promoted to 185 DEG C ~ 195 DEG C, insulation 8h.
Employing the invention has the advantages that:
1, the present invention is the high temperature resistance oil base drilling fluid modified fat acids primary emulsion formed by addition reaction between the carbon-carbon double bond in acid anhydrides, epoxy chloropropane and lipid acid, there is strong emulsifying capacity and high-temperature resistance, there is the effect of the high temperature and high pre ssure filtration reducing oil base drilling fluid simultaneously.
2, the modified monomer of high temperature resistance oil base drilling fluid modified fat acids primary emulsion selects ready denier oil acid, and namely this monomer itself has certain emulsifying effect, is easy to get and cheap simultaneously, makes this primary emulsion have larger practical value.
3, use the invert mud of high temperature resistance oil base drilling fluid modified fat acids primary emulsion preparation, have stronger high-temperature resistance, reach as high as 220 DEG C, and aging rear drilling fluid rheology is stablized, high temperature and high pre ssure filtration is low, and emulsion-breaking voltage is high.
4, emulsifying capacity of the present invention is strong, and the emulsion-breaking voltage that emulsion still can be made under low water oil ratio condition to keep higher, is applied in and can occurs in the drilling engineering of water enchroachment (invasion), can avoid the down hole problem caused because of water pollutions.
5, the modified fat acids primary emulsion that the present invention is formed has stronger emulsifying capacity, with auxiliary emulsifier interaction situation under can further improve the stability of oil base drilling fluid emulsifying film.
6, the starting material synthesizing high temperature resistance oil base drilling fluid modified fat acids primary emulsion are universalization chemical product, originate very extensive; Synthesis technique safety, environmental protection, easy to operate, be convenient to industrial production.
Embodiment
embodiment 1
A kind of high temperature resistance oil base drilling fluid modified fat acids primary emulsion, be made up of following component: dibasic acid anhydride, lipid acid and epoxy chloropropane, wherein, the mass ratio of dibasic acid anhydride and lipid acid is 1:20 ~ 1:30, and epoxy chloropropane is 15 ~ 25% of lipid acid quality.
Described dibasic acid anhydride is the one in malonic anhydride, maleic anhydride, Succinic anhydried, Pyroglutaric acid, adipic anhydride.
Described lipid acid is oleic acid and linoleic mixture, and mixing quality is than being 1:1 ~ 1.5:1.
A kind of preparation method of high temperature resistance oil base drilling fluid modified fat acids primary emulsion, comprise: dibasic acid anhydride, lipid acid and epoxy chloropropane obtain through addition reaction, wherein, the mass ratio of dibasic acid anhydride and lipid acid is 1:20 ~ 1:30, and epoxy chloropropane is 15 ~ 25% of lipid acid quality.
Described preparation method specifically comprises the steps:
A, by dibasic acid anhydride and lipid acid according to mass ratio 1:20 ~ 1:30, in oil bath, being heated to 40 ~ 60 DEG C, passing into nitrogen 7 ~ 15min, under speed is 200 ~ 250r/min, stirring 25 ~ 35min to mixing;
B, add the epoxy chloropropane of lipid acid quality 15 ~ 25%, keep stirring velocity, oil bath temperature is promoted to 185 DEG C ~ 195 DEG C, insulation 7 ~ 9h;
C, stopping heating and stirring, treat that temperature is cooled to room temperature and pours out, namely obtain modified fat acids primary emulsion.
In described step a, by dibasic acid anhydride and lipid acid according in mass ratio 1:20 ~ 1:30 adding apparatus, in oil bath, be heated to 50 DEG C, pass into nitrogen 10min, stirring at low speed 30min is to mixing.
In described step b, in device, add the epoxy chloropropane of lipid acid quality 20%, device adds prolong, and pass into circulating condensing water, keep stirring velocity, oil bath temperature is promoted to 185 DEG C ~ 195 DEG C, insulation 8h.
embodiment 2
The invention provides a kind of high temperature resistance oil base drilling fluid modified fat acids primary emulsion, obtained through addition reaction by epoxy chloropropane, lipid acid, dibasic acid anhydride, wherein lipid acid is a kind of mixture, is made up of oleic acid, linolic acid; Dibasic acid anhydride is the one in malonic anhydride, maleic anhydride, Succinic anhydried, Pyroglutaric acid, adipic anhydride.
Present invention also offers a kind of preparation method of high temperature resistance oil base drilling fluid modified fat acids primary emulsion, specific as follows:
1. add in there-necked flask by dibasic acid anhydride and lipid acid according to mass ratio 1:20 ~ 1:30, be heated to 50 DEG C in oil bath, pass into nitrogen 10min, stirring at low speed 30min is to mixing;
2. in there-necked flask, slowly add the epoxy chloropropane of lipid acid quality 20%, there-necked flask adds prolong, and pass into circulating condensing water, keep stirring velocity, oil bath temperature is slowly promoted to 185 DEG C ~ 195 DEG C, insulation 8h;
3. stop heating and stir, treat that temperature is cooled to room temperature and pours out, namely obtain modified fat acids primary emulsion.
Emulsifying property is tested:
Use 3# white oil, 30% calcium chloride solution and the present invention, prepare the emulsion of different water oil ratio, and test creaming of emulsion voltage, result is as follows:
Water oil ratio=X (3# white oil, 30% calcium chloride)+3% the present invention
| Water oil ratio | Emulsion-breaking voltage/V |
| 90:10 | 329 |
| 85:15 | 301 |
| 80:20 | 289 |
| 75:25 | 278 |
Use 3# white oil, 30% calcium chloride solution, organophilic clay and the present invention, prepare the emulsion of different water oil ratio, and test creaming of emulsion voltage, result is as follows:
Water oil ratio=X (3# white oil, 30% calcium chloride)+3% the present invention+1% organophilic clay
| Water oil ratio | Emulsion-breaking voltage/V |
| 90:10 | 510 |
| 85:15 | 492 |
| 80:20 | 466 |
| 75:25 | 421 |
Temperature resistance is tested:
Use 3# white oil, 30% calcium chloride solution, organophilic clay and the present invention, preparation water oil ratio is the emulsion of 85:15, and heat rolls rear test creaming of emulsion voltage at different temperature, and result is as follows:
Water oil ratio=80:20+3% the present invention+1% organophilic clay
| Heat roll temperature/DEG C | Emulsion-breaking voltage/V |
| 120 | 452 |
| 150 | 436 |
| 180 | 419 |
| 220 | 399 |
Filtrate loss controllability is evaluated
Be formulated as follows drilling fluid, and test its fundamental property.
1# water oil ratio=80:20 (3# white oil, 30% calcium chloride)+4%SPAN-80+0.5% oleic acid+3% organophilic clay+4% oxidized bitumen powder+4%500 order Paris white+3%CaO+ barite (increases the weight of to 2.0g/cm
3)
2#1#+2% the present invention
Note: heat rolls temperature 130 DEG C; High temperature and high pre ssure filtration measures temperature 130 DEG C
embodiment 3
The present embodiment and above-described embodiment are substantially identical, and the key distinction is as follows:
A kind of high temperature resistance oil base drilling fluid modified fat acids primary emulsion, be made up of following component: dibasic acid anhydride, lipid acid and epoxy chloropropane, wherein, the mass ratio of dibasic acid anhydride and lipid acid is 1:20, and epoxy chloropropane is 15% of lipid acid quality.
Described lipid acid is oleic acid and linoleic mixture, and mixing quality is than being 1:1.
A kind of preparation method of high temperature resistance oil base drilling fluid modified fat acids primary emulsion, comprise: dibasic acid anhydride, lipid acid and epoxy chloropropane obtain through addition reaction, wherein, the mass ratio of dibasic acid anhydride and lipid acid is 1:20, and epoxy chloropropane is 15% of lipid acid quality.
Described preparation method specifically comprises the steps:
A, by dibasic acid anhydride and lipid acid according to mass ratio 1:20, in oil bath, being heated to 40 DEG C, passing into nitrogen 7min, under speed is 200r/min, stirring 25min to mixing;
B, add the epoxy chloropropane of lipid acid quality 15%, keep stirring velocity, oil bath temperature is promoted to 185 DEG C DEG C, insulation 7h;
C, stopping heating and stirring, treat that temperature is cooled to room temperature and pours out, namely obtain modified fat acids primary emulsion.
embodiment 4
The present embodiment and above-described embodiment are substantially identical, and the key distinction is as follows:
A kind of high temperature resistance oil base drilling fluid modified fat acids primary emulsion, be made up of following component: dibasic acid anhydride, lipid acid and epoxy chloropropane, wherein, the mass ratio of dibasic acid anhydride and lipid acid is 1:30, and epoxy chloropropane is 25% of lipid acid quality.
Described lipid acid is oleic acid and linoleic mixture, and oleic acid and linolic acid mixing quality are than being 1.5:1.
A kind of preparation method of high temperature resistance oil base drilling fluid modified fat acids primary emulsion, comprise: dibasic acid anhydride, lipid acid and epoxy chloropropane obtain through addition reaction, wherein, the mass ratio of dibasic acid anhydride and lipid acid is 1:30, and epoxy chloropropane is 25% of lipid acid quality.
Described preparation method specifically comprises the steps:
A, by dibasic acid anhydride and lipid acid according to mass ratio 1:30, in oil bath, being heated to 60 DEG C, passing into nitrogen 15min, under speed is 250r/min, stirring 35min to mixing;
B, add the epoxy chloropropane of lipid acid quality 25%, keep stirring velocity, oil bath temperature is promoted to 195 DEG C, insulation 9h;
C, stopping heating and stirring, treat that temperature is cooled to room temperature and pours out, namely obtain modified fat acids primary emulsion.
embodiment 5
The present embodiment and above-described embodiment are substantially identical, and the key distinction is as follows:
A kind of high temperature resistance oil base drilling fluid modified fat acids primary emulsion, be made up of following component: dibasic acid anhydride, lipid acid and epoxy chloropropane, wherein, the mass ratio of dibasic acid anhydride and lipid acid is 1:25, and epoxy chloropropane is 20% of lipid acid quality.
Described lipid acid is oleic acid and linoleic mixture, and mixing quality is than being 1.2:1.
A kind of preparation method of high temperature resistance oil base drilling fluid modified fat acids primary emulsion, comprise: dibasic acid anhydride, lipid acid and epoxy chloropropane obtain through addition reaction, wherein, the mass ratio of dibasic acid anhydride and lipid acid is 1:25, and epoxy chloropropane is 20% of lipid acid quality.
Described preparation method specifically comprises the steps:
A, by dibasic acid anhydride and lipid acid according to mass ratio 1:25, in oil bath, being heated to 50 DEG C, passing into nitrogen 10min, under speed is 230r/min, stirring 28min to mixing;
B, add the epoxy chloropropane of lipid acid quality 20%, keep stirring velocity, oil bath temperature is promoted to 190 DEG C, insulation 8h;
C, stopping heating and stirring, treat that temperature is cooled to room temperature and pours out, namely obtain modified fat acids primary emulsion.
Claims (7)
1. a high temperature resistance oil base drilling fluid modified fat acids primary emulsion, it is characterized in that, be made up of following component: dibasic acid anhydride, lipid acid and epoxy chloropropane, wherein, the mass ratio of dibasic acid anhydride and lipid acid is 1:20 ~ 1:30, and epoxy chloropropane is 15 ~ 25% of lipid acid quality.
2. high temperature resistance oil base drilling fluid modified fat acids primary emulsion according to claim 1, is characterized in that: described dibasic acid anhydride is the one in malonic anhydride, maleic anhydride, Succinic anhydried, Pyroglutaric acid, adipic anhydride.
3. high temperature resistance oil base drilling fluid modified fat acids primary emulsion according to claim 1 and 2, is characterized in that: described lipid acid is oleic acid and linoleic mixture, and mixing quality is than being 1:1 ~ 1.5:1.
4. the high temperature resistance oil base drilling fluid preparation method of modified fat acids primary emulsion, it is characterized in that: dibasic acid anhydride, lipid acid and epoxy chloropropane obtain through addition reaction, wherein, the mass ratio of dibasic acid anhydride and lipid acid is 1:20 ~ 1:30, and epoxy chloropropane is 15 ~ 25% of lipid acid quality.
5. the preparation method of high temperature resistance oil base drilling fluid modified fat acids primary emulsion according to claim 4, is characterized in that: described preparation method specifically comprises the steps:
A, by dibasic acid anhydride and lipid acid according to mass ratio 1:20 ~ 1:30, in oil bath, being heated to 40 ~ 60 DEG C, passing into nitrogen 7 ~ 15min, under speed is 200 ~ 250r/min, stirring 25 ~ 35min to mixing;
B, add the epoxy chloropropane of lipid acid quality 15 ~ 25%, keep stirring velocity, oil bath temperature is promoted to 185 DEG C ~ 195 DEG C, insulation 7 ~ 9h;
C, stopping heating and stirring, treat that temperature is cooled to room temperature and pours out, namely obtain modified fat acids primary emulsion.
6. the preparation method of high temperature resistance oil base drilling fluid modified fat acids primary emulsion according to claim 5, it is characterized in that: in described step a, by dibasic acid anhydride and lipid acid according in mass ratio 1:20 ~ 1:30 adding apparatus, 50 DEG C are heated in oil bath, pass into nitrogen 10min, stirring at low speed 30min is to mixing.
7. the preparation method of high temperature resistance oil base drilling fluid modified fat acids primary emulsion according to claim 6, it is characterized in that: in described step b, the epoxy chloropropane of lipid acid quality 20% is added in device, device adds prolong, and pass into circulating condensing water, keep stirring velocity, oil bath temperature is promoted to 185 DEG C ~ 195 DEG C, insulation 8h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108840962A (en) * | 2018-06-11 | 2018-11-20 | 华东理工大学 | A kind of preparation method of maleic anhydride type reactive emulsifier |
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Effective date of registration: 20200923 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: Chenghua District Green Road 610051 Chengdu City, Sichuan province 1 No. 3 Chuanqing drilling Department of Science & Technology Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd. |
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