CN107828015A - A kind of preparation method of high-temperature resistance tackifier for drilling fluid - Google Patents
A kind of preparation method of high-temperature resistance tackifier for drilling fluid Download PDFInfo
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- CN107828015A CN107828015A CN201711124308.7A CN201711124308A CN107828015A CN 107828015 A CN107828015 A CN 107828015A CN 201711124308 A CN201711124308 A CN 201711124308A CN 107828015 A CN107828015 A CN 107828015A
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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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
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Abstract
The invention discloses a kind of preparation method of high-temperature resistance tackifier for drilling fluid, with acrylamide, the methyl propane sulfonic acid of 2 acrylamido 2, caprolactam, divinylbenzene is raw material, and thinner is prepared by aqueous solution polymerization, and its is raw materials used to press following weight：28 ~ 36 parts of acrylamides, 20 ~ 28 part of 2 methyl propane sulfonic acid of acrylamido 2,16 ~ 32 parts of caprolactams, 0.6 ~ 1 part of divinylbenzene.The present invention triggers monomer that polymerisation occurs by initiator, a kind of high molecular polymer is obtained, the product thickening property protrudes, and is resistant to 240 DEG C of high temperature, a small amount of product is added in drilling fluid can be effectively increased the viscosity of drilling fluid, while also certain filtration reduction.
Description
Technical field
The present invention relates to oilfield chemical auxiliary preparation field, and in particular to a kind of preparation of high-temperature resistance tackifier for drilling fluid
Method.
Background technology
Tackifier are always the study hotspot of drilling fluid worker as one of core inorganic agent in reservoir protection drilling fluid
One of, it plays very important effect to regulation drilling fluid rheology.From the point of view of the historical development of tackifier, it can be divided into four
Major class：Natural plant tackifier, inorganic tackifier, organic tackifier and synthetic polymer tackifier.Since 21 century,
With the development of petroleum exploration and development, In Oil Field Exploration And Development is to ocean, bad ground, deep-well, middle-deep well and ultradeep well side
To development, higher requirement is proposed to additive for drilling fluid.It was verified that due to the limitation of traditional tackifier performance,
Through more stringent practical application condition requirement can not be met.
Currently used reservoir protection drilling fluid tackifier mainly includes the synthesis using acrylamide copolymer as representative
Polymer and the biopolymer using xanthans as representative, but they are all asked when for high-temperature stratum in the presence of be difficult to overcome
Topic, xanthans is degradable at high temperature, and stability is relatively poor, and degraded easily occurs so as to block oil reservoir, and use cost is higher,
And the amide group facile hydrolysis in polyacrylamide polymer molecule, especially in acid, hydrolyzed under basic conditions reaction speed
Very fast, hydrolysis rate becomes big as temperature raises, and after amide group degree of hydrolysis exceedes to a certain degree, can cause polymer
Solution viscosity loses.In consideration of it, being necessary to improve acrylamide copolymer heat resistance, while difference is introduced into its molecule
The functional group of structure and characteristic, change polymer molecule in or intermolecular interaction, develop a kind of New drilling fluid high temperature resistance
Tackifier, further improve the performance of polymer, be allowed to preferably adapt to bad ground needs.
The content of the invention
It is an object of the invention to provide a kind of preparation method of high-temperature resistance tackifier for drilling fluid, the high temperature resistance tackifier
It is a kind of high molecular polymer, the product thickening property is protruded, and is resistant to 240 DEG C of high temperature, and a small amount of product is added in drilling fluid
The viscosity of drilling fluid, while also certain filtration reduction can be effectively increased.
A kind of preparation method of high-temperature resistance tackifier for drilling fluid, it is characterised in that this method comprises the following steps:
1）28 ~ 36 parts of acrylamides, 20 ~ 28 parts of 2- acrylamide-2-methylpro panesulfonic acids are dissolved in 108 ~ 148 parts of deionizations
In water, its solution is adjusted to neutrality with alkaline reagent, is transferred to reactor, adds 1.8 ~ 2.9 portions of compound viscosity stabilisers, 3 ~
5.5 parts of lauryl sodium sulfate, stir；
2）After reactor is warming up into 40 DEG C, 16 ~ 32 parts of vinyl dissolved with 0.13 ~ 0.19 part of azodiisobutyronitrile are added in oneself
Acid amides and 0.6 ~ 1 part of divinylbenzene, stir, are passed through N2Deoxygenation 1h, 65 DEG C are continuously heating to, react 6 ~ 7h while stirring,
Discharging, obtains jelly, with acetone precipitation, is placed in 50 DEG C of oven for drying, crushes, obtains polymer high temperature resistance tackifier.
Beneficial effect：The present invention provides a kind of preparation method of high-temperature resistance tackifier for drilling fluid, agent production procedure letter
Single, raw material relatively easily obtains, and a kind of compound viscosity stabiliser is added in preparation process, it being capable of telo merization
Speed, molecular weight is controlled, while the oxygen dissolved in polymeric system can be removed, anti-block makes polymer degrade, and network
High volence metal ion is closed, prevents high volence metal ion from crimp polymer.With acrylamide, 2- acrylamido -2- methyl-props
Sulfonic acid, caprolactam and divinylbenzene are the product prepared by primary raw material, and thickening property protrudes, and is resistant to 240 DEG C of height
Temperature, a small amount of product is added in drilling fluid can be effectively increased the viscosity of drilling fluid, while also certain filtration reduction.
Embodiment
Embodiment 1
32 parts of acrylamides, 24 parts of 2- acrylamide-2-methylpro panesulfonic acids are dissolved in 128 parts of deionized waters, with alkalescence
Its solution is adjusted to neutrality by reagent, is transferred to reactor, adds 2.5 portions of compound viscosity stabilisers, 5 parts of lauryl sodium sulfate,
Stir；After reactor is warming up into 40 DEG C, 28 parts of caprolactams dissolved with 0.15 part of azodiisobutyronitrile are added
With 0.8 part of divinylbenzene, stir, be passed through N2Deoxygenation 1h, 65 DEG C are continuously heating to, react 6 ~ 7h while stirring, discharging, obtain
To jelly, with acetone precipitation, 50 DEG C of oven for drying are placed in, crushes, obtains polymer high temperature resistance tackifier.
Above-mentioned compound viscosity stabiliser preparation method is as follows：
After 133 parts of vinylacetates, 62 parts of thiocarbamides, 7 parts of methanol, 2.7 parts of acetaldehyde are mixed reactor is transferred to after magnetic agitation 2h
In, nitrogen displacement will be used by being frothed by nitrogen in reactor；2,2 '-azobis isobutyronitrile is dissolved in methanol, modulation concentration is
0.8g/L initiator solution, initiator solution is frothed by nitrogen after ultrasonication 30min and carry out nitrogen displacement.Will reaction
Device heats up, and when internal temperature reaches 60 DEG C, above-mentioned 30 parts of initiator solution is slowly added into reactor, starts to polymerize, 4h
Cooling container stops polymerization afterwards.Depressurized when temperature reaches 30 DEG C in container and methanol is added into reactor, at the same it is molten from reacting
Unreacted Vinyl Acetate Monomer is removed in liquid, dry, pulverize, adds 6 parts of tetrapropylthiuram disulfides, 20 parts of sulfurous acid
Sodium, 12 parts of EDTA, 90 parts of sodium bentonites carry out kneading reaction, obtain compound viscosity stabiliser.
Embodiment 2
Identical with embodiment 1, difference is：Add 28 parts of acrylamides, 20 parts of 2- acrylamido -2- methyl-prop sulphurs
Acid, 108 parts of deionized waters, 1.8 portions of compound viscosity stabilisers, 3 parts of lauryl sodium sulfate, 0.13 part of azodiisobutyronitrile,
16 parts of caprolactams, 0.6 part of divinylbenzene.
Embodiment 3
Identical with embodiment 1, difference is：Add 28 parts of acrylamides, 20 parts of 2- acrylamido -2- methyl-prop sulphurs
Acid, 108 parts of deionized waters, 2 portions of compound viscosity stabilisers, 3.5 parts of lauryl sodium sulfate, 0.14 part of azodiisobutyronitrile,
20 parts of caprolactams, 0.6 part of divinylbenzene.
Embodiment 4
Identical with embodiment 1, difference is：Add 28 parts of acrylamides, 20 parts of 2- acrylamido -2- methyl-prop sulphurs
Acid, 108 parts of deionized waters, 2.2 portions of compound viscosity stabilisers, 4 parts of lauryl sodium sulfate, 0.15 part of azodiisobutyronitrile,
24 parts of caprolactams, 0.6 part of divinylbenzene.
Embodiment 5
Identical with embodiment 1, difference is：2.3 portions of compound viscosity stabilisers of addition, 3.5 parts of lauryl sodium sulfate,
0.16 part of azodiisobutyronitrile, 20 parts of caprolactams.
Embodiment 6
Identical with embodiment 1, difference is：2.4 portions of compound viscosity stabilisers of addition, 4 parts of lauryl sodium sulfate,
0.16 part of azodiisobutyronitrile, 24 parts of caprolactams.
Embodiment 7
Identical with embodiment 1, difference is：Add 36 parts of acrylamides, 28 parts of 2- acrylamido -2- methyl-prop sulphurs
Acid, 148 parts of deionized waters, 2.5 portions of compound viscosity stabilisers, 4 parts of lauryl sodium sulfate, 0.17 part of azodiisobutyronitrile,
24 parts of caprolactams, 1 part of divinylbenzene.
Embodiment 8
Identical with embodiment 1, difference is：Add 36 parts of acrylamides, 28 parts of 2- acrylamido -2- methyl-prop sulphurs
Acid, 148 parts of deionized waters, 2.8 portions of compound viscosity stabilisers, 5 parts of lauryl sodium sulfate, 0.18 part of azodiisobutyronitrile,
28 parts of caprolactams, 1 part of divinylbenzene.
Embodiment 9
Identical with embodiment 1, difference is：Add 36 parts of acrylamides, 28 parts of 2- acrylamido -2- methyl-prop sulphurs
Acid, 148 parts of deionized waters, 2.9 portions of compound viscosity stabilisers, 5.5 parts of lauryl sodium sulfate, 0.19 part of isobutyl of azo two
Nitrile, 32 parts of caprolactams, 1 part of divinylbenzene.
Comparative example 1
Identical with embodiment 1, difference is：Simply it is added without compound viscosity stabiliser.
Comparative example 2
Identical with embodiment 1, difference is：The viscosity stabiliser simply added is thiocarbamide.
Comparative example 3
Identical with embodiment 1, difference is：Thiocarbamide is added without when simply preparing compound viscosity stabiliser.
Comparative example 4
Identical with embodiment 1, difference is：90 parts by weight acetic acid ethene are added when simply preparing compound viscosity stabiliser
Ester.
Comparative example 5
Identical with embodiment 1, difference is：PH value is not adjusted when simply preparing high temperature resistance tackifier.
Comparative example 6
Identical with embodiment 1, difference is：2- acrylamide-2-methylpro panesulfonic acids are simply replaced with into dimethyl two
Allyl ammonium chloride.
The high temperature resistance tackifier prepared as follows to the embodiment of the present invention 1 ~ 9 and comparative example 1 ~ 6 carry out performance test：
1st, thickening property is tested
Precise 2.00g dry polymer tackifier powder, is added in 400ml deionized waters under agitation, low
Speed stirring 6h, stands overnight, is completely dissolved it, obtain the polymer deionized water solution of 0.5% mass concentration.With
The ULTRA types viscosimeters of BrookfieldDV- III determine the apparent viscosity of aqueous solutions of polymers, and its temperature-controlled precision is ± 0.1 DEG C, is surveyed
It is 20 DEG C to try temperature, and determination data is shown in Table 1.
The thickening property of table 1 is tested
As shown in Table 1, the viscosity that water after different samples is added in water increased, and apparent viscosity is universal from 1.06mPas
Increase to 202.34 ~ 298.20mPas.Tackifier Efficient Adhesive Promotion is protruded wherein in embodiment 1, and apparent viscosity is increased to
320.90mPas, it is seen that raw material produces huge shadow with the thickening property for comparing tackifier in synthesis tackifier sample
Ring, when raw material proportioning reaches best of breed in embodiment 1, Efficient Adhesive Promotion reaches best.Other comparative example 1 ~ 4 illustrates that this is compound
The addition of type viscosity stabiliser and being had a great influence with comparison tackifier thickening property for formula, the explanation of comparative example 5 ~ 6 prepares thickening
The selection of raw material and synthesis condition has prominent influence to tackifier performance during agent.
2nd, tackifier temperature resistance evaluation result
To be formulated A:4% bentonite+0.2%NaOH+0.1%Na2CO3+ 0.6%SPNH+0.3%LV-Pac+3%SMP+ barites（Bore
Well liquid density p=1.2g/cm3）For blank sample, sample in 0.2% embodiment 1 is added in blank sample and, as test specimens, is existed respectively
Its rheological property, middle pressure fluid loss and HTHP fluid loss, HTHP are surveyed at 200 DEG C, 220 DEG C, 240 DEG C after heat rolling 16h
Fluid loss measurement temperature is its heat rolling temperature.
Table 2 influences for heat rolling temperature on property of drilling fluid
As can be seen from Table 2, the drilling fluid viscosity for adding tackifier has risen with shear force, ratio of dynamic shear force/yield value to plastic viscosity increase, under filter loss
Drop.With the rise of heat rolling temperature, drilling fluid is on a declining curve in viscosity, shear force, ratio of dynamic shear force/yield value to plastic viscosity, at 240 DEG C after heat rolling, bores
The apparent viscosity of well liquid declines by a big margin with ratio of dynamic shear force/yield value to plastic viscosity, but tackifier are not degradable, and drilling fluid still conforms to live drilling well
Demand, illustrate that the tackifier agent temperature resistance is excellent, still there is certain temperature resistance at 240 DEG C.
Claims (8)
1. a kind of preparation method of high-temperature resistance tackifier for drilling fluid, it is characterised in that this method comprises the following steps:
1）28 ~ 36 parts of acrylamides, 20 ~ 28 parts of 2- acrylamide-2-methylpro panesulfonic acids are dissolved in 108 ~ 148 parts of deionizations
In water, its solution is adjusted to neutrality with alkaline reagent, is transferred to reactor, adds 1.8 ~ 2.9 portions of compound viscosity stabilisers, 3 ~
5.5 parts of lauryl sodium sulfate, stir；
2）After reactor is warming up into 40 DEG C, 16 ~ 32 parts of vinyl dissolved with 0.13 ~ 0.19 part of azodiisobutyronitrile are added in oneself
Acid amides and 0.6 ~ 1 part of divinylbenzene, stir, are passed through N2Deoxygenation 1h, 65 DEG C are continuously heating to, react 6 ~ 7h while stirring,
Discharging, obtains jelly, with acetone precipitation, is placed in 50 DEG C of oven for drying, crushes, obtains polymer high temperature resistance tackifier.
A kind of 2. preparation method of high-temperature resistance tackifier for drilling fluid according to claim 1, it is characterised in that step 1）In
Acrylamide, 2- acrylamide-2-methylpro panesulfonic acids and caprolactam mass ratio are 7:5:4~9:7:8.
A kind of 3. preparation method of high-temperature resistance tackifier for drilling fluid according to claim 1, it is characterised in that step 1）In
Alkaline reagent is the one or more in sodium hydroxide, potassium hydroxide.
A kind of 4. preparation method of high-temperature resistance tackifier for drilling fluid according to claim 1, it is characterised in that step 1）In
Reactor is ceramic electric heating reactor.
A kind of 5. preparation method of high-temperature resistance tackifier for drilling fluid according to claim 1, it is characterised in that step 1）Point
Son amount conditioning agent is the one kind prepared with vinylacetate, thiocarbamide, tetrapropylthiuram disulfide, sodium bentonite etc. for raw material
Mixture.
A kind of 6. preparation method of high-temperature resistance tackifier for drilling fluid according to claim 1, it is characterised in that step 2）In
Mixing speed is 300 ~ 400r/min.
A kind of 7. preparation method of high-temperature resistance tackifier for drilling fluid according to claim 1, it is characterised in that step 2）In
Alkaline reagent is the one or more in sodium hydroxide, potassium hydroxide.
8. a kind of preparation method of high-temperature resistance tackifier for drilling fluid according to claim 1, it is characterised in that described compound
Viscosity stabiliser preparation method is as follows：
After 133 parts of vinylacetates, 62 parts of thiocarbamides, 7 parts of methanol, 2.7 parts of acetaldehyde are mixed reactor is transferred to after magnetic agitation 2h
In, nitrogen displacement will be used by being frothed by nitrogen in reactor；2,2 '-azobis isobutyronitrile is dissolved in methanol, modulation concentration is
0.8g/L initiator solution, initiator solution is frothed by nitrogen after ultrasonication 30min and carry out nitrogen displacement, will reacted
Device heats up, and when internal temperature reaches 60 DEG C, above-mentioned 30 parts of initiator solution is slowly added into reactor, starts to polymerize, 4h
Cooling container stops polymerization afterwards, is depressurized when temperature reaches 30 DEG C in container and methanol is added into reactor, while molten from reacting
Unreacted Vinyl Acetate Monomer is removed in liquid, dry, pulverize, adds 6 parts of tetrapropylthiuram disulfides, 20 parts of sulfurous acid
Sodium, 12 parts of EDTA, 90 parts of sodium bentonites carry out kneading reaction, obtain compound viscosity stabiliser.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108715624A (en) * | 2018-05-25 | 2018-10-30 | 成都理工大学 | The amphoteric ion hydrophobic associated polymer fluid loss additive and preparation method thereof of the anti-anti- complex salt of superhigh temperature |
| CN112266779A (en) * | 2020-10-21 | 2021-01-26 | 西安凯尔文石化助剂制造有限公司 | High-temperature-resistant instant thickening agent for fracturing fluid and preparation method thereof |
| CN114085319A (en) * | 2020-08-24 | 2022-02-25 | 中石化石油工程技术服务有限公司 | High-temperature-resistant polymer flow pattern regulator for drilling fluid and preparation method thereof |
| CN114540106A (en) * | 2022-03-02 | 2022-05-27 | 北京市政建设集团有限责任公司 | Sealing grease for main bearing of shield tunneling machine and preparation method thereof |
| CN114574267A (en) * | 2022-03-29 | 2022-06-03 | 北京市政建设集团有限责任公司 | Shield tail sealing grease for shield tunneling machine and preparation method thereof |
| WO2023221303A1 (en) * | 2022-05-19 | 2023-11-23 | 中海油田服务股份有限公司 | Flow pattern regulator for water-based drilling fluid, and preparation method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114085319A (en) * | 2020-08-24 | 2022-02-25 | 中石化石油工程技术服务有限公司 | High-temperature-resistant polymer flow pattern regulator for drilling fluid and preparation method thereof |
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| CN114574267A (en) * | 2022-03-29 | 2022-06-03 | 北京市政建设集团有限责任公司 | Shield tail sealing grease for shield tunneling machine and preparation method thereof |
| WO2023221303A1 (en) * | 2022-05-19 | 2023-11-23 | 中海油田服务股份有限公司 | Flow pattern regulator for water-based drilling fluid, and preparation method therefor |
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