CN104829781B - A kind of drilling fluid is carried and is cut agent and preparation method thereof by aqueous based tackifier - Google Patents
A kind of drilling fluid is carried and is cut agent and preparation method thereof by aqueous based tackifier Download PDFInfo
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Abstract
The present invention relates to drilling fluid field, disclose a kind of drilling fluid aqueous based tackifier and put forward the preparation method who cuts agent, the method comprises the following steps: (1) under agitation, dissolves anionic monomer, nonionic monomers and cationic monomer and mixes in water; (2) regulate pH value to 5-10 step (1) gained mixed liquor, and continue to stir; (3) in step (2) gained mixture, add oxidant, reducing agent and azo initiator, and under agitation react. Drilling fluid of the present invention is carried and is cut agent and have excellent tackify and carry and cut performance, heat-resisting property and system applicability by aqueous based tackifier, its excellent tackify is carried and is cut performance and be embodied in: can make drilling fluid system obtain higher ratio of dynamic shear force/yield value to plastic viscosity, OPTIMIZATION OF DRILLING FLUID flow pattern well, raising system yield value, strengthens system large rock-carrying ability.
Description
Technical field
The present invention relates to a kind of drilling fluid aqueous based tackifier carries and cuts the preparation method of agent and according to this preparationA kind of drilling fluid aqueous based tackifier that method prepares is carried and is cut agent.
Background technology
Extended reach well has controlled oil-bearing area, the raising rate of oil and gas recovery, reduction oil field on a large scale and opensSend out the advantages such as cost, there are significant economical, societal benefits, so extended reach well has become current exploitationOne of effective means of marginal oil field. In recent years along with the increasing of large inclined shaft extended reach well drilling hole number,Drilling fluid is taken to lithology has higher requirement.
Well cleaning effect is bad can increase drilling well moment of torsion and frictional resistance, therefore extended reach well, large hole deviation,How low discharge capacity, low returning under fast condition, carry out landwaste in well timely and effectively, eliminates cutting bed,Keeping well clean, is the key that can extended reach well smooth construction. Due to the raising to environmental requirement,And low drilling cost and on-the-spot tractable demand, make under the very not complicated prerequisite of geological conditions,Extended reach well drillng operation adopts water-based drilling liquid system as far as possible. Return speed one timing at drilling fluid annular space,Adjusting drilling fluid flow pattern, selecting suitable rheological parameter is the key of hole cleaning. When annular space drilling liquid flowWhen state is laminar flow, must adjust drilling fluid rheology, replace spike type laminar flow with plate laminar flow, fromAnd improve the large rock-carrying ability of drilling fluid. If system ratio of dynamic shear force/yield value to plastic viscosity is too low, can cause spike type laminar flow; As movingMould than too high, tend to significantly raise because the increase of yield value causes pump pressure, thus suitable high ratio of dynamic shear force/yield value to plastic viscosity,Make System forming plate laminar flow be conducive to experience clean. No matter be turbulent flow or laminar flow, improve drilling fluidViscosity can contribute to take rock. Domestic main application xanthans, modified cellulose etc. improve drilling fluid at presentThickening property, becomes the important measures that solve landwaste removing problem. But from entirety consider, by tackify withImprove drilling fluid and take lithology energy, not only in principle, be not enough to agree with mutually with question essence, and in practiceAlso there is the wasting of resources, the low problem of the performance rate of exchange. The tackify that performance is good is carried and is cut agent, can be in maximum limitThe face performance of coordinating all quarters concerned on degree, the balance of coordinating all quarters concerned as much as possible between face performance, and make drilling wellLiquid obtains high ratio of dynamic shear force/yield value to plastic viscosity, and optimization system large rock-carrying ability, greatly reduces drilling failure, improves drilling efficiency.
Summary of the invention
The object of the invention is to overcome existing drilling fluid tackify carry cut agent ratio of dynamic shear force/yield value to plastic viscosity not high enough, application modelEnclose the narrower and/or imperfect shortcoming of temperature resistance stability, provide a kind of drilling fluid aqueous based tackifier to propose to cut agentPreparation method and the drilling fluid aqueous based tackifier preparing according to this preparation method are carried and are cut agent, the present inventionDrilling fluid with aqueous based tackifier carry cut agent have excellent tackify carry cut performance, heat-resisting property and system be suitable forProperty, its excellent tackify is carried and is cut performance and be embodied in: can make drilling fluid system obtain higher moving mouldingRatio, OPTIMIZATION OF DRILLING FLUID flow pattern well, improves system yield value, strengthens system large rock-carrying ability.
The present inventor finds, by especially adding azo to draw in the mixture after regulating pHSend out agent, and regulate the proportioning of each material and control reaction condition, can make preparation-obtained drilling fluidTackify is carried and is cut agent and have excellent above-mentioned performance, and its principle is speculated as: azo initiator can be in certain journeyOn degree, suppress the effect of redox initiation system, make reaction more stable, be conducive to be reactedEvenly, the product of stable performance.
The invention provides a kind of drilling fluid aqueous based tackifier and put forward the preparation method who cuts agent, the method comprise withLower step:
(1) under agitation, that anionic monomer, nonionic monomers and cationic monomer is molten in waterSeparate and mix;
(2) regulate pH value to 5-10 step (1) gained mixed liquor, and continue to stir;
(3) in step (2) gained mixture, add azo initiator, reducing agent and oxidant, andUnder agitation react.
A kind of drilling fluid aqueous based tackifier that the present invention also provides the method according to this invention to prepareCarry and cut agent.
Drilling fluid of the present invention is carried and is cut agent main advantage compared with prior art and be by aqueous based tackifier:
(1) drilling fluid of the present invention is carried and is cut agent and can, under certain tackify degree, make by aqueous based tackifierDrilling fluid system obtains higher ratio of dynamic shear force/yield value to plastic viscosity;
(2) drilling fluid of the present invention is carried and is cut agent and have good compatibility by aqueous based tackifier, can be suitable forIn most of water-based drilling liquid system, and can be applied to preferably saturated salt-water drilling fluid system;
(3) drilling fluid of the present invention is carried and is cut agent and have excellent tackify and carry and cut performance and anti-by aqueous based tackifierWarm nature energy, can resisting temperature can reach more than 150 DEG C.
Other features and advantages of the present invention are described in detail the detailed description of the invention part subsequently.
Detailed description of the invention
Below the specific embodiment of the present invention is elaborated. Should be understood that, retouch in this placeThe detailed description of the invention of stating only, for description and interpretation the present invention, is not limited to the present invention.
The invention provides a kind of drilling fluid aqueous based tackifier and put forward the preparation method who cuts agent, the method comprise withLower step:
(1) under agitation, that anionic monomer, nonionic monomers and cationic monomer is molten in waterSeparate and mix;
(2) regulate pH value to 5-10 step (1) gained mixed liquor, and continue to stir;
(3) in step (2) gained mixture, add oxidant, reducing agent and azo initiator, andUnder agitation react.
In step (1), the present inventor finds, by by anionic monomer, nonionicMonomer and cationic monomer coordinate in certain proportion, can obtain tackify carry cut performance, heat-resisting property andThe better product of system applicability. The test discovery that the present inventor's process is a large amount of, anionic monomer,The amount ratio of nonionic monomers and cationic monomer is: with respect to the water of 7000 weight portions, and described the moonThe consumption of ion monomer is 550-650 weight portion, and the consumption of described nonionic monomers is that 450-550 is heavyAmount part, the consumption of described cationic monomer is 200-300 weight portion; Preferred amount ratio is: relativelyIn the water of 7000 weight portions, the consumption of described anionic monomer is 618-621 weight portion, described non-fromThe consumption of subtype monomer is 506-511 weight portion, and the consumption of described cationic monomer is 238-242 weightPart.
In step (1), there is no particular limitation for the condition of described stirring, can by anionic monomer,Nonionic monomers and cationic monomer fully dissolve and fully mix the condition of for example described stirringCan comprise: mixing speed is 300-450r/min, mixing time is 15-35min; The bar of described stirringPart preferably includes: mixing speed is 350-400r/min, and mixing time is 20-30min. In the present invention,The prerequisite of described mixing speed is that the diameter of paddle or stirrer can reach container bottoms diameter extremelyFew 1/3rd.
In step (1), described anionic monomer is preferably unsaturated acids, described nonionic monomersBe preferably unsaturated amides, described cationic monomer is preferably quaternary ammonium salt and/or beta-unsaturated esters, wherein saidThere is no particular limitation for the kind of unsaturated acids, unsaturated amides, quaternary ammonium salt and beta-unsaturated esters, Ke YiweiThis area is conventional use prepare drilling fluid aqueous based tackifier carry cut agent unsaturated acids, unsaturated amides andThe kind of quaternary ammonium salt and beta-unsaturated esters. Described unsaturated acids can be selected from benzene sulfonic acid, acrylic acid, 2-propyleneOne or more in amide groups-2-methyl propane sulfonic acid, methyl propane sulfonic acid and methylene-succinic acid, preferably choosingOne in benzene sulfonic acid, acrylic acid, 2-acrylamide-2-methyl propane sulfonic and methylene-succinic acid or manyKind, in preferred embodiment, only choose wherein one or both. Described unsaturated amides canTo be selected from NMA, acrylamide, N, N '-methylene diacrylamine, N, N-dimethylOne in acrylamide, dimethylamino-propyl Methacrylamide and N-isopropyl methyl acrylamideOr multiple, be preferably selected from NMA, acrylamide, N, N '-methylene diacrylamine andOne or more in N,N-DMAA, in preferred embodiment, only choose whereinOne or both. Described cationic monomer is preferably quaternary ammonium salt and/or beta-unsaturated esters, wherein said quaternary ammoniumSalt can be selected from diethyl diallyl ammonium chloride, dimethyl diallyl ammonium chloride and trimethyl pi-allylOne or more in ammonium chloride, described beta-unsaturated esters can be selected from dimethylaminoethyl methacrylate and/Or metering system dimethylaminoethyl, in preferred embodiment, only choose quaternary ammonium salt and unsaturatedOne or both in ester.
In step (2), regulate pH value to 5-10 step (1) gained mixed liquor, preferably regulatePH value is to 7-9. There is no particular limitation for described adjusting pH value alkali used, can be conventional alkali,For example alkali-metal hydroxide is as NaOH.
Operating temperature, the speed of stirring and the time of stirring of step (2), all there is no particular limitation,For example, the operating temperature of step (2) can be 25-45 DEG C, and the speed stirring can be250-450r/min, the time of stirring can be 20-60min; Preferably, the operating temperature of step (2)For 30-40 DEG C, and stir speed be 300-400r/min, the time of stirring is 30-50min. DescribedThe control mode of operating temperature is preferably: container is placed in to water-bath and heats, to keep comparatively constant temperatureDegree.
In step (3), in step (2) gained mixture, add oxidant, reducing agent and azoInitator, and stirring reaction. Prior art is carried while cutting agent preparing drilling fluid aqueous based tackifier, conventionally onlyAdd reducing agent and oxidant, and the present inventor finds, if especially add azo initiator,Can improve significantly the performance of obtained product. And a large amount of research of the present inventor's processFind, need to strictly control to the consumption proportion of azo initiator, reducing agent and oxidant abilityMaking obtained product possess better tackify carries and cuts the comprehensive of performance, heat-resisting property and system applicabilityEnergy. Preferably, the weight ratio of the consumption of described azo initiator, reducing agent and oxidant is 1-3:3-5:1-3; More preferably, the weight ratio of the consumption of described azo initiator, reducing agent and oxidant is 1-1.3:3.3-3.5:1.2-1.4; Wherein, the consumption of described azo initiator accounts for anion list described in step (1)The 0.2-1 % by weight of body, nonionic monomers and cationic monomer gross weight, is preferably 0.4-0.6 % by weight.
In step (3), described azo initiator can be conventional azo initiator, is preferably selected fromABVN, azo two Butanimidamide, monohydrochlorides, azo isobutyl cyano group formamide, azo two isobutyl imidazolesOne or more in quinoline hydrochloride and azodiisobutyronitrile, be further preferably selected from ABVN,One or more in azo two Butanimidamide, monohydrochlorides and azodiisobutyronitrile. Described reducing agent is not specialLimit, use the reducing agent of this area routine, for example can be selected from sodium hydrogensulfite, ferrous sulfate,One or more in thiocarbamide and sodium sulfite, are preferably selected from sodium hydrogensulfite, ferrous sulfate, sulfurous acidOne or more in sodium. There is no particular limitation for described oxidant, uses the oxidant of this area routine, for example, can be selected from ammonium persulfate, potassium peroxydisulfate, hydrogen peroxide and TBHPOne or more, be preferably selected from one or more in ammonium persulfate, potassium peroxydisulfate and hydrogen peroxide.
In step (3), the mode that adds of described azo initiator, reducing agent and oxidant does not have spyOther limits, and can add simultaneously, also can add successively. In one of the present invention preferred embodimentIn, under the condition stirring, in step (2) gained mixture, add oxidant, reducing agent successivelyAnd azo initiator, the interval time adding is for can add when observing when front a kind of material roughly dissolvesLower a kind of material.
In step (3), there is no particular limitation for the temperature and time of described reaction, for example described anti-The temperature of answering can be 25-45 DEG C, and the time of reaction can be 2-6h; Preferably, the temperature of described reactionDegree is 30-40 DEG C, and the time of reaction is 3-5h. Also there is no particular limitation for the speed of described stirring, excellentElect comparatively gentle stirring as, the speed for example stirring can be 200-350r/min, is preferably250-300r/min。
In the present invention, described drilling fluid is put forward by aqueous based tackifier the preparation method who cuts agent and is also comprised: by step(3) to be dried and to be milled into particle diameter be 40-80 object powder to products therefrom. Described dry condition does not haveSpecial restriction, preferably, baking temperature is 85-95 DEG C, be 8-16h drying time. Described millThere is no particular limitation for mode, can use the milling of this area routine, can reach the present invention excellentThe particle diameter of choosing. The particle diameter of described powder is 20-100 order, is preferably 40-80 order.
The drilling fluid that the present invention also provides the method according to this invention to prepare is carried and being cut by aqueous based tackifierAgent. Drilling fluid of the present invention is carried and is cut agent and have excellent tackify and carry and cut performance, heat-resisting property by aqueous based tackifierWith system applicability, its excellent tackify is carried and is cut performance and be embodied in: can make drilling fluid system obtainHigher ratio of dynamic shear force/yield value to plastic viscosity, OPTIMIZATION OF DRILLING FLUID flow pattern well, improves system yield value, and enhancing system is taken rock energyPower. Use drilling fluid of the present invention aqueous based tackifier to carry and cut agent, can make the table of common drilling fluid systemMore than sight viscosity (AV) reaches 30mPas, more than ratio of dynamic shear force/yield value to plastic viscosity reaches 1.6Pa/mPas; And canMake more than the apparent viscosity (AV) of saturated cigarette drilling fluid system reaches 25mPas, ratio of dynamic shear force/yield value to plastic viscosity reachesMore than 0.4Pa/mPas. And, 150 DEG C above even up to the temperature of 180 DEG C under aging 16h withAfter, drilling fluid of the present invention is carried and is cut agent and still can show good combination property by aqueous based tackifier.
It is the application side of this area routine that drilling fluid of the present invention is put forward the application mode of cutting agent by aqueous based tackifierFormula, for example, mix rear use with base slurry. Drilling fluid of the present invention is carried the consumption of cutting agent by aqueous based tackifierCan carry the consumption of cutting agent for the tackify used when configuring water-base drilling fluid of this area routine. ExampleAs, in the time that drilling fluid is common drilling fluid system, the weight of starching taking base is as benchmark, and tackify of the present invention is carriedThe consumption of cutting agent can be 0.1-2 % by weight, is preferably 0.3-1 % by weight; When drilling fluid is that saturated salt is boredWhen well liquid system, taking the weight of base slurry as benchmark, it can be 2-10 that tackify of the present invention is carried the consumption of cutting agent% by weight, is preferably 3-7 % by weight.
Below will describe the present invention by embodiment.
Embodiment 1
(1) under normal temperature, water, benzene sulfonic acid, acrylamide, dimethylaminoethyl methacrylate are pressed to qualityMix than 7000:600:500:200, under the mixing speed of 400r/min, stir 25min;
(2) step (1) gained solution is regulated to pH value to 8, and under the water bath condition of 35 DEG C,With the mixing speed continuation stirring 40min of 350r/min; Then
(3) add successively ammonium persulfate, sodium hydrogensulfite and azodiisobutyronitrile by the mass ratio of 2:4:2,And with the mixing speed stirring reaction of 300r/min 4 hours, wherein the weight of azo initiator was step (1)0.5 % by weight of middle solid material gross weight;
(4) step (3) gained mixture is dried to 12 hours at 90 DEG C, is then milled into averageParticle diameter is about 60 object powder, is final products.
Embodiment 2
(1) under normal temperature, water, acrylic acid, acrylamide, dimethyl diallyl ammonium chloride are pressed to qualityMix than 7000:550:550:250, under the mixing speed of 350r/min, stir 20min;
(2) step (1) gained solution is regulated to pH value to 7, and under the water bath condition of 30 DEG C,With the mixing speed continuation stirring 30min of 300r/min; Then
(3) add successively potassium peroxydisulfate, sodium hydrogensulfite and ABVN by the mass ratio of 1:3:1,And with the mixing speed stirring reaction of 250r/min 3 hours, wherein the weight of azo initiator was step (1)0.2 % by weight of middle solid material gross weight;
(4) step (3) gained mixture is dried to 16 hours at 85 DEG C, is then milled into averageParticle diameter is about 80 object powder, is final products.
Embodiment 3
(1) under normal temperature by water, 2-acrylamide-2-methylpro panesulfonic acid, N, N '-methylene two acryloylsAmine, dimethylaminoethyl methacrylate in mass ratio 7000:550:450:300 mix, 400r/min'sUnder mixing speed, stir 30min;
(2) step (1) gained solution is regulated to pH value to 9, and under the water bath condition of 40 DEG C,With the mixing speed continuation stirring 50min of 400r/min; Then
(3) add successively hydrogen peroxide, sodium sulfite and azo two isobutyl imidazoles by the mass ratio of 3:5:3Quinoline hydrochloride, and with the mixing speed stirring reaction of 300r/min 5 hours, the wherein weight of azo initiatorAmount is 1 % by weight of solid material gross weight in step (1);
(4) step (3) gained mixture is dried to 8 hours at 95 DEG C, is then milled into average particleFootpath is about 40 object powder, is final products.
Comparative example 1
Implement according to the disclosed method of the embodiment of patent CN101955758A, obtain drilling fluid tackifyCarry and cut agent.
Comparative example 2
Method with reference to embodiment 1 is carried out, and difference is not add azo to draw in step (3)Send out agent, obtain drilling fluid tackify and carry and cut agent.
Performance evaluation
The drilling fluid of above-described embodiment and comparative example gained is carried and cut agent product according to following evaluation with tackifyMethod is carried out performance evaluation:
1, outward appearance
Under natural daylight condition, visually observe each product appearance, find embodiment and the obtained product of comparative exampleBe white solid powder.
2, tackify is carried and is cut performance
The configuration of 2.1 drilling fluid base slurries
The water-base drilling fluid base slurry that experiment preparation is two types:
(1) water base bentonite drilling fluid base slurry I: water+4 % by weight bentonite (Weifang letter Xiang swelling God in charge of the EarthDepartment, WFM18-NJPRT)+2.5 % by weight Na2CO3
(2) water base saturated salt drilling fluid base slurry II: water+4 % by weight bentonite (Weifang letter Xiang bentoniteCompany, WFM18-NJPRT)+2.5 % by weight Na2CO3+ 36 % by weight NaCl
Above-mentioned weight percentage is taking the weight of water as benchmark.
The compound method of base slurry comprises: under the condition stirring, the each material in formula is added and made successivelyIt mixes.
2.2 thickening properties and ratio of dynamic shear force/yield value to plastic viscosity
The two kinds of bases slurry configuring is respectively got to 6 parts, every part of 400mL, a copy of it is as blank,Other 5 parts of base slurry I are stirred respectively the embodiment that adds 0.5 % by weight (taking base slurry weight as benchmark)1-3 and comparative example 1-2 products obtained therefrom, base slurry II other 5 parts stir respectively add 5 % by weight (withBase slurry weight is benchmark) embodiment 1-3 and comparative example 1-2 products obtained therefrom. By 12 parts of drilling wells that obtainLiquid stirs with the speed of 10000r/min with mixer respectively, by the rule of GB/T16783.1-2006Fix on six fast rotation viscometers, measure respectively drilling fluid ф 600, ф 300, ф 200, ф 100, ф 6,The viscosity of ф 3, then calculates its apparent viscosity (AV), plastic viscosity (PV), yield value (YP)And the gel strength of 10s, 10min (G10 "/10 '), and further calculate ratio of dynamic shear force/yield value to plastic viscosity (J), computational methodsAs follows:
AV＝1/2Φ600
PV＝Φ600-Φ300
YP＝1/2(2Φ300-Φ600)
J＝YP/PV
Test result based on base slurry I and II is respectively in shown in " before aging " hurdle of table 1 and table 2.
3, heat-resisting property
Repeat the test of above-mentioned outward appearance and thickening property, difference is, before detecting data, first willTest substance aging 16h respectively under the high temperature of different temperatures, result " old in table 1 and table 2 respectivelyAfter changing " shown in a hurdle.
Table 1
Table 2
Can find out by comparing embodiment and comparative example, drilling fluid of the present invention is carried and is cut agent by aqueous based tackifierRatio of dynamic shear force/yield value to plastic viscosity be significantly greater than comparative example, carry and cut performance and have a distinct increment compared with comparative example; Drilling fluid of the present inventionCarry and cut agent and after high temperature ageing, still kept higher ratio of dynamic shear force/yield value to plastic viscosity by aqueous based tackifier, have better anti-Warm nature energy.
More than describe the preferred embodiment of the present invention in detail, still, the present invention is not limited to above-mentioned realityExecute the detail in mode, within the scope of technical conceive of the present invention, can be to technical side of the present inventionCase is carried out multiple simple variant, and these simple variant all belong to protection scope of the present invention.
Claims (10)
1. drilling fluid is put forward a preparation method who cuts agent by aqueous based tackifier, and the method comprises the following steps:
(1) under agitation, that anionic monomer, nonionic monomers and cationic monomer is molten in waterSeparate and mix;
(2) regulate pH value to 5-10 step (1) gained mixed liquor, and continue to stir;
(3) in step (2) gained mixture, add oxidant, reducing agent and azo initiator, andUnder agitation react;
Wherein, the weight ratio of the consumption of described azo initiator, reducing agent and oxidant is 1-3:3-5:1-3, the consumption of wherein said azo initiator accounts for anionic monomer, nonionic described in step (1)The 0.2-1 % by weight of monomer and cationic monomer gross weight;
Wherein, in step (1), with respect to the water of 7000 weight portions, the use of described anionic monomerAmount is 550-650 weight portion, and the consumption of described nonionic monomers is 450-550 weight portion, described sunThe consumption of ion monomer is 200-300 weight portion;
Wherein, described anionic monomer is selected from benzene sulfonic acid, 2-acrylamide-2-methyl propane sulfonic, methyl-propOne or more in sulfonic acid and methylene-succinic acid, described nonionic monomers is selected from methylol acryloylAmine, N, N '-methylene diacrylamine, N,N-DMAA, dimethylamino-propyl methyl-propOne or more in alkene acid amides and N-isopropyl methyl acrylamide, described cationic monomer is selected from twoEthyl diallyl ammonium chloride, trimethylallylammonium chloride, metering system dimethylaminoethyl and methylOne or more in acrylic acid dimethylamine ethyl ester;
Wherein, in step (3), described azo initiator is selected from ABVN, azo two fourthsAmidine hydrochloride, azo isobutyl cyano group formamide, azo two isobutyl imidazoline salt hydrochlorate and azodiisobutyronitrilesIn one or more, described reducing agent is selected from sodium hydrogensulfite, ferrous sulfate, thiocarbamide and sodium sulfiteIn one or more, described oxidant is selected from ammonium persulfate, potassium peroxydisulfate, hydrogen peroxide and the tert-butyl groupOne or more in hydrogen peroxide.
2. method according to claim 1, wherein, in step (1), described anion listBody is unsaturated acids, and described nonionic monomers is unsaturated amides, and described cationic monomer is quaternary ammonium saltAnd/or beta-unsaturated esters.
3. method according to claim 1, wherein, in step (2), by step (1)Gained mixed liquor regulates pH value to 7-9.
4. according to the method described in claim 1 or 3, wherein, the operating temperature of step (2) is 25-45DEG C, and stir speed be 250-450r/min, the time of stirring is 20-60min.
5. method according to claim 4, wherein, the operating temperature of step (2) is 30-40DEG C, and stir speed be 300-400r/min, the time of stirring is 30-50min.
6. method according to claim 1, wherein, in step (3), described oxidant,Reducing agent and azo initiator add mode for adding successively.
7. method according to claim 1, wherein, in step (3), the temperature of described reactionDegree is 25-45 DEG C, and the time of reaction is 2-6h, and the speed of stirring is 200-350r/min.
8. method according to claim 7, wherein, in step (3), the temperature of described reactionDegree is 30-40 DEG C, and the time of reaction is 3-5h, and the speed of stirring is 250-300r/min.
9. method according to claim 1, wherein, described method also comprises: by step (3)It is 20-100 object powder that products therefrom is dried and is milled into particle diameter.
10. the drilling fluid aqueous based tackifier that in claim 1-9, the method described in any one preparesCarry and cut agent.
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| CN105754562A (en) * | 2016-03-23 | 2016-07-13 | 中国石油天然气集团公司 | Tackifier and shear strength improving agent for drilling fluid for extended reach wells as well as preparation method and application thereof |
| CN106084125B (en) * | 2016-07-19 | 2018-02-02 | 中国石油大学(北京) | Copolymer suitable for extracting and cutting agent and its preparation method and application and saturated salt-water drilling fluid and its application |
| CN107163184B (en) * | 2017-05-08 | 2020-03-24 | 中国石油集团渤海钻探工程有限公司 | High-temperature-resistant shear-promoting agent for solid-free drilling fluid and preparation method thereof |
| CN108003851B (en) * | 2018-01-12 | 2020-12-04 | 中国海洋石油集团有限公司 | Cutting agent for drilling fluid and preparation method thereof |
| CN111171225B (en) * | 2018-11-12 | 2022-05-13 | 中石化石油工程技术服务有限公司 | Preparation method of tackifying and shear strength improving agent for drilling fluid and drilling fluid |
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| CN101693825A (en) * | 2009-11-05 | 2010-04-14 | 中国石油大学(北京) | Gel-type extracting agent for drilling fluid or well completion fluid and preparation method thereof |
| CN101955758A (en) * | 2010-05-14 | 2011-01-26 | 北京奥凯立科技发展股份有限公司 | Method for preparing high-temperature resistant and salt resistant shear strength-improving agent for drilling fluid |
| CN103146361A (en) * | 2013-02-22 | 2013-06-12 | 中国石油天然气股份有限公司 | Environment-friendly tackifier for oil-based drilling fluid and preparation method thereof |
| CN103113518A (en) * | 2013-02-27 | 2013-05-22 | 中国科学院长春应用化学研究所 | Viscosifier for drilling fluid and preparation method thereof |
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Effective date of registration: 20180108 Address after: 102249 Beijing city Changping District Road No. 18 Patentee after: China University of Petroleum (Beijing) Address before: 102249 Beijing city Changping District Road No. 18, China University of Petroleum (Beijing) Institute of Petroleum Engineering Patentee before: Jiang Guancheng |