CN106497528B - A kind of shale-control agent for drilling fluid and preparation method thereof - Google Patents
A kind of shale-control agent for drilling fluid and preparation method thereof Download PDFInfo
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- CN106497528B CN106497528B CN201610953279.4A CN201610953279A CN106497528B CN 106497528 B CN106497528 B CN 106497528B CN 201610953279 A CN201610953279 A CN 201610953279A CN 106497528 B CN106497528 B CN 106497528B
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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
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/02—Preparation of carboxylic acid amides from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C233/00—Carboxylic acid amides
- C07C233/01—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
- C07C233/16—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms
- C07C233/17—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom
- C07C233/18—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom having the carbon atom of the carboxamide group bound to a hydrogen atom or to a carbon atom of an acyclic saturated carbon skeleton
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C235/00—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms
- C07C235/02—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton
- C07C235/04—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton being acyclic and saturated
- C07C235/08—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton being acyclic and saturated having the nitrogen atom of at least one of the carboxamide groups bound to an acyclic carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms
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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
- C09K8/04—Aqueous well-drilling compositions
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/22—Synthetic organic compounds
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
Abstract
The present invention relates to a kind of shale-control agent for drilling fluid and preparation method thereof.The shale control agent is the low polymer containing ehter bond, amido and amide groups by polyetheramine and organic acid reaction generation.The shale-control agent for drilling fluid that the present invention is prepared can effectively inhibit clay, mud shale and landwaste aquation, strong with surface of clay effect, be not easy desorption, can play long-acting inhibiting effect.Preparation method of the present invention is simple, and controllability is strong, reproducible, convenient for industrialized production.
Description
Technical field
The present invention relates to a kind of shale-control agent for drilling fluid and preparation method thereof, belong to petroleum drilling fluid technical field.
Background technology
During oil gas drilling, when boring chance mud shale stratum, the hydration swelling of mud shale, dispersion will cause the borehole wall to lose
Surely, bit balling and a series of problems, such as difficult hole cleaning.In order to realize safe, high-quality, quick, environmentally friendly modern drilling skill
Art requirement, domestic and international researcher are seeking to develop rejection excellent inorganic agent and drilling fluid system always.Past several
A variety of anti-collapse inhibitors are had developed in 10 years, as inorganic salts, formates, pitch class, positive colloid, Derived from D-Glucose species,
Polymeric alcohol, silicate and quaternary ammonium salt cationic etc..A variety of different drilling fluid systems are developed based on these inhibitor simultaneously
Successful application is achieved in a certain range, but all there are different limitations.In drillng operation it is most common it is inorganic sun from
Sub- potassium ion inhibition is apparent, but its dosage is larger, and the rheological characteristic and leak-off on drilling fluid influence notable while highly concentrated
It spends potassium ion and there is adverse effect to biotic environment；Formiate is unfavorable for being widely used since cost is too high；Pitch class inhibits
Agent caving-preventing ability is excellent, but there are fluorescence phenomenons, are unfavorable for the test jobs such as well logging, and be unfavorable for environmental protection；Conventional polyol
With the variation of polymerization alcoholic product effective content greatly, inhibition is weak, and there is thickening, bubble problem；Silicate inhibition protrudes, but
It is added in drilling fluid, and drilling fluid rheology is difficult to control；Cationic drilling fluid can realize the rejection of oil base drilling fluid, so
And its toxicity is larger and compatibility is poor.Therefore, a kind of excellent rejection, safety and environmental protection and to drilling fluid system are developed
It is imperative to influence little shale control agent.
105670575 A of Chinese patent literature CN disclose a kind of shale control agent, include the original of following mass percent
Material is formulated：15~35% polydimethyl diallyl ammonium chloride, 10~25% polyetheramine, 10~25% oxalic acid,
15~35% choline chloride and 15~40% water.Using polyetheramine, oxalic acid, polydimethyl diallyl ammonium chloride and chlorination
The polyamine class shale control agent that acetylcholine response obtains, effectively can inhibit shale hydration to expand, and with low toxicity, low ammonia
Taste, thermal stability it is high and with other inorganic agent compatibilities it is good the characteristics of；But raw materials used more, complex steps, cost are higher.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of shale-control agent for drilling fluid and preparation method thereof.The page
Rock inhibitor is few with dosage, and rejection is excellent, and the advantages of environmental protection, easily biological-degradable.
Technical scheme is as follows：
A kind of shale-control agent for drilling fluid is to contain ehter bond, amido and acyl by what polyetheramine and organic acid reaction generated
The low polymer of amido.
According to currently preferred, the polyetheramine is polyether monoamine, polyether diamine or polyether polyamine.
Preferably, the structural formula of the polyether monoamine is as follows：
Wherein R is the alkyl that carbon atom number is 1~19；It is further preferred that the alkyl that it is 1~6 that R, which is carbon atom number,；a、b
For integer, 1≤a+b≤22；It is further preferred that 2≤a+b≤16.
Preferably, the structural formula of the polyether diamine is as follows：
Wherein c, d, e is integer, 1≤c+d+e≤21, it is further preferred that 3≤c+d+e≤16.
Preferably, the structural formula of the polyether diamine is as follows：
Wherein f, g, h be integer, 1≤f≤10,1≤g≤20,0≤h≤10；It is further preferred that 2≤f≤4,1≤g
≤ 6,0≤h≤4.
Preferably, the structural formula of the polyether polyamine is as follows：
Wherein, R ' is methyl, ethyl or propyl；N, x, y and z are integer, 0≤n≤15, x >=1, y >=1, z >=1,3≤
x+y+z≤15；It is further preferred that 0≤n≤10,3≤x+y+z≤10.
According to currently preferred, molecular weight≤1000 of the polyetheramine.
According to currently preferred, the organic acid is monocarboxylic acid, dicarboxylic acids or polybasic carboxylic acid.
Preferably, the monocarboxylic acid is one or more of formic acid, acetic acid, propionic acid, butyric acid, valeric acid or caproic acid
Mixture.
Preferably, the dicarboxylic acids is ethanedioic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, Malaysia
The mixture of one or more of acid, fumaric acid, tartaric acid or malic acid.
Preferably, the polybasic carboxylic acid is citric acid, tricarballylic acid, the acid of propylene three or 1, in 2,3,4- butane tetracarboxylic acid
One or more kinds of mixtures.
According to currently preferred, the shale-control agent for drilling fluid is faint yellow viscous liquid or pale yellow colored solid
Body, relative molecular weight are less than 10000.
A kind of preparation method of shale-control agent for drilling fluid is as follows including step：
Under inert gas shielding, polyetheramine and organic acid are stirred to react 1~10h to get shale control agent.
According to currently preferred, the molar ratio of the polyetheramine and organic acid is 1:0.1~1:6；It is further preferred that
The molar ratio of the polyetheramine and organic acid is 1:0.1~1:3.
According to currently preferred, the reaction temperature is 120~160 DEG C；Preferably, the reaction temperature for 130~
150℃。
According to currently preferred, the reaction time is 2~8h.
According to currently preferred, the stir speed (S.S.) is 100~1000r/min；Preferably, the stir speed (S.S.) is
150~1000r/min.
According to currently preferred, the inert gas is nitrogen, argon gas or helium.
According to the present invention, the polyetheramine can be bought by market.
Shale-control agent for drilling fluid prepared by the present invention inhibits the main function mechanism of Shale Hydration expansion and dispersion
Have：Contain amido, ehter bond and amide groups in molecule simultaneously.Amido is positively charged after protonating in the solution, can be adsorbed on clay
Grain electronegative surface, compresses clay diffusion electric double layer, weakens clay aquation.Meanwhile the presence of ehter bond and amide groups cause molecule with
The siloxy group of surface of clay easily forms hydrogen bond, further strengthens suction-operated of the molecule in surface of clay, and then strengthen and inhibit
Effect.In addition, inhibitor molecules absorption, after mud shale surface, the hydrophobic part on strand is covered in clay particle table
Face prevents the entrance of hydrone, is also beneficial to the stabilization of mud shale.
Compared with polyetheramine, the inhibitor solution pH value obtained after polyetheramine and organic acid reaction reduces, protonation reaction
Strengthen, ammonium concentration increases in solution, and the suction-operated with mud shale enhances, and shows as inhibitory effect and significantly improves.
Beneficial effects of the present invention are as follows：
(1) low polymer shale-control agent for drilling fluid of the invention is compared with current polyether amine inhibitor,
Rejection is more prominent.
(2) low polymer shale-control agent for drilling fluid of the invention and surface of clay effect are strong, are not easy desorption,
Therefore long-acting inhibiting effect can be played.
(3) low polymer shale-control agent for drilling fluid synthesis condition of the invention is simple, and controllability is strong, repeatability
It is good, convenient for industrialized production.
Description of the drawings
Fig. 1 is the infrared spectrogram of shale-control agent for drilling fluid prepared by embodiment 1.
Fig. 2 is the infrared spectrogram of shale-control agent for drilling fluid prepared by embodiment 2.
Fig. 3 is the infrared spectrogram of shale-control agent for drilling fluid prepared by embodiment 3.
Fig. 4 is the infrared spectrogram of shale-control agent for drilling fluid prepared by embodiment 4.
Specific embodiment
With reference to specific embodiment, the present invention is described further, but not limited to this.
Experimental method described in following embodiments simultaneously, is conventional method unless otherwise specified；The reagent and material
Material, unless otherwise specified, commercially obtains.
Embodiment 1
240g is added in the 500mL four round flask for being equipped with thermal, temperature controller, water knockout drum and blender
(0.4mol) polyetheramine M600 (Huntsman companies) and 12g (0.2mol) acetic acid under nitrogen protection, are heated to 150 DEG C,
2h is stirred to react, stir speed (S.S.) is 150r/min to get shale-control agent for drilling fluid.The water vapour generated in reaction process leads to
Nitrogen stream is crossed to take away.Reaction products therefrom can be added to directly as inhibitor in drilling fluid.
Shale-control agent for drilling fluid synthetic route is as follows：
Fig. 1 is the infrared spectrogram of shale-control agent for drilling fluid manufactured in the present embodiment.As seen from Figure 1, due to
There is two peaks, respectively 3270cm in the formation of hydrogen bond, the stretching vibration of N-H-1And 3050cm-1, 2970cm-1、2870cm-1
Respectively NH3Symmetrical stretching vibration absorption peak and asymmetric stretching vibration absorption peak, 1650cm-1It is absorbed for C=O stretching vibrations
Peak, 1550cm-1For C-N-H bending vibrations absorption peak (amide II peaks), 1450cm-1And 1380cm-1For CH3Bending vibration inhale
Receive peak, 1280cm-1For the mixing peak of C-N stretching vibrations and N-H bending vibrations (amide III peaks), 1110cm-1It stretches for C-O-C
Vibration absorption peak, 586cm-1For amide IV peaks.There is amide groups in prepared shale control agent molecule, show amido and carboxyl
It reacts, has obtained target product.
Embodiment 2
176g is added in the 500mL four round flask for being equipped with thermal, temperature controller, water knockout drum and blender
(1mol) polyethyleneoxide diamine EDR176 (Huntsman companies) and 63g (0.5mol) ethanedioic acid, under nitrogen protection, heat temperature raising
To 150 DEG C, 5h is stirred to react, stir speed (S.S.) is 150r/min to get shale-control agent for drilling fluid.It is generated in reaction process
Water vapour is taken away by nitrogen stream.Reaction products therefrom can be added to directly as inhibitor in drilling fluid.
Shale-control agent for drilling fluid synthetic route is as follows：
Fig. 2 is the infrared spectrogram of shale-control agent for drilling fluid manufactured in the present embodiment.As seen from Figure 2,
3290cm-1For N-H stretching vibration absworption peaks, 1650cm-1For C=O stretching vibration absworption peaks (amide I peaks), 1560cm-1For C-
N-H bending vibrations absorption peak (amide II peaks), 1270cm-1To include C-N stretching vibration absworption peaks and N-H bending vibration absorption peaks
Mixing peak (amide III peaks), 1110cm-1For C-O-C stretching vibration absworption peaks.Occur in prepared shale control agent molecule
Amide groups shows that amido reacts with carboxyl, has obtained target product.
Embodiment 3
215g is added in the 500mL four round flask for being equipped with heating unit, temperature controller, water knockout drum and blender
(0.5mol) polypropyleneoxide diamine D-400 (Huntsman companies) and 29.5g (0.25mol) succinic acid, under nitrogen protection, heating
140 DEG C are warming up to, is stirred to react 8h, stir speed (S.S.) is 300r/min to get shale-control agent for drilling fluid.It is produced in reaction process
Raw water vapour is taken away by nitrogen stream.Reaction products therefrom can be added to directly as inhibitor in drilling fluid.
Shale-control agent for drilling fluid synthetic route is as follows：
Fig. 3 is the infrared spectrogram of shale-control agent for drilling fluid manufactured in the present embodiment.As seen from Figure 3,
3280cm-1For N-H stretching vibration absworption peaks, 1700cm-1For C=O stretching vibration absworption peaks (amide I peaks), 1560cm-1For C-
N-H bending vibrations absorption peak (amide II peaks).There is amide groups in prepared shale control agent molecule, show amido and carboxyl
It reacts, has obtained target product.
Embodiment 4
110g is added in the 500mL four round flask for being equipped with thermal, temperature controller, water knockout drum and blender
(0.25mol) polyetheramine T403 (Huntsman companies) and 105g (0.5mol) citric acid under nitrogen protection, are heated to
150 DEG C, 5h is stirred to react, stir speed (S.S.) is 500r/min to get shale-control agent for drilling fluid.The water generated in reaction process
Steam is taken away by nitrogen stream.Reaction products therefrom can be added to directly as inhibitor in drilling fluid.
Shale-control agent for drilling fluid synthetic route is as follows：
Fig. 4 is the infrared spectrogram of shale-control agent for drilling fluid manufactured in the present embodiment.As seen from Figure 4, due to
There is 3370cm in the formation of hydrogen bond, N-H stretching vibrations-1And 3290cm-1Two absorption peaks, 1640cm-1It is inhaled for C=O stretching vibrations
It receives peak (amide I peaks), 1510cm-1For amide II peaks, 1310cm-1For amide III peaks, 1110cm-1It is inhaled for C-O-C stretching vibrations
It receives.There is amide groups in prepared shale control agent molecule, show that amido reacts with carboxyl, obtained target product.
Test example 1
Rejection is evaluated
To evaluate rejection of the synthesized aminated compounds as shale control agent, prepared by embodiment 1,2,3,4
Shale-control agent for drilling fluid with generally acknowledging the polyethers amine inhibitors D-230 haveing excellent performance, the inhibition of M-I companies of foreign countries polyamine at present
Agent Ultrahib, traditional inorganic salt inhibitor KCl and choline chloride inhibitor carry out performance comparison.Inhibition swelling is respectively adopted
It makes slurry experiment with local methods and shale rolls dispersion experiment and carries out experimental evaluation.
1. inhibit the experiment of bentonite pulping
Inhibit bentonite pulping experimental procedure as follows：Various concentration inhibitor, regulation system pH are added in 400mL clear water
≤ 9, while 5wt% bentonites are added in, after high-speed stirred 30min, slurries are poured into aging tank, it is cold at 70 DEG C after heat rolling 16h
But to room temperature, high-speed stirred 5min is using the fast rotational viscometer test slurries rheological characteristics of ZNN-D6 six.Add equivalent bentonite
High-speed stirred 30min repeats above-mentioned experimentation, until slurry viscosity exceeds instrument test range very much greatly.
The different system readings of table 1 with bentonite dosage variation
Note：Show reading no to scale range.
The different system readings of table 2 with bentonite dosage variation
Note：Show reading no to scale range.
From table 1,2 test result of table is it is found that in clear water, with the increase of bentonite dosage, due to the aquation point of clay
It dissipates, system viscosity increases sharply.When bentonite dosage is 15%, system exceeds measurement range because viscosity is too big.Chlorination
Choline and potassium chloride show a degree of rejection ability.And Examples 1 to 4 then shows excellent rejection,
Apparent viscosity and yield value change slowly with the increase of bentonite dosage.When bentonite dosage reaches 35%, added with
The system viscosity of embodiment 2 and embodiment 3 still very little, shows excellent rejection.Show to add in prepared by the present invention
After shale-control agent for drilling fluid, the hydration swelling of clay can be effectively suppressed.
2. shale rolls dispersion experiment
It is as follows that shale rolls dispersion experiment step：The landwaste of 6~10 mesh of 50.0g is quantitatively weighed, it is dense to be packed into 350mL differences
Spend inhibitor pint pot in, 77 DEG C heat rolling 16h after, landwaste is cleaned with normal saline solution, with 40 mesh standard sieves sieve, tail in
4h is dried at 105 DEG C, is weighed, and the landwaste rate of recovery is denoted as with the ratio of initial landwaste quality.
The different inhibitor landwaste rate of recovery of table 3
| Sample | The rate of recovery/% |
| Clear water | 14.18 |
| 7wt%KCl | 44.50 |
| 3wt%D-230 | 56.61 |
| 3wt%Ultrahib | 61.88 |
| Inhibitor prepared by 3wt% embodiments 1 | 65.34 |
| Inhibitor prepared by 3wt% embodiments 2 | 62.58 |
| Inhibitor prepared by 3wt% embodiments 3 | 63.32 |
| Inhibitor prepared by 3wt% embodiments 4 | 64.28 |
It is significantly improved from 3 test result of table it is found that adding in the landwaste rate of recovery after inhibitor prepared by the present invention.Wherein implement
1~4 gained landwaste rate of recovery of example is significantly higher than the rate of recovery of polyetheramine D-230, and slightly above the polyamine of M-I mud company inhibits
The rate of recovery of agent Ultrahib, and the significantly larger than landwaste rate of recovery of 7%KCl inhibitor, show the drilling well prepared by the present invention
Liquid shale control agent can effectively inhibit landwaste aquation to disperse.
Claims (8)
1. a kind of shale-control agent for drilling fluid is to contain ehter bond, amido and amide by what polyetheramine and organic acid reaction generated
The low polymer of base；The shale-control agent for drilling fluid is faint yellow viscous liquid or faint yellow solid, is divided relatively
Son amount is less than 10000；
The polyetheramine is polyether monoamine, polyether diamine or polyether polyamine；Molecular weight≤1000 of the polyetheramine；
The structural formula of the polyether monoamine is as follows：
Wherein R is the alkyl that carbon atom number is 1~19；A, b be integer, 1≤a+b≤22；
The structural formula of the polyether diamine is as follows：
Wherein c, d, e, f, g, h is integer, 1≤c+d+e≤21,1≤f≤10,1≤g≤20,0≤h≤10；
The structural formula of the polyether polyamine is as follows：
Wherein, R ' is methyl, ethyl or propyl；N, x, y and z are integer, 0≤n≤15, x >=1, y >=1, z >=1,3≤x+y+
z≤15；
The organic acid is monocarboxylic acid, dicarboxylic acids or polybasic carboxylic acid；
Mixture of the monocarboxylic acid for one or more of formic acid, acetic acid, propionic acid, butyric acid, valeric acid or caproic acid；Institute
State dicarboxylic acids for ethanedioic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, maleic acid, fumaric acid, tartaric acid or
The mixture of one or more of malic acid；The polybasic carboxylic acid is citric acid, tricarballylic acid, the acid of propylene three or 1,
The mixture of one or more of 2,3,4- butane tetracarboxylic acid.
2. shale-control agent for drilling fluid according to claim 1, which is characterized in that the structural formula of the polyether monoamine is such as
Under：
Wherein R is the alkyl that carbon atom number is 1~6；A, b be integer, 2≤a+b≤16；
The structural formula of the polyether diamine is：
Wherein c, d, e, f, g, h is integer, 3≤c+d+e≤16,2≤f≤4,1≤g≤6,0≤h≤4；
The structural formula of the polyether polyamine is as follows：
Wherein, R ' is methyl, ethyl or propyl；N, x, y and z are integer, 0≤n≤10, x >=1, y >=1, z >=1,3≤x+y+
z≤10。
It is 3. as follows including step such as the preparation method of claims 1 or 2 any one of them shale-control agent for drilling fluid：
Under inert gas shielding, polyetheramine and organic acid are stirred to react 1~10h to get shale control agent.
4. the preparation method of shale-control agent for drilling fluid according to claim 3, which is characterized in that the polyetheramine with
The molar ratio of organic acid is 1:0.1~1:6.
5. the preparation method of shale-control agent for drilling fluid according to claim 4, which is characterized in that the polyetheramine with
The molar ratio of organic acid is 1:0.1~1:3.
6. the preparation method of shale-control agent for drilling fluid according to claim 3, which is characterized in that the reaction temperature
It is 120~160 DEG C.
7. the preparation method of shale-control agent for drilling fluid according to claim 6, which is characterized in that the reaction temperature
It is 130~150 DEG C.
8. the preparation method of shale-control agent for drilling fluid according to claim 3, which is characterized in that the reaction time
For 2~8h.
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| CN108728059B (en) * | 2017-04-24 | 2021-01-08 | 中国石油化工股份有限公司 | Drilling fluid composition and preparation method thereof |
| CN111320972B (en) * | 2018-12-13 | 2022-11-18 | 中石化石油工程技术服务有限公司 | Amido chitosan, preparation method thereof and drilling fluid |
| CN111410940B (en) * | 2019-01-08 | 2022-05-03 | 中国石油化工股份有限公司 | Additive for drilling fluid, preparation method and application of additive for drilling fluid |
| CN112858576A (en) * | 2019-11-28 | 2021-05-28 | 中国石油天然气股份有限公司 | Judgment method for strong and weak shale gas drilling fluid inhibition |
| CN112980403B (en) * | 2019-12-13 | 2022-07-05 | 中国石油化工股份有限公司 | Hyperbranched organic silicon inhibitor for drilling fluid and preparation method thereof |
| CN111718698B (en) * | 2020-07-22 | 2022-04-19 | 西南石油大学 | Hyperbranched polyetheramine environment-friendly shale inhibitor, preparation method thereof and water-based drilling fluid |
| CN111763504B (en) * | 2020-07-22 | 2022-03-22 | 西南石油大学 | Environment-friendly temperature-resistant ether amine shale inhibitor and water-based drilling fluid prepared from same |
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|---|---|---|---|---|
| WO2006096798A1 (en) * | 2005-03-07 | 2006-09-14 | M-I L.L.C. | Polymer coated bridging solids and weighting agents for use in drilling fluids |
| CN102433110A (en) * | 2011-10-19 | 2012-05-02 | 中国石油大学(华东) | Amine shale stabilizer for drilling fluid |
| CN105670575A (en) * | 2016-01-12 | 2016-06-15 | 潍坊天福化学科技有限公司 | Shale inhibitor and preparation method thereof |
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| CN106497528A (en) | 2017-03-15 |
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