CN106520085A - Dendritic polyether clay shale inhibitor and preparation method and application thereof - Google Patents
Dendritic polyether clay shale inhibitor and preparation method and application thereof Download PDFInfo
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- CN106520085A CN106520085A CN201610953281.1A CN201610953281A CN106520085A CN 106520085 A CN106520085 A CN 106520085A CN 201610953281 A CN201610953281 A CN 201610953281A CN 106520085 A CN106520085 A CN 106520085A
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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
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G83/00—Macromolecular compounds not provided for in groups C08G2/00 - C08G81/00
- C08G83/002—Dendritic macromolecules
- C08G83/003—Dendrimers
- C08G83/004—After treatment of dendrimers
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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 invention discloses a dendritic polyether clay shale inhibitor and a preparation method and an application thereof. The inhibitor is the dendritic polyether clay shale inhibitor obtained by reacting an amino-terminated dendritic polymer and alkyleneoxide. The dendritic polyether clay shale inhibitor has excellent shale inhibition performance, can obviously inhibit hydration expansion and dispersion of the clay shale, has good synergistic inhibition with sylvite, and has advantages of outstanding performance, good environment acceptability, and long aging effect.
Description
Technical field
The present invention relates to a kind of drilling fluid shale inhibitor, and in particular to a kind of dendritic polyether shale inhibitor
And preparation method and application, belong to petroleum works field.
Background technology
Wellbore stability always perplexs the worldwide technological puzzle in oil/gas drilling engineering.Data display according to statistics, about
75% stratum for boring chance is mud shale stratum, and 90% borehole well instability problem occurs in mud shale stratum.Shale hydration is
Cause the one of the main reasons of borehole well instability.For a long time, people have carried out numerous studies for shale hydration mechanism, and carry
Gone out corresponding technical cue, developed in succession various types of shale inhibitors, such as inorganic salt, cationic polymer, change
Property Colophonium, amphoteric ion polymer, methyl glucoside, silicate, positive colloid, polymeric alcohol, organic salt, organic amine etc..More than
It is that main inorganic agent constructs different anti-collapse water base drilling fluid systems to state inhibitor, and scene application obtains certain success, but still
There are various limitation.As although potassium chloride inhibition is excellent, concentration is too high, and well logging is surveyed in easily interference, and environment is made
Into impact；There is environmental issue in asphalt product；Silicate has excellent closure rejection, but its rheological characteristic easily receives pH shadows
Ring；Glucose glycoside inorganic agent dosage is big.Therefore, develop new and effective shale inhibitor still very necessary.
Dendritic in 20th century the mid-80 occur, be a class three-dimensional, high-sequential, can be from molecular level
Upper control, design bulk of molecule, shape, the Novel polymer of 26S Proteasome Structure and Function group.Dendritic is main
With following construction featuress：(1) accurate molecular structure, the geometrical symmetry of (2) height, (3) substantial amounts of functional group, (4) point
There is cavity in son, (5) relative molecular mass has controllability, and (6) molecule sheet is as nano-scale.Dendritic is above-mentioned
Construction featuress make it have some special properties and function, so as to show potential using value in different field, at present
The concern of vast researcher is obtained.In drilling fluid field, people also begin to attempt using dendritic suppressing mud page
Rock hydration swelling and dispersion.
It is oily and natural in subsurface mineral that 103917623 A of Chinese patent document CN discloses a kind of hyperbranched poly lysine
Purposes in the exploitation in gas mineral deposit, exploitation and completion and in deep-well, especially in water-based drilling magma, completion fluid or volume increase
In liquid as shale control agent purposes.The inhibitor excellent performance, it is nontoxic, biodegradable, and will not tire out in vivo
Product.
104130758 A of Chinese patent document CN discloses a kind of many amido polymerizations of dendroid for mud rock drilling well
Thing drilling fluid.By many amine based polymers of dendroid, drilling fluid bentonite, soda, polymer coating agent, polyacrylic acid potassium, hydrolysis
Polyacrylonitrile ammonium salt, anti-mud drum lubricant and water composition.The suppression of drilling fluid can be improved using many amido dendritics
Property, drilling fluid can also be increased substantially to clay and drilling cuttings inhibition, clay rock plasticity is reduced, it is to avoid the water suction of clay rock is swollen
Swollen and dispersion, reduces frictional resistance, prevents bit balling, beneficial to raising rate of penetration, it is ensured that downhole safety.
104250380 A of Chinese patent document CN disclose a kind of dendritic and dendritic monomer and
Its preparation method and application.The dendritic monomer can prepare oil field dissaving polymer, institute as comonomer
Obtain dissaving polymer and can serve as drilling fluid inhibition fluid loss additive, flocculant, coating agent, the polymer displacement of reservoir oil of temperature-resistant anti-salt
Agent, fracturing fluid gelatinizer etc., the monomer can be used for preparing the branched water-soluble polymer season emulsion polymerization of other purposes
Internal surfactants.
104250358 A of Chinese patent document CN discloses a kind of hyper branched copolymer and its preparation method and application.Should
The apparent viscosity of 1 mass % aqueous solution of hyper branched copolymer is 20-60mPa.s, in high temperature (180 DEG C) high salt (saturated brine) and
There is under the conditions of high calcium (10% calcium chloride) preferable filtrate reducing characteristic, it is while guarantee drilling fluid good rejection ability, right
The filter loss of drilling fluid has no adverse effects.
104449596 A of Chinese patent document CN discloses a kind of polyether polyol shale control agent and its prepares and answer
With.With polyhydric alcohol as initiator, catalyst, addition polymerization oxirane (EO) and expoxy propane (PO) are made using KOH, with acid after reaction
Neutralization, adsorbent absorption, are filtered with filter, make shale-control agent for drilling fluid polyether polyol；The polyether polyol page
Rock inhibitor has suppression hydration and expansion of clay, stabilizing borehole, improves drilling fluid lubricating performance, prevents various works such as bit balling
With, and low toxicity, easily biological-degradable, meet green technology requirement.
(SPE164162,2013) according to the characteristics of dendritic, thinks Amanullah：Dendritic
Three-dimensional manometer chondritic provides the foundation for the effectively micro-nano hole of closure mud shale and crack；Dendritic surface has
A large amount of functional groups, such as modification cation group, can form multiple spot on mud shale surface and adsorb by force, can effectively suppress shale hydration
And dispersion.Additionally, by encapsulating special micromolecular compound in dendritic internal cavities, or outer surface functional group changes
Sex modification gives the specific function such as dendritic self assembly behavior and environment-responsive, will provide variation for stabilizing borehole
Approach.Thus Amanullah predict, dendritic suppress mud shale surfaces externally and internally aquation, improve membrane efficiency of shale,
Resistance is slow even to eliminate pore pressure transmission, extend and suppress the aspects such as ageing and While-drilling borehole reinforcing to dive with huge application
Power, and possibility is provided for Future Development " intelligence " drilling fluid.
Although having carried out substantial amounts of research as shale-control agent for drilling fluid currently for polyether polyol, typically adopt
All it is linear polyether, its dosage is often larger, and inhibition is still undesirable.Further, since which easily causes drilling fluid to bubble
And adhesion-promoting, drilling fluid rheology and filter loss are had a negative impact.Therefore, for current polyethers shale control agent not
Foot, uses for reference the characteristics of dendritic spherical structure, end group density are high, solution viscosity is low, develops environment-friendly type dendroid
Polyethers shale control agent, to solve the problems, such as strongly active Wellbore Stability.
The content of the invention
For the deficiencies in the prior art, the present invention provide a kind of dendritic polyether shale inhibitor and preparation method thereof with
Using.The dendritic polyether shale inhibitor has dosage few, and inhibition is excellent, the advantages of environmental acceptability.
Technical scheme is as follows：
A kind of dendritic polyether shale inhibitor, the inhibitor are anti-with epoxyalkane by end amido dendritic
The modified product that should be obtained.
According to currently preferred, the end amido dendritic is PPI dendritic (PPI)
Or polyamide-amide dendritic (PAMAM).
Preferably, the algebraically of the PPI dendritic is 0 generation (G0) to 5 generations (G5)；Polyamide-amide tree
The algebraically of dendritic polymer is 0 generation (G0) to 5 generations (G5).
It is further preferred that the algebraically of the PPI dendritic is 0 generation (G0) to 3 generations (G3)；Polyamides
The algebraically of amine-amine dendritic is 0 generation (G0) to 3 generations (G3).
According to currently preferred, the center initiated core of the end amido dendritic is ethylenediamine, propane diamine, fourth
Diamidogen, pentanediamine, hexamethylene diamine or ammonia.
According to currently preferred, the epoxyalkane is oxirane or one or two the group in expoxy propane
Close.
According to currently preferred, the dendritic polyether shale inhibitor is faint yellow viscous liquid or faint yellow
Solid.
A kind of preparation method of dendritic polyether shale inhibitor, including step is as follows：
Under vacuum, amido dendritic and epoxyalkane is held to react in the presence of catalyst, question response
In device, pressure is down to constant, stopped reaction；Jing is aging, cools down, discharge, acid is neutralized, desalination, obtains final product the suppression of dendritic polyether mud shale
Preparation.
According to currently preferred, the catalyst is one or two in sodium hydroxide, potassium hydroxide or Sodium ethylate
Combination above.
According to currently preferred, the end amido dendritic with the mass ratio of catalyst is：100:0.1～
100:1；Preferably, end amido dendritic with the mass ratio of catalyst is：100:0.1～100:0.5；The end amido
Dendritic with the molar concentration rate of epoxyalkane is：1:(the end amido number of 4 × end amido dendritic)～
1:(the end amido number of 20 × end amido dendritic).
According to currently preferred, the reaction temperature is 90～150 DEG C；Preferably, the reaction temperature be 110～
130℃。
According to currently preferred, the acid neutralization is to be neutralized using glacial acetic acid or phosphoric acid.
According to currently preferred, the ageing time is 1h.
It is as follows according to currently preferred, the preparation method of the dendritic polyether shale inhibitor, including step：
End amido dendritic and catalyst are added in reactor, leads to nitrogen purging, evacuation；It is warming up to 60～
80 DEG C, epoxyalkane is added, reacted at a temperature of 90～150 DEG C, pressure is down to constant, stopped reaction in question response device；Jing is old
Change, cool down, discharging, acid is neutralized, desalination obtains final product dendritic polyether shale inhibitor.
Preferably, the addition speed of the epoxyalkane is 1～10g/min.
It is as follows according to currently preferred, the preparation method of the dendritic polyether shale inhibitor, including step：
End amido dendritic and catalyst are added in reactor, leads to nitrogen purging, evacuation；It is warming up to 60～
80 DEG C, expoxy propane is added, reacted at a temperature of 90～150 DEG C；In question response device, pressure is down to constant, is cooled to 60～80
DEG C, oxirane being added, is reacted at a temperature of 90～130 DEG C, in question response device, pressure is down to constant, stopped reaction；Jing is aging,
Cooling, discharging, acid neutralization, desalination obtain final product dendritic polyether shale inhibitor.
Preferably, the molar concentration rate of the expoxy propane and oxirane is 1:1～1:10.
Preferably, the addition speed of the expoxy propane is 1～8g/min, and the addition speed of oxirane is 1～10g/
min。
A kind of application of dendritic polyether shale inhibitor, the dendritic polyether shale inhibitor are coordinated with potassium salt
It is applied in drilling fluid.
According to currently preferred, the potassium salt be potassium chloride, potassium bromide, potassium iodide, potassium sulfate, potassium carbonate, potassium nitrate,
One or more combination in potassium formate, potassium acetate or potassium citrate.
According to currently preferred, in the drilling fluid mass concentration of dendritic polyether shale inhibitor be 0.1～
5wt%, the mass concentration of potassium salt is 0.5～15wt%；Preferably, dendritic polyether shale inhibitor matter in the drilling fluid
Amount concentration is 0.5～3wt%, and the mass concentration of potassium salt is 3～10wt%.
According to the present invention, described end amido dendritic can market buy, also can prepare by prior art,
Can be found in：Chinese patent document 201110073112.6,201010586069.9 and 201210290336.7.
The dendritic polyether shale inhibitor of the present invention suppresses shale hydration expansion and scattered Main Function mechanism
Have：
(1) hold amido dendritic by reacting with epoxyalkane, introduce substantial amounts of hydroxyl, it is a large amount of that surface is contained
Hydroxyl can be adsorbed on surface of clay, squeeze the hydrone of surface of clay absorption；(2) in the presence of having potassium ion, potassium ion pressure
Contracting clay diffusion electric double layer, reduces the aquation repulsion of clay particle, while being easy to dendritic polyether shale inhibitor in clay
Surface forms stable monolayer adsorption, weakens the aquation of clay particle；(3) it is dramatically different with linear polymer, dendroid
The substantial amounts of functional group in polyethers surface makes which more strong with the effect of surface of clay；(4) similar to polymeric alcohol, dendritic polyether mud
Equally there is coordinate repression between potassium ion in shale control agent.Therefore, dendritic polyether of the present invention has prominent
The rejection for going out.
The present invention is had the advantage that compared with prior art：
(1) dendritic polyether shale inhibitor prepared by the present invention can effectively suppress mud shale (particularly active mud page
Rock) hydration swelling and dispersion；
(2) the dendritic polyether shale inhibitor concentration that prepared by the present invention is low；
(3) as dendritic polyether shale inhibitor outer surface prepared by the present invention has substantial amounts of hydroxyl, can pass through
Multipoint adsorption can effectively suppress shale hydration and dispersion, and be difficult desorption on mud shale surface, therefore can play long-acting work
With.
(4) the dendritic polyether shale inhibitor prepared by the present invention can show to project with potassium ion synergism
Rejection.
Description of the drawings
Fig. 1 is the infrared spectrogram of dendritic polyether shale inhibitor prepared by embodiment 1.
Fig. 2 is the infrared spectrogram of dendritic polyether shale inhibitor prepared by embodiment 2.
Specific embodiment
With reference to specific embodiment, the present invention is described further, but not limited to this.
Experimental technique described in following embodiments, if no special instructions, is conventional method simultaneously；The reagent and material
Material, if no special instructions, commercially obtains.
With ethylenediamine as initiated core, acrylic acid methyl ester. and ethylenediamine are reaction raw materials, by Michael additive reaction and acyl
Aminating reaction alternately, obtains the polyamide-amide dendritic (PAMAM-Gn, n are algebraically) of different algebraically, concrete to close
Chinese patent document CN201110073112.6 is referred to into step.
With ethylenediamine as initiated core, acrylonitrile is repetitives, and being alternately repeated carries out N- alkylated reactions and polynitriles
Reduction reaction, obtains the PPI dendritic (PPI-Gn, n are algebraically) of different algebraically, and its synthetic method is referred to
Chinese patent document CN201010586069.9 and 201210290336.7.
Embodiment 1
0.1mol (51.6g) initiator G0PAMAM (ethylenediamine is core) polyamides is added in 250mL high-temperature high-pressure reaction kettles
Amine-amine dendritic and 0.2g potassium hydroxide, lead to nitrogen sparge tube road and reactor 3 times, then by reactor after sealing
Interior evacuation.Reacting by heating kettle, is slowly added to 1.2mol (52.8g) oxirane by measuring tank when temperature rises to 80 DEG C,
All of oxirane is added in 10min.After oxirane is all added, it is warming up to 110 DEG C and maintains temperature stabilization, when
When pressure drops to invariable in kettle, show that reaction terminates.Logical circulating water is used to room temperature, pressure release discharging, product
Acetic acid is neutralized, sucking filtration desalination, dendritic polyether shale inhibitor.
Synthetic route is as follows：
The infrared spectrogram of dendritic polyether shale inhibitor manufactured in the present embodiment is as shown in Figure 1.Can from Fig. 1
Go out, 3380cm-1For O-H stretching vibration absworption peaks, 2920cm-1For C-H stretching vibration absworption peaks, 1650cm-1Shake for C=O is flexible
Dynamic absworption peak (amide I peaks), 1560cm-1For C-N-H bending vibration absworption peaks (amide II peaks), 1100cm-1Shake for C-O is flexible
Dynamic absworption peak, shows that G0PAMAM there occurs reaction with oxirane, has obtained target product.
The dendritic polyether shale inhibitor that the polyamide-amide that different algebraically can be obtained using identical method is modified,
PAMAM-G0-E, PAMAM-G1-E and PAMAM-G2-E are designated as respectively.
Embodiment 2
0.1mol (28.8g) initiator G0PPI (ethylenediamine is core) polypropylene is added in 250mL high-temperature high-pressure reaction kettles
Imines dendritic and 0.1g potassium hydroxide, lead to nitrogen sparge tube road and reactor 3 times, then by reactor after sealing
Evacuation.Reacting by heating kettle, is slowly added to 0.8mol (46.4g) expoxy propane by measuring tank when temperature rises to 70 DEG C,
After all adding in 10min, it is warming up to 130 DEG C and maintains temperature stabilization.When reacting kettle inner pressure no longer changes, lead to recirculated water
60 DEG C or so are cooled to, 0.8mol (35.2g) oxirane is added by measuring tank then, after all adding in 10min, heated up
To 110 DEG C and maintain temperature stabilization.As reaction is carried out, reacting kettle inner pressure decline, when pressure drop to it is invariable when, table
Bright reaction terminates.Logical circulating water is neutralized to room temperature, pressure release discharging, product with acetic acid, and sucking filtration desalination obtains dendroid
Polyethers shale inhibitor.
Synthetic route is as follows：
The infrared spectrogram of dendritic polyether shale inhibitor manufactured in the present embodiment is as shown in Figure 2.Can from Fig. 2
Go out, 3360cm-1For O-H stretching vibration absworption peaks, 2970cm-1For-CH3Stretching vibration absworption peak, 2930cm-1For-CH2It is flexible to shake
Dynamic absworption peak, 1570cm-1For C-N-H bending vibration absworption peaks (amide II peaks), 1470cm-1And 1380cm-1Respectively it is C-
CH3Asymmetric and symmetric curvature vibration absorption peak, 1100cm-1For C-O stretching vibration absworption peaks, show G0PPI and expoxy propane
Reaction be there occurs with oxirane, target product has been obtained.
The dendritic polyether that the PPI that different algebraically can be obtained using identical method is modified, is designated as PPI- respectively
G0-PE, PPI-G1-PE and PPI-G2-PE.
Test example 1
Inhibition is evaluated
The dendritic polyether mud that dispersion experiment is prepared to embodiment 1,2 is rolled using the experiment of bentonite pulping and shale is suppressed
Shale control agent carries out experimental evaluation.
1. the experiment of bentonite pulping is suppressed
The bentonite pulping is suppressed the step of test to be：In 400mL tap waters, add dendroid prepared by the 4g present invention to gather
Ether shale inhibitor, adds 10g drilling fluids with sodium bentonite (Shandong Hua Wei bentonite company limited) after stirring and dissolving,
After 20min is stirred under 10000rpm, serosity is proceeded in aging tank, aging tank is taken out after 70 DEG C of heat rolling 16h, be cooled to room temperature.
The rheological characteristic of serosity is tested after 10000rpm stirring 10min using six fast rotating cylinder viscometers of ZNN-D6.Add 10g drilling fluids use
Sodium bentonite, takes out aging tank after heat rolling 16h at 70 DEG C, is cooled to room temperature, tests serosity after 10000rpm stirring 10min
Rheological characteristic.The above-mentioned experimental procedure of repetition, till slurry viscosity exceeds instrument test range.
In order to investigate the synergism of dendritic polyether shale inhibitor and potassium salt, the mud shale suppression of test dendritic polyether
Suppress the performance of bentonite pulping when preparation is used cooperatively with KCl, the wherein dosage of KCl is 12g.
Table 1 is change of the different system readings with bentonite dosage
Table 2 is change of the different system readings with bentonite dosage
Table 3 is change of the different system readings with bentonite dosage
Table 4 is change of the different system readings with bentonite dosage
Knowable to 3 test result of table 1 and table, after adding the dendritic polyether shale inhibitor that the present invention is prepared,
Compared with blank sample, with the increase of bentonite dosage, 600 turns of readings, 300 turns of readings and 3 turns of reading increases are relatively slow,
Show that the dendritic polyether energy relative efficiency for preparing suppresses hydration and expansion of clay and dispersion.Can from table 2 and 4 test result of table
Know, after the dendritic polyether for preparing of the present invention and KCl compoundings, with the increase of bentonite dosage, 600 turns of readings, 300 turns
Reading and 3 turns of reading increases slowly, and are substantially better than system individually added with KCl.Show the dendroid for preparing
Synergism can effectively be played after polyethers and KCl compoundings, effectively suppressed shale hydration expansion and disperseed.
2. shale rolls dispersion experiment
The step of shale rolls dispersion experiment is as follows：In 350mL tap waters, add the certain mass present invention to prepare
Dendritic polyether shale inhibitor, solution is proceeded to into aging tank after stirring and dissolving, at the same add 50g particle diameters be 2～5mm's
Landwaste (takes from Shengli Oil Field dune shape).Landwaste is cleaned and crossed 40 mesh standard sieves with normal saline solution after 77 DEG C of heat rolling 16h, is tailed over
Weigh after drying 4h at 105 DEG C, the landwaste quality after drying is the landwaste response rate with the ratio of initial mass, with percent table
Show.
In order to investigate the synergism of dendritic polyether and potassium salt, rock when dendritic polyether is used cooperatively with KCl is tested
The bits response rate, the wherein dosage of KCl are 10.5g
The landwaste response rate of 5 different shale control agents of table
| Test sample | The landwaste response rate (%) | Test sample | The landwaste response rate (%) |
| Blank sample | 20.6 | 3%KCl | 43.4 |
| 1%PAMAM-G0-E | 41.6 | 1%PAMAM-G0-E+3%KCl | 56.0 |
| 1%PAMAM-G1-E | 43.0 | 1%PAMAM-G1-E+3%KCl | 58.2 |
| 1%PAMAM-G2-E | 46.4 | 1%PAMAM-G2-E+3%KCl | 65.3 |
Note：Landwaste used is system in Tahe Oilfield well 3170m landwaste.
The landwaste response rate of 6 different shale control agents of table
Note：Landwaste used is system in Tahe Oilfield well 2900m landwaste.
From table 5,6 as can be seen that dendritic polyether shale inhibitor of the present invention can effectively suppress mud shale
Hydration swelling and dispersion, compared with clear water, the landwaste response rate is significantly improved；It is further with the use of the rear landwaste response rate with KCl
Improve, show that the two has significant cooperative effect.
Claims (10)
1. a kind of dendritic polyether shale inhibitor, it is characterised in that the inhibitor be by end amido dendritic with
The modified product that epoxyalkane reaction is obtained.
2. dendritic polyether shale inhibitor according to claim 1, it is characterised in that the end amido dendroid is gathered
Compound is PPI dendritic (PPI) or polyamide-amide dendritic (PAMAM)；
Preferably, the algebraically of the PPI dendritic is 0 generation (G0) to 5 generations (G5)；Polyamide-amide dendroid
The algebraically of polymer is 0 generation (G0) to 5 generations (G5)；
It is further preferred that the algebraically of the PPI dendritic is 0 generation (G0) to 3 generations (G3)；Polyamide-amide
The algebraically of dendritic is 0 generation (G0) to 3 generations (G3).
3. dendritic polyether shale inhibitor according to claim 1, it is characterised in that the epoxyalkane is epoxy
One or two combination in ethane or expoxy propane.
4. dendritic polyether shale inhibitor according to claim 1, it is characterised in that the dendritic polyether mud page
Rock inhibitor is faint yellow viscous liquid or faint yellow solid.
5. a kind of preparation method of dendritic polyether shale inhibitor, including step is as follows：
Under vacuum, amido dendritic and epoxyalkane is held to react in the presence of catalyst, in question response device
Pressure is down to constant, stopped reaction；Jing is aging, cools down, discharge, acid is neutralized, desalination, obtains final product the suppression of dendritic polyether mud shale
Agent.
6. the preparation method of dendritic polyether shale inhibitor according to claim 5, it is characterised in that the catalysis
Agent is one or more the combination in sodium hydroxide, potassium hydroxide or Sodium ethylate；
Preferably, the end amido dendritic with the mass ratio of catalyst is：100:0.1～100:1；Further preferably
, end amido dendritic with the mass ratio of catalyst is：100:0.1～100:0.5；Preferably, the end amido tree
Dendritic polymer with the molar concentration rate of epoxyalkane is：1:(the end amido number of 4 × end amido dendritic)～1:
(the end amido number of 20 × end amido dendritic).
7. the preparation method of dendritic polyether shale inhibitor according to claim 5, it is characterised in that the reaction
Temperature is 90～150 DEG C；Preferably, the reaction temperature is 110～130 DEG C；
The ageing time is 1h.
8. the preparation method of dendritic polyether shale inhibitor according to claim 5, it is characterised in that the branch
The preparation method of shape polyethers shale inhibitor, including step is as follows：
End amido dendritic and catalyst are added in reactor, leads to nitrogen purging, evacuation；It is warming up to 60～80
DEG C, epoxyalkane being added, is reacted at a temperature of 90～150 DEG C, in question response device, pressure is down to constant, stopped reaction；Jing is aging,
Cooling, discharging, acid neutralization, desalination obtain final product dendritic polyether shale inhibitor；
Preferably, the addition speed of the epoxyalkane is 1～10g/min.
9. the preparation method of dendritic polyether shale inhibitor according to claim 5, it is characterised in that the branch
The preparation method of shape polyethers shale inhibitor, including step is as follows：
End amido dendritic and catalyst are added in reactor, leads to nitrogen purging, evacuation；It is warming up to 60～80
DEG C, expoxy propane is added, is reacted at a temperature of 90～150 DEG C；In question response device, pressure is down to constant, is cooled to 60～80 DEG C,
Oxirane is added, is reacted at a temperature of 90～130 DEG C, pressure is down to constant, stopped reaction in question response device；Jing is aging, cold
But, discharging, acid neutralization, desalination obtains final product dendritic polyether shale inhibitor；
Preferably, the molar concentration rate of the expoxy propane and oxirane is 1:1～1:10；
Preferably, the addition speed of the expoxy propane is 1～8g/min, and the addition speed of oxirane is 1～10g/min.
10. a kind of application of dendritic polyether shale inhibitor, the dendritic polyether shale inhibitor are coordinated with potassium salt
It is applied in drilling fluid；
Preferably, in the drilling fluid dendritic polyether shale inhibitor mass concentration be 0.1～5wt%, the matter of potassium salt
Amount concentration is 0.5～15wt%；It is further preferred that dendritic polyether shale inhibitor mass concentration is in the drilling fluid
0.5～3wt%, the mass concentration of potassium salt is 3～10wt%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN107794008A (en) * | 2017-10-25 | 2018-03-13 | 西南石油大学 | One kind synthesis hydridization polyamines drilling fluid inhibitor and preparation method thereof |
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| CN108192107B (en) * | 2017-12-29 | 2019-06-04 | 中国石油大学(华东) | A kind of shale stability agent and preparation method thereof |
| CN114014585A (en) * | 2021-11-10 | 2022-02-08 | 江苏盐砼新材料科技有限公司 | Anti-mud additive and preparation method thereof, compound early-strength polycarboxylate superplasticizer prepared by adopting anti-mud additive and preparation method thereof |
| CN114014585B (en) * | 2021-11-10 | 2022-10-28 | 江苏盐砼新材料科技有限公司 | Anti-mud additive and preparation method thereof, compound early-strength polycarboxylate superplasticizer prepared by adopting anti-mud additive and preparation method thereof |
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