CN108641686A - Superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern regulator and preparation method thereof - Google Patents
Superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern regulator and preparation method thereof Download PDFInfo
- Publication number
- CN108641686A CN108641686A CN201810560669.4A CN201810560669A CN108641686A CN 108641686 A CN108641686 A CN 108641686A CN 201810560669 A CN201810560669 A CN 201810560669A CN 108641686 A CN108641686 A CN 108641686A
- Authority
- CN
- China
- Prior art keywords
- flow pattern
- drilling fluid
- polycarboxylate
- water
- pattern regulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/14—Monomers containing only one unsaturated aliphatic radical containing one ring substituted by heteroatoms or groups containing heteroatoms
-
- 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
- C09K2208/34—Lubricant additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Abstract
The present invention relates to superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern regulators and preparation method thereof, the amphoteric ion polycarboxylate multipolymer with comb-type structure generated through aqueous free radical polymerisation by alkenyl benzene sulfonic acid salt, strongly hydrophilic cationic alkenyl quaternary ammonium salt and allyl polyethenoxy ether containing specific backbone, contain 7 20 structural units in the multiple copolymer strand of generation, weight average molecular weight range is 6,500 12,500.The viscosity and shear force of superhigh temperature ultrahigh-density water-base drilling fluid completion fluid can be greatly reduced in this polycarboxylate flow pattern regulator, improve solid phase weighting material dispersity in water-base drilling fluid completion fluid, improve the rheological characteristic of superhigh temperature ultrahigh-density water-base drilling fluid completion fluid, it is substantially reduced the surface tension of superhigh temperature water base drilling fluid completion fluid, increase the greasy property of superhigh temperature ultrahigh-density water-base drilling fluid, and mud shale rejection and high temperature stability performance are had both, 251 DEG C or more of high temperature can be resisted.
Description
Technical field：
The present invention relates to a kind of superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern regulator and its
Preparation method belongs in oil and gas drilling engineering, Earth resource exploration and exploitation and geothermal well drilling engineering and bores
Well liquid and completion fluid technical field.
Background technology：
In recent years, with oil-gas exploration and development in the world develop in depth and breadth and the exploration of the deep resource in China, Continental Science
Chance is bored in the lasting propulsion of the great deep ground project such as drilling project, Earth survey plan and geothermal well drilling engineering
Superhigh temperature reservoir is more and more, is bored during drilling engineering and meets super-pressure stratum (formation pore pressure is more than 138MPa) and superelevation
The probability of warm stratum (temperature is more than 220 DEG C) increases year by year, therefore, ultrahigh-density water-base drilling fluid completion is used in drilling process
The case where liquid system, superhigh temperature water base drilling fluid completion fluid system and superhigh temperature ultrahigh-density water-base drilling fluid completion fluid system, gets over
Come more.However, for superhigh temperature stratum, the maintenance of ultrahigh-density water-base drilling fluid completion fluid and processing often complex,
It is often stuck with the vicious circle of " exacerbation → thickening → viscosity reduction → heavy weight additive sedimentation → density declines → aggravates again ", influences drilling well
Be smoothed out, in some instances it may even be possible to cause serious underground complex accident.Since ultra high density drilling fluid system solid concentration is very high,
Solid concentration is even as high as 50-60%, thus the viscosity of drilling fluid and completion fluid and shear force are usually larger, the downhole environment of superhigh temperature
Condition can cause the physical and chemical reaction of a series of complex again, and the mobile performance of drilling fluid and completion fluid is caused significantly to deteriorate, and surpass
The regulation and control of the rheological characteristic of high temperature ultra high density drilling fluid system will become abnormal difficult, usually show both ways, first, being difficult to
Preparing successfully has the preferably anti-superhigh temperature ultra high density drilling fluid and completion fluid system of rheological property, second is that being difficult to maintain normally to bore
Into the stabilization of superhigh temperature ultrahigh-density water-base drilling fluid completion fluid rheological property in the process.Therefore, how superhigh temperature is effectively improved
The mobility of ultrahigh-density water-base drilling fluid completion fluid, and the sedimentation stability of high density solid phase weighting material can be maintained, it solves
The regulation and control problem of good superhigh temperature ultrahigh-density water-base drilling fluid completion fluid rheological characteristic is the key technology that drilling engineering is smoothed out
One of, and developing can resist the high-performance flow pattern regulator of superhigh temperature to be the effective technical way for solving this problem.
Currently, drilling engineering scene usually uses the thinner of various high-molecular compounds or diluent super as superhigh temperature
The flow pattern regulator of high-density water-based drilling fluid completion fluid, such as sulfomethylation tannin, lignosulfonates, some low average moleculars
The polymer of the polymer of quality and low relative molecular mass grafting natural macromolecular material etc., but these existing thinners or
Diluent still has the features such as infull functionality, temperature resistance scarce capacity.
Also there is numerous patents file report about drilling fluid flow pattern regulator, such as：Chinese patent document
CN102485826A discloses a kind of low temperature microbubble drilling fluid flow pattern conditioning agent and its application；The flow pattern regulator by xanthans and
Inorganic boron crosslinking agent is formulated, and the mass ratio of xanthans and inorganic boron crosslinking agent is 1: 1~2: 1, and the flow pattern regulator is water-soluble
Object content >=90%, moisture≤15%, it is 5.0~7.0 that flow pattern regulator, which is configured to the pH value after 0.5% aqueous solution, table
Sight 15~25mPas of viscosity, microvesicle stabilization time >=for 24 hours, it is used as microbubble drilling fluid flow pattern conditioning agent, in micro-foam drilling fluid
Water base meter per hectogram, low temperature microbubble drilling fluid flow pattern conditioning agent dosage are 0.1~0.4 gram.Again for example：Chinese patent document
CN107955586A discloses a kind of cellulose nano-fibrous application as drilling fluid flow pattern regulator.Cellulose Nanowire
Dimension is applied to drilling fluid flow pattern regulator, and the cellulose nano-fibrous amount of filling in drilling fluid is 0.1~3.0%, by volume
Than.But above-mentioned xanthans and cellulose etc. belong to natural macromolecular material, this kind of material be influenced by temperature it is larger,
When temperature is more than 120 DEG C, xanthans and the molecular structure of cellulose family macromolecule material and its modified product are in hot conditions
Under be highly prone to destroy, to cause the high temperature failure of xanthans and cellulose family flow pattern regulator, thus it can not be applied
In high temperature or ultra-high temperature drilling liquid completion fluid；In addition, such as above-mentioned flow pattern regulator makees the adjusting of water-base drilling fluid rheological characteristic
With the thickening for the Drilling and completion fluids for being generally mainly used in low-density and the effect of cutting is proposed, it is water base not to be suitable for high-temperature high-density
Drilling fluid and completion fluid and superhigh temperature ultrahigh-density water-base drilling fluid completion fluid, i.e., it is water base to the high temperature containing high solid phase or superhigh temperature
Drilling fluid and completion fluid and the effect cut without viscosity reduction, drop.Again for example：The polymeric articles of some low relative molecular masses by with
When flow pattern regulator or thinner as high-temperature high-density water-base drilling fluid completion fluid, it is limited to its specific molecule knot
Structure mainly faces the technical problem of heat-resisting property difference, and when temperature is more than 180 DEG C, its failure can be generally caused because of high temperature,
Thus the temperature resistance ability of this kind of drilling fluid and completion fluid flow pattern regulator is usually less than 180 DEG C, therefore, is also not particularly suited for surpassing
In high temperature ultrahigh-density water-base drilling fluid completion fluid.However, high-performance polycarboxylic acid salt product is because it is with low-dosage, strong dispersion
And environmentally protective equal excellent performances, it is used in concrete water mud as a kind of high efficiency water reducing agent in recent years and regulates and controls its slurry
Performance, be also used in the regulation and control of CWS Reological Properties and used as a kind of strong dispersant.But polycarboxylate is used in super
It is not yet had been reported that as the research of efficient flow pattern regulator and application in high-density water-based drilling fluid completion fluid, and according to polycarboxylic acids
Salt action is in the peptizaiton mechanism of high concentration solid phase particles turbid solution so that it is in ultrahigh-density water-base drilling fluid completion fluid
It has broad application prospects；In addition, the good temperature resistance ability of polycarboxylate is again so that it has in superhigh temperature water base drilling fluid
Therefore polycarboxylate is used for superhigh temperature ultrahigh-density water-base drilling fluid completion fluid flow pattern tune by the potentiality applied in completion fluid
Section agent and to overcome traditional drilling fluid and completion fluid with the technical barrier that traditional flow pattern regulator faces be still those skilled in the art's need
Want urgent problem to be solved.
Invention content：
In view of the deficiencies of the prior art, the present invention provides one kind and can resist superhigh temperature, ultra high density drilling fluid is greatly reduced
The viscosity and shear force of completion fluid reduce the surface tension of superhigh temperature water base drilling fluid completion fluid, improve superhigh temperature ultra high density water
Solid phase weighting material dispersity in base drilling fluid completion fluid improves the rheology of superhigh temperature ultrahigh-density water-base drilling fluid completion fluid
Property, increase the greasy property of superhigh temperature ultrahigh-density water-base drilling fluid, and have both certain mud shale rejection and high temperature is steady
Drilling fluid and completion fluid polycarboxylic acid salt's flow pattern regulator of qualitative energy.
Technical scheme is as follows：
A kind of superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern regulator has formula (I) described
Structure：
The flow pattern regulator is by alkenyl benzene sulfonic acid salt, strongly hydrophilic cationic alkenyl quaternary ammonium salt and containing backbone
The amphoteric ion polycarboxylate three with comb-type structure that allyl polyethenoxy ether is generated through aqueous free radical polymerisation
Membered copolymer；
In formula (I), x, y and z respectively represent anionic reactive monomer alkenyl benzene sulfonic acid salt, allyl polyoxy in structural formula
The molal quantity of vinethene polymeric monomer and cationoid reaction monomer alkenyl quaternary ammonium salt, m represent the allyl polyoxy containing backbone
The repeating segment number of polyoxy alkyl in vinethene.
, according to the invention it is preferred to, in the flow pattern regulator molecular structure main chain, containing 7-20 structural unit,
Weight average molecular weight range is in 6,500-12,500；Molar ratio x ﹕ y=(0.35-0.85) ﹕ (0.55-1.55), alkenyl quaternary ammonium salt
Weight accounts for the 3-15% of alkenyl benzene sulfonic acid salt and allyl polyethenoxy ether total weight, m=5-26.
, according to the invention it is preferred to, the degree of unsaturation of the allyl polyethenoxy ether of backbone is more than 1.25mmol/g,
Hydroxyl value is 85-155mgKOH/g.
, according to the invention it is preferred to, in the flow pattern regulator molecular structure main chain, containing 10-15 structural unit,
Weight average molecular weight range is in 7,000-10,000；Molar ratio x ﹕ y=(0.45-0.65) ﹕ (0.75-1.25), alkenyl quaternary ammonium salt
Weight accounts for the 3-8% of alkenyl benzene sulfonic acid salt and allyl polyethenoxy ether total weight, m=5-15.
, according to the invention it is preferred to, in the flow pattern regulator molecular structure main chain, containing 7-12 structural unit,
Weight average molecular weight range 10,000-12,000, molar ratio x ﹕ y=(0.48-0.52) ﹕ (0.85-1.15), alkenyl quaternary ammonium salt
Weight accounts for the 5-12% of alkenyl benzene sulfonic acid salt and allyl polyethenoxy ether total weight, m=12-15.
According to the present invention, the system of above-mentioned superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern regulator
Preparation Method includes the following steps：
Reactant alkenyl benzene sulfonic acid salt, strongly hydrophilic cationic alkenyl quaternary ammonium salt and allyl containing backbone are gathered
Ethylene oxide ether is proportionally added in the reaction kettle equipped with solvent, and reaction is poured into after catalyst is added in solvent fully dissolving
In kettle, reactant mixed liquid concentration is adjusted with solvent, is heated by heating water bath or steam-heated mode mixed in reaction kettle
Conjunction liquid, maintains the reaction time, terminates reaction, is cooled to room temperature to use to get superhigh temperature ultrahigh-density water-base drilling fluid completion fluid and gather
Carboxylate flow pattern regulator.The flow pattern regulator is certain density faint yellow to rufous fluid product.
, according to the invention it is preferred to, the solvent is water；
Preferably, the catalyst is the combination of persulfate and sodium hydrogensulfite；Alternatively, drawing for water-soluble azo class
Send out agent, amphipathic azo initiator alternative one or combination；
Preferably, the mass ratio of persulfate and sodium hydrogensulfite is 1：1.
, according to the invention it is preferred to, the persulfate is potassium peroxydisulfate or ammonium persulfate；
Preferably, the water-soluble azo class initiator is two isobutyl imidazoline of azo-bis-isobutyrate hydrochloride or azo
Hydrochloride, the amphipathic azo-initiator are azo isobutyl cyano formamides.
, according to the invention it is preferred to, reactant total weight accounts for the 30- for the total solution weight that reactant is formed with solvent
60wt%；
When catalyst is the combination of persulfate and sodium hydrogensulfite, the addition of catalyst is reactant total weight
0.5-4wt%；
When catalyst is water-soluble azo class initiator or/and amphipathic azo initiator, the addition of catalyst is
The 0.1-2wt% of reactant total weight.
, according to the invention it is preferred to, reaction temperature is 60-95 DEG C；Reaction time is 1.5 hours to 6 hours.
Intrinsic category of the present invention according to the superhigh temperature ultrahigh-density water-base drilling fluid completion fluid weighting particles of solid phase containing high concentration
Property and its specific physicochemical characteristic having under superhigh-temperature and-pressure, from polycarboxylate to the water base brill of superhigh temperature ultra high density
The research of the well liquid completion fluid mechanism of action is starting point, devises the molecule knot of the polycarboxylate suitable for drilling fluid and completion fluid
The polycarboxylate flow pattern regulator suitable for superhigh temperature ultrahigh-density water-base drilling fluid completion fluid system of structure, preparation has well
Effect.
The reaction process of the present invention is as follows：
The mechanism of action of the superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern regulator of the present invention
And have the beneficial effect that：
(1) surface tension effects mechanism is reduced.After a small amount of polycarboxylate prevalence conditioning agent is added, superhigh temperature is reduced
The surface tension of ultrahigh-density water-base drilling fluid completion fluid, can effectively improve under hyperthermal environments improves superelevation solid phase
Grain wettability of the surface energy, improves other high temperature resistance inorganic agents consistency problem caused by the variation of subcritical water characteristic
With the coalescence performance of high concentration inertia native place particle, while the greasy property on superelevation solid phase particles surface can be improved again.
(2) effectively inhibit the aquation pulping of clay mineral and improve the peptizaiton machine of clay mineral and weighting agent particles
Reason.The characteristic of amphoteric ion polycarboxylate is so as to effectively inhibit pulping of the clay mineral particle under ultra-high temperature condition
Can, have the effects that the specific molecular structure of comb-type structure can be such that clay mineral particle is adsorbed under hydrogen bond and electrostatic force again
Clay mineral and heavy weight additive surface, reduce the Zeta potential of solid phase particles, enable clay mineral particle in superelevation solid phase particles
Under the conditions of keep good dispersity, the long chain characteristic of polyoxyethylene chain that can increase the space between solid phase particles surface again
Steric hindrance inhibits coalescence characteristic of the clay mineral particle under ultra-high temperature condition, to which superhigh temperature superelevation be greatly reduced
The viscosity of density water-base drilling fluid completion fluid, the stabilization of shear force and its rheological characteristic, and improve the water base brill of superhigh temperature ultra high density
The leak-off wall building property of well liquid completion fluid.
Description of the drawings：
Fig. 1 is the superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern that the embodiment of the present invention 2 obtains
The infrared spectrum feature spectrogram of conditioning agent.
Fig. 2 is the superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern that the embodiment of the present invention 2 obtains
Conditioning agent nuclear magnetic resonance C spectrum signature spectrograms.
Specific implementation mode：
Below by specific embodiment, the invention will be further described, but not limited to this.
It is raw materials used in embodiment, it is unless otherwise specified regular market purchase product.
Superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern regulator in embodiment has formula (I)
The structure：
The flow pattern regulator is by alkenyl benzene sulfonic acid salt, strongly hydrophilic cationic alkenyl quaternary ammonium salt and containing backbone
The amphoteric ion polycarboxylate three with comb-type structure that allyl polyethenoxy ether is generated through aqueous free radical polymerisation
Membered copolymer；
In formula (I), x, y and z respectively represent anionic reactive monomer alkenyl benzene sulfonic acid salt, allyl polyoxy in structural formula
The molal quantity of vinethene polymeric monomer and cationoid reaction monomer alkenyl quaternary ammonium salt, m represent the allyl polyoxy containing backbone
The repeating segment number of polyoxy alkyl in vinethene.
Embodiment 1：
56.68 grams of alkenyl benzene sulfonic acid sodium is weighed to be added equipped with blender, reflux condenser, nitrogen protection device, temperature
In the reaction kettle that the capacity of sensor and heating device is 2.5 liters, 500 milliliters of tap water is added, opens agitating device, high speed
Stirring makes it fully dissolve；392 grams of allyl polyethenoxy ether (the repeating segment number m=12-15 of polyoxy alkyl) is weighed to fall
Enter in reaction kettle；It weighs 22.43 grams of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride to pour into reaction kettle, high-speed stirred 10 is divided
Clock；It weighs 18.89 grams of ammonium persulfate and is substantially dissolved in 200 milliliters of tap water, poured into reaction kettle and high speed
It stirs evenly, the rear tap water that is added is to originally water inventory to 1575 milliliters；Logical nitrogen, high-speed stirred are warming up to 78-83 after five minutes
DEG C, 4 hours postcoolings of reaction are to room temperature to get the poly- carboxylic of superhigh temperature ultrahigh-density water-base drilling fluid completion fluid of the present invention
Hydrochlorate flow pattern regulator, mass concentration are about 30%.
In this flow pattern regulator, the molar ratio x ﹕ y=0.50 ﹕ 1.00 of alkenyl benzene sulfonic acid salt and allyl polyethenoxy ether,
The weight of alkenyl quaternary ammonium salt accounts for the 5.0% of alkenyl benzene sulfonic acid salt and allyl polyethenoxy ether total weight, and the weight of polycarboxylate is equal
Molecular weight is about 10,500, and structural unit number is about 9-11.
Embodiment 2：
It is 1.5 to the capacity equipped with blender, reflux condenser, nitrogen protection device, temperature sensor and heating device
61.8 grams of alkenyl benzene sulfonic acid sodium is weighed in the reaction kettle risen, 600 milliliters of tap water is added, and opens agitating device, high-speed stirring
Mixing makes it fully dissolve；216 grams of allyl polyethenoxy ether (the repeating segment number m=5-9 of polyoxy alkyl) is weighed to pour into instead
It answers in kettle；It weighs 18.1 grams of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride to pour into reaction kettle, high-speed stirred 10 minutes；Claim
It takes 3.55 grams of azo-bis-isobutyrate hydrochloride and is substantially dissolved in 100 milliliters of tap water, poured into reaction kettle simultaneously
High-speed stirred is uniform, and the rear tap water that is added leads to nitrogen, high-speed stirred is warming up to after five minutes to originally water inventory to 850 milliliters
63-68 DEG C, 4 hours postcoolings of reaction are to room temperature to get superhigh temperature ultrahigh-density water-base drilling fluid completion fluid of the present invention
With polycarboxylate flow pattern regulator, mass concentration is about 35%.
In this flow pattern regulator, the molar ratio x ﹕ y=0.50 ﹕ 1.20 of alkenyl benzene sulfonic acid salt and allyl polyethenoxy ether,
The weight of alkenyl quaternary ammonium salt accounts for the 6.5% of alkenyl benzene sulfonic acid salt and allyl polyethenoxy ether total weight, and the weight of polycarboxylate is equal
Molecular weight is about 7,900, and structural unit number is about 11-13.
Embodiment 3：
It it is 3-3.5 tons to the capacity equipped with blender, reflux condenser, nitrogen protection device, thermometer and heating device
The corrosion-resistant reaction kettle of stainless steel in be first added 500 kilograms of tap water, turn on agitator, with 25 kg/min of rate by 142
Kilogram sodium p styrene sulfonate be added in reaction kettle, stirring is to being uniformly dissolved；With 50 kg/min of rate by 497 kilograms
Allyl polyethenoxy ether (the repeating segment number m=5-9 of polyoxy alkyl) be added reaction kettle in, stir 10 minutes；It adds
41.5 kilograms of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride pours into reaction kettle, high-speed stirred 10 minutes；Weigh 8.166 thousand
Gram azo-bis-isobutyrate hydrochloride and be substantially dissolved in the tap water of double centner, pour into reaction kettle, stir 10 points
Clock；Tap water total weight is added to 1950 kilograms, leads to nitrogen, stirring is warming up to 65-70 DEG C after 30 minutes, cold after reacting 4 hours
But to room temperature to get superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern regulator of the present invention,
Mass concentration is about 35%.
In this flow pattern regulator, the molar ratio x ﹕ y=0.50 ﹕ 1.20 of alkenyl benzene sulfonic acid salt and allyl polyethenoxy ether,
The weight of alkenyl quaternary ammonium salt accounts for the 6.5% of alkenyl benzene sulfonic acid salt and allyl polyethenoxy ether total weight, and the weight of polycarboxylate is equal
Molecular weight is about 7,500, and structural unit number is about 10-13.
Comparative example 1：
Usually, the water-soluble polymer with low relative molecular mass all has high-temperature high-density drilling fluid certain
Viscosity reduction, the drop effect of cutting, but it is affected by the density value of temperature and drilling fluid and completion fluid, when temperature is more than 220 DEG C, density
Up to 2.35g/cm3When above, then often it is difficult to play effect, often reacts on superhigh temperature ultra high density water-based drilling instead
Liquid.Therefore, to make the flow pattern regulator of the present invention that there is anti-superhigh temperature and its can be in ultrahigh-density water-base drilling fluid completion fluid
In there is good viscosity reduction and drop to cut performance, the allyl polyethenoxy ether with specific length molecule branch introduces and its low
The content height of shared molar ratio is to the novel super-high temperature ultra high density water-based drilling in relative molecular mass polymer molecular chain
The comprehensive function influential effect of liquid completion fluid flow pattern regulator is notable, wherein mainly by allyl polyethenoxy ether molecule branch
Effect length it is the most apparent, allyl polyethenoxy ether molecule branch it is long or too short also reduce synthetic product drop
It glues, cut effect.For this purpose, during synthesizing the flow pattern regulator, if the weight of alkenyl quaternary ammonium salt be alkenyl benzene sulfonic acid salt and
The w% of allyl polyethenoxy ether total weight, control other Variable Conditions it is constant under conditions of, pass through change allyl polyoxy second
The length of alkene ether molecule branch changes the size of m in flow pattern regulator molecular structure formula (I) of the present invention, synthesis comparison
Example sample 1-1 (x ﹕ y=0.50 ﹕ 1.20, w=6.5, m=5-7), comparative example 1-2 (x ﹕ y=0.50 ﹕ 1.20, w=6.5, m
=10-12), comparative example 1-3 (x ﹕ y=0.50 ﹕ 1.20, w=6.5, m=14-16), comparative example 1-4 (x ﹕ y=
0.50 ﹕ 1.20, w=6.5, m=19-21), comparative example 1-5 (x ﹕ y=0.50 ﹕ 1.20, w=6.5, m=24-26).
The preparation of ultrahigh-density water-base drilling fluid：Tarim Oilfield jump three spudding well scene drilling fluid 400mL of full 6 well is taken,
Be placed in it is high stir in cup under 8000 revs/min of stir speed (S.S.) high-speed stirred after twenty minutes, according to the matter of barite and Iron Ore Powder
Amount ratio is 2:Under 1 heavy weight additive proportioning, which is weighed out to 2.55g/cm3, continue high-speed stirred after 30 minutes to obtain the final product
Ultrahigh-density water-base drilling fluid.
Test the preparation and test of slurry：0.5% each comparative example is added into ultrahigh-density water-base drilling fluid respectively,
High-speed stirred is uniform under 8000 revs/min of mixing speed, surveys the rheological characteristic of each experiment slurry, the results are shown in Table 1.
Test result of the table 1 in ultrahigh-density water-base drilling fluid
Comparative example 2：
In the present invention, when the polymerization in the linear low relative molecular mass being made of alkenyl benzene sulfonic acid salt and alkenyl quaternary ammonium salt
After introducing the allyl polyethenoxy ether with long-chain branch in object, this flow pattern regulator is just provided with comb-type structure, when the flow pattern
When conditioning agent is in the higher drilling fluid and completion fluid of clay mineral content, part polyoxyethylene ether long branched chain structure just can be embedded in glutinous
The interlayer of native mineral, to prevent the strong peptizaiton of clay mineral under the high temperature conditions；And part polyoxyethylene ether branch chains
Structure is then adsorbed on clay mineral particle surface, and can prevent the coalescence effect of clay mineral under the high temperature conditions.In the present invention
Flow pattern regulator has stronger suction-operated, molecule to the high concentration solid phase particles disperseed in ultrahigh-density water-base drilling fluid
The positively charged alkenyl quaternary ammonium salt contained in chain is one of the main reasons.But when the chain link of alkenyl quaternary ammonium salt side chain is more, i.e.,
When the reaction ratio of alkenyl quaternary ammonium salt monomer is excessive, the relative molecular mass of the polycarboxylate flow pattern regulator of synthesis then compared with
Height is difficult to control in reaction, and influences the copolymerization of alkenyl benzene sulfonic acid salt and allyl polyethenoxy ether, reduces synthetic product
Surface-active, and then the decrease that function and effect of the synthetic product in superhigh temperature ultrahigh-density water-base drilling fluid will be led to.For this purpose,
During synthesizing the flow pattern regulator, if the weight of alkenyl quaternary ammonium salt is alkenyl benzene sulfonic acid salt and allyl polyethenoxy ether
The w% of total weight, control other Variable Conditions it is constant under conditions of, pass through change alkenyl quaternary ammonium salt reaction ratio, synthesis pair
Ratio sample 2-1 (x ﹕ y=0.50 ﹕ 1.20, w=5, m=10-12), comparative example 2-2 (x ﹕ y=0.50 ﹕ 1.20, w=10,
M=10-12), comparative example 2-3 (x ﹕ y=0.50 ﹕ 1.20, w=15, m=10-12), comparative example 2-4 (x ﹕ y=
0.50 ﹕ 1.20, w=20, m=10-12), comparative example 2-5 (x ﹕ y=0.50 ﹕ 1.20, w=25, m=10-12).
It is consistent described in the preparation of ultrahigh-density water-base drilling fluid, the preparation of experiment slurry and test method and comparative example 1, as a result
As shown in table 2.
Test result of the table 2 in ultrahigh-density water-base drilling fluid
Drilling fluid and completion fluid is evaluated with the impact of performance of polycarboxylate flow pattern regulator below by test example.
Test method in test example：①GB/T 32198-2015：IR spectrum quantitative analysis technology general rule；2. nuclear-magnetism
The C that resonates composes standard.③GB/T 5005-2010：Drilling fluid materials specification.④SY5444-1992：Drilling fluid evaluation soil.⑤
SY/T 5695-1995：Drilling fluid amphoteric ion polymer thinner XY27.6. using GB/T 16738-1997：Water base brill
Well liquid On-Site Test Procedure.
Test example 1
The superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern regulator that testing example 2 obtains
Infrared spectrum feature spectrogram, as shown in Figure 1.
Test example 2
The superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern regulator that testing example 2 obtains
Nuclear magnetic resonance C spectrum signature spectrograms, as shown in Figure 2.
Test example 3
The superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern regulator that testing example 1 obtains
Relative molecular mass.
Using gel permeation chromatograph, analysis has obtained the superhigh temperature ultrahigh-density water-base drilling fluid completion fluid of embodiment 1
With the relative molecular mass of polycarboxylate flow pattern regulator, the results are shown in Table 3.
The relative molecular mass of 3 embodiment of table, 1 sample is analyzed
Test example 4
The superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern regulator that testing example 3 obtains
Some surface active property is tested, and the results are shown in Table 4.
In 4 distilled water of table under various concentration 3 sample solution of embodiment surface tension
Test example 5
Test the test influenced on base slurry rheological property under hyperthermal environments
The preparation of base slurry：32g drilling fluids two level bentonite is added in 400mL tap water respectively, at 8000 revs/min
Stir speed (S.S.) under high-speed stirred 30 minutes, 40g drilling fluids evaluation soil is then added, continues high-speed stirred 2h, it is small to stand 24
When after up to the testing experiment base slurry after prehydration.
Test the preparation and test of slurry：1.5% superhigh temperature of the present invention is added into the base slurry after prehydration respectively
Ultrahigh-density water-base drilling fluid completion fluid evaluates sample (1 sample of embodiment, 2 sample of embodiment, implementation with polycarboxylate flow pattern regulator
3 sample of example) and 0.5% drilling fluid with amphoteric ion polymer thinner XY27, the high-speed stirring under 6000 revs/min of mixing speed
Average price is mixed, the rheological characteristic of each experiment slurry is tested.Experiment is starched and is packed into high temperature ageing tank, heat rolling aging 16 is small under 240 DEG C of environment
When, the rheological characteristic of each experiment slurry is tested with same method.
The computational methods of rheological parameter：The computational methods of viscosity break ratio are according to the computational methods in SY/T 5695-1995, i.e.,
Viscosity break ratio=(Φ ' 100- Φ 100)/Φ ' 100 × 100% (1)
In above formula (1)：Φ ' 100 is that the base slurry of evaluation sample is not added after 240 DEG C of high temperature ageings 16 hours in six speed rotations
It is the reading under 100RPM to turn viscosity metering rotating speed, and Φ 100 be that the experiment of evaluation sample is added to starch through 240 DEG C of high temperature ageings 16 hours
Reading in the case where six fast rotary viscosity metering rotating speeds are 100RPM afterwards.
The reduced rate of the change rate of remaining rheological parameter, i.e. apparent viscosity (AV), the reduced rate of plastic viscosity (PV) are moved and are cut
The reduced rate of power (YP), reduced rate, the reduced rate of Φ 6 and the reduced rate of Φ 3 of gel strength (Gel 10 " and Gel 10') follow
Following general formula：
As a result as shown in Table 5,6.
5 superhigh temperature ultrahigh-density water-base drilling fluid completion fluid of table starches rheology impact with polycarboxylate flow pattern regulator to base
Test result
6 superhigh temperature ultrahigh-density water-base drilling fluid completion fluid of table starches base with polycarboxylate flow pattern regulator old through 240 DEG C
Rheology is joined after change
The evaluation result of number regulating effect
Test example 6
Inhibit the performance of bentonite pulping
Test the preparation and test of slurry：Evaluation sample (1.5% embodiment, 3 sample, 0.5%XY- are added in 400mL clear water
27,1% drilling fluid fluosilicic thinner SF260 and 0.5% polyamine) and 5% drilling fluid two level bentonite, height stir 30min, starch
Liquid heat rolling 16 hours at 70 DEG C, then cool to room temperature, and height tests slurries rheological property after stirring 5min.Add 5% swelling
Soil, height stir after 30min heat rolling 16 hours at 70 DEG C, are cooled to room temperature, test slurries rheological property.So it is repeated up to slurries
Until viscosity exceeds instrument range very much greatly.Φ 3 reads reckling and shows that it inhibits the best performance of bentonite pulping.As a result such as table
Shown in 7.
Table 7 inhibits bentonite pulping the performance test results
Test example 7
To the dispersion performance of clay mineral particle in water
Test the preparation and test of slurry：7 grams of sodium bentonites for sieving with 100 mesh sieve net are added in 350 ml deionized waters,
Then each evaluation sample (0.1% Carbon Dioxide of certain content is added in high-speed stirred 20 minutes at 8000-10000RPM
Sodium, 1% embodiment, 1 sample, 1% embodiment, 2 sample, 1% embodiment, 3 sample, 5% potassium chloride, 5% sodium chloride and 0.5% polyamine),
It is transferred to after twenty minutes under 8000-10000RPM high-speed stirreds in 100 milliliters of tool plug graduated cylinders, standing observes each evaluation sample afterwards for 24 hours
Dispersion to Na-bentonite soil particle and flocculation situation, record flocculation scale value calculate flocculating rate according to the following formula：
C=(Hw-Hi)/Hw× 100% (2)
In above formula (2)：
C：Indicate flocculating rate of the test drug to abundant aquation sodium bentonite；
Hw：The flocculation scale value of sodium bentonite when indicating abundant aquation, usually 100；
Hi：Flocculation scale value of each test drug to sodium bentonite.
The results are shown in Table 8.
Dispersion performance test result of the table 8 to clay mineral particle in water
| Serial number | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Sample | Na2CO3 | 1 sample of embodiment | 2 sample of embodiment | 3 sample of embodiment | KCl | NaCl | Polyamine |
| Hi | 100 | 100 | 100 | 100 | 47 | 54 | 32 |
| Flocculating rate/% | 0 | 0 | 0 | 0 | 53 | 46 | 68 |
Test example 8
Test in superhigh temperature ultrahigh-density water-base drilling fluid completion fluid
The preparation of low solid phase fresh water-based slurry：400 milliliters of tap water of addition in cup are stirred in height, speed is stirred at 8000 revs/min
0.2-0.3 grams of natrium carbonicum calcinatum and 4-6 grams of drilling fluid two level bentonite are sequentially added under degree, are stirred 2 hours, it is closed to stand 24
Hour is the good low solid phase fresh water-based slurry of prehydration, and solid concentration is about 1-1.5%.
The preparation of superhigh temperature ultrahigh-density water-base drilling fluid completion liquid-based slurry：400 milliliters of low solid phase fresh water-based slurrys are measured,
High-speed stirred 20 minutes on 8000 revs/min of homogenizer, then sequentially add 0.3-0.5 parts of caustic soda, 0.2-0.5 parts it is anti-
The amphoteric ion hydrophobic association polymerization of superhigh temperature anionic polymer fluid loss additive, 0.2-0.7 parts of anti-anti- complex salts of superhigh temperature
II type of object fluid loss additive, 3-6 part sulfonated-pheno-formoldehyde resin, 2-5 parts of II types of sulfonated lignite resin, 2-6 parts of high temperature block anti-sloughing agents,
0.5-2 parts of polymeric alcohols, 1-3 parts of lubricants, 3-7 parts of potassium chloride, 1100 grams of compound heavy weight additive (Iron Ore Powder and barite mass ratioes 2：
1 compounding), high-speed stirred 20-30 minutes after a kind of inorganic agent are often added, superelevation of the present invention can be made according to the above method
Warm ultrahigh-density water-base drilling fluid completion liquid-based slurry, density 2.50-2.55g/cm3。
Test method：Superhigh temperature ultrahigh-density water-base drilling fluid completion liquid-based is taken to starch 400 milliliters, at 8000 revs/min
High-speed stirred is uniform under mixing speed, and 1-3 parts of 3 samples of embodiment are added, and high-speed stirred 30 minutes is to get superhigh temperature ultra high density water
Base drilling fluid completion fluid system surveys the rheological characteristic and leak-off of experiment slurry.Experiment is starched and is packed into high temperature ageing tank, at 240 DEG C
Heat rolling aging 16 hours, the rheological characteristic and leak-off of experiment slurry are tested with same method in high temp roller furnace.As a result such as table 9
It is shown.
Test result of the table 9 in superhigh temperature ultrahigh-density water-base drilling fluid completion fluid
Note：For the superhigh temperature ultrahigh-density water-base drilling fluid completion fluid system of 3 sample of embodiment is added, No. 2 are formulated No. 1 formula
For the superhigh temperature ultrahigh-density water-base drilling fluid completion liquid-based slurry of embodiment sample is not added, the test condition of HTHP filter losses is
180℃/3.5MPa。
Test example 9
Test in superhigh temperature water base drilling fluid completion fluid
The preparation of superhigh temperature water base drilling fluid completion liquid-based slurry：400 milliliters of fresh water-based slurrys are measured, at 6000-8000 revs/min
Then high-speed stirred 20 minutes on the homogenizer of clock sequentially add 0.1-0.3 parts of sodium hydroxides, 0.3-0.7 parts of anhydrous sodiums
Sodium sulphate, 0.5-1 portions of anti-superhigh temperature anionic polymer fluid loss additives, 0.5-2 parts of anti-anti- complex salts of superhigh temperature both sexes from
Sub- hydrophobic associated polymer fluid loss additive, 1-3 parts of II types of sulfonated-pheno-formoldehyde resin, 3-5 parts of Special Resins, 2-4 parts of high softening-points
Sulfonated gilsonite powder, 0.5-2 part modified graphite, 1-4 parts of polymeric alcohols, 0.3-1.5 parts of polyamine, 0.3-1 parts of sorbitan fatty acid esters,
40 grammes per square metre spar are often added high-speed stirred 20 minutes after a kind of inorganic agent, superelevation of the present invention can be made according to the above method
Warm water base drilling fluid completion liquid-based is starched, density 1.15g/cm3。
Test method：Superhigh temperature water base drilling fluid completion liquid-based is taken to starch 400 milliliters, in 8000 revs/min of mixing speed
Lower high-speed stirred is uniform, and 0.8-2 parts of 3 samples of embodiment are added, and high-speed stirred 20 minutes is to get superhigh temperature water base drilling fluid completion fluid
System surveys the rheological characteristic and leak-off of experiment slurry.Experiment is starched and is packed into high temperature ageing tank, in 248 DEG C and 251 DEG C of high temp rollers
Heat rolling aging 16 hours, the rheological characteristic and leak-off of experiment slurry are tested with same method in stove.The results are shown in Table 10.
Test result of the table 10 in superhigh temperature water base drilling fluid completion fluid
Note：No. 1 formula is the superhigh temperature water base drilling fluid completion liquid-based slurry that embodiment sample is not added, and No. 2 are formulated and No. 3
Formula to be added the superhigh temperature water base drilling fluid completion fluid system of embodiment sample, the test conditions of HTHP filter losses is 180 DEG C/
3.5MPa。
Interpretation of result：
Show superhigh temperature ultrahigh-density water-base drilling fluid completion fluid of the present invention from the test result of test example 1 to 3
It is by alkenyl anionic monomer sodium styrene sulfonate, allyl polyethenoxy ether (polyoxy alkyl with polycarboxylate flow pattern regulator
Repeating segment number m=5-15) and alkenyl cationic monomer MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride occur polymerisation
And generate, weight average molecular weight is about 10000 or so, and number-average molecular weight is about 8000 or so.
Show superhigh temperature ultrahigh-density water-base drilling fluid completion of the present invention from the experimental results of test example 4
Liquid polycarboxylate flow pattern regulator has the performance that can reduce aqueous solution surface tension, surface active properties apparent.
Show that superhigh temperature ultrahigh-density water-base drilling fluid completion fluid of the present invention is used from the test result of test example 5
Polycarboxylate flow pattern regulator can be obviously improved the rheological characteristic of superhigh temperature water base drilling fluid completion fluid, can greatly reduce water base
Viscosity, yield value and the gel strength of drilling fluid and completion fluid, viscosity break ratio up to 85% or more, plastic viscosity reduced rate up to 32% or more,
For yield value reduced rate up to 80% or more, the reduction amplitude of gel strength is up to 95% or more, it is thus possible to significantly improve water base brill
Thickening properties of the well liquid completion fluid after superhigh temperature aging make superhigh temperature water base drilling fluid keep good rheological characteristic.
Show superhigh temperature ultrahigh-density water-base drilling fluid completion fluid of the present invention from the test result of test example 6 and 7
It on the one hand can effectively inhibit the pulping performance of bentonite clay particle in water, another aspect and energy with polycarboxylate flow pattern regulator
Enough promote clay mineral to reach good dispersity in water, is conducive to the rheological characteristic for improving drilling fluid and completion fluid.
Show superhigh temperature ultrahigh-density water-base drilling fluid completion fluid of the present invention from the test result of test example 8 and 9
The high-temperature thickening characteristic of superhigh temperature ultrahigh-density water-base drilling fluid completion fluid can effectively be inhibited with polycarboxylate flow pattern regulator,
Superhigh temperature ultrahigh-density water-base drilling fluid completion fluid can be made to keep good rheological property and leak-off wall building property；In addition, this
The invention superhigh temperature ultrahigh-density water-base drilling fluid completion fluid is with polycarboxylate flow pattern regulator in superhigh temperature water-based drilling
251 DEG C of high temperature can be resisted in liquid.
The test result of compbined test example 1 to 9 shows superhigh temperature ultrahigh-density water-base drilling fluid completion of the present invention
It is complete that liquid with polycarboxylate flow pattern regulator can effectively reduce the superhigh temperature ultrahigh-density water-base drilling fluid after superhigh temperature aging
The viscosity and shear force of well liquid have the adjusting of good rheological characteristic and controlling to superhigh temperature ultrahigh-density water-base drilling fluid completion fluid
Can, the heat-resisting property in drilling fluid and completion fluid system up to 251 DEG C or more, while its also have good some surface active property and
Assist filtrate loss controllability.
Claims (10)
1. a kind of superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern regulator, which is characterized in that the stream
Type conditioning agent has the structure described in formula (I)：
The flow pattern regulator is by alkenyl benzene sulfonic acid salt, strongly hydrophilic cationic alkenyl quaternary ammonium salt and containing the allyl of backbone
The amphoteric ion polycarboxylate ternary with comb-type structure that base polyoxyethylene ether is generated through aqueous free radical polymerisation is total
Polymers；
In formula (I), x, y and z respectively represent anionic reactive monomer alkenyl benzene sulfonic acid salt, allyl polyethenoxy in structural formula
The molal quantity of ether polymeric monomer and cationoid reaction monomer alkenyl quaternary ammonium salt, m represent the allyl polyethenoxy containing backbone
The repeating segment number of polyoxy alkyl in ether.
2. polycarboxylate flow pattern regulator according to claim 1, which is characterized in that the flow pattern regulator molecule knot
In structure main chain, containing 7-20 structural unit, weight average molecular weight range is 6,500-12,500；Molar ratio x ﹕ y=(0.35-
0.85) ﹕ (0.55-1.55), the weight of alkenyl quaternary ammonium salt account for the 3- of alkenyl benzene sulfonic acid salt and allyl polyethenoxy ether total weight
15%, m=5-26.
3. polycarboxylate flow pattern regulator according to claim 1, which is characterized in that the allyl polyoxy second of backbone
The degree of unsaturation of alkene ether is more than 1.25mmol/g, hydroxyl value 85-155mgKOH/g.
4. polycarboxylate flow pattern regulator according to claim 1, which is characterized in that the flow pattern regulator molecule knot
In structure main chain, containing 10-15 structural unit, weight average molecular weight range is 7,000-10,000；Molar ratio x ﹕ y=(0.45-
0.65) ﹕ (0.75-1.25), the weight of alkenyl quaternary ammonium salt account for the 3- of alkenyl benzene sulfonic acid salt and allyl polyethenoxy ether total weight
8%, m=5-15.
5. polycarboxylate flow pattern regulator according to claim 1, which is characterized in that the flow pattern regulator molecule knot
In structure main chain, containing 7-12 structural unit, weight average molecular weight range is 10,000-12,000, molar ratio x ﹕ y=(0.48-
0.52) ﹕ (0.85-1.15), the weight of alkenyl quaternary ammonium salt account for the 5- of alkenyl benzene sulfonic acid salt and allyl polyethenoxy ether total weight
12%, m=12-15.
6. claim 1-5 any one of them superhigh temperature ultrahigh-density water-base drilling fluid completion fluid is adjusted with polycarboxylate flow pattern
The preparation method of agent, includes the following steps：
By reactant alkenyl benzene sulfonic acid salt, strongly hydrophilic cationic alkenyl quaternary ammonium salt and allyl polyoxy second containing backbone
Alkene ether is proportionally added in the reaction kettle equipped with solvent, and reaction kettle is poured into after catalyst is added in solvent fully dissolving
In, reactant mixed liquid concentration is adjusted with solvent, the mixing in reaction kettle is heated by heating water bath or steam-heated mode
Liquid maintains the reaction time, terminates reaction, is cooled to room temperature to get the poly- carboxylic of superhigh temperature ultrahigh-density water-base drilling fluid completion fluid
Hydrochlorate flow pattern regulator.
7. the preparation method of polycarboxylate flow pattern regulator according to claim 6, which is characterized in that the solvent is
Water；
The catalyst is the combination of persulfate and sodium hydrogensulfite；Alternatively, being water-soluble azo class initiator, amphipathic
Azo initiator alternative one or combination；
Preferably, the mass ratio of persulfate and sodium hydrogensulfite is 1：1.
8. the preparation method of polycarboxylate flow pattern regulator according to claim 6, which is characterized in that the persulfuric acid
Salt is potassium peroxydisulfate or ammonium persulfate；
The water-soluble azo class initiator is two isobutyl imidazoline hydrochloride of azo-bis-isobutyrate hydrochloride or azo, described
Amphipathic azo-initiator be azo isobutyl cyano formamide.
9. the preparation method of polycarboxylate flow pattern regulator according to claim 6, which is characterized in that reactant total weight
Account for the 30-60wt% for the total solution weight that reactant is formed with solvent；
When catalyst is the combination of persulfate and sodium hydrogensulfite, the addition of catalyst is the 0.5- of reactant total weight
4wt%；
When catalyst is water-soluble azo class initiator or/and amphipathic azo initiator, the addition of catalyst is reaction
The 0.1-2wt% of object total weight.
10. the preparation method of polycarboxylate flow pattern regulator according to claim 6, which is characterized in that reaction temperature is
60-95℃；Reaction time is 1.5 hours to 6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810560669.4A CN108641686B (en) | 2018-05-25 | 2018-05-25 | Flow pattern regulator for ultra-high temperature and ultra-high density water-based drilling fluid and completion fluid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810560669.4A CN108641686B (en) | 2018-05-25 | 2018-05-25 | Flow pattern regulator for ultra-high temperature and ultra-high density water-based drilling fluid and completion fluid and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108641686A true CN108641686A (en) | 2018-10-12 |
| CN108641686B CN108641686B (en) | 2021-01-01 |
Family
ID=63759332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810560669.4A Active CN108641686B (en) | 2018-05-25 | 2018-05-25 | Flow pattern regulator for ultra-high temperature and ultra-high density water-based drilling fluid and completion fluid and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108641686B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109762171A (en) * | 2019-01-28 | 2019-05-17 | 中石化石油工程技术服务有限公司 | Temperature sensitive polymer and preparation method thereof, drilling fluid flow pattern regulator composition, drilling fluid flow pattern regulator and preparation method thereof |
| CN110699058A (en) * | 2019-10-14 | 2020-01-17 | 中国石油化工股份有限公司 | Osmotic modified viscosity-reducing oil displacement agent for water-flooding thickened oil and preparation method thereof |
| CN115746311A (en) * | 2021-09-03 | 2023-03-07 | 中国石油天然气集团有限公司 | Environment-friendly drilling fluid cutting agent and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1149070A (en) * | 1995-08-01 | 1997-05-07 | 中国石油天然气总公司石油勘探开发科学研究院 | Amphoteric ionic polymer for drilling liquid and finishing liquid and its polymerization |
| CN1204652A (en) * | 1998-06-30 | 1999-01-13 | 中国石油天然气总公司石油勘探开发科学研究院 | Water-soluble macromolecular multi-component copolymer for oil field |
| WO2000060023A2 (en) * | 1999-04-07 | 2000-10-12 | Akzo Nobel N.V. | Quaternary nitrogen containing amphoteric water soluble polymers and their use in drilling fluids |
| CN1386769A (en) * | 2002-02-25 | 2002-12-25 | 中国石油天然气股份有限公司勘探开发研究院 | Amphoteric ion polymer and its preparing process and use |
| CN103254366A (en) * | 2013-05-15 | 2013-08-21 | 西南石油大学 | Preparation method and application of polyoxyethylene-based polymer filtrate reducer |
| CN103897117A (en) * | 2014-04-09 | 2014-07-02 | 中国海洋石油总公司 | Amphipathic quaternary ammonium inner salt as well as preparation method and application thereof |
| CN104558403A (en) * | 2013-10-28 | 2015-04-29 | 中国石油化工股份有限公司 | Cross-linked gradient swelling polymeric microsphere and preparation method thereof |
| CN105441056A (en) * | 2015-10-26 | 2016-03-30 | 中国石油集团西部钻探工程有限公司井下作业公司 | Polymer thickener for high-temperature-resistant water-based fracturing fluid and production method for polymer thickener |
| CN105646793A (en) * | 2014-12-02 | 2016-06-08 | 中国石油天然气集团公司 | Low hydration heat early strength cement fluid loss reducer for oil-gas well cementing and preparation method |
-
2018
- 2018-05-25 CN CN201810560669.4A patent/CN108641686B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1149070A (en) * | 1995-08-01 | 1997-05-07 | 中国石油天然气总公司石油勘探开发科学研究院 | Amphoteric ionic polymer for drilling liquid and finishing liquid and its polymerization |
| CN1204652A (en) * | 1998-06-30 | 1999-01-13 | 中国石油天然气总公司石油勘探开发科学研究院 | Water-soluble macromolecular multi-component copolymer for oil field |
| WO2000060023A2 (en) * | 1999-04-07 | 2000-10-12 | Akzo Nobel N.V. | Quaternary nitrogen containing amphoteric water soluble polymers and their use in drilling fluids |
| CN1386769A (en) * | 2002-02-25 | 2002-12-25 | 中国石油天然气股份有限公司勘探开发研究院 | Amphoteric ion polymer and its preparing process and use |
| CN103254366A (en) * | 2013-05-15 | 2013-08-21 | 西南石油大学 | Preparation method and application of polyoxyethylene-based polymer filtrate reducer |
| CN104558403A (en) * | 2013-10-28 | 2015-04-29 | 中国石油化工股份有限公司 | Cross-linked gradient swelling polymeric microsphere and preparation method thereof |
| CN103897117A (en) * | 2014-04-09 | 2014-07-02 | 中国海洋石油总公司 | Amphipathic quaternary ammonium inner salt as well as preparation method and application thereof |
| CN105646793A (en) * | 2014-12-02 | 2016-06-08 | 中国石油天然气集团公司 | Low hydration heat early strength cement fluid loss reducer for oil-gas well cementing and preparation method |
| CN105441056A (en) * | 2015-10-26 | 2016-03-30 | 中国石油集团西部钻探工程有限公司井下作业公司 | Polymer thickener for high-temperature-resistant water-based fracturing fluid and production method for polymer thickener |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109762171A (en) * | 2019-01-28 | 2019-05-17 | 中石化石油工程技术服务有限公司 | Temperature sensitive polymer and preparation method thereof, drilling fluid flow pattern regulator composition, drilling fluid flow pattern regulator and preparation method thereof |
| CN109762171B (en) * | 2019-01-28 | 2021-08-17 | 中石化石油工程技术服务有限公司 | Temperature-sensitive polymer and preparation method thereof, drilling fluid flow pattern regulator composition, drilling fluid flow pattern regulator and preparation method thereof |
| CN110699058A (en) * | 2019-10-14 | 2020-01-17 | 中国石油化工股份有限公司 | Osmotic modified viscosity-reducing oil displacement agent for water-flooding thickened oil and preparation method thereof |
| CN115746311A (en) * | 2021-09-03 | 2023-03-07 | 中国石油天然气集团有限公司 | Environment-friendly drilling fluid cutting agent and preparation method thereof |
| CN115746311B (en) * | 2021-09-03 | 2024-02-06 | 中国石油天然气集团有限公司 | Environment-friendly drilling fluid cutting agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108641686B (en) | 2021-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110205104A (en) | It is a kind of to block drilling fluid composition and preparation method thereof and its application by force | |
| CN101121880B (en) | Natural macromolecule modified starch profile control agent for oil field | |
| CN108641686A (en) | Superhigh temperature ultrahigh-density water-base drilling fluid completion fluid polycarboxylate flow pattern regulator and preparation method thereof | |
| CN102115514B (en) | Preparation method of acid liquor thickening agent | |
| CN110204667B (en) | Polymer modified carbon microsphere and preparation method and application thereof | |
| CN108715624B (en) | Ultrahigh-temperature-resistant composite-salt-resistant zwitterionic hydrophobically-associating polymer fluid loss agent and preparation method thereof | |
| CN107245329B (en) | Deep-well sulphonated polymer mud and preparation method thereof | |
| CN101824103A (en) | Polyacrylamide inorganic nano composite drilling fluid aid and preparation method thereof | |
| US9926482B1 (en) | Deep-well polysulfonate drilling fluid and preparation method thereof | |
| CN101928556A (en) | Five-membered copolymer fluid loss agent and preparation method thereof | |
| CN108753267A (en) | Drilling fluid and completion fluid anti-superhigh temperature anionic polymer fluid loss additive and preparation method thereof | |
| CN101092556A (en) | Oil-soluble cationic broad-spectrum temporary plugging agent for drilling fluid | |
| CN110066647B (en) | High-temperature-resistant air-stagnation plug for well drilling and preparation method thereof | |
| CN105802593A (en) | High-density water-based drilling fluid suitable for shale gas horizontal well | |
| CN109370548A (en) | One kind environment protection water-based drilling fluid resistant to high temperatures and preparation method thereof | |
| CN107629768A (en) | A kind of superhigh temperature resistant water-base drilling fluid | |
| CN102382242A (en) | Amphiphilic polymer and application thereof | |
| CN104762069A (en) | Preparation method and application of ultrahigh-density micro-powder weighting agent used for drilling fluid | |
| CN106147728A (en) | A kind of shale horizontal well water-base drilling fluid and preparation method thereof | |
| CN117143585B (en) | Emulsion type thickening agent and preparation method thereof | |
| CN110016324A (en) | A kind of high-temperature resistant water base drilling fluid extracting and cutting agent and preparation method thereof | |
| CN108997536A (en) | A kind of oil-well cement both sexes polycarboxylate dispersant and preparation method and application | |
| CN110724514B (en) | Nano high-temperature emulsified gelled acid and preparation method thereof | |
| CN112794953A (en) | Preparation method of branched polymer type acid thickener | |
| CN105112026B (en) | A kind of preparation method and purposes of drilling fluid ultra high density powder body heavy weight additive |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |