CN107245329A - Deep-well sulphonated polymer mud and preparation method thereof - Google Patents
Deep-well sulphonated polymer mud and preparation method thereof Download PDFInfo
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- CN107245329A CN107245329A CN201710565459.XA CN201710565459A CN107245329A CN 107245329 A CN107245329 A CN 107245329A CN 201710565459 A CN201710565459 A CN 201710565459A CN 107245329 A CN107245329 A CN 107245329A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/14—Clay-containing compositions
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/14—Clay-containing compositions
- C09K8/16—Clay-containing compositions characterised by the inorganic compounds other than clay
Abstract
The present invention relates to Drilling Fluid Technique for Deep field, disclose a kind of deep-well sulphonated polymer mud and preparation method thereof, the drilling fluid contains water, bentonite, sodium carbonate, sulfonated-pheno-formoldehyde resin, sulfonated lignite, halide salt, fluid loss additive, Sodium Polyacrylate, sodium hydrogensulfite and barite, and on the basis of the water of 100 parts by weight, bentonitic content is 3.5 5 parts by weight, the content of sodium carbonate is 0.15 0.35 parts by weight, the content of sulfonated-pheno-formoldehyde resin is 68 parts by weight, the content of sulfonated lignite is 68 parts by weight, the content of halide salt is 7.5 12 parts by weight, the content of fluid loss additive is 0.5 1.2 parts by weight, the content of Sodium Polyacrylate is 0.8 1.7 parts by weight, the content of sodium hydrogensulfite is 35 parts by weight, the content of barite is 250 300 parts by weight；The drilling fluid has that viscosity is low, the low premium properties of HTHP dehydrations.
Description
Technical field
The present invention relates to Drilling Fluid Technique for Deep field, and in particular to a kind of deep-well sulphonated polymer mud and preparation method thereof, especially
It is suitable for the drilling of deep-well, ultradeep well.
Background technology
In recent years, with increasing for exceptional well, ultradeep well and Holes of Complicated Wells quantity is bored, the probing of deep-well and ultradeep well is in state
An inside and outside importance for being counted as the drilling industry development from now on.Higher requirement is proposed to Drilling Fluid Technology, it is former
The need for some additive for drilling fluid can not fully meet Drilling Fluid Technology development.It is technical tired because well is deeper
It is difficult more, therefore, countries in the world all using drilling depth and speed as drilling technology important symbol.It was verified that deep-well, super
Drilling Fluid Technique for Deep quality has of crucial importance to deep-well, the success or failure of ultradeep well, drilling speed, Hydrocarbon Resource of The Deep Formation exploration and drilling cost
Meaning.From the point of view of current deep-well, ultra-deep well drilling liquid present Research, conventional deep-well, ultra-deep well drilling liquid have water base and oil
The major class of base two.Although oil base drilling fluid has the advantages that high temperature resistance, salt resistance with respect to water-base drilling fluid, is conducive to wellbore stability,
But compared with water base, the preparation cost of oil base drilling fluid it is high it is too many, the ecological environment near well site can be caused sternly when using
Ghost image rings, rate of penetration is typically relatively low.And water-base drilling fluid has：Cost is low, relatively simple, inorganic agent is safeguarded in configuration processing
The advantages of source is extensively and species is more, performance is easily controlled；So the country is based on water-base drilling fluid.For lacking for water-base drilling fluid
Point, it is drilling deep-well, the key technology of ultradeep well to develop a kind of functional and stable water-base drilling fluid, is also domestic and international bore
Where the difficult point for entering deep-well, ultradeep well.
Since being produced from junior three seventies sulphur drilling fluid, it is deep drilling to go so far as present Sulphonated polymer mud system
The inexorable trend of liquid development, most deep drilling liquid systems majorities or even most effects for all be unableing to do without polysulfonate, its
Action principle is mainly resistant to high temperature to based on the destruction of inorganic agent, relevant treatment agent is used as it to improve its temperature resistance ability
Based on prerequisite, saline-alkaline tolerance, temperature resistance ability is mainly based on resistance high temperature degradation effect.
However, the subject matter that Temperature Deep drilling fluid is present at present is as follows：
(1) high-temperature drilling liquid system dehydration wave making machine is difficult to control to：Since can not use the inorganic agent containing chromium with
Afterwards, increased dramatically after the HTHP dehydrations of Temperature Deep drilling fluid system, particularly salt-water drilling fluid, aging is universal phenomenon, temperature
Degree is higher, and salinity is more high more prominent.Therefore, the research and development of effective heat and salinity tolerance fluid loss additive (drop HTHP dehydrations) are current drilling fluids
The emphasis of technical field.It is also the key problem for setting up high temperature salt-water drilling fluid system.In addition, when low-density salt-water drilling fluid
After HTHP dehydrations and its heat endurance are solved, it is exacerbated to 1.50g/cm3More than, its HTHP dehydration substantially rises, and works as density
More than 2.0g/cm3After, then its HTHP dehydration is multiplied, so, it is necessary to spend a greater variety of fluid loss additives and further
Increase consumption to solve, so as to increase considerably the species and consumption of high temperature mud fluid loss additive, also limit pair
Temperature resistance, the approach of salt resistant filter loss reduction agent research and development.
(2) high density drilling fluid system rheological characteristic is difficult to control to：In order to ensure that there is high temperature mud relatively low HTHP to lose
Water, then need that the species and consumption of high temperature mud fluid loss additive is significantly increased so that drilling well liquid-based slurry viscosity is significantly in system
Increase, because the presence of a large amount of barite particles again increases considerably its viscosity after base slurry exacerbation, if soil amount in drilling fluid
Control is slightly improper, after high temperature ageing, then viscosity, shear force increase so as to cause mobility to be lost, and (high temperature is gelled and high temperature is consolidated
Change).And temperature resistance, the salt resistance thinner constantly researched and developed at present are acted on mainly for clay, in high density drilling fluid system
Middle clay content is limited, so as to be difficult to limited viscosity reduction.
At present, it is domestic that many is studied to temperature resistance salt resistant drilling, but high temperature high density DWSW liquid system is not complete
Reach a standard entirely, therefore, " 200 DEG C of saturated brines of temperature resistance, high density drilling fluid (≤2.30g/cm3) architectural study " it is classified as 13 oil
Gas country key special subjects tackling key problem task and research contents.
For deep-well high-density water-based drilling fluid, temperature is higher, and inorganic agent kind is more, and dosage is bigger, and system is got over
It is complicated；HTHP dehydrations after particularly 180 DEG C high temperature above agings to control below 15ml difficulty and must use many
Plant fluid loss agent and significantly increase dosage can just accomplish oneself into the common recognition of domestic and international mud circle.
Make that 180 DEG C of high temperature above salt-water drilling fluid inorganic agents are wide in variety, dosage is very big, and system is sufficiently complex, necessarily causes
Once performance shakiness is difficult maintenance processing in use.The pass of external drilling fluid temperature in use and inorganic agent (organic) consumption according to statistics
System, it is known that, when temperature is by increasing to 121 DEG C for 93 DEG C, inorganic agent consumption value added is 50%；When temperature by 121 DEG C increases to 148.9
DEG C when, inorganic agent consumption value added be 100%；When temperature is by increasing to 176.7 DEG C for 148.9 DEG C, inorganic agent consumption value added is
100%.
Equally, domestic high-temperature high-density salt-water drilling fluid equally has features above, 200 DEG C of high temperature is resisted according to statistics, highly dense
Spend (2.00g/cm3) generally there are ten kinds of organic agents in unsaturated salt water drilling fluid system, the only total consumption of fluid loss additive is just big
In 25%, the total consumption of system organic agent be even more exceed well over 30% situation it is very universal.
The content of the invention
The invention aims to the use inorganic agent kind for China's high-temperature high-density salt-water drilling fluid generally existing
Class is excessive, and dosage is excessive, and HTHP wave making machines and rheological characteristic are difficult to control to after drilling fluid aging, prepares cost and maintenance cost occupies height
Not the problem of not descending, and a kind of deep-well sulphonated polymer mud and preparation method thereof is provided, the deep-well sulphonated polymer mud solves high density
Drilling fluid viscosity is high, and HTHP dehydrations are big, and is difficult the problem of regulation and control.
In order to overcome the above mentioned problem that prior art is present there is provided a kind of deep-well sulphonated polymer mud, wherein, the deep-well gathers
Sulphur drilling fluid contains water, bentonite, sodium carbonate, sulfonated-pheno-formoldehyde resin, sulfonated lignite, halide salt, fluid loss additive, polyacrylic acid
Sodium, sodium hydrogensulfite and barite, and on the basis of the water of 100 parts by weight, the bentonitic content is 3.5-5 parts by weight,
The content of the sodium carbonate is 0.15-0.35 parts by weight, and the content of the sulfonated-pheno-formoldehyde resin is 6-8 parts by weight, the sulphur
The content for changing lignite is 6-8 parts by weight, and the content of the halide salt is 7.5-12 parts by weight, and the content of the fluid loss additive is
0.5-1.2 parts by weight, the content of the Sodium Polyacrylate is 0.8-1.7 parts by weight, and the content of the sodium hydrogensulfite is 3-5 weights
Part is measured, the content of the barite is 250-300 parts by weight.
Preferably, on the basis of the water of 100 parts by weight, the bentonitic content is 4-4.8 parts by weight, the sodium carbonate
Content be 0.2-0.24 parts by weight, the content of the sulfonated-pheno-formoldehyde resin is 6.5-7.8 parts by weight, the sulfonated lignite
Content is 6.5-7.8 parts by weight, and the content of the halide salt is 9-10.8 parts by weight, and the content of the fluid loss additive is 0.75-
0.9 parts by weight, the content of the Sodium Polyacrylate is 1.2-1.44 parts by weight, and the content of the sodium hydrogensulfite is 3.5-4.2
Parts by weight, the content of the barite is 260-290 parts by weight.
Preferably, the fluid loss additive is acrylamide/dimethyl diallyl ammonium chloride bipolymer and/or propylene
Acid amides/dimethyl diallyl ammonium chloride/2- acrylamide-2-methyl propane sulfonic terpolymers.
It is highly preferred that the fluid loss additive is acrylamide/dimethyl diallyl ammonium chloride bipolymer and propylene
The combination of acid amides/dimethyl diallyl ammonium chloride/2- acrylamide-2-methyl propane sulfonic terpolymers, and acrylamide/
Dimethyl diallyl ammonium chloride bipolymer and acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide -2- first
The weight ratio of base propane sulfonic acid terpolymer is (0.6-0.8)：1.
Preferably, the halide salt is sodium chloride and/or potassium chloride.
It is highly preferred that the halide salt is the combination of sodium chloride and potassium chloride, and the sodium chloride and the potassium chloride
Weight ratio is (0.6-0.96)：1.
Preferably, the barite is barite A and/or barite B, the barite A particle diameter are 50-70 microns,
The particle diameter of the barite B is 1-1.2 microns.
It is highly preferred that the barite is barite A and barite B combination, and the barite A and the barite
B weight ratio is (1-4)：1.
Preferably, the pH of the deep-well sulphonated polymer mud is 8-9, and the density of the deep-well sulphonated polymer mud is
2.30-2.45g/cm3。
Another aspect of the present invention additionally provides a kind of preparation method of deep-well sulphonated polymer mud, wherein, the preparation method bag
Include following steps：
(1) prehydration processing is carried out again after bentonite and sodium carbonate being carried out into the first mixing；
(2) mixture for obtaining the processing of step (1) prehydration is mixed with fluid loss additive and Sodium Polyacrylate progress second,
Then the 3rd is carried out with halide salt and sodium hydrogensulfite again to mix；
(3) mixture for obtaining step (2) is mixed with sulfonated-pheno-formoldehyde resin and sulfonated lignite progress the 4th；
Wherein, on the basis of the water of 100 parts by weight, the bentonitic consumption is 3.5-5 parts by weight, the sodium carbonate
Content is 0.15-0.35 parts by weight, and the consumption of the sulfonated-pheno-formoldehyde resin is 6-8 parts by weight, the consumption of the sulfonated lignite
For 6-8 parts by weight, the consumption of the halide salt is 7.5-12 parts by weight, and the consumption of the fluid loss additive is 0.5-1.2 parts by weight,
The consumption of the Sodium Polyacrylate is 0.8-1.7 parts by weight, and the content of the sodium hydrogensulfite is 3-5 parts by weight, the heavy crystalline substance
The consumption of stone is 250-300 parts by weight.
Preferably, on the basis of the water of 100 parts by weight, the bentonitic consumption is 4-4.8 parts by weight, the sodium carbonate
Content be 0.2-0.24 parts by weight, the consumption of the sulfonated-pheno-formoldehyde resin is 6.5-7.8 parts by weight, the sulfonated lignite
Consumption is 6.5-7.8 parts by weight, and the consumption of the halide salt is 9-10.8 parts by weight, and the consumption of the fluid loss additive is 0.75-
0.9 parts by weight, the consumption of the Sodium Polyacrylate is 1.2-1.44 parts by weight, and the content of the sodium hydrogensulfite is 3.5-4.2
Parts by weight, the consumption of the barite is 260-290 parts by weight.
Preferably, the fluid loss additive is acrylamide/dimethyl diallyl ammonium chloride bipolymer and/or propylene
Acid amides/dimethyl diallyl ammonium chloride/2- acrylamide-2-methyl propane sulfonic terpolymers.
It is highly preferred that the fluid loss additive is acrylamide/dimethyl diallyl ammonium chloride bipolymer and propylene
The combination of acid amides/dimethyl diallyl ammonium chloride/2- acrylamide-2-methyl propane sulfonic terpolymers, and acrylamide/
Dimethyl diallyl ammonium chloride bipolymer and acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide -2- first
The weight ratio of base propane sulfonic acid terpolymer is (0.6-0.8)：1.
Preferably, the halide salt is sodium chloride and/or potassium chloride.
It is highly preferred that the halide salt is the combination of sodium chloride and potassium chloride, and the sodium chloride and the potassium chloride
Weight ratio is (0.6-0.96)：1.
Preferably, the barite is barite A and/or barite B, the barite A particle diameter are 50-70 microns,
The particle diameter of the barite B is 1-1.2 microns.
It is highly preferred that the barite is barite A and barite B combination, and the barite A and the barite
B weight ratio is (1-4)：1.
Preferably, in step (1), the condition of first mixing includes：Temperature is 50-70 DEG C, and stir speed (S.S.) is
550-650r/min, the time is 30-45 minutes；The condition of the prehydration processing includes：Temperature is 50-70 DEG C, stir speed (S.S.)
For 550-650r/min, the time is 23-25 hours；
Wherein, in step (2), the condition of second mixing includes：Temperature is 60-70 DEG C, and stir speed (S.S.) is 950-
1000r/min, the time is 50-70 minutes；And the condition of the 3rd mixing includes：Temperature is 60-70 DEG C, and stir speed (S.S.) is
550-650r/min, the time is 50-70 minutes；
Wherein, in step (3), the condition of the 4th mixing includes：Temperature is 60-70 DEG C, and stir speed (S.S.) is 550-
650r/min, the time is 30-40 minutes.
Another aspect of the present invention additionally provides a kind of deep-well sulphonated polymer mud prepared by above-mentioned preparation method.
Preferably, the pH of the deep-well sulphonated polymer mud is 8-9, and the density of the deep-well sulphonated polymer mud is
2.30-2.45g/cm3。
By above-mentioned technical proposal, the deep-well sulphonated polymer mud that the present invention is provided act as base using inorganic agent high-temperature cross-linking
Plinth, NaHSO3As the appropriately crosslinked initiator of high temperature, while compounding the blanc fixe of different-grain diameter to solve high density drilling fluid
Viscosity is high, and HTHP dehydrations are big, and is difficult the problem of regulation and control, the function admirable for the heat and salinity tolerance high density drilling fluid developed
(HTHP dehydrations are low, and rheological characteristic is good) and inorganic agent species is few, and total consumption is greatly reduced, and the deep-well sulphonated polymer mud after aging
System has viscosity low (apparent viscosity AV is 61-63mPa ﹒ s, and plastic viscosity P V is 46-47m Pa ﹒ s), HTHP (HTHPs
Filtrate reducing amount) the rare premium properties such as dehydration low (≤15ml).
Embodiment
The end points and any value of disclosed scope are not limited to the accurate scope or value herein, these scopes or
Value should be understood to comprising the value close to these scopes or value.For number range, between the endpoint value of each scope, respectively
It can be combined with each other between the endpoint value of individual scope and single point value, and individually between point value and obtain one or more
New number range, these number ranges should be considered as specific open herein.
In the present invention, according to GB3102.3-1993《The amount and unit of mechanics》In regulation, described term is " apparent
Viscosity ", " plastic viscosity " and " yield value " are defined as follows：
Apparent viscosity：Also known as effective viscosity or apparent viscosity, be drilling fluid under a certain velocity gradient, shear stress and speed
The ratio of gradient, is represented with " AV ", and unit is m Pa ﹒ s (Hao Pa ﹒ seconds).
Plastic viscosity：Drilling fluid in laminar flow, in drilling fluid between solid particle, between solid particle and fluid molecule,
Various internal friction sums are referred to as the plastic viscosity of drilling fluid between fluid molecule, are represented with " PV ", and unit is m Pa ﹒ s (millis
Pa ﹒ seconds) or cP (centipoise), 1m Pa ﹒ s=1cP.
Yield value：The dynamic shearing stress reflection of drilling fluid be drilling fluid in laminar flow, between clay particle and high polymer point
The power for the network structure ability that the size of the Interaction Force of son, i.e. drilling fluid are internally formed, with " YP " or " T0" represent,
Unit is Pa (handkerchief).
Gel strength：Reflect drilling fluid in inactive state, the intensity of internal gel networks.Gel strength is with Greece
Alphabetical θ represents that the legal unit of measurement is handkerchief (Pa).The size of gel strength is decided by unit volume the number of structural chain in fluid
With the intensity of single structure chain.Internal fluid structure sequence gradually tends to stable, and structural development tends to reach perfection, and gel strength also increases
Greatly.Therefore, the speed that gel strength increases is weighed, regulation gel strength must be surveyed twice, by API (American Petroleum Institute (API)) standard gauge
Surely it is the gel strength of measurement static 10 seconds and 10 points, is referred to as gel initial and 10-minute gel strength.The size of gel strength, has reacted suspension
The ability of rock dust.Particularly weighted mud, the density of heavy weight additive barite etc. is big, once slush pump is stopped, flushing liquor is followed
When ring is interrupted, thick cutting grain sinks and causes underground drilling accident in hole quickly in mud.Therefore gel strength should keep certain
Numerical value.
The invention provides a kind of deep-well sulphonated polymer mud, wherein, the deep-well sulphonated polymer mud contains water, bentonite, carbon
Sour sodium, sulfonated-pheno-formoldehyde resin, sulfonated lignite, halide salt, fluid loss additive, Sodium Polyacrylate, sodium hydrogensulfite and barite, and
On the basis of the water of 100 parts by weight, the bentonitic content can be 3.5-5 parts by weight, and the content of the sodium carbonate is
0.15-0.35 parts by weight, the content of the sulfonated-pheno-formoldehyde resin can be 6-8 parts by weight, and the content of the sulfonated lignite can
Think 6-8 parts by weight, the content of the halide salt can be 7.5-12 parts by weight, and the content of the fluid loss additive can be 0.5-
1.2 parts by weight, the content of the Sodium Polyacrylate can be 0.8-1.7 parts by weight, and the content of the sodium hydrogensulfite is 3-5 weights
Part is measured, the content of the barite can be 250-300 parts by weight.
According to the present invention, described deep-well sulphonated polymer mud, as long as containing water, bentonite, sodium carbonate, sulphur methyl phenolic aldehyde tree
Fat, sulfonated lignite, halide salt, fluid loss additive, Sodium Polyacrylate, sodium hydrogensulfite and barite, and meet aforementioned proportion pass
System can realize the purpose of the present invention to a certain extent.
The present inventor has found under study for action, although as long as containing water, bentonite, sodium carbonate, sulphur methyl phenolic aldehyde tree
Fat, sulfonated lignite, halide salt, fluid loss additive, Sodium Polyacrylate, sodium hydrogensulfite and barite and meet aforementioned proportion relation
The purpose of the present invention can be achieved, but under preferable case, on the basis of the water of 100 parts by weight, the bentonitic content is 4-
4.8 parts by weight, the content of the sodium carbonate is 0.2-0.24 parts by weight, and the content of the sulfonated-pheno-formoldehyde resin is 6.5-7.8
Parts by weight, the content of the sulfonated lignite is 6.5-7.8 parts by weight, and the content of the halide salt is 9-10.8 parts by weight, described
The content of fluid loss additive is 0.75-0.9 parts by weight, and the content of the Sodium Polyacrylate is 1.2-1.44 parts by weight, the sulfurous
The content of sour hydrogen sodium is 3.5-4.2 parts by weight, and the content of the barite is 260-290 parts by weight, and effect is more preferable.
According to the present invention, the bentonite is not particularly limited as with pulp material, can be selected for the conventional of this area
Select, for example, can be drilling fluid bentonite, its main component be the clay mineral that 85 weight % are no less than containing montmorillonite.
According to the present invention, the water is not particularly limited, and can be running water (clear water).
According to the present invention, the code name of the sulfonated-pheno-formoldehyde resin is SMP- III, is commercially available, molecular weight is 20-
500000.
According to the present invention, the code name of the sulfonated lignite (thinner) is SMC.
According to the present invention, the molecular formula of the Sodium Polyacrylate (thinner) is (C3H3NaO2)n, it is commercially available, its
Number-average molecular weight is 200,000-40 ten thousand.
The sodium carbonate and the sodium hydrogensulfite are not particularly limited, and can be commercial products.
According to the present invention, the fluid loss additive can be acrylamide/dimethyl diallyl ammonium chloride bipolymer
And/or acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide-2-methyl propane sulfonic terpolymers；Preferably,
The fluid loss additive is acrylamide/dimethyl diallyl ammonium chloride bipolymer and the allyl of acrylamide/dimethyl two
The combination of ammonium chloride/2- acrylamide-2-methyl propane sulfonic terpolymers, and acrylamide/dimethyl diallyl chlorine
Change ammonium bipolymer and acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide-2-methyl propane sulfonic ternary polymerizations
The weight ratio of thing can be (0.6-0.8)：1；Preferably (0.65-0.75)：1；In addition, the acrylamide/dimethyl diene
Propyl ammonium chloride bipolymer (AM/DMDAAC) and the acrylamide/dimethyl diallyl ammonium chloride/2- acryloyls
Amine -2- methyl propane sulfonic acids terpolymer (AM/DMDAAC/AMPS) can obtain for inventor oneself is synthetically prepared, select water
Prepared by Solution Free Radical copolymerization, its synthetic method is as described below.
According to the present invention, the synthetic method of the acrylamide/dimethyl diallyl ammonium chloride bipolymer includes
Following steps：
(1) AM, DMDAAC and deionized water are mixed；
(2) mixture for obtaining step (1) is mixed with initiator；
(3) the product ethanolic extraction that obtains step (2), shred and filter after place is dried in vacuum drying oven
Reason.
Wherein, in step (1), the condition of the mixing can be：Temperature is 49-51 DEG C, and stir speed (S.S.) is not specific
Limit, can be the conventional selection of those skilled in the art, for example, stir speed (S.S.) can be 280-320 revs/min, and stir
Letting nitrogen in and deoxidizing processing is carried out while mixing solution, the time can be 19-21 minutes；
Wherein, in step (2), the initiator can be redox system, for example, can be the double (2- of 2,2 ' azepines
Imidazoline) dihydrochloride (VA-044), 2,2 '-azo diisobutyl amidine dihydrochloride (AIBA-2HCl)-sodium hydrogensulfite, mistake
One or more in ammonium sulfate-sodium hydrogensulfite, potassium peroxydisulfate-sodium hydrogensulfite, preferably ammonium persulfate-bisulfite
Sodium, and the initiator after letting nitrogen in and deoxidizing processing terminates simultaneously mix with AM and DMDAAC, furthermore it is preferred that it is described initiation
Agent can be added dropwise with 0.3-05mL/min drop rate；And the condition of the mixing can be：Temperature is 49-51 DEG C, when
Between be 7.5-8.5 hours；
Wherein, in step (3), the condition of the drying process can be：Temperature is 49-51 DEG C, and the time is that 23-25 is small
When, and white powder is being ground to form after drying process；
Wherein, the intrinsic viscosity of the acrylamide/dimethyl diallyl ammonium chloride bipolymer is 370-380mL/
G, preferably 375-378mL/g；And
On the basis of the gross weight of the acrylamide/dimethyl diallyl ammonium chloride bipolymer, the acryloyl
The content of amine is 75-85 weight %, and the content of the dimethyl diallyl ammonium chloride is 15-25 weight %；
Preferably, it is described on the basis of the gross weight of the acrylamide/dimethyl diallyl ammonium chloride bipolymer
The content of acrylamide is 78-82 weight %, and the content of the dimethyl diallyl ammonium chloride is 18-22 weight %.
By changing the consumption of two kinds of monomers of AM and DMDAAC and initiator, the propylene of different molecular structures is resulted in
Acid amides/dimethyl diallyl ammonium chloride bipolymer (AM/DMDAAC), wherein, table 1 is binary made from different initiators
The performance of copolymer.
Table 1
| Initiation system | Reaction temperature | Cationic degree | Intrinsic viscosity | Yield |
| VA-044 | 45℃ | 7.73 | 281.93 | 53.87 |
| AIBA-2HCl- sodium hydrogensulfites | 60℃ | 9.78 | 430.14 | 64.35 |
| Ammonium persulfate-sodium bisulfite | 50℃ | 10.29 | 345.65 | 84.26 |
| Potassium peroxydisulfate-sodium hydrogensulfite | 50℃ | 10.06 | 338.47 | 73.44 |
Note：The unit of cationic degree is (mol%), and the unit of intrinsic viscosity is (mL ﹒ g-1), the unit of yield is (%).
According to the present invention, the acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide-2-methyl propane sulfonics
The synthetic method of terpolymer (AM/DMDAAC/AMPS) comprises the following steps：
(1) AMPS and deionized water are mixed；
(2) mixture of step (1) is mixed with AM, DMDAAC；
(3) mixture for obtaining step (2) is mixed with initiator；
(4) the product ethanolic extraction that obtains step (3), shred and filter after place is dried in vacuum drying oven
Reason.
Wherein, in step (1), the condition of the mixing can be：Temperature is 29-31 DEG C, and stir speed (S.S.) is not specific
Limit, can be the conventional selection of those skilled in the art, for example, can be 180-220 revs/min；And this can be mixed
The pH value for closing solution is adjusted to neutrality, can adjust pH value from certain density NaOH solution；
Wherein, in step (2), the condition of the mixing can be：Temperature is 49-51 DEG C, and stir speed (S.S.) is not specific
Limit, can be the conventional selection of those skilled in the art, and letting nitrogen in and deoxidizing processing is carried out while agitating solution, the time can
Think 19-21 minutes；
Wherein, in step (3), the initiator can be redox system, for example, can be " ammonium persulfate-Asia
Niter cake " and " potassium peroxydisulfate-sodium hydrogensulfite ", and " ammonium persulfate-sodium bisulfite " and " potassium peroxydisulfate-bisulfite
The weight ratio of sodium " is 1：1, and the initiator after letting nitrogen in and deoxidizing processing terminates simultaneously mixed with AMPS, AM and DMDAAC；With
And the condition of the mixing can be：Temperature is 49-51 DEG C, and the time is 7.5-8.5 hours；Furthermore it is preferred that the initiator
It can be added drop-wise to 2.5-3.5mL/min drop rate in the mixture of step (2) and mixed.
Wherein, in step (4), the condition of the drying process can be：Temperature is 49-51 DEG C, and the time is that 23-25 is small
When, and white powder is being ground to form after drying process；Wherein, the acrylamide/dimethyl diallyl ammonium chloride/2- propylene
The intrinsic viscosity of acid amides -2- methyl propane sulfonic acid terpolymers is 340-350mL/g, preferably 345-348mL/g；And
With the acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide-2-methyl propane sulfonic terpolymers
On the basis of gross weight, the content of the acrylamide is 50-65 weight %, and the content of the dimethyl diallyl ammonium chloride is
12-22 weight %, the content of the 2- acrylamide-2-methyl propane sulfonics is 13-38 weight %；
Preferably, with the acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide-2-methyl propane sulfonic ternarys
On the basis of the gross weight of copolymer, the content of the acrylamide is 55-60 weight %, the dimethyl diallyl ammonium chloride
Content be 15-20 weight %, the contents of the 2- acrylamide-2-methyl propane sulfonics is 20-30 weight %.
By changing the consumption of two kinds of monomers of AMPS, AM and DMDAAC and initiator, different molecular structures are resulted in
Acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide-2-methyl propane sulfonic terpolymers (AM/DMDAAC/
AMPS)。
According to the present invention, the halide salt can be sodium chloride and/or potassium chloride；Preferably, the halide salt is chlorination
The combination of sodium and potassium chloride, and the weight ratio of the sodium chloride and the potassium chloride can be (0.6-0.96)：1, be preferably
(0.7-0.8)：1.
According to the present invention, the barite (heavy weight additive) can be barite A and/or barite B, the barite A's
Particle diameter can be 50-70 microns, and the particle diameter of the barite B can be 1-1.2 microns；Preferably, the barite is attached most importance to crystalline substance
Stone A and barite B combination, and the barite A and barite B weight ratio can be (1-4)：1, be preferably
(1.5-4)：1；In addition, in the present invention, the barite A and the barite B main component are BaSO4, that is to say, that
The barite A can be the BaSO of 50-70 microns of particle diameter4, the barite B can be the BaSO of 1-1.2 microns of particle diameter4。
According to the present invention, the pH of the deep-well sulphonated polymer mud can be 8-9, it is preferable that the deep-well sulphonated polymer mud
PH be 8.4-8.6., can be with and in the present invention, the reagent for adjusting the pH of the deep-well sulphonated polymer mud is not particularly limited
For the conventional selection of this area, if for example, the pH of the deep-well sulphonated polymer mud is heightened, sodium hydroxide, carbon can be selected
One or more in sour hydrogen sodium and calcium hydroxide are adjusted, if the pH of the deep-well sulphonated polymer mud turned down, can be with
It is adjusted from the hydrochloric acid or acid salt of dilution.
According to the present invention, the density of the deep-well sulphonated polymer mud can be 2.30-2.45g/cm3, preferably 2.35-
2.42g/cm3, in the present invention it is possible to by density increase of total consumption by the deep-well sulphonated polymer mud for adjusting barite.
Another aspect of the present invention additionally provides a kind of preparation method of deep-well sulphonated polymer mud, wherein, the preparation method bag
Include following steps：
(1) prehydration processing is carried out again after bentonite and sodium carbonate being carried out into the first mixing；
(2) mixture for obtaining the processing of step (1) prehydration is mixed with fluid loss additive and Sodium Polyacrylate progress second,
Then the 3rd is carried out with halide salt and sodium hydrogensulfite again to mix；
(3) mixture for obtaining step (2) is mixed with sulfonated-pheno-formoldehyde resin and sulfonated lignite progress the 4th；
Wherein, on the basis of the water of 100 parts by weight, the bentonitic consumption can be 3.5-5 parts by weight, the carbonic acid
The content of sodium can be 0.15-0.35 parts by weight, and the consumption of the sulfonated-pheno-formoldehyde resin can be 6-8 parts by weight, the sulphur
The consumption for changing lignite can be 6-8 parts by weight, and the consumption of the halide salt can be 7.5-12 parts by weight, the fluid loss additive
Consumption can be 0.5-1.2 parts by weight, and the consumption of the Sodium Polyacrylate can be 0.8-1.7 parts by weight, the bisulfite
The content of sodium can be 3-5 parts by weight, and the consumption of the barite can be 250-300 parts by weight.
According to the present invention, in the preparation process of described deep-well sulphonated polymer mud, as long as by bentonite and the pre- water of sodium carbonate
Change is handled, and sulfonated-pheno-formoldehyde resin, sulfonated lignite, halide salt, fluid loss additive, Sodium Polyacrylate, sodium hydrogensulfite and weight is brilliant
Stone sequentially mix with the mixture after prehydration processing, and is met aforementioned proportion relation and can be realized to a certain extent
The purpose of invention.
The present inventor has found under study for action, although as long as bentonite and the processing of sodium carbonate prehydration, by sulphur methyl
Phenolic resin, sulfonated lignite, halide salt, fluid loss additive, Sodium Polyacrylate, sodium hydrogensulfite and barite sequentially with prehydration
Mixture mixing after processing, and meet the i.e. achievable purpose of the present invention of aforementioned proportion relation, but under preferable case, with
On the basis of the water of 100 parts by weight, the bentonitic consumption is 4-4.8 parts by weight, and the content of the sodium carbonate is 0.2-0.24
Parts by weight, the consumption of the sulfonated-pheno-formoldehyde resin is 6.5-7.8 parts by weight, and the consumption of the sulfonated lignite is 6.5-7.8 weights
Part is measured, the consumption of the halide salt is 9-10.8 parts by weight, and the consumption of the fluid loss additive is 0.75-0.9 parts by weight, described poly-
The consumption of PAA is 1.2-1.44 parts by weight, and the content of the sodium hydrogensulfite is 3.5-4.2 parts by weight, the barite
Consumption be 260-290 parts by weight, effect is more preferable.
According to the present invention, the bentonite is not particularly limited as with pulp material, can be selected for the conventional of this area
Select, for example, can be drilling fluid bentonite, its main component be the clay mineral that 85 weight % are no less than containing montmorillonite.
According to the present invention, the water is not particularly limited, and can be running water (clear water).
According to the present invention, the code name of the sulfonated-pheno-formoldehyde resin is SMP- III, is commercially available, molecular weight is 20-
500000.
According to the present invention, the code name of the sulfonated lignite (thinner) is SMC.
According to the present invention, the molecular formula of the Sodium Polyacrylate (thinner) is (C3H3NaO2)n, it is commercially available, its
Mean molecule quantity is 200,000-40 ten thousand.
According to the present invention, the sodium carbonate and the sodium hydrogensulfite are not particularly limited, and can be commercial products.
According to the present invention, the fluid loss additive can be acrylamide/dimethyl diallyl ammonium chloride bipolymer
And/or acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide-2-methyl propane sulfonic terpolymers；Preferably,
The fluid loss additive is acrylamide/dimethyl diallyl ammonium chloride bipolymer and the allyl of acrylamide/dimethyl two
The combination of ammonium chloride/2- acrylamide-2-methyl propane sulfonic terpolymers, and acrylamide/dimethyl diallyl chlorine
Change ammonium bipolymer and acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide-2-methyl propane sulfonic ternary polymerizations
The weight ratio of thing can be (0.6-0.8)：1；Preferably (0.65-0.75)：1；In addition, the acrylamide/dimethyl diene
Propyl ammonium chloride bipolymer (AM/DMDAAC) and the acrylamide/dimethyl diallyl ammonium chloride/2- acryloyls
Amine -2- methyl propane sulfonic acids terpolymer (AM/DMDAAC/AMPS) can be obtained for inventor oneself is synthetically prepared, and it is synthesized
Method is as described above, will not be repeated here.
According to the present invention, the halide salt can be sodium chloride and/or potassium chloride；Preferably, the halide salt is chlorination
The combination of sodium and potassium chloride, and the weight ratio of the sodium chloride and the potassium chloride can be (0.6-0.96)：1, be preferably
(0.7-0.8)：1.
According to the present invention, the barite (heavy weight additive) can be barite A and/or barite B, the barite A's
Particle diameter can be 50-70 microns, and the particle diameter of the barite B can be 1-1.2 microns；Preferably, the barite is attached most importance to crystalline substance
Stone A and barite B combination, and the barite A and barite B weight ratio can be (1-4)：1, be preferably
(1.5-4)：1；In addition, in the present invention, the barite A and the barite B main component are BaSO4, that is to say, that
The barite A can be the BaSO of 50-70 microns of particle diameter4, the barite B can be the BaSO of 1-1.2 microns of particle diameter4。
According to the present invention, in step (1), the condition of first mixing includes：Temperature is 50-70 DEG C, stir speed (S.S.)
For 550-650r/min, the time is 30-45 minutes；The condition of the prehydration processing includes：Temperature is 50-70 DEG C, stirring speed
Rate is 550-650r/min, and the time is 23-25 hours；
Wherein, in step (2), the condition of second mixing includes：Temperature is 60-70 DEG C, and stir speed (S.S.) is 950-
1000r/min, the time is 50-70 minutes；And the condition of the 3rd mixing includes：Temperature is 60-70 DEG C, and stir speed (S.S.) is
550-650r/min, the time is 50-70 minutes；
Wherein, in step (3), the condition of the 4th mixing includes：Temperature is 60-70 DEG C, and stir speed (S.S.) is 550-
650r/min, the time is 30-40 minutes.
Preferably, in step (1), the condition of first mixing includes：Temperature is 55-65 DEG C, and stir speed (S.S.) is
580-620r/min, the time is 30-35 minutes；The condition of the prehydration processing includes：Temperature is 55-65 DEG C, stir speed (S.S.)
For 580-620r/min, the time is 23.5-24.5 hours；
Preferably, in step (2), the condition of second mixing includes：Temperature is 62-68 DEG C, and stir speed (S.S.) is
980-1000r/min, the time is 55-65 minutes；And the condition of the 3rd mixing includes：Temperature is 62-68 DEG C, stirring speed
Rate is 580-620r/min, and the time is 55-65 minutes；
Preferably, in step (3), the condition of the 4th mixing includes：Temperature is 62-68 DEG C, and stir speed (S.S.) is
580-620r/min, the time is 30-35 minutes.
Another aspect of the present invention additionally provides a kind of deep-well sulphonated polymer mud prepared by above-mentioned preparation method.
According to the present invention, the pH of the deep-well sulphonated polymer mud can be 8-9, it is preferable that the deep-well sulphonated polymer mud
PH be 8.4-8.6., can be with and in the present invention, the reagent for adjusting the pH of the deep-well sulphonated polymer mud is not particularly limited
For the conventional selection of this area, if for example, the pH of the deep-well sulphonated polymer mud is heightened, sodium hydroxide, carbon can be selected
One or more in sour hydrogen sodium and calcium hydroxide are adjusted, if the pH of the deep-well sulphonated polymer mud turned down, can be with
It is adjusted from the hydrochloric acid or acid salt of dilution.
According to the present invention, the density of the deep-well sulphonated polymer mud can be 2.30-2.45g/cm3, preferably 2.35-
2.42g/cm3, in the present invention it is possible to it is of the invention by being increased the density of the deep-well sulphonated polymer mud from barite
Inventor has found that the ratio of the weight ratio of the barite A and the barite B consumption is 4 under study for action:1 to 3:2
When the deep-well sulphonated polymer mud can be exacerbated to 2.30-2.45g/cm3。
According to one kind of the present invention preferred embodiment, the preparation method of the deep-well sulphonated polymer mud includes following step
Suddenly：
(1) first, bentonite and water are 50-70 DEG C in temperature and under 550-650r/min stirring condition stir 5-15
Minute；Then, by bentonite mixed again with sodium carbonate with the mixture of water and temperature be 50-70 DEG C 550-650r/min's
Stirred 25-35 minutes under stirring condition；Then, then carry out prehydration processing obtain the soil paste after prehydration, wherein, the pre- water
Changing the condition of processing includes：Temperature can be 50-70 DEG C, and the time can be 23-25 hours；Preferably, temperature is 55-65 DEG C,
Time is 23.5-24.5 hours；
(2) soil paste after prehydration is heated to 60-70 DEG C, by the soil paste after the prehydration after heating and fluid loss additive and
Sodium Polyacrylate is mixed and stirred 50-70 minutes under 950-1000r/min stirring condition；Then, then be mixed thing with
Sodium chloride, potassium chloride and sodium hydrogensulfite are mixed and stirred in the case where temperature is 60-70 DEG C under 550-650r/min stirring condition
Mix 50-70 minutes, obtained mixture starches standby as base；
(3) above-mentioned base slurry is mixed with sulfonated-pheno-formoldehyde resin and sulfonated lignite and in the case where temperature is 60-70 DEG C in 550-
Stirred 30-40 minutes under 650r/min stirring condition.
The present invention will be described in detail by way of examples below.
The measure of the rate of recovery is with reference to petroleum industry standard SY-T5613-2000 mud shale physicochemical property test methods；
Bentonite (montmorillonite) is purchased from Xinjiang Zhong Feixiazi streets bentonite Co., Ltd；
Sulfonated-pheno-formoldehyde resin is drilling fluid sulphur methyl phenolic aldehyde tree purchased from the generous synthesis Chemical Co., Ltd. trade mark in Chongqing
Fat SMP-III pulvis；
Sulfonated lignite is sulfonated lignite SMC purchased from the Chengdu Chuan Feng Chemical Engineerings Co., Ltd trade mark；
Halide salt, fluid loss additive, Sodium Polyacrylate are purchased from the imperial chemical reagent factory of section；
The raw materials such as barite are purchased from Guizhou millimicro powder industry Co., Ltd (commercially available product of ultra-fine barium sulfate).
Acrylamide, dimethyl diallyl ammonium chloride, 2- acrylamide-2-methyl propane sulfonics are purchased from section's dragon chemistry examination
Agent factory.
Preparation example 1
This preparation example is used to illustrate the acrylamide/dimethyl diallyl ammonium chloride bipolymer (AM/
DMDAAC synthesis).
(1) magnetic stir bar is put into three-necked flask, thermometer is inserted, is placed in thermostat water bath and is stirred continuously, water
Temperature is set as 50 DEG C, and stir speed (S.S.) is 300 revs/min；
(2) 20 grams of AM monomers are weighed, are added with after deionized water dissolving in three-necked flask, then weigh 20 grams of DMDAAC solution
It is added in three-necked flask, then, letting nitrogen in and deoxidizing processing is carried out while agitating solution, the time of letting nitrogen in and deoxidizing processing is 20
Minute；
(3) using AM and DMDAAC monomer gross mass as radix, weigh 0.048 gram of initiator (initiator be ammonium persulfate-
Sodium hydrogensulfite), the aqueous solution is configured to deionized water, three-necked flask is added dropwise to after deoxygenation terminates, wherein, drop rate is
0.5mL/min, stirring is well mixed solution, and reaction is carried out 8 hours；
(4) product is transferred in flask, with ethanolic extraction 2 times, shredded, in being done at 50 DEG C in vacuum drying oven after filtering
Dry 24 hours, it is then ground to white powder.
As a result：The white powder synthesized is acrylamide/dimethyl diallyl ammonium chloride bipolymer (AM/
DMDAAC), its intrinsic viscosity 376.24mL/g, and on the basis of the gross weight of the bipolymer, the content of acrylamide is
79.8 weight %, the content of dimethyl diallyl ammonium chloride is 20.2 weight %.
Preparation example 2
This preparation example is used to illustrate the acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide -2- methyl-props
The synthesis of sulfonic acid terpolymer (AM/DMDAAC/AMPS).
(1) 20 grams of AMPS are weighed, after deionized water dissolving, is transferred in three-necked flask, magnetic is put into three-necked flask
Power stirrer, is plugged after thermometer, is placed in thermostat water bath and is stirred continuously, and water temperature is set as 30 DEG C, and stir speed (S.S.) is
200 revs/min；
(2) certain density NaOH solution is prepared, adds in three-necked flask, the pH value of solution is adjusted to neutrality；
(3) 27 grams of AM monomers are weighed, are added with after deionized water dissolving in three-necked flask, then weigh 25 grams of DMDAAC solution
It is added in three-necked flask, then, letting nitrogen in and deoxidizing processing is carried out while agitating solution, the time of letting nitrogen in and deoxidizing processing is 20
Minute；
(4) weighing 0.13 gram of initiator, (initiator is " ammonium persulfate-sodium bisulfite " and " potassium peroxydisulfate-bisulfite
Sodium "), the aqueous solution is configured to deionized water, is added dropwise to after deoxygenation terminates in three-necked flask, drop rate is 3mL/min, and
Temperature is risen to 50 DEG C, stirring is well mixed solution, and reaction is carried out 8 hours；
(5) product is transferred in flask, with ethanolic extraction 2 times, shredded, in being done at 50 DEG C in vacuum drying oven after filtering
Dry 24 hours, it is then ground to white powder.
As a result：The white powder synthesized is acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide -2- first
Base propane sulfonic acid terpolymer (AM/DMDAAC/AMPS), its intrinsic viscosity 347.91mL/g, wherein, with the terpolymer
On the basis of gross weight, the content of acrylamide is 55.9 weight %, and the content of dimethyl diallyl ammonium chloride is 16.3 weights
% is measured, the content of 2- acrylamide-2-methyl propane sulfonics is 27.8 weight %.
Embodiment 1
The present embodiment is used for the preparation method for illustrating the deep-well sulphonated polymer mud of the present invention
(1) water temperature is risen to 65 DEG C by the running water for first measuring 300 grams, and 12 grams are added under low speed 600r/min electric stirrings
Drilling fluid bentonite, stir 10 minutes add 0.6 gram of Na2CO3It is stirred for 30 minutes, prehydration 24h under normal temperature and pressure；
(2) soil paste after prehydration is warming up to after 65 DEG C again add 3.0 grams of heat and salinity tolerance amphion fluid loss additives with
Stirred 60 minutes under high speed 1000r/min after 10.50 grams of Sodium Polyacrylates, add 12 grams of sodium chloride and 15.0 grams of potassium chloride
And after 1.050 grams of sodium hydrogensulfites under low speed 600r/min stir 60 minutes as base starch it is standby；
(3) 10.50 grams of sulfonated-pheno-formoldehyde resins and 10.50 grams of sulfonated lignites and then in above-mentioned base slurry are added in low speed
Stirred 30 minutes under 600r/min, regulation drilling fluid system pH value is 8.5；Finally with 50-70 microns of BaSO4(200 grams)：1-
1.2 microns of BaSO4(50 grams)=4：Drilling fluid system is exacerbated to 2.30g/cm by 1 ratio3This high density deep-well polysulfonate is made to bore
Well liquid.
As a result deep-well sulphonated polymer mud I is prepared, temperature resistance ability is up to 220 DEG C, and the deep-well polysulfonate drilling well after aging
The other performance of liquid is as shown in table 2；The deep-well sulphonated polymer mud prepared by embodiment 1 is entered using XGRL-2 types roller heating stove
Rolling rate of recovery of having gone determines as shown in table 3.
Embodiment 2
The present embodiment is used for the preparation method for illustrating the deep-well sulphonated polymer mud of the present invention
(1) water temperature is risen to 65 DEG C by the running water for first measuring 250 grams, and 10 grams are added under low speed 600r/min electric stirrings
Drilling fluid bentonite, stir 10 minutes add 0.5 gram of Na2CO3It is stirred for 30 minutes, prehydration 24h under normal temperature and pressure；
(2) soil paste after prehydration is warming up to after 65 DEG C again add 2.5 grams of heat and salinity tolerance amphion fluid loss additives with
Stirred 60 minutes under high speed 1000r/min after 8.75 grams of Sodium Polyacrylates, add 10 grams of sodium chloride and 12.5 grams of potassium chloride
And after 0.875 gram of sodium hydrogensulfite under low speed 600r/min stir 60 minutes as base starch it is standby；
(3) 8.75 grams of sulfonated-pheno-formoldehyde resins and 8.75 grams of sulfonated lignites and then in above-mentioned base slurry are added in low speed
Stirred 30 minutes under 600r/min, regulation drilling fluid system pH value is 8.5；Finally with 50-70 microns of BaSO4(180 grams)：1-
1.2 microns of BaSO4(120 grams)=3：Drilling fluid system is exacerbated to 2.45g/cm by 2 ratio3This high density deep-well polysulfonate is made
Drilling fluid.
As a result deep-well sulphonated polymer mud II is prepared, temperature resistance ability is up to 220 DEG C, and the deep-well polysulfonate drilling well after aging
The other performance of liquid is as shown in table 2.
Comparative example 1
Deep-well sulphonated polymer mud is prepared according to method same as Example 1, except that the consumption of various inorganic agents
Total consumption of difference, especially organic agent is few, specifically, on the basis of the clear water of 100 parts by weight, and bentonitic consumption is
3 parts by weight, the consumption of sodium carbonate is 0.2 parts by weight, and the consumption of sulfonated-pheno-formoldehyde resin is 2.5 parts by weight, the use of sulfonated lignite
Measure as 2.5 parts by weight, the consumption of sodium chloride is 4 parts by weight, and the consumption of potassium chloride is 3 parts by weight, and the consumption of bipolymer is
0.4 parts by weight, the consumption of Sodium Polyacrylate is 2.5 parts by weight, and the consumption of sodium hydrogensulfite is 3 parts by weight, barite A consumption
For 200 parts by weight, barite B consumption is 50 parts by weight.
As a result deep-well sulphonated polymer mud D1 is prepared, temperature resistance ability is up to 220 DEG C, and other performance is as shown in table 2.
Comparative example 2
Deep-well sulphonated polymer mud is prepared according to method same as Example 2, except that the consumption of various inorganic agents
Total consumption of difference, especially organic agent is more, specifically, on the basis of the clear water of 100 parts by weight, and bentonitic consumption is
6 parts by weight, the consumption of sodium carbonate is 0.3 parts by weight, and the consumption of sulfonated-pheno-formoldehyde resin is 8.5 parts by weight, the use of sulfonated lignite
Measure as 8.5 parts by weight, the consumption of sodium chloride is 5 parts by weight, and the consumption of potassium chloride is 6.5 parts by weight, the consumption of terpolymer
For 1.8 parts by weight, the consumption of Sodium Polyacrylate is 5 parts by weight, and the consumption of sodium hydrogensulfite is 5 parts by weight, barite A consumption
For 180 parts by weight, barite B consumption is 120 parts by weight.
As a result deep-well sulphonated polymer mud D2 is prepared, temperature resistance ability is up to 220 DEG C, and other performance is as shown in table 2.
Comparative example 3
Deep-well sulphonated polymer mud is prepared according to method same as Example 1, except that, also additionally it with the addition of other
Organic agent, specifically, also additionally with the addition of other organic agents, specifically, add 8 weight % by Shijiazhuang China
The fluid loss additive for boring fluid AOBS/AA/ polyol graft copolymers HLJ-4 of the prosperous Science and Technology Ltd.'s production of Lay.
As a result deep-well sulphonated polymer mud D3 is prepared, temperature resistance ability is up to 220 DEG C, the other performance such as wellbore fluid of table 2
Shown in the system performance tied up to after 220 DEG C of agings.
Table 2
| Numbering | AV | PV | YP | θ(10″) | HTHP dehydrations |
| Embodiment 1 | 63 | 47 | 16 | 3 | 15 |
| Embodiment 2 | 61 | 46 | 15 | 3 | 14.5 |
| Comparative example 1 | 84 | 68 | 16 | 4 | 54 |
| Comparative example 2 | 79 | 76 | 13 | 7 | 46 |
| Comparative example 3 | 77 | 67 | 10 | 8 | 37 |
Note：AV units are (m Pa ﹒ s), and PV units are (m Pa ﹒ s), and YP units are (Pa), and θ (10 ") unit is (Pa),
HTHP dehydrations unit is (ml).
Table 3
| Drilling fluid composition | Experiment condition | Reclaim quality (g) | The rate of recovery (%) |
| Clear water+50g red beds soil | 220℃/16h | 6.23 | 12.46 |
| Drilling fluid system+50g red beds soil | 220℃/16h | 48.08 | 96.16 |
Note：Red beds soil is the native landwaste of Sichuan red beds, is 6-10 mesh, the rate of recovery was the 40 mesh rate of recovery；Result is 2 in table
Secondary experimental data average.
From the data in table 2, it can be seen that the apparent viscosity of deep-well sulphonated polymer mud prepared by embodiment 1-2 is 61-63m Pa ﹒ s, modeling
Property viscosity be 46-47m Pa ﹒ s, dynamic stress is 15-16Pa, θ (10 ") be 3, and HTHP dehydrations be respectively less than be equal to 15ml；
And the apparent viscosity of deep-well sulphonated polymer mud prepared by comparative example 1 is 84m Pa ﹒ s, plastic viscosity is up to 68m Pa ﹒
S, dynamic stress is 16Pa, and θ (10 ") is 4Pa, moreover, HTHP dehydrations are up to 54ml most serious of all, easily causes underground complicated
The generation of accident；
The apparent viscosity of deep-well sulphonated polymer mud prepared by comparative example 2 is 79m Pa ﹒ s, and plastic viscosity is up to 76m Pa ﹒ s,
Dynamic stress is 13Pa, and θ (10 ") is 7Pa, moreover, HTHP dehydrations are up to 46ml most serious of all, easily causes the complicated thing in underground
Therefore generation；
The apparent viscosity of deep-well sulphonated polymer mud prepared by comparative example 3 is 77m Pa ﹒ s, and plastic viscosity is up to 67m Pa ﹒ s,
Dynamic stress is 10Pa, and θ (10 ") is 8Pa, moreover, HTHP dehydrations are up to 37ml most serious of all, easily causes the complicated thing in underground
Therefore generation.
From the data in table 3, it can be seen that the rolling rate of recovery of the deep-well sulphonated polymer mud prepared by embodiment 1 reaches 96.92%, say
There is the bright drilling fluid preferable rejection can effectively suppress clay aquation.
The preferred embodiment of the present invention described in detail above, still, the present invention is not limited thereto.In the skill of the present invention
In art concept, technical scheme can be carried out a variety of simple variants, including each technical characteristic with it is any its
Its suitable method is combined, and these simple variants and combination should equally be considered as content disclosed in this invention, belong to
Protection scope of the present invention.
Claims (11)
1. a kind of deep-well sulphonated polymer mud, it is characterised in that the deep-well sulphonated polymer mud contains water, bentonite, sodium carbonate, sulphur first
Base phenolic resin, sulfonated lignite, halide salt, fluid loss additive, Sodium Polyacrylate, sodium hydrogensulfite and barite, and with 100 weight
On the basis of the water of part, the bentonitic content is 3.5-5 parts by weight, and the content of the sodium carbonate is 0.15-0.35 parts by weight,
The content of the sulfonated-pheno-formoldehyde resin is 6-8 parts by weight, and the content of the sulfonated lignite is 6-8 parts by weight, the halide salt
Content be 7.5-12 parts by weight, the content of the fluid loss additive is 0.5-1.2 parts by weight, and the content of the Sodium Polyacrylate is
0.8-1.7 parts by weight, the content of the sodium hydrogensulfite is 3-5 parts by weight, and the content of the barite is 250-300 weight
Part.
2. deep-well polysulfonate deep-well sulphonated polymer mud according to claim 1, wherein, on the basis of the water of 100 parts by weight, institute
Bentonitic content is stated for 4-4.8 parts by weight, the content of the sodium carbonate is 0.2-0.24 parts by weight, the sulphur methyl phenolic aldehyde tree
The content of fat is 6.5-7.8 parts by weight, and the content of the sulfonated lignite is 6.5-7.8 parts by weight, and the content of the halide salt is
9-10.8 parts by weight, the content of the fluid loss additive is 0.75-0.9 parts by weight, and the content of the Sodium Polyacrylate is 1.2-
1.44 parts by weight, the content of the sodium hydrogensulfite is 3.5-4.2 parts by weight, and the content of the barite is 260-290 weight
Part.
3. deep-well sulphonated polymer mud according to claim 1 or 2, wherein, the fluid loss additive is acrylamide/dimethyl
Diallyl ammonium chloride bipolymer and/or acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide -2- methyl
Propane sulfonic acid terpolymer；Preferably, the fluid loss additive is acrylamide/dimethyl diallyl ammonium chloride bipolymer
With the combination of acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide-2-methyl propane sulfonic terpolymers, and third
Acrylamide/dimethyl diallyl ammonium chloride bipolymer and acrylamide/dimethyl diallyl ammonium chloride/2- acryloyls
The weight ratio of amine -2- methyl propane sulfonic acid terpolymers is (0.6-0.8)：1；
Wherein, the halide salt is sodium chloride and/or potassium chloride；Preferably, the halide salt is the group of sodium chloride and potassium chloride
Close, and the weight ratio of the sodium chloride and the potassium chloride is (0.6-0.96)：1；
Wherein, the barite is barite A and/or barite B, the barite A particle diameter are 50-70 microns, described heavy
Spar B particle diameter is 1-1.2 microns；Preferably, the barite is barite A and barite B combination, and the barite
A and barite B weight ratio is (1-4)：1.
4. deep-well sulphonated polymer mud according to claim 1, wherein, the pH of the deep-well sulphonated polymer mud is 8-9, and
The density of the deep-well sulphonated polymer mud is 2.30-2.45g/cm3。
5. a kind of preparation method of deep-well sulphonated polymer mud, it is characterised in that the preparation method comprises the following steps：
(1) prehydration processing is carried out again after bentonite and sodium carbonate being carried out into the first mixing；
(2) mixture for obtaining the processing of step (1) prehydration is mixed with fluid loss additive and Sodium Polyacrylate progress second, then
The 3rd is carried out with halide salt and sodium hydrogensulfite again to mix；
(3) mixture for obtaining step (2) is mixed with sulfonated-pheno-formoldehyde resin and sulfonated lignite progress the 4th；
Wherein, on the basis of the water of 100 parts by weight, the bentonitic consumption is 3.5-5 parts by weight, the content of the sodium carbonate
For 0.15-0.35 parts by weight, the consumption of the sulfonated-pheno-formoldehyde resin is 6-8 parts by weight, and the consumption of the sulfonated lignite is 6-8
Parts by weight, the consumption of the halide salt is 7.5-12 parts by weight, and the consumption of the fluid loss additive is 0.5-1.2 parts by weight, described
The consumption of Sodium Polyacrylate is 0.8-1.7 parts by weight, and the content of the sodium hydrogensulfite is 3-5 parts by weight, the barite
Consumption is 250-300 parts by weight.
6. preparation method according to claim 5, wherein, on the basis of the water of 100 parts by weight, the bentonitic consumption
For 4-4.8 parts by weight, the content of the sodium carbonate is 0.2-0.24 parts by weight, and the consumption of the sulfonated-pheno-formoldehyde resin is 6.5-
7.8 parts by weight, the consumption of the sulfonated lignite is 6.5-7.8 parts by weight, and the consumption of the halide salt is 9-10.8 parts by weight, institute
The consumption for stating fluid loss additive is 0.75-0.9 parts by weight, and the consumption of the Sodium Polyacrylate is 1.2-1.44 parts by weight, the Asia
The content of niter cake is 3.5-4.2 parts by weight, and the consumption of the barite is 260-290 parts by weight.
7. the preparation method according to claim 5 or 6, wherein, the fluid loss additive is the allyl of acrylamide/dimethyl two
Ammonium chloride bipolymer and/or acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide-2-methyl propane sulfonics
Terpolymer；Preferably, the fluid loss additive is acrylamide/dimethyl diallyl ammonium chloride bipolymer and propylene
The combination of acid amides/dimethyl diallyl ammonium chloride/2- acrylamide-2-methyl propane sulfonic terpolymers, and acrylamide/
Dimethyl diallyl ammonium chloride bipolymer and acrylamide/dimethyl diallyl ammonium chloride/2- acrylamide -2- first
The weight ratio of base propane sulfonic acid terpolymer is (0.6-0.8)：1；
Wherein, the halide salt is sodium chloride and/or potassium chloride；Preferably, the halide salt is the group of sodium chloride and potassium chloride
Close, and the weight ratio of the sodium chloride and the potassium chloride is (0.6-0.96)：1；
Wherein, the barite is barite A and/or barite B, the barite A particle diameter are 50-70 microns, described heavy
Spar B particle diameter is 1-1.2 microns；Preferably, the barite is barite A and barite B combination, and the barite
A and barite B weight ratio is (1-4)：1.
8. preparation method according to claim 5, wherein, in step (1), the condition of first mixing includes：Temperature
Spend for 50-70 DEG C, stir speed (S.S.) is 550-650r/min, the time is 30-45 minutes；The condition of the prehydration processing includes：
Temperature is 50-70 DEG C, and stir speed (S.S.) is 550-650r/min, and the time is 23-25 hours；
Wherein, in step (2), the condition of second mixing includes：Temperature is 60-70 DEG C, and stir speed (S.S.) is 950-
1000r/min, the time is 50-70 minutes；And the condition of the 3rd mixing includes：Temperature is 60-70 DEG C, and stir speed (S.S.) is
550-650r/min, the time is 50-70 minutes；
Wherein, in step (3), the condition of the 4th mixing includes：Temperature is 60-70 DEG C, and stir speed (S.S.) is 550-650r/
Min, the time is 30-40 minutes.
9. preparation method according to claim 5, wherein, the preparation method is carried out under agitation, and the stirring
Condition includes：Stir speed (S.S.) is 500-1100 revs/min, preferably 550-1000 revs/min.
10. the deep-well sulphonated polymer mud prepared as the preparation method described in any one in claim 5-9.
11. deep-well sulphonated polymer mud according to claim 10, wherein, the pH of the deep-well sulphonated polymer mud is 8-9, with
And the density of the deep-well sulphonated polymer mud is 2.30-2.45g/cm3。
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| PCT/CN2017/100133 WO2019010771A1 (en) | 2017-07-12 | 2017-07-12 | Deep-well polysulfonate drilling fluid and preparation method therefor |
| CN201710565459.XA CN107245329B (en) | 2017-07-12 | 2017-07-12 | Deep-well sulphonated polymer mud and preparation method thereof |
| US15/795,792 US9926482B1 (en) | 2017-07-12 | 2017-10-27 | Deep-well polysulfonate drilling fluid and preparation method thereof |
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