CN107177349A - A kind of high inhibition amido silanol drilling fluid and preparation method thereof - Google Patents
A kind of high inhibition amido silanol drilling fluid and preparation method thereof Download PDFInfo
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- CN107177349A CN107177349A CN201710303539.8A CN201710303539A CN107177349A CN 107177349 A CN107177349 A CN 107177349A CN 201710303539 A CN201710303539 A CN 201710303539A CN 107177349 A CN107177349 A CN 107177349A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/22—Synthetic organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/22—Synthetic organic compounds
- C09K8/24—Polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/34—Lubricant additives
Abstract
The invention provides a kind of high inhibition amido silanol drilling fluid and preparation method thereof.By percentage to the quality, the high inhibition amido silanol drilling fluid includes following components：2% 5% bentonites, 0.2% 0.5% sodium carbonate, 0.3% 0.5% polyacrylamide sylvite, 1% 2% walchowites, 2% 3% anti-collapse inhibitors, 2% 3% fluid loss additives, 0.5% 1% thinners, 1.0% 1.5% amido silanol and heavy weight additives, surplus is water；The density that the consumption of the heavy weight additive is used to adjust the high inhibition amido silanol drilling fluid is 1.1g/cm3‑1.6g/cm3.The high inhibition amido silanol drilling fluid has stronger lubricating ability; bit speed can effectively be improved; effect significantly, efficiently solves the problem of caving in of coal seam and carbonaceous mudstone in terms of improving reservoir protection, controlling drilling fluid rheology, raising drilling fluid resistance tocrocking and reduction underground complex accident to occur simultaneously.
Description
Technical field
The invention belongs to technical field of petroleum extraction, it is related to a kind of drilling fluid for petroleum drilling engineering, more particularly to
A kind of high inhibition amido silanol drilling fluid and preparation method thereof.
Background technology
Ratio of the petroleum resources in China's petroleum resources in coal seam and carbonaceous mud shale stratum constantly expands, and distribution is wide
It is general, but the exploitation difficulty of petroleum resources greatly, is developed sustainable and stable development of the good this kind of oil-gas reservoir to China Petroleum and had here
It is of great significance.
The tensile strength and modulus of elasticity very little in coal seam.Drilling fluid density is too low to cause tectonic stress to discharge, and make coal seam
Burst apart and cave in along joint and crack, substantial amounts of chip off-falling, which floats, can cause annular space choked flow and bit freezing；When drilling fluid density is too high, water exists
Wedge coal seam under differential pressure action, the bond between reduction coal petrography causes the drastically change of stress in coal bed, can crush well or
Coal body near the borehole wall, while release will be obtained by occurring the stress on the mobile phenomenon of extrusion, layer to toric space, water is in coal seam
It is middle to move and excluded along coal seam fracture to annular space, make Coal Pore Structure loose and cave in.It it requires that drilling fluid density should not be big
Amplitude changes.
Although clay mineral content is very low in coal seam, mud shale interlayer clay mineral content is high, the drilling well of inhibition difference
Liquid filtrate, which enters mud shale, can produce hydration swelling and cave in, and change the distribution of well circumferential stress.Coal seam makes to collapse because losing support
Aggravation；Equally, the mud shale near also promoting that caves in coal seam caves in, and the two influences each other, mutually promoted, and forms pernicious follow
Ring.
Water gos deep into formation fracture and hole under capillary force action, weakens the hydrogen bond and Van der Waals between coal molecule
Power, and lubricate the reduction that crack causes coal petrography cohesive force and internal friction；And for hydrophobic surface, water enters crack under differential pressure
And hole, surface tension produce additonal pressure crack is strutted, destroy coal petrography.So various types of water-base drilling fluids,
Make the intensity decreases of coal petrography and aggravate borehole well instability.
A small amount of clay mineral in coal petrography, which is mainly distributed in the crack of coal and hole, plays cementation, is produced after coal petrography water suction
Raw hydration swelling.The tensile strength of coal is low, and modulus of elasticity is small, and fusinite and vitrinite are each independent in coal, and anisotropism is strong, water
Changing expansion causes stress raisers, causes peeling to be caved in.In addition, expansion be also coal petrography cohesive force reduction, fracture propagation it is grand
See performance.High temperature can also aggravate hydration, promote caving in for stratum.Therefore, the quality and success of drilling and completing fluids quality
Exploration, the hypotonic compact reservoir of Efficient Development are closely bound up.
The content of the invention
In view of the shortcoming of above-mentioned prior art, it is an object of the invention to provide a kind of high inhibition amido silanol drilling fluid and
Its preparation method.The characteristics of a kind of high inhibition amido silanol drilling fluid is mainly for carbonaceous formations, can solve the problem that coal seam and carbon
Matter mud stone caves in problem, reduces the generation of underground complex accident, improves bit speed, it is ensured that wellbore construction job safety is quick
Carry out.
In order to achieve the above object, the present invention provides a kind of high inhibition amido silanol drilling fluid, by percentage to the quality, institute
Stating high inhibition amido silanol drilling fluid includes following components：2%-5% bentonites, 0.2%-0.5% sodium carbonate, 0.3%-
0.5% polyacrylamide sylvite, 1%-2% walchowites, 2%-3% anti-collapse inhibitors, 2%-3% fluid loss additives, 0.5%-
1% thinner, 1.0%-1.5% amidos silanol and heavy weight additive, surplus is water；The consumption of the heavy weight additive is used to adjust described strong
The density for suppressing amido silanol drilling fluid is 1.1g/cm3-1.6g/cm3。
In above-mentioned high inhibition amido silanol drilling fluid, it is preferable that by percentage to the quality, the high inhibition amido silanol
Drilling fluid includes following components：3% bentonite, 0.3% sodium carbonate, 0.5% polyacrylamide sylvite, 2% walchowite, 2%
Anti-collapse inhibitor, 3% fluid loss additive, 0.5% thinner, 1.0% amido silanol and heavy weight additive, surplus is water；The heavy weight additive
Consumption be used for adjust the high inhibition amido silanol drilling fluid density be 1.1g/cm3-1.6g/cm3。
In above-mentioned high inhibition amido silanol drilling fluid, it is preferable that the plasticity of the high inhibition amido silanol drilling fluid is glued
Spend for 24mPas-29mPas, yield value is 9.5Pa-10.0Pa, and filter loss is 2.2mL-4.9mL.
In above-mentioned high inhibition amido silanol drilling fluid, it is preferable that the anti-collapse inhibitor includes humic acid potassium, sulfonation and dripped
Blue or green FT1 or shale control agent KAHm.It is highly preferred that the humic acid potassium meets DZ/T 0093-1994 drilling fluid inhibitor
Standard, the sulfonated gilsonite FT1 meets the standard of SY/T 5664-19 shale-control agent for drilling fluid, the shale control agent
KAHm meets the standard of SY 5668-1993 shale-control agent for drilling fluid.
In above-mentioned high inhibition amido silanol drilling fluid, it is preferable that the fluid loss additive include sulfonated phenolic resin SMP-
II or non-fluorescence collapse-proof fluid loss additive KH-931.It is highly preferred that the sulfonated phenolic resin SMP-II meets SY/T5094-
2008 fluid loss additive for boring fluid standards, the non-fluorescence collapse-proof fluid loss additive KH-931 meets Q/WXG001-2012 drilling fluids
Use fluid loss additive standard.
In above-mentioned high inhibition amido silanol drilling fluid, it is preferable that the thinner includes amphoteric ion polymer viscosity reduction
Agent XY27.It is highly preferred that the amphoteric ion polymer thinner XY27 meets SY/T5695-1995 viscosity depressant for drilling fluid marks
It is accurate.
In above-mentioned high inhibition amido silanol drilling fluid, it is preferable that the heavy weight additive includes barite.It is highly preferred that should
Barite meets GB-T5005-2010 drilling fluid materialses specifications.
In above-mentioned high inhibition amido silanol drilling fluid, it is preferable that the bentonite is drilling well level bentonite.More preferably
Ground, the bentonite meets GB-T5005-2010 drilling fluid materialses specifications.
In above-mentioned high inhibition amido silanol drilling fluid, it is preferable that the sodium carbonate is industrial to meet GB 210.1-2004
Industrial sodium carbonate as defined in sodium carbonate and its test method part 1.
In above-mentioned high inhibition amido silanol drilling fluid, it is preferable that the polyacrylamide sylvite meets SY-T5946-
2002 drilling fluid standards；The walchowite meets SY/T 5679-1993 drilling fluid standards；The amido silanol meets
Q/JHK1056-2013 drilling fluids inhibitor standard.
Above-mentioned high inhibition amido silanol drilling fluid is particularly suitable for use in coal seam, draws in the strand of its amido silanol used
Amidine functional group is entered, this unique molecular structure makes amido silanol be embedded in clay interlayer well, and makes clay layer tight
It is close to be combined together, so that reduce clay interlamellar spacing, while emulsified oil droplet is separated out in drilling well liquor, and then the pressure difference in well
In the presence of, drilling fluid formation is squeezed into the trend in borehole wall hole or crack and absorb moisture to reduce clay.Secondly, amido silanol
Inhibitory action can be played for a long time, prevents formation fluid slug from being washed away to formation pore, and ensure that drilling well is made
Industry terminates the inhibition to stratum after a period of time.
In addition, with conventional common polyether product by driving away the water in shale sheaf space come anti-collapse difference, above-mentioned strong suppression
Amido silanol in amido silanol drilling fluid processed combines the advantage of both polyamine and PPG, is introduced in strand
Amido, by metal cation adsorption, on clay surface, or in ion exchange, substituted metal cation is formd amido
Constraint to clay, and then anti sloughing effectiveness is played, therefore, not only there is the amido silanol cation to adsorb by force, high inhibition, work
With the time it is long the advantages of, and overcome cation flocculation serious to drilling fluid, the increase weakness such as dehydration, and amido can with it is glutinous
Soil forms hydrogen bond, and suction-operated is stronger, and the nonionic nature of amido silanol strand easily forms layer protecting film on mud cake, from
And prevent drilling fluid from being permeated to stratum and cause to cave in, it is more suitable for strong retraction and multiple seam bad ground.
Above-mentioned high inhibition amido silanol drilling fluid, the amido silanol of use by increasing substantially the inhibition of drilling fluid,
The aquation dispersity of clay and low-density solid is changed, " passivation " has been carried out to clay and low-density solid, institute is reduced
The bridging action of solid phase is stated, makes the solid phase insensitive to inorganic ions.Meanwhile, small molecule organic amine inorganic agent is due to its amido
Stronger adsorption capacity, makes the absorption of amido silanol on the low-density solid particle such as clay, while making part polymeric treating agent
Desorption, more reduces the viscosity and shear force of drilling fluid, makes the rheological characteristic of whole high inhibition amido silanol drilling fluid system stable.
Meanwhile, amido silanol in above-mentioned high inhibition amido silanol drilling fluid also has efficient lubrication, and it can be
Effectively absorption is produced on drilling tool and sleeve surface and rock of borehole, lubricating film highly stable and with some strength is formed, should
Lubricating film has less viscous pressure coefficient, can greatly reduce the frictional force between drilling tool and the borehole wall and sleeve pipe, reduction
The rotation torque of drilling tool and rise, lower brill resistance, it is therefore not necessary to which separately plus lubricant, surfactant can also need not be added.This
Outside, the amido silanol can also directly participate in the formation of mud cake, mud cake is had preferable lubricity, be effectively prevented from or reduce
The generation of differential sticking, prevents coalescence adhesion and the bit balling of drilling cuttings, so as to improve rate of penetration.
Above-mentioned high inhibition amido silanol drilling fluid is as a result of the amido silanol with cloud point, when temperature is more than turbid
Emulsion drop can be separated out during point, borehole wall gap is squeezed under differential pressure action and plays plugging effect, external solid phase is effectively prevented
Grain intrusion oil-gas Layer, formation damage caused by reduction is blocked because of external solid phase particles at oil-gas Layer pore throat, simultaneously because
Mud cake is formd, the hole of rock has been blocked, has prevented filtrate to enter stratum.Secondly, the drilling well liquid energy effectively suppresses oil gas
The hydration swelling of clay mineral and scattered, the water sensitivity infringement of reduction oil-gas Layer in layer.And at oil-gas Layer pore throat formed " temporarily
Stifled particle " is deformable, can smoothly return and eject in the case where returning the effect of row pressure power, so as to be conducive to oil-gas Layer permeability
Recovery, and acted synergistically with amido, and then play stabilizing borehole, protect the effect of reservoir.
The present invention also provides the preparation method of above-mentioned high inhibition amido silanol drilling fluid, and it comprises the following steps：
By bentonite, sodium carbonate, polyacrylamide sylvite, walchowite, anti-collapse inhibitor, fluid loss additive, thinner and
Amido silanol is added to the water mixing, obtains mixed liquor；Then add heavy weight additive and adjust the density of the mixed liquor for 1.1g/cm3-
1.6g/cm3Obtain the high inhibition amido silanol drilling fluid.
Compared with existing drilling fluid, the high inhibition amido silanol drilling fluid that provides of the present invention is particularly suitable for use in coal seam, its
With advantages below：
(1) the high inhibition amido silanol drilling fluid that the present invention is provided is good to the inhibition of shale, has to active shale
Very strong inhibitory action, can effectively control the hydration swelling of clay to disperse, reduce the bulbs of pressure, reduce down hole problem hair
It is raw；
(2) the core permeability recovery value for the high inhibition amido silanol drilling fluid that the present invention is provided is higher, main inhibitor amine
Base silanol has surface-active, it is possible to decrease high inhibition amido silanol drilling fluid surface tension, so that effectively control solid phase and liquid phase
Infringement, reservoir protec-tion；
(3) the high inhibition amido silanol drilling fluid that the present invention is provided further is carried using amido silanol as main inhibitor
High wellbore fluid ties up to and takes bits property, borehole wall stability, mould high-quality filter cake, reservoir protec-tion, ensure downhole safety in terms of
Performance, and reduction drilling fluid density, enhancing rheological stability in the case of strata pressure is accurately grasped reduce underground complicated
The generation of accident, improves bit speed, and pollution resistance is good, the feature of environmental protection is good, can be in low solid phase or clay-free drilling fluid system
Preferentially promote the use of；
(4) preparation method for the high inhibition amido silanol drilling fluid that the present invention is provided, simple and easy to apply, easy to maintenance.
Embodiment
In order to which technical characteristic, purpose and beneficial effect to the present invention are more clearly understood from, now to the skill of the present invention
Art scheme carry out it is described further below, but it is not intended that to the present invention can practical range restriction.
The drilling fluid of the various models used the high inhibition amido silanol drilling fluid suitable for coal seam that the present invention is provided
Can be the code name of industry universal or the code name of producer with inorganic agent, as long as the inorganic agent of different manufacturers production meets
State standard requirement and technical scheme can be achieved.
Embodiment 1
A kind of high inhibition amido silanol drilling fluid suitable for coal seam is present embodiments provided, by mass percentage, it is wrapped
Include 3% bentonite, 0.3%Na2CO3, 0.5% polyacrylamide sylvite (KPAM), 2% walchowite (SPNH), 1% sulfonation drip
Blue or green FT1,1% shale control agent KAHm, 2% sulfonated phenolic resin SMP-II, 1% non-fluorescence collapse-proof fluid loss additive KH-9311,
0.5% amphoteric ion polymer thinner XY27 and 1.0% amido silanol, surplus is water, then adds the strong suppression of barite regulation
The density of amido silanol drilling fluid processed is to 1.2g/cm3。
The present embodiment additionally provide above-mentioned high inhibition amido silanol drilling fluid be used for tight sandstone reservoir inhibition experiment,
Temperature resistance, antipollution experiment, the experiment of reservoir protection effect assessment, to further illustrate the high inhibition amido silicon of the present embodiment offer
The premium properties of alcohol drilling fluid.
1st, amido silanol drilling fluid basic performance：
This experiment is according to GB/T 16783.1-2014 industrial gas oil drilling fluid on-the-spot test part 1s：It is water base
Drilling fluid standard method is tested, and its test result is as shown in table 1：
Table 1
From table 1 it follows that at room temperature, the viscosity of high inhibition amido silanol drilling fluid made from the present embodiment and cut
Power is moderate, and filter loss is smaller；After high temperature ageing 16h at a temperature of 160 DEG C, though the viscosity and shear force of the amido silanol drilling fluid are slightly
There is decline, but ratio of dynamic shear force/yield value to plastic viscosity is moderate, and this is conducive to carrying drilling cuttings, and API filtration is relatively low, illustrates the high inhibition amido silanol drilling well
Liquid has good rheological property and high temperature resistant property, disclosure satisfy that field test condition.
2nd, landwaste pollution experiment：
Drilling cuttings is present in drilling process all the time, and is the main solid-phase contaminants of drilling fluid.Therefore, drilling fluid has to
With certain anti-landwaste pollution capacity, prevent the performance of drilling fluid because cuttings contamination fluctuates widely.This experiment is pressed
According to GB/T 16783.1-2014 industrial gas oil drilling fluid on-the-spot test part 1s：Water-base drilling fluid standard method is carried out
Test, its test result is as shown in table 2：
Table 2
As can be seen from Table 2, performance is stable before and after high inhibition amido silanol drilling fluid contamination, viscosity, yield value and dehydration
Amount change is little.With the increase of intrusion soil amount, the viscosity and shear force of high inhibition amido silanol drilling fluid made from the present embodiment
It is not significantly improved, API filtration slightly rises, when intrusion soil amount is 9%, the high inhibition amido silanol drilling fluid is overall
Performance is not destroyed, and illustrates that high inhibition amido silanol drilling fluid made from the present embodiment has good resistant to pollution energy
Power, the need for drilling engineering being met.
3rd, reservoir protection effect assessment is tested
Instrument is dynamically polluted with the HTHPs of DW- II to the above-mentioned high inhibition amido silanol drilling well suitable for tight sandstone reservoir
Liquid carries out reservoir protection effect assessment experiment.The rock core for choosing 4 kinds of different permeabilities respectively is concretely comprised the following steps, according to SY/T
6540-2002 damage of drilling fluid and completion fluid oil reservoir indoor evaluation methods, determine the high inhibition amido silanol brill that the present embodiment is provided
The permeability resume figure of rock core after well liquid is contaminated, as a result as shown in table 3.Experiment condition is as follows：Temperature is 120 DEG C, and pressure difference is
2MPa, confined pressure is 3MPa, and the drilling fluid contamination time is 0.5h.
Table 3
As can be seen from Table 3, the core permeability recovery value of 1-4 rock cores is more than 88.1%, it is seen that form this reality
Solid phase particles and the filtrate in drilling fluid can fully be stopped by applying the shading ring of high inhibition amido silanol drilling fluid formation made from example
Into oil-gas Layer, infringement of the high inhibition amido silanol drilling fluid that the present embodiment is provided to reservoir is low, is protected with preferable reservoir
Protect effect.
As a result show, the high inhibition amido silanol drilling fluid that embodiment 1 is provided has preferable anti-collapse, anti-sticking ability, can
To meet the requirement of protection reservoir, and high-temperature resistance is strong, it can be ensured that wellbore construction job safety is rapidly performed by, it is adaptable to
Coal seam.
Claims (10)
1. a kind of high inhibition amido silanol drilling fluid, it is characterised in that：By percentage to the quality, the high inhibition amido silanol is bored
Well liquid includes following components：2%-5% bentonites, 0.2%-0.5% sodium carbonate, 0.3%-0.5% polyacrylamides sylvite,
1%-2% walchowites, 2%-3% anti-collapse inhibitors, 2%-3% fluid loss additives, 0.5%-1% thinners, 1.0%-1.5%
Amido silanol and heavy weight additive, surplus are water；The consumption of the heavy weight additive is used to adjust the high inhibition amido silanol drilling fluid
Density is 1.1g/cm3-1.6g/cm3。
2. high inhibition amido silanol drilling fluid according to claim 1, it is characterised in that：By percentage to the quality, it is described
High inhibition amido silanol drilling fluid includes following components：3% bentonite, 0.3% sodium carbonate, 0.5% polyacrylamide sylvite,
2% walchowite, 2% anti-collapse inhibitor, 3% fluid loss additive, 0.5% thinner, 1.0% amido silanol and heavy weight additive, surplus
For water；The density that the consumption of the heavy weight additive is used to adjust the high inhibition amido silanol drilling fluid is 1.1g/cm3-1.6g/
cm3。
3. high inhibition amido silanol drilling fluid according to claim 1, it is characterised in that：The high inhibition amido silanol is bored
The plastic viscosity of well liquid is 24mPas-29mPas, and yield value is 9.5Pa-10.0Pa, and filter loss is 2.2mL-4.9mL.
4. high inhibition amido silanol drilling fluid according to claim 1, it is characterised in that：The anti-collapse inhibitor includes corruption
POTASSIUM PHYTATE, sulfonated gilsonite FT1 or shale control agent KAHm；
Preferably, the humic acid potassium meets the standard of DZ/T 0093-1994 drilling fluid inhibitor, the sulfonated gilsonite FT1
Meet the standard of SY/T 5664-19 shale-control agent for drilling fluid, the shale control agent KAHm meets SY 5668-1993 brills
The standard of well liquid shale control agent.
5. high inhibition amido silanol drilling fluid according to claim 1, it is characterised in that：The fluid loss additive includes sulfonation
Phenolic resin SMP- II or non-fluorescence collapse-proof fluid loss additive KH-931；
Preferably, the sulfonated phenolic resin SMP-II meets SY/T5094-2008 fluid loss additive for boring fluid standards, the nothing
Fluorescence and sinking-proof type fluid loss additive KH-931 meets Q/WXG001-2012 fluid loss additive for boring fluid standards.
6. high inhibition amido silanol drilling fluid according to claim 1, it is characterised in that：The thinner include both sexes from
Sub- polymer viscosity reducer XY27；
Preferably, the amphoteric ion polymer thinner XY27 meets SY/T5695-1995 viscosity depressant for drilling fluid standards.
7. high inhibition amido silanol drilling fluid according to claim 1, it is characterised in that：It is brilliant that the heavy weight additive includes weight
Stone；
Preferably, the barite meets GB-T5005-2010 drilling fluid materialses specifications.
8. high inhibition amido silanol drilling fluid according to claim 1, it is characterised in that：The bentonite is that drilling well level is swollen
Profit soil；
Preferably, bentonite meets GB-T5005-2010 drilling fluid materialses specifications.
9. high inhibition amido silanol drilling fluid according to claim 1, it is characterised in that：The sodium carbonate is to meet GB
210.1-2004 industrial sodium carbonate as defined in industrial sodium carbonate and its test method part 1；
The polyacrylamide sylvite meets SY-T 5946-2002 drilling fluid standards；
The walchowite meets SY/T 5679-1993 drilling fluid standards；
The amido silanol meets Q/JHK1056-2013 drilling fluid inhibitor standards.
10. the preparation method of the high inhibition amido silanol drilling fluid described in claim any one of 1-9, it comprises the following steps：
By bentonite, sodium carbonate, polyacrylamide sylvite, walchowite, anti-collapse inhibitor, fluid loss additive, thinner and amido
Silanol is added to the water mixing, obtains mixed liquor；Then add heavy weight additive and adjust the density of the mixed liquor for 1.1g/cm3-
1.6g/cm3Obtain the high inhibition amido silanol drilling fluid.
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| CN111116631A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Organic silicon inhibitor for drilling fluid and preparation method thereof |
| CN112858577A (en) * | 2019-11-28 | 2021-05-28 | 中国石油天然气股份有限公司 | Judgment method for strong and weak shale gas drilling fluid inhibition |
| CN114437682A (en) * | 2020-11-05 | 2022-05-06 | 中国石油化工股份有限公司 | Fractured carbonate reservoir protection drilling fluid and preparation method thereof |
| CN115725279A (en) * | 2021-08-31 | 2023-03-03 | 中国石油化工股份有限公司 | Ultralow-activity strong-inhibition potassium-amino drilling fluid system and preparation method and application thereof |
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| CN112858577A (en) * | 2019-11-28 | 2021-05-28 | 中国石油天然气股份有限公司 | Judgment method for strong and weak shale gas drilling fluid inhibition |
| CN114437682A (en) * | 2020-11-05 | 2022-05-06 | 中国石油化工股份有限公司 | Fractured carbonate reservoir protection drilling fluid and preparation method thereof |
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