CN110105930A - A kind of bentonite drilling fluid and preparation method thereof - Google Patents
A kind of bentonite drilling fluid and preparation method thereof Download PDFInfo
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- CN110105930A CN110105930A CN201910330508.0A CN201910330508A CN110105930A CN 110105930 A CN110105930 A CN 110105930A CN 201910330508 A CN201910330508 A CN 201910330508A CN 110105930 A CN110105930 A CN 110105930A
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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
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/514—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
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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
- C09K2208/28—Friction or drag reducing additives
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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 discloses a kind of bentonite drilling fluids and preparation method thereof, are related to drilling well production technique field.It is characterized in that: a kind of bentonite drilling fluid, the component including following parts by weight: water: 100 parts；Bentonite: 8~10 parts；Aminated compounds: 2~6 parts；Cellulose family additive: 0.2~1 part；Lubricant: 1~4 part；Builder: 1~2 part, the present invention has the advantages that reduction filter loss, retaining capacity is strong and seal-off effect is good.
Description
Technical field
The present invention relates to drilling well production technique fields, more specifically, it relates to a kind of bentonite drilling fluid and its preparation
Method.
Background technique
Drilling fluid is the various circulation of fluid general names for meeting drilling well need of work in drilling process with its multiple functions.It bores
Well liquid can be divided into clear water, mud, free clay phase flushing liquor, emulsion, foam and compressed air etc. by constituent.Clear water is to make
It is easy to use without processing with earliest drilling fluid, suitable for complete rock stratum and the area having abundant water resources.Mud is to make extensively
Drilling fluid is primarily adapted for use in the hole walls unstable formations such as loose, cranny development, easy collapsing and breaking, water-swellable peeling.
Common drilling fluid primary raw material is bentonite currently on the market, and conventional bentonite drilling fluid is in mud yield, change
Learning stability and retaining wall performance etc., there are wretched insufficiencies, thus in Deep Excavation, it is continuous often to will appear underground
Because pressing from both sides mud percolating water occurs for wall seam, and large area dew muscle, wall is led to problems such as to settle.
Summary of the invention
In view of the deficienciess of the prior art, the purpose of the present invention one is to provide a kind of bentonite drilling fluid, by adding
Add aminated compounds and cellulose family additive, has the advantages that reduction filter loss, retaining capacity is strong and seal-off effect is good.
To achieve the above object one, the present invention provides the following technical scheme that
A kind of bentonite drilling fluid, the component including following parts by weight:
Water: 100 parts；
Bentonite: 8~10 parts；
Aminated compounds: 2~6 parts；
Cellulose family additive: 0.2~1 part；
Lubricant: 1~4 part；
Builder: 1~2 part.
By using above-mentioned technical proposal, aminated compounds plays the role of potent inhibitor, and the suppression of drilling fluid can be improved
Property processed can also increase substantially drilling fluid to clay and drilling cuttings inhibition；Cellulose family additive plays drop in drilling fluid
The effect of leak-off has the advantages that from a wealth of sources and environmentally friendly；Lubricant plays lubrication and closure in drilling fluid
Effect；The quality of drilling fluid can be improved in builder, improves the hydrophobic oleophilic oil of drilling fluid.
Further preferably, the bentonite uses sodium bentonite.
By using above-mentioned technical proposal, the bentonitic pulping performance and dispersion performance of different alkali have very big difference,
Calcium-base bentonite cannot be directly used to configuration drilling fluid, and aquation dispersibility is poor, and sodium bentonite meets water electrode and is easily dispersed into stabilization
Colloidal dispersion, aquation dispersion it is relatively good with thermal stability, be directly suitable for drilling fluid mud-making material.
Further preferably, the aminated compounds is using in polyacrylamide, polyethyene diamine and polyethylene glycol diamines
It is one or more.
By using above-mentioned technical proposal, aminated compounds improves the inhibition of drill-in fluid, inhibits so that drilling fluid has
The characteristic of stratum pulping；In addition, aminated compounds uses macromolecule polyalcohol, it is inserted into bentonitic interlayer, increases swelling
The interlamellar spacing of soil, improves bentonitic specific surface area, is conducive to the intercalation of other organic matters, improve bentonitic hydrophobic oleophilic oil
Property.
Further preferably, the cellulose family additive uses hydroxymethyl cellulose and/or hydroxyethyl cellulose.
By using above-mentioned technical proposal, hydroxymethyl cellulose and hydroxyethyl cellulose play glutinous suspension in drilling fluid
The effect of thickening agent and stabilizer, with preferable salt resistance, antiacid, anticalcium and high temperature resistance.
Further preferably, the lubricant uses microemulsion WR-I.
By using above-mentioned technical proposal, microemulsion WR-I is using Span-80 and Tween-80 complexed surfactant as base
Plinth is researched and developed by cosurfactant of n-butanol, which can be obviously improved mud cake quality, has good closure effect
Fruit, sealing ratiod are up to 95%, have outstanding role to wellbore stability；The microemulsion also has excellent lubricating action, can be big
Width reduces the frictional resistance between drilling tool and the borehole wall, drilling tool and drilling cuttings.
Further preferably, the builder include weight fraction ratio be 1:(1.2~7) ammonium salt and magnesium salts, wherein
Ammonium salt uses stearyl dimethyl benzyl ammonium chloride, and magnesium salts uses magnesium chloride.
By using above-mentioned technical proposal, builder is added, the quality of drilling fluid can be significantly improved, wherein octadecane
Alkyl phosphate ion in base dimethyl benzyl ammonium chloride enters bentonitic interlayer, bentonite table by ion-exchange reactions
The alkyl chain covering that face is had on organic ion, so that bentonite becomes hydrophobic oleophilic oil.
It further preferably, further include parts by weight in the raw material components is 0.1~2 part of polyethylene glycol.
By using above-mentioned technical proposal, the chain of polyethylene glycol is inserted into bentonitic interlayer, makes bentonitic interlamellar spacing
Expand, increases bentonitic specific surface area, improve its hydrophobic oleophilic oil.
The purpose of the present invention two is to provide a kind of preparation method of bentonite drilling fluid, using the swelling of this method preparation
Earth boring auger well liquid has the advantages that reduction filter loss, retaining capacity is strong and seal-off effect is good.
To achieve the above object two, the present invention provides the following technical scheme that
A kind of preparation method of bentonite drilling fluid, comprising the following steps:
Step 1 takes the water of corresponding parts by weight, and bentonite is added, and stirs 0.5~0.75h, and then maintenance is handled, and makes bentonite
Abundant aquation obtains base slurry；
Successively builder, cellulose family additive, aminated compounds and lubricant is added into base slurry in step 2,800~
High-speed stirred is carried out under the revolving speed of 2000rpm and mixes 0.5~0.75h, obtains bentonite drilling fluid.
Further preferably, in step 1, curing time be 12~for 24 hours.
By using above-mentioned technical proposal, maintenance 12~for 24 hours, enable bentonite fully dispersed and aquation.
Further preferably, in step 1, whipping process is heated, and heating temperature is 45~60 DEG C.
By using above-mentioned technical proposal, heating improves the temperature of water, improves the dispersibility of bentonite in water, that is, improves
Bentonitic mud yield.
In conclusion compared with prior art, the invention has the following advantages:
(1) by addition aminated compounds, aminated compounds uses macromolecule polyalcohol, is inserted into bentonitic interlayer, increases
Big bentonitic specific surface area, macromolecular chain is attached to bentonitic surface, to improve bentonitic hydrophobic oleophilic oil, furthermore amine
Compound plays the role of potent inhibitor, and the inhibition of drilling fluid can be improved, and increases substantially drilling fluid to clay and brill
Consider inhibition to be worth doing；Cellulose family additive is added, can be thickened and stable slurry, and there is preferable salt resistance, antiacid, anticalcium and Nai Gao
The performance of temperature, aminated compounds and cellulose family additive contribute to form the colloidal solution of cross-linked network, are bored with being promoted
The performance of well liquid reduces the filter loss of drilling fluid, promotes the stability of the borehole wall；
(2) by addition microemulsion WR-I, improvement of mud cake additionally has excellent with good plugging action
The frictional resistance between drilling tool and the borehole wall, drilling tool and drilling cuttings can be greatly lowered in lubricating action.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.It is worth noting that wherein being not specified specific
Condition person, lower according to conventional conditions or manufacturer's recommended conditions to carry out, reagents or instruments used without specified manufacturer,
For the conventional products that can be obtained by commercially available purchase.
Embodiment 1: a kind of bentonite drilling fluid, each component and its corresponding parts by weight are as shown in table 1, and by as follows
Step prepares:
Sodium bentonite is added to the water by step 1, stirs 0.5h under heating conditions, and heating temperature is 45 DEG C, then
Maintenance 12h is carried out, base slurry is obtained；
Successively stearyl dimethyl benzyl ammonium chloride, magnesium chloride, hydroxymethyl cellulose, poly- third is added into base slurry in step 2
Acrylamide and microemulsion WR-I carry out high-speed stirred under the revolving speed of 800rpm and mix 0.5h, obtain bentonite drilling fluid.
Embodiment 2-6: a kind of bentonite drilling fluid, difference from example 1 is that, each component and its corresponding weight
It is as shown in table 1 to measure number.
Each component and its parts by weight in 1 embodiment 1-6 of table
Embodiment 7: a kind of preparation method of bentonite drilling fluid, difference from example 1 is that, in step 2, successively
0.45 part of stearyl dimethyl benzyl ammonium chloride, 0.55 part of magnesium chloride, 0.2 part of hydroxyethyl cellulose, 2 parts is added into base slurry
Polyacrylamide and 1 part of microemulsion WR-I carry out high-speed stirred under the revolving speed of 800rpm and mix 0.5h, obtain bentonite drilling well
Liquid.
Embodiment 8: a kind of preparation method of bentonite drilling fluid, difference from example 1 is that, in step 2,
0.45 part of stearyl dimethyl benzyl ammonium chloride, 0.55 part of magnesium chloride, 0.1 part of hydroxylmethyl cellulose successively is added into base slurry
Element, 0.1 part of hydroxyethyl cellulose, 2 parts of polyacrylamides and 1 part of microemulsion WR-I, carry out high-speed stirring under the revolving speed of 800rpm
Mixing 0.5h is mixed, bentonite drilling fluid is obtained.
Embodiment 9: a kind of preparation method of bentonite drilling fluid, difference from example 1 is that, in step 2,
0.45 part of stearyl dimethyl benzyl ammonium chloride, 0.55 part of magnesium chloride, 0.2 part of hydroxylmethyl cellulose successively is added into base slurry
Element, 1 part of polyacrylamide, 1 part of polyethyene diamine and 1 part of microemulsion WR-I carry out high-speed stirred mixing under the revolving speed of 800rpm
0.5h obtains bentonite drilling fluid.
Embodiment 10: a kind of preparation method of bentonite drilling fluid, difference from example 1 is that, in step 2,
0.45 part of stearyl dimethyl benzyl ammonium chloride, 0.55 part of magnesium chloride, 0.2 part of hydroxylmethyl cellulose successively is added into base slurry
Element, 0.3 part of polyacrylamide, 0.3 part of polyethyene diamine, 0.4 part of polyethylene glycol ethylenediamine and 1 part of microemulsion WR-I, in 800rpm
Revolving speed under carry out high-speed stirred mix 0.5h, obtain bentonite drilling fluid.
Embodiment 11: a kind of preparation method of bentonite drilling fluid, difference from example 1 is that, in step 2,
0.45 part of stearyl dimethyl benzyl ammonium chloride, 0.55 part of magnesium chloride, 0.2 part of hydroxylmethyl cellulose successively is added into base slurry
It is mixed to carry out high-speed stirred under the revolving speed of 800rpm for element, 1 part of polyacrylamide, 1 part of microemulsion WR-I and 0.1 part of polyethylene glycol
0.5h is closed, bentonite drilling fluid is obtained.
Comparative example 1: a kind of preparation method of bentonite drilling fluid, difference from example 1 is that,
Sodium bentonite is added to the water by step 1, stirs 0.5h under heating conditions, and heating temperature is 45 DEG C, then
Maintenance 12h is carried out, base slurry is obtained；
Hydroxymethyl cellulose, polyacrylamide and microemulsion WR-I successively is added into base slurry, in the revolving speed of 800rpm in step 2
Lower progress high-speed stirred mixes 0.5h, obtains bentonite drilling fluid.
Comparative example 2: a kind of preparation method of bentonite drilling fluid, difference from example 1 is that,
Sodium bentonite is added to the water by step 1, stirs 0.5h under heating conditions, and heating temperature is 45 DEG C, then
Maintenance 12h is carried out, base slurry is obtained；
Successively stearyl dimethyl benzyl ammonium chloride, magnesium chloride, polyacrylamide and microemulsion is added into base slurry in step 2
WR-I carries out high-speed stirred under the revolving speed of 800rpm and mixes 0.5h, obtains bentonite drilling fluid.
Comparative example 3: a kind of preparation method of bentonite drilling fluid, difference from example 1 is that,
Sodium bentonite is added to the water by step 1, stirs 0.5h under heating conditions, and heating temperature is 45 DEG C, then
Maintenance 12h is carried out, base slurry is obtained；
Successively stearyl dimethyl benzyl ammonium chloride, magnesium chloride, hydroxymethyl cellulose and micro emulsion is added into base slurry in step 2
Liquid WR-I carries out high-speed stirred under the revolving speed of 800rpm and mixes 0.5h, obtains bentonite drilling fluid.
Comparative example 4: a kind of preparation method of bentonite drilling fluid, difference from example 1 is that,
Sodium bentonite is added to the water by step 1, stirs 0.5h under heating conditions, and heating temperature is 45 DEG C, then
Maintenance 12h is carried out, base slurry is obtained；
Successively stearyl dimethyl benzyl ammonium chloride, magnesium chloride, hydroxymethyl cellulose and poly- third is added into base slurry in step 2
Acrylamide carries out high-speed stirred under the revolving speed of 800rpm and mixes 0.5h, obtains bentonite drilling fluid.
Performance test
Rheological property, filter loss and lubricity are carried out to bentonite drilling fluid made from embodiment 1-11 and comparative example 1-4 respectively
The test of energy, various tests are carried out according to " SY/T5060-93 " and industry relevant criterion.Wherein, rheological property uses ZNN-
The fast rotational viscometer of D6 six is measured；Filter loss uses main body for internal diameter 76.2mm, the tubular drilling fluid cup of height 64mm
Filtration device is measured, time interval 30min；Greasy property uses FANN extreme boundary lubrication instrument and sticking coefficient analyzer NF-2
It is measured, test result is shown in Table 2.
Wherein AP is apparent viscosity, and PV is plastic viscosity, and API filtration is to measure at normal temperature, as seen from the table, this hair
It is bright to have the advantages that reduction filter loss, retaining capacity is strong and seal-off effect is good.
2 the performance test results of table
| AP/ηa | PV/mpa.s | API filtration/mL | Lubricating coefficient | |
| Embodiment 1 | 3.2 | 2.8 | 3.6 | 0.086 |
| Embodiment 2 | 3.3 | 3 | 4.2 | 0.083 |
| Embodiment 3 | 3.3 | 3.1 | 4.1 | 0.085 |
| Embodiment 4 | 3.2 | 3 | 4 | 0.086 |
| Embodiment 5 | 3 | 3.1 | 4.2 | 0.093 |
| Embodiment 6 | 3.2 | 2.9 | 3.9 | 0.091 |
| Embodiment 7 | 5.5 | 4.2 | 3.2 | 0.092 |
| Embodiment 8 | 5.3 | 4.6 | 3.3 | 0.088 |
| Embodiment 9 | 5.6 | 4.3 | 3.3 | 0.089 |
| Embodiment 10 | 5.7 | 4.6 | 3.6 | 0.090 |
| Embodiment 11 | 8.2 | 7.8 | 3 | 0.088 |
| Comparative example 1 | 2.1 | 2.2 | 6 | 0.091 |
| Comparative example 2 | 2.3 | 2.3 | 6.3 | 0.093 |
| Comparative example 3 | 2.1 | 2.6 | 5.8 | 0.093 |
| Comparative example 4 | 1.8 | 2.3 | 5.6 | 0.199 |
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of bentonite drilling fluid, which is characterized in that the component including following parts by weight:
Water: 100 parts；
Bentonite: 8~10 parts；
Aminated compounds: 2~6 parts；
Cellulose family additive: 0.2~1 part；
Lubricant: 1~4 part；
Builder: 1~2 part.
2. bentonite drilling fluid according to claim 1, which is characterized in that the bentonite uses sodium bentonite.
3. bentonite drilling fluid according to claim 1, which is characterized in that the aminated compounds uses polyacrylamide
One of amine, polyethyene diamine and polyethylene glycol diamines are a variety of.
4. bentonite drilling fluid according to claim 1, which is characterized in that the cellulose family additive uses methylol
Cellulose and/or hydroxyethyl cellulose.
5. bentonite drilling fluid according to claim 1, which is characterized in that the lubricant uses microemulsion WR-I.
6. bentonite drilling fluid according to claim 1, which is characterized in that the builder includes that weight fraction ratio is
1:(1.2~7) ammonium salt and magnesium salts, wherein ammonium salt use stearyl dimethyl benzyl ammonium chloride, magnesium salts use magnesium chloride.
7. bentonite drilling fluid according to claim 1, which is characterized in that further include that parts by weight are in raw material components
0.1~2 part of polyethylene glycol.
8. a kind of preparation method of bentonite drilling fluid, which comprises the following steps:
Step 1 takes the water of corresponding parts by weight, and bentonite is added, and stirs 0.5~0.75h, and then maintenance is handled, and makes bentonite
Abundant aquation obtains base slurry；
Successively builder, cellulose family additive, aminated compounds and lubricant is added into base slurry in step 2,800~
High-speed stirred is carried out under the revolving speed of 2000rpm and mixes 0.5~0.75h, obtains bentonite drilling fluid.
9. the preparation method of bentonite drilling fluid according to claim 8, which is characterized in that in step 1, curing time
For 12~for 24 hours.
10. the preparation method of bentonite drilling fluid according to claim 8, which is characterized in that in step 1, whipping process
Heated, heating temperature is 45~60 DEG C.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965549A (en) * | 2019-12-17 | 2020-04-07 | 广东省水利水电第三工程局有限公司 | Cast-in-situ bored pile construction method |
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