CN108276978A - A kind of underground coal mine is with boring anti-collapse type flushing liquor and preparation method thereof - Google Patents
A kind of underground coal mine is with boring anti-collapse type flushing liquor and preparation method thereof Download PDFInfo
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- CN108276978A CN108276978A CN201810282619.4A CN201810282619A CN108276978A CN 108276978 A CN108276978 A CN 108276978A CN 201810282619 A CN201810282619 A CN 201810282619A CN 108276978 A CN108276978 A CN 108276978A
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- flushing liquor
- preparation
- brill
- collapse type
- coal mine
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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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
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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
- C09K8/5083—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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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
- C09K2208/02—Spotting, i.e. using additives for releasing a stuck drill
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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
- C09K2208/18—Bridging agents, i.e. particles for temporarily filling the pores of a formation; Graded salts
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of underground coal mines with anti-collapse type flushing liquor and preparation method thereof is bored, and is mainly used for the drilling construction process of underground coal mine.What the present invention obtained rinses formula of liquid with the anti-collapse type of brill is：3~4kg of thickening host agent is added in per cubic meter of water；4~5kg of auxiliary tackifier；4~5kg of flocculant；3~5kg of biological enzyme；40~50kg of bentonite.A kind of underground coal mine of the present invention is simple with anti-collapse type flushing liquid and preparation method thereof is bored, and works well, has good rheological property, anti-collapse wall building property, degradability while having stronger shearing force and taking cinder ability.
Description
Technical field
The present invention relates to coal mine down-hole drilling flushing liquor technical fields more particularly to a kind of underground coal mine with the anti-collapse type of brill
Flushing liquor and preparation method thereof.
Background technology
During drilling construction, to accelerate drilling progress, frequently with the effective deslagging of drilling fluid.Due to mining influence,
Stress raisers are will produce around drilling, coal body mechanical property can also be substantially change under the influence of flushing liquor in addition,
Borehole wall unstability is the thorny problem being commonly encountered in drilling process.Hole wall unstability can cause to cave in, the leakage of diameter contracting bit freezing, drill-in fluid
It loses, eventually leads to drilling and scrap.The factor that analysis borehole instability caves in, it can be found that since stress concentration caused by adopting can not
Artificial control, and the selection of drilling fluid can be then to solve the problems, such as this effective break-through point.Currently, common flushing liquor
As the main purpose with hole drilling deslagging, the retaining wall function of flushing liquor is had ignored, the probability of hole wall collapse destruction may be increased instead.
Therefore, it is necessary to be equipped with a kind of underground coal mine with anti-collapse type flushing liquor is bored, the same of cinder ability is taken more by force having
When can also have the function of that certain retaining wall is anti-collapse.
Invention content
To solve, coal mine gas extraction borehole drilling process normal developing liquid deslagging ability is limited and hole wall easily caves in
The problem of, the present invention is directed to technological deficiency present in the application process of existing flushing liquor, and it is anti-with boring to provide a kind of underground coal mine
The type that collapses flushing liquor and preparation method thereof takes that cinder ability is strong and the anti-collapse good purpose of wall building function to reach.
The invention discloses a kind of with the outfit scheme for boring anti-collapse type flushing liquor, the preparation method used for：Every cubic metre
3~4kg of thickening host agent is added in water；4~5kg of auxiliary tackifier；4~5kg of flocculant；3~5kg of biological enzyme；Bentonite 40~
50kg.Should have good rheological property, anti-collapse wall building property, degradability with anti-collapse type flushing liquor is bored, at the same have compared with
Strong shearing force and take cinder ability.
The thickening host agent is sanlose, and wherein sanlose is that glucose polymerization degree is
100~2000 cellulose derivative is made of the etherified reaction of alkali cellulose and chlorethanol, and relative molecular mass is
242.16, tackifying effect is mainly played in the polymer drilling fluid, distinguishing feature is not increase shearing force while thickening.
The auxiliary tackifier is sesbania gum, and wherein sesbania gum is extracted from the endosperm of legume sesbania
Polysaccharide gelatinous polymer acts on filtrate reducing as tackifier, while having excellent shear thinning performance, Neng Gouyou
Effect ground improves the flow pattern of flushing liquor.
The flocculant is non-ionic polyacrylamide, and the molecular weight of non-ionic polyacrylamide is 200-1200 ten thousand.
The biological enzyme is cellulase, and cellulase is a kind of multigroup part of compound bio catalyst, by micro-
Biology is generated through everfermentation.
The swelled ground chooses sodium base swelled ground, which can form good mudcake, have preferable wall building
Performance.
A kind of underground coal mine is with boring anti-collapse type flushing liquor and preparation method thereof, which is characterized in that the preparation master of the flushing liquor
It to include following technological process：
A, base fluid is prepared：Thickening host agent, auxiliary tackifier, flocculant is added into water successively according to formula rate.It is added every time
It is stirred when reagent, mixing time is 0.5 hour, and mixture 1 is obtained after the completion of configuration.
B, the time of standing mixt 1 at 12 hours or more, bentonite is added into mixture 1 according to formula rate, stirring is equal
It is even, obtain mixture 2.
C, before underground boring construction in 1-2 hours, biological enzyme is added according to formula rate into mixture 2, stirring is stood,
It obtains with the anti-collapse type flushing liquor of brill.
Beneficial effects of the present invention are mainly manifested in the following aspects：
(1) provided by the invention to play good anti-collapse retaining wall effect with the anti-collapse type flushing liquor of brill, Various Complex can be suitable for
Landform.While rinsing cinder, fine and close mudcake can be formed on borehole wall, to safeguard hole wall to a certain extent
Stability.
(2) the effect of capable of playing good carrying suspension cinder with the anti-collapse type flushing liquor of brill provided by the invention.The flushing liquor
Middle addition has suitable flocculant and auxiliary tackifier, and the reticular structure that liquid internal can be made to keep intensity larger makes its tool
There is good carrying cinder ability.
(3) sesbania gum in the present invention has the effect of thickening and filtrate reducing concurrently, by adjusting sesbania gum and sodium carboxymethylcellulose
Ratio, can make to need smaller liquidity index with boring anti-collapse type flushing liquor and have, and then ensure good shear thinning behavior.
(4) sanlose in the present invention can play tackifying effect, be cut it is advantageous that not increasing while thickening
Shear force.
(5) it can be rinsed by controlling the outfit ratio control of bentonite and non-ionic polyacrylamide with anti-collapse type is bored in the present invention
The density of liquid makes it be applicable in the coal seam under different condition, to realize good plugging effect.
(6) provided by the invention with anti-collapse type flushing liquor is bored in the presence of biology enzyme with good degradation function, it can bore
The degradation for realizing mudcake after the completion of the construction of hole in 40 hours, restores the Penetration Signature in coal seam.
Description of the drawings
Fig. 1 is enzyme front and back flushing liquor apparent viscosity effect contrast figure；
Fig. 2 is enzyme front and back flushing liquor plastic viscosity effect contrast figure；
Specific implementation mode
Preparation method 1
With the anti-collapse type flushing liquor laboratory experiment of brill：Thickening host agent 1.5g, auxiliary tackifier are sequentially added in 500ml clear water
2.0g, flocculant 2.5g are sufficiently stirred 0.5 hour, stand 12 hours, are obtained with the anti-collapse type flushing liquor base fluid of brill.Into base fluid
20g bentonites are added, stir evenly to get described with the anti-collapse type flushing liquor of brill.
Preparation method 2
With the anti-collapse type flushing liquor laboratory experiment of brill：Thickening host agent 1.0g, auxiliary tackifier are sequentially added in 500ml clear water
1.5g, flocculant 2.0g are sufficiently stirred 0.5 hour, stand 12 hours, are obtained with the anti-collapse type flushing liquor base fluid of brill.Into base fluid
25g bentonites are added, stir evenly to get described with the anti-collapse type flushing liquor of brill.
Preparation method 3
With the anti-collapse type flushing liquor laboratory experiment of brill：Thickening host agent 2.0g, auxiliary tackifier are sequentially added in 500ml clear water
2.0g, flocculant 1.0g are sufficiently stirred 0.5 hour, stand 12 hours, are obtained with the anti-collapse type flushing liquor base fluid of brill.Into base fluid
25g bentonites are added, stir evenly to get described with the anti-collapse type flushing liquor of brill.
It is every basic with anti-collapse type flushing liquor progress is bored to configuring on the basis of completing three kinds of different preparation methods
Performance test is carried out at the same time decomposability test.Fully preferably obtaining its formula is, according to mass fraction meter：4% bentonite+
+ 0.5% non-ionic polyacrylamide of+0.4% sesbania gum of 0.3% sanlose.
(1) basic performance is tested：Main density including flushing liquor, rheological characteristic (including apparent viscosity, plastic viscosity, yield value,
Gel strength, liquidity index, consistency coefficient), the performance tests such as leak-off, wherein flushing liquor density is apt to moral oil instrument by Qingdao has
The ZYM type liquid densimeters of limit company production are tested, and measurement range is 0.96~3.0g/cm3, measurement accuracy 0.01g/
cm3；The fast rotational viscometer of ZNN-D6B types six that the rheological characteristic of flushing liquor is produced by Qingdao Shan De oil Instrument Ltd. carries out
Test；Filter press is pressed to be tested in the ZNS types that the leak-off of flushing liquor is produced by Qingdao Shan De oil Instrument Ltd., work
It is 0.69MPa ± 35kPa to make pressure.Specific test result is shown in Table 1.
13 kinds of preparation method basic performance measurement result comparisons of table
The flushing liquor rheological characteristic that preparation method 1 obtains as can be seen from Table 1 is excellent, and filter loss is relatively low, and mudcake thickness is thin and compact,
Yield value and gel strength are higher, can reach preferable and carry cinder ability and excellent anti-collapse plugging effect.
(2) cinder performance test is carried with the anti-collapse type flushing liquor base fluid of brill：Thickening host agent is sequentially added in 500ml clear water
1.5g, auxiliary tackifier 2.0g, flocculant 2.5g are sufficiently stirred 0.5 hour, stand 12 hours, obtain rinsing with the anti-collapse type of brill
Liquid-based liquid；60 mesh coal dust 30g, uniform stirring are added into base fluid.Simultaneously be added into 500ml clear water same coal dust 30g into
Row contrast experiment.Experimental result be shown in the flushing liquor be added coal dust be sufficiently stirred standing 10 hours in, coal dust can be kept
Uniform suspended state.Coal dust in clear water will appear apparent deposited phenomenon in 5 hours in experiment.Illustrate that the anti-collapse type rinses
Liquid has the ability of good suspension coal dust, disclosure satisfy that the requirement of carrying cinder during drilling construction.
(3) with the anti-collapse type flushing liquor retaining wall performance test of brill：Thickening host agent 1.5g is sequentially added in 500ml clear water, auxiliary increases
Stick 2.0g, flocculant 2.5g are sufficiently stirred 0.5 hour, stand 12 hours, are obtained with the anti-collapse type flushing liquor base fluid of brill；Xiang Ji
25g bentonites are added in liquid, stir evenly, obtain described with boring anti-collapse type flushing liquor；60 mesh coal dust 30g are taken, clear water is added
Coal briquette is made, puts it into and fills in the flushing liquor beaker, stability of the observation coal briquette in flushing liquor.Experimental result is shown
Coal briquette can keep overall shape in 10 hours, illustrate that the flushing liquor has good retaining wall effect.
Preparation method 4
With the anti-collapse type flushing liquor degradability laboratory experiment of brill：Thickening host agent 1.5g, auxiliary are sequentially added in 500ml clear water
Tackifier 2.0g, flocculant 2.5g are sufficiently stirred 0.5 hour, stand 12 hours, are obtained with the anti-collapse type flushing liquor base fluid of brill.To
20g bentonites are added in base fluid, stir evenly to get described with the anti-collapse type flushing liquor of brill.To in the anti-collapse type flushing liquor of brill
2.5g biological enzyme is added, stirs evenly, measures the degradable effect for preparing gained flushing liquor, experimental result such as attached drawing 1 and attached drawing 2
It is shown.
Such as the effect contrast figure in attached drawing 1 and attached drawing 2 it can be found that the apparent viscosity and plastic viscosity of enzyme overflush fluid are in
Rule is now significantly reduced, it can be seen that there is good degradation with boring anti-collapse type flushing liquor and being added after cellulase
Effect also illustrates that the flushing liquor prepared can realize effective degradation of mudcake after the completion of drilling construction in a period of time,
To restore the Penetration Signature in coal seam.
Claims (7)
1. a kind of underground coal mine is with anti-collapse type flushing liquor of brill and preparation method thereof, it is characterised in that：A kind of underground coal mine is anti-with boring
The preparation method of the type that collapses flushing liquor is：3~4kg of thickening host agent is added in per cubic meter of water；4~5kg of auxiliary tackifier；Flocculant
4~5kg；3~5kg of biological enzyme；40~50kg of bentonite should have good rheological property, anti-collapse with anti-collapse type flushing liquor is bored
Wall building property, degradability while there is stronger shearing force and take cinder ability.
2. a kind of underground coal mine according to claim 1 is with anti-collapse type flushing liquor of brill and preparation method thereof, it is characterised in that：
The thickening host agent be sanlose, wherein sanlose be glucose polymerization degree be 100~
2000 cellulose derivative is made, relative molecular mass 242.16 of the etherified reaction of alkali cellulose and chlorethanol,
Tackifying effect is mainly played in the polymer drilling fluid, distinguishing feature is not increase shearing force while thickening.
3. a kind of underground coal mine according to claim 1 is with anti-collapse type flushing liquor of brill and preparation method thereof, it is characterised in that：
The auxiliary tackifier is sesbania gum, and wherein sesbania gum is the polysaccharide glue extracted from the endosperm of legume sesbania
Matter polymer acts on filtrate reducing as tackifier, while having excellent shear thinning performance, can effectively improve
The flow pattern of flushing liquor.
4. a kind of underground coal mine according to claim 1 is with anti-collapse type flushing liquor of brill and preparation method thereof, it is characterised in that：
The flocculant is non-ionic polyacrylamide, and the molecular weight of non-ionic polyacrylamide is 200-1200 ten thousand.
5. a kind of underground coal mine according to claim 1 is with anti-collapse type flushing liquor of brill and preparation method thereof, which is characterized in that
The biological enzyme is cellulase, and cellulase is a kind of multigroup part of compound bio catalyst, is passed through by microorganism
Fermentation generates.
6. a kind of underground coal mine according to claim 1 is with anti-collapse type flushing liquor of brill and preparation method thereof, it is characterised in that：
The swelled ground chooses sodium base swelled ground, which can form good mudcake, have preferable wall building property.
7. a kind of underground coal mine according to claim 1 is with anti-collapse type flushing liquor of brill and preparation method thereof, it is characterised in that：
A kind of preparation method with the anti-collapse type flushing liquor of brill includes mainly following technological process：
A, base fluid is prepared：Thickening host agent, auxiliary tackifier, flocculant is added into water successively according to formula rate.It is added every time
It is stirred when reagent, mixing time is 0.5 hour, and mixture 1 is obtained after the completion of configuration.
B, the time of standing mixt 1 at 12 hours or more, bentonite is added into mixture 1 according to formula rate, stirring is equal
It is even, obtain mixture 2.
C, before underground boring construction in 1-2 hours, biological enzyme is added according to formula rate into mixture 2, stirring is stood,
It obtains with the anti-collapse type flushing liquor of brill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810282619.4A CN108276978A (en) | 2018-04-02 | 2018-04-02 | A kind of underground coal mine is with boring anti-collapse type flushing liquor and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810282619.4A CN108276978A (en) | 2018-04-02 | 2018-04-02 | A kind of underground coal mine is with boring anti-collapse type flushing liquor and preparation method thereof |
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| CN108276978A true CN108276978A (en) | 2018-07-13 |
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| CN201810282619.4A Pending CN108276978A (en) | 2018-04-02 | 2018-04-02 | A kind of underground coal mine is with boring anti-collapse type flushing liquor and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109796947A (en) * | 2019-01-29 | 2019-05-24 | 青海煤炭地质一0五勘探队 | A kind of drilling fluid and preparation method thereof that caving-preventing characteristic is excellent |
| CN114854378A (en) * | 2022-04-21 | 2022-08-05 | 煤炭科学技术研究院有限公司 | Degradable hole washing liquid additive for mines and preparation method and use method thereof |
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| CN103525381A (en) * | 2012-07-04 | 2014-01-22 | 长江大学 | Horizontal well drilling fluid for protecting coal bed gas reservoir |
| CN105062435A (en) * | 2015-07-29 | 2015-11-18 | 长江大学 | Micromolecular drilling fluid for coal bed gas horizontal wells |
| CN105349120A (en) * | 2015-11-23 | 2016-02-24 | 中国地质大学（武汉） | Micro solid-phase drilling fluid used for coal-seam-following coal seam gas well and capable of timed degradation and timed degradation method thereof |
| CN106673523A (en) * | 2016-12-27 | 2017-05-17 | 中交第二航务工程局有限公司 | Protective mud applicable to pore forming by rotary drilling rig in geology of thick sand layer and preparation method of protective mud |
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| CN102516957A (en) * | 2011-12-06 | 2012-06-27 | 中国地质大学（武汉） | Degradable drilling fluid used for drilling in soft coal seam |
| CN103525381A (en) * | 2012-07-04 | 2014-01-22 | 长江大学 | Horizontal well drilling fluid for protecting coal bed gas reservoir |
| CN103396771A (en) * | 2013-07-24 | 2013-11-20 | 中国地质大学（武汉） | Degradable drilling fluid based on nano material |
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| CN105349120A (en) * | 2015-11-23 | 2016-02-24 | 中国地质大学（武汉） | Micro solid-phase drilling fluid used for coal-seam-following coal seam gas well and capable of timed degradation and timed degradation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109796947A (en) * | 2019-01-29 | 2019-05-24 | 青海煤炭地质一0五勘探队 | A kind of drilling fluid and preparation method thereof that caving-preventing characteristic is excellent |
| CN114854378A (en) * | 2022-04-21 | 2022-08-05 | 煤炭科学技术研究院有限公司 | Degradable hole washing liquid additive for mines and preparation method and use method thereof |
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Application publication date: 20180713 |