CN104179466B - The method reducing fluid loss in probing - Google Patents
The method reducing fluid loss in probing Download PDFInfo
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- CN104179466B CN104179466B CN201310189071.6A CN201310189071A CN104179466B CN 104179466 B CN104179466 B CN 104179466B CN 201310189071 A CN201310189071 A CN 201310189071A CN 104179466 B CN104179466 B CN 104179466B
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- carboxylic acid
- fluid loss
- mud
- probing
- sodium hydroxide
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Abstract
The invention provides a kind of method reducing fluid loss in probing, including a) mixing linear paraffin carboxylic acid, olefin carboxylic acid and cycloalkane carboxylic acid, obtain mixture of carboxylic acids；B) heating mixed carboxylic acid's mixture and sodium hydroxide solution, obtain mixed carboxylic acid's salt；And c) according to the 1 ~ 3% of quality of mud fluid mark, be added to mixed carboxylic acid's salt and stir.The method reducing fluid loss in probing, improves the quality of hydration shell in mud skin, makes the fluid loss of former mud decline.
Description
Technical field
The present invention relates to a kind of method reducing fluid loss, particularly relate to a kind of in geological drilling engineering, the method reducing the fluid loss as flushing liquor mud.
Background technology
In geological drilling engineering, mud is generally used to creep into the flushing liquor of work surface as drill bit.Mud, as creeping into the circulation flushing medium of work surface, is the important means of the troublesome zone drilling operating modes such as reply broken, the leakage of boring.Meanwhile, mud also has stable borehole wall, prevents hole wall aquation and the function caved in.Therefore the fluid loss of mud is important performance parameter.
The fluid loss of mud is the most important performance parameter of mud, and fluid loss is the biggest, and the performance of mud is the poorest, holes the most unstable.But, mud, in recycling, owing to pressure reduction increases, puies forward the reason such as the pressure of the drill fluctuation and mud cortex amount in drilling well, directly results in the increase of fluid loss in cyclic process.
Summary of the invention
It is an object of the invention to provide a kind of method reducing fluid loss in probing, to reduce mud fluid loss in drilling process, keep stablizing of boring.
The invention provides a kind of method reducing fluid loss in probing, including a) mixing linear paraffin carboxylic acid, olefin carboxylic acid and cycloalkane carboxylic acid, obtain mixture of carboxylic acids；B) heating mixed carboxylic acid's mixture and sodium hydroxide solution, obtain mixed carboxylic acid's salt；And c) according to the 1 ~ 3% of quality of mud fluid mark, be added to mixed carboxylic acid's salt and stir.
Reducing in the method for fluid loss in probing, containing numerous strong hydrophilicity bases and some absorption bases in the mixed carboxylic acid's salt structure prepared, these groups are so that mud particle is stably distributed in mud.After mixed carboxylic acid's salt is added in mud and stirred, add the viscosity of F, improve the quality of hydration shell in mud skin, make the fluid loss of former mud decline.
In another the schematic embodiment of the method reducing fluid loss in probing, mixture of carboxylic acids is linear paraffin carboxylic acid, olefin carboxylic acid and the mixture of cycloalkane carboxylic acid that carbon number is more than or equal to 12.
In the another kind of schematically embodiment of the method reducing fluid loss in probing, mixture of carboxylic acids is mixed to get according to mass ratio 1:2 by linoleic acid and rosin acid.
In another the schematic embodiment of the method reducing fluid loss in probing, the mass fraction of sodium hydroxide solution is that in 25 ~ 35%, and mixture of carboxylic acids, the addition of sodium hydroxide solution is the 10 ~ 20% of carboxylic acid quality.
In another the schematic embodiment of the method reducing fluid loss in probing, in step a, the heating-up temperature of mixture of carboxylic acids and sodium hydroxide solution is 70 ~ 80 DEG C, and incorporation time is 1 ~ 2 hour.
Hereafter by the way of the most understandable, accompanying drawings preferred embodiment, above-mentioned characteristic, technical characteristic, advantage and the implementation thereof of the method reducing fluid loss in probing is further described.
Detailed description of the invention
In order to technical characteristic, purpose and the effect of invention are more clearly understood from, the detailed description of the invention of the present invention is described in conjunction with following example.
Embodiment one.
Raw material:
Sodium hydroxide solution, is added distilled water preparation by commercial technical pure sodium hydroxide powder and obtains, and the concentration of sodium hydroxide solution is 25%(mass fraction)；
Linoleic acid, commercial, the most linoleic it is mainly composed of the long straight-chain alkane carboxylic acid more than 12 of carbon number in carbochain and olefin carboxylic acid；
Rosin acid, commercial, wherein rosin acid is the carbon number cycloalkane carboxylic acid more than 12 in carbochain.
Preparation process:
A) linoleic acid and rosin acid are mixed in 1:2 ratio (mass ratio), obtain mixture of carboxylic acids；
B) in the mixture of carboxylic acids obtained, sodium hydroxide solution is added, preparation mixed carboxylic acid's salt, wherein the addition of sodium hydroxide solution is the 10%(mass fraction of mixture of carboxylic acids), when mixture of carboxylic acids reacts with sodium hydroxide solution, heated and stirred 1 hour, and heating-up temperature is 70 DEG C；
C) the mixed carboxylic acid's salt prepared being added in the mud of irrigation and stirred, wherein the addition of mixed carboxylic acid's salt is the 1%(mass fraction of mud).
Vapour-pressure type filter press is used to carry out the mensuration of fluid loss.Instrument maximal pressure difference is 10MPa, and the current gradient scope that mud produces relative to filter surface is 0 ~ 500-1Between convert.By 2.2 liters of mud rock core by 3 ~ 18cm length, the amount of filtrate by instrument end filter opening can be recorded, thus obtain the fluid loss of mud.In the probing in certain mining area, the method using the present embodiment, the fluid loss of mud drops to 18ml/30min from 28ml/30min, and fluid loss declines about 35.7%, maintains stablizing of boring, it is ensured that creeps into is smoothed out.
Reducing in the method for fluid loss in probing, containing numerous strong hydrophilicity bases and some absorption bases in the mixed carboxylic acid's salt structure prepared, these groups are so that mud particle is stably distributed in mud.After mixed carboxylic acid's salt is added in mud and stirred, add the viscosity of F, improve the quality of hydration shell in mud skin, make the fluid loss of former mud decline.
Embodiment two.
Raw material:
Sodium hydroxide solution, is added distilled water preparation by commercial technical pure sodium hydroxide powder and obtains, and the concentration of sodium hydroxide solution is 25%(mass fraction)；
Linoleic acid, commercial, the most linoleic it is mainly composed of the long straight-chain alkane carboxylic acid more than 12 of carbon number in carbochain and olefin carboxylic acid；
Rosin acid, commercial, wherein rosin acid is the carbon number cycloalkane carboxylic acid more than 12 in carbochain.
Preparation process:
A) linoleic acid and rosin acid are mixed in 1:2 ratio (mass ratio), obtain mixture of carboxylic acids；
B) in the mixture of carboxylic acids obtained, sodium hydroxide solution is added, preparation mixed carboxylic acid's salt, wherein the addition of sodium hydroxide solution is the 15%(mass fraction of mixture of carboxylic acids), when mixture of carboxylic acids reacts with sodium hydroxide solution, heated and stirred 1 hour, and heating-up temperature is 75 DEG C；
C) the mixed carboxylic acid's salt prepared being added in the mud of irrigation and stirred, wherein the addition of mixed carboxylic acid's salt is the 2%(mass fraction of mud).
Fluid loss measures
Vapour-pressure type filter press is used to carry out the mensuration of fluid loss.Instrument maximal pressure difference is 10MPa, and the current gradient scope that mud produces relative to filter surface is 0 ~ 500-1Between convert.By 2.2 liters of mud rock core by 3 ~ 18cm length, the amount of filtrate by instrument end filter opening can be recorded, thus obtain the fluid loss of mud.
In the probing in certain mining area, making the fluid loss of mud drop to 17ml/30min from previous fluid loss 28ml/30min, fluid loss declines about 39.3%, maintains stablizing of boring, it is ensured that creeps into is smoothed out.
Embodiment three.
Raw material:
Sodium hydroxide solution, is added distilled water preparation by commercial technical pure sodium hydroxide powder and obtains, and the concentration of sodium hydroxide solution is 25%(mass fraction)；
Linoleic acid, commercial, the most linoleic it is mainly composed of the long straight-chain alkane carboxylic acid more than 12 of carbon number in carbochain and olefin carboxylic acid；
Rosin acid, commercial, wherein rosin acid is the carbon number cycloalkane carboxylic acid more than 12 in carbochain.
Preparation process
A) linoleic acid and rosin acid are mixed in 1:2 ratio (mass ratio), obtain mixture of carboxylic acids；
B) in the mixture of carboxylic acids obtained, sodium hydroxide solution is added, preparation mixed carboxylic acid's salt, wherein the addition of sodium hydroxide solution is the 20%(mass fraction of mixture of carboxylic acids), when mixture of carboxylic acids reacts with sodium hydroxide solution, heated and stirred 2 hours, and heating-up temperature is 80 DEG C；
C) the mixed carboxylic acid's salt prepared being added in the mud of irrigation and stirred, wherein the addition of mixed carboxylic acid's salt is the 3%(mass fraction of mud).
Fluid loss measures
Vapour-pressure type filter press is used to carry out the mensuration of fluid loss.Instrument maximal pressure difference is 10MPa, and the current gradient scope that relative filter surface produces is 0 ~ 500-1Between convert.By 2.2 liters of mud rock core by 3 ~ 18cm length, the amount of filtrate by instrument end filter opening can be recorded, thus obtain the fluid loss of mud.
In the probing in certain mining area, making the fluid loss of mud drop to 16ml/30min from previous fluid loss 28ml/30min, fluid loss declines about 42.9%, maintains stablizing of boring, it is ensured that creeps into is smoothed out.
In this article, " schematically " expression " serves as example, example or explanation ", not should by being described herein as any diagram of " schematically ", embodiment is construed to a kind of preferred or more advantage technical scheme.
It is to be understood that, although this specification describes according to each embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should be using description as an entirety, technical scheme in each embodiment can also form, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that.
The a series of detailed description of those listed above is only for illustrating of the possible embodiments of the present invention; they also are not used to limit the scope of the invention, and all Equivalent embodiments or changes made without departing from skill of the present invention spirit should be included within the scope of the present invention.
Claims (3)
1. the method reducing fluid loss in probing, including:
A) it is mixed to get mixture of carboxylic acids by linoleic acid and rosin acid according to mass ratio 1:2；
B) heating mixed carboxylic acid's mixture and sodium hydroxide solution, obtain mixed carboxylic acid's salt；With
C) according to the 1 ~ 3% of described quality of mud fluid mark, it is added to described mixed carboxylic acid's salt and stirs.
2. the method reducing fluid loss in probing as claimed in claim 1, the mass fraction of wherein said sodium hydroxide solution is 25 ~ 35%, and 10 ~ 20% that the addition of described sodium hydroxide solution is described mixture of carboxylic acids quality.
3. the method reducing fluid loss in probing as claimed in claim 1, the most in stepb, the heating-up temperature of described mixture of carboxylic acids and described sodium hydroxide solution is 70 ~ 80 DEG C, and incorporation time is 1 ~ 2 hour.
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| CN104179466B true CN104179466B (en) | 2016-08-24 |
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| CN108005610A (en) * | 2017-10-13 | 2018-05-08 | 中国煤炭地质总局第勘探局 | Deep drilling retaining wall leak-stopping technique |
| CN109957382A (en) * | 2017-12-26 | 2019-07-02 | 中矿资源勘探股份有限公司 | A kind of preparation method of the closure slurries for core drilling |
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| US4309523A (en) * | 1979-08-06 | 1982-01-05 | Cassella Aktiengesellschaft | Water-soluble copolymer of acrylamidomethylpropanesulfonic acids salts |
| CN101397491A (en) * | 2008-10-27 | 2009-04-01 | 中国科学院长春应用化学研究所 | Multi-element co-polymerization oil well cement fluid loss additive and preparation method thereof |
| CN101412600A (en) * | 2008-11-20 | 2009-04-22 | 中国石油天然气集团公司 | Oilwell cement filtrate loss reduction additive |
| CN101805595A (en) * | 2010-04-16 | 2010-08-18 | 北京化工大学 | Synthesis method of drilling fluid filtrate reducer |
| CN102040988A (en) * | 2009-10-09 | 2011-05-04 | 中国石油化工集团公司 | Oil field well cementation filtration-reducing agent and preparation method thereof |
| CN102516954A (en) * | 2011-10-31 | 2012-06-27 | 扬州润达油田化学剂有限公司 | Fluid loss agent and production method thereof |
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2013
- 2013-05-21 CN CN201310189071.6A patent/CN104179466B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4309523A (en) * | 1979-08-06 | 1982-01-05 | Cassella Aktiengesellschaft | Water-soluble copolymer of acrylamidomethylpropanesulfonic acids salts |
| CN101397491A (en) * | 2008-10-27 | 2009-04-01 | 中国科学院长春应用化学研究所 | Multi-element co-polymerization oil well cement fluid loss additive and preparation method thereof |
| CN101412600A (en) * | 2008-11-20 | 2009-04-22 | 中国石油天然气集团公司 | Oilwell cement filtrate loss reduction additive |
| CN102040988A (en) * | 2009-10-09 | 2011-05-04 | 中国石油化工集团公司 | Oil field well cementation filtration-reducing agent and preparation method thereof |
| CN101805595A (en) * | 2010-04-16 | 2010-08-18 | 北京化工大学 | Synthesis method of drilling fluid filtrate reducer |
| CN102516954A (en) * | 2011-10-31 | 2012-06-27 | 扬州润达油田化学剂有限公司 | Fluid loss agent and production method thereof |
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