CN104179466A - Method of reducing water loss of slurry in drilling - Google Patents
Method of reducing water loss of slurry in drilling Download PDFInfo
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- CN104179466A CN104179466A CN201310189071.6A CN201310189071A CN104179466A CN 104179466 A CN104179466 A CN 104179466A CN 201310189071 A CN201310189071 A CN 201310189071A CN 104179466 A CN104179466 A CN 104179466A
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- carboxylic acid
- fluid loss
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- sodium hydroxide
- mud
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Abstract
The invention provides a method of reducing water loss of slurry in drilling. The method comprises the following steps of a) mixing straight-chain paraffin carboxylic acid, olefin carboxylic acid and cycloparaffin carboxylic acid to obtain a carboxylic acid mixture; b) heating and mixing the carboxylic acid mixture and sodium hydroxide solution to obtain mixed carboxylate; c) adding the mixed carboxylate according to 1-3% of the mass fraction of the slurry and uniformly stirring. According to the method of reducing the water loss of the slurry in drilling, the quality of a hydration shell in a mud cake is improved, so that the original water loss of the slurry is reduced.
Description
Technical field
The present invention relates to a kind of method that reduces fluid loss, relate in particular to a kind ofly for geological drilling engineering, reduce the method as the fluid loss of flushing liquor mud.
Background technology
In geological drilling engineering, conventionally use mud as drill bit, to creep into the flushing liquor of work plane.Mud, as the cyclic flusher medium that creeps into work plane, is the important means of the troublesome zone drilling operating modes such as reply boring fragmentation, leakage.Meanwhile, mud also has stable borehole wall, prevents hole wall aquation and the function of caving 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 larger, and the performance of mud is poorer, holes more unstable.Yet mud, in recycling, because pressure reduction in drilling well increases, puies forward the reasons such as the pressure of the drill fluctuation and mud cortex amount, directly causes the increase of fluid loss in cyclic process.
Summary of the invention
The object of this invention is to provide a kind of method that reduces fluid loss in probing, to reduce the fluid loss of mud in drilling process, keep the stable of boring.
The invention provides a kind of method that reduces fluid loss in probing, comprise and a) mix 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 1 ~ 3% of quality of mud fluid mark, add wherein mixed carboxylic acid's salt and stir.
In probing, reduce in the method for fluid loss, contain numerous strong hydrophilicity bases and some absorption base in the mixed carboxylic acid's salt structure making, these groups can be so that mud particle be stably distributed in mud.Mixed carboxylic acid's salt is added in mud and after stirring, increased the viscosity of F, improved the quality of hydration shell in mud skin, the fluid loss of former mud is declined.
In probing, reduce in another schematic embodiment of method of fluid loss, mixture of carboxylic acids is the mixture that carbon number is more than or equal to 12 linear paraffin carboxylic acid, olefin carboxylic acid and cycloalkane carboxylic acid.
In probing, reduce in the schematic embodiment of another kind of method of fluid loss, mixture of carboxylic acids is mixed to get according to mass ratio 1:2 by linoleic acid and rosin acid.
In probing, reduce in another schematic embodiment of method of fluid loss, the mass fraction of sodium hydroxide solution is 25 ~ 35%, and in mixture of carboxylic acids, the addition of sodium hydroxide solution is 10 ~ 20% of carboxylic acid quality.
In probing, reduce in another schematic embodiment of method of fluid loss, in step a, the heating-up temperature of mixture of carboxylic acids and sodium hydroxide solution is 70 ~ 80 ℃, and incorporation time is 1 ~ 2 hour.
Below, by the mode with clearly understandable, accompanying drawings preferred embodiment, is further described reducing above-mentioned characteristic, technical characterictic, advantage and the implementation thereof of the method for fluid loss in probing.
The specific embodiment
For technical characterictic, object and the effect of invention are had more clearly and understood, the existing the specific embodiment of the present invention that illustrates with the following Examples.
Embodiment mono-.
Raw material:
Sodium hydroxide solution, add distilled water preparation to obtain, and the concentration of sodium hydroxide solution is 25%(mass fraction by commercial technical pure sodium hydroxide powder);
Linoleic acid, commercial, wherein linoleic main component is long linear alkanecarboxylic acid and the olefin carboxylic acid that in carbochain, carbon number is greater than 12;
Rosin acid, commercial, wherein rosin acid is the cycloalkane carboxylic acid that in carbochain, carbon number is greater than 12.
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 obtaining, add sodium hydroxide solution, preparation mixed carboxylic acid salt, the 10%(mass fraction that wherein addition of sodium hydroxide solution is mixture of carboxylic acids), when mixture of carboxylic acids reacts with sodium hydroxide solution, add thermal agitation 1 hour, and heating-up temperature is 70 ℃;
C) the mixed carboxylic acid's salt preparing is added in the mud of irrigation and stirred, the 1%(mass fraction that wherein addition of mixed carboxylic acid's salt is mud).
Adopt vapour-pressure type filter press to carry out the mensuration of fluid loss.Instrument maximal pressure is poor is 10MPa, and the current gradient scope that the relative filter of mud surface produces is 0 ~ 500
-1between conversion.2.2 liters of mud, by the long rock core of 3 ~ 18cm, can be recorded by the amount of filtrate of instrument end filter opening, obtain thus the fluid loss of mud.In the probing in certain mining area, adopt the method for the present embodiment, the fluid loss of mud drops to 18ml/30min from 28ml/30min, and fluid loss declines approximately 35.7%, has maintained the stable of boring, and what guaranteed to creep into carries out smoothly.
In probing, reduce in the method for fluid loss, contain numerous strong hydrophilicity bases and some absorption base in the mixed carboxylic acid's salt structure making, these groups can be so that mud particle be stably distributed in mud.Mixed carboxylic acid's salt is added in mud and after stirring, increased the viscosity of F, improved the quality of hydration shell in mud skin, the fluid loss of former mud is declined.
Embodiment bis-.
Raw material:
Sodium hydroxide solution, add distilled water preparation to obtain, and the concentration of sodium hydroxide solution is 25%(mass fraction by commercial technical pure sodium hydroxide powder);
Linoleic acid, commercial, wherein linoleic main component is long linear alkanecarboxylic acid and the olefin carboxylic acid that in carbochain, carbon number is greater than 12;
Rosin acid, commercial, wherein rosin acid is the cycloalkane carboxylic acid that in carbochain, carbon number is greater than 12.
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 obtaining, add sodium hydroxide solution, preparation mixed carboxylic acid salt, the 15%(mass fraction that wherein addition of sodium hydroxide solution is mixture of carboxylic acids), when mixture of carboxylic acids reacts with sodium hydroxide solution, add thermal agitation 1 hour, and heating-up temperature is 75 ℃;
C) the mixed carboxylic acid's salt preparing is added in the mud of irrigation and stirred, the 2%(mass fraction that wherein addition of mixed carboxylic acid's salt is mud).
Fluid loss is measured
Adopt vapour-pressure type filter press to carry out the mensuration of fluid loss.Instrument maximal pressure is poor is 10MPa, and the current gradient scope that the relative filter of mud surface produces is 0 ~ 500
-1between conversion.2.2 liters of mud, by the long rock core of 3 ~ 18cm, can be recorded by the amount of filtrate of instrument end filter opening, obtain thus the fluid loss of mud.
In the probing in certain mining area, make the fluid loss of mud drop to 17ml/30min from previous fluid loss 28ml/30min, fluid loss declines approximately 39.3%, has maintained the stable of boring, and what guaranteed to creep into carries out smoothly.
Embodiment tri-.
Raw material:
Sodium hydroxide solution, add distilled water preparation to obtain, and the concentration of sodium hydroxide solution is 25%(mass fraction by commercial technical pure sodium hydroxide powder);
Linoleic acid, commercial, wherein linoleic main component is long linear alkanecarboxylic acid and the olefin carboxylic acid that in carbochain, carbon number is greater than 12;
Rosin acid, commercial, wherein rosin acid is the cycloalkane carboxylic acid that in carbochain, carbon number is greater than 12.
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 obtaining, add sodium hydroxide solution, preparation mixed carboxylic acid salt, the 20%(mass fraction that wherein addition of sodium hydroxide solution is mixture of carboxylic acids), when mixture of carboxylic acids reacts with sodium hydroxide solution, add thermal agitation 2 hours, and heating-up temperature is 80 ℃;
C) the mixed carboxylic acid's salt preparing is added in the mud of irrigation and stirred, the 3%(mass fraction that wherein addition of mixed carboxylic acid's salt is mud).
Fluid loss is measured
Adopt vapour-pressure type filter press to carry out the mensuration of fluid loss.Instrument maximal pressure is poor is 10MPa, and the current gradient scope that filter surface produces is relatively 0 ~ 500
-1between conversion.2.2 liters of mud, by the long rock core of 3 ~ 18cm, can be recorded by the amount of filtrate of instrument end filter opening, obtain thus the fluid loss of mud.
In the probing in certain mining area, make the fluid loss of mud drop to 16ml/30min from previous fluid loss 28ml/30min, fluid loss declines approximately 42.9%, has maintained the stable of boring, and what guaranteed to creep into carries out smoothly.
In this article, " schematically " expression " is served as example, example or explanation ", any diagram, the embodiment that are described in this article " schematically " should be interpreted as a kind of preferred or have more the technical scheme of advantage.
Be to be understood that, although this manual is described according to each embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of manual is only for clarity sake, those skilled in the art should make manual as a whole, technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Listed a series of detailed description is above only illustrating for feasibility embodiment of the present invention; they are not in order to limit the scope of the invention, all disengaging within equivalent embodiment that skill spirit of the present invention does or change all should be included in protection scope of the present invention.
Claims (5)
1. in probing, reduce the method for fluid loss, comprising:
A) mix 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; With
C), according to 1 ~ 3% of described quality of mud fluid mark, add wherein described mixed carboxylic acid's salt and stir.
2. in probing as claimed in claim 1, reduce the method for fluid loss, wherein said mixture of carboxylic acids is the mixture that carbon number is more than or equal to 12 linear paraffin carboxylic acid, olefin carboxylic acid and cycloalkane carboxylic acid.
3. in probing as claimed in claim 1, reduce the method for fluid loss, wherein said mixture of carboxylic acids is mixed to get according to mass ratio 1:2 by linoleic acid and rosin acid.
4. in probing as claimed in claim 1, reduce the method for fluid loss, the mass fraction of wherein said sodium hydroxide solution is 25 ~ 35%, and the addition of sodium hydroxide solution described in described mixture of carboxylic acids is 10 ~ 20% of described carboxylic acid quality.
5. in probing as claimed in claim 1, reduce the method for fluid loss, wherein, in step a, the heating-up temperature of described mixture of carboxylic acids and described sodium hydroxide solution is 70 ~ 80 ℃, and incorporation time is 1 ~ 2 hour.
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| CN201310189071.6A CN104179466B (en) | 2013-05-21 | 2013-05-21 | The method reducing fluid loss in probing |
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| CN201310189071.6A CN104179466B (en) | 2013-05-21 | 2013-05-21 | The method reducing fluid loss in probing |
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| CN104179466B CN104179466B (en) | 2016-08-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN104179466B (en) | 2016-08-24 |
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Granted publication date: 20160824 Termination date: 20200521 |