CN115490242A - High-efficiency seawater mud bentonite and additive thereof - Google Patents
High-efficiency seawater mud bentonite and additive thereof Download PDFInfo
- Publication number
- CN115490242A CN115490242A CN202211147730.5A CN202211147730A CN115490242A CN 115490242 A CN115490242 A CN 115490242A CN 202211147730 A CN202211147730 A CN 202211147730A CN 115490242 A CN115490242 A CN 115490242A
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- Prior art keywords
- bentonite
- additive
- xanthan gum
- viscosity
- sodium
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
- C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
- C01B33/40—Clays
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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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
- C09K8/145—Clay-containing compositions characterised by the composition of the clay
-
- 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
- C09K8/20—Natural organic compounds or derivatives thereof, e.g. polysaccharides or lignin derivatives
- C09K8/206—Derivatives of other natural products, e.g. cellulose, starch, sugars
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
An efficient seawater mud bentonite and an additive thereof are characterized in that: the bentonite is characterized in that firstly, a proper amount of soda is added into raw calcium bentonite ore to produce sodium bentonite, then a proper amount of additive is added into the sodium bentonite to be uniformly mixed, and then the finished product of the bentonite for efficient seawater pulping can be produced; the additive comprises the following components in percentage by mass: xanthan gum, salt-resistant synthetic polymer and high-viscosity sodium carboxymethyl cellulose; the salt-resistant synthetic polymer can be high-viscosity polyacrylamide, sulfonic synthetic polymer viscosity increasing and fluid loss reducing agent, zwitterionic polymer viscosity increasing and fluid loss reducing agent, synthetic polymer viscosity increasing and fluid loss reducing agent and the like, and the xanthan gum and the salt-resistant synthetic polymer are compatible to be synergistic additives, so that good synergistic viscosity increasing and fluid loss reducing effects can be achieved.
Description
Technical Field
An efficient seawater mud bentonite and an additive thereof belong to the technical field of the production of the non-metallic mineral material bentonite.
Background
The bentonite has wide application range, and can be widely applied to casting, metallurgical pellets and drilling mud.
With the development of national economy, offshore drilling, offshore bridges, submarine tunnels, offshore wind power construction projects and the like are more and more, a bentonite product capable of taking seawater for slurry making on site is required for construction convenience, and engineering technicians and scientific researchers at related posts try to develop various additives such as sodium carboxymethyl cellulose, polyanionic cellulose, polyacrylamide, xanthan gum and the like for developing seawater slurry bentonite products for decades, and until now, the seawater bentonite slurry is prepared by singly using the xanthan gum.
Since 2021, the price of xanthan gum has risen, and the production cost of the seawater mud bentonite product has risen greatly, even the normal operation of related enterprises and construction units is affected; therefore, the search for a relatively low-cost additive is not only the requirement of bentonite production enterprises, but also the expression of the progress of engineering technology; due to the market competition relationship, the additive adopted by each bentonite production enterprise is not disclosed, and is only xanthan gum or other compound additives, and other data are rarely reported; when xanthan gum is not commonly used according to early information, high-viscosity sodium carboxymethyl cellulose or polyanionic cellulose can be used for preparing seawater mud, but in terms of mud shearing force and sand carrying performance, the xanthan gum has the best effect at present, and other equivalent substitutes cannot be found; therefore, in a period of time, the single xanthan gum is commonly adopted as the seawater mud additive; but it is becoming more urgent to find alternatives to xanthan gum.
Disclosure of Invention
In order to solve the technical problems, the high-efficiency seawater mud bentonite and the additive thereof comprise: sodium bentonite, xanthan gum, a coating agent FA-367 and high-viscosity sodium carboxymethylcellulose (CMC); the method is characterized in that: aiming at the technical situation of the production process of the seawater mud bentonite at present, the formula of the additive in the seawater calcium-resistant mud bentonite is changed, and a salt-resistant synthetic polymer with relatively low price and high-viscosity sodium carboxymethylcellulose are compounded with xanthan gum; the xanthan gum and the salt-resistant synthetic polymer are mixed with the high-viscosity sodium carboxymethyl cellulose in a proper proportion, so that the quality indexes including viscosity, dynamic plasticity ratio, filtration loss and the like which can be achieved by singly adding the xanthan gum can be achieved under the condition that the total amount of the additive is unchanged or slightly reduced, and the synthetic polymer and the high-viscosity sodium carboxymethyl cellulose have better high-temperature and high-pressure resistance, corrosion resistance, inhibition performance and the like compared with the xanthan gum.
The bentonite is sodium bentonite or sodium bentonite obtained by sodium treatment of calcium bentonite.
The additive xanthan gum in the seawater anti-salt calcium mud bentonite and the additive thereof is xanthan gum with a drilling grade or food grade or industrial grade with a viscosity equivalent.
The additive salt-resistant synthetic polymer in the seawater salt-resistant calcium mud bentonite and the additive thereof can also be polyacrylamide with high molecular weight, can be a sulfonate copolymer tackifying and fluid loss additive, can be a coating agent PAC141 commonly used in drilling fluid, and can also be a zwitterionic polymer, such as a commonly used coating agent FA-367 and the like; from the aspect of cost performance, the zwitterionic polymer coating agent FA-367 is preferably adopted.
The formula comprises the following components: sodium bentonite, xanthan gum, a zwitterionic polymer coating agent FA-367, high-viscosity sodium carboxymethyl cellulose and seawater.
The formula proportion of the invention is as follows: xanthan gum, coating agent FA-367 and high-viscosity sodium carboxymethyl cellulose according to the mass percentage of the sodium bentonite are fully mixed and stirred, and a high-efficiency seawater slurry bentonite finished product can be produced.
The additive is xanthan gum with the mass percentage of sodium bentonite, coating agent FA-367 and high-viscosity sodium carboxymethyl cellulose; adding seawater according to the soil-water ratio, fully mixing and stirring to prepare the high-efficiency seawater salt-resistant bentonite slurry.
The high-efficiency seawater mud bentonite and the additive thereof have the following progress characteristics.
The viscosity of the high-efficiency seawater salt-resistant bentonite slurry produced by the additive can reach more than 30 (600 r/m)/(mPa.s).
The dynamic plastic ratio of the high-efficiency seawater salt-resistant bentonite slurry produced by the additive can reach below 1.5/[ Pa/(mPa.s) ].
The filter loss of the high-efficiency seawater salt-resistant bentonite slurry produced by adopting the additive can be controlled at 15/cm 3 The following.
Under the condition that the price of the existing xanthan gum is more expensive, the seawater salt-resistant bentonite slurry produced by the additive has lower cost, and compared with the single addition of the xanthan gum, the cost of the additive can be saved by more than 10 percent.
The seawater mud bentonite and the additive thereof are suitable for most of bentonite production enterprises in China or offshore engineering construction units, and are suitable for national popularization and reference.
Detailed Description
The technical scheme of the invention is clearly and completely described below by combining the embodiment of the invention; it is to be understood that the described embodiments are merely some, and not all, embodiments of the invention; all other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without any creative efforts shall fall within the technical protection scope of the present invention.
The formula proportion of the invention is as follows: the additive is xanthan gum accounting for 1.5 to 5.5 percent of the mass percentage of the sodium bentonite, coating agent FA-367 accounting for 0.5 to 2 percent of the mass percentage of the sodium bentonite, and high-viscosity sodium carboxymethyl cellulose accounting for 1.5 to 4.5 percent of the mass percentage of the sodium bentonite, and the high-efficiency finished product of the seawater mud bentonite can be produced by fully stirring and mixing.
The seawater bentonite slurry of the invention has the following formula proportion: the additive is 1.5 to 5.5 percent of xanthan gum, 0.5 to 2 percent of coating agent FA-367 and 1.5 to 4.5 percent of high-viscosity sodium carboxymethyl cellulose in percentage by mass of the sodium bentonite; adding seawater with the soil-water ratio of 1.
Example 1.
Adopting sodium bentonite of non-metallic mineral materials Limited company of Hunan Feilai Haifang (Hunan \28583; county) and sodium bentonite of Hunan \28583; county, wherein the additive is xanthan gum accounting for 4.5% of the mass percentage of the bentonite and coating agent FA-367 accounting for 1%, and the xanthan gum accounting for 5.5% of the comparative experiment; adopting seawater of the pearl sea; the soil-water ratio is 1; according to the quality index and the detection method of the bentonite in the national standard GB \ T5005-2010, the detection result is as follows:
example 2.
Adopting sodium bentonite of non-metallic mineral materials Limited company of Hunan Feilai Haifang (Hunan \28583; county) and sodium bentonite of Hunan \28583; county, wherein the additive is 2.5 mass percent of xanthan gum and 0.25 mass percent of coating agent FA-367 of the bentonite, and the additive is 2.75 mass percent of the xanthan gum in a comparative experiment; adopting seawater of the pearl sea; the soil-water ratio is 1; according to the quality index and the detection method of the bentonite in the national standard GB \ T5005-2010, the detection result is as follows:
example 3.
Adopting sodium bentonite of non-metallic mineral materials Limited company of Hunan Feilai Haifang (Hunan \28583; county) and bentonite of Hunan \28583; county, wherein the additives are 1.5 percent of xanthan gum, 0.5 percent of coating agent FA-367 and 1 percent of high-viscosity sodium carboxymethylcellulose CMC in percentage by mass of the bentonite, and the xanthan gum is 3 percent in a comparative experiment; adopting seawater of the pearl sea; the soil-water ratio is 1; according to the quality index and the detection method of the bentonite in the national standard GB \ T5005-2010, the detection result is as follows:
Claims (7)
1. the high-efficiency seawater mud bentonite and the additive thereof are characterized in that: the bentonite can be sodium bentonite, or sodium bentonite added with soda ash and sodium modified bentonite, the additive comprises at least two to three components, xanthan gum, a synergistic viscosity increasing and fluid loss reducing agent and high-viscosity sodium carboxymethyl cellulose CMC, or one of various salt-resistant synthetic polymer viscosity increasing and fluid loss reducing agents, including high molecular weight polyacrylamide, a sulfonic acid group-containing polymer viscosity increasing and fluid loss reducing agent, and a zwitterionic polymer viscosity increasing and fluid loss reducing agent.
2. The high-efficiency seawater mud bentonite and the additive thereof as claimed in claim 1, wherein: one of the additives is xanthan gum, the xanthan gum is drilling grade xanthan gum, or food grade xanthan gum or industrial grade xanthan gum with equivalent viscosity; the addition amount of xanthan gum in bentonite is 2-5%.
3. The high-efficiency seawater mud bentonite and the additive thereof as claimed in claim 1, wherein: the addition ratio of the zwitterionic polymer tackifying and fluid loss additive FA-367 to xanthan gum in the high-efficiency seawater mud bentonite is 1.
4. The high-efficiency seawater mud bentonite and the additive thereof as claimed in claim 1, wherein: the additive is 1.5-5.5% of xanthan gum, 0.5-2% of coating agent FA-367 and 1.5-4.5% of high-viscosity sodium carboxymethyl cellulose, which are mixed and stirred fully, and the high-efficiency seawater mud bentonite finished product can be produced.
5. The high-efficiency seawater mud bentonite and the additive thereof as claimed in claim 1, wherein: the additive is 1.5 to 5.5 mass percent of xanthan gum of sodium bentonite, 0.5 to 2 mass percent of coating agent FA-367 and 1.5 to 4.5 mass percent of high-viscosity sodium carboxymethylcellulose; adding seawater with the soil-water ratio of 1.
6. The high-efficiency seawater mud bentonite and the additive thereof as claimed in claim 1, wherein: all other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without any creative efforts shall fall within the technical scope of the present invention.
7. The high-efficiency seawater mud bentonite and the additive thereof as claimed in claim 1, wherein: according to the construction requirement, other inorganic salts and organic high molecular substances are added, and the seawater salt-resistant bentonite and the salt-resistant bentonite slurry produced by the additive which simultaneously contains xanthan gum and salt-resistant synthetic polymer and viscosity increaser high-viscosity sodium carboxymethyl cellulose CMC in corresponding proportion are also considered as the technical protection scope of the invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211147730.5A CN115490242A (en) | 2022-09-21 | 2022-09-21 | High-efficiency seawater mud bentonite and additive thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211147730.5A CN115490242A (en) | 2022-09-21 | 2022-09-21 | High-efficiency seawater mud bentonite and additive thereof |
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| CN115490242A true CN115490242A (en) | 2022-12-20 |
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| CN202211147730.5A Pending CN115490242A (en) | 2022-09-21 | 2022-09-21 | High-efficiency seawater mud bentonite and additive thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116355601A (en) * | 2023-02-27 | 2023-06-30 | 桂林理工大学 | Sand pebble large-aperture stratum wall protection slurry and preparation method thereof |
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2022
- 2022-09-21 CN CN202211147730.5A patent/CN115490242A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116355601A (en) * | 2023-02-27 | 2023-06-30 | 桂林理工大学 | Sand pebble large-aperture stratum wall protection slurry and preparation method thereof |
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