CN112126418A - Thixotropic slurry prepared from seawater and preparation method thereof - Google Patents
Thixotropic slurry prepared from seawater and preparation method thereof Download PDFInfo
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- CN112126418A CN112126418A CN202011020876.4A CN202011020876A CN112126418A CN 112126418 A CN112126418 A CN 112126418A CN 202011020876 A CN202011020876 A CN 202011020876A CN 112126418 A CN112126418 A CN 112126418A
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- 239000002002 slurry Substances 0.000 title claims abstract description 90
- 239000013535 sea water Substances 0.000 title claims abstract description 58
- 230000009974 thixotropic effect Effects 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title abstract description 17
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 65
- 238000003756 stirring Methods 0.000 claims abstract description 46
- 229920001577 copolymer Polymers 0.000 claims abstract description 35
- 150000003839 salts Chemical class 0.000 claims abstract description 35
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 31
- 235000017550 sodium carbonate Nutrition 0.000 claims abstract description 31
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 21
- 239000000440 bentonite Substances 0.000 claims abstract description 21
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 21
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 20
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 20
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 20
- 239000011734 sodium Substances 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 230000001007 puffing effect Effects 0.000 claims abstract description 7
- 229940092782 bentonite Drugs 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910000280 sodium bentonite Inorganic materials 0.000 claims description 3
- 229940080314 sodium bentonite Drugs 0.000 claims description 3
- 229910000281 calcium bentonite Inorganic materials 0.000 claims description 2
- JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 239000013505 freshwater Substances 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 description 8
- 206010016807 Fluid retention Diseases 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
-
- 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
-
- 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 thixotropic slurry prepared from seawater and a preparation method thereof, belonging to the field of engineering materials, wherein the thixotropic slurry prepared from seawater is prepared from the following raw materials in parts by weight: 900-1100 parts of bentonite, 35-40 parts of soda ash, 125-330 parts of sodium carboxymethylcellulose CMC-Na, 25-30 parts of polyacrylamide PHP, 5-10 parts of salt-resistant copolymer GTQ, and 5000-10000 parts of seawater. The preparation method comprises the following steps: selecting raw materials, mixing, stirring and puffing. According to the thixotropic slurry prepared from seawater and the preparation method thereof disclosed by the invention, seawater is used for replacing traditional fresh water to prepare the slurry, and the salt-resistant copolymer is combined to realize the effects of tackifying, reducing filtration loss, resisting pollution and improving the water-retaining property of the slurry, so that the thixotropic slurry has the advantages of conveniently taking local materials, saving engineering cost, saving fresh water resources, and being more energy-saving and environment-friendly.
Description
Technical Field
The invention relates to the field of engineering materials, in particular to thixotropic slurry prepared from seawater and a preparation method thereof.
Background
With the rapid development of national social economy and municipal construction promoted by the national social economy, urban comprehensive pipe gallery projects are more and more. The prefabricated hoisting method is a common construction method for pipe gallery construction, but is limited by underground pipelines and other special factors, and the pipe jacking process embodies the advantages obviously different from the excavation process and is widely applied. With the enlargement of urban scale, the cross-sea comprehensive pipe gallery is gradually built, at present, the cross-sea submarine pipe gallery, especially large-diameter pipe jacking projects are rarely applied in China, and the research on the performance test of the thixotropic slurry of the pipe jacking projects, especially the research on the thixotropic slurry prepared by using seawater, is still few.
The thixotropic slurry disclosed by Chinese patent document publication No. CN104150822B and the preparation method thereof are disclosed, and the thixotropic slurry comprises the following preparation raw materials in percentage by weight: 4-9% of sodium bentonite, 0.2-0.4% of soda ash, 0.05-0.15% of sodium carboxymethyl cellulose (CMC), 0.1-0.3% of polyacrylamide (PHP) and the balance of water. The preparation method of the invention comprises the following steps: selecting raw materials; mixing and stirring; and (5) circularly puffing. However, the thixotropic slurry is prepared by adopting the fresh water resource in the preparation process, so that once the prepared thixotropic slurry material meets chloride ions in seawater, water can be quickly lost, mud and water are separated, the thixotropic slurry loses the lubricating effect, the prepared thixotropic slurry is serious in filtration, easy to pollute, poor in water retention and difficult to adapt to the seawater environment, and the thixotropic slurry prepared by adopting the fresh water resource is easy to pollute the fresh water, and the fresh water consumption is large, so that the resource waste is caused, and the preparation cost is increased.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to solve the technical problem of providing the thixotropic slurry prepared by adopting seawater and the preparation method thereof, the seawater is adopted to replace the traditional fresh water for preparing the slurry, and the salt-resistant copolymer is combined to realize the effects of tackifying, reducing filtration loss, resisting pollution and improving the water retention of the slurry, so that the thixotropic slurry has the advantages of conveniently using local materials, saving engineering cost, saving fresh water resources, saving more energy and protecting environment.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides thixotropic slurry prepared from seawater, which is prepared from the following raw materials in parts by weight: 900-1100 parts of bentonite, 35-40 parts of soda ash, 125-330 parts of sodium carboxymethylcellulose CMC-Na, 25-30 parts of polyacrylamide PHP, 5-10 parts of salt-resistant copolymer GTQ, and 5000-10000 parts of seawater.
The preferable technical scheme of the invention is that the thixotropic slurry prepared by adopting seawater is prepared from the following raw materials in parts by weight: 900 parts of bentonite, 35 parts of soda ash, 125 parts of sodium carboxymethylcellulose CMC-Na, 25 parts of polyacrylamide PHP, 5 parts of salt-resistant copolymer GTQ, and 5000 parts of seawater.
The preferable technical scheme of the invention is that the thixotropic slurry prepared by adopting seawater is prepared from the following raw materials in parts by weight: 1100 parts of bentonite, 40 parts of calcined soda, 330 parts of sodium carboxymethylcellulose CMC-Na, 30 parts of polyacrylamide PHP, 10 parts of salt-resistant copolymer GTQ, and 10000 parts of seawater.
The preferable technical scheme of the invention is that the thixotropic slurry prepared by adopting seawater is prepared from the following raw materials in parts by weight: 1000 parts of bentonite, 38 parts of soda ash, 38 parts of sodium carboxymethylcellulose CMC-Na, 28 parts of polyacrylamide PHP, 8 parts of salt-resistant copolymer GTQ, 8000 parts of seawater.
The invention preferably adopts the technical scheme that the bentonite is configured into sodium bentonite.
The invention preferably adopts the technical scheme that the bentonite is configured into calcium bentonite.
The invention provides a preparation method of thixotropic slurry, which comprises the following steps:
(1) weighing the components according to the composition of the raw materials;
(2) firstly, adding bentonite into a stirring barrel, adding 45-47.5% of seawater in the stirring process, and uniformly stirring to obtain a blank;
(3) dissolving the salt-resistant copolymer GTQ by using seawater to obtain a salt-resistant copolymer solution, then adding the salt-resistant copolymer solution into the stirring barrel in the step (2), and uniformly stirring to realize viscosity increasing and reduce the filtration loss of slurry;
(4) dissolving sodium carbonate by using seawater to obtain a sodium carbonate solution, then adding the sodium carbonate solution into the stirring barrel in the step (3), uniformly stirring, adding polyacrylamide (PHP) and uniformly stirring;
(5) adding the rest seawater and sodium carboxymethyl cellulose (CMC-Na) into the slurry obtained in the step (4), and uniformly stirring;
(6) and (4) finally, conveying the slurry obtained in the step (5) to a slurry storage tank through a slurry pump, and puffing for 24-36 hours.
The preferable technical scheme of the invention is that in the step (4), the weight ratio of water and sodium carbonate for dissolving the sodium carbonate is 2-5: 1.
the invention preferably adopts the technical scheme that in the step (3), the weight ratio of water for dissolving the salt-resistant copolymer GTQ to the salt-resistant copolymer GTQ is 100-200: 1.
the invention has the beneficial effects that:
according to the thixotropic slurry prepared from seawater and the preparation method thereof, provided by the invention, the seawater is used for replacing the traditional fresh water to prepare the slurry, so that local materials can be conveniently obtained, the engineering cost can be saved, and meanwhile, the fresh water resource can be saved, so that the thixotropic slurry is more energy-saving and environment-friendly. The salt-resistant copolymer is added into the blank, so that the viscosity of the blank can be increased, and the subsequently added sodium carbonate solution, polyacrylamide PHP and sodium carboxymethylcellulose CMC-Na can be better fused with the blank of the slurry, so that the prepared thixotropic slurry has the effects of filtration loss reduction, pollution resistance, excellent water retention and the like. The thixotropic slurry prepared by the technical scheme of the invention has the characteristics of excellent wall protection, thixotropy and stability, can be used as a support and lubricating medium in large-scale cross-sea pipe jacking construction, can form a complete continuous lubricating film on the periphery of a jacking pipeline, plays roles in reducing drag, filling and supporting, ensures the safety and stability of jacking pipe jacking, and has wide prospects in the development of the pipe jacking tunnel engineering industry. The method has the advantages of good application effect, wide application range, simplicity, convenience and easiness in operation, low preparation cost and capability of further saving the construction cost.
Detailed Description
The experimental procedures in the following examples are conventional unless otherwise specified. The raw materials in the following examples are all commercially available products and are commercially available, unless otherwise specified. The present invention is described in further detail below with reference to examples:
example 1
A thixotropic slurry prepared from seawater comprises the following components in parts by weight:
900 parts of bentonite, 35 parts of soda ash, 125 parts of sodium carboxymethylcellulose CMC-Na, 25 parts of polyacrylamide PHP, 5 parts of salt-resistant copolymer GTQ, 5000 parts of seawater, and the thixotropic slurry is prepared by the following steps:
(1) adding 2250 parts of water into a stirring barrel;
(2) slowly adding 900 parts of bentonite into a stirring barrel, uniformly mixing and stirring for 30-45 min under the conditions that the temperature is 45-60 ℃ and the rotating speed is 240-300 r/min, and obtaining a blank;
(3) dissolving 5 parts of salt-resistant copolymer GTQ by using 500 parts of seawater to obtain a salt-resistant copolymer solution, adding the salt-resistant copolymer solution into a stirring barrel, and uniformly stirring;
(4) dissolving 35 parts of soda ash by using 70 parts of seawater to obtain a sodium carbonate solution, adding the sodium carbonate solution into a stirring barrel, uniformly stirring, adding 25 parts of polyacrylamide (PHP), and uniformly stirring;
(5) 2180 parts of seawater and 125 parts of sodium carboxymethylcellulose CMC-Na are added into the slurry, and the mixture is uniformly mixed and stirred for 60-80 min at the temperature of 50-60 ℃ and the rotating speed of 300-350 r/min to obtain pretreated thixotropic slurry;
(6) and finally, conveying the obtained slurry to a slurry storage tank through a slurry pump, and puffing for 24 hours at the temperature of 30-45 ℃ to obtain the thixotropic slurry.
Example 2
A thixotropic slurry prepared from seawater comprises the following components in parts by weight:
1100 parts of bentonite, 40 parts of calcined soda, 330 parts of sodium carboxymethylcellulose CMC-Na, 30 parts of polyacrylamide PHP, 10 parts of salt-resistant copolymer GTQ, and 10000 parts of seawater, and the thixotropic slurry is prepared by the following steps:
(1) adding 4750 parts of water into a stirring barrel;
(2) slowly adding 1100 parts of bentonite into a stirring barrel, uniformly mixing and stirring for 35-50 min under the conditions that the temperature is 50-65 ℃ and the rotating speed is 260-320 r/min, and obtaining a blank;
(3) dissolving 10 parts of salt-resistant copolymer GTQ by 2000 parts of seawater to obtain a salt-resistant copolymer solution, adding the salt-resistant copolymer solution into a stirring barrel, and uniformly stirring;
(4) dissolving 40 parts of soda ash by using 200 parts of seawater to obtain a sodium carbonate solution, adding the sodium carbonate solution into a stirring barrel, uniformly stirring, adding 30 parts of polyacrylamide (PHP), and uniformly stirring;
(5) adding 3050 parts of seawater and 330 parts of sodium carboxymethylcellulose CMC-Na into the obtained slurry, and uniformly mixing and stirring for 65-85 min at the temperature of 55-65 ℃ and the rotating speed of 320-370 r/min to obtain pretreated thixotropic slurry;
(6) and finally, conveying the obtained slurry to a slurry storage tank through a slurry pump, and puffing for 36 hours at the temperature of 35-50 ℃ to obtain the thixotropic slurry.
Example 3
A thixotropic slurry prepared from seawater comprises the following components in parts by weight:
1000 parts of bentonite, 38 parts of soda ash, 38 parts of sodium carboxymethylcellulose CMC-Na225 parts, 28 parts of polyacrylamide PHP, 8 parts of salt-resistant copolymer GTQ, 8000 parts of seawater, and the thixotropic slurry is prepared by the following steps:
(1) adding 3700 parts of water into a stirring barrel;
(2) slowly adding 1000 parts of bentonite into a stirring barrel, uniformly mixing and stirring for 33-48 min under the conditions that the temperature is 48-63 ℃ and the rotating speed is 250-310 r/min, and obtaining a blank;
(3) dissolving 8 parts of salt-resistant copolymer GTQ by 1200 parts of seawater to obtain a salt-resistant copolymer solution, adding the salt-resistant copolymer solution into a stirring barrel, and uniformly stirring;
(4) dissolving 38 parts of soda ash by 133 parts of seawater to obtain a sodium carbonate solution, adding the sodium carbonate solution into a stirring barrel, uniformly stirring, adding 28 parts of polyacrylamide (PHP), and uniformly stirring;
(5) adding 2967 parts of seawater and 225 parts of sodium carboxymethylcellulose CMC-Na into the obtained slurry, and uniformly mixing and stirring for 63-83 min under the conditions that the temperature is 53-63 ℃ and the rotating speed is 310-360 r/min to obtain pretreated thixotropic slurry;
(6) and finally, conveying the obtained slurry to a slurry storage tank through a slurry pump, and puffing for 30 hours at the temperature of 33-48 ℃ to obtain the thixotropic slurry.
The thixotropic slurry obtained in examples 1 to 3 was subjected to performance testing by the following specific testing method:
1. fluidity: measuring the viscosity of a test piece by using a funnel viscometer and a stopwatch, wherein the unit is second(s), and the shorter the time is, the lower the viscosity is, and the better the fluidity is;
2. stability: measuring the water separation rate of the slurry by using a measuring cylinder and a glass plate, namely the ratio of the water separated from the slurry in 24 hours after the test piece slurry is prepared to the volume of the original slurry, wherein the smaller the value of the water separation rate is, the better the stability is;
3. water retention: and measuring the water loss of the slurry by adopting an inflator filtration loss instrument.
The thixotropic slurries of examples 1-3 were tested to provide the following results in Table 1.
TABLE 1 Performance index of thixotropic slurries prepared in the examples
The thixotropic slurry required for pipe jacking construction must have the properties shown in table 2 below.
TABLE 2 Property requirements of thixotropic slurries
According to the preparation process, the detection results in the table 1 and the performance requirements in the table 2 are combined, and the seawater is adopted to replace the traditional fresh water for preparing the slurry, so that local materials are conveniently obtained, the engineering cost is saved, and meanwhile, the fresh water resource can be saved, and the slurry is more energy-saving and environment-friendly. The salt-resistant copolymer is added into the blank, so that the viscosity of the blank can be increased, and the subsequently added sodium carbonate solution, polyacrylamide PHP and sodium carboxymethylcellulose CMC-Na can be better fused with the blank of the slurry, so that the prepared thixotropic slurry has the effects of filtration loss reduction, pollution resistance, excellent water retention and the like. The thixotropic slurry prepared by the technical scheme of the invention has the characteristics of excellent wall protection, thixotropy and stability, can be used as a support and lubricating medium in large-scale cross-sea pipe jacking construction, can form a complete continuous lubricating film on the periphery of a jacking pipeline, plays roles in reducing drag, filling and supporting, ensures the safety and stability of jacking pipe jacking, and has wide prospects in the development of the pipe jacking tunnel engineering industry. The method has the advantages of good application effect, wide application range, simplicity, convenience and easiness in operation, low preparation cost and capability of further saving the construction cost.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (9)
1. The thixotropic slurry prepared from seawater is characterized by being prepared from the following raw materials in parts by weight:
900-1100 parts of bentonite, 35-40 parts of soda ash, 125-330 parts of sodium carboxymethylcellulose CMC-Na, 25-30 parts of polyacrylamide PHP, 5-10 parts of salt-resistant copolymer GTQ, and 5000-10000 parts of seawater.
2. The thixotropic slurry prepared from seawater according to claim 1, which is prepared from the following raw materials in parts by weight:
900 parts of bentonite, 35 parts of soda ash, 125 parts of sodium carboxymethylcellulose CMC-Na, 25 parts of polyacrylamide PHP, 5 parts of salt-resistant copolymer GTQ, and 5000 parts of seawater.
3. The thixotropic slurry prepared from seawater according to claim 1, which is prepared from the following raw materials in parts by weight:
1100 parts of bentonite, 40 parts of calcined soda, 330 parts of sodium carboxymethylcellulose CMC-Na, 30 parts of polyacrylamide PHP, 10 parts of salt-resistant copolymer GTQ, and 10000 parts of seawater.
4. The thixotropic slurry prepared from seawater according to claim 1, which is prepared from the following raw materials in parts by weight:
1000 parts of bentonite, 38 parts of soda ash, 38 parts of sodium carboxymethylcellulose CMC-Na, 28 parts of polyacrylamide PHP, 8 parts of salt-resistant copolymer GTQ, 8000 parts of seawater.
5. A thixotropic slurry made with seawater as claimed in claim 1 wherein:
the bentonite is configured as sodium bentonite.
6. A thixotropic slurry made with seawater as claimed in claim 1 wherein:
the bentonite is configured as calcium bentonite.
7. A method for preparing a thixotropic slurry for use in any one of claims 1 to 6 using seawater, wherein the method for preparing the thixotropic slurry comprises the steps of:
(1) weighing the components according to the composition of the raw materials;
(2) firstly, adding bentonite into a stirring barrel, adding 45-47.5% of seawater in the stirring process, and uniformly stirring to obtain a blank;
(3) dissolving the salt-resistant copolymer GTQ by using seawater to obtain a salt-resistant copolymer solution, then adding the salt-resistant copolymer solution into the stirring barrel in the step (2), and uniformly stirring to realize viscosity increase and reduce the filtration loss of slurry;
(4) dissolving sodium carbonate by using seawater to obtain a sodium carbonate solution, then adding the sodium carbonate solution into the stirring barrel in the step (3), uniformly stirring, adding polyacrylamide (PHP) and uniformly stirring;
(5) adding the rest seawater and sodium carboxymethyl cellulose (CMC-Na) into the slurry obtained in the step (4), and uniformly stirring;
(6) and (4) finally, conveying the slurry obtained in the step (5) to a slurry storage pool through a slurry pump, and puffing for 24-36 hours.
8. The method of claim 7, wherein:
in the step (4), the weight ratio of water and sodium carbonate for dissolving the sodium carbonate is 2-5: 1.
9. the method of claim 7, wherein:
in the step (3), the weight ratio of water for dissolving the salt-resistant copolymer GTQ to the salt-resistant copolymer GTQ is 100-200: 1.
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|---|---|---|---|---|
| US4500436A (en) * | 1980-10-17 | 1985-02-19 | Pabley Avtar S | Saltwater and hard water bentonite mud |
| CN101486549A (en) * | 2009-02-18 | 2009-07-22 | 路桥集团国际建设股份有限公司 | Slurry for cross-sea bridge drilling pile drill construction and pulp making method |
| CN103555302A (en) * | 2013-10-31 | 2014-02-05 | 中船勘察设计研究院有限公司 | drilling wall-protecting slurry prepared from seawater |
| CN104017550A (en) * | 2014-06-20 | 2014-09-03 | 山东省鲁北地质工程勘察院 | Saturated salt water drilling fluid for deep well salt mine drilling and preparation method of drilling fluid |
| CN104150822A (en) * | 2014-07-22 | 2014-11-19 | 中铁隧道集团有限公司 | Thixotropic slurry and preparation method thereof |
| CN107523280A (en) * | 2017-09-05 | 2017-12-29 | 宣化燕北矿业有限责任公司 | A kind of thickening filtrate reducing complexing agent for seawater mud and preparation method thereof |
| CN107858150A (en) * | 2017-11-15 | 2018-03-30 | 周荣 | A kind of thixotropic slurry |
| CN110922947A (en) * | 2019-12-10 | 2020-03-27 | 桂林理工大学 | Additive for reducing inhibition of swelling performance of bentonite by seawater |
| CN111423858A (en) * | 2019-01-09 | 2020-07-17 | 谢丽君 | High-temperature high-density seawater-based drilling fluid |
-
2020
- 2020-09-25 CN CN202011020876.4A patent/CN112126418A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4500436A (en) * | 1980-10-17 | 1985-02-19 | Pabley Avtar S | Saltwater and hard water bentonite mud |
| CN101486549A (en) * | 2009-02-18 | 2009-07-22 | 路桥集团国际建设股份有限公司 | Slurry for cross-sea bridge drilling pile drill construction and pulp making method |
| CN103555302A (en) * | 2013-10-31 | 2014-02-05 | 中船勘察设计研究院有限公司 | drilling wall-protecting slurry prepared from seawater |
| CN104017550A (en) * | 2014-06-20 | 2014-09-03 | 山东省鲁北地质工程勘察院 | Saturated salt water drilling fluid for deep well salt mine drilling and preparation method of drilling fluid |
| CN104150822A (en) * | 2014-07-22 | 2014-11-19 | 中铁隧道集团有限公司 | Thixotropic slurry and preparation method thereof |
| CN107523280A (en) * | 2017-09-05 | 2017-12-29 | 宣化燕北矿业有限责任公司 | A kind of thickening filtrate reducing complexing agent for seawater mud and preparation method thereof |
| CN107858150A (en) * | 2017-11-15 | 2018-03-30 | 周荣 | A kind of thixotropic slurry |
| CN111423858A (en) * | 2019-01-09 | 2020-07-17 | 谢丽君 | High-temperature high-density seawater-based drilling fluid |
| CN110922947A (en) * | 2019-12-10 | 2020-03-27 | 桂林理工大学 | Additive for reducing inhibition of swelling performance of bentonite by seawater |
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Application publication date: 20201225 |