CN103555298B - Method and the application of additive for drilling fluid is prepared by green peel of walnut - Google Patents

Method and the application of additive for drilling fluid is prepared by green peel of walnut Download PDF

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Publication number
CN103555298B
CN103555298B CN201310568632.3A CN201310568632A CN103555298B CN 103555298 B CN103555298 B CN 103555298B CN 201310568632 A CN201310568632 A CN 201310568632A CN 103555298 B CN103555298 B CN 103555298B
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walnut
green peel
massfraction
particle
under
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CN103555298A (en
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陈刚
张洁
宋莹盼
张建甲
屈坤
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Shaanxi Xinfu Han Hai Petroleum Technology Co., Ltd.
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Xian Shiyou University
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/02Well-drilling compositions
    • C09K8/03Specific additives for general use in well-drilling compositions
    • C09K8/035Organic additives

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  • Life Sciences & Earth Sciences (AREA)
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Abstract

Method and the application of Environment-protecting Drilling Fluids treatment agent is prepared by green peel of walnut, method is rolled by Cortex walnut to be crushed to particle, green peel of walnut particle is added in hollander, add ethanol, soak under normal temperature and pressure, by the green peel of walnut particle making beating of soaking, formaldehyde solution and Sodium Benzoate is added in green peel of walnut slurry, making beating, xylogen goods are added in the green peel of walnut slurry after process, making beating, obtain Environment-protecting Drilling Fluids treatment agent, during application, Environment-protecting Drilling Fluids treatment agent is scattered in water-base drilling fluid, adopt API its filtration reduction of standard test and tackifying, or Environment-protecting Drilling Fluids treatment agent is scattered in waste water-base drilling liquid, stir, leave standstill, solid phase in waste water-base drilling liquid is flocculated, strengthen through modified pericarp dispersiveness, effectively can reduce viscosity and the filter loss of water-base drilling fluid, may be used for cooking fluid loss agent and the tackifier of drilling fluid in field produces.

Description

Method and the application of additive for drilling fluid is prepared by green peel of walnut
Technical field
The present invention relates to Cortex walnut applied technical field, be specifically related to method and the application of being prepared Environment-protecting Drilling Fluids treatment agent by green peel of walnut.
Background technology
Walnut is Juglandaceae Juglans deciduous tree, and formal name used at school English walnut, cultivation history is long.Walnut Resources in China is very abundant, produces outstanding many with Shandong, Hebei, Henan, Zhejiang, Shanxi, Shaanxi, Gansu, Qinghai, Sichuan, Guizhou, West of Hubei Province and southern Xinjiang.Research shows in green peel of walnut containing natural polymers such as a large amount of tannin (10.49mg/g), tannin (1.78%) and polysaccharide.In addition, green peel of walnut is also containing polytype micromolecular compound: juglanin, regianin, naphthoquinones, flavonoid, Polyphenols, diaryl heptane class, terpene, unsaturated fatty acids (gaidic acid, 9-octadecenoic acid, 9,12-octadecadienoic acid, 9,12,15-punicic acid), VITAMIN, carotene, coffic acid, gallic acid, benzoaric acid, Hydroxycinnamic acid, succsinic acid etc.
According to statistics, the output of the rascal of current China artificial culture walnut is 27.4 ten thousand t every year, add that output China of wild walnut rascal produces green peel of walnut about 350,000 about t per year, but green peel of walnut is not also by utilization on a large scale at present.Drilling fluid additive can be used as in field of oilfield chemistry plant phenols and poly-saccharide material, there is viscosity reduction, fall the effects such as dehydration, and containing compounds such as lignin class, polysaccharide in green peel of walnut, if used as drilling fluid additive, good economic benefit and environmental benefit can will be produced.
Summary of the invention
In order to expand the purposes of green peel of walnut, improve its added value, the object of the present invention is to provide method and the application of being prepared Environment-protecting Drilling Fluids treatment agent by green peel of walnut, the polyphenolic compound in formaldehyde and Cortex walnut is adopted to carry out hydroxylating, strengthen through modified pericarp dispersiveness, effectively can reduce viscosity and the filter loss of water-base drilling fluid, may be used for cooking fluid loss agent and the tackifier of drilling fluid in field produces.
In order to achieve the above object, the technical solution used in the present invention is:
Prepared the method for Environment-protecting Drilling Fluids treatment agent by green peel of walnut, comprise the following steps:
The first step, Cortex walnut is rolled the particle be crushed within diameter 2cm, Cortex walnut is the rascal that fresh walnut strips down;
Second step, adds in hollander by above-mentioned green peel of walnut particle, adds the ethanol accounting for green peel of walnut massfraction 1-10%, soak more than 30min under normal temperature and pressure, and described ethanol is the product of the above purity of technical grade;
3rd step, at normal temperatures and pressures, under 1000-20000 rev/min, pull an oar the green peel of walnut particle soaked by second step 3-15min;
4th step, in above-mentioned green peel of walnut slurry, add the formaldehyde solution accounting for green peel of walnut massfraction 0.1-1%, and account for the Sodium Benzoate of green peel of walnut massfraction 0.1-1%, under 100-500 rev/min, making beating 3-15min, described formaldehyde and Sodium Benzoate are the above purity product of technical grade;
5th step, add in the green peel of walnut slurry after above-mentioned process and account for green peel of walnut massfraction 0-50% xylogen goods, under 100-500 rev/min, making beating 3-15min, obtain Environment-protecting Drilling Fluids treatment agent, the mixture changing sodium lignosulfonate, calcium lignin sulphonate, alkalization xylogen and any mass ratio thereof that xylogen goods are the above purity of technical grade used.
During application, be scattered in water-base drilling fluid by above-mentioned Environment-protecting Drilling Fluids treatment agent, its mass concentration is the solution of 0.1-1%, adopts API its filtration reduction of standard test and tackifying, reduces leak-off 10-40%, and viscosity reduces 10-50%.Or be scattered in waste water-base drilling liquid by above-mentioned Environment-protecting Drilling Fluids treatment agent, its mass concentration is 2-6%, stirs, leave standstill, the solid phase in waste water-base drilling liquid is flocculated, and in aqueous phase, solid content is lower than 0.1%.
Be raw material owing to present invention employs with Cortex walnut and xylogen goods, have the natural feature of environmental protection and recyclability, be easy to biological degradation, a small amount of phenylformic acid added can strengthen the germ resistance of this system; The xylogen contained in green peel of walnut, polysaccharide, polyphenol and xylogen-polysaccharide composite body class substance advantageous is in its viscosifying action of raising, enhance the adsorption of clay particle surface in itself and drilling fluid, the network structure of clay in water-base drilling fluid can be broken, play viscosity reduction effect; Tiny particle can play the tiny duct in blocking mud cake simultaneously, is conducive to improving its filtrate reducing effect.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
Prepared the method for Environment-protecting Drilling Fluids treatment agent by green peel of walnut, comprise the following steps:
The first step, rolls the particle being crushed to diameter 1-2cm by Cortex walnut, Cortex walnut is the rascal that fresh walnut strips down;
Second step, adds in hollander by above-mentioned green peel of walnut particle, adds the ethanol accounting for green peel of walnut massfraction 10%, soak 40min under normal temperature and pressure, and described ethanol is technical grade product;
3rd step, at normal temperatures and pressures, under 10000 revs/min, pull an oar the green peel of walnut particle soaked by second step 5min;
4th step, adds the formaldehyde solution accounting for green peel of walnut massfraction 0.2%, and accounts for the Sodium Benzoate of green peel of walnut massfraction 0.1% in above-mentioned green peel of walnut slurry, under 100 revs/min, and making beating 10min, described formaldehyde and Sodium Benzoate are technical grade product;
5th step, add in the green peel of walnut slurry after above-mentioned process and account for green peel of walnut massfraction 10% xylogen goods, under 100 revs/min, making beating 15min, obtain Environment-protecting Drilling Fluids treatment agent, the xylogen goods that change used are technical grade calcium lignin sulphonate.
During application, be scattered in water-base drilling fluid by above-mentioned Environment-protecting Drilling Fluids treatment agent, its mass concentration is the solution of 0.1%, adopts API its filtration reduction of standard test and tackifying, reduces leak-off 11%, and viscosity reduces by 15%.Or be scattered in waste water-base drilling liquid by above-mentioned Environment-protecting Drilling Fluids treatment agent, its mass concentration is 2%, stirs, leave standstill, the solid phase in waste water-base drilling liquid is flocculated, and in aqueous phase, solid content is lower than 0.1%.
Embodiment 2
Prepared the method for Environment-protecting Drilling Fluids treatment agent by green peel of walnut, comprise the following steps:
The first step, rolls the particle being crushed to diameter 0.5-1cm by Cortex walnut, Cortex walnut is the rascal that fresh walnut strips down;
Second step, adds in hollander by above-mentioned green peel of walnut particle, adds the ethanol accounting for green peel of walnut massfraction 5%, soak 50min under normal temperature and pressure, and described ethanol is technical grade product;
3rd step, at normal temperatures and pressures, under 15000 revs/min, pull an oar the green peel of walnut particle soaked by second step 5min;
4th step, adds the formaldehyde solution accounting for green peel of walnut massfraction 0.5%, and accounts for the Sodium Benzoate of green peel of walnut massfraction 0.6% in above-mentioned green peel of walnut slurry, under 300 revs/min, and making beating 2min, described formaldehyde and Sodium Benzoate are chemical pure product;
5th step, add in the green peel of walnut slurry after above-mentioned process and account for green peel of walnut massfraction 20% xylogen goods, under 400 revs/min, making beating 10min, obtain Environment-protecting Drilling Fluids treatment agent, the xylogen goods that change used are technical grade sodium lignosulfonate.
During application, be scattered in water-base drilling fluid by above-mentioned Environment-protecting Drilling Fluids treatment agent, its mass concentration is the solution of 0.3%, adopts API its filtration reduction of standard test and tackifying, reduces leak-off 20%, and viscosity reduces by 18%.Or be scattered in waste water-base drilling liquid by above-mentioned Environment-protecting Drilling Fluids treatment agent, its mass concentration is 2.5%, stirs, leave standstill, the solid phase in waste water-base drilling liquid is flocculated, and in aqueous phase, solid content is lower than 0.1%.
Embodiment 3
Prepared the method for Environment-protecting Drilling Fluids treatment agent by green peel of walnut, comprise the following steps:
The first step, rolls the particle being crushed to diameter 1-2cm by Cortex walnut, Cortex walnut is the rascal that fresh walnut strips down;
Second step, adds in hollander by above-mentioned green peel of walnut particle, adds the ethanol accounting for green peel of walnut massfraction 8%, soak 60min under normal temperature and pressure, and described ethanol is technical grade product;
3rd step, at normal temperatures and pressures, under 20000 revs/min, pull an oar the green peel of walnut particle soaked by second step 3min;
4th step, adds the formaldehyde solution accounting for green peel of walnut massfraction 0.3%, and accounts for the Sodium Benzoate of green peel of walnut massfraction 0.8% in above-mentioned green peel of walnut slurry, under 500 revs/min, and making beating 3min, described formaldehyde and Sodium Benzoate are technical grade product;
5th step, add in the green peel of walnut slurry after above-mentioned process and account for green peel of walnut massfraction 30% xylogen goods, under 300 revs/min, making beating 15min, obtains Environment-protecting Drilling Fluids treatment agent, and the xylogen goods that change used are technical grade alkalization xylogen.
During application, be scattered in water-base drilling fluid by above-mentioned Environment-protecting Drilling Fluids treatment agent, its mass concentration is the solution of 0.5%, adopts API its filtration reduction of standard test and tackifying, reduces leak-off 30%, and viscosity reduces by 41%.Or be scattered in waste water-base drilling liquid by above-mentioned Environment-protecting Drilling Fluids treatment agent, its mass concentration is 3%, stirs, leave standstill, the solid phase in waste water-base drilling liquid is flocculated, and in aqueous phase, solid content is lower than 0.08%.
Embodiment 4
Prepared the method for Environment-protecting Drilling Fluids treatment agent by green peel of walnut, comprise the following steps:
The first step, rolls the particle being crushed to diameter 0.2-1cm by Cortex walnut, Cortex walnut is the rascal that fresh walnut strips down;
Second step, adds in hollander by above-mentioned green peel of walnut particle, adds the ethanol accounting for green peel of walnut massfraction 7%, soak 60min under normal temperature and pressure, and described ethanol is technical grade product;
3rd step, at normal temperatures and pressures, under 8000 revs/min, pull an oar the green peel of walnut particle soaked by second step 15min;
4th step, adds the formaldehyde solution accounting for green peel of walnut massfraction 0.1%, and accounts for the Sodium Benzoate of green peel of walnut massfraction 0.8% in above-mentioned green peel of walnut slurry, under 400 revs/min, and making beating 10min, described formaldehyde and Sodium Benzoate are analytical pure product;
5th step, add in the green peel of walnut slurry after above-mentioned process and account for green peel of walnut massfraction 50% xylogen goods, under 500 revs/min, making beating 10min, obtain Environment-protecting Drilling Fluids treatment agent, the xylogen goods that change used are technical grade calcium lignin sulphonate.
During application, be scattered in water-base drilling fluid by above-mentioned Environment-protecting Drilling Fluids treatment agent, its mass concentration is the solution of 0.7%, adopts API its filtration reduction of standard test and tackifying, reduces leak-off 35%, and viscosity reduces by 45%.Or be scattered in waste water-base drilling liquid by above-mentioned Environment-protecting Drilling Fluids treatment agent, its mass concentration is 4.5%, stirs, leave standstill, the solid phase in waste water-base drilling liquid is flocculated, and in aqueous phase, solid content is lower than 0.08%.
Embodiment 5
Prepared the method for Environment-protecting Drilling Fluids treatment agent by green peel of walnut, comprise the following steps:
The first step, rolls the particle being crushed to diameter 0.5-2cm by Cortex walnut, Cortex walnut is the rascal that fresh walnut strips down;
Second step, adds in hollander by above-mentioned green peel of walnut particle, adds the ethanol accounting for green peel of walnut massfraction 3%, soak 120min under normal temperature and pressure, and described ethanol is technical grade product;
3rd step, at normal temperatures and pressures, under 12000 revs/min, pull an oar the green peel of walnut particle soaked by second step 12min;
4th step, adds the formaldehyde solution accounting for green peel of walnut massfraction 1%, and accounts for the Sodium Benzoate of green peel of walnut massfraction 0.1% in above-mentioned green peel of walnut slurry, under 500 revs/min, and making beating 5min, described formaldehyde and Sodium Benzoate are technical grade product;
5th step, add in the green peel of walnut slurry after above-mentioned process and account for green peel of walnut massfraction 15% xylogen goods, under 300 revs/min, making beating 12min, obtains Environment-protecting Drilling Fluids treatment agent, and the xylogen goods that change used are technical grade alkalization xylogen.
During application, be scattered in water-base drilling fluid by above-mentioned Environment-protecting Drilling Fluids treatment agent, its mass concentration is the solution of 1%, adopts API its filtration reduction of standard test and tackifying, reduces leak-off 40%, and viscosity reduces by 50%.Or be scattered in waste water-base drilling liquid by above-mentioned Environment-protecting Drilling Fluids treatment agent, its mass concentration is 6%, stirs, leave standstill, the solid phase in waste water-base drilling liquid is flocculated, and in aqueous phase, solid content is lower than 0.05%.
Embodiment 6
Prepared the method for Environment-protecting Drilling Fluids treatment agent by green peel of walnut, comprise the following steps:
The first step, rolls the particle being crushed to diameter 1-2cm by Cortex walnut, Cortex walnut is the rascal that fresh walnut strips down;
Second step, adds in hollander by above-mentioned green peel of walnut particle, adds the ethanol accounting for green peel of walnut massfraction 10%, soak 50min under normal temperature and pressure, and described ethanol is technical grade product;
3rd step, at normal temperatures and pressures, under 9000 revs/min, pull an oar the green peel of walnut particle soaked by second step 15min;
4th step, adds the formaldehyde solution accounting for green peel of walnut massfraction 0.8%, and accounts for the Sodium Benzoate of green peel of walnut massfraction 0.1% in above-mentioned green peel of walnut slurry, under 300 revs/min, and making beating 10min, described formaldehyde and Sodium Benzoate are chemical pure product;
5th step, add in the green peel of walnut slurry after above-mentioned process and account for green peel of walnut massfraction 20% xylogen goods, under 400 revs/min, making beating 8min, obtain Environment-protecting Drilling Fluids treatment agent, used to change xylogen goods be mass ratio is technical grade alkalization xylogen and the calcium lignin sulphonate of 1:1.
During application, be scattered in water-base drilling fluid by above-mentioned Environment-protecting Drilling Fluids treatment agent, its mass concentration is the solution of 0.6%, adopts API its filtration reduction of standard test and tackifying, reduces leak-off 35%, and viscosity reduces by 46%.Or be scattered in waste water-base drilling liquid by above-mentioned Environment-protecting Drilling Fluids treatment agent, its mass concentration is 5%, stirs, leave standstill, the solid phase in waste water-base drilling liquid is flocculated, and in aqueous phase, solid content is lower than 0.08%.

Claims (6)

1. prepared the method for additive for drilling fluid by green peel of walnut, it is characterized in that, comprise the following steps:
The first step, Cortex walnut is rolled the particle be crushed within diameter 2cm, Cortex walnut is the rascal that fresh walnut strips down;
Second step, adds in hollander by above-mentioned green peel of walnut particle, adds the ethanol accounting for green peel of walnut massfraction 1-10%, soak more than 30min under normal temperature and pressure, and described ethanol is the product of the above purity of technical grade;
3rd step, at normal temperatures and pressures, under 1000-20000 rev/min, pull an oar the green peel of walnut particle soaked by second step 3-15min;
4th step, in above-mentioned green peel of walnut slurry, add the formaldehyde solution accounting for green peel of walnut massfraction 0.1-1%, and account for the Sodium Benzoate of green peel of walnut massfraction 0.1-1%, under 100-500 rev/min, making beating 3-15min, described formaldehyde and Sodium Benzoate are the above purity product of technical grade;
5th step, add in the green peel of walnut slurry after above-mentioned process and account for green peel of walnut massfraction 0-50% xylogen goods, under 100-500 rev/min, making beating 3-15min, obtain Environment-protecting Drilling Fluids treatment agent, xylogen goods used are the mixture of the sodium lignosulfonate of the above purity of technical grade, calcium lignin sulphonate, alkalization xylogen and mass ratio arbitrarily thereof.
2. the method being prepared additive for drilling fluid by green peel of walnut according to claim 1, is characterized in that, comprise the following steps:
The first step, rolls the particle being crushed to diameter 1-2cm by Cortex walnut, Cortex walnut is the rascal that fresh walnut strips down;
Second step, adds in hollander by above-mentioned green peel of walnut particle, adds the ethanol accounting for green peel of walnut massfraction 10%, soak 40min under normal temperature and pressure, and described ethanol is technical grade product;
3rd step, at normal temperatures and pressures, under 10000 revs/min, pull an oar the green peel of walnut particle soaked by second step 5min;
4th step, adds the formaldehyde solution accounting for green peel of walnut massfraction 0.2%, and accounts for the Sodium Benzoate of green peel of walnut massfraction 0.1% in above-mentioned green peel of walnut slurry, under 100 revs/min, and making beating 10min, described formaldehyde and Sodium Benzoate are technical grade product;
5th step, add in the green peel of walnut slurry after above-mentioned process and account for green peel of walnut massfraction 10% xylogen goods, under 100 revs/min, making beating 15min, obtain Environment-protecting Drilling Fluids treatment agent, xylogen goods used are technical grade calcium lignin sulphonate.
3. the method being prepared additive for drilling fluid by green peel of walnut according to claim 1, is characterized in that, comprise the following steps:
The first step, rolls the particle being crushed to diameter 1-2cm by Cortex walnut, Cortex walnut is the rascal that fresh walnut strips down;
Second step, adds in hollander by above-mentioned green peel of walnut particle, adds the ethanol accounting for green peel of walnut massfraction 8%, soak 60min under normal temperature and pressure, and described ethanol is technical grade product;
3rd step, at normal temperatures and pressures, under 20000 revs/min, pull an oar the green peel of walnut particle soaked by second step 3min;
4th step, adds the formaldehyde solution accounting for green peel of walnut massfraction 0.3%, and accounts for the Sodium Benzoate of green peel of walnut massfraction 0.8% in above-mentioned green peel of walnut slurry, under 500 revs/min, and making beating 3min, described formaldehyde and Sodium Benzoate are technical grade product;
5th step, add in the green peel of walnut slurry after above-mentioned process and account for green peel of walnut massfraction 30% xylogen goods, under 300 revs/min, making beating 15min, obtains Environment-protecting Drilling Fluids treatment agent, and xylogen goods used are technical grade alkalization xylogen.
4. the method being prepared additive for drilling fluid by green peel of walnut according to claim 1, is characterized in that, comprise the following steps:
The first step, rolls the particle being crushed to diameter 0.2-1cm by Cortex walnut, Cortex walnut is the rascal that fresh walnut strips down;
Second step, adds in hollander by above-mentioned green peel of walnut particle, adds the ethanol accounting for green peel of walnut massfraction 7%, soak 60min under normal temperature and pressure, and described ethanol is technical grade product;
3rd step, at normal temperatures and pressures, under 8000 revs/min, pull an oar the green peel of walnut particle soaked by second step 15min;
4th step, adds the formaldehyde solution accounting for green peel of walnut massfraction 0.1%, and accounts for the Sodium Benzoate of green peel of walnut massfraction 0.8% in above-mentioned green peel of walnut slurry, under 400 revs/min, and making beating 10min, described formaldehyde and Sodium Benzoate are analytical pure product;
5th step, add in the green peel of walnut slurry after above-mentioned process and account for green peel of walnut massfraction 50% xylogen goods, under 500 revs/min, making beating 10min, obtain Environment-protecting Drilling Fluids treatment agent, xylogen goods used are technical grade calcium lignin sulphonate.
5. the method being prepared additive for drilling fluid by green peel of walnut according to claim 1, is characterized in that, comprise the following steps:
The first step, rolls the particle being crushed to diameter 0.5-2cm by Cortex walnut, Cortex walnut is the rascal that fresh walnut strips down;
Second step, adds in hollander by above-mentioned green peel of walnut particle, adds the ethanol accounting for green peel of walnut massfraction 3%, soak 120min under normal temperature and pressure, and described ethanol is technical grade product;
3rd step, at normal temperatures and pressures, under 12000 revs/min, pull an oar the green peel of walnut particle soaked by second step 12min;
4th step, adds the formaldehyde solution accounting for green peel of walnut massfraction 1%, and accounts for the Sodium Benzoate of green peel of walnut massfraction 0.1% in above-mentioned green peel of walnut slurry, under 500 revs/min, and making beating 5min, described formaldehyde and Sodium Benzoate are technical grade product;
5th step, add in the green peel of walnut slurry after above-mentioned process and account for green peel of walnut massfraction 15% xylogen goods, under 300 revs/min, making beating 12min, obtains Environment-protecting Drilling Fluids treatment agent, and xylogen goods used are technical grade alkalization xylogen.
6. the method being prepared additive for drilling fluid by green peel of walnut according to claim 1, is characterized in that, comprise the following steps:
The first step, rolls the particle being crushed to diameter 1-2cm by Cortex walnut, Cortex walnut is the rascal that fresh walnut strips down;
Second step, adds in hollander by above-mentioned green peel of walnut particle, adds the ethanol accounting for green peel of walnut massfraction 10%, soak 50min under normal temperature and pressure, and described ethanol is technical grade product;
3rd step, at normal temperatures and pressures, under 9000 revs/min, pull an oar the green peel of walnut particle soaked by second step 15min;
4th step, adds the formaldehyde solution accounting for green peel of walnut massfraction 0.8%, and accounts for the Sodium Benzoate of green peel of walnut massfraction 0.1% in above-mentioned green peel of walnut slurry, under 300 revs/min, and making beating 10min, described formaldehyde and Sodium Benzoate are chemical pure product;
5th step, add in the green peel of walnut slurry after above-mentioned process and account for green peel of walnut massfraction 20% xylogen goods, under 400 revs/min, making beating 8min, obtain Environment-protecting Drilling Fluids treatment agent, the technical grade alkalization xylogen of xylogen goods used to be mass ratio be 1:1 and calcium lignin sulphonate.
CN201310568632.3A 2013-11-15 2013-11-15 Method and the application of additive for drilling fluid is prepared by green peel of walnut Expired - Fee Related CN103555298B (en)

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