CN109181657A - Drilling fluid anti-collapse and anti-falling filtration agent - Google Patents
Drilling fluid anti-collapse and anti-falling filtration agent Download PDFInfo
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- CN109181657A CN109181657A CN201811100885.7A CN201811100885A CN109181657A CN 109181657 A CN109181657 A CN 109181657A CN 201811100885 A CN201811100885 A CN 201811100885A CN 109181657 A CN109181657 A CN 109181657A
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- drilling fluid
- collapse
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- sylvite
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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
- C09K8/03—Specific additives for general use in well-drilling compositions
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
-
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Drilling fluid anti-collapse and anti-falling filtration agent, belong to the technical field of oil field chemical, according to parts by weight, including 8-10 parts of sodium hydroxide, 10-15 parts of sodium pyrophosphate, 5-10 parts of improved silica, 3-5 parts of fluoroalkyl silanes, hydrolyzed polyacrylonitrile -30-35 parts of sylvite, organic-silicon-modified humic acid 15-25 parts, 5-10 parts of aluminum stearate.Fluid loss additive effect of the present invention is that drilling shaft lining filtrate reducing water is small, prevents cave-in.The present invention is nontoxic, harmless, is safe green environmentally friendly machine, can be used as the widely used auxiliary agent of oil drilling.
Description
Technical field
The invention belongs to the technical fields of oil field chemical, design drilling fluid anti-collapse and anti-falling filtration agent, are drilling fluid mud
Slurry auxiliary agent, acts on small for drilling shaft lining filtrate reducing water, prevents cave-in.The present invention is nontoxic, harmless, is safe green environment-friendly type
Product can be used as the widely used auxiliary agent of oil drilling.
Background technique
Fluid loss additive is to reduce harmful liquid to stratum leak-off and stabilizing borehole, guarantee to stabilizing mud properties
The important mud conditioner of hole diameter rule.Fluid loss additive is most important one kind in oil well cement additive, in cementing technology set
Usually require to be added fluid loss additive when pipe, production string and tail pipe to control the liquid phase leak-off in cement slurry.It to wellbore stability,
Protection oil-gas Layer plays critically important effect.
Due to the presence of geothermal gradient, wellbore is deeper, and the temperature in pit shaft will become higher.China's western oil field (temperature
Degree gradient be 2.5-3.0 DEG C/100m) be more than 7000m ultradeep well and east oilfields (temperature gradient is 3.5-4.3 DEG C/100m)
Deep-well bottom hole temperature (BHT) more than 5000m may be more than 150 DEG C, and along with severe geology such as huge thick saline bed/brine layers
Environment, under conditions of high temperature and high salt (especially saturated salt), traditional high-temperature resistant water-based fluid loss additive for boring fluid effect is big
Width reduces, even fails, and causes the accident and takes place frequently, influences normally to creep into.
Summary of the invention
The present invention is to solve the above problems, devise a kind of drilling fluid anti-collapse and anti-falling filtration agent, fluid loss additive of the present invention, energy
The filter loss of high-temperature drilling liquid system is enough effectively reduced, maintains the stabilization of drilling fluid system performance, solves probing high temperature deep well mistake
In journey due to drilling fluid filtration it is excessive caused by borehole well instability the problems such as.
The present invention be realize its purpose the technical solution adopted is that:
Drilling fluid anti-collapse and anti-falling filtration agent, according to parts by weight, including 8-10 parts of sodium hydroxide, 10-15 parts of sodium pyrophosphate,
5-10 parts of improved silica, 3-5 parts of fluoroalkyl silanes, hydrolyzed polyacrylonitrile -30-35 parts of sylvite, organic-silicon-modified rotten plant
It is 15-25 parts sour, 5-10 parts of aluminum stearate.
Drilling fluid anti-collapse and anti-falling filtration agent, according to parts by weight, including 8 parts of sodium hydroxide, 10 parts of sodium pyrophosphate, modified two
5 parts of silica, 3 parts of fluoroalkyl silanes, 30 parts of hydrolyzed polyacrylonitrile-sylvite, 15 parts of organic-silicon-modified humic acid, aluminum stearate
5 parts.
Drilling fluid anti-collapse and anti-falling filtration agent, according to parts by weight, including 10 parts of sodium hydroxide, it is 15 parts of sodium pyrophosphate, modified
0 part of silica 1,5 parts of fluoroalkyl silanes, 35 parts of hydrolyzed polyacrylonitrile-sylvite, 25 parts of organic-silicon-modified humic acid is stearic
10 parts of sour aluminium.
Drilling fluid anti-collapse and anti-falling filtration agent, according to parts by weight, including 9 parts of sodium hydroxide, 12 parts of sodium pyrophosphate, modified two
8 parts of silica, 4 parts of fluoroalkyl silanes, 33 parts of hydrolyzed polyacrylonitrile-sylvite, 20 parts of organic-silicon-modified humic acid, aluminum stearate
8 parts.
Drilling fluid anti-collapse and anti-falling filtration agent, according to parts by weight, including 8.5 parts of sodium hydroxide, it is 14 parts of sodium pyrophosphate, modified
9 parts of silica, 4.5 parts of fluoroalkyl silanes, 34 parts of hydrolyzed polyacrylonitrile-sylvite, 18 parts of organic-silicon-modified humic acid is stearic
6 parts of sour aluminium.
Drilling fluid anti-collapse and anti-falling filtration agent, according to parts by weight, including 9.5 parts of sodium hydroxide, it is 11 parts of sodium pyrophosphate, modified
7 parts of silica, 3.5 parts of fluoroalkyl silanes, 32 parts of hydrolyzed polyacrylonitrile-sylvite, 23 parts of organic-silicon-modified humic acid is stearic
9 parts of sour aluminium.
The beneficial effects of the present invention are:
1, temperature resistance ability is strong, using temperature up to 180 DEG C, has good filtrate-loss control can be with extensive antipollution energy
Power.
2, viscosity effect is low, has excellent rheological characteristic and higher rate of penetration.
3, there is preferable retaining wall and anti-collapse function, reduce the generation of abnormal conditions in drilling process to the maximum extent.
4, it is used cooperatively with SF260 drilling fluid with fluosilicic high-temperature viscosity reducer, drilling mud performance is more excellent, can largely save
Other bored materials are saved, overall economic efficiency is more preferable.
5, non-ignitable, not quick-fried, nontoxic, harmless.
Sodium hydroxide has the function of alkalization in the present invention, and sodium pyrophosphate plays the role of emulsion dispersion, modified titanium dioxide
Silicon has the function of retaining wall, and the addition of fluoroalkyl silanes has stronger temperature resistance ability, the addition of hydrolyzed polyacrylonitrile-sylvite
Play the role of impermeabilisation, salt resistance, anti-collapse, retaining wall is played in the addition of organic-silicon-modified humic acid, and aluminum stearate is profit
Sliding to act on, functionally mutually support, collective effect realize that temperature resistance ability is strong between said components, promote drilling efficiency, environmentally friendly
Free of contamination effect.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below.
One, specific embodiment
Embodiment 1
Drilling fluid anti-collapse and anti-falling filtration agent, according to parts by weight, including 8 parts of sodium hydroxide, 10 parts of sodium pyrophosphate, modified two
5 parts of silica, 3 parts of fluoroalkyl silanes FAS, 30 parts of hydrolyzed polyacrylonitrile-sylvite, 15 parts of organic-silicon-modified humic acid is stearic
5 parts of sour aluminium.
Embodiment 2
Drilling fluid anti-collapse and anti-falling filtration agent, according to parts by weight, including 10 parts of sodium hydroxide, it is 15 parts of sodium pyrophosphate, modified
0 part of silica 1,5 parts of fluoroalkyl silanes, 35 parts of hydrolyzed polyacrylonitrile-sylvite, 25 parts of organic-silicon-modified humic acid is stearic
10 parts of sour aluminium.
Embodiment 3
Drilling fluid anti-collapse and anti-falling filtration agent, according to parts by weight, including 9 parts of sodium hydroxide, 12 parts of sodium pyrophosphate, modified two
8 parts of silica, 4 parts of fluoroalkyl silanes, 33 parts of hydrolyzed polyacrylonitrile-sylvite, 20 parts of organic-silicon-modified humic acid, aluminum stearate
8 parts.
Embodiment 4
Drilling fluid anti-collapse and anti-falling filtration agent, according to parts by weight, including 8.5 parts of sodium hydroxide, it is 14 parts of sodium pyrophosphate, modified
9 parts of silica, 4.5 parts of fluoroalkyl silanes, 34 parts of hydrolyzed polyacrylonitrile-sylvite, 18 parts of organic-silicon-modified humic acid is stearic
6 parts of sour aluminium.
Embodiment 5
Drilling fluid anti-collapse and anti-falling filtration agent, according to parts by weight, including 9.5 parts of sodium hydroxide, it is 11 parts of sodium pyrophosphate, modified
7 parts of silica, 3.5 parts of fluoroalkyl silanes, 32 parts of hydrolyzed polyacrylonitrile-sylvite, 23 parts of organic-silicon-modified humic acid is stearic
9 parts of sour aluminium.
Two, analysis of experiments
The following standards of test basis of the present invention
GB/T 6682-2008 water for analytical laboratory use-Specification and test methods
GB/T 16783.1-2006 industrial gas oil drilling fluid on-the-spot test part 1 water-base drilling fluid
SY/T 5444-1992 drilling fluid evaluation soil
Sodium bentonite is used in the test of SY 5490-1993 drilling fluid
1, the performance indicator of drilling fluid anti-collapse and anti-falling filtration agent of the present invention
Table 1
1.1 test apparatus
A) high-speed mixer: load speed (11000 ± 300) r/min；
B) 6.3.1 requirement in GB/T 16783.1-2006 direct-reading viscosimeter: should be met；
C) balance: scale division value 0.01g, 0.1mg；
D) (105 ± 3) DEG C thermostatic drying chamber: are can be controlled in；
E) regulation of 7.3.1.1~7.3.1.5 in GB/T 16783.1-2006 high pressure high temperature filter tester: should be met；
F) shale expansion instrument: NP-01 type or similar product；
1.2 reagents and material
A) filter paper: No. whatman50 or similar product；
B) sodium bicarbonate: chemistry is pure；
C) sodium chloride: chemistry is pure；
D) sodium hydroxide: chemistry is pure, is made into 20% aqueous solution；
E) requirement of SY/T 5444-1992 drilling fluid evaluation soil: should be met；
F) requirement of SY5490-1993 drilling fluid test sodium soil: should be met；
G) calcium bentonite: after 5% sodium carbonate processing, performance should reach drilling well swelling in GB/T 5005-2001
The technical requirement of soil or OCMA soil；
H) requirement of 6682-2008 tertiary effluent of GB/T distilled water: should be met；
I) pH test paper: color range 0.5.
1.3 dry vector
It weighs sample 5.0g to be put into the weighing bottle of constant weight, put in an oven in (105 ± 3) DEG C dry 3h, taking-up is set
It in drier, is cooled to room temperature, weighs, and calculated with (1) formula:
In formula:
W --- dry vector, %
m1--- sample mass, g；
m2--- sample adds weighing bottle quality, g before drying；
m3--- sample adds weighing bottle quality, g after baking.
1.4 samples starch apparent viscosity, high temperature and high pressure filter loss
1.4.1 base is starched
In the specimen cup for filling 350mL distilled water, 21.0g sodium bentonite and 16.0g evaluation soil, high-speed stirred is added
20min, is at least interrupted among it twice to scrape the sample being adhered on wall of cup, and curing in airtight condition is for 24 hours at (25 ± 1) DEG C.
1.4.2 test slurry and measurement
1.4.2.1 two parts of base slurries are taken to be separately added into sample 10.5g (based on butt), high-speed stirred 10min adds chlorination
Sodium 7.0g, 20% sodium hydroxide solution 5mL add up high-speed stirred 20min, should interrupt be adhered on wall of cup with scraping twice therebetween
Slurries.Test slurry is transferred in maintenance tank, 16h is rolled at 2660 DEG C of high temperature, maintenance tank is taken out, is opened after cooling, high speed
It stirs 5min (few drops of defoaming agents can be added if any bubble), measures examination by GB/T 16783.1-2006 6.3 and 7.3 regulation
Test slurry apparent viscosity and high temperature and high pressure filter loss.
The measurement of 1.5 shale expansion reduced rates
The calcium bentonite 10.0g for weighing dry 4h at 105 ± 3 DEG C is fitted into shale expansion instrument and surveys in cylinder, adds on press machine
4.0MPa pressure simultaneously keeps 5min, and test core is made, and the survey cylinder equipped with rock core is mounted on shale expansion instrument, is by concentration
Cylinder is surveyed in 3% sample solution injection, measures the line swell increment of 8h, while making blank test with distilled water.Rock core blank swell increment
It should be greater than 7mm, otherwise should replace rock core soil.
It calculates:
In formula:
B --- shale expansion reduced rate, %；
H0Distilled water rock core line swell increment, mm；
H -3% sample solution rock core line swell increment, mm.
1.6 net content
Net content is able to satisfy with scale division value and franchise weighs desired measurement instrument and weighs.
2, the test of viscosity effect
Drilling fluid of the present invention is configured to 1% aqueous solution with anti-collapse and anti-falling filtration agent, is measured, is tied using six fast viscosimeters
Fruit is referring to table 2.
Table 2
As shown in Table 2, the viscosity effect of anti-collapse and anti-falling filtration agent of the invention is very low, shows the high temperature in control drilling fluid
While high filter pressing loss, it is more advantageous to the rheological characteristic control of ultra high density drilling fluid.
Claims (6)
1. drilling fluid anti-collapse and anti-falling filtration agent, which is characterized in that according to parts by weight, including 8-10 parts of sodium hydroxide, pyrophosphoric acid
10-15 parts of sodium, 5-10 parts of improved silica, 3-5 parts of fluoroalkyl silanes, hydrolyzed polyacrylonitrile -30-35 parts of sylvite is organic
15-25 parts of Si modification humic acid, 5-10 parts of aluminum stearate.
2. drilling fluid anti-collapse and anti-falling filtration agent according to claim 1, which is characterized in that according to parts by weight, including hydrogen
8 parts of sodium oxide molybdena, 10 parts of sodium pyrophosphate, 5 parts of improved silica, 3 parts of fluoroalkyl silanes, 30 parts of hydrolyzed polyacrylonitrile-sylvite,
15 parts of organic-silicon-modified humic acid, 5 parts of aluminum stearate.
3. drilling fluid anti-collapse and anti-falling filtration agent according to claim 1, which is characterized in that according to parts by weight, including hydrogen
10 parts of sodium oxide molybdena, 15 parts of sodium pyrophosphate, 10 parts of improved silica, 5 parts of fluoroalkyl silanes, hydrolyzed polyacrylonitrile-sylvite 35
Part, 25 parts of organic-silicon-modified humic acid, 10 parts of aluminum stearate.
4. drilling fluid anti-collapse and anti-falling filtration agent according to claim 1, which is characterized in that according to parts by weight, including hydrogen
9 parts of sodium oxide molybdena, 12 parts of sodium pyrophosphate, 8 parts of improved silica, 4 parts of fluoroalkyl silanes, 33 parts of hydrolyzed polyacrylonitrile-sylvite,
20 parts of organic-silicon-modified humic acid, 8 parts of aluminum stearate.
5. drilling fluid anti-collapse and anti-falling filtration agent according to claim 1, which is characterized in that according to parts by weight, including hydrogen
8.5 parts of sodium oxide molybdena, 14 parts of sodium pyrophosphate, 9 parts of improved silica, 4.5 parts of fluoroalkyl silanes, hydrolyzed polyacrylonitrile-sylvite
34 parts, 18 parts of organic-silicon-modified humic acid, 6 parts of aluminum stearate.
6. drilling fluid anti-collapse and anti-falling filtration agent according to claim 1, which is characterized in that according to parts by weight, including hydrogen
9.5 parts of sodium oxide molybdena, 11 parts of sodium pyrophosphate, 7 parts of improved silica, 3.5 parts of fluoroalkyl silanes, hydrolyzed polyacrylonitrile-sylvite
32 parts, 23 parts of organic-silicon-modified humic acid, 9 parts of aluminum stearate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811100885.7A CN109181657A (en) | 2018-09-20 | 2018-09-20 | Drilling fluid anti-collapse and anti-falling filtration agent |
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| CN201811100885.7A CN109181657A (en) | 2018-09-20 | 2018-09-20 | Drilling fluid anti-collapse and anti-falling filtration agent |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110591667A (en) * | 2019-09-29 | 2019-12-20 | 重庆威能钻井助剂有限公司 | High-temperature-resistant fluid loss additive for drilling fluid and preparation method thereof |
| CN112521920A (en) * | 2020-12-09 | 2021-03-19 | 江西省三汇科技有限公司 | Humic acid-containing drilling mud treating agent |
| CN115466603A (en) * | 2022-11-01 | 2022-12-13 | 中国石油大学(华东) | 240 ℃ resistant and salt resistant plugging type water-based drilling fluid, and preparation method and application thereof |
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| CN115466603A (en) * | 2022-11-01 | 2022-12-13 | 中国石油大学(华东) | 240 ℃ resistant and salt resistant plugging type water-based drilling fluid, and preparation method and application thereof |
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