CN108728054A - A kind of oil base drilling fluid fluid loss additive and preparation method thereof - Google Patents
A kind of oil base drilling fluid fluid loss additive and preparation method thereof Download PDFInfo
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- CN108728054A CN108728054A CN201710266952.1A CN201710266952A CN108728054A CN 108728054 A CN108728054 A CN 108728054A CN 201710266952 A CN201710266952 A CN 201710266952A CN 108728054 A CN108728054 A CN 108728054A
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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
- C09K8/035—Organic additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
- C08B15/05—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur
- C08B15/06—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur containing nitrogen, e.g. carbamates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B3/00—Preparation of cellulose esters of organic acids
- C08B3/14—Preparation of cellulose esters of organic acids in which the organic acid residue contains substituents, e.g. NH2, Cl
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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
- C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
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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
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- Life Sciences & Earth Sciences (AREA)
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
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- Oil, Petroleum & Natural Gas (AREA)
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Abstract
The present invention relates to a kind of oil base drilling fluid fluid loss additives and preparation method thereof; under nitrogen protection; NaOH solution, organic solvent, purified cotton are sequentially added into reaction kettle; alkalize 1-2h at 20-25 DEG C, and monoxone is added, after being warming up to 50-80 DEG C of reaction 1-2h; using glacial acetic acid tune pH value to 4-6; organic amine is added, after being warming up to 140-180 DEG C of reaction 1-2h, discharging obtains fluid loss additive of oil-base drilling fluid.Oil base fluid loss additive provided by the invention can be suitable for diesel oil, white oil and synthetic base drilling fluid system, and product is environmentally friendly, filtrate reducing significant effect and preparation method and required appointed condition are simple, easy to implement.
Description
Technical field
The present invention relates to a kind of oil base drilling fluid fluid loss additive and preparation method thereof, oil base drilling fluid prepared by the present invention
It is suitable for oil drilling field of engineering technology with fluid loss additive.
Background technology
In recent years, being continuously increased with domestic and international energy demand, petroleum exploration and development is gradually to deep and bad ground
Drilling, the quantity of the Holes of Complicated Wells such as drilling deep wells, ultradeep well, high angle hole, multilateral well, horizontal well is more and more, in addition, to non-
The exploitation of conventional gas and oil resource, the demand to oil base drilling fluid gradually increase.Fluid loss additive is as one in additive for drilling fluid
The essential ingredient of kind, main function is that drilling fluid is made to form thin and compact mud cake on the borehole wall, to play filtrate reducing
And the effects that improvement of mud cake, it is to safeguard stabilizing mud properties, improves drilling fluid rheology, reduces harmful liquid to ground
Layer leak-off and stabilizing borehole, the important chemical treatments for ensureing hole diameter rule and oil-gas Layer.It for safe and efficient drilling well,
Prevent drilling failure from having important role.The country is also fewer to the development of oil base drilling fluid fluid loss additive, main
If pitch class and organic amine are modified humic acids fluid loss additive, wherein asphalt product have pollution environment, dosage big and
The shortcomings that influencing drilling speed, limits it use during currently used oil base drilling fluid is formulated；Organic amine is modified humic acids drop
Fluid loss agents have disperses bad defect in oil base drilling fluid, and especially in the base oil of low toxic and environment-friendly type, dispersibility is more
Difference, filtrate reducing effect also have certain gap compared with asphalt product.
Invention content
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide it is a kind of do not have environmental pollution, in oil base drilling fluid
In have dispersion performance it is good, with excellent filtrate reducing effect fluid loss additive of oil-base drilling fluid and preparation method thereof.
What the purpose of the present invention was achieved through the following technical solutions：A kind of oil base drilling fluid fluid loss additive, feature exist
In counting in parts by weight, including following component：Purified cotton：50 parts, organic solvent：400-500 parts；NaOH solution：100-120
Part；Monoxone：100-137 parts；Organic amine：100-200 parts.
Usually, the concentration of the NaOH solution is by mass percentage：45%-50%.
The organic solvent is one or several kinds of mixtures in isopropanol, toluene, ethyl alcohol, acetone.
The organic amine is C14-C18One or more of kiber alkyl amine, secondary amine mix.
The preparation method of oil base drilling fluid fluid loss additive of the present invention, it is characterised in that comprise the steps of：In nitrogen
Under gas shielded, NaOH solution, organic solvent, purified cotton are sequentially added into reaction kettle, alkalize 1-2h at 20-25 DEG C, is added
Monoxone, using glacial acetic acid tune pH value to 4-6, is added organic amine, is warming up to 140-180 after being warming up to 50-80 DEG C of reaction 1-2h
DEG C reaction 1-2h after, press filtration discharges to obtain fluid loss additive of oil-base drilling fluid.
The preferably preparation method is：Under nitrogen protection, NaOH solution, You Jirong are sequentially added into reaction kettle
Agent, purified cotton, alkalize 1.5h at 20-25 DEG C, and monoxone is added, after being warming up to 50 DEG C of reaction 1-2h, using glacial acetic acid tune pH
Organic amine is added to 4-6 in value, and after being warming up to 180 DEG C of reaction 2h, press filtration discharges to obtain fluid loss additive of oil-base drilling fluid.
The present invention has the following advantages：
The oil base fluid loss additive raw material of the present invention is easy to get, and preparation process is simple；Fluid loss additive is cellulose derivative, environment friend
It is good；The fluid loss additive easily disperses in oil base drilling fluid, good with other additive for drilling fluid compatibilities.
Specific implementation mode
In order to better understand the present invention, the content of invention is furtherd elucidate with reference to embodiment, but the present invention's is interior
Appearance is not limited only to the following examples.
Embodiment 1
Under nitrogen protection, 120 parts of a concentration of 45%NaOH solution, 500 parts of isopropanols, 50 parts of essences are sequentially added into reaction kettle
Cotton processed is sufficiently stirred, and alkalize 1h at 20 DEG C, and 100 parts of monoxones are added, after being warming up to 50 DEG C of reaction 1h, using glacial acetic acid tune pH
100 parts of octadecyl primary amines are added to 4-6 in value, and after being warming up to 140 DEG C of reaction 1h, press filtration discharges to obtain oil base drilling fluid drop filter
Lose agent.
Embodiment 2
Under nitrogen protection, 100 parts of a concentration of 47%NaOH solution, 400 parts of isopropanols, 50 parts of essences are sequentially added into reaction kettle
Cotton processed is sufficiently stirred, and alkalize 1h at 20 DEG C, and 137 parts of monoxones are added, after being warming up to 50 DEG C of reaction 1h, using glacial acetic acid tune pH
200 parts of myristyl primary amine are added to 4-6 in value, and after being warming up to 140 DEG C of reaction 1h, press filtration discharges to obtain oil base drilling fluid drop filter
Lose agent.
Embodiment 3
Under nitrogen protection, 100 parts of a concentration of 46%NaOH solution, 400 parts of toluene are sequentially added into reaction kettle, 50 parts refined
Cotton is sufficiently stirred, and alkalize 1.5h at 20 DEG C, and 120 parts of monoxones are added, after being warming up to 50 DEG C of reaction 2h, using glacial acetic acid tune pH
150 parts of cetyl primary amine are added to 4-6 in value, and after being warming up to 150 DEG C of reaction 2h, press filtration discharges to obtain oil base drilling fluid drop filter
Lose agent.
Embodiment 4
Under nitrogen protection, 120 parts of a concentration of 50%NaOH solution, 500 parts of ethyl alcohol are sequentially added into reaction kettle, 50 parts refined
Cotton is sufficiently stirred, and alkalize 2h at 20 DEG C, and 137 parts of monoxones are added, after being warming up to 70 DEG C of reaction 2h, using glacial acetic acid tune pH value
To 4-6,150 parts of octadecyl primary amines are added, after being warming up to 180 DEG C of reaction 2h, press filtration discharges to obtain oil base drilling fluid filtrate reducing
Agent.
Embodiment 5
Under nitrogen protection, 100 parts of a concentration of 45%NaOH solution, 400 parts of ethyl alcohol are sequentially added into reaction kettle, 50 parts refined
Cotton is sufficiently stirred, and alkalize 1h at 20 DEG C, and 100 parts of monoxones are added, after being warming up to 50 DEG C of reaction 1h, using glacial acetic acid tune pH value
To 4-6,100 parts of heptadecyl primary amine are added, after being warming up to 140 DEG C of reaction 1h, press filtration discharges to obtain oil base drilling fluid filtrate reducing
Agent.
Embodiment 6
Under nitrogen protection, 120 parts of a concentration of 48%NaOH solution, 500 parts of acetone are sequentially added into reaction kettle, 50 parts refined
Cotton is sufficiently stirred, and alkalize 2h at 20 DEG C, and 137 parts of monoxones are added, after being warming up to 80 DEG C of reaction 2h, using glacial acetic acid tune pH value
To 4-6,200 parts of octadecyl primary amines are added, after being warming up to 180 DEG C of reaction 2h, press filtration discharges to obtain oil base drilling fluid filtrate reducing
Agent.
Embodiment 7
Under nitrogen protection, 110 parts of a concentration of 50%NaOH solution, 450 parts of isopropanols, 50 parts of essences are sequentially added into reaction kettle
Cotton processed is sufficiently stirred, and alkalize 1.5h at 20 DEG C, and 117 parts of monoxones are added, after being warming up to 75 DEG C of reaction 1.5h, using glacial acetic acid
It adjusts pH value to 4-6,150 parts of myristyl primary amine is added, after being warming up to 170 DEG C of reaction 1.5h, press filtration discharges to obtain oil base drilling well
Liquid fluid loss additive.
Embodiment 8
Under nitrogen protection, 110 parts of a concentration of 47%NaOH solution, 460 parts of toluene are sequentially added into reaction kettle, 50 parts refined
Cotton is sufficiently stirred, and alkalize 1.5h at 20 DEG C, and 120 parts of monoxones are added, after being warming up to 60 DEG C of reaction 2h, using glacial acetic acid tune pH
160 parts of cetyl primary amine are added to 4-6 in value, and after being warming up to 160 DEG C of reaction 2h, press filtration discharges to obtain oil base drilling fluid drop filter
Lose agent.
Embodiment 9
Under nitrogen protection, 115 parts of a concentration of 45%NaOH solution, 450 parts of ethyl alcohol are sequentially added into reaction kettle, 50 parts refined
Cotton is sufficiently stirred, and alkalize 1h at 20 DEG C, and 100 parts of monoxones are added, after being warming up to 50 DEG C of reaction 1h, using glacial acetic acid tune pH value
To 4-6,100 parts of heptadecyl primary amine are added, after being warming up to 140 DEG C of reaction 1h, press filtration discharges to obtain oil base drilling fluid filtrate reducing
Agent.
Embodiment 10
Under nitrogen protection, 117 parts of a concentration of 45%NaOH solution, 500 parts of ethyl alcohol are sequentially added into reaction kettle, 50 parts refined
Cotton is sufficiently stirred, and alkalize 1h at 23 DEG C, and 120 parts of monoxones are added, after being warming up to 73 DEG C of reaction 1h, using glacial acetic acid tune pH value
To 4-6,100 parts of heptadecyl primary amine are added, after being warming up to 140 DEG C of reaction 1h, press filtration discharges to obtain oil base drilling fluid filtrate reducing
Agent.
Performance evaluation
Performance evaluation is carried out to embodiment 1-10 samples.
Diesel oil base drilling fluid formula：240mL diesel oil+6g organoclay+60mL 20%CaCl2Solution+12g primary emulsions+4g
Auxiliary emulsifier+12g fluid loss additives.
White oil base drilling fluid formula：240mL5# white oil+6g organoclay+60mL 20%CaCl2Solution+12g primary emulsions+
Auxiliary emulsifier+12g the fluid loss additives of 4g.
Synthetic base drilling fluid formula：240 mL LAO+6g organoclay+60mL 20%CaCl2Solution+12g primary emulsions+4g
Auxiliary emulsifier+12g fluid loss additives.
Performance of the test fluid loss additive in these three drilling fluids respectively, test result is as follows.
Test result in 1 diesel oil base drilling fluid of table
Test result in 2 white oil base drilling fluid of table
Test result in 3 synthetic base drilling fluid of table
It can be seen that from the data of table 1, table 2, table 3：Drop is added in diesel oil base drilling fluid, white oil base drilling fluid, synthetic base drilling fluid
Its API leak-off and high temperature and high pressure filter loss after fluid loss agents, the drilling fluid than no addition fluid loss agents is much smaller, illustrates the present invention's
Filtrate reducing significant effect of the fluid loss additive in oil base drilling fluid.
Claims (6)
1. a kind of oil base drilling fluid fluid loss additive, which is characterized in that count in parts by weight, including following component：Chemical cellulose >
96% purified cotton：50 parts, organic solvent：400-500 parts；NaOH solution：100-120 parts；Monoxone：100-137 parts；It is organic
Amine：100-200 parts.
2. a kind of preparation method of oil base drilling fluid fluid loss additive according to claim 1, it is characterised in that described
The concentration of NaOH solution is 45%-50% by mass percentage.
3. a kind of preparation method of oil base drilling fluid fluid loss additive according to claim 1, it is characterised in that described
Organic solvent is one or several kinds of mixtures in isopropanol, toluene, ethyl alcohol, acetone.
4. a kind of preparation method of oil base drilling fluid fluid loss additive according to claim 1, it is characterised in that described
Organic amine is C14-C18One or more of kiber alkyl amine, secondary amine mix.
5. a kind of preparation method of oil base drilling fluid fluid loss additive according to claim 1, it is characterised in that comprising with
Lower step：Under nitrogen protection, NaOH solution, organic solvent, purified cotton are sequentially added into reaction kettle, the alkali at 20-25 DEG C
Change 1-2h, monoxone is added, after being warming up to 50-80 DEG C of reaction 1-2h, using glacial acetic acid tune pH value to 4-6, organic amine is added, rises
After temperature to 140-180 DEG C of reaction 1-2h, press filtration discharges to obtain fluid loss additive of oil-base drilling fluid.
6. a kind of preparation method of oil base drilling fluid fluid loss additive according to claim 5, it is characterised in that it is described
Under nitrogen protection, NaOH solution, organic solvent, purified cotton are sequentially added into reaction kettle, alkalize 1.5h at 20-25 DEG C, adds
Enter monoxone, after being warming up to 50 DEG C of reaction 1-2h, using glacial acetic acid tune pH value to 4-6, organic amine is added, is warming up to 180 DEG C instead
After answering 2h, press filtration discharges to obtain fluid loss additive of oil-base drilling fluid.
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| CN201710266952.1A CN108728054B (en) | 2017-04-21 | 2017-04-21 | Filtrate reducer for oil-based drilling fluid and preparation method thereof |
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| CN201710266952.1A CN108728054B (en) | 2017-04-21 | 2017-04-21 | Filtrate reducer for oil-based drilling fluid and preparation method thereof |
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| CN108728054B CN108728054B (en) | 2021-07-23 |
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