CN108977179A - A kind of oil base drilling fluid compound emulsifying agent - Google Patents
A kind of oil base drilling fluid compound emulsifying agent Download PDFInfo
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- CN108977179A CN108977179A CN201710407218.2A CN201710407218A CN108977179A CN 108977179 A CN108977179 A CN 108977179A CN 201710407218 A CN201710407218 A CN 201710407218A CN 108977179 A CN108977179 A CN 108977179A
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- drilling fluid
- base drilling
- emulsifying agent
- primary emulsion
- oil base
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- 0 CC(*)C(C)(*)CO*(*)*(C)C(C(*)*)C(C1)N1O** Chemical compound CC(*)C(C)(*)CO*(*)*(C)C(C(*)*)C(C1)N1O** 0.000 description 1
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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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- 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)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention discloses a kind of oil base drilling fluid compound emulsifying agent, its following components: primary emulsion: modified alkylbenzene sulfonates；Auxiliary emulsifier: the mixture of one or both of this disk -60, Span-80；White oil: 5# white oil or 7# white oil.Primary emulsion: auxiliary emulsifier: the quality proportioning of white oil is 2~4:1~2:1~2.The primary emulsion is to sequentially add quality proportioning in a kettle for 3~4:1~2:2~3:0.5~1 dimeric dibasic acid, fatty alcohol polyol ether, hydroxyl triethylamine and sulfamic acid, and after being uniformly mixed, first 115-125 DEG C is reacted 3~4 hours；Then it is cooled to room temperature after being heated rapidly to 220-240 DEG C of reaction 1.5-2.5 hours, primary emulsion is made.The compound emulsifying agent overcomes the defect that previous emulsifier production must be used cooperatively with primary emulsion, auxiliary emulsifier, while also having wetting action, and wetting agent need not be additionally used in oil base drilling fluid.
Description
Technical field
The present invention relates to technical field of petrochemical industry more particularly to a kind of oil base drilling fluid compound emulsifying agent and preparation sides
Method.
Background technique
Since in shale oil reservoir development process, there are borehole well instabilities, long horizontal sections drilling well caused by shale hydration collapsing
The problems such as wellbore cleaning and regular wellbore, currently, mostly using oil base drilling fluid technology to solve this problem both at home and abroad.It is right
In oil base drilling fluid system, emulsifier and wetting agent are wherein important inorganic agents, are related to stable system, compatibility etc..Mesh
That there are adaptability is poor for preceding conventional oil base drilling fluid emulsifier, dosage is big, limited emulsifying capacity, the stability of emulsion of formation
It is poor, the disadvantages of temperature resistance is lower；And wetting agent there is also wettability powers low, Anti-temperature difference, it is at high cost the disadvantages of.
Summary of the invention
In order to solve the above-mentioned technical problem, the purpose of the present invention is to provide a kind of oil base drilling fluid compound emulsifying agent,
The compound emulsifying agent is the artificial synthesized surfactant with a variety of surface active groups, in oil through Molecular Design
It can play the role of emulsification and wetting in base drilling fluid simultaneously, and performance is stablized, temperature resistance is good, improves entire oil base drilling fluid
The stability and temperature resistance of system, have saved cost, simplify oil base drilling fluid system formulation.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of oil base drilling fluid compound emulsifying agent, composed of the following components:
Primary emulsion: modified alkylbenzene sulfonates
Auxiliary emulsifier: the mixture of one or both of this disk -60, Span-80
White oil: 5# white oil or 7# white oil
Primary emulsion: auxiliary emulsifier: the quality proportioning of white oil is 2~4:1~2:1~2.
In technical solution of the present invention, the preparation method of the modified alkylbenzene sulfonates, preparation step is as follows:
Dimeric dibasic acid, fatty alcohol polyol ether, hydroxyl triethylamine and sulfamic acid are added in a kettle, is uniformly mixed
Afterwards, it reacts 3~4 hours for first 115-125 DEG C；Then it is cooled to room temperature, is made after being heated rapidly to 220-240 DEG C of reaction 2 hours
Primary emulsion.
The dimeric dibasic acid, fatty alcohol polyol ether, hydroxyl triethylamine and sulfamic acid quality proportioning be 3~4:1~2:2~
3:0.5~1.
The dimeric dibasic acid refers mainly to the dimer of C 18 unsaturated fatty acid molecule aggregation generation, using oleic acid as raw material,
Atlapulgite is catalyst synthesis, can be commercially available.
The molecular formula of the fatty alcohol polyol ether are as follows:
The compound emulsifying agent of oil base drilling fluid provided by the invention is integrated emulsifier, has emulsion-stabilizing, demulsification electricity
The feature that pressure is high, wettability is good, which overcomes previous emulsifier production must be with primary emulsion, auxiliary emulsifier
The defect being used cooperatively, can reduce the addition number and additive amount of emulsifier in drilling fluid, so that the cost of drilling fluid is reduced,
Also there is wetting action simultaneously, wetting agent need not be additionally used in oil base drilling fluid.
Specific embodiment
The characteristics of below by the specific embodiment oil base drilling fluid compound emulsifying agent that present invention be described in more detail.
Embodiment one
Primary emulsion: preparation process are as follows: sequentially add dimeric dibasic acid, the rouge that quality proportioning is 4:2:3:0.5 in a kettle
The polynary ether of fat alcohol, hydroxyl triethylamine and sulfamic acid after being uniformly mixed, first react 4 hours for 115 DEG C；Then heating rapidly
It is cooled to room temperature after being reacted 2 hours to 240 DEG C to get primary emulsion.
Auxiliary emulsifier is Span-80.
White oil is 5# white oil.
Primary emulsion, auxiliary emulsifier, white oil are mixed by the mass ratio of 4:2:1, obtain oil base drilling fluid with compound
Emulsifier is denoted as 1# test emulsifier.
Embodiment two
Primary emulsion preparation process are as follows: sequentially add dimeric dibasic acid, the fat that quality proportioning is 4:2:3:0.5 in a kettle
The polynary ether of alcohol, hydroxyl triethylamine and sulfamic acid after being uniformly mixed, first react 4 hours for 120 DEG C；Then it is heated rapidly to
230 DEG C reaction 2 hours after be cooled to room temperature to get primary emulsion.Referring to embodiment one.
Auxiliary emulsifier is this disk -60.
White oil is 5# white oil.
Primary emulsion, auxiliary emulsifier, white oil are mixed by the mass ratio of 4:2:1, obtain oil base drilling fluid with compound
Emulsifier is denoted as 2# test emulsifier.
Embodiment three
Primary emulsion preparation method is referring to embodiment two.
Auxiliary emulsifier is Span-80.
White oil is 5# white oil.
Primary emulsion, auxiliary emulsifier, white oil are mixed by the mass ratio of 4:1:1, obtain oil base drilling fluid with compound
Emulsifier is denoted as 2# test emulsifier.
Example IV
1#, 2# and 3# test emulsifier of embodiment one, embodiment two and embodiment three, which are added separately to density, is
In the oil base drilling fluid of 1.55g/cm3,16h is rolled at 120 DEG C, to different oil base drilling fluid composite emulsifyings at 60 DEG C
Agent carries out performance evaluation, and parameter testing the results are shown in Table 1.
The performance comparison sheet of 1 oil base drilling fluid compound emulsifying agent of table
As known from Table 1: the oil base drilling fluid system that the compound emulsifying agent in the embodiment of the present invention is formed has good stream
Denaturation, electrical stability, ability resistant to high temperatures, whole system performance are stablized.
Claims (5)
1. a kind of oil base drilling fluid compound emulsifying agent, it is characterized in that: mainly by primary emulsion-modified alkylbenzene sulfonates, auxiliary
Emulsifier-this disk, white oil composition；2~4:1 of quality proportioning~2:1~2 of the primary emulsion, auxiliary emulsifier, white oil.
2. oil base drilling fluid compound emulsifying agent according to claim 1, it is characterized in that: this described disk is this disk -60, this
The mixture of one or both of disk -80；The white oil is 5# white oil or 7# white oil.
3. oil base drilling fluid compound emulsifying agent according to claim 1 or 2, it is characterized in that: the primary emulsion be
It is 3~4:1~2:2~3:0.5~1 dimeric dibasic acid, fatty alcohol polyol ether, three second of hydroxyl that quality proportioning is sequentially added in reaction kettle
Amine and sulfamic acid, after being uniformly mixed, first 115-125 DEG C is reacted 3~4 hours；Then it is heated rapidly to 220-240 DEG C instead
It is cooled to room temperature after answering 1.5-2.5 hours, primary emulsion is made.
4. oil base drilling fluid compound emulsifying agent according to claim 3, it is characterised in that: the dimeric dibasic acid refers mainly to 18
The dimer that the polymerization of carbon monounsaturated fatty acid molecule generates, using oleic acid as raw material, atlapulgite is catalyst synthesis.
5. according to the oil base drilling fluid compound emulsifying agent of claim 3 or 4, it is characterised in that: the fatty alcohol polyol ether
Molecular formula are as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710407218.2A CN108977179A (en) | 2017-06-02 | 2017-06-02 | A kind of oil base drilling fluid compound emulsifying agent |
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| CN201710407218.2A CN108977179A (en) | 2017-06-02 | 2017-06-02 | A kind of oil base drilling fluid compound emulsifying agent |
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| CN103897676A (en) * | 2012-12-27 | 2014-07-02 | 中国石油化工股份有限公司 | Alkylphenol ether carboxylate oil-based drilling fluid |
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| CN104388062A (en) * | 2014-10-24 | 2015-03-04 | 中国石油天然气集团公司 | Emulsive wetting agent for high-temperature resistant oil-based drilling well liquid, as well as preparation method and application of emulsive wetting agent |
| CN104610936A (en) * | 2014-12-31 | 2015-05-13 | 中国石油天然气集团公司 | Filtrate loss reducer for full oil-based drilling fluid, and preparation method of filtrate loss reducer |
| CN104861944A (en) * | 2015-04-30 | 2015-08-26 | 中国石油大学(华东) | Deepwater constant-rheology oil base drilling fluid |
| CN105154187A (en) * | 2015-09-18 | 2015-12-16 | 南京科润工业介质股份有限公司 | Emulsified liquid capable of replacing oil products and preparation method of emulsified liquid |
| CN105385425A (en) * | 2015-10-26 | 2016-03-09 | 中国石油大学(华东) | Palm oil base well drilling fluid and preparation method thereof |
| CN105586022A (en) * | 2014-10-22 | 2016-05-18 | 中国石油化工股份有限公司 | Water-in-oil based drilling fluid with high temperature resistance and preparation method thereof |
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2017
- 2017-06-02 CN CN201710407218.2A patent/CN108977179A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1566255A (en) * | 2003-07-03 | 2005-01-19 | 新疆石油管理局钻井工艺研究院 | Water-based non-clay drilling fluid having strong inhibition |
| CN102618227A (en) * | 2012-03-08 | 2012-08-01 | 陕西延长石油(集团)有限责任公司研究院 | Oil-based drilling fluid system for use in continental facies shale gas horizontal well |
| CN103897676A (en) * | 2012-12-27 | 2014-07-02 | 中国石油化工股份有限公司 | Alkylphenol ether carboxylate oil-based drilling fluid |
| CN103897671A (en) * | 2012-12-27 | 2014-07-02 | 中国石油化工股份有限公司 | High-performance composite oil-based emulsifier and its preparation method |
| CN105586022A (en) * | 2014-10-22 | 2016-05-18 | 中国石油化工股份有限公司 | Water-in-oil based drilling fluid with high temperature resistance and preparation method thereof |
| CN104388062A (en) * | 2014-10-24 | 2015-03-04 | 中国石油天然气集团公司 | Emulsive wetting agent for high-temperature resistant oil-based drilling well liquid, as well as preparation method and application of emulsive wetting agent |
| CN104610936A (en) * | 2014-12-31 | 2015-05-13 | 中国石油天然气集团公司 | Filtrate loss reducer for full oil-based drilling fluid, and preparation method of filtrate loss reducer |
| CN104861944A (en) * | 2015-04-30 | 2015-08-26 | 中国石油大学(华东) | Deepwater constant-rheology oil base drilling fluid |
| CN105154187A (en) * | 2015-09-18 | 2015-12-16 | 南京科润工业介质股份有限公司 | Emulsified liquid capable of replacing oil products and preparation method of emulsified liquid |
| CN105385425A (en) * | 2015-10-26 | 2016-03-09 | 中国石油大学(华东) | Palm oil base well drilling fluid and preparation method thereof |
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