CN110003865A - Water-in-oil emulsion and preparation method thereof and oil base drilling fluid - Google Patents
Water-in-oil emulsion and preparation method thereof and oil base drilling fluid Download PDFInfo
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- CN110003865A CN110003865A CN201910335958.9A CN201910335958A CN110003865A CN 110003865 A CN110003865 A CN 110003865A CN 201910335958 A CN201910335958 A CN 201910335958A CN 110003865 A CN110003865 A CN 110003865A
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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
- C09K8/032—Inorganic additives
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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
- C09K8/36—Water-in-oil emulsions
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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Abstract
A kind of water-in-oil emulsion and preparation method thereof and a kind of oil base drilling fluid.The water-in-oil emulsion includes oily phase, water phase and hydrophobically modified gaseous oxidation silicon, it and is mutually in terms of 100 parts by weight with the total content of the water phase by the oil, the content of the oil phase is 60 parts by weight to 90 parts by weight, the content of the water phase is 10 to 40 parts by weight, and the content of the hydrophobically modified gaseous oxidation silicon is 0.5 parts by weight to 1.5 parts by weight.The described method includes: the hydrophobically modified gaseous oxidation silicon to be dispersed in the oily phase and stir, hydrophobically modified gaseous oxidation silicon-oil dispersed system is obtained；The water phase is added in the hydrophobically modified gaseous oxidation silicon-oil dispersed system, carried out after stirring ultrasonic emulsification to get.The water-in-oil emulsion of the application can be used for simulating or constructing suitable for the drilling engineering of deep water and tundra low temperature formation without native phase oil base drilling fluid with excellent stability and wide warm area perseverance rheological property.
Description
Technical field
This application involves drilling technology field, espespecially a kind of water-in-oil emulsion and preparation method thereof and a kind of oil base drilling well
Liquid.
Background technique
The petroleum resources that deep water and tundra are contained are abundant, there is great potential.Compared with the drilling well of land, deep water high temperature and jelly
The ground environment of soil zone low temperature makes drilling well work face many technical problems.Depth in the Gulf of Mexico, China South Sea, West Africa sea area
Water drilling well temperature may be up to 200 DEG C, in the probing work on the ground such as Xinjiang, Qinghai, Tibet, Heilungkiang often in the environment of ultralow temperature
It carries out.This requires drilling fluids to be operated in wider temperature range.
It is both at home and abroad extremely limited for the research of deep water and tundra low temperature formation drilling fluid, and mostly uses water base brill
Well liquid carries out probing work.But water-base drilling fluid be difficult borehole well instability caused by the unconsolidated formation for being fully solved deep water superficial part, with
And the problems such as gas hydrates inhibition is poor in the environment of cryogenic high pressure.Oil base drilling fluid is with its excellent inhibition and surely
It is qualitative, become the first choice of Complex formation drilling.It is organic when high temperature however, contain organoclay in existing oil base drilling fluid system more
Irreversible flocculation and gelling will occur for soil；When low temperature, viscosity, the shear force substantial increase of drilling fluid, oil base drilling fluid meeting
There is apparent gelling phenomenon, to keep equivalent circulating density excessively high, and then the problems such as initiation leakage, for example, at 5 DEG C to 75 DEG C
In temperature range, the oil base drilling fluid system thickening containing organoclay is obvious, and rate of change in viscosity is up to 80%, significantly limits
Drilling efficiency.Therefore, the oil base drilling fluid system containing organoclay does not have good wide warm area perseverance rheological property, it is difficult to compared with
It is operated within the scope of wide temperature.
Therefore, it needs to develop a kind of drilling fluid suitable for deep water and tundra oil gas drilling.
Summary of the invention
This application provides a kind of water-in-oil emulsion and preparation method thereof and oil base drilling fluids, when using the water-in-oil type
When lotion simulation or building oil base drilling fluid, addition organoclay is no longer needed to, and obtained oil base drilling fluid has good width
Warm area perseverance rheological property is suitable for deep water and tundra oil gas drilling.
This application provides a kind of water-in-oil emulsion, the water-in-oil emulsion includes oily phase, water phase and hydrophobically modified
Gaseous oxidation silicon, and be mutually in terms of 100 parts by weight with the total content of the water phase by the oil, the content of the oil phase is 60 weights
Part is measured to 90 parts by weight, the content of the water phase is 10 to 40 parts by weight, and the content of the hydrophobically modified gaseous oxidation silicon is 0.5
Parts by weight are to 1.5 parts by weight.
In embodiments herein, the hydrophobically modified gaseous oxidation silicon can selected from the modified gaseous oxidation silicon of methyl,
The modified gaseous oxidation silicon of ethyl and isopropyl are modified any one or more in gaseous oxidation silicon.
In embodiments herein, the hydrophobically modified gaseous oxidation silicon can be the modified gaseous oxidation silicon of methyl.
In embodiments herein, the three-phase contact angle of the hydrophobically modified gaseous oxidation silicon may range from 128 ° extremely
143°.The three-phase contact angle of the range can guarantee the interface for being predominantly located in oily phase and water phase of hydrophobically modified gaseous oxidation silicon
On, to form stable water-in-oil emulsion.
Any one or more in embodiments herein, in oil the Xiang Weiqi liquefaction and white oil.
In embodiments herein, the white oil may include 3# white oil and 5# white oil.
In embodiments herein, the water phase can be water or calcium chloride water.Optionally, the calcium chloride water
The concentration of solution is no more than 25wt%.
Present invention also provides the preparation methods of water-in-oil emulsion as described above, which comprises dredges described
The modified gaseous oxidation silicon of water is dispersed in the oily phase and stirs, and obtains hydrophobically modified gaseous oxidation silicon-oil dispersed system；By institute
It states water phase to be added in the hydrophobically modified gaseous oxidation silicon-oil dispersed system, ultrasonic emulsification is carried out after stirring to get the oil is arrived
Water-in type lotion.
In embodiments herein, the ultrasonic power of the ultrasonic emulsification can be 200W to 400W, and ultrasonic time can
Think 50s to 100s.
Present invention also provides a kind of oil base drilling fluid, the oil base drilling fluid includes water-in-oil type cream as described above
Liquid.
In embodiments herein, the oil base drilling fluid can be for without native phase oil base drilling fluid.
The application constructs a kind of water-in-oil emulsion, and hydrophobically modified gas phase oxygen using hydrophobically modified gaseous oxidation silicon
The presence of SiClx makes the water-in-oil emulsion have very excellent stability, places half a year at room temperature and does not break
Cream.In addition, rate of change in viscosity of the water-in-oil emulsion in -5 DEG C to 150 DEG C temperature ranges can illustrate this down to 11.15%
Water-in-oil emulsion has excellent wide warm area perseverance rheological property, can be applied to deep water and jelly using its oil base drilling fluid constructed
The drilling engineering of soil zone low temperature formation.
Other features and advantage will illustrate in the following description, also, partly become from specification
It obtains it is clear that being understood and implementing the application.Other advantages of the application can be by specification, claims
And scheme described in attached drawing is achieved and obtained.
Detailed description of the invention
Attached drawing is used to provide the understanding to technical scheme, and constitutes part of specification, with the application's
Embodiment is used to explain the technical solution of the application together, does not constitute the limitation to technical scheme.
Fig. 1 be the embodiment of the present application 1-5 preparation oily packet salt aqueous emulsion microscope photograph, wherein (a), (b), (c),
(d), (e) respectively corresponds the oily packet salt aqueous emulsion of the embodiment of the present application 1-5 preparation.
Specific embodiment
For the purposes, technical schemes and advantages of the application are more clearly understood, below in conjunction with attached drawing to the application
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
The modified gaseous oxidation silicon of methyl employed in following embodiment is bought from goldschmidt chemical corporation, model H20；Gas system
Oil is bought from Shell Co. Ltd, model 185V；Other raw materials and reagents are unless otherwise instructed ordinary commercial products.
Embodiment 1
The modified gaseous oxidation silicon of 0.5 parts by weight methyl (the three-phase contact angle of particle is 128 °) and 60 parts by weight are weighed respectively
Gas liquefaction；The modified gaseous oxidation silicon particle of methyl is added in gas liquefaction, the revolving speed of magnetic agitation is set as 600 revs/min, stirs
Mixing is dispersed in methyl modified gaseous oxidation silicon particle in gas liquefaction；Weighing 39.5 parts by weight concentration is 25wt%
Calcium chloride water, be added into the modified gaseous oxidation silicon particle-oil phase dispersion of methyl, continuation is with 600 revs/min
Revolving speed after magnetic stirring for 10 minutes ultrasound, ultrasonic power 200W, ultrasonic time is 100s to get water-in-oil emulsion is arrived.
Embodiment 2
The modified gaseous oxidation silicon of 1 parts by weight ethyl (the three-phase contact angle of particle is 143 °) and 70 parts by weight 3# are weighed respectively
White oil；The modified gaseous oxidation silicon particle of ethyl is added in 3# white oil, the revolving speed of magnetic agitation is set as 600 revs/min, stirs
It is dispersed in ethyl modified gaseous oxidation silicon particle in 3# white oil；Weighing 29.5 parts by weight concentration is 15wt%'s
Calcium chloride water is added into the modified gaseous oxidation silicon particle-oil phase dispersion of ethyl, continues with 600 revs/min
Revolving speed after magnetic stirring for 10 minutes ultrasound, ultrasonic power 200W, ultrasonic time are 100s to get water-in-oil emulsion is arrived.
Embodiment 3
The modified gaseous oxidation silicon of 1.5 parts by weight isopropyls (the three-phase contact angle of particle is 128 °) and 80 weight are weighed respectively
Part 5# white oil；The modified gaseous oxidation silicon particle of isopropyl is added in 5# white oil, sets the revolving speed of magnetic agitation as 600 revs/min
Clock, stirring make in the modified uniform 5# white oil of gaseous oxidation silicon particle of isopropyl for 10 minutes；Weighing 19.5 parts by weight concentration is
The calcium chloride water of 25wt% is added into the modified gaseous oxidation silicon particle-oil phase dispersion of isopropyl, continuation with
600 revs/min of revolving speed after magnetic stirring for 10 minutes ultrasound, ultrasonic power 400W, ultrasonic time are that 50s wraps to get to oil
Water emulsion.
Embodiment 4
The modified gaseous oxidation silicon of 1 parts by weight methyl (the three-phase contact angle of particle is 128 °) and 89.5 parts by weight are weighed respectively
Gas liquefaction；The modified gaseous oxidation silicon particle of methyl is added in gas liquefaction, the revolving speed of magnetic agitation is set as 600 revs/min, stirs
Mixing is dispersed in methyl modified gaseous oxidation silicon particle in gas liquefaction；Weighing 10 parts by weight concentration is 25wt%'s
Calcium chloride water is added into the modified gaseous oxidation silicon particle-oil phase dispersion of methyl, continues with 600 revs/min
Revolving speed after magnetic stirring for 10 minutes ultrasound, ultrasonic power 200W, ultrasonic time are 100s to get water-in-oil emulsion is arrived.
Embodiment 5
The modified gaseous oxidation silicon of 0.5 parts by weight methyl (the three-phase contact angle of particle is 128 °) and 80 parts by weight are weighed respectively
Gas liquefaction；The modified gaseous oxidation silicon particle of methyl is added in gas liquefaction, the revolving speed of magnetic agitation is set as 600 revs/min, stirs
Mixing is dispersed in methyl modified gaseous oxidation silicon particle in gas liquefaction；19.5 parts by weight water are weighed, are added into
In the modified gaseous oxidation silicon particle-oil phase dispersion of methyl, continue with 600 revs/min of revolving speed after magnetic stirring for 10 minutes
Ultrasound, ultrasonic power 200W, ultrasonic time be 100s to get arrive water-in-oil emulsion.
Performance test
Emulsion droplets partial size, the standing stability of the water-in-oil emulsion of embodiment 1-5 preparation are investigated using optical microscopy
And its stream of the water-in-oil emulsion of embodiment 1-5 preparation in -5 DEG C to 150 DEG C temperature ranges is investigated using Haake torque rheometer
It is denaturalized energy.
Fig. 1 is the microscope photograph of the oily packet salt aqueous emulsion of embodiment 1-5 preparation, it can be seen that embodiment 1-5 preparation
The emulsion droplets average grain diameter of five kinds of emulsion systems is in 310 μm to 10 μ ms.Moreover, at room temperature by five kinds of emulsion systems
It places 6 months, average grain diameter is basically unchanged, and it is good poly- and steady to illustrate that the emulsion system of the embodiment of the present application preparation has
It is qualitative.
Rheological property parameter of the emulsion system of 1 the embodiment of the present application of table preparation at -5 DEG C and 150 DEG C.
Table 1
Note: apparent viscous at rate of change in viscosity=(apparent viscosity-at -150 DEG C of apparent viscosity at -5 DEG C)/- 5 DEG C
Degree, stress rate=rate of change in viscosity.
As can be seen that the emulsion system of the embodiment of the present application all has good rheological characteristic at -5 DEG C and 150 DEG C, in temperature
Degree from -5 DEG C be increased to 150 DEG C during, the viscosity and stress rate (3r/min) of emulsion system are below 40%, do not send out
Raw low temperature seriously thickens phenomena such as being even gelled, and can meet the technical requirements of the drilling well of deep-sea and tundra low temperature formation.
Although embodiment disclosed by the application is as above, the content only for ease of understanding the application and use
Embodiment is not limited to the application.Technical staff in any the application fields, is taken off not departing from the application
Under the premise of the spirit and scope of dew, any modification and variation, but the application can be carried out in the form and details of implementation
Scope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. a kind of water-in-oil emulsion, which is characterized in that the water-in-oil emulsion includes oily phase, water phase and hydrophobically modified gas phase
Silica, and be mutually in terms of 100 parts by weight with the total content of the water phase by the oil, the content of the oil phase is 60 parts by weight
To 90 parts by weight, the content of the water phase is 10 to 40 parts by weight, and the content of the hydrophobically modified gaseous oxidation silicon is 0.5 weight
Part to 1.5 parts by weight.
2. water-in-oil emulsion according to claim 1, wherein the hydrophobically modified gaseous oxidation silicon is modified selected from methyl
The modified gaseous oxidation silicon of gaseous oxidation silicon, ethyl and isopropyl are modified any one or more in gaseous oxidation silicon.
3. water-in-oil emulsion according to claim 2, wherein the hydrophobically modified gaseous oxidation silicon is methyl modified gas
Phase oxidation silicon.
4. water-in-oil emulsion according to any one of claim 1-3, wherein the hydrophobically modified gaseous oxidation silicon
It is 128 ° to 143 ° that three-phase, which contacts angular region,.
5. water-in-oil emulsion according to claim 1, wherein the water phase is water or calcium chloride water.
6. water-in-oil emulsion according to claim 1, wherein any one in oil the Xiang Weiqi liquefaction and white oil
Or it is a variety of.
7. the preparation method of water-in-oil emulsion according to claim 1 to 6, which is characterized in that the method
Include: that the hydrophobically modified gaseous oxidation silicon is dispersed in the oily phase and is stirred, obtains hydrophobically modified gaseous oxidation silicon-oil
Dispersion；The water phase is added in the hydrophobically modified gaseous oxidation silicon-oil dispersed system, ultrasound cream is carried out after stirring
Change to get the water-in-oil emulsion is arrived.
8. according to the method described in claim 7, wherein, the ultrasonic power of the ultrasonic emulsification is 200W to 400W, when ultrasonic
Between be 50s to 100s.
9. a kind of oil base drilling fluid, which is characterized in that the oil base drilling fluid includes according to claim 1 described in any one of -6
Water-in-oil emulsion.
10. oil base drilling fluid according to claim 9, wherein the oil base drilling fluid is without native phase oil base drilling fluid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910335958.9A CN110003865A (en) | 2019-04-24 | 2019-04-24 | Water-in-oil emulsion and preparation method thereof and oil base drilling fluid |
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| CN201910335958.9A CN110003865A (en) | 2019-04-24 | 2019-04-24 | Water-in-oil emulsion and preparation method thereof and oil base drilling fluid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110804424A (en) * | 2019-10-11 | 2020-02-18 | 中国石油大学(华东) | Water-based clay-phase-free drilling fluid and application thereof in drilling of polar frozen earth formation |
| CN114032078A (en) * | 2021-11-26 | 2022-02-11 | 中海石油深海开发有限公司 | Water-in-oil drilling fluid emulsion and preparation method and application thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110804424A (en) * | 2019-10-11 | 2020-02-18 | 中国石油大学(华东) | Water-based clay-phase-free drilling fluid and application thereof in drilling of polar frozen earth formation |
| CN110804424B (en) * | 2019-10-11 | 2021-10-22 | 中国石油大学(华东) | Water-based clay-phase-free drilling fluid and application thereof in drilling of polar frozen earth formation |
| CN114032078A (en) * | 2021-11-26 | 2022-02-11 | 中海石油深海开发有限公司 | Water-in-oil drilling fluid emulsion and preparation method and application thereof |
| CN114032078B (en) * | 2021-11-26 | 2023-06-20 | 中海石油深海开发有限公司 | Water-in-oil drilling fluid emulsion and preparation method and application thereof |
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Application publication date: 20190712 |