CN104559955B - It is a kind of for bituminous composition of drilling fluid and preparation method thereof - Google Patents
It is a kind of for bituminous composition of drilling fluid and preparation method thereof Download PDFInfo
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- CN104559955B CN104559955B CN201310496045.8A CN201310496045A CN104559955B CN 104559955 B CN104559955 B CN 104559955B CN 201310496045 A CN201310496045 A CN 201310496045A CN 104559955 B CN104559955 B CN 104559955B
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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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Abstract
The invention discloses a kind of for bituminous composition of drilling fluid and preparation method thereof, the bituminous composition is using high softening point bitumen as nuclear phase, outer layer covers high softening-point coal tar pitch, the bituminous composition by mass percentage, including following component：High softening point bitumen 20%~50%, high softening-point coal tar pitch 50%~80%；The softening point difference of wherein high softening point bitumen and high softening-point coal tar pitch is 15 ~ 40 DEG C.Preparation method is as follows：The coal tar pitch of melting is added in oxidation reactor, it is passed through air and carries out air blowing oxidation reaction, after reaction terminates, oxidation material is sprayed onto high softening point bitumen powder surface and forms parcel, cooling obtains bituminous composition, it is then added in disintegrating apparatus and carries out co-grinding, that is, prepares Asphalt composition particle.Bituminous composition of the present invention has higher softening point, can persistently be played a role under the conditions of the drillng operation of wide temperature range.
Description
Technical field
The invention belongs to petroleum drilling technology field, and in particular to a kind of bituminous composition and its preparation for drilling fluid
Method.
Background technology
Asphalt product is one of important additive for drilling fluid, with good anti-collapse, lubrication, emulsification, filtrate reducing and height
The comprehensive effectivenesses such as temperature stabilization.Asphalt product typically contains water insoluble pitch particle, and has certain softening point.Work as well
When intraocular has sufficiently high temperature and pressure, pitch particle softening transform, and being squeezed into borehole wall microcrack, prevent drilling fluid and
Filtrate is permeated from microcrack, and stratum is effectively blocked together with mud cake.Bitumen is that oil drilling is extremely effective anti-collapse
Agent and oil layer protective agent.With the development of Petroleum finance, drilling depth is constantly deepened, and drilling strata is more and more complicated,
The quantity of the special wells such as directional well, horizontal well gradually increases.This make drilling engineering to drilling fluid asphalt product and its
System proposes higher requirement.The high softening point bitumen that high-temperature behavior is good, have good seal-off effect and filtration reduction is developed (to refer to
Softening point is more than 100 DEG C, especially more than 120 DEG C), the need for meeting oil drilling engineering, with highly important
Meaning.
The preparation technology of high softening point bitumen typically use solvent deasphalting or air blowing oxidation technique, CN102464989A,
CN102876344A, CN102464988A and CN102382696A etc. disclose several high softening point bitumens being used in drilling fluid
Or the preparation method of pitch particle, asphalt softening point is typically more than 120 DEG C, up to 250 DEG C.
CN102952526A discloses a kind of high softening-point emulsified asphalt water-base drilling fluid inorganic agent and preparation method thereof, institute
State additive for drilling fluid including 40~70% softening points for 150~240 DEG C pitch, 35~50 weight % water, 0.02~2% auxiliary agent,
0.05~5 % emulsifying agents, 0.01~1% stabilizer, additive for drilling fluid has good HTHP filtrate reducing function, fits
Deep-well and ultra-deep well drilling for HTHP.
US7220348B1, CN102876344 A, CN102876344 A and CN102732280A also disclose several high soft
Change the production method of point pitch, asphaltic products softening point is all at 250 DEG C with but mainly for the production of carbon fiber product, fire proofed wood
Expect binding agent and spinning field.
It is single due to constituting when existing high softening point bitumen is among applied to drilling fluid system, there is viscoelastic scope
It is smaller, the problems such as temperature in use scope is narrower, it is difficult to persistently be played a role in underground.CN1046176A discloses a kind of containing pre-
About 2 parts of high softening-point pitch of mixing, about 1 part of low softening point pitch, about 1 part of causticization lignite and a kind of strongly lipophilic are non-
The water-based drilling muds additive of ionic surface active agent.This compositions of additives can be in the temperature and pressure of wide scope
Effectively, but simple mechanical mixture is difficult the effective action effect for playing different softening point pitch.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of for bituminous composition of drilling fluid and preparation method thereof.
Bituminous composition of the present invention has higher softening point, and work can be persistently played under the conditions of the drillng operation of wide temperature range
With.
The present invention is used for the bituminous composition of drilling fluid, using high softening point bitumen as nuclear phase, outer layer covers high softening-point coal
Pitch, the bituminous composition by mass percentage, including following component：High softening point bitumen 20%~50%, high softening-point coal
Pitch 50%~80%；The softening point difference of wherein high softening point bitumen and high softening-point coal tar pitch is 15 ~ 40 DEG C.
Bituminous composition of the present invention can also need to add water-soluble fibre, sulfonated lignite, sulphonated phenol according to actual product
Urea formaldehyde, lauryl sodium sulfate, DTAC, hexadecyltrimethylammonium chloride, octadecyl front three
Ammonium chloride, water-soluble resin, polyvinylpyrrolidone（PVP）, graphite, montmorillonite, one kind in the additive such as bentonite or
Several, additive addition accounts for the 5% ~ 20% of bituminous composition gross weight（Bituminous composition each component sum is 100%）；Wherein
Water-soluble fibre is the one or more in carboxymethyl cellulose (CMC), vinal, WATER-SOLUBLE PVA FIBER；Sulfonation is brown
Coal and sulfonated phenol formaldehyde resin can use commercial goods, can also be prepared by this area conventional method；Water-soluble resin is water-soluble
One or more in property acrylic resin, water soluble alkyd resin, water-soluble polyester resin；Graphite, montmorillonite, bentonite are
Solid powdery.
In bituminous composition of the present invention, the softening point of described high softening point bitumen is 140~260 DEG C, preferably 150~
240℃；High softening point bitumen is solid, powdery, preferably average grain diameter≤100 μm, average grain diameter≤60 μm.
In bituminous composition of the present invention, described high softening point bitumen can use commercially available prod, can also be according to ability
The combination of domain routine techniques preparation, such as reduced pressure distillation process, solvent de-asphalting process, air blowing oxidation technique, or several techniques.
In bituminous composition of the present invention, the softening point of described high softening-point coal tar pitch is 100 ~ 180 DEG C, preferably 120 ~
150℃。
Preparation method of the present invention for the bituminous composition of drilling fluid, including following content：The coal tar pitch of melting is added
Enter into oxidation reactor, be passed through air and carry out air blowing oxidation reaction, after reaction terminates, oxidation material is sprayed onto high softening-point
Asphalt powder surface forms parcel, and cooling obtains bituminous composition, bituminous composition is added in disintegrating apparatus and carries out mixed powder
It is broken, that is, prepare Asphalt composition particle.
In the inventive method, high softening point bitumen powder is preferably dry-mixed with solid dispersion progress, and wherein asphalt powder is with disperseing
The mass ratio of agent is 10:1~20:1, described solid dispersion be one kind in graphite, montmorillonite, bentonite or hydrotalcite or
It is several.
In the inventive method, described oxidation reactor is batch oxidation kettle or continous way oxidizing tower.Oxidation reaction bar
Part is：Gas flow is 0.05~1m3·kg-1·h-1, preferably 0.1~0.8m3·kg-1·h-1, more preferably 0.4 ~ 0.6 m3·
kg-1·h-1.Oxidizing temperature is 220~300 DEG C, and preferably 240 ~ 280 DEG C, oxidization time is 5~20 hours, and preferably 8~15 is small
When.
In the inventive method, accelerator is preferably added in air blowing process, accelerator is hydrogen peroxide, potassium chlorate, height
One or more in potassium manganate or iron chloride, accelerator addition is the 0.1wt%~1.0wt% for accounting for coal tar pitch quality.
In the inventive method, described coal tar pitch is the coal tar pitch after middle temperature or high temperature distillation, and softening point is 50~95
℃。
In the inventive method, described sprinkling process can use the sprinkling for being connected with atomizer with certain pressure
Equipment, pressure and jet size are adjusted according to actual conditions, it is ensured that can spray oxidation material.
In the inventive method, described disintegrating apparatus can be that high energy shear milling machine, colloid mill, ball mill pulverizer etc. are stirred
Stirring-type disintegrating apparatus is mixed or hits, grinding time is 10~60s, and it is no more than 20 DEG C to crush temperature, and bituminous composition is preferred
Low temperature brittleness processing is carried out before crushing, low temperature brittleness treatment conditions are：Temperature is 0~-60 DEG C, is preferably -10~-30 DEG C,
Time is 2~48 hours, preferably 2~10 hours.
Coating agent is preferably added in described preparation process and/or solid dispersion is well mixed with bituminous composition, can
To be added in crushing process, it can also be added after crushing process；Wherein solid dispersion is graphite, montmorillonite and swelling
One or more in soil, addition accounts for the 0.01%~20% of bituminous composition weight, preferably 5%~10%；Coating agent is water-soluble
Property acrylic resin, water soluble alkyd resin, water-soluble polyester resin or polyvinylpyrrolidone（PVP）One or more,
Addition accounts for the 0.01%~5.0% of bituminous composition weight, preferably 0.5%~1.0%.
The average grain diameter of the Asphalt composition particle of the present invention is 50~130 μm, preferably 60~100 μm.
Asphalt composition particle of the present invention is in terms of oil drilling, the particularly deep layer wellbore fluid of wide temperature
Applied in system.
Compared with prior art, the advantage of the invention is that：Bituminous composition of the present invention is using two kinds of softening points, two kinds of property
The pitch of matter is combined, and bituminous composition outer layer is coal tar pitch, and coal tar pitch fragility is big, is easily crushed under normal temperature, with borehole wall mud page
The adhesiveness of rock is good；Bituminous composition of the present invention is compared to the high low softening point asphalt of direct mechanical mixture, high low softening point drip
Combine more closely, in temperature change, can more effectively coordinate, " outer layer-centre junction-kernel " structure can between green grass or young crops
Preferably adapt to the consecutive variations of well temperature in drilling process；When well temperature is relatively low, the relatively low outer layer coal tar pitch of softening point softens, and plays
The effect of closure, internal high softening point bitumen, can be with improvement of mud cake as the particle filled composite of drilling fluid mud cake；Well temperature rise
Gao Shi, the relatively low outer layer coal tar pitch of softening point first softens or even trickling is adsorbed onto on clay particle, plays scattered and colloid protecting action, has
Beneficial to fine and close mud cake is formed, internal high softening point bitumen plays the effect of closure in the softening transform close near softening point.
The inside and the pitch of outer layer that bituminous composition of the present invention can according to the actual needs to bituminous composition carry out softening point
Modulation, can persistently play a role in the range of wider drilling depth.
Embodiment
The present invention will be further described by embodiment below, but it is not thereby limiting the invention, it is therein
Percentage composition is weight/mass percentage composition.The method of testing of softening point is carried out according to GB/T4507 methods.High temperature and high pre ssure filtration is pressed
SY/T5621 methods are determined.
Embodiment 1
2g potassium permanganate is added to the coal tar pitch of 350g meltings（Softening point is 60 DEG C）In be well mixed, be then transferred to oxygen
Change in kettle, carry out air blowing oxidation, after reaction terminates, oxidation material is sprayed to 100g high softening point bitumen powder surface while hot（It is soft
It is 150 DEG C to change point, and average grain diameter is 70 μm）, room temperature is subsequently cooled to, bituminous composition, oxidizing condition and product property is obtained
It is shown in Table 1.
By bituminous compositions of the 100g through low temperature brittleness（Low temperature brittleness condition：- 25 DEG C of temperature, 8 hours time）, 16g stones
Ink and 4g bentonites, are added in high speed disintegrator, incorporation time 5s, grinding time 25s, add 1.5g water-soluble acrylic
Resin, remixes 4s, obtains Asphalt composition particle, is designated as A1, and its average grain diameter is 100 μm.
Embodiment 2
5g graphite and 5g bentonites are well mixed, are added to the coal tar pitch of 300g meltings（Softening point is 70 DEG C）In, mixing
Uniformly, then it is transferred in stills for air blowing, carries out air blowing oxidation, after reaction terminates, oxidation material is sprayed to 100g height while hot soft
Change point asphalt powder surface（Softening point is 185 DEG C, and average grain diameter is 50 μm）, room temperature is subsequently cooled to, bituminous composition, oxygen is obtained
Change condition and product property are shown in Table 1.
By bituminous compositions of the 100g through low temperature brittleness（Low temperature brittleness condition：- 10 DEG C of temperature, 5 hours time）, 5g graphite
With 5g bentonites, it is added in high speed disintegrator, incorporation time 5s, grinding time 20s, adds 2g water-soluble acrylic tree
Fat, remixes 4s, obtains Asphalt composition particle, is designated as A2, and its average grain diameter is 80 μm.
Embodiment 3
The coal tar pitch of 150g meltings（Softening point is 90 DEG C）It is added in stills for air blowing, carries out air blowing oxidation, after reaction terminates,
Oxidation material is sprayed to 100g high softening point bitumen powder surface while hot（Softening point is 200 DEG C, and average grain diameter is 30 μm）, then
Room temperature is cooled to, bituminous composition is obtained, oxidizing condition and product property are shown in Table 1.
By 100g bituminous compositions, 3g graphite, 6g montmorillonites and 0.5g cetyl trimethylammonium bromides, it is added at a high speed
In pulverizer, incorporation time 5s, grinding time 30s obtain Asphalt composition particle, are designated as A3, and its average grain diameter is 50 μm.
Comparative example 1
By the 100g pitch powder handled through low temperature brittleness（Softening point is 120 DEG C, and average grain diameter is 80 μm）, 16g stones
Ink and 4g bentonites, are added in high speed disintegrator, incorporation time 5s, add 1.5g water soluble acrylic resin, remix
4s, obtains Asphalt composition particle, is designated as A4.
Comparative example 2
By the 100g high softening point bitumen powder handled through low temperature brittleness（Softening point is 185 DEG C, and average grain diameter is 60 μm）、
5g graphite and 5g bentonites, are added in high speed disintegrator, incorporation time 5s, add 2g water soluble acrylic resin, then mix
4s is closed, Asphalt composition particle is obtained, is designated as A5.
Comparative example 3
By the pitch that 50g softening point is 155 DEG C（Average grain diameter is 70 μm）, 75g softening points be 120 DEG C of coal tar pitch
（Average grain diameter is 50 μm）, 4g graphite, 7g montmorillonites and 0.6g cetyl trimethylammonium bromides, be added to high speed disintegrator
In, incorporation time 5s obtains Asphalt composition particle, is designated as A6.
Comparative example 4
By the pitch that 50g softening point is 185 DEG C（Average grain diameter is 40 μm）, 50g softening points be 160 DEG C of coal tar pitch
（Average grain diameter is 50 μm）5g graphite, 5g montmorillonites and 1g cetyl trimethylammonium bromides, are added in high speed disintegrator, mix
Conjunction time 5s, obtains Asphalt composition particle, is designated as A7.
The bituminous composition preparation condition of table 1 and product property.
The Asphalt composition particle obtained in above example is added to the base slurry prepared, Asphalt composition particle adds
Enter the percentages that amount is starched quality by base, the leak-off after determining different temperatures aging respectively under the conditions of test pressure 3.45MPa
Amount, concrete outcome is shown in Table 2.Wherein base slurry preparation method is as follows：2.75g natrium carbonicum calcinatums are added in 1000mL water, 60g is added
Calcium bentonite, high-speed stirred is conserved 24 hours for 20 minutes at room temperature, obtains 6% fresh water-based slurry.
Filter loss after the Asphalt composition particle different temperatures aging of table 2.
Note：Temperature is Aging Temperature in table, and digestion time is 16 hours.
Claims (13)
1. a kind of bituminous composition for drilling fluid, it is characterised in that：Using high softening point bitumen as nuclear phase, outer layer covers height is soft
Change a point coal tar pitch, the bituminous composition by mass percentage, including following component：High softening point bitumen 20%~50% is high soft
Change point coal tar pitch 50%~80%；Wherein the softening point of high softening point bitumen is 140~260 DEG C, the softening of high softening-point coal tar pitch
Point is 100 ~ 180 DEG C；The softening point difference of high softening point bitumen and high softening-point coal tar pitch is 15 ~ 40 DEG C.
2. according to the bituminous composition described in claim 1, it is characterised in that：Described high softening point bitumen is solid, powdery,
Average grain diameter≤100 μm.
3. according to the bituminous composition described in claim 1, it is characterised in that：Water-soluble fibre, sulphur are added in bituminous composition
Change lignite, sulfonated phenol formaldehyde resin, lauryl sodium sulfate, DTAC, hexadecyltrimethylammonium chloride,
OTAC, water-soluble resin, polyvinylpyrrolidone, graphite, montmorillonite or bentonitic a kind of or several
Additive is planted, additive addition accounts for the 5% ~ 20% of bituminous composition gross weight；Wherein water-soluble fibre is selected from carboxymethyl cellulose
One or more in element, WATER-SOLUBLE PVA FIBER；Water-soluble resin is water soluble acrylic resin, water soluble alkyd resin, water
One or more in dissolubility polyester resin.
4. the preparation method of the bituminous composition described in a kind of claim 1, it is characterised in that including following content：By melting
Coal tar pitch is added in oxidation reactor, is passed through air and is carried out air blowing oxidation reaction, after reaction terminates, oxidation material is sprayed onto
High softening point bitumen powder surface forms parcel, and cooling obtains bituminous composition, is then added in disintegrating apparatus and carries out mixed powder
It is broken, that is, prepare Asphalt composition particle.
5. in accordance with the method for claim 4, it is characterised in that：High softening point bitumen powder and solid dispersion progress are dry-mixed,
Wherein the mass ratio of high softening point bitumen powder and solid dispersion is 10:1~20:1；Described solid dispersion is graphite, covers de-
One or more in soil, bentonite or hydrotalcite.
6. in accordance with the method for claim 4, it is characterised in that：Oxidation reaction condition is：Gas flow is 0.05~1m3·
kg-1·h-1, oxidizing temperature is 220~300 DEG C, and oxidization time is 5~20 hours.
7. in accordance with the method for claim 4, it is characterised in that：Accelerator is added in air blowing process, accelerator is
One or more in hydrogen peroxide, potassium chlorate, potassium permanganate or iron chloride, accelerator addition is to account for coal tar pitch quality
0.1wt%~1.0wt%.
8. in accordance with the method for claim 4, it is characterised in that：Described coal tar pitch is the coal after middle temperature or high temperature distillation
Pitch, softening point is 50~95 DEG C.
9. in accordance with the method for claim 4, it is characterised in that：Grinding time is 10~60s, and it is no more than 20 to crush temperature
℃。
10. in accordance with the method for claim 4, it is characterised in that：Bituminous composition carries out low temperature brittleness processing before crushing,
Low temperature brittleness treatment conditions are：Temperature is 0~-60 DEG C, and the time is 2~48 hours.
11. in accordance with the method for claim 4, it is characterised in that：Coating agent and/or solid are added in described preparation process
Dispersant is well mixed with bituminous composition；Wherein solid dispersion is the one or more in graphite, montmorillonite and bentonite,
Addition accounts for the 0.01%~20% of bituminous composition weight；Coating agent is water soluble acrylic resin, water soluble alkyd resin, water
The one or more of dissolubility polyester resin or polyvinylpyrrolidone, addition accounts for the 0.01%~5.0% of bituminous composition weight.
12. the Asphalt composition particle prepared by claim 4 ~ 11 either method, it is characterised in that：Asphalt composition particle
Average grain diameter is 50~130 μm.
13. the Asphalt composition particle described in claim 12 is applied in drilling fluid system.
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| CN201310496045.8A CN104559955B (en) | 2013-10-22 | 2013-10-22 | It is a kind of for bituminous composition of drilling fluid and preparation method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633937B (en) | 2015-11-02 | 2019-06-11 | 中国石油化工股份有限公司 | A kind of modified high softening point bitumen particle, preparation method and application |
| CN107325230A (en) * | 2017-06-30 | 2017-11-07 | 常州市瑞泰物资有限公司 | A kind of preparation method of drilling fluid coating agent |
| CA3228531A1 (en) * | 2021-09-08 | 2023-03-16 | Stacey Mckinney | Dispersion of coal tar pitch for coating graphitic materials and use in li-ion battery electrode production |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2120302A (en) * | 1982-05-20 | 1983-11-30 | John James Dyer | Medium for forming a pack in a bore hole |
| CN101092556A (en) * | 2006-06-23 | 2007-12-26 | 中国石油天然气股份有限公司 | Oil-soluble cationic broad-spectrum temporary plugging agent for drilling fluid |
| CN102516960A (en) * | 2011-10-17 | 2012-06-27 | 中国石油天然气股份有限公司 | Micro-suspension self-selection plugging and conditioning agent and application method thereof |
-
2013
- 2013-10-22 CN CN201310496045.8A patent/CN104559955B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2120302A (en) * | 1982-05-20 | 1983-11-30 | John James Dyer | Medium for forming a pack in a bore hole |
| CN101092556A (en) * | 2006-06-23 | 2007-12-26 | 中国石油天然气股份有限公司 | Oil-soluble cationic broad-spectrum temporary plugging agent for drilling fluid |
| CN102516960A (en) * | 2011-10-17 | 2012-06-27 | 中国石油天然气股份有限公司 | Micro-suspension self-selection plugging and conditioning agent and application method thereof |
Non-Patent Citations (1)
| Title |
|---|
| "煤沥青与石油沥青混合调制道路沥青的研究";曹东伟，等;《燃料化学学报》;20120615;第40卷(第6期);第680-684页 * |
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