CN105018048B - Drilling fluid anti-sloughing agent polymer-modified asphalt - Google Patents
Drilling fluid anti-sloughing agent polymer-modified asphalt Download PDFInfo
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- CN105018048B CN105018048B CN201510484148.1A CN201510484148A CN105018048B CN 105018048 B CN105018048 B CN 105018048B CN 201510484148 A CN201510484148 A CN 201510484148A CN 105018048 B CN105018048 B CN 105018048B
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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
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
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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
- C09K2208/10—Nanoparticle-containing well treatment fluids
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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)
- Compositions Of Macromolecular Compounds (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The present invention provides a kind of drilling fluid anti-sloughing agent polymer-modified asphalt, including the parts by weight of pitch 30 50；The parts by weight of deionized water 8 10；The parts by weight of modified-high polymer agent 5 20；The parts by weight of carbolineum 4 20；The parts by weight of Nano graphite powder 13；The parts by weight of polyglycol ether 13；The particle diameter of the Nano graphite powder is less than 50nm.Drilling fluid of the present invention is that static storage 48h softening points are unchanged with the beneficial effect of anti-sloughing agent polymer-modified asphalt, static storage 15 days, softening point reduces by 0.7 2.4 DEG C and has no that polymer forms emulsus layer or skinning on pitch top, storage stability is good, has higher marketing use value.
Description
Technical field
The invention belongs to petroleum drilling fluid anti-sloughing agent field, more particularly, to a kind of petroleum drilling fluid anti-sloughing agent macromolecule
Modified pitch.
Background technology
Drilling fluid plays a part of to maintain stabilizing mud properties and keeps wellbore stability with anti-sloughing agent in drilling fluid.At present
Anti-caving agent for drilling fluid is only classified by its chemical composition, including inorganic salts, polymerization species, potassium humate and its and resin
Cross-linking agent etc., low molecule organic matter class and pitch class.Wherein, pitch class typically contains pitch particle not soluble in water, and
There is certain softening point.When having sufficiently high temperature and pressure in well, they are squeezed into borehole wall fine fisssure with regard to softening transform
In gap, stratum is effectively blocked together with mud cake.At present, the asphalt product used in drilling engineering include bitumen,
Modified pitch, sulfonated gilsonite and emulsified asphalt etc..Common Evaluating Method has fluorescence, disturbs geological logging, is not suitable for probing
Well uses；And absorption affinity of the conventional pitch class anti-sloughing agent in rock of borehole is not ideal enough, closure anti sloughing effectiveness needs into one
Step improves.
Modified pitch is the outer-penetrating agents such as admixture rubber, resin, high molecular polymer, levigate rubber powder or other fillers
(modifying agent), or take to measures such as pitch mild oxidation processing, the performance of pitch or asphalt is improved and be made
Asphalt binder.Its mechanism of modified pitch has two kinds, first, changing pitch chemical composition, second, being uniformly distributed in modifying agent
Certain spacial framework is formed in pitch.Polymer-modified asphalt is dripped by the modified of modifying agent of high molecular polymer
It is blue or green.
Macromolecule modifier particle is easily assembled when existing polymer-modified asphalt is applied to anti-caving agent for drilling fluid, causes
Anti-caving agent for drilling fluid stability is poor, should not store.
The content of the invention
It is an object of the invention to provide a kind of stability height, the macromolecule modified drip of drilling fluid anti-sloughing agent of storage time length
It is blue or green.
The technical scheme is that：
Drilling fluid anti-sloughing agent polymer-modified asphalt, including pitch 30-50 parts by weight；Deionized water 8-10 parts by weight；
Modified-high polymer agent 5-20 parts by weight；Carbolineum 4-20 parts by weight；Nano graphite powder 1-3 parts by weight；Polyglycol ether 1-3 weight
Part；The particle diameter of the Nano graphite powder is less than 50nm.
Researcher's discovery of the present invention with addition Nano graphite powder in anti-sloughing agent polymer-modified asphalt and gathers in drilling fluid
The storage stability of polymer-modified asphalt can be greatly improved in glycol ether.
The particle size range of the graphite powder is：Particle diameter≤20nm accounts for 70-80%；20nm particle diameters≤50nm accounts for 20-30%.
The particle size range of the graphite powder is：Particle diameter≤10nm accounts for 0-10%；20nm≤particle diameter≤50nm accounts for 60-80%；
20nm≤particle diameter≤50nm accounts for 20-30%.
Degree of scatter of the macromolecule modifier in pitch can be improved using the Nano graphite powder of above-mentioned particle size range, prevented
Only high polymer particle agglomeration, so as to improve the stability of drilling fluid anti-sloughing agent polymer-modified asphalt.
The drilling fluid also includes peroxide diisopropylbenzene (DIPB) 1-3 parts by weight with anti-sloughing agent polymer-modified asphalt；Paraffin oil 5-
10 parts by weight；The parts by weight of silica 1-5.
The modified-high polymer agent includes sulfonated humic acid 0.5-5 parts by weight and high molecular polymer 25-45.5 parts by weight；
The high molecular polymer include styrene, acrylonitrile, methacrylonitrile, acrylic acid, butadiene, one kind in isoprene or
It is several.
Sulfonated humic acid is added, sulfide linkage or polysulfide bond are introduced in polymer-modified asphalt, forms polymer-drip
Blue or green scion grafting thing；And sulfonated humic acid forms hydrogen bond with the active hydrogen in the acid amides or amine in pitch, further increases brill
The stability of well liquid polymer-modified asphalt.
The softening point of the pitch is 140-200 DEG C, and quinoline does not melt thing content≤0.2%.
Storage stability can further be improved using the pitch of high softening-point, and the pitch of high softening-point can adapt to
High temperature deep well stratum, especially depth are more than 5000m well.
A kind of drilling fluid preparation method of anti-sloughing agent polymer-modified asphalt, comprises the following steps：
(1) by the deionized water after weighing, modified-high polymer agent, carbolineum, Nano graphite powder, sulfonated humic acid and poly- second two
Alcohol ether is well mixed to obtain mixture；
(2) 30-50% pitch is heated to 170-200 DEG C, the mixture added obtained by step (1), insulation
And after stirring 0.5-1h, 145-165 DEG C is cooled to after adding 50-70% pitch, insulation continues to stir 4-8h acquisition drilling fluids
With anti-sloughing agent polymer-modified asphalt, the stir speed (S.S.) is 3000r/min.
Pitch mixing temperature is too high easily to aggravate the aging of modified pitch, but also can aggravate the aggregation of high polymer particle
Degree, it is unfavorable for the raising of stability.Pitch is divided into two parts and mixed with mixture by the present invention, reduces mixing
Temperature, avoid ageing of asphalt and high polymer particle aggregation, further increase stability.
A kind of drilling fluid preparation method of anti-sloughing agent polymer-modified asphalt, comprises the following steps：
(1) by the deionized water after weighing, modified-high polymer agent, carbolineum, Nano graphite powder, sulfonated humic acid, poly- second two
Alcohol ether, peroxide diisopropylbenzene (DIPB), paraffin oil and silica are well mixed to obtain mixture；
(2) 30-50% pitch is heated to 170-200 DEG C, the mixture added obtained by step (1), insulation
And after stirring 0.5-1h, 145-165 DEG C is cooled to after adding 50-70% pitch, insulation continues to stir 4-8h acquisition drilling fluids
With anti-sloughing agent polymer-modified asphalt, the stir speed (S.S.) is 3000r/min.
The present invention has the advantages and positive effects of：Drilling fluid of the present invention anti-sloughing agent polymer-modified asphalt is static
It is unchanged to store 48h softening points, static storage 15 days, softening point reduces 0.7-2.4 DEG C and has no polymer in pitch top shape
Into emulsus layer or skinning, storage stability is good, has higher marketing use value.
Embodiment
Embodiment 1
(1) 3 parts of Nano graphite powder, polyglycol ether 1 that 8 parts of deionized water, 20 parts of carbolineum, particle diameter are less than 50nm are weighed
Part, 5 parts of sulfonated humic acid and 30 parts of styrene, 15.5 parts of acrylonitrile, it is well mixed and obtains mixture；
(2) 25 parts of pitches are heated to 170-200 DEG C, the mixture added obtained by step (1), be incubated and
After stirring 1h under conditions of 3000r/min, 145 DEG C are cooled to after adding 25 parts of pitch, insulation continues the bar in 3000r/min
8h is stirred under part and obtains drilling fluid anti-sloughing agent polymer-modified asphalt.
The softening point of the drilling fluid anti-sloughing agent polymer-modified asphalt is 198 DEG C；Static storage 48h softening points are without change
Change, static storage 15 days, softening point reduces by 0.7 DEG C and has no that polymer forms emulsus layer or skinning on pitch top.
Embodiment 2
(1) 3 parts of Nano graphite powder, polyglycol ether 3 that 10 parts of deionized water, 4 parts of carbolineum, particle diameter are less than 50nm are weighed
Part, 0.5 part of sulfonated humic acid and 30 parts of styrene, 15.5 parts of methacrylonitrile, it is well mixed and obtains mixture, wherein, nanometer
The particle size range of graphite powder is：Particle diameter≤20nm accounts for 70-80%；20nm particle diameters≤50nm accounts for 20-30%；
(2) 15 parts of pitches are heated to 170-200 DEG C, the mixture added obtained by step (1), be incubated and
After stirring 1h under conditions of 3000r/min, 165 DEG C are cooled to after adding 35 parts of pitch, insulation continues the bar in 3000r/min
8h is stirred under part and obtains drilling fluid anti-sloughing agent polymer-modified asphalt.
The softening point of the drilling fluid anti-sloughing agent polymer-modified asphalt is 168 DEG C；Static storage 48h softening points are without change
Change, static storage 15 days, softening point reduces by 0.9 DEG C and has no that polymer forms emulsus layer or skinning on pitch top.
Embodiment 3
(1) 2 parts of Nano graphite powder, polyglycol ether 2 that 9 parts of deionized water, 10 parts of carbolineum, particle diameter are less than 50nm are weighed
45 parts of part, 4 parts of sulfonated humic acid and styrene, it is well mixed and obtains mixture, wherein, the particle size range of Nano graphite powder is：
Particle diameter≤10nm accounts for 0-10%；20nm≤particle diameter≤50nm accounts for 60-80%；20nm≤particle diameter≤50nm accounts for 20-30%；
(2) 17.5 parts of pitches are heated to 170-200 DEG C, the mixture added obtained by step (1), be incubated and
After stirring 1h under conditions of 3000r/min, 150 DEG C are cooled to after adding 28 parts of pitch, insulation continues the bar in 3000r/min
8h is stirred under part and obtains drilling fluid anti-sloughing agent polymer-modified asphalt.
The softening point of the drilling fluid anti-sloughing agent polymer-modified asphalt is 200 DEG C；Static storage 48h softening points are without change
Change, static storage 15 days, softening point reduces by 2.4 DEG C and has no that polymer forms emulsus layer or skinning on pitch top.
Embodiment 4
(1) 2 parts of Nano graphite powder, polyglycol ether 2 that 8 parts of deionized water, 15 parts of carbolineum, particle diameter are less than 50nm are weighed
Part, 3 parts of sulfonated humic acid and 30 parts of styrene, 5 parts of acrylic acid, 1.5 parts of butadiene, 4 parts of isoprene, are mixed
Compound, wherein, the particle size range of Nano graphite powder is：Particle diameter≤10nm accounts for 0-10%；20nm≤particle diameter≤50nm accounts for 60-
80%；20nm≤particle diameter≤50nm accounts for 20-30%；
(2) 25 parts of pitches are heated to 170-200 DEG C, the mixture added obtained by step (1), be incubated and
After stirring 1h under conditions of 3000r/min, 145 DEG C are cooled to after adding 25 parts of pitch, insulation continues the bar in 3000r/min
8h is stirred under part and obtains drilling fluid anti-sloughing agent polymer-modified asphalt.
The softening point of the drilling fluid anti-sloughing agent polymer-modified asphalt is 179 DEG C；Static storage 48h softening points are without change
Change, static storage 15 days, softening point reduces by 1.8 DEG C and has no that polymer forms emulsus layer or skinning on pitch top.
Embodiments of the invention are described in detail above, but the content is only presently preferred embodiments of the present invention,
It is not to be regarded as the practical range for limiting the present invention.Any changes and modifications in accordance with the scope of the present application,
All should still it belong within the patent covering scope of the present invention.
Claims (3)
1. drilling fluid anti-sloughing agent polymer-modified asphalt, it is characterised in that：Including pitch 30-50 parts by weight；Deionized water 8-
10 parts by weight；Modified-high polymer agent 5-20 parts by weight；Carbolineum 4-20 parts by weight；Nano graphite powder 1-3 parts by weight；Polyglycol ether
1-3 parts by weight；The particle diameter of the Nano graphite powder is less than 50nm, and the particle size range of the graphite powder is：Particle diameter≤20nm accounts for 70-
80%；20nm ＜ particle diameters≤50nm accounts for 20-30%；The modified-high polymer agent is sulfonated humic acid 0.5-5 parts by weight and high score
Sub- polymer 25-45.5 parts by weight；The high molecular polymer is selected from styrene, acrylonitrile, methacrylonitrile, acrylic acid, fourth
One or more of monomeric units formed in diene, isoprene；The softening point of the pitch is 140-200 DEG C, and quinoline is not
Melt thing content≤0.2%；
The drilling fluid is prepared with anti-couch agent polymer-modified asphalt by following methods, is comprised the following steps：
(1) by the deionized water after weighing, high molecular polymer, carbolineum, Nano graphite powder, sulfonated humic acid and polyglycol ether
It is well mixed to obtain mixture；
(2) 50-70% pitch is heated to 170-200 DEG C, the mixture added obtained by step (1), is incubated and stirs
After mixing 0.5-1h, 145-165 DEG C is cooled to after adding 30-50% pitch, insulation continues to stir 4-8h and obtain drilling fluid and use to prevent
Collapse agent polymer-modified asphalt, and the stir speed (S.S.) is 3000r/min；
Drilling fluid anti-sloughing agent polymer-modified asphalt, static storage 48h softening points are unchanged, static storage 15 days, soft
Changing point reduces 0.7-2.4 DEG C and has no that polymer forms emulsus layer or skinning on pitch top.
2. drilling fluid according to claim 1 anti-sloughing agent polymer-modified asphalt, it is characterised in that：The drilling fluid is used
Anti-sloughing agent polymer-modified asphalt also includes peroxide diisopropylbenzene (DIPB) 1-3 parts by weight；Paraffin oil 5-10 parts by weight；Silica 1-5
Parts by weight.
A kind of 3. preparation method of the drilling fluid anti-sloughing agent polymer-modified asphalt described in claim 2, it is characterised in that：Bag
Include following steps：
(1) by the deionized water after weighing, high molecular polymer, carbolineum, Nano graphite powder, sulfonated humic acid, polyglycol ether,
Peroxide diisopropylbenzene (DIPB), paraffin oil and silica are well mixed to obtain mixture；
(2) 50-70% pitch is heated to 170-200 DEG C, the mixture added obtained by step (1), is incubated and stirs
After mixing 0.5-1h, 145-165 DEG C is cooled to after adding 30-50% pitch, insulation continues to stir 4-8h and obtain drilling fluid and use to prevent
Collapse agent polymer-modified asphalt, and the stir speed (S.S.) is 3000r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510484148.1A CN105018048B (en) | 2015-08-08 | 2015-08-08 | Drilling fluid anti-sloughing agent polymer-modified asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510484148.1A CN105018048B (en) | 2015-08-08 | 2015-08-08 | Drilling fluid anti-sloughing agent polymer-modified asphalt |
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| Publication Number | Publication Date |
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| CN105018048A CN105018048A (en) | 2015-11-04 |
| CN105018048B true CN105018048B (en) | 2018-02-27 |
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| CN201510484148.1A Active CN105018048B (en) | 2015-08-08 | 2015-08-08 | Drilling fluid anti-sloughing agent polymer-modified asphalt |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110437632B (en) * | 2018-05-04 | 2021-05-04 | 中国石油化工股份有限公司 | Modifier mother liquor and road asphalt and preparation method thereof |
| CN114479778B (en) * | 2020-10-27 | 2023-09-01 | 中国石油化工股份有限公司 | Plugging agent for oil-based drilling fluid and application |
| CN113652055B (en) * | 2021-09-29 | 2024-04-02 | 绍兴市颖钰化工有限公司 | Preparation method of asphalt modifier |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831281A (en) * | 2010-05-19 | 2010-09-15 | 濮阳市诚信钻采助剂有限公司 | High-dispersion modified asphalt powder and preparation method thereof |
| CN102199417A (en) * | 2010-03-23 | 2011-09-28 | 张以河 | Technology for preparing mineral composite solid lubricant for well drilling on basis of by-products in chemical industry |
| CN102676141A (en) * | 2012-04-20 | 2012-09-19 | 中国海洋石油总公司 | Deformable plugging and anti-sloughing agent for drilling fluid |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8763842B2 (en) * | 2009-03-31 | 2014-07-01 | Bulldog Chemicals, L.L.C. | Well fluid additive systems, well fluids therefrom, and methods of making using such systems |
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- 2015-08-08 CN CN201510484148.1A patent/CN105018048B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199417A (en) * | 2010-03-23 | 2011-09-28 | 张以河 | Technology for preparing mineral composite solid lubricant for well drilling on basis of by-products in chemical industry |
| CN101831281A (en) * | 2010-05-19 | 2010-09-15 | 濮阳市诚信钻采助剂有限公司 | High-dispersion modified asphalt powder and preparation method thereof |
| CN102676141A (en) * | 2012-04-20 | 2012-09-19 | 中国海洋石油总公司 | Deformable plugging and anti-sloughing agent for drilling fluid |
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