CN107903881A - A kind of polymer filtrate reducer of high-temperature high-density high salinity water-base drilling fluid - Google Patents
A kind of polymer filtrate reducer of high-temperature high-density high salinity water-base drilling fluid Download PDFInfo
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- CN107903881A CN107903881A CN201711097202.2A CN201711097202A CN107903881A CN 107903881 A CN107903881 A CN 107903881A CN 201711097202 A CN201711097202 A CN 201711097202A CN 107903881 A CN107903881 A CN 107903881A
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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
- C09K8/04—Aqueous well-drilling compositions
- C09K8/06—Clay-free compositions
- C09K8/12—Clay-free compositions containing synthetic organic macromolecular compounds or their precursors
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
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Abstract
The present invention provides a kind of polymer filtrate reducer of high-temperature high-density high salinity water-base drilling fluid.The raw material composition of the polymer filtrate reducer includes：Polymer A, polymer B and polymer C；Polymer A includes：Acrylamide, 2 acrylamido, 2 methyl propane sulfonic acid, N vinyl Topiramate Los oxazolidinone and redox initiator；Polymer B includes：Acrylamide, 2 acrylamido, 2 methyl propane sulfonic acid, N vinyl Topiramate Los oxazolidinone, cross-linking monomer and redox initiator；Polymer C includes：Water phase, oil phase, initiator and surfactant.The fluid loss additive of the present invention is a kind of filtrate reducer for drilling fluid suitable for high temperature, high pressure, high density and high salinity.
Description
Technical field
The present invention relates to a kind of fluid loss additive, more particularly to a kind of polymerization of high-temperature high-density high salinity water-base drilling fluid
Thing fluid loss additive, belongs to oil exploration drilling technical field.
Background technology
Vena caval filter is a kind of important performance of drilling fluid.Polymer filtrate reducer is that a kind of of water-base drilling fluid important adds
Add agent, for improving water-base drilling fluid filtration property, reduce filter loss of the drilling fluid in drilling process.
The polymer filtrate reducer suitable for high temperature and pressure water-base drilling fluid system is usually to contain propylene currently on the market
The water solubility copolymer of acid amides -2- acrylamide-2-methylpro panesulfonic acids or N- vinyl Topiramate Los oxazolidinones.However, in high concentration
Brine system in, particularly chlorine ion concentration is when being more than 150000-180000mg/L, in (150 DEG C or at higher temperature of high temperature
Degree) under conditions of high pressure and high density (more than 1.8), single fluid loss additive can not usually provide effective vena caval filter.
It is to reduce high salt concentration therefore it provides available for polymer filtrate reducer system under high temperature and pressure conditions of high density
The key of aqueous drilling fluid system filtration property.
The content of the invention
In order to solve the above-mentioned technical problem, it is an object of the invention to provide one kind be suitable for high temperature (150 DEG C -205 DEG C),
(salt content of water-base drilling fluid is for high pressure, high density (density of water-base drilling fluid is 1.8kg/L-2.4kg/L) and high salinity
Filtrate reducer for drilling fluid 150000mg/L-190000mg/L).
In order to realize above-mentioned technical purpose, the present invention provides a kind of the poly- of high-temperature high-density high salinity water-base drilling fluid
Compound fluid loss additive, is counted using the gross mass of the polymer filtrate reducer as 100%, the raw material composition bag of the polymer filtrate reducer
Include：The polymer B of polymer A, 30%-50% of 30%-50% and the polymer C of 10%-30%, the polymer filtrate reducer
In the sum of the mass percent of each raw material be 100%；Wherein,
Counted using the gross mass of polymer A as 100%, the raw material composition of polymer A includes：The acrylamide of 30%-80%,
The 2- acrylamide-2-methylpro panesulfonic acids of 10%-50%, the N- vinyl Topiramate Los oxazolidinone of 5%-30% and 0.02% oxidation
Initiator is reduced, the sum of mass percent of each raw material is 100% in polymer A；
Counted using the gross mass of polymer B as 100%, the raw material composition of polymer B includes：The acrylamide of 30%-80%,
2- acrylamide-2-methylpro panesulfonic acids, the N- vinyl Topiramate Los oxazolidinone of 5%-30%, the 0.05%-0.5% of 10%-50%
Cross-linking monomer and 0.02% redox initiator, the sum of mass percent of each raw material is 100% in polymer B；
Counted using the gross mass of polymer C as 100%, the raw material composition of polymer C includes：The water phase of 60%-80%,
The surfactant of the oil phase of 20%-40%, the initiator of 0.01%-0.1% and 1%-5%, each raw material in the polymer C
The sum of mass percent be 100%.
In above-mentioned polymer filtrate reducer, it is preferable that counted using the gross mass of polymer C as 100%, the oil phase bag of use
Include Tween-81 (more preferably 4wt%), the paraffin oil of 25wt% of 1wt%-5wt%.
In above-mentioned polymer filtrate reducer, it is preferable that water mutually includes：Acrylamide, the 20%-70% of 30%-80%
2- acrylamide-2-methylpro panesulfonic acids and 0.1%-1% cross-linking monomer.
In above-mentioned polymer filtrate reducer, it is preferable that counted using the gross mass of polymer C as 100%, the addition of initiator
Measure as 0.04%.
In above-mentioned polymer filtrate reducer, it is preferable that the initiator used is azodiisobutyronitrile.
In above-mentioned polymer filtrate reducer, it is preferable that the cross-linking monomer used in polymer B is N, N'- di-2-ethylhexylphosphine oxides
Acrylamide, ethylene glycol dimethacrylate, divinylsulfone, diethylene glycol diallyl ether, polyethylene glycol (200) acrylic acid
Ester, polyethylene glycol (400) acrylate, polytetramethylene glycol double methacrylate, ethylene glycol diacrylate and polyethylene glycol are double
One or more of combinations in acrylate.
Each material in the cross-linking monomer of use is produced by Sigma-Aldrich.
In above-mentioned polymer filtrate reducer, it is preferable that it is 1 that redox initiator, which includes mass ratio,:1 oxidant and
Reducing agent, wherein, the oxidant used is sodium bromate, sodium peroxydisulfate and organic peroxide；The reducing agent used is sulfurous acid
Hydrogen sodium.
In above-mentioned polymer filtrate reducer, it is preferable that the surfactant used is Tween-80, Tween-60, tween-
81, Tween-85, tween -61, SPAN-80, one or more of combinations in SPAN-60.
In above-mentioned polymer filtrate reducer, it is preferable that polymer A is through the following steps that be prepared：
Acrylamide, 2- acrylamide-2-methylpro panesulfonic acids, N- vinyl Topiramate Los oxazolidinones is soluble in water, and formation contains
There is the mixed liquor of 30%-40% polymer monomers；
Nitrogen is passed through to remove the oxygen in mixed liquor, adds redox initiator, gel is formed, by crushing, doing
Dry and grinding, obtains the powder of polymer A.
In the above-mentioned polymer filtrate reducer, it is preferable that polymer B is through the following steps that be prepared：
Acrylamide, 2- acrylamide-2-methylpro panesulfonic acids, N- vinyl Topiramate Los oxazolidinone, cross-linking monomer are dissolved in water
In, form the mixed liquor containing 30%-40% polymer monomers；
Nitrogen is passed through to remove the oxygen in mixed liquor, adds redox initiator, gel is formed, by crushing, doing
Dry and grinding, obtains the powder of polymer B.
In above-mentioned polymer filtrate reducer, it is preferable that polymer C is through the following steps that be prepared：
Oil phase is stirred into 10min-30min (more preferably under the rotating speed of 350rpm-700rpm (more preferably 350rpm)
10min)；
Adjust water phase pH to 8-9；
Under stirring, the water after processing is added in oil phase, adjust rotating speed to 500rpm-750rpm (more preferably
500rpm), 30min-60min (more preferably 30min) is stirred, adds initiator；
Nitrogen is passed through, 40 DEG C -48 DEG C (more preferably 45 are warming up under the rotating speed of 500rpm-750rpm (more preferably 500rpm)
DEG C), 60 DEG C of -70 DEG C of reaction 6h are adjusted the temperature to, are heated up 75 DEG C -80 DEG C (more preferably 75 DEG C), reaction 1h-3h (more preferably 2h)；
It is cooled to 35 DEG C -45 DEG C (more preferably 40 DEG C), adds surfactant, stirring 30min-60min is (more preferably
30min), it is cooled to room temperature, obtains polymer C.
In above-mentioned polymer filtrate reducer, it is preferable that the flow velocity of nitrogen is 20mL/min-30mL/min.
Embodiment according to the present invention, polymer A, polymer B and polymer C are mixed in proportion, you can
To the polymer filtrate reducer of high-temperature high-density high salinity water-base drilling fluid.
The polymer filtrate reducer of above-mentioned high-temperature high-density high salinity water-base drilling fluid of the present invention is suitable for temperature
150 DEG C -205 DEG C, the salt content of water-base drilling fluid is 150000mg/L-190000mg/L, and the density of water-base drilling fluid is
The water-base drilling fluid of 1.8kg/L-2.4kg/L.
When the polymer filtrate reducer of above-mentioned high-temperature high-density high salinity water-base drilling fluid is specifically used for water-base drilling fluid,
By polymer A, polymer B and polymer C be proportionally added into water-base drilling fluid (counted using the gross mass of water-base drilling fluid as 100%,
The addition of the polymer filtrate reducer of the high-temperature high-density high salinity water-base drilling fluid of the present invention is 2%-6%) in, formed
Fluid loss additive.
The polymer filtrate reducer of the high-temperature high-density high salinity water-base drilling fluid of the present invention is (poly- using three kinds of polymer
Compound A, acrylamide, 2- acrylamide-2-methylpro panesulfonic acids and N- vinyl Topiramate Los oxazolidinone copolymers；Polymer B, crosslinking
Acrylamide, 2- acrylamide-2-methylpro panesulfonic acids and N- vinyl Topiramate Los oxazolidinone copolymers；And polymer C, crosslinking
Acrylamide, 2- acrylamide-2-methylpro panesulfonic acids copolymer inverse emulsion), suitable for temperature be 150 DEG C -205 DEG C,
The salt content of water-base drilling fluid is 150000mg/L-190000mg/L, and the density of water-base drilling fluid is 1.8kg/L-2.4kg/L's
Water-base drilling fluid, can be very good filtration property of the control water-base drilling fluid under high temperature, heavy brines.
Embodiment
In order to which technical characteristic, purpose and the beneficial effect of the present invention is more clearly understood, now to the skill of the present invention
Art scheme carry out it is described further below, but it is not intended that to the present invention can practical range restriction.
Embodiment 1
Present embodiments provide the present invention provides a kind of high-temperature high-density high salinity water-base drilling fluid polymer drop
Fluid loss agents, are counted using the gross mass of the polymer filtrate reducer as 100%, and the raw material composition of the polymer filtrate reducer includes：It is poly-
Compound A, polymer B and polymer C；Wherein, polymer A is 35%；Polymer B is 40%, and polymer C is 25%
Counted using the gross mass of polymer A as 100%, the raw material composition of polymer A includes：50% acrylamide,
34.98% 2- acrylamide-2-methylpro panesulfonic acids, 15% N- vinyl Topiramate Los oxazolidinone and 0.02% redox are drawn
Send out agent (mass ratio 1:1 sodium bromate and sodium hydrogensulfite)；
Counted using the gross mass of polymer B as 100%, the raw material composition of polymer B includes：49.7% acrylamide,
35% 2- acrylamide-2-methylpro panesulfonic acids, 14.98% N- vinyl Topiramate Los oxazolidinone, 0.3% cross-linking monomer and
0.02% redox initiator (mass ratio 1:1 sodium bromate and sodium hydrogensulfite)；
Counted using the gross mass of polymer C as 100%, the raw material composition of polymer C includes：69% water phase, 29% oil phase,
0.04% azodiisobutyronitrile and 1.96% surfactant (Tween-81)；Wherein, water mutually includes：49.8% propylene
Acid amides, 50% 2- acrylamide-2-methylpro panesulfonic acids and 0.2% cross-linking monomer；Tween-81 of the oil phase including 4wt%,
The paraffin oil of 25wt%.
Polymer A is through the following steps that be prepared：
Acrylamide, 2- acrylamide-2-methylpro panesulfonic acids, N- vinyl Topiramate Los oxazolidinones is soluble in water, formed mixed
Close liquid；
Nitrogen is passed through to remove the oxygen in mixed liquor, adds redox initiator, gel is formed, by crushing, doing
Dry and grinding obtains the polymer A powder.
Polymer B is through the following steps that be prepared：
Acrylamide, 2- acrylamide-2-methylpro panesulfonic acids, N- vinyl Topiramate Los oxazolidinone, cross-linking monomer are dissolved in water
In, form mixed liquor；
Nitrogen is passed through to remove the oxygen in mixed liquor, adds redox initiator, gel is formed, by crushing, doing
Dry and grinding obtains the polymer B powder.
Polymer C is through the following steps that be prepared：
Oil phase is stirred into more than 10min under the rotating speed of 350rpm；
Adjust water phase pH to 8-9；
Under stirring, the water after processing is added in oil phase, rotating speed is adjusted to 500rpm, stirs 30min, add
Initiator；
Nitrogen (flow velocity 20mL/min-30mL/min) is passed through, 45 DEG C are warming up under the rotating speed of 500rpm, is adjusted the temperature to
60 DEG C of -70 DEG C of reaction 6h, heat up 75 DEG C, react 2h；
40 DEG C are cooled to, adds surfactant, 30min is stirred, is cooled to room temperature, obtains polymer C.
Water-base drilling fluid as shown in Table 1 is present embodiments provided, it is front and rear when heat rolling aging 16 is small at 180 DEG C to test it
The performance test results, including the density of drilling fluid, acid-base value and rheological property and high temperature and high pressure filter loss, concrete outcome is such as
Shown in table 2.
Table 1
| Drilling fluid composition | Unit | Experiment 1 | Experiment 2 | Experiment 3 |
| Saturated brine | Gram | 286 | 294 | 293 |
| Sodium acid carbonate | Gram | 0.5 | 0.5 | 0.5 |
| Sodium hydroxide | Gram | 1.5 | 1.5 | 1.5 |
| Polymer A | Gram | 2 | 2 | 2 |
| Polymer B | Gram | 4 | 2 | 3 |
| Polymer C | Gram | 2 | 2 | 3 |
| Sodium sulfite | Gram | 1.50 | 1.50 | 1.50 |
| Graphite | Gram | 4 | 4 | 4 |
| Barite | Gram | 376 | 380 | 375 |
| Xanthans | Gram | 0.12 | 0.15 | 0.15 |
| Ultrafine calcium | Gram | 23 | 13 | 13 |
Table 2
Above example illustrates that the polymer filtrate reducer of high-temperature high-density high salinity water-base drilling fluid of the invention is fitted
For the water-base drilling fluid of high temperature, high pressure, high density and high salinity, control water-base drilling fluid is can be very good in high temperature, height
Filtration property under concentration brines.
Claims (10)
1. a kind of polymer filtrate reducer of high-temperature high-density high salinity water-base drilling fluid, it is characterised in that with the polymer
The gross mass of fluid loss additive is 100% meter, and the raw material composition of the polymer filtrate reducer includes：The polymer A of 30%-50%,
The polymer B of 30%-50% and the polymer C of 10%-30%, in the polymer filtrate reducer mass percent of each raw material it
With for 100%；Wherein,
Counted using the gross mass of the polymer A as 100%, the raw material composition of the polymer A includes：The propylene of 30%-80%
Acid amides, the 2- acrylamide-2-methylpro panesulfonic acids of 10%-50%, the N- vinyl Topiramate Los oxazolidinone and 0.02% of 5%-30%
Redox initiator, the sum of mass percent of each raw material is 100% in the polymer A；
Counted using the gross mass of the polymer B as 100%, the raw material composition of the polymer B includes：The propylene of 30%-80%
Acid amides, the 2- acrylamide-2-methylpro panesulfonic acids of 10%-50%, the N- vinyl Topiramate Los oxazolidinone of 5%-30%, 0.05%-
0.5% cross-linking monomer and 0.02% redox initiator, the sum of mass percent of each raw material is in the polymer B
100%；
Counted using the gross mass of the polymer C as 100%, the raw material composition of the polymer C includes：The water phase of 60%-80%,
The surfactant of the oil phase of 20%-40%, the initiator of 0.01%-0.1% and 1%-5%, each raw material in the polymer C
The sum of mass percent be 100%.
2. polymer filtrate reducer according to claim 1, it is characterised in that using the gross mass of the polymer C as
100% meter, the oil phase include Tween-81, the paraffin oil of 25wt% of 1wt%-5wt%；
Preferably, counted using the gross mass of the polymer C as 100%, the raw material composition of the water phase includes：30%-80%'s
Acrylamide, the 2- acrylamide-2-methylpro panesulfonic acids of 20%-70% and the cross-linking monomer of 0.1%-1%.
3. polymer filtrate reducer according to claim 1, it is characterised in that using the gross mass of the polymer C as
100% meter, the additive amount of the initiator is 0.04%；Preferably, the initiator is azodiisobutyronitrile.
4. polymer filtrate reducer according to claim 1, it is characterised in that the cross-linking monomer in the polymer B is
N, N'- methylene-bisacrylamide, ethylene glycol dimethacrylate, divinylsulfone, diethylene glycol diallyl ether, poly- second two
Alcohol (200) acrylate, polyethylene glycol (400) acrylate, polytetramethylene glycol double methacrylate, ethylene glycol diacrylate
With one or more of combinations in polyethyleneglycol diacrylate.
5. polymer filtrate reducer according to claim 1, it is characterised in that the redox initiator includes oxidation
Agent and reducing agent, wherein, the oxidant is sodium bromate, sodium peroxydisulfate and organic peroxide, and the reducing agent is sulfurous acid
Hydrogen sodium；Preferably, surfactant is Tween-80, Tween-60, Tween-81, Tween-85, tween -61, SPAN-80, SPAN-
One or more of combinations in 60.
6. polymer filtrate reducer according to claim 1, it is characterised in that the polymer A through the following steps that
It is prepared：
Acrylamide, 2- acrylamide-2-methylpro panesulfonic acids, N- vinyl Topiramate Los oxazolidinones is soluble in water, and formation contains
The mixed liquor of 30%-40% polymer monomers；
Nitrogen is passed through to remove the oxygen in mixed liquor, adds redox initiator, forms gel, by crushing, it is dry and
Grinding, obtains the powder of the polymer A.
7. polymer filtrate reducer according to claim 1, it is characterised in that the polymer B through the following steps that
It is prepared：
Soluble in water, the shape by acrylamide, 2- acrylamide-2-methylpro panesulfonic acids, N- vinyl Topiramate Los oxazolidinone, cross-linking monomer
Into the mixed liquor containing 30%-40% polymer monomers；
Nitrogen is passed through to remove the oxygen in mixed liquor, adds redox initiator, forms gel, by crushing, it is dry and
Grinding, obtains the powder of the polymer B.
8. polymer filtrate reducer according to claim 1, it is characterised in that the polymer C through the following steps that
It is prepared：
Oil phase is stirred into 10min-30min under the rotating speed of 350rpm-700rpm；
Adjust water phase pH to 8-9；
Under stirring, the water after processing is added in oil phase, rotating speed is adjusted to 500rpm-750rpm, stirs 30min-
60min, adds initiator；
Nitrogen is passed through, 40 DEG C -48 DEG C are warming up under the rotating speed of 500rpm-750rpm, adjusts the temperature to 60 DEG C of -70 DEG C of reaction 6h,
75 DEG C -80 DEG C of heating, reacts 1h-3h；
35 DEG C -45 DEG C are cooled to, adds surfactant, 30min-60min is stirred, is cooled to room temperature, obtains polymer C.
9. polymer filtrate reducer according to claim 8, it is characterised in that the flow velocity of nitrogen is 20mL/min-30mL/
min。
10. the polymer filtrate reducer of claim 1-9 any one of them high-temperature high-density high salinity water-base drilling fluids
Using, it is characterised in that it is 150 DEG C -205 DEG C that the polymer filtrate reducer, which is suitable for temperature, and the salt content of water-base drilling fluid is
150000mg/L-190000mg/L, the density of water-base drilling fluid is in the water-base drilling fluid of 1.8kg/L-2.4kg/L.
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| CN201711097202.2A CN107903881B (en) | 2017-11-09 | 2017-11-09 | Polymer fluid loss additive for high-temperature high-density high-salinity water-based drilling fluid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112979883A (en) * | 2021-03-17 | 2021-06-18 | 江苏富淼科技股份有限公司 | High-temperature-resistant salt-resistant polymer, and preparation method and application thereof |
| CN114181682A (en) * | 2021-12-21 | 2022-03-15 | 中海油田服务股份有限公司 | High-temperature-resistant salt-resistant cross-linked polymer filtrate reducer and preparation method and application thereof |
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| US20060019835A1 (en) * | 2004-07-22 | 2006-01-26 | Clariant Gmbh | Thermally stable water-soluble polymer which is crosslinkable at high temperatures |
| US20140367108A1 (en) * | 2013-05-31 | 2014-12-18 | Hallburton Energy Services, Inc. | Acidizing compositions including ampholyte polymers |
| CN104311730A (en) * | 2014-08-22 | 2015-01-28 | 中国石油化工集团公司 | Tackifier for drilling fluid and preparation method thereof |
| CN105017474A (en) * | 2014-04-29 | 2015-11-04 | 中国石油化工股份有限公司 | Low-friction fluid loss agent and preparation method and application thereof |
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2017
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| US20060019835A1 (en) * | 2004-07-22 | 2006-01-26 | Clariant Gmbh | Thermally stable water-soluble polymer which is crosslinkable at high temperatures |
| EP1630181A1 (en) * | 2004-07-22 | 2006-03-01 | Clariant GmbH | Thermostable, watersoluble at high temperatures curable Polymer |
| US20140367108A1 (en) * | 2013-05-31 | 2014-12-18 | Hallburton Energy Services, Inc. | Acidizing compositions including ampholyte polymers |
| CN105017474A (en) * | 2014-04-29 | 2015-11-04 | 中国石油化工股份有限公司 | Low-friction fluid loss agent and preparation method and application thereof |
| CN104311730A (en) * | 2014-08-22 | 2015-01-28 | 中国石油化工集团公司 | Tackifier for drilling fluid and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112979883A (en) * | 2021-03-17 | 2021-06-18 | 江苏富淼科技股份有限公司 | High-temperature-resistant salt-resistant polymer, and preparation method and application thereof |
| CN112979883B (en) * | 2021-03-17 | 2022-03-25 | 江苏富淼科技股份有限公司 | High-temperature-resistant salt-resistant polymer, and preparation method and application thereof |
| CN114181682A (en) * | 2021-12-21 | 2022-03-15 | 中海油田服务股份有限公司 | High-temperature-resistant salt-resistant cross-linked polymer filtrate reducer and preparation method and application thereof |
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| CN107903881B (en) | 2020-09-08 |
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