CN108793865A - A kind of bottom water reservoir oilwell water shutoff agent - Google Patents
A kind of bottom water reservoir oilwell water shutoff agent Download PDFInfo
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- CN108793865A CN108793865A CN201810491994.XA CN201810491994A CN108793865A CN 108793865 A CN108793865 A CN 108793865A CN 201810491994 A CN201810491994 A CN 201810491994A CN 108793865 A CN108793865 A CN 108793865A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
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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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00293—Materials impermeable to liquids
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention belongs to the water shutoff in oil well fields used in oil exploitation, and in particular to a kind of bottom water reservoir oilwell water shutoff agent, it is formed by following component according to weight percent mixture：Host agent is 50%-98%, nanometer strengthener 1%-30%, retarder 1%-20%, it is short that the conventional cement class blocking agent thickening time is overcome according to the water shutoff agent of this formula production, it is easily shunk after solidification, the technical problem low with formation cementation intensity, the water outlet crack of hyposmosis bottom water reservoir high water-cut well can be effectively blocked, and the bearing requirements of fracturing yield increasing after water blockoff can be met.
Description
Technical field
The invention belongs to the water shutoff in oil well fields used in oil exploitation, and in particular to a kind of bottom water reservoir oil well
Water shutoff agent.
Background technology
In hyposmosis bottom water reservoir development process, due to being influenced by formation fracture and anisotropism, pressure break changes in addition
Operation is made, links up bottom water after easily causing oil well measure, aqueous ascensional range is big, High water cut, and the presence of these wells seriously affects
The performance of oil well productivity and oil field long term stable production.Conventional control water-plugging technique cannot be satisfied the volume increase of such oil reservoir control water at present
Demand.The phase starts exploratory development to bottom water reservoir control water-plugging technique both at home and abroad in the early 1990s, undergoes the development and progress of more than ten years,
There is the technology that bottom water reservoir early water block-off, bottom water watered-out well water blockoff etc. are directed to middle and high infiltration oil field.But in hyposmosis bottom water oil
Technical bottleneck is always existed in terms of the control water blockoff of Tibetan：On the one hand, chemical water plugging of oil well conventional at present is mainly Polymer Plugging Agent,
And to be often discharged intensity big for hyposmosis bottom water reservoir high water-cut well, and well head pressure is higher, Polymer Plugging Agent intensity is difficult to meet
It blocks and requires；On the other hand, for hyposmosis bottom water reservoir, under existing technology, the high-strength blocking agent such as big cement class of intensity
Injection difference easily causes near wellbore zone reservoir damage and is easily shunk after curing, low with formation cementation intensity, shows high water-cut well
Go out to block up incessantly or increases production the problems such as difficulty is big after blocking.
Therefore, to solve the above problems, the present invention proposes a kind of bottom water reservoir oilwell water shutoff agent prescription, matched according to this
It is short that the water shutoff agent just produced overcomes the conventional cement class blocking agent thickening time, is easily shunk after solidification, with formation cementation intensity
Low technical problem, can effectively block the water outlet crack of hyposmosis bottom water reservoir high water-cut well, and can meet pressure break increasing after water blockoff
The bearing requirements of production.
Invention content
The purpose of the present invention one is that overcome conventional chemical water plugging of oil well be mainly Polymer Plugging Agent, and hyposmosis bottom water oil
Hiding high water-cut well, to be often discharged intensity big, and well head pressure is higher, and Polymer Plugging Agent intensity is difficult to meet the problem of closure requires；
Purpose second is that overcoming hyposmosis bottom water reservoir under existing technology, easily make by the high-strength blocking agent injection difference such as big cement class of intensity
It is easily shunk near wellbore zone reservoir damage and after curing, it is low with formation cementation intensity, high water-cut well is shown stifled incessantly or stifled
Increase production the big problem of difficulty after firmly.
For this purpose, the present invention provides a kind of bottom water reservoir oilwell water shutoff agent, it is mixed by following component according to weight percent
With into：Host agent is 50%-98%, nanometer strengthener 1%-30%, retarder 1%-20%.
The host agent is G class g cements or superfine cement, and the particle size range of G class g cements or superfine cement is 0.2 μm -20 μm.
The nanometer strengthener is hydrophilic nano-silicon dioxide and lipophilic nano silicon dioxide is 4 in mass ratio:1-
1：4 mixtures.
The retarder is larch sulfonation tannin extract, and larch sulfonation tannin extract main component is the sulfonation of tannin and non-tannis
Product.
The mass ratio of the hydrophilic nano-silicon dioxide and lipophilic nano silicon dioxide is 1:1.
The grain size of the nanometer strengthener is less than 50nm.
The bottom water reservoir oilwell water shutoff agent is the water shutoff agent suspension of 50% mass concentration, the water shutoff agent of 50% mass concentration
Suspension is formed by following component according to weight percent mixture：80% superfine cement, 15% nanometer strengthener and 5% retarder.
The preparation method of the bottom water reservoir oilwell water shutoff agent is：It is 50%-98% that weight percent is added in kneader
Host agent, add the nanometer strengthener that weight percent is 1%-30% and the retarder that weight percent is 1%-40%, stir
30min is with uniform up to three's mixture, and stopping stirring is to get bottom water reservoir oilwell water shutoff agent.
Beneficial effects of the present invention：
1, it is prepared simply according to the nano combined high-strength blocking agent of inventive formulation production, the thickening time is controllable, can be according to design need
Regulate and control the thickening time, it is short to solve the traditional cements class blocking agent thickening time, easily causes the problem of downhole safety accident.
2, the nano combined high-strength blocking agent produced according to inventive formulation, microdilatancy after solidification solve traditional cements class
It is easily shunk after blocking agent solidification, the problem low with formation cementation intensity.
3, the nano combined high-strength blocking agent produced according to inventive formulation, since nano material fills, pressure resistance after solidification
Degree is big, solves that traditional cements class blocking agent cured strength is low, cannot meet the problem that fracturing yield increasing transformation after water blockoff requires.
Description of the drawings
The present invention is described in further details below with reference to attached drawing.
Fig. 1 is the thickening curve graph of the nano combined high-strength blocking agent of 50% mass concentration；
Fig. 2 is the compression strength curve graph of the nano combined high-strength blocking agent of 50% mass concentration.
Specific implementation mode
Embodiment 1：
A kind of bottom water reservoir oilwell water shutoff agent, it is formed by following component according to weight percent mixture：Host agent be 50%-98%,
Nanometer strengthener is 1%-30%, retarder 1%-20%.The host agent is G class g cements or superfine cement, G class g cements or ultra-fine water
The particle size range of mud is 0.2 μm -20 μm；The nanometer strengthener is hydrophilic nano-silicon dioxide and lipophilic nanometer titanium dioxide
Silicon is 4 in mass ratio:1-1：4 mixtures；The retarder is larch sulfonation tannin extract, and larch sulfonation tannin extract main component is
The sulfonated products of tannin and non-tannis；The grain size of the nanometer strengthener is less than 50nm.
The preparation method of the bottom water reservoir oilwell water shutoff agent is：It is 50%-98% that weight percent is added in kneader
Host agent, add the nanometer strengthener that weight percent is 1%-30% and the retarder that weight percent is 1%-40%, stir
30min is with uniform up to three's mixture, and stopping stirring is to get bottom water reservoir oilwell water shutoff agent.
Beneficial effects of the present invention：
1, it is prepared simply according to the nano combined high-strength blocking agent of inventive formulation production, the thickening time is controllable, can be according to design need
Regulate and control the thickening time, it is short to solve the traditional cements class blocking agent thickening time, easily causes the problem of downhole safety accident.
2, the nano combined high-strength blocking agent produced according to inventive formulation, microdilatancy after solidification solve traditional cements class
It is easily shunk after blocking agent solidification, the problem low with formation cementation intensity.
3, the nano combined high-strength blocking agent produced according to inventive formulation, since nano material fills, pressure resistance after solidification
Degree is big, solves that traditional cements class blocking agent cured strength is low, cannot meet the problem that fracturing yield increasing transformation after water blockoff requires.
Embodiment 2：
A kind of bottom water reservoir oilwell water shutoff agent, it is formed by following component according to weight percent mixture：Host agent is 50%, nanometer
Reinforcing agent is 10%, retarder 40%.The host agent is the G class g cements that grain size is 10 μm；The nanometer strengthener is hydrophilic
Nano silicon dioxide and lipophilic nano silicon dioxide are 1 in mass ratio:1 mixture；The retarder is larch sulfonation evergreen chinquapin
Glue, larch sulfonation tannin extract main component are the sulfonated products of tannin and non-tannis；The grain size of the nanometer strengthener is 50nm.
The preparation method of the bottom water reservoir oilwell water shutoff agent is：The master that weight percent is 50% is added in kneader
Agent, adds the nanometer strengthener that weight percent is 10% and the retarder that weight percent is 40%, stirring 30min with up to
Three's mixture is uniform, stops stirring to get bottom water reservoir oilwell water shutoff agent.
Embodiment 3：
A kind of bottom water reservoir oilwell water shutoff agent, it is formed by following component according to weight percent mixture：Host agent is 50%, nanometer
Reinforcing agent is 10%, retarder 40%.The host agent is the superfine cement that grain size is 15 μm；The nanometer strengthener is hydrophilic
Nano silicon dioxide and lipophilic nano silicon dioxide are 1 in mass ratio:1 mixture；The retarder is larch sulfonation evergreen chinquapin
Glue, larch sulfonation tannin extract main component are the sulfonated products of tannin and non-tannis；The grain size of the nanometer strengthener is 40nm.
The preparation method of the bottom water reservoir oilwell water shutoff agent is：The master that weight percent is 50% is added in kneader
Agent, adds the nanometer strengthener that weight percent is 10% and the retarder that weight percent is 40%, stirring 30min with up to
Three's mixture is uniform, stops stirring to get bottom water reservoir oilwell water shutoff agent.
Embodiment 4：
A kind of bottom water reservoir oilwell water shutoff agent, it is formed by following component according to weight percent mixture：Host agent is 70%, nanometer
Reinforcing agent is 5%, retarder 25%.The host agent is the G class g cements that grain size is 12 μm；The nanometer strengthener is received for hydrophilic
Rice silica and lipophilic nano silicon dioxide are 1 in mass ratio:1 mixture；The retarder is larch sulfonation tannin extract,
Larch sulfonation tannin extract main component is the sulfonated products of tannin and non-tannis；The grain size of the nanometer strengthener is 30nm.
The preparation method of the bottom water reservoir oilwell water shutoff agent is：The master that weight percent is 70% is added in kneader
Agent, adds the nanometer strengthener that weight percent is 5% and the retarder that weight percent is 25%, stirring 30min with up to
Three's mixture is uniform, stops stirring to get bottom water reservoir oilwell water shutoff agent.
Embodiment 5：
A kind of bottom water reservoir oilwell water shutoff agent, it is formed by following component according to weight percent mixture：Host agent is 90%, nanometer
Reinforcing agent is 2%, retarder 8%.The host agent is the superfine cement that grain size is 5 μm；The nanometer strengthener is received for hydrophilic
Rice silica and lipophilic nano silicon dioxide are 1 in mass ratio:1 mixture；The retarder is larch sulfonation tannin extract,
Larch sulfonation tannin extract main component is the sulfonated products of tannin and non-tannis；The grain size of the nanometer strengthener is 20nm.
The preparation method of the bottom water reservoir oilwell water shutoff agent is：The master that weight percent is 90% is added in kneader
Agent adds the nanometer strengthener that weight percent is 2% and the retarder that weight percent is 8%, and 30min is with up to three for stirring
Person's mixture is uniform, stops stirring to get bottom water reservoir oilwell water shutoff agent.
Embodiment 6：
A kind of bottom water reservoir oilwell water shutoff agent, it is formed by following component according to weight percent mixture：Host agent is 85%, nanometer
Reinforcing agent is 5%, retarder 10%.The host agent is the superfine cement that grain size is 20 μm；The nanometer strengthener is hydrophilic
Nano silicon dioxide and lipophilic nano silicon dioxide are 1 in mass ratio:1 mixture；The retarder is larch sulfonation evergreen chinquapin
Glue, larch sulfonation tannin extract main component are the sulfonated products of tannin and non-tannis；The grain size of the nanometer strengthener is 10nm.
The preparation method of the bottom water reservoir oilwell water shutoff agent is：The master that weight percent is 85% is added in kneader
Agent, adds the nanometer strengthener that weight percent is 5% and the retarder that weight percent is 10%, stirring 30min with up to
Three's mixture is uniform, stops stirring to get bottom water reservoir oilwell water shutoff agent.
Embodiment 7：
A kind of bottom water reservoir oilwell water shutoff agent, it is formed by following component according to weight percent mixture：Host agent is 80%, nanometer
Reinforcing agent is 10%, retarder 10%.The host agent is the superfine cement that grain size is 0.2 μm；The nanometer strengthener is hydrophilic
Type nano silicon dioxide and lipophilic nano silicon dioxide are 1 in mass ratio:1 mixture；The retarder is larch sulfonation
Tannin extract, larch sulfonation tannin extract main component are the sulfonated products of tannin and non-tannis；The grain size of the nanometer strengthener is
15nm。
The preparation method of the bottom water reservoir oilwell water shutoff agent is：The master that weight percent is 80% is added in kneader
Agent, adds the nanometer strengthener that weight percent is 10% and the retarder that weight percent is 10%, stirring 30min with up to
Three's mixture is uniform, stops stirring to get bottom water reservoir oilwell water shutoff agent.
Embodiment 8：
A kind of bottom water reservoir oilwell water shutoff agent, it is formed by following component according to weight percent mixture：Host agent is 80%, nanometer
Reinforcing agent is 15%, retarder 5%.The host agent is the superfine cement that grain size is 13 μm；The nanometer strengthener is hydrophilic
Nano silicon dioxide and lipophilic nano silicon dioxide are 1 in mass ratio:1 mixture；The retarder is larch sulfonation evergreen chinquapin
Glue, larch sulfonation tannin extract main component are the sulfonated products of tannin and non-tannis；The grain size of the nanometer strengthener is 25nm.
The preparation method of the bottom water reservoir oilwell water shutoff agent is：The master that weight percent is 80% is added in kneader
Agent, adds the nanometer strengthener that weight percent is 15% and the retarder that weight percent is 5%, stirring 30min with up to
Three's mixture is uniform, stops stirring to get bottom water reservoir oilwell water shutoff agent.
The hydrophilic nano-silicon dioxide and lipophilic nano silicon dioxide of 1-8 of the embodiment of the present invention is existing product,
It is commercially available.
The effect assessment experiment of the present invention and result：
Fig. 1 is the thickening curve of the nano combined high-strength blocking agent of 50% mass concentration.The thickening time of nano combined high-strength blocking agent exists
It is of great significance to safe construction in practical application.The addition of novel retarder keeps the blocking agent thickening time controllable, can basis
Design needs the thickening time, and it is short to solve the traditional cements class blocking agent thickening time, easily causes the problem of downhole safety accident.
Fig. 1 research evaluations by+15% nanometer strengthener of 80% superfine cement of optimization formula+5% retarder mixture 50% mass concentration
Nano combined high-strength blocking agent suspension, the thickening situation under temperature 50 C, pressure 25MPa experiment conditions, experimental result show,
When blocking agent consistency reaches the 40Bc for being not easy pump note, the thickening time is more than 7h, fully meets the requirement of site operation safety.It is used
Instrument is 9360 pressurizing multiviscosity meters of thousand De Le companies of the U.S..
Fig. 2 is the compression strength curve of the nano combined high-strength blocking agent of 50% mass concentration.Nano combined high-strength blocking agent resists
Subsequent fracturing yield increasing transformation complete to water blockoff is of great significance Compressive Strength in practical applications.Fig. 2 has studied by optimization formula
The nano combined high-strength blocking agent suspension of 50% mass concentration of+5% retarder mixture of+15% nanometer strengthener of 80% superfine cement,
By the compressive strength test that API test methods carry out, experimental condition：Conserved respectively under the conditions of 50 DEG C 24 hours, 48 hours, it is 72 small
When, test Behavior of Hardened Cement Paste compression strength.Experimental result shows, 24 hours compression strength 24.3MPa, 48 hours compression strength
The addition of 29.7MPa, 72 hours compression strength 42.3MPa, nanometer strengthener greatly improve the anti-of nano combined high-strength blocking agent
Compressive Strength fully meets the requirement of fracturing yield increasing transformation after water blockoff.Instrument is the WHY-10/300 type microcomputers of Shanghai Hua Long
Control full-automatic pressure testing machine.
The nano combined high-strength blocking agent expansion rate experimental data table of 1 50% mass concentration of table
Table 1 is that the nano combined high-strength blocking agent of 50% mass concentration is tested in the expansion rate of different nanometer strengthener dosages
Tables of data（The nano combined high-strength blocking agent suspension of 50% mass concentration）.Nanometer strengthener is a kind of hydrophilic nano titanium dioxide
The mixture of silicon and lipophilic nano silicon dioxide, grain size are less than 50nm, and aquation production is penetrated into cement granules hydration process
The intracell of object generates lattice dilatation, and to generate volume contraction after preventing cement mortar aquation, and it is multiple to improve nanometer
The compression strength after high-strength blocking agent solidification is closed, does not destroy the lattice structure of hydrated product.The difference that interior passes through nanometer strengthener
Dosage tests the shrinkage of nano combined high-strength blocking agent, and experimental result is shown, nano combined high-strength when being not added with nanometer strengthener
Contraction is generated after blocking agent solidification, shrinkage 3.2%, when nanometer strengthener dosage is more than 2%, nano combined high-strength blocking agent cures
Not will produce contraction afterwards, and there is certain microdilatancy effect, ensure that after nano combined high-strength blocking agent solidification with the effective glue in stratum
Knot, no microgap phenomenon.Instrument is cement shrinkage dilatometric analysis instrument.
The nano combined high-strength blocking agent technical indicator of 2 50% mass concentration of table（50 DEG C of experimental temperature）
Table 2 is the performance indicator of nano combined high-strength blocking agent, and the performance indicator of nano combined high-strength blocking agent should in embodiment 1-8
Meet the requirement of table 2.
In the bottom water reservoir oilwell water shutoff experiment of same block, the conventional water-plugging technology of application early period and water shutoff agent are blocked up
Water is constructed, and measure effective percentage is less than 50%；After the nano combined high-strength blocking agent field test produced with above-described embodiment, water blockoff
Measure effective percentage is all higher than 90%, and the fracturing yield increasing transformation volume increase success rate 100% that water blockoff success well subsequently carries out, effect are aobvious
It writes.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
Be with the present invention it is same or analogous design all belong to the scope of protection of the present invention within.
Claims (8)
1. a kind of bottom water reservoir oilwell water shutoff agent, it is characterised in that：It is formed by following component according to weight percent mixture：It is main
Agent is 50%-98%, nanometer strengthener 1%-30%, retarder 1%-20%.
2. bottom water reservoir oilwell water shutoff agent as described in claim 1, it is characterised in that：The host agent is G class g cements or ultra-fine
The particle size range of cement, G class g cements or superfine cement is 0.2 μm -20 μm.
3. bottom water reservoir oilwell water shutoff agent as claimed in claim 2, it is characterised in that：The nanometer strengthener is received for hydrophilic
Rice silica and lipophilic nano silicon dioxide are 4 in mass ratio:1-1：4 mixtures.
4. bottom water reservoir oilwell water shutoff agent as claimed in claim 3, it is characterised in that：The retarder is larch sulfonation evergreen chinquapin
Glue, larch sulfonation tannin extract main component are the sulfonated products of tannin and non-tannis.
5. bottom water reservoir oilwell water shutoff agent as claimed in claim 4, it is characterised in that：The hydrophilic nano-silicon dioxide and
The mass ratio of lipophilic nano silicon dioxide is 1:1.
6. bottom water reservoir oilwell water shutoff agent as claimed in claim 5, it is characterised in that：The grain size of the nanometer strengthener is less than
50nm。
7. bottom water reservoir oilwell water shutoff agent as claimed in claim 6, it is characterised in that：The bottom water reservoir oilwell water shutoff agent is
The water shutoff agent suspension of the water shutoff agent suspension of 50% mass concentration, 50% mass concentration is mixed by following component according to weight percent
With into：80% superfine cement, 15% nanometer strengthener and 5% retarder.
8. bottom water reservoir oilwell water shutoff agent as claimed in claim 7, it is characterised in that：The bottom water reservoir oilwell water shutoff agent
Preparation method is：The host agent that weight percent is 50%-98% is added in kneader, it is 1%-30%'s to add weight percent
Nanometer strengthener and the retarder that weight percent is 1%-40%, stirring 30min is with uniform up to three's mixture, stopping stirring,
Up to bottom water reservoir oilwell water shutoff agent.
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| CN201810491994.XA CN108793865B (en) | 2018-05-22 | 2018-05-22 | Water shutoff agent for bottom water reservoir oil well |
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| CN201810491994.XA CN108793865B (en) | 2018-05-22 | 2018-05-22 | Water shutoff agent for bottom water reservoir oil well |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115536312A (en) * | 2021-06-30 | 2022-12-30 | 中国石油天然气集团有限公司 | Plugging agent system and preparation method and application thereof |
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| CN103626518A (en) * | 2013-12-02 | 2014-03-12 | 苏州市建筑科学研究院有限公司 | High performance water-based organic silicon paste for protecting concrete structure and preparation method thereof |
| CN105462571A (en) * | 2015-11-16 | 2016-04-06 | 中国石油大学(华东) | Low-temperature cementing slurry system and composition thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115536312A (en) * | 2021-06-30 | 2022-12-30 | 中国石油天然气集团有限公司 | Plugging agent system and preparation method and application thereof |
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