CN109111902A - A kind of oil well second interface reinforcing agent and preparation method thereof - Google Patents
A kind of oil well second interface reinforcing agent and preparation method thereof Download PDFInfo
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- CN109111902A CN109111902A CN201810900364.3A CN201810900364A CN109111902A CN 109111902 A CN109111902 A CN 109111902A CN 201810900364 A CN201810900364 A CN 201810900364A CN 109111902 A CN109111902 A CN 109111902A
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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
-
- 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
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
Abstract
The present invention relates to a kind of oil well second interface reinforcing agents and preparation method thereof, belong to Interface enhancer technical field.The present invention utilizes inorganic silicic acid magnesium lithium salts, the platy layer thin slice of electrification is formed in water and in the process, the end face of these platy layers is positively charged, level is negatively charged, due to positive and negative charge sucking action, so that gradually forming card room structure in water and in the process lamella, lithium metasilicate magnesium salts limellar stripping disperses to form colorless and transparent coagulant liquid in water, it can form layer protecting film in the polymer surfaces dispersed, inside concrete is penetrated by silicate ion, and generation stable material calcium silicates is reacted with calcium ion in concrete, hole is filled up, improve concrete structure compactness, and it is reacted by the calcium ions and magnesium ions of Si-OH structural unit and concrete surface, form stable complex compound, make concrete surface deactivation, improve the corrosion resistance of concrete, strengthen curing performance, improve the well cementation factor of merit, eliminate adjustment Well interlayer alters, gas well gas channeling phenomenon.
Description
Technical field
The present invention relates to a kind of oil well second interface reinforcing agents and preparation method thereof, belong to Interface enhancer technical field.
Background technique
Due to long-term waterflooding extraction, the equilibrium state on the original stratum in oil field is destroyed, along with voidage-injection imbalance, hypotonic
The effect of blocking of layer, tomography, will form multi-level high pressure zone or under-voltage layer, drilling process destroys the mutual envelope of each layer of position
Closed state depends merely on cementing concrete ring in Completion Operations and restores this closed state, is difficult to complete.Wellbore in drilling process
Irregularly, frequently resulting in mud cannot be replaced completely；The weightlessness of cement slurry in well cementing process easily causes the oil gas water of high pressure zone
Invade cement column；Casing damage, causes index bed to intake, and pressure change occurs, and the above reason can cause water, gas string
Slot.In addition, also found into the research over year, water, gas channelling and second contact surface bonding quality difference also have a direct relationship, and two
The bonding quality at interface is mainly influenced by following factors:
(1) second interface replace net degree.Since the wellbore under physical condition is most irregular, there are undergauges and expanding for part layer position
Phenomenon easily forms thicker false filter cake at the borehole wall, to influence second interface cementing quality when enlarging rate is greater than 15%；(2) water
The contraction of mudstone.Since there are swellings during premature coagulation hardens for Behavior of Hardened Cement Paste, and can be generated centainly in the later period
The contraction of degree thus forms the micropore that can be used as water, has channeling at the borehole wall；(3) compatibility of second interface.Due to
The mud cake that objectionable intermingling between cement slurry and drilling fluid, cement slurry and drilling fluid are formed on the borehole wall is also incompatible.Therefore, cement
Compatibility is poor between the mud cake on Behavior of Hardened Cement Paste and the borehole wall formed after slurry solidification, keeps second interface intensity low.
It is above-mentioned cementing quality is had an impact in the case where, geological conditions can not change；It can be carried out and effectively adjust
There is the performance of cement slurry, flushing liquor, insulating liquid and drilling fluid and uses technique.But for a long time, due to well cementation and drilling fluid point
Belong to two working procedures, so it is less to solve the problems, such as that the research of well cementation sealing is carried out from drilling fluid angle, it is main to concentrate
In raising mud cake quality, for the use of silicate drilling fluid and MTC technology three.Wherein pass through the dimension to property of drilling fluid merely
Shield and processing cannot fundamentally improve second interface cementing strength to improve mud cake quality, and silicate drilling fluid exists to storage again
Layer injures larger problem, MTC technology is then primarily present complex process, difficulty of construction is big and it is at high cost the problems such as.
Therefore, a kind of drilling fluid Interface enhancer is developed, and researches and develops and matched can effectively enhance second interface glue
The drilling fluid for tying quality, from drilling fluid angle, change drilling fluid be formed by the borehole wall mud cake and cement sheath, stratum it
Between cementing status, reduce influence of the bonding quality to cementing quality of second contact surface, to oil field it is further exploitation have weight
Want meaning.
Summary of the invention
The technical problems to be solved by the invention: occur in well cementing process well interlayer alter, gas well has channeling aiming at the problem that, mention
For a kind of oil well second interface reinforcing agent and preparation method thereof.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of oil well second interface reinforcing agent, including following weight parts raw material composition: 80~100 parts of flyash, 100~150 parts
Lithium magnesium silicate, 200~250 parts of ordinary portland cements, 300~400 parts of quartz sands, 50~60 parts of red muds, 1~5 part of silicon ash,
0.5~1.0 part of water-reducing agent, 50~80 parts of reaction solutions.
The quartz sand is the river sand of fineness modulus 2.6.
The red mud particle diameter is 0.088~0.25mm, specific gravity 2.7~2.9, bulk density 0.8~1.0.
The silicon ash partial size is 0.5~1.0 μm, SiO2Content >=95%, specific surface area are 20000~24000m2/kg。
The water-reducing agent is high performance water reducing agent of polyocarboxy acid, and water-reducing rate is 24~26%, and solid content is 20~21%.
The reaction solution is polyacrylate dispersion, ethylene-vinyl acetate copolymer emulsion, Tween-20, styrene-fourth
Diene copolymers, α-sodium olefin sulfonate, silicone resin polyethers lotion MPS, hydroxyethyl cellulose, glutaraldehyde react at 40~50 DEG C
It is made.
Weight of material part is 250~350 parts of polyacrylate dispersions, 120~160 parts of ethyl vinyl acetates in the reaction solution
Ethylene copolymer emulsion, 8~12 parts of Tween-20s, 8~12 parts of styrene-butadiene copolymer, 50~80 parts of α-olefin sulfonic acids
Sodium, 200~300 parts of silicone resin polyethers lotion MPS, 5~10 parts of hydroxyethyl celluloses, 5~10 parts of glutaraldehydes.
A kind of preparation method of oil well with second interface reinforcing agent, specific steps are as follows:
(1) polyacrylate dispersion, ethylene-vinyl acetate copolymer emulsion, Tween-20, styrene-butadiene copolymer are taken,
It is fitted into high-speed shearing machine after mixing, 30~40min is stirred with 6000~8000r/min, with 200 mesh filter screen mistakes
Filter, obtains mixed emulsion；
(2) α-sodium olefin sulfonate, silicone resin polyethers lotion MPS, hydroxyethyl cellulose, glutaraldehyde are added into mixed emulsion,
20~30min is stirred at 40~50 DEG C, is discharged after being cooled to room temperature, is obtained reaction solution；
(3) it is filled after taking flyash to pulverize and sieve with lithium magnesium silicate, ordinary portland cement, quartz sand, red mud, silicon ash, water-reducing agent
Enter 20~30min of mixing in batch mixer, adds after reaction solution continues 5~8min of stirring and discharge, obtain oil well is enhanced with second interface
Agent.
The present invention is compared with other methods, and advantageous effects are:
(1) present invention using polyacrylate dispersion, ethylene-vinyl acetate copolymer emulsion, styrene-butadiene copolymer,
Silicone resin polyethers lotion MPS compounding is cross-linked into polymer emulsion, can effectively infiltrate through in concrete, strengthens the boundary of wetting with mortar
In face structure, with cement mixing hydration process, silicon ash is mixed in ordinary portland cement, Ca/Si reduces in hyrate, aquation
Object can form the structure of more uniform densification with other ions bindings, while can make around concrete mixed with the interfacial agents of silicon ash
Full of fine and close unbodied C-S-H phase, thus make interfacial transition zone be improved significantly, reduce harmful hole and more evil holes, mention
High interface binding intensity, the surface cohesive force between substrate surface and mortar greatly improve；
(2) present invention utilizes the inorganic silicic acid magnesium lithium salts of both sexes, will form the platy layer thin slice of electrification in water and in the process, these
The end face of platy layer is positively charged, and level is negatively charged, due to positive and negative charge sucking action so that water and in the process lamella by
Card room structure is gradually formed, lithium metasilicate magnesium salts limellar stripping disperses to form colorless and transparent coagulant liquid in water, it can disperse
Polymer surfaces form layer protecting film, inside concrete is penetrated by silicate ion and with calcium ion in concrete reacts life
At stable material calcium silicates, hole has been filled up, has improved concrete structure compactness, and pass through Si-OH structural unit and coagulation
The calcium ions and magnesium ions on native surface react, and form stable complex compound, make concrete surface deactivation, improve concrete
Corrosion resistance, strengthen curing performance, improve well cementation the factor of merit, eliminate adjustment well interlayer alter, gas well gas channeling phenomenon.
Specific embodiment
250~350g polyacrylate dispersion, 120~160g ethylene-vinyl acetate copolymer emulsion are taken, 8~12g is spat
Temperature -20 and 8~12g styrene-butadiene copolymer, is fitted into high-speed shearing machine, after mixing with 6000~8000r/min
It is stirred 30~40min, with 200 mesh filter screen filtrations, obtains mixed emulsion, 50~80g α-alkenyl is added into mixed emulsion
Sodium sulfonate, 200~300g silicone resin polyethers lotion MPS, 5~10g hydroxyethyl cellulose, 5~10g glutaraldehyde, at 40~50 DEG C
Under water bath with thermostatic control, 20~30min is stirred with 300~400r/min, discharges after being cooled to room temperature, obtains reaction solution, take 80~100g
Flyash, be added pulverizer in crush, cross 200 meshes, by after sieving flyash powder and 100~150g lithium magnesium silicate, 200
~250g ordinary portland cement, 300~400g quartz sand, 50~60g red mud, 1~5g silicon ash, 0.5~1.0g water-reducing agent, dress
Enter in batch mixer, 20~30min is mixed with 300~400r/min, 50~80g reaction solution is added, after continuing 5~8min of stirring
Discharging, obtains oil well second interface reinforcing agent.
Take 250g polyacrylate dispersion, 120g ethylene-vinyl acetate copolymer emulsion, 8g Tween-20 and 8g styrene-
Butadiene copolymer is fitted into high-speed shearing machine after mixing, is stirred 30min with 6000r/min, is filtered with 200 mesh
Net filtration obtains mixed emulsion, and 50g α-sodium olefin sulfonate, 200g silicone resin polyethers lotion MPS, 5g hydroxyl are added into mixed emulsion
Ethyl cellulose, 5g glutaraldehyde stir 20min with 300r/min, discharge, obtain after being cooled to room temperature under 40 DEG C of waters bath with thermostatic control
Reaction solution takes 80g flyash, is added in pulverizer and crushes, and crosses 200 meshes, by the flyash powder and 100g silicic acid after sieving
Magnesium lithium, 200g ordinary portland cement, 300g quartz sand, 50g red mud, 1g silicon ash, 0.5g water-reducing agent are fitted into batch mixer, with
300r/min mixing 20min, adds 50g reaction solution, continues to discharge after stirring 5min, obtains oil well second interface reinforcing agent.
Take 300g polyacrylate dispersion, 140g ethylene-vinyl acetate copolymer emulsion, 10g Tween-20 and 10g benzene second
Alkene-butadiene copolymer, is fitted into high-speed shearing machine after mixing, is stirred 35min with 7000r/min, with 200 mesh mistakes
Strainer filtering obtains mixed emulsion, and 65g α-sodium olefin sulfonate, 250g silicone resin polyethers lotion MPS, 8g are added into mixed emulsion
Hydroxyethyl cellulose, 8g glutaraldehyde stir 25min with 350r/min, discharge after being cooled to room temperature under 45 DEG C of waters bath with thermostatic control,
Reaction solution is obtained, 90g flyash is taken, is added in pulverizer and crushes, crosses 200 meshes, by the flyash powder and 125g silicon after sieving
Sour magnesium lithium, 225g ordinary portland cement, 350g quartz sand, 55g red mud, 3g silicon ash, 0.8g water-reducing agent are fitted into batch mixer,
With 350r/min mixing 25min, 65g reaction solution is added, continues to discharge after stirring 6min, obtains oil well second interface reinforcing agent.
Take 350g polyacrylate dispersion, 160g ethylene-vinyl acetate copolymer emulsion, 12g Tween-20 and 12g benzene second
Alkene-butadiene copolymer, is fitted into high-speed shearing machine after mixing, is stirred 40min with 8000r/min, with 200 mesh mistakes
Strainer filtering obtains mixed emulsion, and 80g α-sodium olefin sulfonate, 300g silicone resin polyethers lotion MPS, 10g are added into mixed emulsion
Hydroxyethyl cellulose, 10g glutaraldehyde stir 30min with 400r/min, discharge after being cooled to room temperature under 50 DEG C of waters bath with thermostatic control,
Reaction solution is obtained, 100g flyash is taken, is added in pulverizer and crushes, crosses 200 meshes, by the flyash powder and 150g silicon after sieving
Sour magnesium lithium, 250g ordinary portland cement, 400g quartz sand, 60g red mud, 5g silicon ash, 1.0g water-reducing agent are fitted into batch mixer,
With 400r/min mixing 30min, 80g reaction solution is added, continues to discharge after stirring 8min, obtains oil well second interface reinforcing agent.
Reference examples: the Interface enhancer of Liaoning company production.
The Interface enhancer of example and reference examples is detected, specific detection is as follows:
Mechanics Performance Testing: after maintenance, sample is taken out after it is cooled to room temperature, is dried, solidified body and mud cake are observed
The solidification situation of cementation interface, drilling fluid mud cake itself and aqueous drilling fluid ontology, and test the one of different samples, second interface glue
Knotting strength.
The well cementation factor of merit: use two kinds of application methods according to the concrete condition in oil field: general permeability formations use interface
Reinforcing agent, 500~1500kg of dosage are added after completion logging by circulation ditch or exacerbation funnel, pay attention to measuring drilling fluid
Performance, drilling fluid viscosity can slightly decline, and belong to normal condition.Mud is safeguarded according to normal condition.
Specific testing result such as table 1.
1 performance characterization contrast table of table
| Detection project | Example 1 | Example 2 | Example 3 | Reference examples |
| One interface glue-joint strength/MPa | 4.245 | 4.081 | 4.921 | 0.183 |
| Second interface glue-joint strength/MPA | 5.038 | 5.059 | 5.373 | 0.401 |
| Cement the well the factor of merit/% | 76.47 | 75.89 | 73.96 | 45 |
As shown in Table 1, Interface enhancer prepared by the present invention has good interface cementing strength and using effect.
Claims (8)
1. a kind of oil well second interface reinforcing agent, which is characterized in that formed including following weight parts raw material: 80~100 parts of fine coal
Ash, 100~150 parts of lithium magnesium silicates, 200~250 parts of ordinary portland cements, 300~400 parts of quartz sands, 50~60 parts of red muds,
1~5 part of silicon ash, 0.5~1.0 part of water-reducing agent, 50~80 parts of reaction solutions.
2. a kind of oil well second interface reinforcing agent as described in claim 1, which is characterized in that the quartz sand is fineness modulus
2.6 river sand.
3. a kind of oil well second interface reinforcing agent as described in claim 1, which is characterized in that the red mud particle diameter is
0.088~0.25mm, specific gravity 2.7~2.9, bulk density 0.8~1.0.
4. a kind of oil well second interface reinforcing agent as described in claim 1, which is characterized in that the silicon ash partial size is 0.5~
1.0 μm, SiO2Content >=95%, specific surface area are 20000~24000m2/kg。
5. a kind of oil well second interface reinforcing agent as described in claim 1, which is characterized in that the water-reducing agent is that polycarboxylic acids is high
Performance water-reducing agent, water-reducing rate are 24~26%, and solid content is 20~21%.
6. a kind of oil well second interface reinforcing agent as described in claim 1, which is characterized in that the reaction solution is polyacrylic acid
Ester lotion, ethylene-vinyl acetate copolymer emulsion, Tween-20, styrene-butadiene copolymer, α-sodium olefin sulfonate, silicon tree
Rouge polyethers lotion MPS, hydroxyethyl cellulose, glutaraldehyde react at 40~50 DEG C to be made.
7. a kind of oil well second interface reinforcing agent as described in claim 1, which is characterized in that weight of material in the reaction solution
Part is 250~350 parts of polyacrylate dispersions, 120~160 parts of ethylene-vinyl acetate copolymer emulsions, 8~12 parts of tweens-
20,8~12 parts of styrene-butadiene copolymer, 50~80 parts of α-sodium olefin sulfonates, 200~300 parts of silicone resin polyethers lotions
MPS, 5~10 parts of hydroxyethyl celluloses, 5~10 parts of glutaraldehydes.
8. a kind of preparation method of oil well second interface reinforcing agent as described in claim 1~7 any one, feature exist
In specific steps are as follows:
(1) polyacrylate dispersion, ethylene-vinyl acetate copolymer emulsion, Tween-20, styrene-butadiene copolymer are taken,
It is fitted into high-speed shearing machine after mixing, 30~40min is stirred with 6000~8000r/min, with 200 mesh filter screen mistakes
Filter, obtains mixed emulsion；
(2) α-sodium olefin sulfonate, silicone resin polyethers lotion MPS, hydroxyethyl cellulose, glutaraldehyde are added into mixed emulsion,
20~30min is stirred at 40~50 DEG C, is discharged after being cooled to room temperature, is obtained reaction solution；
(3) it is filled after taking flyash to pulverize and sieve with lithium magnesium silicate, ordinary portland cement, quartz sand, red mud, silicon ash, water-reducing agent
Enter 20~30min of mixing in batch mixer, adds after reaction solution continues 5~8min of stirring and discharge, obtain oil well is enhanced with second interface
Agent.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111393172A (en) * | 2020-02-19 | 2020-07-10 | 佛山市山有海科技有限公司 | Inorganic green body reinforcing agent based on silicate system |
| CN111747719A (en) * | 2020-07-13 | 2020-10-09 | 上海百奥恒再生资源有限公司 | PRM concrete reinforcing agent |
| CN111944499A (en) * | 2019-05-17 | 2020-11-17 | 中石化石油工程技术服务有限公司 | Micro-crosslinked emulsion wall-fixing agent based on lithium silicate and ultrafine particles and preparation method thereof |
| CN112227544A (en) * | 2020-09-30 | 2021-01-15 | 深圳市国腾建材有限公司 | Waterproof construction method for wet pump coiled material |
| CN113880501A (en) * | 2020-07-01 | 2022-01-04 | 中国石油化工股份有限公司 | Broken stratum slug wall-fixing agent and preparation method and application thereof |
| CN113969153A (en) * | 2020-07-22 | 2022-01-25 | 中石化石油工程技术服务有限公司 | Micro-crosslinked emulsion wall-fixing agent based on lithium silicate-ultrafine particles and preparation method thereof |
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| CN113969153A (en) * | 2020-07-22 | 2022-01-25 | 中石化石油工程技术服务有限公司 | Micro-crosslinked emulsion wall-fixing agent based on lithium silicate-ultrafine particles and preparation method thereof |
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| CN112227544A (en) * | 2020-09-30 | 2021-01-15 | 深圳市国腾建材有限公司 | Waterproof construction method for wet pump coiled material |
| CN115304873A (en) * | 2022-08-12 | 2022-11-08 | 湖南新湘路交通科技有限公司 | Semi-flexible composite pavement interface reinforcing agent and composite pavement material |
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Application publication date: 20190101 |