CN105802596B - A kind of early strong low hydration heat mortar architecture suitable for deep water shallow cementing - Google Patents
A kind of early strong low hydration heat mortar architecture suitable for deep water shallow cementing Download PDFInfo
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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
- C09K8/487—Fluid loss control additives; Additives for reducing or preventing circulation loss
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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
- C04B28/06—Aluminous cements
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Abstract
The invention discloses one kind being used for low hydration heat well cementing mortar architecture, and system includes following component：100 parts of cement, 5 ~ 10 parts of decalescence material, 10 ~ 30 parts of density palliative, 8 ~ 15 parts of suspension material, 0.5 ~ 1 part of drag reducer, 0.3 ~ 0.55 part of retarder, 0.7 ~ 1 part of fluid loss agent, 0.7 ~ 1 part of antifoaming agent, 0.06 ~ 0.1 part of early strength agent, 68.2 ~ 82.3 parts of water.The mortar architecture of the present invention has good early powerful feature at low temperature, and hydration heat amount is small, and thickening performance, mobile performance, settlement stability performance are good, has that short transient time characteristic, fluid loss is smaller meets site operation requirement.The system can solve the surface casing cementing of deep water hydrate layer, can save activity duration and cost, and technical support is provided for the petroleum resources exploitation of deep water hydrate layer.
Description
Technical field
The present invention relates to a kind of early strong low hydration heat mortar architectures suitable for deep water shallow cementing, are suitable for deep water
Low temperature, deep water hydrate layer well cementing operation, it can also be used to which the permafrost band of land high latitude area is shallow, surface layer section well cementation, belongs to
In oil gas well cementing operation engineering field.
Background technology
As the whole world is for the increase of energy demand, people start to carry out resource exploitation to extremely challenging environment, than
Such as：Deep water sea area, high pressure-temperature stratum etc..In recent years, (depth of water is more than for deep water (depth of water is in 400~1500m), ultra-deep-water
1500m) oil-gas exploration becomes the focus of the developed countries such as America and Europe exploitation with exploitation.1990-1999, the huge oil that the whole world is found
The 36% of field reserves is distributed in land, and 64% is distributed in marine site, and wherein shallow sea accounts for 44%, and profundal zone accounts for 20%.Cut-off 2001
Bottom is more than in 500m depth of waters marine site in global 18,6 continent basin, has had found the deep water hydrocarbon of 79.2 hundred million t oil equivalents.Mesh
Before, the total amount of global profundal zone operation oil gas field only accounts for the 25% of exploitation gross reserves, wherein with Brazil, the Gulf of Mexico, Xi Feiju
It is more.It is counted 2000~2005 years according to Douglas-Westwood Ltd, West Africa has 17 deep water hydrocarbon fields to go into operation；Brazil 2000
Oil daily output nearly 17.8 × 104T, wherein 70% deep water sea area from 400~2000m, its deep water hydrocarbon field daily output in 2005
Up to 25.3 × 104T, to make state's oil reach self-supporting.The northern Qiong-dongnan Basin at China South Sea, Zhujiangkou Basin,
13 Mesozoic Cenozoic Sediment Basins of Southwest Taiwan Basin and southern SouthChina Sea Nansha waters all have good resource potential.Preliminary estimation,
THE NORTHERN SLOPE OF SOUTH CHINA SEA profundal zone petroleum resource cities are up to 19.0 × 108T, natural gas resources are up to 2.4 × 1012m3.Early in " 11
During five ", China brings sth. into the plan the exploitation of South China Sea Deep Water petroleum resources.
Condition existing for gas hydrates is：(1) temperature is not less than 10MPa less than 10 DEG C, pressure；(2) natural gas
And water-bearing media；(3) advantageous reservoir space, such as cryogenic freezing layer, deep water ocean shallow stratum.And the ring of deep water ocean
Border and geological conditions gas hydrates provide sufficient condition to containing for seabed shallow stratum.For this purpose, containing in deep water
There is also a large amount of gas hydrates while abundant petroleum resources.It is estimated that in global deep water gas hydrates
More than the methane gas containing 6.4 trillion tons.Gas hydrates exist in solid form, contain a large amount of methane gas.Generation
Within the scope of boundary, the methane gas being present in gas hydrates about contains 100,000 tons of carbons.This, which is equivalent on the earth, changes
2 times of stone fuel phosphorus content.Gas hydrates have cagelike structure, and the molecule as main body can be according to certain space structure
Arrangement, can fetter one or more guest molecule in each cagelike structure.The mean molecule group of gas hydrates becomes
1mol methane gas and 5.75mol hydrones.In normal conditions, when gas hydrates because destabilizing factor is decomposed
When, 1L gas hydrates will produce 70~180L methane gas.
The complicated geological environment of deep water shallow-layer brings many challenges to well cementing operation, as low temperature (on 4 DEG C of left sides
The right side, minimum up to 0 DEG C), cause cement early strength is low cannot meet the needs of quickly solidifying, is also easy to produce under high formation pressure
Channelling problem, while extending well construction period, increasing shaft building cost；Low formation fracture pressure, under conventional density cement slurry density easily
Pressure leakage stratum, pollution of marine environment；Exist while high pressure and low formation fracture pressure, causes cementing slurry density refractory to adjust
It is whole, and low weight cement slurry is unable to quick-hardening；Contain hydrate water under the requirement that cement fast hydration condenses in stratum
It closes object and decomposes and discharge a large amount of natural gases, cause borehole diameter to expand, generate has channeling, influence the problems such as mud replacement efficiency, finally
Cementing quality is impacted.In addition, the decomposition of gas hydrates can also cause abnormal high pressure, blowout even well kick thing is generated
Therefore.The generation that the accidents such as Haiti earthquake, tsunami can be also induced when serious, can cause the loss that can not be retrieved, for deep water cementing
It is prodigious security risk.However the presence of hydrate but never causes enough attention in deep water stratum.
Cement system currently used for deep water cementing has (1) G class g cements to add reinforcing material system, and Sun Xiaojie et al. leads to
Development is crossed to mitigate reinforcing material S1 and preferably go out efficient complex accelerator CA-5S raisings portland cement aquation energy at low temperature
Power promotes the development of Behavior of Hardened Cement Paste early strength, and preferably BXF-500S, can only but the density of the system is minimum as fluid loss agent
Reach 1.40g/cm3, and only the early strong effect in 30 DEG C of environment is preferable for system, 4 DEG C of phases of temperature in use and deep water mud line temperature
Difference is larger, in addition, the cement mortar does not account for hydration heat, can not ensure the stability of deep water hydrate；(2) granular-grade water distribution
Mud system, the DeepCRETE that Schlumberger develops is by grain composition principle and not slow setting dispersant and coagulant is added
Shorten cement mortar curing time, in 18 DEG C of density 1.50g/cm3Under conditions of the mortar architecture to show good morning special by force
Property, but the temperature in use of the mortar architecture and density and 4 DEG C or so of deepwater environment mud line temperature and low formation fracture pressure
To cement slurry density 1.20g/cm3The requirement of left and right has bigger difference, and the cement mortar does not account for hydration heat to natural
The influence of gas hydrate stability；(3) high alumina cement slurry system, Boncan V G et al. research alumina silicate mortar architecture to
Active silicic acid aluminium is added in quick-hardening cement, the coagulant such as solidifying gypsum, polyvinyl alcohol fluid loss agent, calcium chloride soon, the water is added
Mud can quickly develop static gel strength, but the mortar architecture does not account for the hydration heat phase of high alumina cement slurry
To higher, research shows that the temperature that high alumina cement slurry hydration heat generates in 20 DEG C of closed environments can reach 100 DEG C or more,
This is extremely disadvantageous no more than being stabilized for 18 DEG C of gas hydrates to being stabilized temperature under high pressure；(4) foamed cement
Slurry system, the system can use G class g cements or aluminate cement, wherein Raghava develop based on high alumina cement, be filled with
Nitrogen, sodium lignin sulfonate are retarder, and calcium chloride is dispersant as coagulant, poly- winter propylhomoserin, make density 1.32~
1.44g/cm3Cement mortar, 10 DEG C conserve 24 hours, compression strength highest 2.64MPa, the early epistasis energy which shows
It is not fine, the high daily rental lsp request cement mortar low-temperature high-early strength of offshore rig equipment is functional；(5) parget water mud is coagulated soon,
The cement mortar has preferable early powerful feature in 15 DEG C or so of environment, but the density of cement mortar is in 1.50g/cm3Left and right,
It is higher applied to deep water cementing system density, and the early epistasis of parget water mud is coagulated in the environment of 4 DEG C or so of mud line temperature soon
Can be poor, it should not be used in deep water cementing.All there is the defect of itself in above-mentioned several cement mortars applied to deep water cementing, and
These cement mortars all do not account for destruction of the hydration reaction heat release to the stability of gas hydrates.
It cements the well these existing problems for deep water hydrate layer, develops that strength development under a kind of low temperature is fast, aquation is put
Heat is few, low density deep water hydrate layer well cementing mortar architecture has great importance for deep water hydrocarbon exploitation.
Invention content：
Present invention seek to address that one of above-mentioned defect existing in the prior art, provides a kind of suitable for deep water shallow cementing
Early strong low hydration heat mortar architecture.
The specific technical solution that the present invention solves the technical problem is：
The present invention provides a kind of early strong low hydration heat mortar architecture suitable for deep water shallow cementing, the formula systems
System includes the component of following parts by weight：
Silicate-aluminate complex cement (mass ratio 1:4~5:5) 100 parts, 5~10 parts of decalescence material, density subtracts
Light 10~30 parts of material；
10~15 parts of suspension material；
0.06~0.1 part of early strength agent；
0.5~1 part of drag reducer；
0.3~0.55 part of retarder；
0.7~1 part of fluid loss agent；
0.7~1 part of antifoaming agent
68.2~82.3 parts of water.
Preferably, the decalescence material is paraffin microcapsule, and capsule core material is paraffin, and shell material is polymethylacrylic acid
Methyl esters, and contain nano silicon dioxide as dispersant.
Preferably, the paraffin melting point is 40 DEG C.
Preferably, the preparation method of the paraffin microcapsule is：By the bright olefin(e) acid formicester of methyl, benzoyl peroxide, diethyl
Alkenyl benzene, melt paraffin, which are uniformly mixed, forms oil phase, then nano silicon dioxide and deionized water are stirred ten minutes in 75 DEG C
Form water phase；Above-mentioned oil phase is slowly imported in water phase, 85 DEG C of heating water baths, 2000 revs/min of high-speed stirreds can be made for 2 hours
Obtain paraffin microcapsule；The bright olefin(e) acid formicester of wherein described methyl, benzoyl peroxide, divinylbenzene, paraffin, nanometer titanium dioxide
Silicon, water mass ratio be 100:3:0.5:100:16:1000.
Preferably, the density lightening material is hollow glass floating bead, model Y-12000, real density 0.80g/cm3,
Compression strength 82.75MPa, 35 μm of median diameter originate from Sinosteel Maanshan Institute of Mining Research, and model Y-6000 is true close
Spend 0.46g/cm3, compression strength 41.34MPa, 45 μm of median diameter originates from Sinosteel Maanshan Institute of Mining Research；
Preferably, the suspension material is micro- silicon, and granularity is 400~500 mesh；
Preferably, the early strength agent is one kind in triethanolamine, lithium chloride；
Preferably, the drag reducer is sulfonation aldoketones drag reducer；
Preferably, the retarder is one or more of citric acid, boric acid, aluminum sulfate, sodium tetraborate；
Preferably, the fluid loss agent is AMPS class fluid loss agents；
Preferably, the antifoaming agent is tbp.
Preferably, the cement is silicate-aluminate hydrated blended cement system (mass ratio 1:4~5:5), mineral composition
It is with mass percent：Aluminium oxide 25.3%~46.9%, calcium oxide 39.2%~44.8%, silica 6.5%~
21.7%, iron oxide 1.9%~2.7%, titanium oxide 1.2%~2.3%, sulfur trioxide 1.1%~2.1%, magnesia 1.0%
~1.3%, surplus is trace element.
The preparation method of above-mentioned low hydration heat deep-water low-temperature low-density degree high-early (strength) cement system, it is first that cement, paraffin is micro-
Capsule, floating bead, micro- silicon carry out it is dry-mixed, then will be dry-mixed after system and water it is with slurry according to the progress of API 10B-3-2004 standards.
The present invention provides the paraffin microcapsule of some strength, favorable dispersibility using special component and process exploitation,
Then paraffin microcapsule is added in cement system, while introduces micro- silicon in cement, prevent the heavy of paraffin microcapsule and floating bead
Drop.Paraffin melting point in paraffin microcapsule is 40 DEG C, and the heat of absorption system releasing is capable of in system hydration reaction superheating process
Amount.When system hydration temperature is more than paraffin melting point, transformation of the solid phase to liquid phase can occur for paraffin, and the latent heat of phase change of paraffin is very
Greatly.Therefore paraffin microcapsule can absorb a large amount of heat in system hydration reaction, reduce the Wen Sheng of cement system reaction.When
When system temperature is less than paraffin melting point, paraffin can discharge latent heat of phase change, maintenance system temperature, the hydration reaction speed of guarantee system again
Rate.In addition the density of paraffin microcapsule is very low, can serve as the effect of density palliative.
The cement system of the present invention is the mixed system of G grades of oil well cementing cement-aluminate cements, and the introducing of aluminate can
To make up the G class g cements excessively slow disadvantage of hydration reaction rate at low temperature, early strength is improved.The introducing of G class g cements can make
For whole system on the basis of maintaining early strength, hydration heat is less than fine aluminium acid salt cement system.
The preferred sulfonation aldoketones drag reducer of the present invention adjusts the rheological property of cement mortar as dispersant；Preferred boric acid conduct
Retarder adjusts the thickening performance of cement mortar, and cement mortar is made to have enough thickening times to meet the requirement of site operation；It is excellent
The early strength agent of triethanolamine or a water lithium chloride as mortar architecture is selected, improves the early hydration ability of cement mortar to obtain
Higher early strength shortens the construction time and increases economic efficiency；It is preferred that AMPS class fluid loss agents adjust the fluid loss characteristics of cement mortar
Can, ensure the relatively low success rate for improving construction of cement slurry water loss amount；It is preferred that tbp is reduced as antifoaming agent in Behavior of Hardened Cement Paste
The quantity of bubble ensures the intensity of Behavior of Hardened Cement Paste.
The early strong cementing cement system of a kind of low hydration heat deep-water low-temperature low-density degree of the present invention has the characteristics that：
(1) there is good early powerful feature under low temperature, still there is higher early strength at 7 DEG C；(2) hydration heat amount is small,
Ensure effectively to control hydration reaction thermal discharge on the basis of early strong intensity, it is big to overcome conventional early strong system hydration heat amount
Disadvantage is conducive to improve hydrate layer cementing quality, reduces well cementation accident.(3) cement mortar thickening performance, mobile performance, sedimentation
Stability is good, has that short transient time characteristic, fluid loss is smaller meets site operation requirement；(4) system can solve depth
The surface casing cementing of water hydrate layer can be saved activity duration and cost, be provided for the petroleum resources exploitation of deep water hydrate layer
Technical support.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
Fig. 1 is the micrograph (× 100) of the phase change paraffin microcapsules of the present invention；
Fig. 2 is the micrograph (× 220) of the phase change paraffin microcapsules of the present invention；
Fig. 3 is low hydration heat deep water cementing cement system hydration reaction test temperature curve graph for 24 hours.
Specific implementation mode
Below in conjunction with specific example, the present invention is described in detail.
Reference examples 1
Cement-slurry method：Win 100 parts of Weihe River G class g cements, 44 parts of water.
Preparation method：Oil-well cement and water are prepared into cement mortar according to API 10B-3-2004 oil-well cement test methods.
Embodiment 1
Cement-slurry method：100 parts of cement (30 parts of victory Weihe River G class g cements and 70 parts of essence CA-50 aluminate cements), early strength agent
0.06 part of triethanolamine, retarder (0.4 part of+0.3 part of boric acid of+1 part of citric acid aluminum sulfate), 0.3 part of sulfonation aldoketones drag reducer,
44 parts of water.
Wherein：30 parts of mineral compositions for winning+70 parts of essence CA-50 aluminate cements of Weihe River G class g cements and mass percent are：
Aluminium oxide 42.6%, calcium oxide 40.3%, silica 9.5%, iron oxide 2.1%, titanium oxide 2%, sulfur trioxide 1.3%,
Magnesia 1.1%, surplus are trace element.
Preparation method：Early strength agent, retarder are dissolved in water, then by obtained aqueous solution and cement according to API 10B-3-
2004 oil-well cement test methods prepare cement mortar.
Embodiment 2
Cement-slurry method：100 parts of cement (50 parts of victory Weihe River G class g cements and 50 parts of essence CA-50 aluminate cements), embodiment
85 parts of the hydrophily paraffin microcapsules prepared, 0.10 part of early strength agent triethanolamine, 0.35 part of retarder boric acid, the micro- silicon of suspension material
10 parts, 0.5 part of sulfonation aldoketones drag reducer, 0.5 part of AMPS classes fluid loss agent, 0.5 part of antifoaming agent tbp, water 58.2
Part.
Preparation method：Cement, phase-change material and floating bead is dry-mixed, early strength agent, retarder are dissolved in water, then by gained water
Solution prepares cement mortar with dry mixing cement according to API 10B-3-2004 oil-well cement test methods.
Embodiment 3
100 parts of cement (50 parts of victory Weihe River G class g cements and 50 parts of essence CA-50 aluminate cements), embodiment 8 prepare hydrophilic
10 parts of paraffin microcapsule of property, 10 parts of Y-6000 hollow glass floating bead, 0.06 part of early strength agent triethanolamine, retarder boric acid 0.35
Part, 10 parts of the micro- silicon of suspension material, 0.5 part of sulfonation aldoketones drag reducer, 0.7 part of AMPS classes fluid loss agent, antifoaming agent tricresyl phosphate fourth
0.7 part of fat, 68.6 parts of water.Experimental result is shown in Table 1.
Embodiment 4
100 parts of cement (20 parts of victory Weihe River G class g cements and 80 parts of essence CA-50 aluminate cements), embodiment 8 prepare hydrophilic
Property 5 parts of paraffin microcapsule, 23.3 parts of Y-6000 floating beads, 0.10 part of early strength agent triethanolamine, 0.45 part of retarder sodium tetraborate, hang
12 parts of the micro- silicon of floating material, 0.5 part of sulfonation aldoketones drag reducer, 0.7 part of AMPS classes fluid loss agent, antifoaming agent tbp 0.7
Part, 70.2 parts of water.Experimental result is shown in Table 1.
Embodiment 5
100 parts of cement (20 parts of victory Weihe River G class g cements and 80 parts of essence CA-50 aluminate cements), embodiment 8 prepare hydrophilic
10 parts of paraffin microcapsule of property, 30 parts of Y-6000 glass pearls, 0.06 part of early strength agent triethanolamine, retarder sodium tetraborate 0.55
Part, 15 parts of the micro- silicon of suspension material, 1 part of sulfonation aldoketones drag reducer, 1 part of AMPS classes fluid loss agent, antifoaming agent tbp 1
Part, 68.2 parts of water.Experimental result is shown in Table 1.
Embodiment 6
100 parts of cement (50 parts of victory Weihe River G class g cements and 50 parts of essence CA-50 aluminate cements), embodiment 8 prepare hydrophilic
Property 5 parts of paraffin microcapsule, 25 parts of Y-6000 glass pearls, 0.06 part of early strength agent triethanolamine, 0.35 part of retarder boric acid, suspend
15 parts of the micro- silicon of material, 1 part of sulfonation aldoketones drag reducer, 1 part of AMPS classes fluid loss agent, 1 part of antifoaming agent tbp, water 82.3
Part.Experimental result is shown in Table 1.
Embodiment 7
100 parts of cement (50 parts of victory Weihe River G class g cements and 50 parts of essence CA-50 aluminate cements), embodiment 8 prepare hydrophilic
Property 10 parts of paraffin microcapsule, 25 parts of Y-12000 glass pearls, 0.06 part of early strength agent triethanolamine, 0.35 part of retarder boric acid, hang
10 parts of the micro- silicon of floating material, 1 part of sulfonation aldoketones drag reducer, 1 part of AMPS classes fluid loss agent, 1 part of antifoaming agent tbp, water
82.3 parts.Experimental result is shown in Table 1.
Test the density of cement mortar, syneresis rate, fluidity, API fluid losses, thickening obtained by comparative example 1, embodiment 1-7
Time, test result are as shown in table 1.According to the intensity test result such as table 1 of Behavior of Hardened Cement Paste obtained by comparative example 1, embodiment 1-7
It is shown.
Table 1
Test condition：7 DEG C, 10MPa.
Mix phase-change material and floating bead, 1 day compression strength of Behavior of Hardened Cement Paste is in reduction trend, this be primarily due to phase-change material and
Floating bead itself does not have gelling ability, but influences less compression strength because of the anti-of the phase-change material and floating bead itself being added
Compressive Strength is higher.The phase-change material used in this patent has higher intensity and good compatibility by package processing, right
The thickening performance and intensity effect of system are little.
2,4,6 exotherm of embodiment is similar, and 3,5,7 exotherm of embodiment is similar.1,4,7 hydration heat of embodiment is bent
Line test condition：20 DEG C, 0.1MPa, test results are shown in figure 3.
Phase-change material is not incorporated into embodiment 1, therefore 1 day hydration heat is higher, hydration heat peak temperature reaches
95 DEG C, it is higher than 82 DEG C of reference examples.The hydration heat peak temperature of the embodiment of incorporation phase-change material, which has, to be significantly reduced
Total heat of hydration heat temperature and hydration heat.It mixes 5 parts of phase-change materials and 10 parts of phase-change materials can be by system
Hydration heat peak temperature is reduced to 60 DEG C or so, and the more hydration heat temperature peaks of phase-change material and aquation that mix are put
Heat is lower.This is because phase-change material can absorb the heat of cement system releasing in hydration reaction, when system temperature reaches
It can undergo phase transition to absorb amount of heat to phase-change material when phase-change material phase transition temperature, reduce hydration reaction temperature peak
It increases.The incorporation of phase-change material can substantially reduce the heat of system hydration reaction releasing, for maintaining gas hydrates layer
The stability of hydrate is highly beneficial.
Embodiment 8
A kind of preparation method of hydrophily paraffin microcapsule, includes the following steps：By the bright olefin(e) acid formicester of methyl, benzoyl peroxide
Formyl, divinylbenzene, melt paraffin, which are uniformly mixed, forms oil phase, then nano silicon dioxide is low in 75 DEG C with deionized water
Speed stirring is very bell at water phase；Above-mentioned oil phase is slowly imported in water phase, 85 DEG C of heating water baths, 2000 revs/min of high-speed stirrings
Mix the paraffin microballoon that can be prepared by the present invention for 2 hours；The bright olefin(e) acid formicester of wherein described methyl, benzoyl peroxide, divinyl
Benzene, paraffin, nano silicon dioxide, water mass ratio be 100:3:0.5:100:16:1000.Its micrograph is as shown in Figure 1, 2.
Although an embodiment of the present invention has been shown and described it can be managed with comparative example, those skilled in the art
Solution：Without departing from the principle and spirit of the present invention can to these embodiments carry out it is a variety of variation, modification, replace and
Modification, the scope of the present invention are limited by claim and its equivalent.
Claims (1)
1. a kind of low hydration heat mortar architecture by force of morning, it is characterised in that：It is grouped as by the group of following parts by weight：Cement 100
Part, 5 parts of hydrophily paraffin microcapsule, 23.3 parts of Y-6000 floating beads, 0.10 part of early strength agent triethanolamine, retarder sodium tetraborate
0.45 part, 12 parts of the micro- silicon of suspension material, 0.5 part of sulfonation aldoketones drag reducer, 0.7 part of AMPS classes fluid loss agent, antifoaming agent phosphoric acid
0.7 part of tri butyl ester, 70.2 parts of water；
Or it is grouped as by the group of following parts by weight：100 parts of cement, 10 parts of hydrophily paraffin microcapsule, Y-6000 glass pearls 30
Part, 0.06 part of early strength agent triethanolamine, 0.55 part of retarder sodium tetraborate, 15 parts of the micro- silicon of suspension material, sulfonation aldoketones drag reduction
1 part of agent, 1 part of AMPS classes fluid loss agent, 1 part of antifoaming agent tbp, 68.2 parts of water；
100 parts of cement is made of 20 parts of victory Weihe River G class g cements and 80 parts of essence CA-50 aluminate cements；
The preparation method of the hydrophily paraffin microcapsule is：By methyl methacrylate, benzoyl peroxide, divinyl
Benzene, melt paraffin, which are uniformly mixed, forms oil phase, then by nano silicon dioxide and deionized water stirred in 75 DEG C it is very bell at
Water phase；Above-mentioned oil phase is slowly imported in water phase, 85 DEG C of heating water baths, 2000 revs/min of high-speed stirreds can be prepared by stone in 2 hours
Wax microcapsules；The wherein described methyl methacrylate, benzoyl peroxide, divinylbenzene, paraffin, nano silicon dioxide, water
Mass ratio be 100:3:0.5:100:16:1000.
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| CN106634901A (en) * | 2016-10-25 | 2017-05-10 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Vitrified micro-bubble cement paste system and preparation method and application thereof |
| CN106947447B (en) * | 2017-03-20 | 2019-05-10 | 西南石油大学 | Thermo-sensitive expanding microcapsules agent for anti gassing-out and channeling control cement slurry system |
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