CN109135699A - A kind of mortar architecture suitable for viscous crude heat extraction by steam injection - Google Patents
A kind of mortar architecture suitable for viscous crude heat extraction by steam injection Download PDFInfo
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- CN109135699A CN109135699A CN201811099913.8A CN201811099913A CN109135699A CN 109135699 A CN109135699 A CN 109135699A CN 201811099913 A CN201811099913 A CN 201811099913A CN 109135699 A CN109135699 A CN 109135699A
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- viscous crude
- steam injection
- heat extraction
- mortar architecture
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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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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of mortar architectures suitable for viscous crude heat extraction by steam injection, belong to the Technology of Heavy Oil Recovery field, it includes aluminate cement, extra material, stable high-temperature strength agent, dispersing agent, fluid loss agent, retarder, wherein, parts by weight are respectively as follows: 100 parts of the aluminate cement, 40 parts of the extra material, 25 parts of the stable high-temperature strength agent, 1 ~ 2 part of the fluid loss agent, 0.8 ~ 1.4 part of the dispersing agent, 0.3 ~ 0.4 part of the retarder；The stable high-temperature strength agent is the silica sand of 300 mesh, and the mortar architecture of the embodiment of the present invention can obviously improve the mortar architecture heat-resisting quantity and permeability of viscous crude heat extraction by steam injection, improves the comprehensive mining utilization rate of viscous crude resource.
Description
Technical field
The present invention relates to field of petroleum exploitation more particularly to a kind of mortar architectures suitable for viscous crude heat extraction by steam injection.
Background technique
Thick oil thermal extraction makes cementing concrete ring using the mining method driven with steam of neatly handling up, multicycle exploitation via steam injection
Integrality is by serious influence.During steam injection, vapor (steam) temperature is higher, and the multicycle is subjected to steam generation to pit shaft repeatedly
High temperature, just to the stability of cement sheath and compactness, more stringent requirements are proposed for this, on the one hand require Behavior of Hardened Cement Paste have it is higher
Compression strength, on the other hand require Behavior of Hardened Cement Paste have lower permeability.
Requirement of the thick oil thermal extraction to well cementing mortar architecture be at low temperature can rapid condensation, have in high temperature production
Long-term high temperature resistance.Aluminate cement has the characteristics that fast hard, high-strength, high temperature resistant.But with permeability water resistant to high temperature
The report that mud carries out oil-gas Layer transformation is less.
Summary of the invention
It is an object of the invention to aim at a kind of high heat-resisting quantity is provided, low-permeability is suitable for viscous crude steam injection
The mortar architecture of thermal recovery, to improve cementing quality.
Specific technical solution provided by the invention is as follows:
A kind of mortar architecture suitable for viscous crude heat extraction by steam injection by aluminate cement, extra material, stable high-temperature strength agent, point
Powder, fluid loss agent, retarder composition, wherein parts by weight are respectively as follows: 100 parts of aluminate cement, 40 parts of extra material, high temperature
25 parts of intensity stabilization agent, 1 ~ 2 part of fluid loss agent, 0.8 ~ 1.4 part of dispersing agent, 0.3 ~ 0.4 part of retarder；The stable high-temperature strength
Agent is the silica sand of 300 mesh.
Optionally, the extra material and the aluminate cement compound system are the basic cementitious material of cement slurry.
Optionally, the outer-penetrating agent includes at least one of flyash, slag, superfine cement.
Optionally, the fluid loss agent is J73S, for controlling fluid loss within 50 mL.
Optionally, the retarder is SR made of a kind of organic carboxyl acid and a kind of inorganic acid compounding.
Optionally, the chemical component of the flyash includes Al2O3And SiO2.
Optionally, the slag includes unformed glass mechanism.
Beneficial effects of the present invention are as follows:
The embodiment of the present invention can be used as the base gel material of mortar architecture by the way that extra material is added by aluminate cement, then
The stable high-temperature strength agent that parts by weight are 25 parts is added so that cement slurry has enough intensity in the case where high-temperature steam washes away, passes through
The silica sand of research to the heat-resisting property and partial size of cement slurry hydrated product, 300 mesh has inhibition Behavior of Hardened Cement Paste under high temperature environment
Positive effect, 1 ~ 2 part of fluid loss agent can control the fluid loss of cement slurry in 50 mL, and 0.3 ~ 0.4 part of retarder so that water
The consistency of mud system is adjustable in a long time, and the present invention can obviously improve the cement slurry suitable for viscous crude heat extraction by steam injection
The heat-resisting quantity and permeability of system improve the comprehensive mining utilization rate of viscous crude resource.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be made below further detailed
Thin description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, all other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
Embodiment 1:
Weigh 100 g of aluminate cement, 40 g of slag, 25 g of silica sand of 300 mesh, 1.5 g of fluid loss agent (J73S), dispersing agent
(SXY) 0.8 ~ 1.4 g, 0.3 ~ 0.4 g of retarder (SR) are added in corrugation blender, appropriate tap water, high-speed stirred 45 are added
Turn to stir at low speed after s, raises thickening in the normal pressure for carrying out 20 min, that is, be prepared into a kind of cement suitable for viscous crude heat extraction by steam injection
Slurry system.
Outer-penetrating agent includes at least one of flyash, slag, superfine cement.Wherein:
Slag includes unformed glass mechanism, and vitreum content is more, and it is big that structure is in higher-energy state, potential activity, can be big
Amplitude improves the intensity of mortar architecture, significantly improves the durability of cement, and the freezing corrosion of mortar architecture can be improved
Ability.
The chemical component of flyash includes Al2O3And SiO2.Fine coal gray density is generally 1.8 ~ 2.6g/cm3, loose volume weight
For 600 ~ 1000 Kg/m3, compacting capacity is 1 ~ 1.4 Kg/m3.Flyash mixes in mortar architecture, and cement slurry can be improved
Mobility reduces the water consumption of cement slurry.
The particle size of superfine cement is ultra-fine, and manufactured slurry has good mobility, can penetrate into cement granules
Between gap, improve the density and intensity of Behavior of Hardened Cement Paste.
At a certain temperature, with the increase of fluid loss agent J73S dosage, cement slurry water loss amount is presented fluid loss agent J73S
The trend reduced out；In the case where fluid loss agent J73S reaches a certain amount of situation, the raising for temperature of falling asleep, the dehydration quantitative change of cement slurry
Greatly, but the dosage by increasing fluid loss agent J73S opens supervision fluid loss, and fluid loss is can be controlled within 50 mL.
Retarder SR and aluminate cement have good compatibility, development to cement slurry compression strength and to cement slurry
The influence of high temperature resistance is smaller.At a certain temperature, with the increase of retarder SR, what the thickening time linearly increased becomes
The thickening time can be adjusted in gesture, the dosage by changing retarder SR.It is as the temperature rises, thick under certain dosage
The trend that the change time linearly reduces substantially, showing retarder SR, the thickening time is adjustable at different temperatures, and the scene of ensure that is applied
The adjustability of thickening time in working hour.
The present invention can be used as the base gel material of mortar architecture by the way that extra material is added by aluminate cement, then plus
Enter the stable high-temperature strength agent that parts by weight are 25 parts so that cement slurry has enough intensity in the case where high-temperature steam washes away.By right
The silica sand of the research of cement slurry hydrated product heat-resisting property and partial size, 300 mesh has actively inhibition Behavior of Hardened Cement Paste under high temperature environment
Effect.1 ~ 2 part of fluid loss agent can control the fluid loss of cement slurry in 50 mL, and 0.3 ~ 0.4 part of retarder so that cement slurry
The consistency of system is adjustable in a long time.The present invention can obviously improve resistance to suitable for the mortar architecture of viscous crude heat extraction by steam injection
High temperatures and permeability improves the comprehensive mining utilization rate of viscous crude resource.
Embodiment 2
The mortar architecture suitable for viscous crude heat extraction by steam injection of the embodiment of the present invention includes the raw material of following weight fraction ratio:
100 parts of aluminate cement, 40 parts of extra material, 25 parts of stable high-temperature strength agent, 1.5 parts of fluid loss agent, 1 part of dispersing agent, retarder
0.35 part, wherein stable high-temperature strength agent is the silica sand of 300 mesh, outer-penetrating agent include flyash, slag, in superfine cement extremely
Few one kind, fluid loss agent J73S, within 50 mL, retarder to be a kind of organic carboxyl acid and one kind by fluid loss control
SR made of inorganic acid compounding, the chemical component of flyash includes Al2O3And SiO2.
The mortar architecture of the embodiment of the present invention can be used as mortar architecture by the way that extra material is added to aluminate cement
Base gel material adds the stable high-temperature strength agent that parts by weight are 25 parts so that cement slurry has in the case where high-temperature steam washes away
Enough intensity, by the research of heat-resisting property and partial size to cement slurry hydrated product, the silica sand of 300 mesh is to inhibition Behavior of Hardened Cement Paste
Play the role of under high temperature environment it is positive, 1.5 parts of fluid loss agent can by the fluid loss of cement slurry control in 50 mL, retarder
0.35 part so that the consistency of mortar architecture is adjustable in a long time, the present invention can obviously improve suitable for thick oil filling steam heat
The heat-resisting quantity and permeability for the mortar architecture adopted improve the comprehensive mining utilization rate of viscous crude resource.
Obviously, those skilled in the art can carry out various modification and variations without departing from this hair to the embodiment of the present invention
The spirit and scope of bright embodiment.In this way, if these modifications and variations of the embodiment of the present invention belong to the claims in the present invention
And its within the scope of equivalent technologies, then the present invention is also intended to include these modifications and variations.
Claims (7)
1. a kind of mortar architecture suitable for viscous crude heat extraction by steam injection, which is characterized in that including aluminate cement, extra material,
Stable high-temperature strength agent, dispersing agent, fluid loss agent, retarder, wherein parts by weight are respectively as follows: the aluminate cement 100
Part, 40 parts of the extra material, 25 parts of the stable high-temperature strength agent, 1 ~ 2 part of the fluid loss agent, the dispersing agent 0.8 ~ 1.4
Part, 0.3 ~ 0.4 part of the retarder；The stable high-temperature strength agent is the silica sand of 300 mesh.
2. the mortar architecture according to claim 1 suitable for viscous crude heat extraction by steam injection, which is characterized in that mixed outside described
Material and the aluminate cement compound system are basic cementitious material.
3. the mortar architecture according to claim 1 suitable for viscous crude heat extraction by steam injection, which is characterized in that described outer
Mixing agent includes at least one of flyash, slag, superfine cement.
4. the mortar architecture according to claim 1 suitable for viscous crude heat extraction by steam injection, which is characterized in that the drop is lost
Aqua is J73S, for controlling fluid loss within 50 mL.
5. the mortar architecture according to claim 1 suitable for viscous crude heat extraction by steam injection, which is characterized in that the slow setting
Agent is SR made of a kind of organic carboxyl acid and a kind of inorganic acid compounding.
6. the mortar architecture according to claim 3 suitable for viscous crude heat extraction by steam injection, which is characterized in that the fine coal
The chemical component of ash includes Al2O3And SiO2.
7. the mortar architecture according to claim 3 suitable for viscous crude heat extraction by steam injection, which is characterized in that the slag
Including unformed glass mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811099913.8A CN109135699A (en) | 2018-09-20 | 2018-09-20 | A kind of mortar architecture suitable for viscous crude heat extraction by steam injection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811099913.8A CN109135699A (en) | 2018-09-20 | 2018-09-20 | A kind of mortar architecture suitable for viscous crude heat extraction by steam injection |
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| CN109135699A true CN109135699A (en) | 2019-01-04 |
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| CN201811099913.8A Pending CN109135699A (en) | 2018-09-20 | 2018-09-20 | A kind of mortar architecture suitable for viscous crude heat extraction by steam injection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112410000A (en) * | 2019-08-21 | 2021-02-26 | 中国石油天然气股份有限公司 | Aluminate cement paste, preparation method and application |
| CN115353330A (en) * | 2022-04-11 | 2022-11-18 | 中国石油大学(华东) | Ultra-high temperature resistant well cementation cement system with excellent pumping performance and preparation method thereof |
-
2018
- 2018-09-20 CN CN201811099913.8A patent/CN109135699A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112410000A (en) * | 2019-08-21 | 2021-02-26 | 中国石油天然气股份有限公司 | Aluminate cement paste, preparation method and application |
| CN115353330A (en) * | 2022-04-11 | 2022-11-18 | 中国石油大学(华东) | Ultra-high temperature resistant well cementation cement system with excellent pumping performance and preparation method thereof |
| CN115353330B (en) * | 2022-04-11 | 2023-08-22 | 中国石油大学(华东) | Ultra-high temperature resistant well cementation cement system with excellent pumping performance and preparation method thereof |
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Application publication date: 20190104 |
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