CN105255464A - High-temperature-resistant cementing material system - Google Patents
High-temperature-resistant cementing material system Download PDFInfo
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- CN105255464A CN105255464A CN201510788673.2A CN201510788673A CN105255464A CN 105255464 A CN105255464 A CN 105255464A CN 201510788673 A CN201510788673 A CN 201510788673A CN 105255464 A CN105255464 A CN 105255464A
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- 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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Abstract
The invention provides a high-temperature-resistant cementing material system which mainly solves the problems that in existing oil well cement, the high-temperature strength is declined and the high-temperature mechanical stability is poor and is suitable for the field of high-temperature cementing of oil gas wells. The high-temperature-resistant cementing material system is prepared from, by mass, 28-67 parts of SiO2, 10-40 parts of expanded perlite, 4.7-18 parts of wollastonite, 19-48 parts of Ca(OH)2, 2.8-9.2 parts of M2CO3, 2.5-9.7 parts of aluminum silicate and 4.3-18 parts of sodium aluminate. The high-temperature-resistant cementing material system can meet well cementing operation in deep formation under the high-temperature high-pressure conditions and has the advantages of being convenient to construct on site and low in cost; in addition, compared with the process of producing oil well cement, the CO2 emission load can be significantly decreased, and the application prospect is wide.
Description
Technical field
The present invention relates to the high temperature resistant well cementing material system of a kind of Oil/gas Well, particularly relate to a kind of Deep Oil-gas well section the high temperature resistant well cementing material system that is suitable for.
Background technology
China's Deep Oil And Gas Exploration aboundresources, in the Paleozoic erathom, marine site of east China, the hydrocarbon resources in the deep such as upper palaeozoic of the Lower Paleozoic strata of the Paleozoic erathom, particularly Tarim Basin of Paleozoic erathom, southern Lower Paleozoic strata, the Northwest, the Junggar Basin-Caidamu Basin-Hexi Corridor Region and the Northeast is very abundant.Therefore, the exploratory development accelerating Deep Oil And Gas Exploration resource has become the vital task of China's oil and gas development.Along with the exploratory development of Deep Oil And Gas Exploration resource, drilling depth is more and more darker, and oil gas well cementing operation is faced with more and more outstanding high temperature well cementation problem.
Well cementation is exactly process grout being injected annular space between the borehole wall and sleeve pipe, and object is Inter-zonal packing and support and protective casing.The quality of cementing quality directly decides the work-ing life of Oil/gas Well, and high-quality well cementing operation is the indispensable prerequisite of oil and gas resource security, economy, high-efficiency mining.
The material mainly silicates oil well cement of current oil gas well cementing operation, but oil well cement (temperature is more than 110 DEG C) also exist strength retrogression under the high temperature conditions, rate of permeation sharply increases phenomenon, conventional reduce CaO and SiO in oil well cement by admixture in cement 30 ~ 40% silica sand
2(C/S) mol ratio, weakens the hot strength decline of hardened oilwell cement.But under higher temperature environment, oil well cement adds silica sand system and still there will be strength retrogression, even cracking phenomena, stratum packing is caused to be lost efficacy, the safety that serious threat Oil/gas Well is produced.For deep layer high temperature oil gas well cementing, researching and developing high temperature resistant well cementing material has great meaning.
Summary of the invention
The object of this invention is to provide a kind of environment deep formation High Temperature High Pressure can be utilized, raw hydrothermal synthesis reaction is issued at high-temperature and high-pressure conditions by the oxygenatedchemicalss such as different silicon, calcium, aluminium and water solvent, generation has good ultimate compression strength, resistant to elevated temperatures silicates, Aluminosilicates agglutinate, thus the Novel cementing material system of packing that Deep Oil-gas well is effectively cemented the well, to solve the deficiency of current oil well cement high thermal resistance difference.
For reaching above technical purpose, the invention provides following technical scheme.
A kind of high temperature resistant well cementing material system, is made up of according to its mass fraction following component:
SiO
228 ~ 67 parts;
Pearlstone 10 ~ 40 parts;
Wollastonite 4.7 ~ 18 parts;
Ca (OH)
219 ~ 48 parts;
M
2cO
32.8 ~ 9.2 parts;
Pure aluminium silicate 2.5 ~ 9.7 parts;
Sodium aluminate 4.3 ~ 18 parts.
Described SiO
2be a kind of white, amorphous solid powder, density is between 2.30 ~ 2.65g/cm
3, particle diameter is between 5.0 ~ 120 μm.
The pale solid powder of described pearlstone to be a kind of inside be polynuclear plane, tap density is between 0.12 ~ 0.20g/cm
3, particle diameter is between 60 ~ 180 μm.
Described wollastonite is a kind of triclinic fibrous solids powder, and density is between 2.75 ~ 3.0g/cm
3, particle diameter is between 250 ~ 750 μm.
Described Ca (OH)
2be a kind of white solid powder, density is between 2.0 ~ 2.30g/cm
3, particle diameter is between 12 ~ 80 μm.
Described M
2cO
3k
2cO
3, Li
2cO
3and Na
2cO
3in one or more combination, particle diameter is between 75 ~ 250 μm.
Described pure aluminium silicate is a kind of amorphous white solid powder, and tap density is between 0.25 ~ 0.30g/cm
3, particle diameter is between 1.5 ~ 5.0 μm.
Described sodium aluminate is a kind of amorphous white solid powder, and density is between 1.50 ~ 1.65g/cm
3, particle diameter is between 48 ~ 180 μm.
High temperature resistant well cementing material system of the present invention in use, the water of certain mass percentage ratio can be added, the ratio (water-solid ratio) of the quality of water and the total mass of high temperature resistant well cementing material system all solids is 0.35 ~ 0.90, and the slurry density prepared is 1.42 ~ 1.82g/cm
3.
Advantage of the present invention: (1) high temperature resistant well cementing material system of the present invention only just hydro-thermal reaction can occur under certain high-temperature and high-pressure conditions, make use of the high temperature and high pressure environment of deep formation fully, change the High Temperature High Pressure unfavorable factor that current high temperature oil gas well cementing faces into favourable condition.(2) present invention achieves a kind of proportion of composing by oxygenatedchemicalss such as regulation and control Different Silicon, calcium, aluminium, realize controlling and reducing CaO and SiO
2the object of mol ratio, issues raw hydrothermal synthesis reaction at the high-temperature and high-pressure conditions of deep formation, generates silicates, the Aluminosilicates agglutinate with mechanical behavior under high temperature stability, thus reaches the target of the high temperature resistant well cementation of Oil/gas Well.(3) high temperature resistant well cementing material system of the present invention can reduce cement slurry density by increasing water-solid ratio, can reduce the consumption of expensive high pressure resistant well cementation light-weight additive, have good economic benefit.(4) produce 1 ton of high temperature resistant well cementing material system of the present invention and about discharge 0.18 ~ 0.30 ton of CO
2, and produce 1 ton of oil well cement and will discharge 0.80 ~ 0.90 ton of CO
2, therefore, the application of well cementing material system that the present invention is high temperature resistant will be conducive to reducing CO
2quantity discharged, reduces environmental pollution.
The invention provides a kind of technically reliable, site operation is convenient, cost is low, the well cementing material system of deep formation High Temperature High Pressure oil gas well cementing operation operation can be met, along with China accelerates Deep Oil And Gas Exploration resource exploitation, high temperature resistant well cementing material system of the present invention has very wide application prospect.
Accompanying drawing explanation
Fig. 1 is high temperature resistant well cementing material of the present invention, slurry is prepared, at 150 DEG C, the static gel strength (StaticGelStrength) that adopts Chandler company of U.S. StaticGelStrengthAnalyzer (Model5265UwithUCAfunctionality) to test under 30MPa condition and ultimate compression strength (CompressiveStrength) progress curve figure with water-solid ratio 0.60.
Embodiment
Experimental technique: prepare high temperature well cementation slurry by standard GB/T19139-2003 " oil-well cement test method ", and reference standard SY/T6544-2003 " oil well cement paste performance requriements ", SY/T6466-2000 " hardened oilwell cement high temperature resistant property evaluation method " test the performance of high temperature resistant well cementation slurry.
Embodiment 1: high temperature resistant well cementing material system composition
A kind of high temperature resistant well cementing material system can be made up of oxygenatedchemicalss such as following silicon, calcium, aluminium, and the mass fraction of each material is specially: SiO
2be 42.2 parts, pearlstone is 13.5 parts, wollastonite is 5.7 parts, Ca (OH)
2be 22.3 parts, Li
2cO
3be 4.5 parts, pure aluminium silicate is 2.7 parts, sodium aluminate is 9.1 parts.
Embodiment 2: high temperature resistant well cementing material system slurry performance test
With the high temperature resistant well cementing material system of embodiment 1 for tested object, first high temperature resistant well cementing material system solid dry ash component with slurry and liquid water component weighed separately and mix, then preparing slurry by standard GB/T19139-2003 " oil-well cement test method ".Test-results is in table 1.
The slurry performance of well cementing material system that table 1 is high temperature resistant
| Numbering | Water-solid ratio | Density/(g/cm 3) | Degree of mobilization/cm | Thickening time/min (150 DEG C × 50MPa) |
| 1 | 0.35 | 1.78 | 17.0 | 157 |
| 2 | 0.44 | 1.72 | 20.0 | 172 |
| 3 | 0.60 | 1.65 | 21.5 | 193 |
| 4 | 0.80 | 1.54 | 23.0 | 230 |
Embodiment 3: the intensity test of high temperature resistant well cementing material system
With embodiment 1 high temperature well cementing material system for tested object, first high temperature well cementing material system solid dry ash component with slurry and liquid water component are weighed separately and mix, then slurry is prepared by standard GB/T19139-2003 " oil-well cement test method ", measure ultimate compression strength after High Temperature High Pressure maintenance, test-results is in table 1.
The ultimate compression strength performance of well cementing material system that table 2 is high temperature resistant
Certainly; the above is only one embodiment of the present invention; should be understood that those skilled in the art; under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications all belong within the protection domain of the claims in the present invention.
Claims (8)
1. a high temperature resistant well cementing material system, it is characterized in that each component and mass fraction composed as follows:
2. the high temperature resistant well cementing material system of claim 1, wherein said SiO
2be a kind of white, amorphous solid powder, density is between 2.30 ~ 2.65g/cm
3, particle diameter is between 5.0 ~ 120 μm.
3. the high temperature resistant well cementing material system of claim 1, the pale solid powder of wherein said pearlstone to be a kind of inside be polynuclear plane, tap density is between 0.12 ~ 0.20g/cm
3, particle diameter is between 60 ~ 180 μm.
4. the high temperature resistant well cementing material system of claim 1, wherein said wollastonite is a kind of triclinic fibrous solids powder, and density is between 2.75 ~ 3.0g/cm
3, particle diameter is between 250 ~ 750 μm.
5. the high temperature resistant well cementing material system of claim 1, wherein said Ca (OH)
2be a kind of white solid powder, density is between 2.0 ~ 2.30g/cm
3, particle diameter is between 12 ~ 80 μm.
6. the high temperature resistant well cementing material system of claim 1, wherein said M
2cO
3k
2cO
3, Li
2cO
3and Na
2cO
3in one or more combination, particle diameter is between 75 ~ 250 μm.
7. the high temperature resistant well cementing material system of claim 1, wherein said pure aluminium silicate is a kind of amorphous white solid powder, and tap density is between 0.25 ~ 0.30g/cm
3, particle diameter is between 1.5 ~ 5.0 μm.
8. the high temperature resistant well cementing material system of claim 1, wherein said sodium aluminate is a kind of amorphous white solid powder, and density is between 1.50 ~ 1.65g/cm
3, particle diameter is between 48 ~ 180 μm.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902933A (en) * | 2017-11-24 | 2018-04-13 | 成都博世威科技有限公司 | A kind of oil-well cement high temperature resistance decline extra material and preparation method thereof |
| CN108298902A (en) * | 2018-02-02 | 2018-07-20 | 中国石油天然气集团有限公司 | A kind of high temperature resistant silicate grout and preparation method thereof |
| WO2020206011A1 (en) * | 2019-04-02 | 2020-10-08 | Oxy Low Carbon Ventures, Llc | Methods involving cements that employ carbon dioxide as a reactant |
| CN116103025A (en) * | 2023-02-20 | 2023-05-12 | 中国石油大学(华东) | Hydrothermal synthesis material suitable for ultra-high temperature stratum well cementation |
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| CN1810915A (en) * | 2006-02-24 | 2006-08-02 | 西南石油学院 | Comprehensive performace regulator for well cementing cement slurry and its prepn |
| CN103370393A (en) * | 2010-12-21 | 2013-10-23 | 哈里伯顿能源服务公司 | Settable compositions comprising unexpanded perlite and methods of cementing in subterranean formations |
| CN103571444A (en) * | 2012-07-20 | 2014-02-12 | 中国石油化工股份有限公司 | High temperature-resistant oil well cement additive, and preparation and applications thereof |
-
2015
- 2015-11-16 CN CN201510788673.2A patent/CN105255464B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1810915A (en) * | 2006-02-24 | 2006-08-02 | 西南石油学院 | Comprehensive performace regulator for well cementing cement slurry and its prepn |
| CN103370393A (en) * | 2010-12-21 | 2013-10-23 | 哈里伯顿能源服务公司 | Settable compositions comprising unexpanded perlite and methods of cementing in subterranean formations |
| CN103571444A (en) * | 2012-07-20 | 2014-02-12 | 中国石油化工股份有限公司 | High temperature-resistant oil well cement additive, and preparation and applications thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902933A (en) * | 2017-11-24 | 2018-04-13 | 成都博世威科技有限公司 | A kind of oil-well cement high temperature resistance decline extra material and preparation method thereof |
| CN107902933B (en) * | 2017-11-24 | 2021-06-22 | 四川盛年同缔实业有限公司 | High-temperature-fading-resistant admixture for oil well cement and preparation method thereof |
| CN108298902A (en) * | 2018-02-02 | 2018-07-20 | 中国石油天然气集团有限公司 | A kind of high temperature resistant silicate grout and preparation method thereof |
| CN108298902B (en) * | 2018-02-02 | 2020-10-09 | 中国石油天然气集团有限公司 | High-temperature-resistant silicate cement slurry and preparation method thereof |
| US11618844B2 (en) | 2018-02-02 | 2023-04-04 | China National Petroleum Corporation | High temperature resistant Portland cement slurry and production method thereof |
| WO2020206011A1 (en) * | 2019-04-02 | 2020-10-08 | Oxy Low Carbon Ventures, Llc | Methods involving cements that employ carbon dioxide as a reactant |
| CN113811518A (en) * | 2019-04-02 | 2021-12-17 | 含氧低碳投资有限责任公司 | Method relating to cement using carbon dioxide as reactant |
| CN116103025A (en) * | 2023-02-20 | 2023-05-12 | 中国石油大学(华东) | Hydrothermal synthesis material suitable for ultra-high temperature stratum well cementation |
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