CN103980871A - Low-elastic-modulus temperature-resistant tough oil-well cement - Google Patents
Low-elastic-modulus temperature-resistant tough oil-well cement Download PDFInfo
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- CN103980871A CN103980871A CN201410236070.7A CN201410236070A CN103980871A CN 103980871 A CN103980871 A CN 103980871A CN 201410236070 A CN201410236070 A CN 201410236070A CN 103980871 A CN103980871 A CN 103980871A
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- well cement
- oil well
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- elastic modulus
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- 239000004568 cement Substances 0.000 title claims abstract description 63
- 239000003129 oil well Substances 0.000 title claims abstract description 45
- 229920001971 elastomer Polymers 0.000 claims abstract description 38
- 239000012745 toughening agent Substances 0.000 claims abstract description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 239000010703 silicon Substances 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 235000013312 flour Nutrition 0.000 claims description 9
- 229910021487 silica fume Inorganic materials 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 6
- 229920000459 Nitrile rubber Polymers 0.000 claims description 6
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 claims description 6
- 239000004816 latex Substances 0.000 claims description 6
- 229920000126 latex Polymers 0.000 claims description 6
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- 229920002401 polyacrylamide Polymers 0.000 claims description 4
- 229920002449 FKM Polymers 0.000 claims description 3
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 3
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 3
- 229920003090 carboxymethyl hydroxyethyl cellulose Polymers 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 238000005984 hydrogenation reaction Methods 0.000 claims description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 3
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 229920001897 terpolymer Polymers 0.000 claims description 3
- 238000003860 storage Methods 0.000 abstract description 9
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 230000008719 thickening Effects 0.000 abstract 2
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 239000011863 silicon-based powder Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000011440 grout Substances 0.000 description 3
- 238000009775 high-speed stirring Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- 239000013536 elastomeric material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a low-elastic-modulus temperature-resistant tough oil-well cement which comprises the following components in parts by weight: 100 parts of oil-well cement, 20-40 parts of silicon powder, 0-10 parts of silicon micropowder, 5-20 parts of rubber toughener, 0-2 parts of flow pattern regulator, 0-5 parts of fluid loss agent and 0-5 parts of retarder. The oil-well cement has low elastic modulus and high impact resistance in a high-temperature environment, and the thickening time and compression strength satisfy the well-cementing demand. The oil-well cement solves the problem of poor stress resistance, and can effectively prolong the service life of the oil well. The oil-well cement has stable performance at normal temperature and high temperature, and has the advantages of favorable rheological property and controllable thickening time; and the permeability by alite gasometry is lower than 0.05mD, and thus, the oil-well cement satisfies the requirement of gas storage field well-cementing for cement properties.
Description
Technical field
The present invention relates to the oil well cement of oil and gas well cementation, especially a kind of temperature resistance toughness oil well cement of low elastic modulus.
Background technology
Well cementation is exactly carrying out effective sealing between the bunch tube being lowered in open hole section and stratum by certain means.Gas storage well construction demand amount increased rapidly in recent years, and the toughness cement that exploitation can effectively extend the gas storage well life-span, improves gas storage well cementing technology extremely urgent.
The current well cementation for gas storage well, the most frequently used is the cement slurry system that contains latex, its advantage is effectively to prevent has channeling and anticorrosion, but latex be introduced in the ultimate compression strength that has reduced to a certain extent Behavior of Hardened Cement Paste, the reduction of Young's modulus is not had to effect substantially, the most important thing is that latex cement performance is at high temperature extremely unstable, affect cementing quality, also affect oil well work-ing life.Elastomeric material has the features such as proportion is little, hardness is low, flexibility is good, wear-resisting, also has snappiness and certain visco-elasticity simultaneously, and the characteristic that rubber is had is incorporated in oil well cement, can meet the needs of gas storage well well cementation.Patent publication No. CN101857399 adopts coupling agent that coupling tackiness agent is put on to waste old surface, again by itself and cement mixing, the Behavior of Hardened Cement Paste of preparation has the features such as noise reduction, sound insulation, weather resistance are strong, patent publication No. CN101700970A has invented a kind of rubber-cement grouting material that is applied to half-flexible pavement, but this bi-material is only only applicable to the engineering construction under normal temperature and pressure, cannot meet the construction environment of well cementation oil well cement high temperature high pressure.Patent publication No. CN101519293 provides a kind of preparation method of rubber cement soil, but this material is only as in the geotechnical engineering fields such as roadbed or soil-baffling structure behind filler.High temperature resistance elastomeric material is incorporated in oil well cement system, prepares a kind of low elastic modulus, high strength, oil well cement paste that heat-resisting property is good, can meet present stage gas storage well well cementation demand.
Summary of the invention
Technical problem to be solved by this invention is, solves the anti-adaptability to changes of existing gas storage well cementing concrete poor, and gas storage well short problem in work-ing life provides a kind of temperature resistance toughness oil well cement of low elastic modulus.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of temperature resistance toughness oil well cement of low elastic modulus, comprises the component of following weight part: 100 parts of oil well cements, 20~40 parts of silica flours, 0~10 part of SILICA FUME, 5~20 parts of rubber toughening agents, 0~2 part of flow pattern regulator, 0~5 part of water retaining, 0~5 part of retardant.
Described oil well cement is G level oil well cement.
Described silica flour particle size range is 50~250 orders.
Described SILICA FUME particle size range 60~500 orders.
Described rubber toughening agent is the one or more combination in butadiene acrylonitrile rubber, hydrogenation butadiene acrylonitrile rubber silicon, terpolymer EP rubber, silicon rubber, viton, fluosilicic rubber and neoprene latex.
Described rubber toughening agent particle size range is 10~500 orders.
Described rubber toughening agent particle size range is 30~200 orders.
Described flow pattern regulator is the one or more combination in polyacrylamide, biological polymer XC, sodium hydroxyethyl cellulose and carboxymethyl hydroxyethyl cellulose sodium.
Described retardant is the one in multiple copolymer, organophosphate and the gluconic acid salt that contains carboxylic acid.
The invention has the beneficial effects as follows: can obviously improve the weathering resistance after oil well cement maintenance; The ultimate compression strength of oil well cement substantially constant or slightly reduce, Young's modulus significantly reduces; Within the scope of volume of the present invention, cement paste rheological is good, the lower stable mechanical property of Behavior of Hardened Cement Paste High Temperature High Pressure (130 DEG C, 30MPa).
Embodiment
The temperature resistance toughness oil well cement of low elastic modulus of the present invention, comprises the component of following weight part: 100 parts of oil well cements, 20~40 parts of silica flours, 0~10 part of SILICA FUME, 5~20 parts of rubber toughening agents, 0~2 part of flow pattern regulator, 0~5 part of water retaining, 0~5 part of retardant.
Described oil well cement is the G level oil well cement that meets GB10238-2005.
Described silica flour particle size range is 50~250 orders, D
50be 50~300 μ m.
Described SILICA FUME particle size range 60~500 orders, D
50be 5~50 μ m.
Described rubber toughening agent is the one or more combination in butadiene acrylonitrile rubber, hydrogenation butadiene acrylonitrile rubber silicon, terpolymer EP rubber, silicon rubber, viton, fluosilicic rubber and neoprene latex.
Described rubber toughening agent particle size range is 10~500 orders.
Described rubber toughening agent particle size range is 30~200 orders.
Described flow pattern regulator is the one or more combination in polyacrylamide, biological polymer XC, sodium hydroxyethyl cellulose and carboxymethyl hydroxyethyl cellulose sodium.
Described retardant is the one in multiple copolymer, organophosphate and the gluconic acid salt that contains carboxylic acid.
Below principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment 1
The mortar architecture that experiment is used is as follows:
500g Jiajiang G level oil well cement+317mL water+150g silica flour+25g SILICA FUME+25g rubber toughening agent+5g HPAM+4.0g GH-9+5.2g G-33S.
Rubber toughening agent is provided by Tianjin extraordinary splendor rubber company limited, and specification is the assorted silica gel of 150 orders; GH-9 is high temperature retarder, and North China is studied intensively institute and produced; G-33S is water retaining, and is produced from Henan Weihui City; HPAM is anionic polyacrylamide, and the place of production is the prosperous light in Hebei.
Above-mentioned materials is weighed, the in the situation that of high-speed stirring, various solid phase materials are mixed and stirred, test water mud traditional performance.Then slurry is poured into Behavior of Hardened Cement Paste and made in mould, maintenance 2d in high temperature and pressure protective cauldron, curing condition is 130 DEG C and 30MPa, test Mechanical Behavior of Hardened Cement Paste (130 DEG C) after taking out.
The grout traditional performance of table 1 embodiment 1
The rubber solution mudstone of table 2 embodiment 1 and the contrast of common hardened oilwell cement mechanical property
At 130 DEG C, test adds the Mechanical Behavior of Hardened Cement Paste of 5% rubber toughening agent, and ultimate compression strength almost constant, Young's modulus reduces by 17.1%.
Embodiment 2
The mortar architecture that experiment is used is as follows:
500g Jiajiang G level oil well cement+317mL water+150g silica flour+25g SILICA FUME+50g rubber toughening agent+5g HPAM+4.0g GH-9+5.2g G-33S.
Above-mentioned materials is weighed, the in the situation that of high-speed stirring, various solid phase materials are mixed and stirred, test water mud traditional performance.Then slurry is poured into Behavior of Hardened Cement Paste and made in mould, maintenance 2d in high temperature and pressure protective cauldron, curing condition is 130 DEG C and 30MPa, test Mechanical Behavior of Hardened Cement Paste (130 DEG C) after taking out.
The grout traditional performance of table 3 embodiment 2
The rubber solution mudstone of table 4 embodiment 2 and the contrast of common hardened oilwell cement mechanical property
At 130 DEG C, test adds the Mechanical Behavior of Hardened Cement Paste of 10% rubber toughening agent, and ultimate compression strength is in a slight decrease, but can meet well cementation demand, and Young's modulus reduction exceedes 40%.
Embodiment 3
The mortar architecture that experiment is used is as follows:
500g Jiajiang G level oil well cement+317mL water+150g silica flour+25g SILICA FUME+75g rubber toughening agent+5g HPAM+4.0g GH-9+5.2g G-33S.
Above-mentioned materials is weighed, the in the situation that of high-speed stirring, various solid phase materials are mixed and stirred, test water mud traditional performance.Then slurry is poured into Behavior of Hardened Cement Paste and made in mould, maintenance 2d in high temperature and pressure protective cauldron, curing condition is 130 DEG C and 30MPa, test Mechanical Behavior of Hardened Cement Paste (130 DEG C) after taking out.
The grout traditional performance of table 5 embodiment 3
The rubber solution mudstone of table 6 embodiment 3 and the contrast of common hardened oilwell cement mechanical property
At 130 DEG C, test adds the Mechanical Behavior of Hardened Cement Paste of 15% rubber toughening agent, and ultimate compression strength has reduction by a relatively large margin, and Young's modulus reduction exceedes 50%.
In sum, content of the present invention is not limited in the above-described embodiment, and the knowledgeable people in same area can propose easily other embodiment within technical director's thought of the present invention, but this embodiment comprises within the scope of the present invention.
Claims (9)
1. the temperature resistance toughness oil well cement of a low elastic modulus, it is characterized in that, comprise the component of following weight part: 100 parts of oil well cements, 20~40 parts of silica flours, 0~10 part of SILICA FUME, 5~20 parts of rubber toughening agents, 0~2 part of flow pattern regulator, 0~5 part of water retaining, 0~5 part of retardant.
2. the temperature resistance toughness oil well cement of low elastic modulus according to claim 1, is characterized in that, described oil well cement is G level oil well cement.
3. the temperature resistance toughness oil well cement of low elastic modulus according to claim 1, is characterized in that, described silica flour particle size range is 50~250 orders.
4. the temperature resistance toughness oil well cement of low elastic modulus according to claim 1, is characterized in that, described SILICA FUME particle size range 60~500 orders.
5. the temperature resistance toughness oil well cement of low elastic modulus according to claim 1, it is characterized in that, described rubber toughening agent is the one or more combination in butadiene acrylonitrile rubber, hydrogenation butadiene acrylonitrile rubber silicon, terpolymer EP rubber, silicon rubber, viton, fluosilicic rubber and neoprene latex.
6. the temperature resistance toughness oil well cement of low elastic modulus according to claim 1 or 5, is characterized in that, described rubber toughening agent particle size range is 10~500 orders.
7. the temperature resistance toughness oil well cement of low elastic modulus according to claim 6, is characterized in that, described rubber toughening agent particle size range is 30~200 orders.
8. the temperature resistance toughness oil well cement of low elastic modulus according to claim 1, is characterized in that, described flow pattern regulator is the one or more combination in polyacrylamide, biological polymer XC, sodium hydroxyethyl cellulose and carboxymethyl hydroxyethyl cellulose sodium.
9. the temperature resistance toughness oil well cement of low elastic modulus according to claim 1, is characterized in that, described retardant is the one in multiple copolymer, organophosphate and the gluconic acid salt that contains carboxylic acid.
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104371678A (en) * | 2014-11-06 | 2015-02-25 | 中国石油天然气集团公司 | Expanded flexible well cementing grout and preparation method thereof |
CN104650836A (en) * | 2014-12-22 | 2015-05-27 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Horizontal well cement paste |
CN104774601A (en) * | 2015-04-10 | 2015-07-15 | 中国石油大学(华东) | Gypsum microspheres and low elasticity modulus expansion well cementation cement system |
CN105154041A (en) * | 2015-07-27 | 2015-12-16 | 中国石油集团渤海钻探工程有限公司 | Oil well cement flexibilizer |
CN105254226A (en) * | 2015-10-01 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | Elastic cement paste and preparation method thereof |
CN106010489A (en) * | 2016-05-30 | 2016-10-12 | 葛洲坝石门特种水泥有限公司 | Ultrafine low-density cement mortar and production method thereof |
CN106278003A (en) * | 2015-06-10 | 2017-01-04 | 嘉华特种水泥股份有限公司 | A kind of toughness oil-well cement |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104371678A (en) * | 2014-11-06 | 2015-02-25 | 中国石油天然气集团公司 | Expanded flexible well cementing grout and preparation method thereof |
CN104650836A (en) * | 2014-12-22 | 2015-05-27 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Horizontal well cement paste |
CN104650836B (en) * | 2014-12-22 | 2018-02-06 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | A kind of horizontal cementing slurry for well |
CN104774601A (en) * | 2015-04-10 | 2015-07-15 | 中国石油大学(华东) | Gypsum microspheres and low elasticity modulus expansion well cementation cement system |
CN106278003A (en) * | 2015-06-10 | 2017-01-04 | 嘉华特种水泥股份有限公司 | A kind of toughness oil-well cement |
CN105154041A (en) * | 2015-07-27 | 2015-12-16 | 中国石油集团渤海钻探工程有限公司 | Oil well cement flexibilizer |
CN105254226A (en) * | 2015-10-01 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | Elastic cement paste and preparation method thereof |
CN106010489A (en) * | 2016-05-30 | 2016-10-12 | 葛洲坝石门特种水泥有限公司 | Ultrafine low-density cement mortar and production method thereof |
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