RU2144977C1 - Oil well cement for low-temperature wells - Google Patents
Oil well cement for low-temperature wells Download PDFInfo
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- RU2144977C1 RU2144977C1 RU97103897A RU97103897A RU2144977C1 RU 2144977 C1 RU2144977 C1 RU 2144977C1 RU 97103897 A RU97103897 A RU 97103897A RU 97103897 A RU97103897 A RU 97103897A RU 2144977 C1 RU2144977 C1 RU 2144977C1
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- cement
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- gypsum
- temperature wells
- plasticizer
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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
- C04B28/04—Portland cements
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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
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/601—Agents for increasing frost resistance
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
Изобретение относится к нефтяной и газовой промышленности и может быть использовано для цементирования нефтяных и газовых скважин, а также при разведочном бурении, преимущественно в арктической зоне. The invention relates to the oil and gas industry and can be used for cementing oil and gas wells, as well as during exploratory drilling, mainly in the Arctic zone.
Известен тампонажный цемент для цементирования низкотемпературных скважин, содержащий, мас.%: портландцемент 50-65, зола-унос - 20-32, сульфат натрия и/или кальция - 2-8, гидросил - 9-14 (см.RU, авторское свидетельство N 1802087, МКИ 5 E 21 B 33/138, 1993 г.). Недостатком вышеупомянутого аналога является низкая прочность, большое водоцементное соотношение, что приводит к замерзанию цементного камня т.е. такой состав может быть использован только при низких положительных температурах. Well-known cement for cementing low-temperature wells, containing, wt.%: Portland cement 50-65, fly ash - 20-32, sodium and / or calcium sulfate - 2-8, hydrosil - 9-14 (see RU, copyright certificate N 1802087, MKI 5 E 21 B 33/138, 1993). The disadvantage of the aforementioned analogue is its low strength, high water-cement ratio, which leads to freezing of cement stone i.e. such a composition can only be used at low positive temperatures.
Известен также тампонажный цемент, предназначенный для низкотемпературных скважин, содержащий, вес.%: полугидрат сульфата кальция - 54,27, портландцемент - 36,21, мочевина - 7,16, двугидрат хлорида кальция - 0,39, продукт конденсации нафталинсульфоната натрия и формальдегида (см. US, патент N 4036659, НКИ 106-90, 1977 г.). Also known is cement slurry intended for low-temperature wells, containing, wt.%: Calcium sulfate hemihydrate - 54.27, Portland cement - 36.21, urea - 7.16, calcium chloride dihydrate - 0.39, condensation product of sodium naphthalene sulfonate and formaldehyde (see US patent N 4036659, NKI 106-90, 1977).
Недостатком данного аналога является то, что данную смесь необходимо готовить непосредственно перед применением из-за гигроскопичности двугидрата хлорида кальция, что не дает возможности получения стабильного продукта с требуемыми свойствами. The disadvantage of this analogue is that this mixture must be prepared immediately before use due to the hygroscopicity of calcium chloride dihydrate, which makes it impossible to obtain a stable product with the desired properties.
Наиболее близким из аналогов к данному изобретению является тампонажный цемент ("Пермафрост") для низкотемпературных скважин, содержащий 15-35 кг портландцемента, 0,1-3,5 кг противоморозной добавки, состоящей из хлористых солей одновалентного металла, гипс в соотношении с портландцементом 1:1 -3:1 и пластификатор на основе натриевой соли продукта конденсации нафталинсульфокислоты и формальдегида (см. US, патент N 3937282, НКИ 166/293, 1976 г.). The closest of the analogues to this invention is cement slurry (Permafrost) for low-temperature wells, containing 15-35 kg of Portland cement, 0.1-3.5 kg of an antifreeze additive consisting of monovalent metal chloride salts, gypsum in relation to Portland cement 1 : 1 -3: 1 and a plasticizer based on the sodium salt of the condensation product of naphthalenesulfonic acid and formaldehyde (see US patent N 3937282, NCI 166/293, 1976).
Недостатком этого аналога является то, что данная смесь обладает усадкой, что приводит к газопроявлению между обсадной трубой и цементным камнем. The disadvantage of this analogue is that this mixture has shrinkage, which leads to gas manifestation between the casing and cement stone.
При создании изобретения решалась следующая техническая задача: создание безусадочного тампонажного цемента для низкотемпературных скважин с регулируемыми сроками схватывания, обладающего повышенной прочностью при изгибе. When creating the invention, the following technical problem was solved: the creation of non-shrinking cement for low-temperature wells with adjustable setting time, which has increased bending strength.
Решение указанной технической задачи обеспечивается тем, что тампонажный цемент для низкотемпературных скважин, включающий портландцемент, пластификатор и противоморозную добавку, дополнительно содержит расширяющийся компонент, в качестве которого использован гипс и/или глиноземистый цемент, а в качестве противоморозной добавки - хлористая соль щелочного или щелочноземельного металла, при следующем соотношении компонентов, мас.%:
портландцемент - 48-80
указанный расширяющийся компонент - 20-50
указанная противоморозная добавка - 4-6
пластификатор - 0,15-0,7% от массы тампонажного цемента
Тампонажный цемент содержит в качестве гипса гипсовый камень, и/или ангидрит, и/или полугидрит сульфата кальция.The solution of this technical problem is ensured by the fact that grouting cement for low-temperature wells, including Portland cement, a plasticizer and an antifrosty additive, additionally contains an expanding component, which is used as gypsum and / or alumina cement, and as an antifreeze additive, an alkali or alkaline earth metal chloride salt , in the following ratio of components, wt.%:
Portland cement - 48-80
the specified expanding component is 20-50
specified antifreeze additive - 4-6
plasticizer - 0.15-0.7% by weight of cement cement
Grouting cement contains gypsum as gypsum and / or anhydrite and / or hemihydrite calcium sulfate.
Кроме того, тампонажный цемент в качестве гипса содержит гипсосодержащие отходы промышленного производства. In addition, cement as gypsum contains gypsum-containing industrial waste.
Следует также отметить, что тампонажный цемент в качестве глиноземистого цемента может содержать металлуригические отходы производства на основе алюмината кальция. It should also be noted that grouting cement as alumina cement may contain metallurgical waste products based on calcium aluminate.
Пример осуществления изобретения. An example embodiment of the invention.
В качестве исходных компонентов для приготовления тампонажного цемента используют портландцемент марки "500" завода "Гигант", полуводный фосфогипс АО "Минудобрений" города Воскресенска, глиноземистый цемент марки "400" Пашийского металлургическо-цементного завода. В качестве пластификаторов могут использоваться ЛСТМ, С-3, Н-1 (конденсации сульфокислот с формальдегидом). Тампонажный цемент готовят совместным помолом исходных компонентов или смешением раздельно измельченных компонентов. Удельная поверхность тампонажного цемента составляет 300-350 м2/кг.As the initial components for the preparation of grouting cement, Portland cement of the 500 grade of the Gigant plant, semi-aquatic phosphogypsum of Minudobreniy JSC of the city of Voskresensk, alumina cement of the 400 grade of the Pashi Metallurgical Cement Plant are used. As plasticizers can be used LSTM, C-3, H-1 (condensation of sulfonic acids with formaldehyde). Grouting cement is prepared by joint grinding of the starting components or by mixing separately crushed components. The specific surface of the cement is 300-350 m 2 / kg.
Результаты испытаний тампонажного цемента и его составы приведены в таблицах 1, 2. The test results of cement cement and its compositions are shown in tables 1, 2.
Как следует из таблицы 2, тампонажный цемент по изобретению имеет регулируемые сроки схватывания за счет изменения содержания функциональных добавок и повышенную прочность при изгибе в раннем возрасте. As follows from table 2, the cement according to the invention has an adjustable setting time by changing the content of functional additives and increased bending strength at an early age.
Растекаемость тампонажного раствора на указанном цементе находится в пределах 190 мм при В/Ц=0,37-0,39. The spreadability of the cement slurry on the specified cement is within 190 mm at W / C = 0.37-0.39.
Claims (3)
Портландцемент - 48 - 80
Указанный расширяющийся компонент - 20 - 50
Указанная противоморозная добавка - 4 - 6
Пластификатор - 0,15 - 0,7% от массы тампонажного цемента
2. Тампонажный цемент для низкотемпературных скважин по п.1. отличающийся тем, что он содержит в качестве гипса гипсовый камень, и/или ангидрид, и/или полугидрат сульфата кальция.1. Grouting cement for low-temperature wells, including Portland cement, an antifrosty additive and a plasticizer, characterized in that it additionally contains an expanding component, which is used as gypsum and / or alumina cement, and as an antifreeze additive - an alkali or alkaline earth metal chloride salt with the following ratio of components, wt.%:
Portland cement - 48 - 80
Specified Expandable Component - 20 - 50
Specified antifrosty additive - 4 - 6
Plasticizer - 0.15 - 0.7% by weight of cement
2. Grouting cement for low temperature wells according to claim 1. characterized in that it contains gypsum as gypsum and / or anhydride and / or calcium sulfate hemihydrate.
Priority Applications (1)
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RU97103897A RU2144977C1 (en) | 1997-03-13 | 1997-03-13 | Oil well cement for low-temperature wells |
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RU97103897A RU2144977C1 (en) | 1997-03-13 | 1997-03-13 | Oil well cement for low-temperature wells |
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RU97103897A RU97103897A (en) | 1999-03-27 |
RU2144977C1 true RU2144977C1 (en) | 2000-01-27 |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6780236B2 (en) * | 2002-09-12 | 2004-08-24 | Ronald Lee Barbour | Settable composition containing sodium chloride |
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 |
CN105238375A (en) * | 2015-10-23 | 2016-01-13 | 中国石油化工股份有限公司 | High strength auto-expansion plugging agent |
CN106986584A (en) * | 2017-03-23 | 2017-07-28 | 中国石油天然气集团公司 | A kind of low-temperature high-strength cement slurry and its preparation method and application |
CN110105030A (en) * | 2019-05-21 | 2019-08-09 | 葛洲坝石门特种水泥有限公司 | A kind of well cementing material and its production method suitable for low temperature environment |
CN110218058A (en) * | 2019-06-20 | 2019-09-10 | 祁彦民 | A kind of freeze proof material and restorative procedure |
CN110668765A (en) * | 2018-07-02 | 2020-01-10 | 中国石油化工股份有限公司 | Negative-temperature well cementation cement slurry in frozen soil area and preparation method and application thereof |
CN111302749A (en) * | 2020-03-04 | 2020-06-19 | 中国建筑材料科学研究总院有限公司 | Cement-based cementing material suitable for environment at-10 to-30 ℃ and construction method and application thereof |
RU2813584C1 (en) * | 2023-06-09 | 2024-02-13 | Публичное акционерное общество "Газпром" | Porous expanding cement material |
-
1997
- 1997-03-13 RU RU97103897A patent/RU2144977C1/en active
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6780236B2 (en) * | 2002-09-12 | 2004-08-24 | Ronald Lee Barbour | Settable composition containing sodium chloride |
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 |
CN105238375A (en) * | 2015-10-23 | 2016-01-13 | 中国石油化工股份有限公司 | High strength auto-expansion plugging agent |
CN105238375B (en) * | 2015-10-23 | 2018-05-08 | 中国石油化工股份有限公司 | A kind of high intensity self-expanding sealing agent |
CN106986584A (en) * | 2017-03-23 | 2017-07-28 | 中国石油天然气集团公司 | A kind of low-temperature high-strength cement slurry and its preparation method and application |
CN106986584B (en) * | 2017-03-23 | 2020-01-07 | 中国石油天然气集团公司 | Low-temperature high-strength and high-toughness cement slurry as well as preparation method and application thereof |
CN110668765A (en) * | 2018-07-02 | 2020-01-10 | 中国石油化工股份有限公司 | Negative-temperature well cementation cement slurry in frozen soil area and preparation method and application thereof |
CN110105030B (en) * | 2019-05-21 | 2021-10-29 | 葛洲坝石门特种水泥有限公司 | Well cementation material suitable for low-temperature environment and production method thereof |
CN110105030A (en) * | 2019-05-21 | 2019-08-09 | 葛洲坝石门特种水泥有限公司 | A kind of well cementing material and its production method suitable for low temperature environment |
CN110218058A (en) * | 2019-06-20 | 2019-09-10 | 祁彦民 | A kind of freeze proof material and restorative procedure |
CN111302749A (en) * | 2020-03-04 | 2020-06-19 | 中国建筑材料科学研究总院有限公司 | Cement-based cementing material suitable for environment at-10 to-30 ℃ and construction method and application thereof |
CN111302749B (en) * | 2020-03-04 | 2022-03-11 | 中国建筑材料科学研究总院有限公司 | Cement-based cementing material suitable for environment at-10 to-30 ℃ and construction method and application thereof |
RU2813584C1 (en) * | 2023-06-09 | 2024-02-13 | Публичное акционерное общество "Газпром" | Porous expanding cement material |
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