CN105349126A - Oil well cement coagulation-accelerating early strength agent and preparation method thereof - Google Patents
Oil well cement coagulation-accelerating early strength agent and preparation method thereof Download PDFInfo
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- CN105349126A CN105349126A CN201510915413.7A CN201510915413A CN105349126A CN 105349126 A CN105349126 A CN 105349126A CN 201510915413 A CN201510915413 A CN 201510915413A CN 105349126 A CN105349126 A CN 105349126A
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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
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Abstract
The invention relates to an oil well cement coagulation-accelerating early strength agent and a preparation method thereof, and belongs to the technical field of oil well cement additives. The early strength agent is prepared from, by weight, 10-50 parts of gypsum powder, 10-40 parts of quick lime and 10-50 parts of aluminum salt. The purposes that the agent is quite convenient to use, and the synergistic interaction of organic salt and inorganic salt is sufficiently utilized can be achieved, and cement paste can rapidly set at low temperature.
Description
Technical field
The present invention relates to a kind of cement early strength agent and preparation method thereof, more particularly, the present invention relates to short solidifying hardening accelerator of a kind of oil well cement and preparation method thereof, belong to oil well cement additive technical field.
Background technology
Under surface string enters the situations such as well is shallow, winter job temperature is low, pole is unfavorable for solidifying of grout.Usual way improves the early strength of grout, but when cannot meet present high speed drilling well, to the requirement of grout extremely short thickening time.Further, if the inorganic salt amount added is excessive, often cause its performance reverse, bring the risk being difficult to predict to well cementation.
It is CN102533235A that State Intellectual Property Office discloses a publication number in 2012.7.4, name is called the invention of " in a kind of oil well cement high temperature hardening accelerator ", high temperature hardening accelerator in a kind of oil well cement of this disclosure of the invention, it comprises following component, and the weight ratio of each component is: Sulfothiorine 1.2 ~ 2.8, aluminium chlorohydroxide 0.2 ~ 2, SODIUMNITRATE 0.2 ~ 0.6, micro-silicon 0.2 ~ 1, calcium aluminate 0 ~ 0.2.The invention has the beneficial effects as follows: under high temperature, it can improve the early strength of Behavior of Hardened Cement Paste significantly when not affecting the thickening time, solving the present situation of Behavior of Hardened Cement Paste early strength slower development under middle hot environment, and good with other admixture compatiblenesies; Contribute to the fluid loss controlling grout simultaneously under temperature, reduce the dosage of water retaining, saved cost.
Above-mentioned documents is the hardening accelerator being applicable to middle high temperature, is not suitable for the requirement under low-temperature condition, and the thickening time is longer.
Summary of the invention
The present invention is intended to solve oil well cement of the prior art and urgees the problem that the inorganic salt of solidifying hardening accelerator and organic salt setting accelerator separately use existing defects, there is provided a kind of oil well cement short solidifying hardening accelerator, reach the object of synergy that potion is easy to use and makes full use of inorganic salt and organic salt, grout rapid solidification under cryogenic can be made.
To achieve these goals, its concrete technical scheme is as follows:
The short solidifying hardening accelerator of a kind of oil well cement, is characterized in that: comprise the following raw material according to weight parts:
Terra alba 10-50 part
Unslaked lime 10-40 part
Aluminium salt 10-50 part.
The short solidifying hardening accelerator of oil well cement of the present invention, also comprises the following raw material according to weight parts:
SILICA FUME 5-30 part
Fatty alcohol amine 1-30 part
Molysite 1-30 part
Polysulfonate 5-30 part.
The short solidifying hardening accelerator of a kind of oil well cement, is characterized in that: comprise the following raw material according to weight parts:
Terra alba 30 parts
Unslaked lime 20 parts
Aluminium salt 25 parts
SILICA FUME 8 parts
Fatty alcohol amine 3 parts
5 parts, molysite
Polysulfonate 12 parts.
Aluminium salt of the present invention is the multiple mixture of the one or any ratio in Tai-Ace S 150, aluminum nitrate, aluminum chloride, sodium metaaluminate, potassium metaaluminate and Tiorco 677.
Molysite of the present invention is the multiple mixture of the one or any ratio in ferric sulfate, ferrous sulfate, iron nitrate, iron(ic) chloride and ironic citrate.
The preparation method of solidifying hardening accelerator urged by the above-mentioned a kind of oil well cement of the present invention, it is characterized in that: terra alba, unslaked lime, aluminium salt, SILICA FUME, molysite and polysulfonate are weighed up in proportion, and drop in mixing machine and mix, then drip fatty alcohol amine, pulverize, obtain the short solidifying hardening accelerator of oil well cement.
The Advantageous Effects that the present invention brings:
1, the invention solves the problem of existing Early Strength Promtor for Oil Well Cement, the short solidifying hardening accelerator of oil well cement of the present invention is applicable to surface string and the well cementation of low temperature shallow well, greatly can shorten the grout thickening time at low temperatures, improve Behavior of Hardened Cement Paste early strength.The present invention can reach the object of synergy that potion is easy to use and makes full use of inorganic salt and organic salt, can make grout rapid solidification under cryogenic.
2, the short solidifying hardening accelerator of oil well cement of the present invention, can with flyash, micro-silicon, drift pearl, as use together with the light-weight additive extra material such as soil, with make meet site operation needs, the grout of different performance, ultimate compression strength rate of increase can reach more than 35%.
3, the short solidifying hardening accelerator of oil well cement of the present invention, can with multi-component copolymer type multi-functional water retaining HT-1 and the composite use of polyvinyl alcohol film-forming type water retaining LT-1, LT-2, play synergy, shorten cement slurry thickening time, meet that various casing and cementing requires to make and there is the grout of premium properties.
Embodiment
embodiment 1
The short solidifying hardening accelerator of a kind of oil well cement, comprises the following raw material according to weight parts:
Terra alba 10 parts
Unslaked lime 10 parts
Aluminium salt 10 parts.
embodiment 2
The short solidifying hardening accelerator of a kind of oil well cement, comprises the following raw material according to weight parts:
Terra alba 50 parts
Unslaked lime 40 parts
Aluminium salt 50 parts.
embodiment 3
The short solidifying hardening accelerator of a kind of oil well cement, comprises the following raw material according to weight parts:
Terra alba 30 parts
Unslaked lime 25 parts
Aluminium salt 30 parts.
embodiment 4
The short solidifying hardening accelerator of a kind of oil well cement, comprises the following raw material according to weight parts:
Terra alba 15 parts
Unslaked lime 32 parts
Aluminium salt 26 parts.
embodiment 5
The short solidifying hardening accelerator of a kind of oil well cement, comprises the following raw material according to weight parts:
Terra alba 10 parts
Unslaked lime 10 parts
Aluminium salt 10 parts
SILICA FUME 5 parts
Fatty alcohol amine 1 part
1 part, molysite
Polysulfonate 5 parts.
embodiment 6
The short solidifying hardening accelerator of a kind of oil well cement, comprises the following raw material according to weight parts:
Terra alba 50 parts
Unslaked lime 40 parts
Aluminium salt 50 parts
SILICA FUME 30 parts
Fatty alcohol amine 30 parts
30 parts, molysite
Polysulfonate 30 parts.
embodiment 7
The short solidifying hardening accelerator of a kind of oil well cement, comprises the following raw material according to weight parts:
Terra alba 30 parts
Unslaked lime 25 parts
Aluminium salt 30 parts
SILICA FUME 17.5 parts
Fatty alcohol amine 15.5 parts
15.5 parts, molysite
Polysulfonate 17.5 parts.
embodiment 8
The short solidifying hardening accelerator of a kind of oil well cement, comprises the following raw material according to weight parts:
Terra alba 40 parts
Unslaked lime 12 parts
Aluminium salt 37 parts
SILICA FUME 10 parts
Fatty alcohol amine 27 parts
29 parts, molysite
Polysulfonate 20 parts.
embodiment 9
The preparation method that solidifying hardening accelerator CNZQ-1 urged by oil well cement gets terra alba 30 parts, unslaked lime 20 parts, aluminium salt 25 parts, SILICA FUME 8 parts, 5 parts, molysite and polysulfonate 12 parts.Weigh up according to the above ratio and drop in mixing machine and mix, then drip fatty alcohol amine 3 parts, pulverize.
Described aluminium salt is the multiple mixture of the one or any ratio in Tai-Ace S 150, aluminum nitrate, aluminum chloride, sodium metaaluminate, potassium metaaluminate and Tiorco 677.Described molysite is the multiple mixture of the one or any ratio in ferric sulfate, ferrous sulfate, iron nitrate, iron(ic) chloride and ironic citrate.
CNZQ-1 tests oil well cement paste performance impact.Cement slurry property test is carried out by GB/T19139-2012 " oil-well cement test method ".Wherein, oil well cement is good magnificent G level oil well cement, and water/ash is 0.44.Test-results is in table 1.
Table 1CNZQ-1 affects test result to cement slurry property
Above data show: along with CNZQ-1 volume increases, and the liquidity index n value of grout and the change of consistency index K value are not quite.Cement strength development tests the increase of volume with CNZQ-1 and curing time increases and evenly increases.Cement slurry thickening time increases with CNZQ-1 volume and regularly shortens.
embodiment 10
The preparation method that solidifying hardening accelerator CNZQ-1 urged by oil well cement gets terra alba 30 parts, unslaked lime 20 parts, aluminium salt 25 parts, SILICA FUME 8 parts, 5 parts, molysite and polysulfonate 12 parts.Weigh up according to the above ratio and drop in mixing machine and mix, then drip fatty alcohol amine 3 parts, pulverize.
Described aluminium salt is the multiple mixture of the one or any ratio in Tai-Ace S 150, aluminum nitrate, aluminum chloride, sodium metaaluminate, potassium metaaluminate and Tiorco 677.Described molysite is the multiple mixture of the one or any ratio in ferric sulfate, ferrous sulfate, iron nitrate, iron(ic) chloride and ironic citrate.
CNZQ-1 adds the oil well cement paste performance impact test of HT-1 multi-component copolymer fluid loss agent.Cement slurry property test is carried out by GB/T19139-2012 " oil-well cement test method ".Wherein, oil well cement is good magnificent G level oil well cement, and HT-13%, dispersion agent FS-10.2%, water/ash is 0.44.Test-results is in table 2.
Table 2CNZQ-1 is to the oil well cement paste performance impact test result adding HT-1 multi-component copolymer fluid loss agent
Test-results shows: along with CNZQ-1 volume increases, little to the liquidity index n value and the change of consistency index K value adding HT-1 grout.Cement strength development tests the increase of volume with CNZQ-1 and curing time increases and evenly increases.Cement slurry thickening time increases with CNZQ-1 volume and regularly shortens.Disadvantageous effect is not had at the filtrate loss controllability of the grout necessarily adding CNZQ-1 in weight range.
embodiment 11
The preparation method that solidifying hardening accelerator CNZQ-1 urged by oil well cement gets terra alba 30 parts, unslaked lime 20 parts, aluminium salt 25 parts, SILICA FUME 8 parts, 5 parts, molysite and polysulfonate 12 parts.Weigh up according to the above ratio and drop in mixing machine and mix, then drip fatty alcohol amine 3 parts, pulverize.
Described aluminium salt is the multiple mixture of the one or any ratio in Tai-Ace S 150, aluminum nitrate, aluminum chloride, sodium metaaluminate, potassium metaaluminate and Tiorco 677.Described molysite is the multiple mixture of the one or any ratio in ferric sulfate, ferrous sulfate, iron nitrate, iron(ic) chloride and ironic citrate.
CNZQ-1 is to the low-density oil-well cement slurry performance impact test of Polyvinyl alcohol film forming filtrate reducer (LT-2).Cement slurry property test is carried out by GB/T19139-2012 " oil-well cement test method ".Wherein, testing cement-slurry method is: good magnificent G class g cement: flyash: micro-silicon: fluid loss agent LT-2: flow improver SXY-2: water=222:178:120:7.8:3.3:470, cement slurry density is 1.45g/cm3.Test-results is in table 3.
Table 3CNZQ-1 is to the low-density oil-well cement slurry performance impact experimental test result of Polyvinyl alcohol film forming filtrate reducer (LT-2)
Test-results shows: with the change of CNZQ-1 dosage, and the rotational viscosimeter reading of grout and n value, K value change little.Effectively can improve the ultimate compression strength of the higher low density water mudstone of above-mentioned water-solid ratio.CNZQ-1 to add LT-2 and micro-silicon large water cement ratio low-density cement mortar thickening time Rule adjusting change.The filtrate loss controllability of CNZQ-1 to the large water cement ratio low-density cement mortar adding LT-2 and micro-silicon does not have disadvantageous effect.When CNZQ-1 volume is increased to 4% from 1% successively, the filter loss of this grout only slightly increases, but still in allowed band.
Claims (6)
1. the short solidifying hardening accelerator of oil well cement, is characterized in that: comprise the following raw material according to weight parts:
Terra alba 10-50 part
Unslaked lime 10-40 part
Aluminium salt 10-50 part.
2. the short solidifying hardening accelerator of a kind of oil well cement according to claim 1, is characterized in that: the short solidifying hardening accelerator of described oil well cement, also comprises the following raw material according to weight parts:
SILICA FUME 5-30 part
Fatty alcohol amine 1-30 part
Molysite 1-30 part
Polysulfonate 5-30 part.
3. the short solidifying hardening accelerator of a kind of oil well cement according to claim 2, is characterized in that: comprise the following raw material according to weight parts:
Terra alba 30 parts
Unslaked lime 20 parts
Aluminium salt 25 parts
SILICA FUME 8 parts
Fatty alcohol amine 3 parts
5 parts, molysite
Polysulfonate 12 parts.
4., according to the short solidifying hardening accelerator of a kind of oil well cement in claim 1-3 described in any one, it is characterized in that: described aluminium salt is the multiple mixture of the one or any ratio in Tai-Ace S 150, aluminum nitrate, aluminum chloride, sodium metaaluminate, potassium metaaluminate and Tiorco 677.
5. the short solidifying hardening accelerator of a kind of oil well cement according to Claims 2 or 3, is characterized in that: described molysite is the multiple mixture of the one or any ratio in ferric sulfate, ferrous sulfate, iron nitrate, iron(ic) chloride and ironic citrate.
6. the preparation method of solidifying hardening accelerator urged by a kind of oil well cement according to Claims 2 or 3, it is characterized in that: terra alba, unslaked lime, aluminium salt, SILICA FUME, molysite and polysulfonate are weighed up in proportion, and drop in mixing machine and mix, drip fatty alcohol amine again, pulverize, obtain the short solidifying hardening accelerator of oil well cement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510915413.7A CN105349126A (en) | 2015-12-10 | 2015-12-10 | Oil well cement coagulation-accelerating early strength agent and preparation method thereof |
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| CN201510915413.7A CN105349126A (en) | 2015-12-10 | 2015-12-10 | Oil well cement coagulation-accelerating early strength agent and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106477947A (en) * | 2016-10-12 | 2017-03-08 | 佛山迅拓奥科技有限公司 | A kind of additive improving cement-based material early hardness and its preparation method and application |
| CN106543984A (en) * | 2016-10-21 | 2017-03-29 | 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 oil well cement swelling agent and preparation method thereof |
| CN111233363A (en) * | 2020-02-25 | 2020-06-05 | 卫辉市化工有限公司 | Low-density reinforcing agent for oil well cement and preparation method thereof |
| CN112094091A (en) * | 2020-10-30 | 2020-12-18 | 成都欧美克石油科技股份有限公司 | Large-temperature-difference low-heat-conductivity cement slurry suitable for long-sealing-section well cementation |
| CN114315243A (en) * | 2021-11-30 | 2022-04-12 | 浙江大经住工科技有限公司 | Environment-friendly self-compacting premixed concrete and production process thereof |
| CN115703671A (en) * | 2021-08-11 | 2023-02-17 | 贵州省安顺开发区三合砼业有限公司 | Inorganic salt alkali return prevention accelerator and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106477947A (en) * | 2016-10-12 | 2017-03-08 | 佛山迅拓奥科技有限公司 | A kind of additive improving cement-based material early hardness and its preparation method and application |
| CN106543984A (en) * | 2016-10-21 | 2017-03-29 | 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 oil well cement swelling agent and preparation method thereof |
| CN111233363A (en) * | 2020-02-25 | 2020-06-05 | 卫辉市化工有限公司 | Low-density reinforcing agent for oil well cement and preparation method thereof |
| CN111233363B (en) * | 2020-02-25 | 2021-10-22 | 卫辉市化工有限公司 | Low-density reinforcing agent for oil well cement and preparation method thereof |
| CN112094091A (en) * | 2020-10-30 | 2020-12-18 | 成都欧美克石油科技股份有限公司 | Large-temperature-difference low-heat-conductivity cement slurry suitable for long-sealing-section well cementation |
| CN115703671A (en) * | 2021-08-11 | 2023-02-17 | 贵州省安顺开发区三合砼业有限公司 | Inorganic salt alkali return prevention accelerator and preparation method thereof |
| CN114315243A (en) * | 2021-11-30 | 2022-04-12 | 浙江大经住工科技有限公司 | Environment-friendly self-compacting premixed concrete and production process thereof |
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