• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to cement mortars and is intended for the attachment of wells. The goal is to improve the quality of the solution by reducing water loss. The solution contains cement, mixing water and an additive. As the latter, a copolymer of acrylamide or acrylic acid with vinyl sulfonate or alkali metal or ammonium acrylamido-1,1-dimethylethylene sulfonate and with N-vinyl-N-methyl acetamide or N-vinyl pyrolidone in the amount of from 0.1 to 3.0% by weight of cement is used . Water / cement ratio from 0.34 to 0.83. The copolymer contains - alkali metal or ammonium vinyl sulfonate or alkali metal or ammonium acrylamido-1,1-dimethylethylene sulfonate in an amount of from 10 to 85 wt.%, N - vinyl-N-methylacetamide or N - vinyl pyrolidone from 10.0 to 27, 5 wt.% And acrylamide or acrylic acid from 5 to 75 wt.%. Molecular weight of copolymer is from 2.5.10 5 to 6.10 6 conventional units. When preparing the solution, the mixing fluid is poured into a mixing cup, then cement is added and mixed thoroughly, after which the copolymer is added. 2 tab.
    公开号:SU1473720A3
    申请号:SU843696438
    申请日:1984-01-23
    公开日:1989-04-15
    发明作者:Хилле Мартин；Фриде Вольфганг；Витткус Хайнц；Энгельхардт Фридрих；Ригель Ульрих
    申请人:Хехст Аг (Фирма)；
    IPC主号:
    专利说明:

    one
    The invention relates to cement slurries containing polymer additives to reduce water loss during the well casing process, which can be used for cementing deep wells.
    The purpose of the invention is to improve the quality of cement mortar due to
    reduce its water loss.
    ,
    The essence of the invention is that cement mortar for deep wells, including cement, mixing water and an additive, contains as the last a copolymer of acrylamide or acrylic acid with vinyl sulfonate or acrylamido-1,1-dimethylethylene sulfonate of alkali metal or ammonium and with L-vinyl-M -methyl-acetamide or N-vinylpyrrolidone in an amount of 0.1-3.0 wt.% by weight of cement with a water-cement ratio of 0.34-0.83, and the copolymer contains 10-85 wt.% alkaline vinyl sulfonate. an alkali metal or ammonium metal or ammonium or acrylamido-1,1-dimethylethylene sulfonate; 10-27.5% by weight of N-vinyl-M-methylacetamide or N-vinylpyridolone; 5-75 wt.% Acrylamide or acrylic acid, and molecular
    03 vi
    to
    cm
    J1473720
    a copolymer is from 2.5 -10-F o 6 6 10 conventional units
    Neither acre nat and n-0.1 cement than nat acre col 10, acre lectures
    Cement mortar is prepared as follows: the shutter fluid is poured into the mixing bowl and rotated at a speed of 4000 rpm. Then, no later than 15 seconds, cement is added. Thereafter, the resulting solution is stirred for 35 seconds at 12,000 rpm, and then the copolymer is added in the required amount. For the preparation of cement slurries, a mixer is used at a constant rate of the company Chandler.
    The compositions of the copolymers are given in table. I.
    The compositions and properties of cement solutions containing copolymers in accordance with the invention are given in table. 2. The addition of copolymers in an amount of 0.1–3% contributes to a decrease in the water yield of the cement.
    five
    0 5
    formula of the invention Cement mortar for deep wells, including cement, water of quenching and additive, characterized in that, in order to improve its quality by reducing water loss, it contains as an additive a copolymer of acrylamide or acrylic acid with vinyl sulfonate or acrylamido-1 , 1-dimethylethylene sulphate of an alkali metal or ammonium and with I-vinyl-N-methylacetamide or N-vinschiryrolidone in an amount of 0.1 ... 3.0% by weight of cement with a water-cement ratio of 0.34 ... O , 83, and the copolymer contains alkali metal vinyl acetate la or ammonium or acrylamido-1, alkali metal or ammonium I-dimethylethylene sulphonate in an amount of 10 ... 85 wt.%, I-vinyl-H-methylacetamide or N-vinyl pyrrolidone 10.0 ... 27.5 wt. %, and acrylamide or acrylic acid, 5 ".. 75% by weight, and the molecular weight of the copolymer is 2.5-U5 ... 6106 conventional units.
    1.T a b l i, c a 1
    10 65
    22.5
    65 50
    75 75 85
    five
    0
    50 15
    75
    15 30 10 15 5
    Table 2
    权利要求:
    Claims (1)
    [1]
    The claims Cement mortar for deep wells, including cement, mixing water and an additive, characterized in that, in order to improve its quality by reducing water loss, it contains as an additive a copolymer of acrylamide or acrylic acid with vinyl sulfonate or acrylamido-1,1- alkali metal or ammonium dimethylethanesulfonate and with Y-vinyl-C-methylacetamide or N-vinylpyrrolidone in an amount of 0.1 ... 3.0% by weight of cement at a water-cement ratio of 0.34 ... 0.83, the copolymer containing vinyl sulfonate alkali metal and whether ammonium or acrylamide O-1,1-dimethylethylene sulfonate of an alkali metal or ammonium in an amount of 10 ... 85 wt.%, Ν-βηηηπ-Ν methylacetamide or N-vinylpyrrolidone 10.0 ... 27.5 wt.%, and acrylamide or acrylic acid 5 * .. 75 wt.%, and the molecular weight of the copolymer is 2.5 · 10 5 .. .6 Ί0 6 srvc
    1 .Table and ( ts 1
    Copolymer Compositions The content of units of monomers, wt.% Acrylamidomethylene propenyl sulfonate Acrylamido methylene propanesulfonic acid Na-vinylpsulfonate N-vinylN-methylacetamide Acrylamide Acrylamide partially saponified Acrylic acid 1 22.5 27.5 fifty2 - 10 - 15.0 - 75 - 3 - 65 - 20 fifteen - - 4 65 - - 20 - - fifteen 5 fifty - - 20 - - thirty 6 75 - - fifteen - - 10 7 75 - - 10 - - fifteen 8 85 10 5
    5 1473720 6Table 2- - The composition of the cement ^ gr, gTempe Pressure, MPa Time Drainage Elm- town hall harder— country house, BONE Cement Liquid Copolymer Additive Ra, ° CNII, h cm 3 (by (by mixing (N Composition API) Franfrom table 1)"U, MPa s 500 250 2.5 (0.57.) - - - - - 8.4 - class G saturated NaCl solution * 1440 194 3.3 (0.75%) - - -11.3 500 class G 3% NaCl 1 2600 450 12 (2%)804 25 200 class D saturated £ 3160 - 4 22 - RR 600 450 12 (2%) 12 80 - 4 12.5 800 class 0 saturated ! 3 bentonite 160 - 4 . 14.0 . - rr 600. 500 32 (2%) - 80 - 4 9,4 300 class B water No. 3600 500 12 (2%) 12 804 4.1 * class D water AT 3 bentonite 100 34 0.1 (0.1%) 0.7 - - - 12.5 - class G water 3 dispersant 100 42 0.7 (0.7%) - - 7.5 - class G water from 1 hCaCl1 g If 3600 268 0.35% - 22 0.69 - 15,5 94 class G water (No. 4)600 268 0.35%22 0.69 - 22.1 39 class G water (* 5)600 268 σ, 35% - 22 0.69 - 19.5 58 class G water (* 6)600 268 0.35%22 0.69 - 13.5 68 class G water (No. 7)600 268 0.35% - 22 0.69> 500 3.4 class G water methylene naphtha tapinsulfonate600 268 - - 22 0.69 > 500 74 class G water 100 34 0.1% 0.7 20 45 * class G water (" 8) dispersant 90 53 • 150 70 100 80 3% - 20 - - 3,5 - class G(No. 8)90- 3,7 - - 150 - - 4.0 100 70 20% - 20 - - 2.7 class G(S ’8)90- 2,8 - 150 -2.8 -
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    同族专利:
    公开号 | 公开日
    NO840239L|1984-07-25|
    EP0116671A1|1984-08-29|
    CA1228373A|1987-10-20|
    JPH0361835B2|1991-09-24|
    MX163275B|1992-03-31|
    DE3302168A1|1984-07-26|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19833302168|DE3302168A1|1983-01-24|1983-01-24|CEMENT SLUDGE FOR DEEP HOLES WITH A CONTENT OF COPOLYMERISAT TO REDUCE WATER LOSS|
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