Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Intumescent fluid loss agent and preparation method thereof
The invention discloses an intumescent fluid loss agent which is prepared from the following raw materials in parts by weight: 20-40 parts of 2-acrylamide-2-methylpropanesulfonic acid, 3-13 parts of acrylamide, 1-5 parts of acrylic acid, 2-13 parts of ethylene glycol, 2-13 parts of N-vinyl pyrrolidone, 0.1-0.5 part of an initiator and 70-110 parts of water. The invention also provides a corresponding preparation method. According to the invention, by adding a fluid loss agent prepared by graft copolymerization of monomers such as 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, acrylic acid and the like and N-vinyl pyrrolidone and ethylene glycol into a cement paste system, the relative expansion rate of the cement paste system in 48 hours is 0.4%-3.2%, and the water loss is controlled within 50 ml. It shows that the fluid loss agent disclosed by the invention not only can well control the water loss of a cement paste system, but also improves the expansibility of cement paste; the performance of the fluid loss agent is far superior to that of a fluid loss agent on a common market, and the well cementation cost is reduced; raw materials of the fluid loss agent are easily available, and the fluid loss agent is simple to synthesize and easy to popularize and use.
本发明公开一种膨胀型降失水剂，由以下重量份的原料制成：2‑丙烯酰胺基‑2‑甲基丙磺酸20‑40份、丙烯酰胺3‑13份、丙烯酸1‑5份、乙二醇2‑13份、N‑乙烯基吡咯烷酮2‑13份、引发剂0.1‑0.5份、水70‑110份。同时提供其相应的制备方法。本发明将2‑丙烯酰胺基‑2‑甲基丙磺酸、丙烯酰胺、丙烯酸等单体与N‑乙烯基吡咯烷酮、乙二醇接枝共聚制得的降失水剂，加入水泥浆体系中，使其48h相对膨胀率为0.4%‑3.2%，失水量控制在50ml以内，由此可见，本发明的降失水剂不仅能够很好控制水泥浆体系的失水量，还提高了水泥浆的膨胀性，性能远优于普通市场上降失水剂，降低了固井成本；本发明的降失水剂原料易得、合成简单，易于推广使用。
Intumescent fluid loss agent and preparation method thereof
The invention discloses an intumescent fluid loss agent which is prepared from the following raw materials in parts by weight: 20-40 parts of 2-acrylamide-2-methylpropanesulfonic acid, 3-13 parts of acrylamide, 1-5 parts of acrylic acid, 2-13 parts of ethylene glycol, 2-13 parts of N-vinyl pyrrolidone, 0.1-0.5 part of an initiator and 70-110 parts of water. The invention also provides a corresponding preparation method. According to the invention, by adding a fluid loss agent prepared by graft copolymerization of monomers such as 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, acrylic acid and the like and N-vinyl pyrrolidone and ethylene glycol into a cement paste system, the relative expansion rate of the cement paste system in 48 hours is 0.4%-3.2%, and the water loss is controlled within 50 ml. It shows that the fluid loss agent disclosed by the invention not only can well control the water loss of a cement paste system, but also improves the expansibility of cement paste; the performance of the fluid loss agent is far superior to that of a fluid loss agent on a common market, and the well cementation cost is reduced; raw materials of the fluid loss agent are easily available, and the fluid loss agent is simple to synthesize and easy to popularize and use.
本发明公开一种膨胀型降失水剂，由以下重量份的原料制成：2‑丙烯酰胺基‑2‑甲基丙磺酸20‑40份、丙烯酰胺3‑13份、丙烯酸1‑5份、乙二醇2‑13份、N‑乙烯基吡咯烷酮2‑13份、引发剂0.1‑0.5份、水70‑110份。同时提供其相应的制备方法。本发明将2‑丙烯酰胺基‑2‑甲基丙磺酸、丙烯酰胺、丙烯酸等单体与N‑乙烯基吡咯烷酮、乙二醇接枝共聚制得的降失水剂，加入水泥浆体系中，使其48h相对膨胀率为0.4%‑3.2%，失水量控制在50ml以内，由此可见，本发明的降失水剂不仅能够很好控制水泥浆体系的失水量，还提高了水泥浆的膨胀性，性能远优于普通市场上降失水剂，降低了固井成本；本发明的降失水剂原料易得、合成简单，易于推广使用。
Intumescent fluid loss agent and preparation method thereof
一种膨胀型降失水剂及其制备方法
SHAO XINCHAO (Autor:in) / WANG BIAO (Autor:in) / TIAN ZHEN (Autor:in) / SONG XIAOFENG (Autor:in) / SHEN ZENGHUI (Autor:in)
02.10.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
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