Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Micro-expansion retarder for well cementation of long sealing section
The invention relates to a micro-expansion retarder for well cementation of a long sealing section According to the technical scheme, the preparation method comprises the following steps: (1) adding 75 parts of water into a jacketed kettle, sequentially adding 9 parts of sodium hydroxyethylidenediphosphonate and 1 part of citric acid, stirring the mixture until dissolution; and 2) adding 15 partsof ammonium sulfate into the kettle body, and stirring the mixture until dissolution to obtain the product. According to the invention, based on a novel gas-forming expanding agent and a traditional gas-forming expanding agent, the gas generated by the expanding agent provided by the invention is formed by compounding ammonia gas and a preferred retarder, so that the expanding agent not only has the effect of the expanding agent, but also has fast top strength development at low temperature, and the ammonia gas not only can generate an expanding effect, but also can generate high temperature resistance. In addition, the novel micro-expansion long-sealing-section retarder is particularly suitable for well cementation of shale gas production layers, has the functions of three additives, notonly eliminates contradictory influence among the three additives, but also is more convenient and economical to use on site.
本发明涉及一种微膨胀长封固段固井用缓凝剂。其技术方案是包括以下步骤：1）向夹套釜中投入75份水，然后依次加入9份羟基乙叉二膦酸钠，1份柠檬酸搅拌至溶解；2）向釜体内再投入15份硫酸铵，搅拌至溶解即得到产品。本发明利用新型发气类膨胀剂，传统发气类膨胀剂产生气体为氢气，而本发明所述的膨胀剂产生气体为氨气和优选缓凝剂复配，使之不仅具有膨胀剂的作用，而且低温下顶部强度发育快，氨气不仅能产生膨胀作用，而且能加快水泥浆的强度发育，新型微膨胀长封固段缓凝剂尤其适用用页岩气产层固井，而且，本发明提到的添加剂具备三种添加剂的功能，不仅排除了三种添加剂之间的矛盾影响，而且现场使用更加便利和经济。
Micro-expansion retarder for well cementation of long sealing section
The invention relates to a micro-expansion retarder for well cementation of a long sealing section According to the technical scheme, the preparation method comprises the following steps: (1) adding 75 parts of water into a jacketed kettle, sequentially adding 9 parts of sodium hydroxyethylidenediphosphonate and 1 part of citric acid, stirring the mixture until dissolution; and 2) adding 15 partsof ammonium sulfate into the kettle body, and stirring the mixture until dissolution to obtain the product. According to the invention, based on a novel gas-forming expanding agent and a traditional gas-forming expanding agent, the gas generated by the expanding agent provided by the invention is formed by compounding ammonia gas and a preferred retarder, so that the expanding agent not only has the effect of the expanding agent, but also has fast top strength development at low temperature, and the ammonia gas not only can generate an expanding effect, but also can generate high temperature resistance. In addition, the novel micro-expansion long-sealing-section retarder is particularly suitable for well cementation of shale gas production layers, has the functions of three additives, notonly eliminates contradictory influence among the three additives, but also is more convenient and economical to use on site.
本发明涉及一种微膨胀长封固段固井用缓凝剂。其技术方案是包括以下步骤：1）向夹套釜中投入75份水，然后依次加入9份羟基乙叉二膦酸钠，1份柠檬酸搅拌至溶解；2）向釜体内再投入15份硫酸铵，搅拌至溶解即得到产品。本发明利用新型发气类膨胀剂，传统发气类膨胀剂产生气体为氢气，而本发明所述的膨胀剂产生气体为氨气和优选缓凝剂复配，使之不仅具有膨胀剂的作用，而且低温下顶部强度发育快，氨气不仅能产生膨胀作用，而且能加快水泥浆的强度发育，新型微膨胀长封固段缓凝剂尤其适用用页岩气产层固井，而且，本发明提到的添加剂具备三种添加剂的功能，不仅排除了三种添加剂之间的矛盾影响，而且现场使用更加便利和经济。
Micro-expansion retarder for well cementation of long sealing section
一种微膨胀长封固段固井用缓凝剂
ZHANG LIANG (Autor:in) / XIAO ZHIJUN (Autor:in) / LI HUANMING (Autor:in) / FAN YANPING (Autor:in) / LIU FUREN (Autor:in) / CHENG KANGKANG (Autor:in)
17.11.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
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
/
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
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