Weaver Austin Villeneuve & Sampson LLP
Injection stimulation agent for water injection well and the preparation method and application thereof
An injection stimulation agent for water injection well and the preparation method and application thereof are described. The raw material composition of the injection stimulation agent for water injection well comprises: 5.0%-10.0% of sulfamic acid, 10.0%-20.0% of methanol, 10.0%-20.0% of tartaric acid, 10.0%-20.0% of ethylenediamine tetramethylene phosphoric acid, 5.0%-10.0% of sodium polyacrylate, 5.0%-8.0% of cocoyl hydroxyethyl sulfonic acid and the balance of water. Embodiments include a preparation method of the above injection stimulation agent. The injection stimulation agent for water injection well can be used in acidizing treatment process of the reservoir, and can be used directly. The injection stimulation agent can play the role of shrinking swelled clay at the same time of dissolving scale, and finally achieve the purpose of depressurization and enhanced production.
PetroChina Company Ltd.
C E E C C C C
C09K E21B E21B C09K C09K C09K C09K
inventional inventional additional inventional inventional additional inventional
Zhenning Bin Lei Xianwen Zhiying Xiaobing Juntao Yong Lijun Suiwang Zhaojie Wei Erzhen Hongjun
Ji Yao Sui Li Deng Lu Wang Wang Mu Zhang Song Wang Wang Lu