Synthetic polymer fracturing fluid weighted by sodium formate enables fracture stimulations in Ultra-High pressure and High-Temperature reservoir

被引：5
|
作者：
Yang, Xiaojiang [1 ,2 ]
Chen, An [1 ]
Mao, Jincheng [1 ]
Zhang, Chong [1 ,3 ]
Wang, Juanjuan [3 ]
Fu, Meitao [1 ]
Zhang, Hu [4 ]
Wang, Junjian [3 ]
Song, Xianshi [3 ]
Zhang, Yang [1 ]
Lin, Chong [1 ]
机构：
[1] Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploitat, Chengdu 610500, Peoples R China
[2] Sinopec Zhongyuan Oilfield Co, Puyang 457001, Peoples R China
[3] Sinopec Northeast Oil & Gas Branch, Petr Engn Environm Technol Res Inst, Changchun 130000, Peoples R China
[4] Sichuan Green & Top Technol CO LTD, Chengdu 610500, Peoples R China
来源：
FUEL | 2023年 / 353卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
HCOONa weighted fracturing fluid; Gel breaker; Mild multi-step oxidation reaction; RUTHENIUM-CATALYZED OXIDATION; PRIMARY ALCOHOLS; CERIUM;
D O I：
10.1016/j.fuel.2023.129170
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Weighted fracturing fluid was considered to be one of the key technologies to deal with the challenge of abnormally high pressure and ultra-high temperature reservoir stimulation in the case of existing fracturing equipment. In this work, a thickener polymer Pt-Fb that meets the requirements of fracturing fluid weighting by HCOONa was synthesized. And HCOONa- weighted fracturing fluid with delayed crosslinking characteristics and good friction reduction performance was developed based on the polymer Pt-Fb. It is much cheaper than CHKO2weighted guar gum fracturing fluid. The density of HCOONa-weighted fracturing fluid was up to 1.3 g/cm3. The fracturing fluid proposed in this study meets the temperature resistance and shear resistance requirements of 170 degrees C and 170 s  1. Besides, a complete gel breaking was obtained by using NaBrO3, and the internal mechanism was investigated from both experimental and theoretical aspects. It was revealed that a mild multi-step oxidation reaction enables NaBrO3 to break the HCOONa-weighted fracturing fluid.
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页数：9
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