1. 耐高温复合盐加重压裂液体系性能研究.
- Author
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夏星帆, 高飞, 费瑛, 侯丽娟, 赵海龙, 李小娜, and 赵博
- Subjects
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FRACTURING fluids , *GAS reservoirs , *COMPOUND fractures , *PETROLEUM reservoirs , *GUAR gum , *GAS industry - Abstract
A compound salt of HCOONa and NaCl in the ratio of 1∶3 was preferably selected as the weighting agent in terms of weighting performance and price factors. A composite salt-weighted fracturing fluid system was prepared using a synthetic modified HPG and an organoboron crosslinker. The performance of the fracturing fluid system was evaluated according to the requirements in SY/T 5107—2016 “Performance Evaluation Method of Water-Based Fracturing Fluid”. The density of the compound salt-weighted fracturing fluid system is 1.35 g/cm³,and the residual viscosity is higher than 50 mPa·s when sheared for 120 min at 160 ℃ and 170 s-1.Field application tests show that the system can reduce wellhead pressure by 9～11 MPa, which provides technical support for the development of ultra-deep high-temperature and high-pressure oil and gas reservoirs. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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