Study on Preparation of Fluid Loss Reducer for High Temperature and High Salinity Water-based Drilling Fluid

Wei Jiang ； Ying Xin ； Mingyue Gong ； Dongjun Wang ； Weizhong Wang

《International Core Journal of Engineering》 7卷10期 (2021/10) Pp. 542-549

https://doi.org/10.6919/ICJE.202110_7(10).0079

摘要

In the ultra-deep well drilling project, the bottom hole temperature exceeds 200℃, the formation pressure is high, the bottom hole situation is complex, and drilling is difficult, which puts forward higher requirements for drilling fluid and drilling fluid additives. As one of the most important additives for water-based drilling fluid, fluid loss additive plays an important role in ensuring safe, fast and efficient drilling. Firstly, according to the performance requirements of high temperature and high salt resistance fluid loss additive for drilling fluid, AM/AMPS/SSS/NVP quadripolymer water-based fluid loss additive was synthesized by copolymerization for the first time. Performance evaluation shows that the fluid loss reducer can be used in 200℃/220℃ saturated brine drilling fluid, and can keep good rheology and low fluid loss.

關鍵字

High Temperature and High Salt Resistance ； Water-based Drilling ； Fluid Loss Reducer ； Prepare

參考文獻

H Mao, Wang W, Ma Y, et al. Synthesis, characterization and properties of an anionic polymer for water-based drilling fluid as an anti-high temperature and anti-salt contamination fluid loss control additive [J]. Polymer Bulletin, 2021, 78(5):2483-2503.

Long H, Chen W, Tan D, et al. Development of a High Temperature and High Pressure Oil-Based Drilling Fluid Emulsion Stability Tester [J]. Open Journal of Yangtze Oil and Gas, 2021, 06(2):25-35.

A Polymer-based Drilling Fluid with High Temperature, Salt and Calcium Resistance Property [J]. IOP Conference Series Earth and Environmental Science, 2019, 237(5):052058.

Rheology and fluid loss of a polyacrylamide-based micro-gel particles in a water-based drilling fluid[J]. Materials Express, 2020, 10(5):657-662.

A novel zwitterionic quaternary copolymer as a fluid-loss additive for water-based drilling fluids[J]. Energy Sources Part A Recovery Utilization and Environmental Effects, 2020(7):1-14.