TITLE:
Study on a Polyamine-Based Anti-Collapse Drilling Fluid System
AUTHORS:
Wenwu Zheng, Fu Liu, Jing Han, Binbin He, Shunyuan Zhang, Qichao Cao, Xiong Wang, Xintong Li
KEYWORDS:
Well Wall Stability, Anti-Collapse Water-Based Drilling Fluid, Evaluation Method, High Temperature Resistance, Salt Resistance
JOURNAL NAME:
Open Journal of Yangtze Oil and Gas,
Vol.7 No.3,
July
29,
2022
ABSTRACT: In complex strata, oil-based drilling fluid is the preferred drilling fluid system, but its preparation cost is high, and there are hidden safety risks. Therefore, the new progress of high-performance anti-collapse water-based drilling fluid at home and abroad is analyzed. It is difficult to prevent and control the well collapse. Once the well wall instability problem occurs, it will often bring huge economic losses to the enterprises, and the underground safety accidents will occur. In order to ensure the stability of the well wall and improve the downhole safety, the key treatment agent of water-based collapse drilling fluid is selected, the anti-collapse drilling fluid system is formulated, the evaluation method of drilling fluid prevention performance is established, and a set of water-based drilling fluid system suitable for easy to collapse strata in China is selected to ensure the downhole safety. The development trend of high performance anti-collapse water-based drilling fluid is expected to provide a reference for the research of high performance anti-collapse water-based drilling fluid system and key treatment agent.