High displacement drilling fluid system

The high displacement drilling fluid system is a set of water-based drilling fluid system developed for environmentally sensitive areas, consisting of various environmentally friendly treatment agents as components. It includes the main agent material drilling fluid viscosifier and filtrate reducer CS-VIF, drilling fluid sealant polymer emulsion CS-601, drilling fluid encapsulant CS-PLUS, drilling fluid sealant polyurethane fiber CS-SMF, and environmentally friendly lubricant CS-Elub. This system can be applied to various operations under complex conditions such as directional wells, high deviation wells, and high displacement wells.

The characteristics of the system include: environmentally friendly, meeting the requirements of various environments, and completely biodegradable; good reservoir protection effect; and can withstand temperatures up to 150℃.