The fluid loss additive is beneficial for maintaining and increasing the content of clay particles, forming a dense mud cake, significantly reducing water loss, and enhancing the cementation of the mud cake. Therefore, it can inhibit the hydration and expansion of shale, consolidate the wellbore, and prevent stuck pipe incidents.
The one-way pressure sealing agent DF-1 for drilling fluid is a grayish-yellow powdered product composed of specially processed natural fibers, filler particles, and additives, combined in appropriate gradations and specific processes. When added to the drilling fluid, under unidirectional pressure differential, it effectively seals various formation leaks, offering convenience in use, good compatibility, and no adverse effects on mud properties.